[Touch-packages] [Bug 1850184] Re: losetup -f broken in 2.0.6-1ubuntu2
This bug was fixed in the package klibc - 2.0.6-1ubuntu3 --- klibc (2.0.6-1ubuntu3) eoan; urgency=medium * Pull upstream fixes for losetup issues raised with gcc-9 (LP: #1850184): - loop-header.patch: Switch to using the kernel's UAPI exported loop.h - loop-fixes.patch: Fix some type mismatch warnings from above change. - loop-fixes-2.patch: Fix last type mismatch in code dropped upstream. -- Adam Conrad Wed, 06 Nov 2019 23:15:53 -0700 ** Changed in: klibc (Ubuntu Eoan) Status: Fix Committed => Fix Released -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to klibc in Ubuntu. https://bugs.launchpad.net/bugs/1850184 Title: losetup -f broken in 2.0.6-1ubuntu2 Status in klibc package in Ubuntu: Fix Released Status in klibc source package in Eoan: Fix Released Status in klibc source package in Focal: Fix Released Bug description: [Impact] * sudo /usr/lib/klibc/bin/losetup -vf, which appears to be missbuilt, as main(argc) is reset to zero, after ioctl() operations in a function call, quite unexpectadly. [Test Case] * $ sudo /usr/lib/klibc/bin/losetup -vf Loop device is /dev/loop20 loop: can't get info on device /dev/loop20: No such device or address is bad. Note that ioctl() must succeed, thus loop0 device must be configured to trigger the bug. [Regression Potential] * klibc is quite special, as it uses linux kernel headers/assembly. It seems like there is incompatibility between klibc sources, and gcc-9 with linux-5.3 when used to build userspace programmes. * disabling cf-protection and stack-clash-protection did not help. * building with gcc-8 does not exhibit the problem. * the workaround is quite simple in the code, keep a copy of argc to compare to it later in the code. [Other Info] * Original bug report http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64 https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz ... [ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) loop: can't get info on device /dev/loop1: No such device or address BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [6n+ mkdir result + set -x + read LINE + grep -e '^--OUT .* BEGIN-- .* --END--$' qemu-output.txt ++ grep -q /rofs result/lsblk.txt grep: result/lsblk.txt: No such file or directory autopkgtest [21:45:45]: test boot: ---] autopkgtest [21:45:45]: test boot: - - - - - - - - - - results - - - - - - - - - - boot FAIL non-zero exit status 2 autopkgtest [21:45:45]: summary boot FAIL non-zero exit status 2 ... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/klibc/+bug/1850184/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1850184] Re: losetup -f broken in 2.0.6-1ubuntu2
(eoan-amd64)root@nosferatu:~# apt-get install klibc-utils=2.0.6-1ubuntu2 libklibc=2.0.6-1ubuntu2 (eoan-amd64)root@nosferatu:~# /sbin/losetup -vf /dev/loop6 (eoan-amd64)root@nosferatu:~# /usr/lib/klibc/bin/losetup -vf Loop device is /dev/loop6 loop: can't get info on device /dev/loop6: No such device or address (eoan-amd64)root@nosferatu:~# apt-get install klibc-utils=2.0.6-1ubuntu3 libklibc=2.0.6-1ubuntu3 (eoan-amd64)root@nosferatu:~# /sbin/losetup -vf /dev/loop6 (eoan-amd64)root@nosferatu:~# /usr/lib/klibc/bin/losetup -vf Loop device is /dev/loop6 /dev/loop6 ** Tags removed: verification-needed verification-needed-eoan ** Tags added: verification-done verification-done-eoan -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to klibc in Ubuntu. https://bugs.launchpad.net/bugs/1850184 Title: losetup -f broken in 2.0.6-1ubuntu2 Status in klibc package in Ubuntu: Fix Released Status in klibc source package in Eoan: Fix Committed Status in klibc source package in Focal: Fix Released Bug description: [Impact] * sudo /usr/lib/klibc/bin/losetup -vf, which appears to be missbuilt, as main(argc) is reset to zero, after ioctl() operations in a function call, quite unexpectadly. [Test Case] * $ sudo /usr/lib/klibc/bin/losetup -vf Loop device is /dev/loop20 loop: can't get info on device /dev/loop20: No such device or address is bad. Note that ioctl() must succeed, thus loop0 device must be configured to trigger the bug. [Regression Potential] * klibc is quite special, as it uses linux kernel headers/assembly. It seems like there is incompatibility between klibc sources, and gcc-9 with linux-5.3 when used to build userspace programmes. * disabling cf-protection and stack-clash-protection did not help. * building with gcc-8 does not exhibit the problem. * the workaround is quite simple in the code, keep a copy of argc to compare to it later in the code. [Other Info] * Original bug report http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64 https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz ... [ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) loop: can't get info on device /dev/loop1: No such device or address BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [6n+ mkdir result + set -x + read LINE + grep -e '^--OUT .* BEGIN-- .* --END--$' qemu-output.txt ++ grep -q /rofs result/lsblk.txt grep: result/lsblk.txt: No such file or directory autopkgtest [21:45:45]: test boot: ---] autopkgtest [21:45:45]: test boot: - - - - - - - - - - results - - - - - - - - - - boot FAIL non-zero exit status 2 autopkgtest [21:45:45]: summary boot FAIL non-zero exit status 2 ... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/klibc/+bug/1850184/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1850184] Re: losetup -f broken in 2.0.6-1ubuntu2
Hello Balint, or anyone else affected, Accepted klibc into eoan-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/klibc/2.0.6-1ubuntu3 in a few hours, and then in the -proposed repository. Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users. If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested and change the tag from verification-needed-eoan to verification-done-eoan. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-eoan. In either case, without details of your testing we will not be able to proceed. Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping! N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days. ** Changed in: klibc (Ubuntu Eoan) Status: Confirmed => Fix Committed ** Tags added: verification-needed verification-needed-eoan -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to klibc in Ubuntu. https://bugs.launchpad.net/bugs/1850184 Title: losetup -f broken in 2.0.6-1ubuntu2 Status in klibc package in Ubuntu: Fix Released Status in klibc source package in Eoan: Fix Committed Status in klibc source package in Focal: Fix Released Bug description: [Impact] * sudo /usr/lib/klibc/bin/losetup -vf, which appears to be missbuilt, as main(argc) is reset to zero, after ioctl() operations in a function call, quite unexpectadly. [Test Case] * $ sudo /usr/lib/klibc/bin/losetup -vf Loop device is /dev/loop20 loop: can't get info on device /dev/loop20: No such device or address is bad. Note that ioctl() must succeed, thus loop0 device must be configured to trigger the bug. [Regression Potential] * klibc is quite special, as it uses linux kernel headers/assembly. It seems like there is incompatibility between klibc sources, and gcc-9 with linux-5.3 when used to build userspace programmes. * disabling cf-protection and stack-clash-protection did not help. * building with gcc-8 does not exhibit the problem. * the workaround is quite simple in the code, keep a copy of argc to compare to it later in the code. [Other Info] * Original bug report http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64 https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz ... [ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) loop: can't get info on device /dev/loop1: No such device or address BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [6n+ mkdir result + set -x + read LINE + grep -e '^--OUT .* BEGIN-- .* --END--$' qemu-output.txt ++ grep -q /rofs result/lsblk.txt grep: result/lsblk.txt: No such file or directory autopkgtest [21:45:45]: test boot: ---] autopkgtest [21:45:45]: test boot: - - - - - - - - - - results - - - - - - - - - - boot FAIL non-zero exit status 2 autopkgtest [21:45:45]: summary boot FAIL non-zero exit status 2 ... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/klibc/+bug/1850184/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1850184] Re: losetup -f broken in 2.0.6-1ubuntu2
This bug was fixed in the package klibc - 2.0.7-1ubuntu4 --- klibc (2.0.7-1ubuntu4) focal; urgency=medium * Fix losetup, by switching to kernel uapi header, instead of buggy klibc one. LP: #1850184 -- Dimitri John Ledkov Thu, 07 Nov 2019 01:08:13 + ** Changed in: klibc (Ubuntu Focal) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to klibc in Ubuntu. https://bugs.launchpad.net/bugs/1850184 Title: losetup -f broken in 2.0.6-1ubuntu2 Status in klibc package in Ubuntu: Fix Released Status in klibc source package in Eoan: Confirmed Status in klibc source package in Focal: Fix Released Bug description: [Impact] * sudo /usr/lib/klibc/bin/losetup -vf, which appears to be missbuilt, as main(argc) is reset to zero, after ioctl() operations in a function call, quite unexpectadly. [Test Case] * $ sudo /usr/lib/klibc/bin/losetup -vf Loop device is /dev/loop20 loop: can't get info on device /dev/loop20: No such device or address is bad. Note that ioctl() must succeed, thus loop0 device must be configured to trigger the bug. [Regression Potential] * klibc is quite special, as it uses linux kernel headers/assembly. It seems like there is incompatibility between klibc sources, and gcc-9 with linux-5.3 when used to build userspace programmes. * disabling cf-protection and stack-clash-protection did not help. * building with gcc-8 does not exhibit the problem. * the workaround is quite simple in the code, keep a copy of argc to compare to it later in the code. [Other Info] * Original bug report http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64 https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz ... [ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) loop: can't get info on device /dev/loop1: No such device or address BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [6n+ mkdir result + set -x + read LINE + grep -e '^--OUT .* BEGIN-- .* --END--$' qemu-output.txt ++ grep -q /rofs result/lsblk.txt grep: result/lsblk.txt: No such file or directory autopkgtest [21:45:45]: test boot: ---] autopkgtest [21:45:45]: test boot: - - - - - - - - - - results - - - - - - - - - - boot FAIL non-zero exit status 2 autopkgtest [21:45:45]: summary boot FAIL non-zero exit status 2 ... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/klibc/+bug/1850184/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1850184] Re: losetup -f broken in 2.0.6-1ubuntu2
Yeah, I saw the mail; much better. I fixed one of these in dietlibc the other day… -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to klibc in Ubuntu. https://bugs.launchpad.net/bugs/1850184 Title: losetup -f broken in 2.0.6-1ubuntu2 Status in klibc package in Ubuntu: Confirmed Status in klibc source package in Eoan: Confirmed Status in klibc source package in Focal: Confirmed Bug description: [Impact] * sudo /usr/lib/klibc/bin/losetup -vf, which appears to be missbuilt, as main(argc) is reset to zero, after ioctl() operations in a function call, quite unexpectadly. [Test Case] * $ sudo /usr/lib/klibc/bin/losetup -vf Loop device is /dev/loop20 loop: can't get info on device /dev/loop20: No such device or address is bad. Note that ioctl() must succeed, thus loop0 device must be configured to trigger the bug. [Regression Potential] * klibc is quite special, as it uses linux kernel headers/assembly. It seems like there is incompatibility between klibc sources, and gcc-9 with linux-5.3 when used to build userspace programmes. * disabling cf-protection and stack-clash-protection did not help. * building with gcc-8 does not exhibit the problem. * the workaround is quite simple in the code, keep a copy of argc to compare to it later in the code. [Other Info] * Original bug report http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64 https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz ... [ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) loop: can't get info on device /dev/loop1: No such device or address BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [6n+ mkdir result + set -x + read LINE + grep -e '^--OUT .* BEGIN-- .* --END--$' qemu-output.txt ++ grep -q /rofs result/lsblk.txt grep: result/lsblk.txt: No such file or directory autopkgtest [21:45:45]: test boot: ---] autopkgtest [21:45:45]: test boot: - - - - - - - - - - results - - - - - - - - - - boot FAIL non-zero exit status 2 autopkgtest [21:45:45]: summary boot FAIL non-zero exit status 2 ... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/klibc/+bug/1850184/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1850184] Re: losetup -f broken in 2.0.6-1ubuntu2
We found the issue -- I think xnox is going to report it via proper channels. But basically it's this: sizeof(dev_t) = 4 sizeof(__kernel_old_dev_t) = 8 This makes the kernel's loop_info 8 bytes bigger than klibc's and so the kernel is writing past the end of the loopinfo on the stack, which until now has avoided causing problems by sheer luck. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to klibc in Ubuntu. https://bugs.launchpad.net/bugs/1850184 Title: losetup -f broken in 2.0.6-1ubuntu2 Status in klibc package in Ubuntu: Confirmed Status in klibc source package in Eoan: Confirmed Status in klibc source package in Focal: Confirmed Bug description: [Impact] * sudo /usr/lib/klibc/bin/losetup -vf, which appears to be missbuilt, as main(argc) is reset to zero, after ioctl() operations in a function call, quite unexpectadly. [Test Case] * $ sudo /usr/lib/klibc/bin/losetup -vf Loop device is /dev/loop20 loop: can't get info on device /dev/loop20: No such device or address is bad. Note that ioctl() must succeed, thus loop0 device must be configured to trigger the bug. [Regression Potential] * klibc is quite special, as it uses linux kernel headers/assembly. It seems like there is incompatibility between klibc sources, and gcc-9 with linux-5.3 when used to build userspace programmes. * disabling cf-protection and stack-clash-protection did not help. * building with gcc-8 does not exhibit the problem. * the workaround is quite simple in the code, keep a copy of argc to compare to it later in the code. [Other Info] * Original bug report http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64 https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz ... [ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) loop: can't get info on device /dev/loop1: No such device or address BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [6n+ mkdir result + set -x + read LINE + grep -e '^--OUT .* BEGIN-- .* --END--$' qemu-output.txt ++ grep -q /rofs result/lsblk.txt grep: result/lsblk.txt: No such file or directory autopkgtest [21:45:45]: test boot: ---] autopkgtest [21:45:45]: test boot: - - - - - - - - - - results - - - - - - - - - - boot FAIL non-zero exit status 2 autopkgtest [21:45:45]: summary boot FAIL non-zero exit status 2 ... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/klibc/+bug/1850184/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1850184] Re: losetup -f broken in 2.0.6-1ubuntu2
How is this even a fix? Also, does this affect other applications built against klibc? -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to klibc in Ubuntu. https://bugs.launchpad.net/bugs/1850184 Title: losetup -f broken in 2.0.6-1ubuntu2 Status in klibc package in Ubuntu: Confirmed Status in klibc source package in Eoan: Confirmed Status in klibc source package in Focal: Confirmed Bug description: [Impact] * sudo /usr/lib/klibc/bin/losetup -vf, which appears to be missbuilt, as main(argc) is reset to zero, after ioctl() operations in a function call, quite unexpectadly. [Test Case] * $ sudo /usr/lib/klibc/bin/losetup -vf Loop device is /dev/loop20 loop: can't get info on device /dev/loop20: No such device or address is bad. Note that ioctl() must succeed, thus loop0 device must be configured to trigger the bug. [Regression Potential] * klibc is quite special, as it uses linux kernel headers/assembly. It seems like there is incompatibility between klibc sources, and gcc-9 with linux-5.3 when used to build userspace programmes. * disabling cf-protection and stack-clash-protection did not help. * building with gcc-8 does not exhibit the problem. * the workaround is quite simple in the code, keep a copy of argc to compare to it later in the code. [Other Info] * Original bug report http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64 https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz ... [ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) loop: can't get info on device /dev/loop1: No such device or address BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [6n+ mkdir result + set -x + read LINE + grep -e '^--OUT .* BEGIN-- .* --END--$' qemu-output.txt ++ grep -q /rofs result/lsblk.txt grep: result/lsblk.txt: No such file or directory autopkgtest [21:45:45]: test boot: ---] autopkgtest [21:45:45]: test boot: - - - - - - - - - - results - - - - - - - - - - boot FAIL non-zero exit status 2 autopkgtest [21:45:45]: summary boot FAIL non-zero exit status 2 ... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/klibc/+bug/1850184/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1850184] Re: losetup -f broken in 2.0.6-1ubuntu2
** No longer affects: gcc-9 (Ubuntu) ** No longer affects: gcc-9 (Ubuntu Eoan) ** No longer affects: gcc-9 (Ubuntu Focal) ** No longer affects: linux (Ubuntu Focal) ** No longer affects: linux (Ubuntu Eoan) ** No longer affects: linux (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to klibc in Ubuntu. https://bugs.launchpad.net/bugs/1850184 Title: losetup -f broken in 2.0.6-1ubuntu2 Status in klibc package in Ubuntu: Confirmed Status in klibc source package in Eoan: Confirmed Status in klibc source package in Focal: Confirmed Bug description: [Impact] * sudo /usr/lib/klibc/bin/losetup -vf, which appears to be missbuilt, as main(argc) is reset to zero, after ioctl() operations in a function call, quite unexpectadly. [Test Case] * $ sudo /usr/lib/klibc/bin/losetup -vf Loop device is /dev/loop20 loop: can't get info on device /dev/loop20: No such device or address is bad. Note that ioctl() must succeed, thus loop0 device must be configured to trigger the bug. [Regression Potential] * klibc is quite special, as it uses linux kernel headers/assembly. It seems like there is incompatibility between klibc sources, and gcc-9 with linux-5.3 when used to build userspace programmes. * disabling cf-protection and stack-clash-protection did not help. * building with gcc-8 does not exhibit the problem. * the workaround is quite simple in the code, keep a copy of argc to compare to it later in the code. [Other Info] * Original bug report http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64 https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz ... [ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) loop: can't get info on device /dev/loop1: No such device or address BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [6n+ mkdir result + set -x + read LINE + grep -e '^--OUT .* BEGIN-- .* --END--$' qemu-output.txt ++ grep -q /rofs result/lsblk.txt grep: result/lsblk.txt: No such file or directory autopkgtest [21:45:45]: test boot: ---] autopkgtest [21:45:45]: test boot: - - - - - - - - - - results - - - - - - - - - - boot FAIL non-zero exit status 2 autopkgtest [21:45:45]: summary boot FAIL non-zero exit status 2 ... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/klibc/+bug/1850184/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1850184] Re: losetup -f broken in 2.0.6-1ubuntu2
** Changed in: klibc (Ubuntu Focal) Status: Fix Released => Confirmed ** Changed in: klibc (Ubuntu Eoan) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to klibc in Ubuntu. https://bugs.launchpad.net/bugs/1850184 Title: losetup -f broken in 2.0.6-1ubuntu2 Status in klibc package in Ubuntu: Confirmed Status in klibc source package in Eoan: Confirmed Status in klibc source package in Focal: Confirmed Bug description: [Impact] * sudo /usr/lib/klibc/bin/losetup -vf, which appears to be missbuilt, as main(argc) is reset to zero, after ioctl() operations in a function call, quite unexpectadly. [Test Case] * $ sudo /usr/lib/klibc/bin/losetup -vf Loop device is /dev/loop20 loop: can't get info on device /dev/loop20: No such device or address is bad. Note that ioctl() must succeed, thus loop0 device must be configured to trigger the bug. [Regression Potential] * klibc is quite special, as it uses linux kernel headers/assembly. It seems like there is incompatibility between klibc sources, and gcc-9 with linux-5.3 when used to build userspace programmes. * disabling cf-protection and stack-clash-protection did not help. * building with gcc-8 does not exhibit the problem. * the workaround is quite simple in the code, keep a copy of argc to compare to it later in the code. [Other Info] * Original bug report http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64 https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz ... [ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) loop: can't get info on device /dev/loop1: No such device or address BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [6n+ mkdir result + set -x + read LINE + grep -e '^--OUT .* BEGIN-- .* --END--$' qemu-output.txt ++ grep -q /rofs result/lsblk.txt grep: result/lsblk.txt: No such file or directory autopkgtest [21:45:45]: test boot: ---] autopkgtest [21:45:45]: test boot: - - - - - - - - - - results - - - - - - - - - - boot FAIL non-zero exit status 2 autopkgtest [21:45:45]: summary boot FAIL non-zero exit status 2 ... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/klibc/+bug/1850184/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1850184] Re: losetup -f broken in 2.0.6-1ubuntu2
This is my replacement "minimized" losetup.c that exhibits the problem. Simply, drop this into klibc sources and run: ./debian/rules build; sudo ./usr/utils/static/losetup 1 Argc before find_unused_loop_devices() 0 Argc after find_unused_loop_devices() Argc values before and after did not match. Note that same source works fine as glibc binary: gcc ./usr/utils/losetup.c; sudo ./a.out 1 Argc before find_unused_loop_devices() 1 Argc after find_unused_loop_devices() ** Attachment added: "losetup.c" https://bugs.launchpad.net/ubuntu/+source/klibc/+bug/1850184/+attachment/5301878/+files/losetup.c -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to klibc in Ubuntu. https://bugs.launchpad.net/bugs/1850184 Title: losetup -f broken in 2.0.6-1ubuntu2 Status in gcc-9 package in Ubuntu: New Status in klibc package in Ubuntu: Fix Released Status in linux package in Ubuntu: Incomplete Status in gcc-9 source package in Eoan: New Status in klibc source package in Eoan: New Status in linux source package in Eoan: Incomplete Status in gcc-9 source package in Focal: New Status in klibc source package in Focal: Fix Released Status in linux source package in Focal: Incomplete Bug description: [Impact] * sudo /usr/lib/klibc/bin/losetup -vf, which appears to be missbuilt, as main(argc) is reset to zero, after ioctl() operations in a function call, quite unexpectadly. [Test Case] * $ sudo /usr/lib/klibc/bin/losetup -vf Loop device is /dev/loop20 loop: can't get info on device /dev/loop20: No such device or address is bad. Note that ioctl() must succeed, thus loop0 device must be configured to trigger the bug. [Regression Potential] * klibc is quite special, as it uses linux kernel headers/assembly. It seems like there is incompatibility between klibc sources, and gcc-9 with linux-5.3 when used to build userspace programmes. * disabling cf-protection and stack-clash-protection did not help. * building with gcc-8 does not exhibit the problem. * the workaround is quite simple in the code, keep a copy of argc to compare to it later in the code. [Other Info] * Original bug report http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64 https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz ... [ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) loop: can't get info on device /dev/loop1: No such device or address BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [6n+ mkdir result + set -x + read LINE + grep -e '^--OUT .* BEGIN-- .* --END--$' qemu-output.txt ++ grep -q /rofs result/lsblk.txt grep: result/lsblk.txt: No such file or directory autopkgtest [21:45:45]: test boot: ---] autopkgtest [21:45:45]: test boot: - - - - - - - - - - results - - - - - - - - - - boot FAIL non-zero exit status 2 autopkgtest [21:45:45]: summary boot FAIL non-zero exit status 2 ... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcc-9/+bug/1850184/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1850184] Re: losetup -f broken in 2.0.6-1ubuntu2
This bug was fixed in the package klibc - 2.0.7-1ubuntu1 --- klibc (2.0.7-1ubuntu1) focal; urgency=low * Merge from Debian unstable. Remaining changes: * Fix FTBFS on eoan and later with new gcc - cf-protection.patch: Disable cf-protection for syscalls stub. * save-argc.patch: when build with gcc-9 linux-5.3, calling ioctl, clears global argc, thus save it, to compare to it later. Otheriwse losetup -f is broken LP: #1850184 klibc (2.0.7-1) unstable; urgency=medium [ Ben Hutchings ] * New upstream version: - klcc: Enable stripping even if CONFIG_DEBUG_INFO is enabled - run-init: Allow the initramfs to be persisted across root changes (thanks to Matthew Garrett) - ipconfig: Implement support -d ...:dns0:dns1 options (Closes: #931416) - Kbuild: Work around broken "ar s" in binutils 2.32 (see #941921) * debian/rules: Reorganise make flags variables * debian/rules: Define ARCH for klibc, for all architectures * debian/rules: Delete redundant architecture mappings * debian/rules: Delete redundant export * klibc-utils: Trigger update-initramfs on install/upgrade * initramfs-tools: Don't install commands that already exist in /sbin * initramfs-tools: Exclude kinit and zcat commands earlier * initramfs-tools: Exclude gzip command * Drop "resume: Backward compatibility for resume_offset", which will not be needed in the next release * [klibc] fstype: Drop obsolete support for "ext4dev" (Closes: #932926) * debian/control: Set Maintainer to Debian Kernel Team; move maks to Uploaders [ James Clarke ] * debian/control: Restrict m4 build dependency to just sparc [ Helmut Grohne ] * Honour DEB_BUILD_OPTIONS=nocheck. (Closes: #922814) -- Dimitri John Ledkov Thu, 31 Oct 2019 11:50:44 + ** Changed in: klibc (Ubuntu Focal) Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to klibc in Ubuntu. https://bugs.launchpad.net/bugs/1850184 Title: losetup -f broken in 2.0.6-1ubuntu2 Status in gcc-9 package in Ubuntu: New Status in klibc package in Ubuntu: Fix Released Status in linux package in Ubuntu: Incomplete Status in gcc-9 source package in Eoan: New Status in klibc source package in Eoan: New Status in linux source package in Eoan: Incomplete Status in gcc-9 source package in Focal: New Status in klibc source package in Focal: Fix Released Status in linux source package in Focal: Incomplete Bug description: [Impact] * sudo /usr/lib/klibc/bin/losetup -vf, which appears to be missbuilt, as main(argc) is reset to zero, after ioctl() operations in a function call, quite unexpectadly. [Test Case] * $ sudo /usr/lib/klibc/bin/losetup -vf Loop device is /dev/loop20 loop: can't get info on device /dev/loop20: No such device or address is bad. Note that ioctl() must succeed, thus loop0 device must be configured to trigger the bug. [Regression Potential] * klibc is quite special, as it uses linux kernel headers/assembly. It seems like there is incompatibility between klibc sources, and gcc-9 with linux-5.3 when used to build userspace programmes. * disabling cf-protection and stack-clash-protection did not help. * building with gcc-8 does not exhibit the problem. * the workaround is quite simple in the code, keep a copy of argc to compare to it later in the code. [Other Info] * Original bug report http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64 https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz ... [ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) loop: can't get info on device /dev/loop1: No such device or address BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [6n+ mkdir result + set -x + read LINE + grep -e '^--OUT .* BEGIN-- .* --END--$' qemu-output.txt ++ grep -q /rofs result/lsblk.txt grep: result/lsblk.txt: No such file or directory autopkgtest [21:45:45]: test boot: ---] autopkgtest [21:45:45]: test boot: - - - - - - - - - - results - - - - - - - - - - boot FAIL non-zero exit status 2 autopkgtest [21:45:45]: summary boot FAIL non-zero exit status 2 ... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcc-9/+bug/1850184/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1850184] Re: losetup -f broken in 2.0.6-1ubuntu2
** Tags added: patch -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to klibc in Ubuntu. https://bugs.launchpad.net/bugs/1850184 Title: losetup -f broken in 2.0.6-1ubuntu2 Status in gcc-9 package in Ubuntu: New Status in klibc package in Ubuntu: New Status in linux package in Ubuntu: Incomplete Status in gcc-9 source package in Eoan: New Status in klibc source package in Eoan: New Status in linux source package in Eoan: Incomplete Status in gcc-9 source package in Focal: New Status in klibc source package in Focal: New Status in linux source package in Focal: Incomplete Bug description: [Impact] * sudo /usr/lib/klibc/bin/losetup -vf, which appears to be missbuilt, as main(argc) is reset to zero, after ioctl() operations in a function call, quite unexpectadly. [Test Case] * $ sudo /usr/lib/klibc/bin/losetup -vf Loop device is /dev/loop20 loop: can't get info on device /dev/loop20: No such device or address is bad. Note that ioctl() must succeed, thus loop0 device must be configured to trigger the bug. [Regression Potential] * klibc is quite special, as it uses linux kernel headers/assembly. It seems like there is incompatibility between klibc sources, and gcc-9 with linux-5.3 when used to build userspace programmes. * disabling cf-protection and stack-clash-protection did not help. * building with gcc-8 does not exhibit the problem. * the workaround is quite simple in the code, keep a copy of argc to compare to it later in the code. [Other Info] * Original bug report http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64 https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz ... [ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) loop: can't get info on device /dev/loop1: No such device or address BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [6n+ mkdir result + set -x + read LINE + grep -e '^--OUT .* BEGIN-- .* --END--$' qemu-output.txt ++ grep -q /rofs result/lsblk.txt grep: result/lsblk.txt: No such file or directory autopkgtest [21:45:45]: test boot: ---] autopkgtest [21:45:45]: test boot: - - - - - - - - - - results - - - - - - - - - - boot FAIL non-zero exit status 2 autopkgtest [21:45:45]: summary boot FAIL non-zero exit status 2 ... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcc-9/+bug/1850184/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1850184] Re: losetup -f broken in 2.0.6-1ubuntu2
Ah-ha. If loop0 is in use, then the test-case appropriately fails in both unstable and eoan, which is comforting, as I didn't look forward to figuring out why this works in Debian (it doesn't). -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to klibc in Ubuntu. https://bugs.launchpad.net/bugs/1850184 Title: losetup -f broken in 2.0.6-1ubuntu2 Status in gcc-9 package in Ubuntu: New Status in klibc package in Ubuntu: New Status in linux package in Ubuntu: Incomplete Status in gcc-9 source package in Eoan: New Status in klibc source package in Eoan: New Status in linux source package in Eoan: Incomplete Status in gcc-9 source package in Focal: New Status in klibc source package in Focal: New Status in linux source package in Focal: Incomplete Bug description: [Impact] * sudo /usr/lib/klibc/bin/losetup -vf, which appears to be missbuilt, as main(argc) is reset to zero, after ioctl() operations in a function call, quite unexpectadly. [Test Case] * $ sudo /usr/lib/klibc/bin/losetup -vf Loop device is /dev/loop20 loop: can't get info on device /dev/loop20: No such device or address is bad. Note that ioctl() must succeed, thus loop0 device must be configured to trigger the bug. [Regression Potential] * klibc is quite special, as it uses linux kernel headers/assembly. It seems like there is incompatibility between klibc sources, and gcc-9 with linux-5.3 when used to build userspace programmes. * disabling cf-protection and stack-clash-protection did not help. * building with gcc-8 does not exhibit the problem. * the workaround is quite simple in the code, keep a copy of argc to compare to it later in the code. [Other Info] * Original bug report http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64 https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz ... [ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) loop: can't get info on device /dev/loop1: No such device or address BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [6n+ mkdir result + set -x + read LINE + grep -e '^--OUT .* BEGIN-- .* --END--$' qemu-output.txt ++ grep -q /rofs result/lsblk.txt grep: result/lsblk.txt: No such file or directory autopkgtest [21:45:45]: test boot: ---] autopkgtest [21:45:45]: test boot: - - - - - - - - - - results - - - - - - - - - - boot FAIL non-zero exit status 2 autopkgtest [21:45:45]: summary boot FAIL non-zero exit status 2 ... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcc-9/+bug/1850184/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1850184] Re: losetup -f broken in 2.0.6-1ubuntu2
** Description changed: [Impact] - * sudo /usr/lib/klibc/bin/losetup -vf, which appears to be missbuilt, as main(argc) is reset to zero, after ioctl() operations in a function call, quite unexpectadly. - + * sudo /usr/lib/klibc/bin/losetup -vf, which appears to be missbuilt, + as main(argc) is reset to zero, after ioctl() operations in a function + call, quite unexpectadly. + [Test Case] - * sudo /usr/lib/klibc/bin/losetup -vf - -should not fail, and should print next available free loop device + * $ sudo /usr/lib/klibc/bin/losetup -vf + Loop device is /dev/loop20 + loop: can't get info on device /dev/loop20: No such device or address + + is bad. + + Note that ioctl() must succeed, thus loop0 device must be configured to + trigger the bug. + [Regression Potential] - * klibc is quite special, as it uses linux kernel headers/assembly. It + * klibc is quite special, as it uses linux kernel headers/assembly. It seems like there is incompatibility between klibc sources, and gcc-9 with linux-5.3 when used to build userspace programmes. - * disabling cf-protection and stack-clash-protection did not help. + * disabling cf-protection and stack-clash-protection did not help. - * building with gcc-8 does not exhibit the problem. + * building with gcc-8 does not exhibit the problem. - * the workaround is quite simple in the code, keep a copy of argc to + * the workaround is quite simple in the code, keep a copy of argc to compare to it later in the code. [Other Info] - - * Original bug report + + * Original bug report http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64 https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz ... [ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) loop: can't get info on device /dev/loop1: No such device or address BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [6n+ mkdir result + set -x + read LINE + grep -e '^--OUT .* BEGIN-- .* --END--$' qemu-output.txt ++ grep -q /rofs result/lsblk.txt grep: result/lsblk.txt: No such file or directory autopkgtest [21:45:45]: test boot: ---] autopkgtest [21:45:45]: test boot: - - - - - - - - - - results - - - - - - - - - - boot FAIL non-zero exit status 2 autopkgtest [21:45:45]: summary boot FAIL non-zero exit status 2 ... -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to klibc in Ubuntu. https://bugs.launchpad.net/bugs/1850184 Title: losetup -f broken in 2.0.6-1ubuntu2 Status in gcc-9 package in Ubuntu: New Status in klibc package in Ubuntu: New Status in linux package in Ubuntu: Incomplete Status in gcc-9 source package in Eoan: New Status in klibc source package in Eoan: New Status in linux source package in Eoan: Incomplete Status in gcc-9 source package in Focal: New Status in klibc source package in Focal: New Status in linux source package in Focal: Incomplete Bug description: [Impact] * sudo /usr/lib/klibc/bin/losetup -vf, which appears to be missbuilt, as main(argc) is reset to zero, after ioctl() operations in a function call, quite unexpectadly. [Test Case] * $ sudo /usr/lib/klibc/bin/losetup -vf Loop device is /dev/loop20 loop: can't get info on device /dev/loop20: No such device or address is bad. Note that ioctl() must succeed, thus loop0 device must be configured to trigger the bug. [Regression Potential] * klibc is quite special, as it uses linux kernel headers/assembly. It seems like there is incompatibility between klibc sources, and gcc-9 with linux-5.3 when used to build userspace programmes. * disabling cf-protection and stack-clash-protection did not help. * building with gcc-8 does not exhibit the problem. * the workaround is quite simple in the code, keep a copy of argc to compare to it later in the code. [Other Info] * Original bug report http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64 https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz ... [ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) loop: can't get info on device /dev/loop1: No such device or address BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [6n+ mkdir result + set -x + read LINE
[Touch-packages] [Bug 1850184] Re: losetup -f broken in 2.0.6-1ubuntu2
The testcase here doesn't seem to be working (or, rather, failing) for me, which makes it harder to investigate this. It passes on both sid and eoan for me: (sid-amd64)root@nosferatu:~# dpkg -l \*klibc\* Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Architecture Description +++-==---=== ii klibc-utils2.0.7-1 amd64small utilities built with klibc for early boot ii libklibc:amd64 2.0.7-1 amd64minimal libc subset for use with initramfs (sid-amd64)root@nosferatu:~# /usr/lib/klibc/bin/losetup -vf Loop device is /dev/loop0 /dev/loop0 (sid-amd64)root@nosferatu:~# (eoan-amd64)root@nosferatu:~# dpkg -l \*klibc\* Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name VersionArchitecture Description +++-==-==--=== ii klibc-utils2.0.6-1ubuntu2 amd64small utilities built with klibc for early boot ii libklibc:amd64 2.0.6-1ubuntu2 amd64minimal libc subset for use with initramfs (eoan-amd64)root@nosferatu:~# /usr/lib/klibc/bin/losetup -vf Loop device is /dev/loop0 /dev/loop0 (eoan-amd64)root@nosferatu:~# -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to klibc in Ubuntu. https://bugs.launchpad.net/bugs/1850184 Title: losetup -f broken in 2.0.6-1ubuntu2 Status in gcc-9 package in Ubuntu: New Status in klibc package in Ubuntu: New Status in linux package in Ubuntu: Incomplete Status in gcc-9 source package in Eoan: New Status in klibc source package in Eoan: New Status in linux source package in Eoan: Incomplete Status in gcc-9 source package in Focal: New Status in klibc source package in Focal: New Status in linux source package in Focal: Incomplete Bug description: [Impact] * sudo /usr/lib/klibc/bin/losetup -vf, which appears to be missbuilt, as main(argc) is reset to zero, after ioctl() operations in a function call, quite unexpectadly. [Test Case] * $ sudo /usr/lib/klibc/bin/losetup -vf Loop device is /dev/loop20 loop: can't get info on device /dev/loop20: No such device or address is bad. Note that ioctl() must succeed, thus loop0 device must be configured to trigger the bug. [Regression Potential] * klibc is quite special, as it uses linux kernel headers/assembly. It seems like there is incompatibility between klibc sources, and gcc-9 with linux-5.3 when used to build userspace programmes. * disabling cf-protection and stack-clash-protection did not help. * building with gcc-8 does not exhibit the problem. * the workaround is quite simple in the code, keep a copy of argc to compare to it later in the code. [Other Info] * Original bug report http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64 https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz ... [ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) loop: can't get info on device /dev/loop1: No such device or address BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [6n+ mkdir result + set -x + read LINE + grep -e '^--OUT .* BEGIN-- .* --END--$' qemu-output.txt ++ grep -q /rofs result/lsblk.txt grep: result/lsblk.txt: No such file or directory autopkgtest [21:45:45]: test boot: ---] autopkgtest [21:45:45]: test boot: - - - - - - - - - - results - - - - - - - - - - boot FAIL non-zero exit status 2 autopkgtest [21:45:45]: summary boot FAIL non-zero exit status 2 ... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcc-9/+bug/1850184/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1850184] Re: losetup -f broken in 2.0.6-1ubuntu2
** Description changed: + [Impact] + + * sudo /usr/lib/klibc/bin/losetup -vf, which appears to be missbuilt, as main(argc) is reset to zero, after ioctl() operations in a function call, quite unexpectadly. + + [Test Case] + + * sudo /usr/lib/klibc/bin/losetup -vf + +should not fail, and should print next available free loop device + + [Regression Potential] + + * klibc is quite special, as it uses linux kernel headers/assembly. It + seems like there is incompatibility between klibc sources, and gcc-9 + with linux-5.3 when used to build userspace programmes. + + * disabling cf-protection and stack-clash-protection did not help. + + * building with gcc-8 does not exhibit the problem. + + * the workaround is quite simple in the code, keep a copy of argc to + compare to it later in the code. + + [Other Info] + + * Original bug report + http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64 https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz ... [ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) loop: can't get info on device /dev/loop1: No such device or address - BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [6n+ mkdir result + set -x + read LINE + grep -e '^--OUT .* BEGIN-- .* --END--$' qemu-output.txt ++ grep -q /rofs result/lsblk.txt grep: result/lsblk.txt: No such file or directory autopkgtest [21:45:45]: test boot: ---] autopkgtest [21:45:45]: test boot: - - - - - - - - - - results - - - - - - - - - - boot FAIL non-zero exit status 2 autopkgtest [21:45:45]: summary boot FAIL non-zero exit status 2 ... -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to klibc in Ubuntu. https://bugs.launchpad.net/bugs/1850184 Title: losetup -f broken in 2.0.6-1ubuntu2 Status in gcc-9 package in Ubuntu: New Status in klibc package in Ubuntu: New Status in linux package in Ubuntu: Incomplete Status in gcc-9 source package in Eoan: New Status in klibc source package in Eoan: New Status in linux source package in Eoan: Incomplete Status in gcc-9 source package in Focal: New Status in klibc source package in Focal: New Status in linux source package in Focal: Incomplete Bug description: [Impact] * sudo /usr/lib/klibc/bin/losetup -vf, which appears to be missbuilt, as main(argc) is reset to zero, after ioctl() operations in a function call, quite unexpectadly. [Test Case] * sudo /usr/lib/klibc/bin/losetup -vf should not fail, and should print next available free loop device [Regression Potential] * klibc is quite special, as it uses linux kernel headers/assembly. It seems like there is incompatibility between klibc sources, and gcc-9 with linux-5.3 when used to build userspace programmes. * disabling cf-protection and stack-clash-protection did not help. * building with gcc-8 does not exhibit the problem. * the workaround is quite simple in the code, keep a copy of argc to compare to it later in the code. [Other Info] * Original bug report http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64 https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz ... [ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) loop: can't get info on device /dev/loop1: No such device or address BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [6n+ mkdir result + set -x + read LINE + grep -e '^--OUT .* BEGIN-- .* --END--$' qemu-output.txt ++ grep -q /rofs result/lsblk.txt grep: result/lsblk.txt: No such file or directory autopkgtest [21:45:45]: test boot: ---] autopkgtest [21:45:45]: test boot: - - - - - - - - - - results - - - - - - - - - - boot FAIL non-zero exit status 2 autopkgtest [21:45:45]: summary boot FAIL non-zero exit status 2 ... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcc-9/+bug/1850184/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1850184] Re: losetup -f broken in 2.0.6-1ubuntu2
** Patch added: "save-argc.patch" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1850184/+attachment/5301773/+files/save-argc.patch -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to klibc in Ubuntu. https://bugs.launchpad.net/bugs/1850184 Title: losetup -f broken in 2.0.6-1ubuntu2 Status in gcc-9 package in Ubuntu: New Status in klibc package in Ubuntu: New Status in linux package in Ubuntu: New Status in gcc-9 source package in Eoan: New Status in klibc source package in Eoan: New Status in linux source package in Eoan: New Status in gcc-9 source package in Focal: New Status in klibc source package in Focal: New Status in linux source package in Focal: New Bug description: http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64 https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz ... [ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) loop: can't get info on device /dev/loop1: No such device or address BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [6n+ mkdir result + set -x + read LINE + grep -e '^--OUT .* BEGIN-- .* --END--$' qemu-output.txt ++ grep -q /rofs result/lsblk.txt grep: result/lsblk.txt: No such file or directory autopkgtest [21:45:45]: test boot: ---] autopkgtest [21:45:45]: test boot: - - - - - - - - - - results - - - - - - - - - - boot FAIL non-zero exit status 2 autopkgtest [21:45:45]: summary boot FAIL non-zero exit status 2 ... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcc-9/+bug/1850184/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1850184] Re: losetup -f broken in 2.0.6-1ubuntu2
So, I'm not sure if this is a kernel headers/assembly bug (as ioctl is used from there), gcc-9 bug, or the combination of the two. I'm going to save argc, and use a saved copy for now, but this needs deeper analysis. This sounds like a retpoline mitigation. ** Also affects: klibc (Ubuntu Focal) Importance: Undecided Status: New ** Also affects: klibc (Ubuntu Eoan) Importance: Undecided Status: New ** Also affects: gcc-9 (Ubuntu) Importance: Undecided Status: New ** Also affects: linux (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to klibc in Ubuntu. https://bugs.launchpad.net/bugs/1850184 Title: losetup -f broken in 2.0.6-1ubuntu2 Status in gcc-9 package in Ubuntu: New Status in klibc package in Ubuntu: New Status in linux package in Ubuntu: New Status in gcc-9 source package in Eoan: New Status in klibc source package in Eoan: New Status in linux source package in Eoan: New Status in gcc-9 source package in Focal: New Status in klibc source package in Focal: New Status in linux source package in Focal: New Bug description: http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64 https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz ... [ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) loop: can't get info on device /dev/loop1: No such device or address BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [6n+ mkdir result + set -x + read LINE + grep -e '^--OUT .* BEGIN-- .* --END--$' qemu-output.txt ++ grep -q /rofs result/lsblk.txt grep: result/lsblk.txt: No such file or directory autopkgtest [21:45:45]: test boot: ---] autopkgtest [21:45:45]: test boot: - - - - - - - - - - results - - - - - - - - - - boot FAIL non-zero exit status 2 autopkgtest [21:45:45]: summary boot FAIL non-zero exit status 2 ... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcc-9/+bug/1850184/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1850184] Re: losetup -f broken in 2.0.6-1ubuntu2
so calling an ioctl seems to clear the global argc in klibc built with gcc-9 163 if(ioctl (fd, LOOP_GET_STATUS, ) == 0) (gdb) bt #0 find_unused_loop_device () at usr/utils/losetup.c:163 #1 0x00401135 in main (argc=2, argv=0x7fffe618) at usr/utils/losetup.c:454 (gdb) n 164 someloop++; /* in use */ (gdb) bt #0 find_unused_loop_device () at usr/utils/losetup.c:164 #1 0x00401135 in main (argc=0, argv=0x7fffe618) at usr/utils/losetup.c:454 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to klibc in Ubuntu. https://bugs.launchpad.net/bugs/1850184 Title: losetup -f broken in 2.0.6-1ubuntu2 Status in klibc package in Ubuntu: New Bug description: http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64 https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz ... [ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) loop: can't get info on device /dev/loop1: No such device or address BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [6n+ mkdir result + set -x + read LINE + grep -e '^--OUT .* BEGIN-- .* --END--$' qemu-output.txt ++ grep -q /rofs result/lsblk.txt grep: result/lsblk.txt: No such file or directory autopkgtest [21:45:45]: test boot: ---] autopkgtest [21:45:45]: test boot: - - - - - - - - - - results - - - - - - - - - - boot FAIL non-zero exit status 2 autopkgtest [21:45:45]: summary boot FAIL non-zero exit status 2 ... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/klibc/+bug/1850184/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1850184] Re: losetup -f broken in 2.0.6-1ubuntu2
Fun: this works with 2.0.7-1 built with gcc-9 in Debian. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to klibc in Ubuntu. https://bugs.launchpad.net/bugs/1850184 Title: losetup -f broken in 2.0.6-1ubuntu2 Status in klibc package in Ubuntu: New Bug description: http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64 https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz ... [ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) loop: can't get info on device /dev/loop1: No such device or address BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [6n+ mkdir result + set -x + read LINE + grep -e '^--OUT .* BEGIN-- .* --END--$' qemu-output.txt ++ grep -q /rofs result/lsblk.txt grep: result/lsblk.txt: No such file or directory autopkgtest [21:45:45]: test boot: ---] autopkgtest [21:45:45]: test boot: - - - - - - - - - - results - - - - - - - - - - boot FAIL non-zero exit status 2 autopkgtest [21:45:45]: summary boot FAIL non-zero exit status 2 ... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/klibc/+bug/1850184/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1850184] Re: losetup -f broken in 2.0.6-1ubuntu2
device = find_unused_loop_device();
if (device == NULL)
return -1;
if (verbose)
printf("Loop device is %s\n", device);
if (argc == optind) {
printf("%s\n", device);
return 0;
}
file = argv[optind];
Somehow... argc == optind condition is false, and instead of exiting the
program, we go into "show" mode on the just detected loop device, which
fails, as it is a free one and there is nothing to show.
--
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https://bugs.launchpad.net/bugs/1850184
Title:
losetup -f broken in 2.0.6-1ubuntu2
Status in klibc package in Ubuntu:
New
Bug description:
http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac
/autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz
...
[ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4
subsystem
[ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts:
(null)
loop: can't get info on device /dev/loop1: No such device or address
BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash)
Enter 'help' for a list of built-in commands.
(initramfs) [6n+ mkdir result
+ set -x
+ read LINE
+ grep -e '^--OUT .* BEGIN-- .* --END--$' qemu-output.txt
++ grep -q /rofs result/lsblk.txt
grep: result/lsblk.txt: No such file or directory
autopkgtest [21:45:45]: test boot: ---]
autopkgtest [21:45:45]: test boot: - - - - - - - - - - results - - - - - - -
- - -
boot FAIL non-zero exit status 2
autopkgtest [21:45:45]: summary
boot FAIL non-zero exit status 2
...
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/klibc/+bug/1850184/+subscriptions
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[Touch-packages] [Bug 1850184] Re: losetup -f broken in 2.0.6-1ubuntu2
Rebuilding with gcc-8 => losetup works Rebuilding with gcc-9 => losetup does not work Rebuilding with gcc-9 & -fcf-protection=none & -fno-stack-clash-protection does not work (and double checked that there are no gcc invocations in the build log without those two options set) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to klibc in Ubuntu. https://bugs.launchpad.net/bugs/1850184 Title: losetup -f broken in 2.0.6-1ubuntu2 Status in klibc package in Ubuntu: New Bug description: http://autopkgtest.ubuntu.com/packages/c/casper/focal/amd64 https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac /autopkgtest-focal/focal/amd64/c/casper/20191025_214555_df8b8@/log.gz ... [ 11.751912] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 11.761441] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) loop: can't get info on device /dev/loop1: No such device or address BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [6n+ mkdir result + set -x + read LINE + grep -e '^--OUT .* BEGIN-- .* --END--$' qemu-output.txt ++ grep -q /rofs result/lsblk.txt grep: result/lsblk.txt: No such file or directory autopkgtest [21:45:45]: test boot: ---] autopkgtest [21:45:45]: test boot: - - - - - - - - - - results - - - - - - - - - - boot FAIL non-zero exit status 2 autopkgtest [21:45:45]: summary boot FAIL non-zero exit status 2 ... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/klibc/+bug/1850184/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
