[Kernel-packages] [Bug 1755624] Re: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode
** Tags removed: kernel-da-key -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1755624 Title: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: With an intel-microcode package based off of https://downloadcenter.intel.com/download/27591/Linux-Processor- Microcode-Data-File, when booting, the kernel 4.15.0-10.11-generic reports the following in dmesg: [0.00] microcode: microcode updated early to revision 0x84, date = 2018-01-21 [0.00] Intel Spectre v2 broken microcode detected; disabling Speculation Control And indeed, none of ibrs, ibpb, or stibp show up in /proc/cpuinfo. Other testers of the updated microcode report seeing the same thing. The processor this is being tested on is: cpu family : 6 model : 142 model name : Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz stepping: 9 microcode : 0x84 The test for the microcode is in https://git.launchpad.net/~ubuntu- kernel/ubuntu/+source/linux/+git/bionic/tree/arch/x86/kernel/cpu/intel.c#n178 ; specifically, it looks like bad_spectre_microcode(c) is returning true. It seems https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d37fc6d360a404b208547ba112e7dabb6533c7fc has not been pulled in yet (though it's staged as 3e442a86b70eea274d01569244584d91e2f287e7 in bionic/master-next and is in 4.15.0-12.13 in bionic-proposed), which addresses things for Kaby Lake processors, but other processers may need to be verified for correctness. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1755624/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1755624] Re: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode
Now fixed here too, on 4.15.0-14 kernel oem@ubuntu:~$ journalctl -b | grep Spectre Apr 04 08:40:23 ubuntu kernel: Spectre V2 : Mitigation: Full generic retpoline Apr 04 08:40:23 ubuntu kernel: Spectre V2 : Spectre v2 mitigation: Filling RSB on context switch Apr 04 08:40:23 ubuntu kernel: Spectre V2 : Spectre v2 mitigation: Enabling Indirect Branch Prediction Barrier Apr 04 08:40:23 ubuntu kernel: Spectre V2 : Enabling Restricted Speculation for firmware calls -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1755624 Title: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: With an intel-microcode package based off of https://downloadcenter.intel.com/download/27591/Linux-Processor- Microcode-Data-File, when booting, the kernel 4.15.0-10.11-generic reports the following in dmesg: [0.00] microcode: microcode updated early to revision 0x84, date = 2018-01-21 [0.00] Intel Spectre v2 broken microcode detected; disabling Speculation Control And indeed, none of ibrs, ibpb, or stibp show up in /proc/cpuinfo. Other testers of the updated microcode report seeing the same thing. The processor this is being tested on is: cpu family : 6 model : 142 model name : Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz stepping: 9 microcode : 0x84 The test for the microcode is in https://git.launchpad.net/~ubuntu- kernel/ubuntu/+source/linux/+git/bionic/tree/arch/x86/kernel/cpu/intel.c#n178 ; specifically, it looks like bad_spectre_microcode(c) is returning true. It seems https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d37fc6d360a404b208547ba112e7dabb6533c7fc has not been pulled in yet (though it's staged as 3e442a86b70eea274d01569244584d91e2f287e7 in bionic/master-next and is in 4.15.0-12.13 in bionic-proposed), which addresses things for Kaby Lake processors, but other processers may need to be verified for correctness. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1755624/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1755624] Re: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode
Also discussed here: https://lkml.org/lkml/2018/2/12/123 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1755624 Title: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: With an intel-microcode package based off of https://downloadcenter.intel.com/download/27591/Linux-Processor- Microcode-Data-File, when booting, the kernel 4.15.0-10.11-generic reports the following in dmesg: [0.00] microcode: microcode updated early to revision 0x84, date = 2018-01-21 [0.00] Intel Spectre v2 broken microcode detected; disabling Speculation Control And indeed, none of ibrs, ibpb, or stibp show up in /proc/cpuinfo. Other testers of the updated microcode report seeing the same thing. The processor this is being tested on is: cpu family : 6 model : 142 model name : Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz stepping: 9 microcode : 0x84 The test for the microcode is in https://git.launchpad.net/~ubuntu- kernel/ubuntu/+source/linux/+git/bionic/tree/arch/x86/kernel/cpu/intel.c#n178 ; specifically, it looks like bad_spectre_microcode(c) is returning true. It seems https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d37fc6d360a404b208547ba112e7dabb6533c7fc has not been pulled in yet (though it's staged as 3e442a86b70eea274d01569244584d91e2f287e7 in bionic/master-next and is in 4.15.0-12.13 in bionic-proposed), which addresses things for Kaby Lake processors, but other processers may need to be verified for correctness. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1755624/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1755624] Re: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode
Thanks Steve for the head up my cpu is i5-6500 and it seems it should not be blacklisted now (at least the request has been done): http://lists-archives.com/linux-kernel/29038556-x86-spectre_v2-remove-0xc2-from-spectre_bad_microcodes.html Initially i have been confused by the 20180312 vs 2017-11-16 output. So that case needs some cleaning. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1755624 Title: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: With an intel-microcode package based off of https://downloadcenter.intel.com/download/27591/Linux-Processor- Microcode-Data-File, when booting, the kernel 4.15.0-10.11-generic reports the following in dmesg: [0.00] microcode: microcode updated early to revision 0x84, date = 2018-01-21 [0.00] Intel Spectre v2 broken microcode detected; disabling Speculation Control And indeed, none of ibrs, ibpb, or stibp show up in /proc/cpuinfo. Other testers of the updated microcode report seeing the same thing. The processor this is being tested on is: cpu family : 6 model : 142 model name : Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz stepping: 9 microcode : 0x84 The test for the microcode is in https://git.launchpad.net/~ubuntu- kernel/ubuntu/+source/linux/+git/bionic/tree/arch/x86/kernel/cpu/intel.c#n178 ; specifically, it looks like bad_spectre_microcode(c) is returning true. It seems https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d37fc6d360a404b208547ba112e7dabb6533c7fc has not been pulled in yet (though it's staged as 3e442a86b70eea274d01569244584d91e2f287e7 in bionic/master-next and is in 4.15.0-12.13 in bionic-proposed), which addresses things for Kaby Lake processors, but other processers may need to be verified for correctness. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1755624/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1755624] Re: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode
Hi dino99, Microcode rev 0xc2 looks to be the correct revision for your processor: $ iucode-tool -L microcode-20180312.dat | grep 506e3 01/147: sig 0x000506e3, pf mask 0x36, 2017-11-16, rev 0x00c2, size 99328 (You can perform a similar check on the specific microcode for your processor on the file in the installed package: $ iucode-tool -L /lib/firmware/intel-ucode/06-5e-03 microcode bundle 1: /lib/firmware/intel-ucode/06-5e-03 001/001: sig 0x000506e3, pf_mask 0x36, 2017-11-16, rev 0x00c2, size 99328 ) And in the detailed description from https://downloadcenter.intel.com/download/27591/Linux-Processor- Microcode-Data-File: SKL R0 6-5e-3:36 ba->c2 Processor model 0x5e is defined as #define INTEL_FAM6_SKYLAKE_DESKTOP 0x5E in the kernel, and looking at the upstream kernel, microcode version 0xc2 for INTEL_FAM6_SKYLAKE_DESKTOP is still blacklisted as being unfixed for spectre: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/x86/kernel/cpu/intel.c#n126 So unfortunately, this all looks correct for your processor. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1755624 Title: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: With an intel-microcode package based off of https://downloadcenter.intel.com/download/27591/Linux-Processor- Microcode-Data-File, when booting, the kernel 4.15.0-10.11-generic reports the following in dmesg: [0.00] microcode: microcode updated early to revision 0x84, date = 2018-01-21 [0.00] Intel Spectre v2 broken microcode detected; disabling Speculation Control And indeed, none of ibrs, ibpb, or stibp show up in /proc/cpuinfo. Other testers of the updated microcode report seeing the same thing. The processor this is being tested on is: cpu family : 6 model : 142 model name : Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz stepping: 9 microcode : 0x84 The test for the microcode is in https://git.launchpad.net/~ubuntu- kernel/ubuntu/+source/linux/+git/bionic/tree/arch/x86/kernel/cpu/intel.c#n178 ; specifically, it looks like bad_spectre_microcode(c) is returning true. It seems https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d37fc6d360a404b208547ba112e7dabb6533c7fc has not been pulled in yet (though it's staged as 3e442a86b70eea274d01569244584d91e2f287e7 in bionic/master-next and is in 4.15.0-12.13 in bionic-proposed), which addresses things for Kaby Lake processors, but other processers may need to be verified for correctness. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1755624/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1755624] Re: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode
More tests: - purging intel-microcode & iucode-tool, then rebooting, i get: kernel: [Firmware Bug]: TSC_DEADLINE disabled due to Errata; please update microcode to version: 0xb2 (or later) - reinstalling the 2 packages above (3.20180312.0~ubuntu18.04.1) and rebooting, i get: kernel: microcode: microcode updated early to revision 0xc2, date = 2017-11-16 As previously, purging then reinstalling still show that old version. Is it an initrd path issue ? - running: (cpio -t; zcat | cpio -t) < /boot/initrd.img-4.15.0-12-generic kernel kernel/x86 kernel/x86/microcode kernel/x86/microcode/.enuineIntel.align.0123456789abc kernel/x86/microcode/GenuineIntel.bin 196 blocks ... -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1755624 Title: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: With an intel-microcode package based off of https://downloadcenter.intel.com/download/27591/Linux-Processor- Microcode-Data-File, when booting, the kernel 4.15.0-10.11-generic reports the following in dmesg: [0.00] microcode: microcode updated early to revision 0x84, date = 2018-01-21 [0.00] Intel Spectre v2 broken microcode detected; disabling Speculation Control And indeed, none of ibrs, ibpb, or stibp show up in /proc/cpuinfo. Other testers of the updated microcode report seeing the same thing. The processor this is being tested on is: cpu family : 6 model : 142 model name : Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz stepping: 9 microcode : 0x84 The test for the microcode is in https://git.launchpad.net/~ubuntu- kernel/ubuntu/+source/linux/+git/bionic/tree/arch/x86/kernel/cpu/intel.c#n178 ; specifically, it looks like bad_spectre_microcode(c) is returning true. It seems https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d37fc6d360a404b208547ba112e7dabb6533c7fc has not been pulled in yet (though it's staged as 3e442a86b70eea274d01569244584d91e2f287e7 in bionic/master-next and is in 4.15.0-12.13 in bionic-proposed), which addresses things for Kaby Lake processors, but other processers may need to be verified for correctness. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1755624/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1755624] Re: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode
So i have reinstalled both intel-microcode & iucode-tool and then rebooted. Still get the latest microcode version with the error; even if the reinstall has not displayed warning/error and the kernel rebuilt as expected. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1755624 Title: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: With an intel-microcode package based off of https://downloadcenter.intel.com/download/27591/Linux-Processor- Microcode-Data-File, when booting, the kernel 4.15.0-10.11-generic reports the following in dmesg: [0.00] microcode: microcode updated early to revision 0x84, date = 2018-01-21 [0.00] Intel Spectre v2 broken microcode detected; disabling Speculation Control And indeed, none of ibrs, ibpb, or stibp show up in /proc/cpuinfo. Other testers of the updated microcode report seeing the same thing. The processor this is being tested on is: cpu family : 6 model : 142 model name : Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz stepping: 9 microcode : 0x84 The test for the microcode is in https://git.launchpad.net/~ubuntu- kernel/ubuntu/+source/linux/+git/bionic/tree/arch/x86/kernel/cpu/intel.c#n178 ; specifically, it looks like bad_spectre_microcode(c) is returning true. It seems https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d37fc6d360a404b208547ba112e7dabb6533c7fc has not been pulled in yet (though it's staged as 3e442a86b70eea274d01569244584d91e2f287e7 in bionic/master-next and is in 4.15.0-12.13 in bionic-proposed), which addresses things for Kaby Lake processors, but other processers may need to be verified for correctness. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1755624/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1755624] Re: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode
Something abnormal: - installed: intel-microcode (3.20180312.0~ubuntu18.04.1) bionic - but log shows: microcode: microcode updated early to revision 0xc2, date = 2017-11-16 Looks like the latest upgrade is not use by the kernel. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1755624 Title: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: With an intel-microcode package based off of https://downloadcenter.intel.com/download/27591/Linux-Processor- Microcode-Data-File, when booting, the kernel 4.15.0-10.11-generic reports the following in dmesg: [0.00] microcode: microcode updated early to revision 0x84, date = 2018-01-21 [0.00] Intel Spectre v2 broken microcode detected; disabling Speculation Control And indeed, none of ibrs, ibpb, or stibp show up in /proc/cpuinfo. Other testers of the updated microcode report seeing the same thing. The processor this is being tested on is: cpu family : 6 model : 142 model name : Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz stepping: 9 microcode : 0x84 The test for the microcode is in https://git.launchpad.net/~ubuntu- kernel/ubuntu/+source/linux/+git/bionic/tree/arch/x86/kernel/cpu/intel.c#n178 ; specifically, it looks like bad_spectre_microcode(c) is returning true. It seems https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d37fc6d360a404b208547ba112e7dabb6533c7fc has not been pulled in yet (though it's staged as 3e442a86b70eea274d01569244584d91e2f287e7 in bionic/master-next and is in 4.15.0-12.13 in bionic-proposed), which addresses things for Kaby Lake processors, but other processers may need to be verified for correctness. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1755624/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1755624] Re: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode
>From the 4.15.0.12-13 still get the error oem@ubuntu:~$ journalctl -b | grep microcode kernel: microcode: microcode updated early to revision 0xc2, date = 2017-11-16 kernel: Intel Spectre v2 broken microcode detected; disabling Speculation Control kernel: microcode: sig=0x506e3, pf=0x2, revision=0xc2 kernel: microcode: Microcode Update Driver: v2.2. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1755624 Title: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: With an intel-microcode package based off of https://downloadcenter.intel.com/download/27591/Linux-Processor- Microcode-Data-File, when booting, the kernel 4.15.0-10.11-generic reports the following in dmesg: [0.00] microcode: microcode updated early to revision 0x84, date = 2018-01-21 [0.00] Intel Spectre v2 broken microcode detected; disabling Speculation Control And indeed, none of ibrs, ibpb, or stibp show up in /proc/cpuinfo. Other testers of the updated microcode report seeing the same thing. The processor this is being tested on is: cpu family : 6 model : 142 model name : Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz stepping: 9 microcode : 0x84 The test for the microcode is in https://git.launchpad.net/~ubuntu- kernel/ubuntu/+source/linux/+git/bionic/tree/arch/x86/kernel/cpu/intel.c#n178 ; specifically, it looks like bad_spectre_microcode(c) is returning true. It seems https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d37fc6d360a404b208547ba112e7dabb6533c7fc has not been pulled in yet (though it's staged as 3e442a86b70eea274d01569244584d91e2f287e7 in bionic/master-next and is in 4.15.0-12.13 in bionic-proposed), which addresses things for Kaby Lake processors, but other processers may need to be verified for correctness. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1755624/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1755624] Re: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode
4.15.0-12.13-generic from bionic-proposed is also working for me. Relevant CPU model info (same as in description): cpu family : 6 model : 142 model name : Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz stepping: 9 microcode : 0x84 Model 142 corresponds to 0x8E in hex, which the kernel defines as: #define INTEL_FAM6_KABYLAKE_MOBILE 0x8E After booting into the 4.15.0-12.13-generic kernel, /proc/cpuinfo now contains "ibpb ibrs stibp" as well. Thanks! -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1755624 Title: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: With an intel-microcode package based off of https://downloadcenter.intel.com/download/27591/Linux-Processor- Microcode-Data-File, when booting, the kernel 4.15.0-10.11-generic reports the following in dmesg: [0.00] microcode: microcode updated early to revision 0x84, date = 2018-01-21 [0.00] Intel Spectre v2 broken microcode detected; disabling Speculation Control And indeed, none of ibrs, ibpb, or stibp show up in /proc/cpuinfo. Other testers of the updated microcode report seeing the same thing. The processor this is being tested on is: cpu family : 6 model : 142 model name : Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz stepping: 9 microcode : 0x84 The test for the microcode is in https://git.launchpad.net/~ubuntu- kernel/ubuntu/+source/linux/+git/bionic/tree/arch/x86/kernel/cpu/intel.c#n178 ; specifically, it looks like bad_spectre_microcode(c) is returning true. It seems https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d37fc6d360a404b208547ba112e7dabb6533c7fc has not been pulled in yet (though it's staged as 3e442a86b70eea274d01569244584d91e2f287e7 in bionic/master-next and is in 4.15.0-12.13 in bionic-proposed), which addresses things for Kaby Lake processors, but other processers may need to be verified for correctness. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1755624/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1755624] Re: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode
4.15.0-12.13-generic, from bionic-proposed, fixes this bug for me due to it containing this upstream commit: 1751342095f0d2b36fa8114d8e12c5688c455ac4 Relevant CPU model info from /proc/cpuinfo: cpu family : 6 model : 78 model name : Intel(R) Core(TM) m5-6Y54 CPU @ 1.10GHz stepping: 3 microcode : 0xc2 Model 78 corresponds to 0x4E in hex, which matches this in-kernel model: #define INTEL_FAM6_SKYLAKE_MOBILE 0x4E That's one of the models that was removed in the commit mentioned above. I can also confirm that the flags field of cpuinfo contains "ibpb ibrs stibp". -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1755624 Title: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: With an intel-microcode package based off of https://downloadcenter.intel.com/download/27591/Linux-Processor- Microcode-Data-File, when booting, the kernel 4.15.0-10.11-generic reports the following in dmesg: [0.00] microcode: microcode updated early to revision 0x84, date = 2018-01-21 [0.00] Intel Spectre v2 broken microcode detected; disabling Speculation Control And indeed, none of ibrs, ibpb, or stibp show up in /proc/cpuinfo. Other testers of the updated microcode report seeing the same thing. The processor this is being tested on is: cpu family : 6 model : 142 model name : Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz stepping: 9 microcode : 0x84 The test for the microcode is in https://git.launchpad.net/~ubuntu- kernel/ubuntu/+source/linux/+git/bionic/tree/arch/x86/kernel/cpu/intel.c#n178 ; specifically, it looks like bad_spectre_microcode(c) is returning true. It seems https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d37fc6d360a404b208547ba112e7dabb6533c7fc has not been pulled in yet (though it's staged as 3e442a86b70eea274d01569244584d91e2f287e7 in bionic/master-next and is in 4.15.0-12.13 in bionic-proposed), which addresses things for Kaby Lake processors, but other processers may need to be verified for correctness. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1755624/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1755624] Re: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode
Would it be possible for those that can reproduced this bug to test the proposed kernel and post back if it resolves this bug? See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance! ** Changed in: linux (Ubuntu) Importance: Undecided => High ** Also affects: linux (Ubuntu Bionic) Importance: High Status: Confirmed ** Tags added: bionic kernel-da-key ** Changed in: linux (Ubuntu Bionic) Status: Confirmed => Triaged -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1755624 Title: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: With an intel-microcode package based off of https://downloadcenter.intel.com/download/27591/Linux-Processor- Microcode-Data-File, when booting, the kernel 4.15.0-10.11-generic reports the following in dmesg: [0.00] microcode: microcode updated early to revision 0x84, date = 2018-01-21 [0.00] Intel Spectre v2 broken microcode detected; disabling Speculation Control And indeed, none of ibrs, ibpb, or stibp show up in /proc/cpuinfo. Other testers of the updated microcode report seeing the same thing. The processor this is being tested on is: cpu family : 6 model : 142 model name : Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz stepping: 9 microcode : 0x84 The test for the microcode is in https://git.launchpad.net/~ubuntu- kernel/ubuntu/+source/linux/+git/bionic/tree/arch/x86/kernel/cpu/intel.c#n178 ; specifically, it looks like bad_spectre_microcode(c) is returning true. It seems https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d37fc6d360a404b208547ba112e7dabb6533c7fc has not been pulled in yet (though it's staged as 3e442a86b70eea274d01569244584d91e2f287e7 in bionic/master-next and is in 4.15.0-12.13 in bionic-proposed), which addresses things for Kaby Lake processors, but other processers may need to be verified for correctness. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1755624/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1755624] Re: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode
I see the same issue on my Skylake desktop (sig=0x506e3). The microcode updates at startup (microcode: microcode updated early to revision 0xc2, date = 2017-11-16) but I still get "Intel Spectre v2 broken microcode detected; disabling Speculation Control". I also tested it on Ivy Bridge, Broadwell, and another Skylake system (0x406e3) and it works properly on all those. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1755624 Title: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode Status in linux package in Ubuntu: New Bug description: With an intel-microcode package based off of https://downloadcenter.intel.com/download/27591/Linux-Processor- Microcode-Data-File, when booting, the kernel 4.15.0-10.11-generic reports the following in dmesg: [0.00] microcode: microcode updated early to revision 0x84, date = 2018-01-21 [0.00] Intel Spectre v2 broken microcode detected; disabling Speculation Control And indeed, none of ibrs, ibpb, or stibp show up in /proc/cpuinfo. Other testers of the updated microcode report seeing the same thing. The processor this is being tested on is: cpu family : 6 model : 142 model name : Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz stepping: 9 microcode : 0x84 The test for the microcode is in https://git.launchpad.net/~ubuntu- kernel/ubuntu/+source/linux/+git/bionic/tree/arch/x86/kernel/cpu/intel.c#n178 ; specifically, it looks like bad_spectre_microcode(c) is returning true. It seems https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d37fc6d360a404b208547ba112e7dabb6533c7fc has not been pulled in yet (though it's staged as 3e442a86b70eea274d01569244584d91e2f287e7 in bionic/master-next and is in 4.15.0-12.13 in bionic-proposed), which addresses things for Kaby Lake processors, but other processers may need to be verified for correctness. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1755624/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1755624] Re: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode
** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1755624 Title: With intel-microcode 3.20180312, kernel reports as broken spectre v2 microcode Status in linux package in Ubuntu: Confirmed Bug description: With an intel-microcode package based off of https://downloadcenter.intel.com/download/27591/Linux-Processor- Microcode-Data-File, when booting, the kernel 4.15.0-10.11-generic reports the following in dmesg: [0.00] microcode: microcode updated early to revision 0x84, date = 2018-01-21 [0.00] Intel Spectre v2 broken microcode detected; disabling Speculation Control And indeed, none of ibrs, ibpb, or stibp show up in /proc/cpuinfo. Other testers of the updated microcode report seeing the same thing. The processor this is being tested on is: cpu family : 6 model : 142 model name : Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz stepping: 9 microcode : 0x84 The test for the microcode is in https://git.launchpad.net/~ubuntu- kernel/ubuntu/+source/linux/+git/bionic/tree/arch/x86/kernel/cpu/intel.c#n178 ; specifically, it looks like bad_spectre_microcode(c) is returning true. It seems https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d37fc6d360a404b208547ba112e7dabb6533c7fc has not been pulled in yet (though it's staged as 3e442a86b70eea274d01569244584d91e2f287e7 in bionic/master-next and is in 4.15.0-12.13 in bionic-proposed), which addresses things for Kaby Lake processors, but other processers may need to be verified for correctness. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1755624/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
