Bug#965180: : Re: Bug#965180: openssh-server: Incompatible with libc6=2.31-1, doesn't allow to login!

[Hazel Victoria Campbell]

I ran into the same problem. Same libc6 version, upgrading also fixed it for 
me. The only difference is that it was getting SIGSYS'd when the privilege 
separated child (and only the privilege separated child process) did connect() 
to /dev/log. This meant that unattended upgrades broke my system when it 
upgraded stable ssh-server to +deb10u2. 

I would say it definitely is a fairly severe bug given that
1) running mixed-release debian installs is a thing that people do,
2) upgrade stable-to-stable openssh breaks systems that were previously 
running fine with testing libc6, and
3) it's openssh-server.

Bug#958369: ltrace: reports wrong syscalls on x86_64

[Hazel Victoria Campbell]

Package: ltrace
Version: 0.7.3-6.1
Severity: important

Dear Maintainer,

ltrace reports wrong systemcalls on x86_64.

ltrace output:
% time seconds  usecs/call calls  function
-- --- --- - 
 73.18   77.943882 448173958 SYS_getegid32
 13.12   13.978116 448 31181 SYS_madvise1

correct output:
% time seconds  usecs/call calls  function
-- --- --- - 
 73.56   46.381433 413112122 futex
 13.138.279804 411 20120 restart_syscall

If you build the version from master @ 
https://gitlab.com/cespedes/ltrace/-/tree/ea8928dab8a0a1f549d0ed8ebc6ec563e9fa1159
(this is currently the latest commit)
and apply the pull request @
https://gitlab.com/cespedes/ltrace/-/merge_requests/1
(diff @ https://gitlab.com/cespedes/ltrace/-/merge_requests/1.diff

Then, it produces the expected output.

-- System Information:
Debian Release: 10.3
  APT prefers stable
  APT policy: (995, 'stable'), (994, 'stable-updates'), (950, 'testing'), (40, 
'unstable'), (30, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 5.4.0-0.bpo.2-amd64 (SMP w/8 CPU cores)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, 
TAINT_UNSIGNED_MODULE
Locale: LANG=en_CA.UTF-8, LC_CTYPE=en_CA.UTF-8 (charmap=UTF-8), LANGUAGE= 
(charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages ltrace depends on:
ii  libc62.30-4
ii  libelf1  0.176-1.1
ii  libselinux1  2.8-1+b1

ltrace recommends no packages.

ltrace suggests no packages.

-- no debconf information

Bug#928492: dovecot: doveadm user gives "Error: User listing returned failure"

[Hazel Victoria Campbell]

Source: dovecot
Severity: important
Tags: patch upstream

Dear Maintainer,

On buster, using dovecot with just the default passwd user database,
doveadm user '*'
gives:
Error: User listing returned failure
Fatal: user listing failed
and logs:
May  5 23:23:25 chou dovecot: auth-worker(24219): Error: getpwent() failed: 
Invalid argument

I believe this is the same problem as https://bugs.gentoo.org/667118/ and 
a patch is included there and as a pull request (open) upstream:
https://github.com/dovecot/core/pull/92

-- System Information:
Debian Release: buster/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 4.19.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_CA.UTF-8, LC_CTYPE=en_CA.UTF-8 (charmap=UTF-8), 
LANGUAGE=en_CA.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Bug#923296: linux-image-4.19.0-2-amd64: BTRFS transaction aborted during multiple parallel rm -rf

[Hazel Victoria Campbell]

Package: src:linux
Version: 4.19.16-1
Severity: normal

Dear Maintainer,

While removing a lot of files, (dirvish-cronjob -> dirvish-expire -> rm), BTRFS
bugs out. The relevant section of dmesg follows. The only taint is nvidia.

I don't think dirvish is relevant except that dirvish-expire runs rm on a lot
of hardlinked files. It looks like dirvish-expire calls multiple rm -rf jobs in
parallel, or at least there were multiple rm's left running after the bug. It's
possible due to ctrl-c interrupting dirvish-expire and then restarting it
multiple rm -rf were running *for the same files*. I smell a race condition.
CPU is i7-3770K so 8 processors.

The filesystem was left in a usable state, though read-only. btrfs-check
revealed:

Opening filesystem to check...
Checking filesystem on /dev/mapper/backups3
UUID: 2b571560-1b7c-42af-8dd8-c1bd33de3b76
[1/7] checking root items
[2/7] checking extents
[3/7] checking free space cache
[4/7] checking fs roots
unresolved ref dir 154198790 index 75995 namelen 84 name
api.launchpad.net,1.0,bugs,1201429-application,json,621249424e663ff813b146a2a20a1bC3
filetype 0 errors 3, no dir item, no dir index
unresolved ref dir 154198790 index 75995 namelen 84 name
api.launchpad.net,1.0,bugs,1201429-application,json,621249424e663ff813b146a2a20a1bc3
filetype 1 errors 4, no inode ref
ERROR: errors found in fs roots
found 1684332290048 bytes used, error(s) found
total csum bytes: 1602195336
total tree bytes: 43169284096
total fs tree bytes: 39250362368
total extent tree bytes: 1959067648
btree space waste bytes: 9671228983
file data blocks allocated: 1641163005952
 referenced 2764812832768



[ 1782.723094] BTRFS info (device dm-8): failed to delete reference to
api.launchpad.net,1.0,bugs,1201429-application,json,621249424e663ff813b146a2a20a1bc3,
inode 6868044 parent 154198790
[ 1782.723097] [ cut here ]
[ 1782.723098] BTRFS: Transaction aborted (error -2)
[ 1782.723143] WARNING: CPU: 7 PID: 13532 at fs/btrfs/inode.c:3976
__btrfs_unlink_inode.cold.87+0x57/0x146 [btrfs]
[ 1782.723144] Modules linked in: ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs
fuse tun snd_hrtimer nf_tables snd_seq nvidia_uvm(POE) nfnetlink snd_seq_device
binfmt_misc nls_ascii nls_cp437 vfat fat ext4 crc16 mbcache jbd2 fscrypto ecb
snd_hda_codec_hdmi intel_rapl x86_pkg_temp_thermal intel_powerclamp
snd_hda_codec_via snd_hda_codec_generic kvm_intel snd_hda_intel kvm irqbypass
snd_hda_codec intel_cstate intel_uncore snd_hda_core intel_rapl_perf efi_pstore
snd_hwdep snd_pcm snd_timer mei_me pcspkr iTCO_wdt serio_raw efivars sg
iTCO_vendor_support snd mei soundcore ie31200_edac evdev pcc_cpufreq
nvidia_drm(POE) drm_kms_helper drm nvidia_modeset(POE) nvidia(POE) ipmi_devintf
ipmi_msghandler msr it87 hwmon_vid coretemp loop parport_pc ppdev lp parport
efivarfs ip_tables x_tables autofs4 btrfs zstd_decompress
[ 1782.723177]  zstd_compress xxhash algif_skcipher af_alg ses enclosure
scsi_transport_sas dm_crypt dm_mod raid10 raid456 async_raid6_recov
async_memcpy async_pq async_xor async_tx xor uas usb_storage raid6_pq libcrc32c
crc32c_generic raid0 multipath linear hid_logitech_hidpp hid_logitech_dj
hid_generic usbhid hid raid1 md_mod sr_mod cdrom sd_mod crct10dif_pclmul
crc32_pclmul crc32c_intel ghash_clmulni_intel pcbc xhci_pci mxm_wmi aesni_intel
ehci_pci xhci_hcd ahci libahci ehci_hcd aes_x86_64 crypto_simd libata cryptd
scsi_mod i2c_i801 glue_helper usbcore alx lpc_ich mdio usb_common fan thermal
video wmi button
[ 1782.723206] CPU: 7 PID: 13532 Comm: rm Tainted: P   OE
4.19.0-2-amd64 #1 Debian 4.19.16-1
[ 1782.723207] Hardware name: Gigabyte Technology Co., Ltd. To be filled by
O.E.M./Z77X-UD3H, BIOS F17 08/22/2012
[ 1782.723223] RIP: 0010:__btrfs_unlink_inode.cold.87+0x57/0x146 [btrfs]
[ 1782.723224] Code: ba a8 08 17 00 00 02 44 8b 5d 80 72 23 41 83 fb fb 0f 84
d1 00 00 00 44 89 de 48 c7 c7 98 55 53 c0 44 89 5d a4 e8 0f fc 55 e4 <0f> 0b 44
8b 5d a4 48 8b 7d a8 44 89 d9 ba 88 0f 00 00 44 89 5d a4
[ 1782.723226] RSP: 0018:ad4d0e9bfdb0 EFLAGS: 00010282
[ 1782.723228] RAX:  RBX: 920f9d4e7430 RCX:
0006
[ 1782.723229] RDX: 0007 RSI: 0096 RDI:
9212febd66a0
[ 1782.723230] RBP: ad4d0e9bfe30 R08: 0444 R09:
0007
[ 1782.723231] R10:  R11: 0001 R12:
920f807e35a0
[ 1782.723232] R13: 920f2cdbc850 R14: 9212f1321000 R15:
0930e306
[ 1782.723234] FS:  7f22df820540() GS:9212febc()
knlGS:
[ 1782.723235] CS:  0010 DS:  ES:  CR0: 80050033
[ 1782.723237] CR2: 55b57a8b49a8 CR3: 000317498002 CR4:
001606e0
[ 1782.723238] Call Trace:
[ 1782.723256]  btrfs_unlink_inode+0x17/0x50 [btrfs]
[ 1782.723270]  btrfs_unlink+0x8c/0xd0 [btrfs]
[ 1782.723275]  vfs_unlink+0x109/0x1a0
[ 1782.723277]  do_unlinkat+0x239/0x320
[ 1782.723280]  do_syscall_64+0x53/0x100
[ 1782.723283]  entry_SYSCALL_64_after_hwfram