** Changed in: linux (Ubuntu Xenial)
Status: In Progress => Fix Committed
** Changed in: linux-lts-xenial (Ubuntu Trusty)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1709126
Title:
kernel BUG at [tty_ldisc_reinit] mm/slub.c!
Status in linux package in Ubuntu:
In Progress
Status in linux-lts-xenial package in Ubuntu:
In Progress
Status in linux-lts-xenial source package in Trusty:
Fix Committed
Status in linux source package in Xenial:
Fix Committed
Bug description:
Reported in LP:#1707089:
Reported against v4.4 LTS kernel on 14.04; probably applicable to main v4.4
kernel on 16.04 also.
----------
The ubuntu 14.04 kernel panics on boot about 1% of the time.
[ 0.000000] Linux version 4.4.0-83-generic (buildd@lgw01-10) (gcc version
4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.3) ) #106~14.04.1-Ubuntu SMP Mon Jun 26
18:10:19 UTC 2017 (Ubuntu 4.4.0-83.106~14.04.1-generic 4.4.70)
[ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.4.0-83-generic
root=UUID=1edb4b60-6835-4d9c-8aeb-be3418d70937 ro scsi_mod.use_blk_mq=Y
console=ttyS0
.....
[ 8.510775] ------------[ cut here ]------------
[ 8.512172] kernel BUG at
/build/linux-lts-xenial-ep3zLI/linux-lts-xenial-4.4.0/mm/slub.c:3627!
[ 8.514572] invalid opcode: 0000 [#1] SMP
[ 8.515937] Modules linked in: crct10dif_pclmul crc32_pclmul
ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper
cryptd psmouse virtio_scsi
[ 8.521408] CPU: 3 PID: 1 Comm: init Not tainted 4.4.0-83-generic
#106~14.04.1-Ubuntu
[ 8.523723] Hardware name: Google Google Compute Engine/Google Compute
Engine, BIOS Google 01/01/2011
[ 8.526418] task: ffff8803ee608000 ti: ffff8803ee604000 task.ti:
ffff8803ee604000
[ 8.528521] RIP: 0010:[<ffffffff811e065a>] [<ffffffff811e065a>]
kfree+0x14a/0x150
[ 8.530794] RSP: 0018:ffff8803ee607cf8 EFLAGS: 00010246
[ 8.532516] RAX: ffffea000bb817e0 RBX: ffff8802ee05fbe0 RCX: 000000018040001f
[ 8.534833] RDX: 000077ff80000000 RSI: 0000000000000282 RDI: ffff8802ee05fbe0
[ 8.536833] RBP: ffff8803ee607d10 R08: ffff8800bb80ae80 R09: 000000018040001f
[ 8.538830] R10: 00000000bb80ac01 R11: ffffea000bb817c0 R12: ffff8802ee05fbe0
[ 8.540956] R13: ffffffff814dd53d R14: ffff8803ee747990 R15: 0000000000000000
[ 8.543009] FS: 00007f7d1c626840(0000) GS:ffff8803ffd80000(0000)
knlGS:0000000000000000
[ 8.545542] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8.547433] CR2: 00007f9201dd07d0 CR3: 00000003e8455000 CR4: 00000000001406e0
[ 8.549688] Stack:
[ 8.550384] ffff880036697400 ffff8802ee05fbe0 0000000000000000
ffff8803ee607d40
[ 8.552627] ffffffff814dd53d ffff880036697400 ffff8802ee05fbe0
0000000000000002
[ 8.554791] 0000000000000000 ffff8803ee607d68 ffffffff814ddb24
0000000000000000
[ 8.556542] Call Trace:
[ 8.557249] [<ffffffff814dd53d>] tty_ldisc_reinit+0x6d/0xe0
[ 8.558855] [<ffffffff814ddb24>] tty_ldisc_hangup+0xd4/0x1f0
[ 8.560500] [<ffffffff814d5452>] __tty_hangup+0x302/0x420
[ 8.562263] [<ffffffff814d5580>] tty_vhangup+0x10/0x20
[ 8.563748] [<ffffffff814e0288>] pty_close+0x148/0x190
[ 8.565396] [<ffffffff814d5b35>] tty_release+0x105/0x570
[ 8.566995] [<ffffffff81202f84>] __fput+0xe4/0x210
[ 8.568528] [<ffffffff814dd1a6>] ? tty_ldisc_deref+0x16/0x20
[ 8.570225] [<ffffffff812030ee>] ____fput+0xe/0x10
[ 8.571779] [<ffffffff8109b3c6>] task_work_run+0x86/0xb0
[ 8.573355] [<ffffffff810798d6>] exit_to_usermode_loop+0x73/0xa2
[ 8.575236] [<ffffffff81003a6e>] syscall_return_slowpath+0x4e/0x60
[ 8.576499] [<ffffffff8180c9d8>] int_ret_from_sys_call+0x25/0x8f
[ 8.578334] Code: 8b 03 31 f6 f6 c4 40 74 04 41 8b 73 6c 4c 89 df e8 cc cc fa
ff e9 73 ff ff ff 4c 8d 58 ff e9 20 ff ff ff 49 8b 43 20 a8 01 75 d4 <0f> 0b 0f
1f 40 00 0f 1f 44 00 00 55 48 89 e5 41 57 41 56 41 55
[ 8.586832] RIP [<ffffffff811e065a>] kfree+0x14a/0x150
[ 8.588673] RSP <ffff8803ee607cf8>
[ 8.589869] ---[ end trace 87fcf5b5cdf6b7f0 ]---
[ 8.591565] Kernel panic - not syncing: Attempted to kill init!
exitcode=0x0000000b
[ 8.591565]
[ 8.594520] Kernel Offset: disabled
[ 8.595719] ---[ end Kernel panic - not syncing: Attempted to kill init!
exitcode=0x0000000b
[ 8.595719]
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