Hi John and Casey,
Thanks for your response.
This was a virtual machine, running mainline kernel 3.8.13 (installed from
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.8.13-raring/). The test
that we were running was focusing on crm operations; i.e., we had two such
machines and as nodes in a crm cluster, which was managing a set of
resources, including the virtual IP address, managed by IPAddr2 crm
resource.
Can you pls let me know what other information would be useful?
Thanks,
Alex.
-----Original Message-----
From: John Johansen
Sent: 22 July, 2013 7:42 PM
To: Casey Schaufler
Cc: Alex Lyakas ; [email protected] ; Liran Strugano ;
Yair Hershko ; Shyam Kaushik ; [email protected]
Subject: Re: crash in security_bprm_set_creds
On 07/22/2013 07:56 AM, Casey Schaufler wrote:
On 7/22/2013 7:43 AM, Alex Lyakas wrote:
Greetings all,
Adding AppArmor people to the list.
we had a kernel crash, and looking at stacks there are two
security_bprm_set_creds() calls failing:
[118937.245466] udevd D 0000000000000000 0 20811 20670
0x00000000
[118937.245468] ffff88009cff76a8 0000000000000086 ffff88009cff7728
ffffffff811352ff
[118937.245469] ffff88009cff7fd8 ffff88009cff7fd8 ffff88009cff7fd8
0000000000013f40
[118937.245471] ffff880119ad2e80 ffff880115429740 0000000000000000
ffff880118209a48
[118937.245471] Call Trace:
...
[118937.245506] [<ffffffff81059a39>] oops_exit+0x29/0x30
[118937.245508] [<ffffffff816ee8b3>] oops_end+0x83/0xf0
[118937.245512] [<ffffffff816d49f4>] no_context+0x1ab/0x1ba
[118937.245514] [<ffffffff816d4bd6>] __bad_area_nosemaphore+0x1d3/0x1f2
[118937.245517] [<ffffffff8113d5e5>] ? prep_new_page+0x145/0x1e0
[118937.245519] [<ffffffff816d4c4f>] bad_area+0x45/0x4d
[118937.245521] [<ffffffff816f1938>] __do_page_fault+0x558/0x560
[118937.245524] [<ffffffff8127cfd0>] ? ext4_xattr_get+0x60/0xa0
[118937.245527] [<ffffffff812821fa>] ? ext4_xattr_security_get+0x2a/0x30
[118937.245529] [<ffffffff811be813>] ? generic_getxattr+0x53/0x80
[118937.245531] [<ffffffff816f194e>] do_page_fault+0xe/0x10
[118937.245532] [<ffffffff816f1025>] do_async_page_fault+0x35/0x90
[118937.245534] [<ffffffff816edd48>] async_page_fault+0x28/0x30
[118937.245537] [<ffffffff8130e013>] ?
apparmor_bprm_set_creds+0xb3/0x780
[118937.245539] [<ffffffff8130dfd7>] ?
apparmor_bprm_set_creds+0x77/0x780
[118937.245541] [<ffffffff8116452f>] ? vma_link+0xcf/0xe0
[118937.245545] [<ffffffff812d8b73>] security_bprm_set_creds+0x13/0x20
[118937.245547] [<ffffffff811a0c78>] prepare_binprm+0xb8/0x1e0
[118937.245549] [<ffffffff811a2992>]
do_execve_common.isra.22+0x232/0x330
[118937.245551] [<ffffffff811a2aa8>] do_execve+0x18/0x20
[118937.245553] [<ffffffff811a2d4d>] sys_execve+0x3d/0x60
[118937.245555] [<ffffffff816f6809>] stub_execve+0x69/0xc0
[118937.245558] IPaddr2 D 0000000000000000 0 20818 20813
0x00000000
[118937.245559] ffff8800b4121768 0000000000000086 ffff8800b41217e8
ffffffff811352ff
[118937.245561] ffff8800b4121fd8 ffff8800b4121fd8 ffff8800b4121fd8
0000000000013f40
[118937.245562] ffff880115429740 ffff880079c20000 0000000000000000
ffff880118209a48
[118937.245563] Call Trace:
...
[118937.245596] [<ffffffff81059a39>] oops_exit+0x29/0x30
[118937.245598] [<ffffffff816ee8b3>] oops_end+0x83/0xf0
[118937.245600] [<ffffffff81017d28>] die+0x58/0x90
[118937.245602] [<ffffffff816ee1db>] do_trap+0xcb/0x170
[118937.245604] [<ffffffff810153e5>] do_invalid_op+0x95/0xb0
[118937.245606] [<ffffffff8130f481>] ? free_profile+0x1d1/0x1e0
[118937.245608] [<ffffffff8105a8bc>] ? console_trylock+0x1c/0x70
[118937.245611] [<ffffffff8105a9ae>] ?
console_trylock_for_printk+0x9e/0xb0
[118937.245613] [<ffffffff816f751e>] invalid_op+0x1e/0x30
[118937.245615] [<ffffffff8130f481>] ? free_profile+0x1d1/0x1e0
[118937.245616] [<ffffffff8130f481>] ? free_profile+0x1d1/0x1e0
[118937.245618] [<ffffffff8130f4a2>] aa_free_profile_kref+0x12/0x20
[118937.245620] [<ffffffff8130e203>] apparmor_bprm_set_creds+0x2a3/0x780
[118937.245622] [<ffffffff8116452f>] ? vma_link+0xcf/0xe0
[118937.245624] [<ffffffff812d8b73>] security_bprm_set_creds+0x13/0x20
[118937.245625] [<ffffffff811a0c78>] prepare_binprm+0xb8/0x1e0
[118937.245627] [<ffffffff811a2992>]
do_execve_common.isra.22+0x232/0x330
[118937.245629] [<ffffffff811a2aa8>] do_execve+0x18/0x20
[118937.245631] [<ffffffff811a2d4d>] sys_execve+0x3d/0x60
[118937.245633] [<ffffffff816f6809>] stub_execve+0x69/0xc0
Kernel is 3.8.13.
Can anybody advise whether this is some known issue, or how to debug
it further?
This isn't a known issue. Do we have some more context to try tracking this
down?
Thanks,
Alex.
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