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Re: execve hanging in selinux_bprm_post_apply_creds

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From: Sami Farin <7atbggg02@...>
To: linux-kernel Mailing List <linux-kernel@...>
Subject: execve hanging in selinux_bprm_post_apply_creds
Date: Thursday, January 4, 2007 - 6:26 pm

Kernel 2.6.19.1 SMP on Pentium D.  I ran command restorecon -R /wrk.

After a while or two programs stopped responding and I had to reboot.


I'm not sure is this bug or feature...

I upgraded selinux policy before running restorecon.


2007-01-04 22:41:55.360538500 <4>softlimit     D 61707865     0 18679  18678                     (NOTLB)

2007-01-04 22:41:55.360549500 <4>       ec5efdd0 00000046 f8964fda 61707865 0000006a 00000072 00000043 0000005b

2007-01-04 22:41:55.360551500 <4>       f7264580 000000a9 000000fb 0000000e 000000cc 00000055 c1805700 f4f2e13c

2007-01-04 22:41:55.360553500 <4>       0001be4d 1f64183b 0000073d f4f2e030 c05785ac 00000246 f4f2e030 ec5efe18

2007-01-04 22:41:55.360554500 <4>Call Trace:

2007-01-04 22:41:55.360571500 <4> [<c04b490e>] __mutex_lock_slowpath+0x85/0x1df

2007-01-04 22:41:55.360572500 <4> [<c04b487c>] mutex_lock+0x21/0x24

2007-01-04 22:41:55.360573500 <4> [<c0279dde>] selinux_bprm_post_apply_creds+0x65/0x40a

2007-01-04 22:41:55.360575500 <4> [<c01720cb>] compute_creds+0x4f/0x52

2007-01-04 22:41:55.360576500 <4> [<c019a788>] load_elf_binary+0x944/0xd0e

2007-01-04 22:41:55.360589500 <4> [<c01721f3>] search_binary_handler+0x9a/0x24c

2007-01-04 22:41:55.360590500 <4> [<c0172508>] do_execve+0x163/0x1f1

2007-01-04 22:41:55.360592500 <4> [<c01019fd>] sys_execve+0x32/0x84

2007-01-04 22:41:55.360593500 <4> [<c0102e73>] syscall_call+0x7/0xb

2007-01-04 22:41:55.360594500 <4> [<00ecc410>] 0xecc410

2007-01-04 22:41:55.360620500 <4> =======================


...


2007-01-04 22:41:55.359020500 <4>crond         D DDC59E64     0 18627   1837         18668       (NOTLB)

2007-01-04 22:41:55.359022500 <4>       ddc59e78 00000046 c01454c5 ddc59e64 ddc59e58 c04f4d56 ddc59e74 000000d0

2007-01-04 22:41:55.359033500 <4>       f7a50ac0 f78d8a5e 000006e3 000011f7 00000000 c1967030 c17fd700 d10a6b7c

2007-01...
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[view original message]
From: Andrew Morton <akpm@...>
To: Sami Farin <7atbggg02@...>
Cc: linux-kernel Mailing List <linux-kernel@...>, Stephen Smalley <sds@...>, James Morris <jmorris@...>
Subject: Re: execve hanging in selinux_bprm_post_apply_creds
Date: Thursday, January 4, 2007 - 8:03 pm

On Fri, 5 Jan 2007 00:26:42 +0200


Curious.  It look like running restorecon left tty_mutex held.  I just did

a full tty_mutex audit on 2.6.20-rc3 and all looks to be OK.


Is it repeatable?


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[view original message]
From: Sami Farin <7atbggg02@...>
To: linux-kernel Mailing List <linux-kernel@...>
Cc: Andrew Morton <akpm@...>, Stephen Smalley <sds@...>, James Morris <jmorris@...>
Subject: Re: execve hanging in selinux_bprm_post_apply_creds
Date: Thursday, January 4, 2007 - 9:13 pm

Once in a lifetime.


But... system didn't blow up when I ran

"restorecon -R /wrk" again after reboot.


--

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Previous thread: Re: PROBLEM: sata_sil24 lockups under heavy i/o by Robert Hancock on Thursday, January 4, 2007 - 7:29 pm. (1 message)

Next thread: Re: /usr/include/*/acpi.h by Robert Hancock on Thursday, January 4, 2007 - 7:36 pm. (1 message)