* [REPORT] BUG: spinlock recursion on CPU#0, init/1
@ 2011-01-10 15:21 Santosh Shilimkar
2011-01-10 15:33 ` Peter Zijlstra
2011-01-18 16:19 ` Maciej Rutecki
0 siblings, 2 replies; 4+ messages in thread
From: Santosh Shilimkar @ 2011-01-10 15:21 UTC (permalink / raw)
To: linux-kernel
On latest mainline commit I seeing a regression when rootfs
is mounted on NFS. Not sure if it's already known regression.
Anybody is aware of this one ?
--------------------------------------
Uncompressing Linux... done, booting the kernel.
Linux version 2.6.37-03766-g0390214 (a0393909@a0393909-desktop) (gcc
version 4.4.1 (Sourcery G++ Lite 2010q1-202) ) #44 SMP Mon Jan 10 20:41:27
IST 2011
[....]
VFS: Mounted root (nfs filesystem) on device 0:13.
Freeing init memory: 296K
BUG: spinlock recursion on CPU#0, init/1
lock: ef5a1e0c, .magic: dead4ead, .owner: init/1, .owner_cpu: 0
[<c0063290>] (unwind_backtrace+0x0/0xe4) from [<c024ce90>]
(do_raw_spin_lock+0x48/0x158)
[<c024ce90>] (do_raw_spin_lock+0x48/0x158) from [<c012f4e0>]
(nameidata_dentry_drop_rcu+0x84/0x17c)
[<c012f4e0>] (nameidata_dentry_drop_rcu+0x84/0x17c) from [<c012f608>]
(d_revalidate+0x30/0x58)
[<c012f608>] (d_revalidate+0x30/0x58) from [<c0132120>]
(link_path_walk+0xb44/0xb64)
[<c0132120>] (link_path_walk+0xb44/0xb64) from [<c0132338>]
(do_path_lookup+0x44/0xcc)
[<c0132338>] (do_path_lookup+0x44/0xcc) from [<c0132f08>]
(do_filp_open+0xc8/0x56c)
[<c0132f08>] (do_filp_open+0xc8/0x56c) from [<c0124828>]
(do_sys_open+0x58/0xe4)
[<c0124828>] (do_sys_open+0x58/0xe4) from [<c005c240>]
(ret_fast_syscall+0x0/0x3c)
BUG: spinlock lockup on CPU#0, init/1, ef5a1e0c
[<c0063290>] (unwind_backtrace+0x0/0xe4) from [<c024cf84>]
(do_raw_spin_lock+0x13c/0x158)
[<c024cf84>] (do_raw_spin_lock+0x13c/0x158) from [<c012f4e0>]
(nameidata_dentry_drop_rcu+0x84/0x17c)
[<c012f4e0>] (nameidata_dentry_drop_rcu+0x84/0x17c) from [<c012f608>]
(d_revalidate+0x30/0x58)
[<c012f608>] (d_revalidate+0x30/0x58) from [<c0132120>]
(link_path_walk+0xb44/0xb64)
[<c0132120>] (link_path_walk+0xb44/0xb64) from [<c0132338>]
(do_path_lookup+0x44/0xcc)
[<c0132338>] (do_path_lookup+0x44/0xcc) from [<c0132f08>]
(do_filp_open+0xc8/0x56c)
[<c0132f08>] (do_filp_open+0xc8/0x56c) from [<c0124828>]
(do_sys_open+0x58/0xe4)
[<c0124828>] (do_sys_open+0x58/0xe4) from [<c005c240>]
(ret_fast_syscall+0x0/0x3c)
BUG: spinlock lockup on CPU#1, kworker/u:2/499, c05d3c80
[<c0063290>] (unwind_backtrace+0x0/0xe4) from [<c024cf84>]
(do_raw_spin_lock+0x13c/0x158)
[<c024cf84>] (do_raw_spin_lock+0x13c/0x158) from [<c014afac>]
(exit_fs+0x2c/0x84)
[<c014afac>] (exit_fs+0x2c/0x84) from [<c0098274>] (do_exit+0x254/0x674)
[<c0098274>] (do_exit+0x254/0x674) from [<c00b0944>] (kthread+0x88/0x8c)
[<c00b0944>] (kthread+0x88/0x8c) from [<c005d490>]
(kernel_thread_exit+0x0/0x8)
--------------------------------------
Regards,
Santosh
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [REPORT] BUG: spinlock recursion on CPU#0, init/1
2011-01-10 15:21 [REPORT] BUG: spinlock recursion on CPU#0, init/1 Santosh Shilimkar
@ 2011-01-10 15:33 ` Peter Zijlstra
2011-01-18 16:19 ` Maciej Rutecki
1 sibling, 0 replies; 4+ messages in thread
From: Peter Zijlstra @ 2011-01-10 15:33 UTC (permalink / raw)
To: Santosh Shilimkar; +Cc: linux-kernel, Nick Piggin, Trond Myklebust
On Mon, 2011-01-10 at 20:51 +0530, Santosh Shilimkar wrote:
> On latest mainline commit I seeing a regression when rootfs
> is mounted on NFS. Not sure if it's already known regression.
>
> Anybody is aware of this one ?
>
> --------------------------------------
> Uncompressing Linux... done, booting the kernel.
> Linux version 2.6.37-03766-g0390214 (a0393909@a0393909-desktop) (gcc
> version 4.4.1 (Sourcery G++ Lite 2010q1-202) ) #44 SMP Mon Jan 10 20:41:27
> IST 2011
>
> [....]
>
> VFS: Mounted root (nfs filesystem) on device 0:13.
> Freeing init memory: 296K
> BUG: spinlock recursion on CPU#0, init/1
> lock: ef5a1e0c, .magic: dead4ead, .owner: init/1, .owner_cpu: 0
> [<c0063290>] (unwind_backtrace+0x0/0xe4) from [<c024ce90>]
> (do_raw_spin_lock+0x48/0x158)
> [<c024ce90>] (do_raw_spin_lock+0x48/0x158) from [<c012f4e0>]
> (nameidata_dentry_drop_rcu+0x84/0x17c)
> [<c012f4e0>] (nameidata_dentry_drop_rcu+0x84/0x17c) from [<c012f608>]
> (d_revalidate+0x30/0x58)
> [<c012f608>] (d_revalidate+0x30/0x58) from [<c0132120>]
> (link_path_walk+0xb44/0xb64)
> [<c0132120>] (link_path_walk+0xb44/0xb64) from [<c0132338>]
> (do_path_lookup+0x44/0xcc)
> [<c0132338>] (do_path_lookup+0x44/0xcc) from [<c0132f08>]
> (do_filp_open+0xc8/0x56c)
> [<c0132f08>] (do_filp_open+0xc8/0x56c) from [<c0124828>]
> (do_sys_open+0x58/0xe4)
> [<c0124828>] (do_sys_open+0x58/0xe4) from [<c005c240>]
> (ret_fast_syscall+0x0/0x3c)
> BUG: spinlock lockup on CPU#0, init/1, ef5a1e0c
> [<c0063290>] (unwind_backtrace+0x0/0xe4) from [<c024cf84>]
> (do_raw_spin_lock+0x13c/0x158)
> [<c024cf84>] (do_raw_spin_lock+0x13c/0x158) from [<c012f4e0>]
> (nameidata_dentry_drop_rcu+0x84/0x17c)
> [<c012f4e0>] (nameidata_dentry_drop_rcu+0x84/0x17c) from [<c012f608>]
> (d_revalidate+0x30/0x58)
> [<c012f608>] (d_revalidate+0x30/0x58) from [<c0132120>]
> (link_path_walk+0xb44/0xb64)
> [<c0132120>] (link_path_walk+0xb44/0xb64) from [<c0132338>]
> (do_path_lookup+0x44/0xcc)
> [<c0132338>] (do_path_lookup+0x44/0xcc) from [<c0132f08>]
> (do_filp_open+0xc8/0x56c)
> [<c0132f08>] (do_filp_open+0xc8/0x56c) from [<c0124828>]
> (do_sys_open+0x58/0xe4)
> [<c0124828>] (do_sys_open+0x58/0xe4) from [<c005c240>]
> (ret_fast_syscall+0x0/0x3c)
> BUG: spinlock lockup on CPU#1, kworker/u:2/499, c05d3c80
> [<c0063290>] (unwind_backtrace+0x0/0xe4) from [<c024cf84>]
> (do_raw_spin_lock+0x13c/0x158)
> [<c024cf84>] (do_raw_spin_lock+0x13c/0x158) from [<c014afac>]
> (exit_fs+0x2c/0x84)
> [<c014afac>] (exit_fs+0x2c/0x84) from [<c0098274>] (do_exit+0x254/0x674)
> [<c0098274>] (do_exit+0x254/0x674) from [<c00b0944>] (kthread+0x88/0x8c)
> [<c00b0944>] (kthread+0x88/0x8c) from [<c005d490>]
> (kernel_thread_exit+0x0/0x8)
Smells like the stuff Nick touched.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [REPORT] BUG: spinlock recursion on CPU#0, init/1
2011-01-10 15:21 [REPORT] BUG: spinlock recursion on CPU#0, init/1 Santosh Shilimkar
2011-01-10 15:33 ` Peter Zijlstra
@ 2011-01-18 16:19 ` Maciej Rutecki
2011-01-19 23:58 ` Nick Piggin
1 sibling, 1 reply; 4+ messages in thread
From: Maciej Rutecki @ 2011-01-18 16:19 UTC (permalink / raw)
To: Santosh Shilimkar; +Cc: linux-kernel
I created a Bugzilla entry at
https://bugzilla.kernel.org/show_bug.cgi?id=27022
for your bug report, please add your address to the CC list in there, thanks!
On poniedziałek, 10 stycznia 2011 o 16:21:59 Santosh Shilimkar wrote:
> On latest mainline commit I seeing a regression when rootfs
> is mounted on NFS. Not sure if it's already known regression.
>
> Anybody is aware of this one ?
>
> --------------------------------------
> Uncompressing Linux... done, booting the kernel.
> Linux version 2.6.37-03766-g0390214 (a0393909@a0393909-desktop) (gcc
> version 4.4.1 (Sourcery G++ Lite 2010q1-202) ) #44 SMP Mon Jan 10 20:41:27
> IST 2011
>
> [....]
>
> VFS: Mounted root (nfs filesystem) on device 0:13.
> Freeing init memory: 296K
> BUG: spinlock recursion on CPU#0, init/1
> lock: ef5a1e0c, .magic: dead4ead, .owner: init/1, .owner_cpu: 0
> [<c0063290>] (unwind_backtrace+0x0/0xe4) from [<c024ce90>]
> (do_raw_spin_lock+0x48/0x158)
> [<c024ce90>] (do_raw_spin_lock+0x48/0x158) from [<c012f4e0>]
> (nameidata_dentry_drop_rcu+0x84/0x17c)
> [<c012f4e0>] (nameidata_dentry_drop_rcu+0x84/0x17c) from [<c012f608>]
> (d_revalidate+0x30/0x58)
> [<c012f608>] (d_revalidate+0x30/0x58) from [<c0132120>]
> (link_path_walk+0xb44/0xb64)
> [<c0132120>] (link_path_walk+0xb44/0xb64) from [<c0132338>]
> (do_path_lookup+0x44/0xcc)
> [<c0132338>] (do_path_lookup+0x44/0xcc) from [<c0132f08>]
> (do_filp_open+0xc8/0x56c)
> [<c0132f08>] (do_filp_open+0xc8/0x56c) from [<c0124828>]
> (do_sys_open+0x58/0xe4)
> [<c0124828>] (do_sys_open+0x58/0xe4) from [<c005c240>]
> (ret_fast_syscall+0x0/0x3c)
> BUG: spinlock lockup on CPU#0, init/1, ef5a1e0c
> [<c0063290>] (unwind_backtrace+0x0/0xe4) from [<c024cf84>]
> (do_raw_spin_lock+0x13c/0x158)
> [<c024cf84>] (do_raw_spin_lock+0x13c/0x158) from [<c012f4e0>]
> (nameidata_dentry_drop_rcu+0x84/0x17c)
> [<c012f4e0>] (nameidata_dentry_drop_rcu+0x84/0x17c) from [<c012f608>]
> (d_revalidate+0x30/0x58)
> [<c012f608>] (d_revalidate+0x30/0x58) from [<c0132120>]
> (link_path_walk+0xb44/0xb64)
> [<c0132120>] (link_path_walk+0xb44/0xb64) from [<c0132338>]
> (do_path_lookup+0x44/0xcc)
> [<c0132338>] (do_path_lookup+0x44/0xcc) from [<c0132f08>]
> (do_filp_open+0xc8/0x56c)
> [<c0132f08>] (do_filp_open+0xc8/0x56c) from [<c0124828>]
> (do_sys_open+0x58/0xe4)
> [<c0124828>] (do_sys_open+0x58/0xe4) from [<c005c240>]
> (ret_fast_syscall+0x0/0x3c)
> BUG: spinlock lockup on CPU#1, kworker/u:2/499, c05d3c80
> [<c0063290>] (unwind_backtrace+0x0/0xe4) from [<c024cf84>]
> (do_raw_spin_lock+0x13c/0x158)
> [<c024cf84>] (do_raw_spin_lock+0x13c/0x158) from [<c014afac>]
> (exit_fs+0x2c/0x84)
> [<c014afac>] (exit_fs+0x2c/0x84) from [<c0098274>] (do_exit+0x254/0x674)
> [<c0098274>] (do_exit+0x254/0x674) from [<c00b0944>] (kthread+0x88/0x8c)
> [<c00b0944>] (kthread+0x88/0x8c) from [<c005d490>]
> (kernel_thread_exit+0x0/0x8)
>
> --------------------------------------
>
> Regards,
> Santosh
> --
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--
Maciej Rutecki
http://www.maciek.unixy.pl
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [REPORT] BUG: spinlock recursion on CPU#0, init/1
2011-01-18 16:19 ` Maciej Rutecki
@ 2011-01-19 23:58 ` Nick Piggin
0 siblings, 0 replies; 4+ messages in thread
From: Nick Piggin @ 2011-01-19 23:58 UTC (permalink / raw)
To: maciej.rutecki; +Cc: Santosh Shilimkar, linux-kernel
Yeah this should be fixed as of about a week ago, sorry for
not replying earlier.
Thanks for reporting and please let us know if you have any
further problems.
On Wed, Jan 19, 2011 at 3:19 AM, Maciej Rutecki
<maciej.rutecki@gmail.com> wrote:
> I created a Bugzilla entry at
> https://bugzilla.kernel.org/show_bug.cgi?id=27022
> for your bug report, please add your address to the CC list in there, thanks!
>
> On poniedziałek, 10 stycznia 2011 o 16:21:59 Santosh Shilimkar wrote:
>> On latest mainline commit I seeing a regression when rootfs
>> is mounted on NFS. Not sure if it's already known regression.
>>
>> Anybody is aware of this one ?
>>
>> --------------------------------------
>> Uncompressing Linux... done, booting the kernel.
>> Linux version 2.6.37-03766-g0390214 (a0393909@a0393909-desktop) (gcc
>> version 4.4.1 (Sourcery G++ Lite 2010q1-202) ) #44 SMP Mon Jan 10 20:41:27
>> IST 2011
>>
>> [....]
>>
>> VFS: Mounted root (nfs filesystem) on device 0:13.
>> Freeing init memory: 296K
>> BUG: spinlock recursion on CPU#0, init/1
>> lock: ef5a1e0c, .magic: dead4ead, .owner: init/1, .owner_cpu: 0
>> [<c0063290>] (unwind_backtrace+0x0/0xe4) from [<c024ce90>]
>> (do_raw_spin_lock+0x48/0x158)
>> [<c024ce90>] (do_raw_spin_lock+0x48/0x158) from [<c012f4e0>]
>> (nameidata_dentry_drop_rcu+0x84/0x17c)
>> [<c012f4e0>] (nameidata_dentry_drop_rcu+0x84/0x17c) from [<c012f608>]
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2011-01-19 23:58 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2011-01-10 15:21 [REPORT] BUG: spinlock recursion on CPU#0, init/1 Santosh Shilimkar
2011-01-10 15:33 ` Peter Zijlstra
2011-01-18 16:19 ` Maciej Rutecki
2011-01-19 23:58 ` Nick Piggin
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