* Boot lockups triggered by 'net: restore the original spinlock to protect unicast list'
@ 2009-08-05 13:36 Mark Brown
2009-08-05 13:40 ` Jiri Pirko
0 siblings, 1 reply; 3+ messages in thread
From: Mark Brown @ 2009-08-05 13:36 UTC (permalink / raw)
To: Jiri Pirko, Meelis Roos, David S. Miller; +Cc: netdev
I'm experiencing lockups at boot in -next with the loopback interface on
my SMDK6410. These appear to be triggered by commit
a6ac65db2329e7685299666f5f7b6093c7b0f3a0 (net: restore the original
spinlock to protect unicast list) - the code change is suspicious and
reverting the change allows my system to boot. I've not yet tried to
understand the failure, I'm just reporting it.
The console trace I get on failure is:
[ 1.830000] BUG: spinlock bad magic on CPU#0, swapper/1
[ 1.830000] lock: c7852508, .magic: 00000000, .owner: <none>/-1, .owner_cpu0
[ 1.840000] [<c002fdc8>] (unwind_backtrace+0x0/0xe0) from [<c01679fc>] (_raw)
[ 1.850000] [<c01679fc>] (_raw_spin_lock+0x20/0x98) from [<c020ac40>] (dev_u)
[ 1.860000] [<c020ac40>] (dev_unicast_init+0x18/0x3c) from [<c020ebf8>] (all)
[ 1.860000] [<c020ebf8>] (alloc_netdev_mq+0xbc/0x13c) from [<c001b210>] (loo)
[ 1.870000] [<c001b210>] (loopback_net_init+0x1c/0x70) from [<c02096e4>] (re)
[ 1.880000] [<c02096e4>] (register_pernet_operations+0x20/0x2c) from [<c0209)
[ 1.890000] [<c0209778>] (register_pernet_device+0x20/0x54) from [<c001cbbc>)
[ 1.900000] [<c001cbbc>] (net_dev_init+0xd0/0x15c) from [<c0029274>] (do_one)
[ 1.910000] [<c0029274>] (do_one_initcall+0x4c/0x174) from [<c0008640>] (do_)
[ 1.920000] [<c0008640>] (do_initcalls+0x1c/0x38) from [<c0008a04>] (kernel_)
[ 1.930000] [<c0008a04>] (kernel_init+0x3c/0x8c) from [<c002ac98>] (kernel_t)
[ 9.930000] BUG: spinlock lockup on CPU#0, swapper/1, c7852508
[ 9.930000] [<c002fdc8>] (unwind_backtrace+0x0/0xe0) from [<c01679c8>] (__sp)
[ 9.940000] [<c01679c8>] (__spin_lock_debug+0x88/0x9c) from [<c0167a54>] (_r)
[ 9.940000] [<c0167a54>] (_raw_spin_lock+0x78/0x98) from [<c020ac40>] (dev_u)
[ 9.950000] [<c020ac40>] (dev_unicast_init+0x18/0x3c) from [<c020ebf8>] (all)
[ 9.960000] [<c020ebf8>] (alloc_netdev_mq+0xbc/0x13c) from [<c001b210>] (loo)
[ 9.970000] [<c001b210>] (loopback_net_init+0x1c/0x70) from [<c02096e4>] (re)
[ 9.980000] [<c02096e4>] (register_pernet_operations+0x20/0x2c) from [<c0209)
[ 9.990000] [<c0209778>] (register_pernet_device+0x20/0x54) from [<c001cbbc>)
[ 10.000000] [<c001cbbc>] (net_dev_init+0xd0/0x15c) from [<c0029274>] (do_one)
[ 10.010000] [<c0029274>] (do_one_initcall+0x4c/0x174) from [<c0008640>] (do_)
[ 10.020000] [<c0008640>] (do_initcalls+0x1c/0x38) from [<c0008a04>] (kernel_)
[ 10.030000] [<c0008a04>] (kernel_init+0x3c/0x8c) from [<c002ac98>] (kernel_t)
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Boot lockups triggered by 'net: restore the original spinlock to protect unicast list'
2009-08-05 13:36 Boot lockups triggered by 'net: restore the original spinlock to protect unicast list' Mark Brown
@ 2009-08-05 13:40 ` Jiri Pirko
2009-08-05 13:49 ` Mark Brown
0 siblings, 1 reply; 3+ messages in thread
From: Jiri Pirko @ 2009-08-05 13:40 UTC (permalink / raw)
To: Mark Brown; +Cc: Meelis Roos, David S. Miller, netdev
Wed, Aug 05, 2009 at 03:36:59PM CEST, broonie@opensource.wolfsonmicro.com wrote:
>I'm experiencing lockups at boot in -next with the loopback interface on
>my SMDK6410. These appear to be triggered by commit
>a6ac65db2329e7685299666f5f7b6093c7b0f3a0 (net: restore the original
>spinlock to protect unicast list) - the code change is suspicious and
>reverting the change allows my system to boot. I've not yet tried to
>understand the failure, I'm just reporting it.
Try this patch
http://marc.info/?l=linux-kernel&m=124945666109347&w=2
That should fix this.
>
>The console trace I get on failure is:
>
>[ 1.830000] BUG: spinlock bad magic on CPU#0, swapper/1
>[ 1.830000] lock: c7852508, .magic: 00000000, .owner: <none>/-1, .owner_cpu0
>[ 1.840000] [<c002fdc8>] (unwind_backtrace+0x0/0xe0) from [<c01679fc>] (_raw)
>[ 1.850000] [<c01679fc>] (_raw_spin_lock+0x20/0x98) from [<c020ac40>] (dev_u)
>[ 1.860000] [<c020ac40>] (dev_unicast_init+0x18/0x3c) from [<c020ebf8>] (all)
>[ 1.860000] [<c020ebf8>] (alloc_netdev_mq+0xbc/0x13c) from [<c001b210>] (loo)
>[ 1.870000] [<c001b210>] (loopback_net_init+0x1c/0x70) from [<c02096e4>] (re)
>[ 1.880000] [<c02096e4>] (register_pernet_operations+0x20/0x2c) from [<c0209)
>[ 1.890000] [<c0209778>] (register_pernet_device+0x20/0x54) from [<c001cbbc>)
>[ 1.900000] [<c001cbbc>] (net_dev_init+0xd0/0x15c) from [<c0029274>] (do_one)
>[ 1.910000] [<c0029274>] (do_one_initcall+0x4c/0x174) from [<c0008640>] (do_)
>[ 1.920000] [<c0008640>] (do_initcalls+0x1c/0x38) from [<c0008a04>] (kernel_)
>[ 1.930000] [<c0008a04>] (kernel_init+0x3c/0x8c) from [<c002ac98>] (kernel_t)
>[ 9.930000] BUG: spinlock lockup on CPU#0, swapper/1, c7852508
>[ 9.930000] [<c002fdc8>] (unwind_backtrace+0x0/0xe0) from [<c01679c8>] (__sp)
>[ 9.940000] [<c01679c8>] (__spin_lock_debug+0x88/0x9c) from [<c0167a54>] (_r)
>[ 9.940000] [<c0167a54>] (_raw_spin_lock+0x78/0x98) from [<c020ac40>] (dev_u)
>[ 9.950000] [<c020ac40>] (dev_unicast_init+0x18/0x3c) from [<c020ebf8>] (all)
>[ 9.960000] [<c020ebf8>] (alloc_netdev_mq+0xbc/0x13c) from [<c001b210>] (loo)
>[ 9.970000] [<c001b210>] (loopback_net_init+0x1c/0x70) from [<c02096e4>] (re)
>[ 9.980000] [<c02096e4>] (register_pernet_operations+0x20/0x2c) from [<c0209)
>[ 9.990000] [<c0209778>] (register_pernet_device+0x20/0x54) from [<c001cbbc>)
>[ 10.000000] [<c001cbbc>] (net_dev_init+0xd0/0x15c) from [<c0029274>] (do_one)
>[ 10.010000] [<c0029274>] (do_one_initcall+0x4c/0x174) from [<c0008640>] (do_)
>[ 10.020000] [<c0008640>] (do_initcalls+0x1c/0x38) from [<c0008a04>] (kernel_)
>[ 10.030000] [<c0008a04>] (kernel_init+0x3c/0x8c) from [<c002ac98>] (kernel_t)
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Boot lockups triggered by 'net: restore the original spinlock to protect unicast list'
2009-08-05 13:40 ` Jiri Pirko
@ 2009-08-05 13:49 ` Mark Brown
0 siblings, 0 replies; 3+ messages in thread
From: Mark Brown @ 2009-08-05 13:49 UTC (permalink / raw)
To: Jiri Pirko; +Cc: Meelis Roos, David S. Miller, netdev
On Wed, Aug 05, 2009 at 03:40:05PM +0200, Jiri Pirko wrote:
> Try this patch
> http://marc.info/?l=linux-kernel&m=124945666109347&w=2
> That should fix this.
It does indeed, thanks. FWIW
Tested-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2009-08-05 13:36 Boot lockups triggered by 'net: restore the original spinlock to protect unicast list' Mark Brown
2009-08-05 13:40 ` Jiri Pirko
2009-08-05 13:49 ` Mark Brown
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