>
http://bugzilla.kernel.org/show_bug.cgi?id=12960
>
> Summary: BUG using smp_processor_id() in preemptible [00000000]
> code: rndc/4018
> Product: Process Management
> Version: 2.5
> Kernel Version: 2.6.29-git[23]
> Platform: All
> OS/Version: Linux
> Tree: Mainline
> Status: NEW
> Severity: normal
> Priority: P1
> Component: Preemption
> AssignedTo:
rlove@rlove.org
> ReportedBy:
jean.luc.coulon@gmail.com
> Regression: Yes
>
>
> Created an attachment (id=20717)
> --> (
http://bugzilla.kernel.org/attachment.cgi?id=20717)
> .config file
>
> Hi,
>
> Since 2.6.29-git2, I've many BUG messages.
> I have not them with 2.6.29 vanilla and I've not tested git1
>
> BUG: using smp_processor_id() in preemptible [00000000] code: rndc/4018
> Mar 28 09:56:52 tangerine kernel: caller is ipt_do_table+0xfe/0x5a4 [ip_tables]
> Mar 28 09:56:52 tangerine kernel: Pid: 4018, comm: rndc Not tainted
> 2.6.29-git2-k8-1 #1
> Mar 28 09:56:52 tangerine kernel: Call Trace:
> Mar 28 09:56:52 tangerine kernel: [<ffffffff8034f0c0>]
> debug_smp_processor_id+0xe0/0xf0
> Mar 28 09:56:52 tangerine kernel: [<ffffffffa0493cee>] ipt_do_table+0xfe/0x5a4
> [ip_tables]
> Mar 28 09:56:52 tangerine kernel: [<ffffffffa049e8a8>] ?
> __nf_ct_ext_add+0x68/0x220 [nf_conntrack]
> Mar 28 09:56:52 tangerine kernel: [<ffffffffa0307109>] ipt_local_hook+0x89/0xec
> [iptable_mangle]
> Mar 28 09:56:52 tangerine kernel: [<ffffffff80428a17>] nf_iterate+0x67/0xa0
> Mar 28 09:56:52 tangerine kernel: [<ffffffff80432e30>] ? dst_output+0x0/0x10
> Mar 28 09:56:52 tangerine kernel: [<ffffffff80428b05>] nf_hook_slow+0xb5/0x100
> Mar 28 09:56:52 tangerine kernel: [<ffffffff80432e30>] ? dst_output+0x0/0x10
> Mar 28 09:56:52 tangerine kernel: [<ffffffff80434c0f>] __ip_local_out+0x9f/0xb0
> Mar 28 09:56:52 tangerine kernel: [<ffffffff80434c31>] ip_local_out+0x11/0x30
> Mar 28 09:56:52 tangerine kernel: [<ffffffff80435524>]
> ip_queue_xmit+0x214/0x410
> Mar 28 09:56:52 tangerine kernel: [<ffffffff802a8ec4>] ?
> __slab_alloc+0x154/0x730
> Mar 28 09:56:52 tangerine kernel: [<ffffffff80409f04>] ? __alloc_skb+0x44/0x160
> Mar 28 09:56:52 tangerine kernel: [<ffffffff804495f5>]
> tcp_transmit_skb+0x505/0x7c0
> Mar 28 09:56:52 tangerine kernel: [<ffffffff8044a176>] tcp_connect+0x3c6/0x4a0
> Mar 28 09:56:52 tangerine kernel: [<ffffffff804507e3>]
> tcp_v4_connect+0x423/0x510
> Mar 28 09:56:52 tangerine kernel: [<ffffffff8045dd07>]
> inet_stream_connect+0x217/0x2b0
> Mar 28 09:56:52 tangerine kernel: [<ffffffff802ae4fe>] ? fget_light+0xce/0xe0
> Mar 28 09:56:52 tangerine kernel: [<ffffffff804008f0>] sys_connect+0xb0/0xd0
> Mar 28 09:56:52 tangerine kernel: [<ffffffff8026841e>] ? sys_futex+0xbe/0x170
> Mar 28 09:56:52 tangerine kernel: [<ffffffff80495842>] ?
> _spin_lock_irqsave+0x22/0x50
> Mar 28 09:56:52 tangerine kernel: [<ffffffff80495ab2>] ?
> _spin_unlock_irqrestore+0x12/0x40
> Mar 28 09:56:52 tangerine kernel: [<ffffffff8020bb1b>]
> system_call_fastpath+0x16/0x1b
>
>
> It occurs with various processes but the first two lines are always the same:
>
> [<ffffffff8034f030>] debug_smp_processor_id+0xe0/0xf0
> Mar 28 16:32:25 tangerine kernel: [<ffffffffa049ad0e>] ipt_do_table+0xfe/0x5a4
> [ip_tables]
>
> I've reported it on preemtion because of the header line of the trace but maybe
> it is related to iptables.
>
> Attached: my .config.
>
> System is: Debian sid
> Architecture: X86_64 on an amd64 x2 4200+
>
