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SubjectRe: 2.6.23-rc7-mm1
Hi Andrew,

Kernel BUG over x86_64 (AMD Opteron(tm) Processor 844).

Similar kernel Bug was reported for 2.6.23-rc2-mm1
at http://lkml.org/lkml/2007/8/10/20 and the
mm-dirty-balancing-for-tasks.patch was dropped from 2.6.23-rc2-mm2.
And the same patch is in this -mm version, suspect whether is it the
same patch triggering this Bug.

BUG: soft lockup - CPU#0 stuck for 11s! [events/0:15]
CPU 0:
Modules linked in:
Pid: 15, comm: events/0 Tainted: G D 2.6.23-rc7-mm1-autokern1 #1
RIP: 0010:[<ffffffff8021be46>] [<ffffffff8021be46>] __smp_call_function_mask+0x9a/0xc4
RSP: 0000:ffff8100017add80 EFLAGS: 00000297
RAX: 00000000000000fc RBX: ffff8100017adde0 RCX: 0000000000000001
RDX: 00000000000008fc RSI: 00000000000000fc RDI: 000000000000000e
RBP: ffffc20002d11000 R08: ffff8100017ac000 R09: ffffffff80675e38
R10: 0000000000000000 R11: 0000000000000000 R12: 000000000000000f
R13: ffffffff8021bcfe R14: 0000000000000000 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffffffff8065a000(0000) knlGS:00000000556aa2a0
CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: ffffc20002d11008 CR3: 0000000000201000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
Inexact backtrace:
[<ffffffff802157a4>] mcheck_check_cpu+0x0/0x31
[<ffffffff802157a4>] mcheck_check_cpu+0x0/0x31
[<ffffffff8021becf>] smp_call_function_mask+0x5f/0x72
[<ffffffff802157a4>] mcheck_check_cpu+0x0/0x31
[<ffffffff8021bf82>] smp_call_function+0x19/0x1b
[<ffffffff8023a773>] on_each_cpu+0x16/0x2b
[<ffffffff802158a2>] mcheck_timer+0x0/0x7c
[<ffffffff802158c0>] mcheck_timer+0x1e/0x7c
[<ffffffff802444b9>] run_workqueue+0x88/0x109
[<ffffffff8024453a>] worker_thread+0x0/0xf4
[<ffffffff80244623>] worker_thread+0xe9/0xf4
[<ffffffff8024841d>] autoremove_wake_function+0x0/0x37
[<ffffffff8024841d>] autoremove_wake_function+0x0/0x37
[<ffffffff80247e5c>] kthread+0x44/0x6d
[<ffffffff8020c5a8>] child_rip+0xa/0x12
[<ffffffff80247e18>] kthread+0x0/0x6d
[<ffffffff8020c59e>] child_rip+0x0/0x12
--
Thanks & Regards,
Kamalesh Babulal,
Linux Technology Center,
IBM, ISTL.
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