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Date: Thu, 02 Feb 2012 21:37:37 +0100
From: Eric Dumazet <eric.dumazet@...il.com>
To: Ian Campbell <Ian.Campbell@...rix.com>
Cc: "Wei Liu (Intern)" <wei.liu2@...rix.com>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
"konrad.wilk@...cle.com" <konrad.wilk@...cle.com>
Subject: Re: [RFC PATCH V4 02/13] netback: add module unload function.
Le jeudi 02 février 2012 à 21:34 +0100, Eric Dumazet a écrit :
> That sounds a right fix.
>
> Why do think its not reasonable that I ask a bug fix ?
>
> Next time, dont bother send patches for review if you dont want
> reviewers.
FYI, here the trace you can get right now with this bug :
[ 1180.114682] WARNING: at arch/x86/kernel/smp.c:120 native_smp_send_reschedule+0x5b/0x60()
[ 1180.114685] Hardware name: ProLiant BL460c G6
[ 1180.114686] Modules linked in: ipmi_devintf nfsd exportfs ipmi_si hpilo bnx2x crc32c libcrc32c mdio [last unloaded: scsi_wait_scan]
[ 1180.114697] Pid: 7, comm: migration/1 Not tainted 3.3.0-rc2+ #609
[ 1180.114699] Call Trace:
[ 1180.114701] <IRQ> [<ffffffff81037adf>] warn_slowpath_common+0x7f/0xc0
[ 1180.114708] [<ffffffff81037b3a>] warn_slowpath_null+0x1a/0x20
[ 1180.114711] [<ffffffff8101ecfb>] native_smp_send_reschedule+0x5b/0x60
[ 1180.114715] [<ffffffff810744ec>] trigger_load_balance+0x28c/0x370
[ 1180.114720] [<ffffffff8106be14>] scheduler_tick+0x114/0x160
[ 1180.114724] [<ffffffff8104956e>] update_process_times+0x6e/0x90
[ 1180.114729] [<ffffffff8108c614>] tick_sched_timer+0x64/0xc0
[ 1180.114733] [<ffffffff8105fe54>] __run_hrtimer+0x84/0x1f0
[ 1180.114736] [<ffffffff8108c5b0>] ? tick_nohz_handler+0xf0/0xf0
[ 1180.114739] [<ffffffff8103f271>] ? __do_softirq+0x101/0x240
[ 1180.114742] [<ffffffff81060783>] hrtimer_interrupt+0xf3/0x220
[ 1180.114747] [<ffffffff810a90b0>] ? queue_stop_cpus_work+0x100/0x100
[ 1180.114751] [<ffffffff8171ee09>] smp_apic_timer_interrupt+0x69/0x99
[ 1180.114754] [<ffffffff8171dd4b>] apic_timer_interrupt+0x6b/0x70
[ 1180.114756] <EOI> [<ffffffff810a9143>] ? stop_machine_cpu_stop+0x93/0xc0
[ 1180.114761] [<ffffffff810a8da7>] cpu_stopper_thread+0xd7/0x1a0
[ 1180.114766] [<ffffffff81713dc7>] ? __schedule+0x3a7/0x7e0
[ 1180.114768] [<ffffffff81064058>] ? __wake_up_common+0x58/0x90
[ 1180.114771] [<ffffffff810a8cd0>] ? cpu_stop_signal_done+0x40/0x40
[ 1180.114773] [<ffffffff8105b5c3>] kthread+0x93/0xa0
[ 1180.114776] [<ffffffff8171e594>] kernel_thread_helper+0x4/0x10
[ 1180.114779] [<ffffffff8105b530>] ? kthread_freezable_should_stop+0x80/0x80
[ 1180.114781] [<ffffffff8171e590>] ? gs_change+0xb/0xb
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