On Tuesday, 20 February 2007 01:04, Rafael J. Wysocki wrote: > On Monday, 19 February 2007 12:45, Michal Piotrowski wrote: > > On 19/02/07, Rafael J. Wysocki <rjw@xxxxxxx> wrote: > > > On Monday, 19 February 2007 01:00, Andrew Morton wrote: > > > > On Mon, 19 Feb 2007 00:25:48 +0100 "Rafael J. Wysocki" <rjw@xxxxxxx> wrote: > > > > > > > > > > netconsole is good. > > > > > > > > > > I know. :-) > > > > > > > > > > In the meantime, I've got something worse on another x86_64 box: > > > > > > > > > > Asus Laptop ACPI Extras version 0.30 > > > > > L5D model detected, supported > > > > > audit(1171831698.918:2): audit_pid=4281 old=0 by auid=4294967295 > > > > > general protection fault: 0000 [2] PREEMPT > > > > > last sysfs file: /class/net/eth2/carrier > > > > > CPU 0 > > > > > Modules linked in: af_packet ipv6 snd_pcm_oss snd_mixer_oss snd_seq snd_seq_device asus_acpi backlight button battery ac dm_mod pcmr > > > > > Pid: 178, comm: pdflush Not tainted 2.6.20-mm2 #1 > > > > > RIP: 0010:[<ffffffff8034bce4>] [<ffffffff8034bce4>] __make_request+0x134/0x370 > > > > > RSP: 0000:ffff81005ed659a0 EFLAGS: 00010297 > > > > > RAX: 00000000ffffffff RBX: 6b6b6b6b6b6b6b6b RCX: 000000000203396a > > > > > RDX: 0000000100000000 RSI: ffff810037b4dbb0 RDI: ffff81004683d8c0 > > > > > RBP: ffff81005ed659f0 R08: ffff81004683d070 R09: ffff81003d333cc0 > > > > > R10: 0000000000000000 R11: 0000000000000000 R12: ffff810037b4dbb0 > > > > > R13: ffff81005daba3f0 R14: ffff810037daca90 R15: ffff81005daba3d0 > > > > > FS: 00002ad4a29e6d00(0000) GS:ffffffff805db000(0000) knlGS:0000000000000000 > > > > > CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b > > > > > CR2: 00002b6a345aa000 CR3: 0000000056585000 CR4: 00000000000006e0 > > > > > Process pdflush (pid: 178, threadinfo ffff81005ed64000, task ffff810037b060c0) > > > > > Stack: ffff810002852540 0000000000000001 ffff810037b4dbb0 ffffffff8026be21 > > > > > ffff81005ed65a40 0000000000000008 ffff810037b4dbb0 0000000000000800 > > > > > 0000000000000008 ffff8100021d94e0 ffff81005ed65a40 ffffffff80348e7c > > > > > Call Trace: > > > > > [<ffffffff8026be21>] mempool_alloc_slab+0x11/0x20 > > > > > [<ffffffff80348e7c>] generic_make_request+0x1ec/0x230 > > > > > > > > yeah. everyone except me is hitting that. > > > > > > FWIW, I don't see it on an SMP machine. > > > > > > > I can reproduce this on my SMT P4. > > > > CONFIG_SMP=y > > CONFIG_X86_PC=y > > CONFIG_MPENTIUM4=y > > CONFIG_NR_CPUS=2 > > CONFIG_SCHED_SMT=y > > It may be related to preemption. The box I'm not seeing it on runs a > non-preemptible kernel (CONFIG_PREEMPT_VOLUNTARY is set). FWIW, with CONFIG_PREEMPT unset (CONFIG_PREEMPT_VOLUNTARY is set instead), I'm unable to reproduce this problem on the box on which it is readily reproducible with CONFIG_PREEMPT set. Greetings, Rafael - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
