From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail172.messagelabs.com (mail172.messagelabs.com [216.82.254.3]) by kanga.kvack.org (Postfix) with ESMTP id 702B66B01B7 for ; Mon, 22 Mar 2010 13:11:52 -0400 (EDT) Date: Mon, 22 Mar 2010 10:09:54 -0400 From: Andrew Morton Subject: Re: [Bugme-new] [Bug 15610] New: fsck leads to swapper - BUG: unable to handle kernel NULL pointer dereference & panic Message-Id: <20100322100954.5ecaec4b.akpm@linux-foundation.org> In-Reply-To: References: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: bugzilla-daemon@bugzilla.kernel.org, bugme-daemon@bugzilla.kernel.org, ozgur.yuksel@oracle.com List-ID: (switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). This is a post-2.6.33 regression. On Mon, 22 Mar 2010 15:59:44 GMT bugzilla-daemon@bugzilla.kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=15610 > > Summary: fsck leads to swapper - BUG: unable to handle kernel > NULL pointer dereference & panic > Product: Memory Management > Version: 2.5 > Kernel Version: 2.6.34-rc2-220bf991b0366cc50a94feede3d7341fa5710ee4 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: Other > AssignedTo: akpm@linux-foundation.org > ReportedBy: ozgur.yuksel@oracle.com > Regression: No > > > During fsck.ext3 being performed (even with regular / clean forced runs), we > get a swapper crash: > [ 159.557737] BUG: unable to handle kernel NULL pointer dereference at (null) > [ 159.561687] IP: [] __wake_up_common+0x1a/0x70 err, what the heck? zone->wait_table didn't get initialised? I can't think of anything we did which might have caused that. Sorry to have to ask this, but... would it be possible for you to do a bisection of this? http://landley.net/writing/git-quick.html has some tips. Thanks. > [ 159.561687] *pdpt = 0000000000853001 *pde = 0000000000000000 > [ 159.561687] Oops: 0000 [#1] SMP > [ 159.561687] last sysfs file: /sys/kernel/uevent_seqnum > [ 159.561687] Modules linked in: snd_hda_codec_idt snd_hda_intel snd_hda_codec > snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcmt > [ 159.561687] > [ 159.561687] Pid: 0, comm: swapper Not tainted 2.6.34-rc2 #10 0KU184/Latitude > D630 > [ 159.561687] EIP: 0060:[] EFLAGS: 00010086 CPU: 1 > [ 159.561687] EIP is at __wake_up_common+0x1a/0x70 > [ 159.561687] EAX: c4f32f00 EBX: fffffff4 ECX: 00000001 EDX: 00000000 > [ 159.561687] ESI: 00000003 EDI: 00000096 EBP: f747bc84 ESP: f747bc68 > [ 159.561687] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 > [ 159.561687] Process swapper (pid: 0, ti=f747a000 task=f743e600 > task.ti=f747a000) > [ 159.561687] Stack: > [ 159.561687] f747bc70 00000001 00000003 c058d79a c4f32efc 00000003 00000096 > f747bca4 > [ 159.561687] <0> c0136cd7 00000000 f747bcb0 00000001 c0e00000 c07b2700 > c0e00000 f747bcb8 > [ 159.561687] <0> c0161689 f747bcb0 c0e00000 00000002 f747bcc8 c01616ea > c0e00000 c539be20 > [ 159.561687] Call Trace: > [ 159.561687] [] ? _raw_spin_lock_irqsave+0x2a/0x40 > [ 159.561687] [] ? __wake_up+0x37/0x50 > [ 159.561687] [] ? __wake_up_bit+0x29/0x30 > [ 159.561687] [] ? wake_up_bit+0x5a/0x60 > [ 159.561687] [] ? unlock_buffer+0x11/0x20 > [ 159.561687] [] ? end_buffer_async_read+0x62/0x120 > [ 159.561687] [] ? end_bio_bh_io_sync+0x1e/0x40 > [ 159.561687] [] ? bio_endio+0x15/0x30 > [ 159.561687] [] ? req_bio_endio+0xa2/0x100 > [ 159.561687] [] ? blk_update_request+0xe9/0x3e0 > [ 159.561687] [] ? lapic_next_event+0x16/0x20 > [ 159.561687] [] ? clockevents_program_event+0x87/0x140 > [ 159.561687] [] ? blk_update_bidi_request+0x16/0x60 > [ 159.561687] [] ? blk_end_bidi_request+0x23/0x70 > [ 159.561687] [] ? blk_end_request+0x12/0x20 > [ 159.561687] [] ? scsi_io_completion+0x8e/0x550 > [ 159.561687] [] ? ata_sff_hsm_move+0x188/0x770 > [ 159.561687] [] ? scsi_device_unbusy+0x93/0xa0 > [ 159.561687] [] ? scsi_finish_command+0x98/0x100 > [ 159.561687] [] ? scsi_decide_disposition+0x16d/0x1a0 > [ 159.561687] [] ? scsi_softirq_done+0x10b/0x130 > [ 159.561687] [] ? blk_done_softirq+0x62/0x70 > [ 159.561687] [] ? __do_softirq+0x90/0x1a0 > [ 159.561687] [] ? ack_apic_level+0x6a/0x200 > [ 159.561687] [] ? do_softirq+0x3d/0x40 > [ 159.561687] [] ? irq_exit+0x5d/0x70 > [ 159.561687] [] ? do_IRQ+0x50/0xc0 > [ 159.561687] [] ? sched_clock_local+0xa4/0x180 > [ 159.561687] [] ? common_interrupt+0x30/0x40 > [ 159.561687] [] ? parse_args+0x23b/0x2d0 > [ 159.561687] [] ? acpi_idle_enter_bm+0x25e/0x28f > [ 159.561687] [] ? cpuidle_idle_call+0x6e/0xf0 > [ 159.561687] [] ? cpu_idle+0x8c/0xd0 > [ 159.561687] [] ? start_secondary+0x1f5/0x1fb > [ 159.561687] Code: 90 55 89 e5 e8 68 ff ff ff 5d c3 8d b6 00 00 00 00 55 89 > e5 57 56 53 83 ec 10 89 55 ec 89 4d e8 8b 50 > [ 159.561687] EIP: [] __wake_up_common+0x1a/0x70 SS:ESP > 0068:f747bc68 > [ 159.561687] CR2: 0000000000000000 > [ 159.561687] ---[ end trace 0fd75502f6ca2e6e ]--- > > and panic: > [ 159.561687] Kernel panic - not syncing: Fatal exception in interrupt > [ 159.561687] Pid: 0, comm: swapper Tainted: G D 2.6.34-rc2 #10 > [ 159.561687] Call Trace: > [ 159.561687] [] ? printk+0x18/0x21 > [ 159.561687] [] panic+0x42/0xb3 > [ 159.561687] [] oops_end+0x97/0xa0 > [ 159.561687] [] no_context+0xbe/0x190 > [ 159.561687] [] __bad_area_nosemaphore+0x37/0x160 > [ 159.561687] [] ? enqueue_task_fair+0x41/0x90 > [ 159.561687] [] ? enqueue_task+0x79/0x90 > [ 159.561687] [] bad_area_nosemaphore+0x12/0x20 > [ 159.561687] [] do_page_fault+0x2f6/0x380 > [ 159.561687] [] ? try_to_wake_up+0x2bc/0x430 > [ 159.561687] [] ? do_page_fault+0x0/0x380 > [ 159.561687] [] error_code+0x73/0x80 > [ 159.561687] [] ? __sched_fork+0xcb/0x2b0 > [ 159.561687] [] ? __wake_up_common+0x1a/0x70 > [ 159.561687] [] ? _raw_spin_lock_irqsave+0x2a/0x40 > [ 159.561687] [] __wake_up+0x37/0x50 > [ 159.561687] [] __wake_up_bit+0x29/0x30 > [ 159.561687] [] wake_up_bit+0x5a/0x60 > [ 159.561687] [] unlock_buffer+0x11/0x20 > [ 159.561687] [] end_buffer_async_read+0x62/0x120 > [ 159.561687] [] end_bio_bh_io_sync+0x1e/0x40 > [ 159.561687] [] bio_endio+0x15/0x30 > [ 159.561687] [] req_bio_endio+0xa2/0x100 > [ 159.561687] [] blk_update_request+0xe9/0x3e0 > [ 159.561687] [] ? lapic_next_event+0x16/0x20 > [ 159.561687] [] ? clockevents_program_event+0x87/0x140 > [ 159.561687] [] blk_update_bidi_request+0x16/0x60 > [ 159.561687] [] blk_end_bidi_request+0x23/0x70 > [ 159.561687] [] blk_end_request+0x12/0x20 > [ 159.561687] [] scsi_io_completion+0x8e/0x550 > [ 159.561687] [] ? ata_sff_hsm_move+0x188/0x770 > [ 159.561687] [] ? scsi_device_unbusy+0x93/0xa0 > [ 159.561687] [] scsi_finish_command+0x98/0x100 > [ 159.561687] [] ? scsi_decide_disposition+0x16d/0x1a0 > [ 159.561687] [] scsi_softirq_done+0x10b/0x130 > [ 159.561687] [] blk_done_softirq+0x62/0x70 > [ 159.561687] [] __do_softirq+0x90/0x1a0 > [ 159.561687] [] ? ack_apic_level+0x6a/0x200 > [ 159.561687] [] do_softirq+0x3d/0x40 > [ 159.561687] [] irq_exit+0x5d/0x70 > [ 159.561687] [] do_IRQ+0x50/0xc0 > [ 159.561687] [] ? sched_clock_local+0xa4/0x180 > [ 159.561687] [] common_interrupt+0x30/0x40 > [ 159.561687] [] ? parse_args+0x23b/0x2d0 > [ 159.561687] [] ? acpi_idle_enter_bm+0x25e/0x28f > [ 159.561687] [] cpuidle_idle_call+0x6e/0xf0 > [ 159.561687] [] cpu_idle+0x8c/0xd0 > [ 159.561687] [] start_secondary+0x1f5/0x1fb > [ 159.561687] [drm:drm_fb_helper_panic] *ERROR* panic occurred, switching back > to text console > ... > full serial console dump to be attached. > -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. 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