From mboxrd@z Thu Jan 1 00:00:00 1970 From: compudj@krystal.dyndns.org (Mathieu Desnoyers) Date: Tue, 2 Feb 2010 17:09:28 -0500 Subject: [ltt-dev] kernel panic In-Reply-To: <4B673EC4.3090204@polymtl.ca> References: <4B66FE92.7070608@polymtl.ca> <20100201165235.GA12946@Krystal> <4B673EC4.3090204@polymtl.ca> Message-ID: <20100202220928.GD656@Krystal> * Benjamin Poirier (benjamin.poirier at polymtl.ca) wrote: > Mathieu Desnoyers wrote: > > * Benjamin Poirier (benjamin.poirier at polymtl.ca) wrote: > > > >> Hello, > >> > >> I'm getting some panics at marker activation/disactivation with 0.188. Not all the time but often enough to be easy to reproduce. I just run `while true; do ltt-armall; ltt-disarmall; done` and wait a few seconds. Its quite similar to what I was seeing a few months ago. Here it goes: > >> > > > > Please try to reproduce with Immediate Values disabled. > > > The panics don't happen. > Can you give me the kernel configuration for which the panic happens ? Thanks, Mathieu > -Ben > > Thanks, > > > > Mathieu > > > > > >> [ 31.877009] BUG: unable to handle kernel NULL pointer dereference at 00000001 > >> [ 31.877044] IP: [] arch_imv_update+0x7f/0x201 > >> [ 31.877044] *pde = 00000000 > >> [ 31.877044] Oops: 0002 [#1] SMP > >> [ 31.877044] LTT NESTING LEVEL : 0 > >> [ 31.877044] last sysfs file: /sys/kernel/uevent_seqnum > >> [ 31.877044] > >> [ 31.877044] Pid: 3406, comm: ltt-disarmall Not tainted (2.6.32.4 #135) > >> [ 31.877044] EIP: 0060:[] EFLAGS: 00010086 CPU: 0 > >> [ 31.877044] EIP is at arch_imv_update+0x7f/0x201 > >> [ 31.877044] EAX: 00000001 EBX: c17209a8 ECX: 00000000 EDX: f6bffe40 > >> [ 31.877044] ESI: 00000000 EDI: f6bffe40 EBP: f6bffe28 ESP: f6bffe18 > >> [ 31.877044] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 > >> [ 31.877044] Process ltt-disarmall (pid: 3406, ti=f6bfe000 task=f6bf8f60 task.ti=f6bfe000) > >> [ 31.877044] Stack: > >> [ 31.877044] 000000ef c17209a8 00000000 fff20c40 f6bffe38 c1015777 00000000 f6bffec0 > >> [ 31.877044] <0> f6bffe9c c10034b6 00000000 f6bffebf 00000001 f6bffec0 fff20c40 f6bffe9c > >> [ 31.877044] <0> 000006cc 0000007b 0000007b 000000d8 00000000 ffffff10 c10074d3 00000060 > >> [ 31.877044] Call Trace: > >> [ 31.877044] [] ? smp_apic_timer_interrupt+0x44/0x9c > >> [ 31.877044] [] ? apic_timer_interrupt+0x2a/0x30 > >> [ 31.877044] [] ? text_poke+0x13f/0x14a > >> [ 31.877044] [] ? trace_irq_entry+0x10/0x38 > >> [ 31.877044] [] ? trace_irq_entry+0x12/0x38 > >> [ 31.877044] [] ? arch_imv_update+0x180/0x201 > >> [ 31.877044] [] ? trace_irq_entry+0x10/0x38 > >> [ 31.877044] [] ? imv_update_range+0x3e/0x8c > >> [ 31.877044] [] ? core_imv_update+0x12/0x15 > >> [ 31.877044] [] ? tracepoint_update_probes+0x17/0x19 > >> [ 31.877044] [] ? tracepoint_probe_update_all+0x7c/0xb4 > >> [ 31.877044] [] ? marker_update_probes+0x17/0x1e > >> [ 31.877044] [] ? marker_probe_unregister+0x4e/0x7c > >> [ 31.877044] [] ? ltt_marker_disconnect+0x89/0xd4 > >> [ 31.877044] [] ? marker_enable_write+0x9d/0xb9 > >> [ 31.877044] [] ? marker_enable_write+0x0/0xb9 > >> [ 31.877044] [] ? vfs_write+0x84/0xdf > >> [ 31.877044] [] ? sys_write+0x3c/0x87 > >> [ 31.877044] [] ? sysenter_do_call+0x12/0x22 > >> [ 31.877044] Code: 85 8e 01 00 00 80 7d da 0a 76 0f ba f0 00 00 00 b8 9c b3 5a c1 e8 03 8f 01 00 eb 18 8d b6 00 00 00 00 8d bc 27 00 00 00 00 b0 01 <01> 00 04 00 0d 2c 43 76 cc b8 90 88 01 c1 ba 9b 88 01 c1 89 15 > >> [ 31.877044] EIP: [] arch_imv_update+0x7f/0x201 SS:ESP 0068:f6bffe18 > >> [ 31.877044] CR2: 0000000000000001 > >> [ 31.877044] ---[ end trace f0cbc16b434adca6 ]--- > >> [ 31.877044] Kernel panic - not syncing: Fatal exception in interrupt > >> [ 31.877044] Pid: 3406, comm: ltt-disarmall Tainted: G D 2.6.32.4 #135 > >> [ 31.877044] Call Trace: > >> [ 31.877044] [] panic+0x5b/0xfd > >> [ 31.877044] [] oops_end+0x8a/0xa9 > >> [ 31.877044] [] no_context+0x10c/0x116 > >> [ 31.877044] [] __bad_area_nosemaphore+0x186/0x18e > >> [ 31.877044] [] ? put_dec+0x2a/0xff > >> [ 31.877044] [] ? notifier_call_chain+0x2b/0x4a > >> [ 31.877044] [] bad_area_nosemaphore+0xd/0x10 > >> [ 31.877044] [] do_page_fault+0x11d/0x2e5 > >> [ 31.877044] [] ? do_page_fault+0x0/0x2e5 > >> [ 31.877044] [] error_code+0x66/0x6c > >> [ 31.877044] [] ? do_page_fault+0x0/0x2e5 > >> [ 31.877044] [] ? arch_imv_update+0x7f/0x201 > >> [ 31.877044] [] smp_apic_timer_interrupt+0x44/0x9c > >> [ 31.877044] [] apic_timer_interrupt+0x2a/0x30 > >> [ 31.877044] [] ? text_poke+0x13f/0x14a > >> [ 31.877044] [] ? trace_irq_entry+0x10/0x38 > >> [ 31.877044] [] ? trace_irq_entry+0x12/0x38 > >> [ 31.877044] [] arch_imv_update+0x180/0x201 > >> [ 31.877044] [] ? trace_irq_entry+0x10/0x38 > >> [ 31.877044] [] imv_update_range+0x3e/0x8c > >> [ 31.877044] [] core_imv_update+0x12/0x15 > >> [ 31.877044] [] tracepoint_update_probes+0x17/0x19 > >> [ 31.877044] [] tracepoint_probe_update_all+0x7c/0xb4 > >> [ 31.877044] [] marker_update_probes+0x17/0x1e > >> [ 31.877044] [] marker_probe_unregister+0x4e/0x7c > >> [ 31.877044] [] ltt_marker_disconnect+0x89/0xd4 > >> [ 31.877044] [] marker_enable_write+0x9d/0xb9 > >> [ 31.877044] [] ? marker_enable_write+0x0/0xb9 > >> [ 31.877044] [] vfs_write+0x84/0xdf > >> [ 31.877044] [] sys_write+0x3c/0x87 > >> [ 31.877044] [] sysenter_do_call+0x12/0x22 > >> > >> Tell me if you need more info. > >> > >> -Ben > >> > >> _______________________________________________ > >> ltt-dev mailing list > >> ltt-dev at lists.casi.polymtl.ca > >> http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev > >> > >> > > > > > -- Mathieu Desnoyers OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68