[Ocfs2-users] one node kernel panic

Fri Oct 7 09:28:32 PDT 2011

uek is a different kernel entirely. It is hard to say whether you
will or will not hit it with uek mainly because the underlying code
is different.

On 10/06/2011 10:33 PM, Hideyasu Kojima wrote:
> Thank you for responding.
>
> I think UEK5 is based on RHEL5 kernel.
> Does the problem same as UEK5 arise?
>
> (2011/10/05 1:45), Sunil Mushran wrote:
>> int sigprocmask(int how, sigset_t *set, sigset_t *oldset)
>> {
>> int error;
>>
>> spin_lock_irq(&current->sighand->siglock); <==== CRASH
>> if (oldset)
>> *oldset = current->blocked;
>> ...
>> }
>>
>> current->sighand is NULL. So definitely a race. Generic kernel issue.
>> Ping your kernel vendor.
>>
>> On 10/03/2011 07:49 PM, Hideyasu Kojima wrote:
>>> Hi,
>>>
>>> I run ocfs2/drbd active-active 2node cluster.
>>>
>>> ocfs2 version is 1.4.7-1
>>> ocfs2-tool version is 1.4.4
>>> Linux version is RHEL 5.4 (2.6.18-164.el5 x86_64)
>>>
>>> 1 node crash with kernel panic once.
>>>
>>> What is the cause?
>>>
>>> The bottom is the analysis of vmcore.
>>>
>>> ========================================================
>>>
>>> Unable to handle kernel NULL pointer dereference at 0000000000000808 RIP:
>>> [<ffffffff80064ae6>] _spin_lock_irq+0x1/0xb
>>> PGD 187e15067 PUD 187e16067 PMD 0
>>> Oops: 0002 [1] SMP
>>> last sysfs file:
>>> /devices/pci0000:00/0000:00:09.0/0000:06:00.0/0000:07:00.0/irq
>>> CPU 1
>>> Modules linked in: mptctl mptbase softdog autofs4 ipmi_devintf ipmi_si
>>> ipmi_msghandler ocfs2(U) ocfs2_dlmfs(U) ocfs2_dlm(U)
>>> ocfs2_nodemanager(U) configfs drbd(U) bonding ipv6 xfrm_nalgo crypto_api
>>> bnx2i(U) libiscsi2 scsi_transport_iscsi2 scsi_transport_iscsi cnic(U)
>>> dm_mirror dm_multipath scsi_dh video hwmon backlight sbs i2c_ec i2c_core
>>> button battery asus_acpi acpi_memhotplug ac parport_pc lp parport joydev
>>> sr_mod cdrom sg pcspkr serio_raw hpilo bnx2(U) dm_raid45 dm_message
>>> dm_region_hash dm_log dm_mod dm_mem_cache hpahcisr(PU) ata_piix libata
>>> shpchp cciss sd_mod scsi_mod ext3 jbd uhci_hcd ohci_hcd ehci_hcd
>>> Pid: 21924, comm: res Tainted: P 2.6.18-164.el5 #1
>>> RIP: 0010:[<ffffffff80064ae6>] [<ffffffff80064ae6>]
>>> _spin_lock_irq+0x1/0xb
>>> RSP: 0018:ffff81008b1cfae0 EFLAGS: 00010002
>>> RAX: ffff810187af4040 RBX: 0000000000000000 RCX: ffff8101342b7b80
>>> RDX: ffff81008b1cfb98 RSI: ffff81008b1cfba8 RDI: 0000000000000808
>>> RBP: ffff81008b1cfb98 R08: 0000000000000000 R09: 0000000000000000
>>> R10: ffff810075463090 R11: ffffffff88595b95 R12: ffff81008b1cfba8
>>> R13: ffff81007f070520 R14: 0000000000000001 R15: ffff81008b1cfce8
>>> FS: 0000000000000000(0000) GS:ffff810105d51840(0000)
>>> knlGS:0000000000000000
>>> CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
>>> CR2: 0000000000000808 CR3: 0000000187e14000 CR4: 00000000000006e0
>>> Process res (pid: 21924, threadinfo ffff81008b1ce000, task
>>> ffff810187af4040)
>>> Stack: ffffffff8001db30 ffff81007f070520 ffffffff885961f3
>>> ffff810105d39400
>>> ffffffff88596323 06ff813231393234 ffff810075463018 ffff810075463018
>>> 0000000000000297 ffff81007f070520 ffff810075463028 0000000000000246
>>> Call Trace:
>>> [<ffffffff8001db30>] sigprocmask+0x28/0xdb
>>> [<ffffffff885961f3>] :ocfs2:ocfs2_delete_inode+0x0/0x1691
>>> [<ffffffff88596323>] :ocfs2:ocfs2_delete_inode+0x130/0x1691
>>> [<ffffffff88581f16>] :ocfs2:ocfs2_drop_lock+0x67a/0x77b
>>> [<ffffffff8858026a>] :ocfs2:ocfs2_remove_lockres_tracking+0x10/0x45
>>> [<ffffffff885961f3>] :ocfs2:ocfs2_delete_inode+0x0/0x1691
>>> [<ffffffff8002f49e>] generic_delete_inode+0xc6/0x143
>>> [<ffffffff88595c85>] :ocfs2:ocfs2_drop_inode+0xf0/0x161
>>> [<ffffffff8000d46e>] dput+0xf6/0x114
>>> [<ffffffff800e9c44>] prune_one_dentry+0x66/0x76
>>> [<ffffffff8002e958>] prune_dcache+0x10f/0x149
>>> [<ffffffff8004d66e>] shrink_dcache_parent+0x1c/0xe1
>>> [<ffffffff80104f8b>] proc_flush_task+0x17c/0x1f6
>>> [<ffffffff8008fa2c>] sched_exit+0x27/0xb5
>>> [<ffffffff80018024>] release_task+0x387/0x3cb
>>> [<ffffffff80015c50>] do_exit+0x865/0x911
>>> [<ffffffff80049281>] cpuset_exit+0x0/0x88
>>> [<ffffffff8002b080>] get_signal_to_deliver+0x42c/0x45a
>>> [<ffffffff8005ae7b>] do_notify_resume+0x9c/0x7af
>>> [<ffffffff8008b6a2>] deactivate_task+0x28/0x5f
>>> [<ffffffff80021f3f>] __up_read+0x19/0x7f
>>> [<ffffffff80066b58>] do_page_fault+0x4fe/0x830
>>> [<ffffffff800b65b2>] audit_syscall_exit+0x336/0x362
>>> [<ffffffff8005d32e>] int_signal+0x12/0x17
>>>
>>>
>>> Code: f0 ff 0f 0f 88 f3 00 00 00 c3 53 48 89 fb e8 33 f5 02 00 f0
>>> RIP [<ffffffff80064ae6>] _spin_lock_irq+0x1/0xb
>>> RSP<ffff81008b1cfae0>
>>> crash> bt
>>> PID: 21924 TASK: ffff810187af4040 CPU: 1 COMMAND: "res"
>>> #0 [ffff81008b1cf840] crash_kexec at ffffffff800ac5b9
>>> #1 [ffff81008b1cf900] __die at ffffffff80065127
>>> #2 [ffff81008b1cf940] do_page_fault at ffffffff80066da7
>>> #3 [ffff81008b1cfa30] error_exit at ffffffff8005dde9
>>> [exception RIP: _spin_lock_irq+1]
>>> RIP: ffffffff80064ae6 RSP: ffff81008b1cfae0 RFLAGS: 00010002
>>> RAX: ffff810187af4040 RBX: 0000000000000000 RCX: ffff8101342b7b80
>>> RDX: ffff81008b1cfb98 RSI: ffff81008b1cfba8 RDI: 0000000000000808
>>> RBP: ffff81008b1cfb98 R8: 0000000000000000 R9: 0000000000000000
>>> R10: ffff810075463090 R11: ffffffff88595b95 R12: ffff81008b1cfba8
>>> R13: ffff81007f070520 R14: 0000000000000001 R15: ffff81008b1cfce8
>>> ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
>>> #4 [ffff81008b1cfae0] sigprocmask at ffffffff8001db30
>>> #5 [ffff81008b1cfb00] ocfs2_delete_inode at ffffffff88596323
>>> #6 [ffff81008b1cfbf0] generic_delete_inode at ffffffff8002f49e
>>> #7 [ffff81008b1cfc10] ocfs2_drop_inode at ffffffff88595c85
>>> #8 [ffff81008b1cfc30] dput at ffffffff8000d46e
>>> #9 [ffff81008b1cfc50] prune_one_dentry at ffffffff800e9c44
>>> #10 [ffff81008b1cfc70] prune_dcache at ffffffff8002e958
>>> #11 [ffff81008b1cfca0] shrink_dcache_parent at ffffffff8004d66e
>>> #12 [ffff81008b1cfcd0] proc_flush_task at ffffffff80104f8b
>>> #13 [ffff81008b1cfd30] release_task at ffffffff80018024
>>> #14 [ffff81008b1cfd60] do_exit at ffffffff80015c50
>>> #15 [ffff81008b1cfdc0] get_signal_to_deliver at ffffffff8002b080
>>> #16 [ffff81008b1cfe00] do_notify_resume at ffffffff8005ae7b
>>> #17 [ffff81008b1cff50] int_signal at ffffffff8005d32e
>>> RIP: 0000003e4becced2 RSP: 000000004124afd0 RFLAGS: 00000202
>>> RAX: fffffffffffffdfe RBX: 0000000000000000 RCX: ffffffffffffffff
>>> RDX: 0000000000000000 RSI: 000000004124b040 RDI: 0000000000000006
>>> RBP: 000000004124b0e0 R8: 000000004124b110 R9: 00000000000055a4
>>> R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
>>> R13: 000000004124c000 R14: 000000004124b940 R15: 0000000000001000
>>> ORIG_RAX: 0000000000000017 CS: 0033 SS: 002b
>>> crash>
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