From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Maier Subject: Re: multipathd: BUG: unable to handle kernel NULL pointer dereference Date: Wed, 23 Jan 2013 16:38:12 +0100 Message-ID: <510003E4.5050009@idowa.de> References: <20130122111950.149768tojz4wvgzq@webmail.idowa.de> Reply-To: device-mapper development Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1"; Format="flowed" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20130122111950.149768tojz4wvgzq@webmail.idowa.de> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com To: device-mapper development List-Id: dm-devel.ids Replying to myself: Switching to a custom build 2.6.39.4 seems to have fixed the issue. On 1/22/13 11:19 AM, Stefan Maier wrote: > Hi, > > I've got SuSE 11.4 running multipath tools compiled from git. > It looks like I've got the same problem as described here: http://www.spi= nics.net/lists/dm-devel/msg17038.html > > What is the status on this issue? > > > > Jan 22 10:59:20 kemper kernel: [ 738.009813] device-mapper: multipath: a= dding disabled device 65:160 > Jan 22 10:59:20 kemper kernel: [ 738.010368] BUG: unable to handle kerne= l NULL pointer dereference at (null) > Jan 22 10:59:20 kemper kernel: [ 738.010379] IP: [] dm= _set_device_limits+0x23/0x140 [dm_mod] > Jan 22 10:59:20 kemper kernel: [ 738.010392] PGD 84a9c9067 PUD 84afd8067= PMD 0 > Jan 22 10:59:20 kemper kernel: [ 738.010396] Oops: 0000 [#1] SMP > Jan 22 10:59:20 kemper kernel: [ 738.010400] last sysfs file: /sys/modul= e/scsi_dh_emc/initstate > Jan 22 10:59:20 kemper kernel: [ 738.010404] CPU 6 > Jan 22 10:59:20 kemper kernel: [ 738.010405] Modules linked in: raid1 dm= _service_time dm_round_robin scsi_dh_emc dm_multipath scsi_dh edd microcode= cpufreq_conservative cpufreq_userspace cpufreq_powersave acpi_cpufreq mper= f ext4 jbd2 crc16 dm_mod qla2xxx scsi_transport_fc scsi_tgt igb ghes pcspkr= hed joydev sg i2c_i801 iTCO_wdt iTCO_vendor_support dca button container u= sbhid xfs exportfs ehci_hcd usbcore fan processor 3w_sas thermal thermal_sys > Jan 22 10:59:20 kemper kernel: [ 738.010438] > Jan 22 10:59:20 kemper kernel: [ 738.010442] Pid: 3008, comm: multipathd= Not tainted 2.6.37.6-24-default #1 Thomas-Krenn.AG X9DR3-F/X9DR3-F > Jan 22 10:59:20 kemper kernel: [ 738.010449] RIP: 0010:[] [] dm_set_device_limits+0x23/0x140 [dm_mod] > Jan 22 10:59:20 kemper kernel: [ 738.010457] RSP: 0018:ffff880857bb9c78 = EFLAGS: 00010296 > Jan 22 10:59:20 kemper kernel: [ 738.010460] RAX: ffff8810447db9f8 RBX: = ffff8810493ba140 RCX: 0000000000200000 > Jan 22 10:59:20 kemper kernel: [ 738.010464] RDX: 0000000000000000 RSI: = 0000000000000000 RDI: ffffc900207f1040 > Jan 22 10:59:20 kemper kernel: [ 738.010468] RBP: ffffc900207f1040 R08: = ffff880857bb9d58 R09: 0000000000000200 > Jan 22 10:59:20 kemper kernel: [ 738.010472] R10: 0000160000000000 R11: = 0000000000000001 R12: ffff8810447db9f8 > Jan 22 10:59:20 kemper kernel: [ 738.010476] R13: 0000000000000000 R14: = ffff880857bb9d58 R15: ffff8810447db9c0 > Jan 22 10:59:20 kemper kernel: [ 738.010480] FS: 00007fb404e55700(0000)= GS:ffff88107fc00000(0000) knlGS:0000000000000000 > Jan 22 10:59:20 kemper kernel: [ 738.010484] CS: 0010 DS: 0000 ES: 0000= CR0: 000000008005003b > Jan 22 10:59:20 kemper kernel: [ 738.010488] CR2: 0000000000000000 CR3: = 000000084c1c3000 CR4: 00000000000406e0 > Jan 22 10:59:20 kemper kernel: [ 738.010491] DR0: 0000000000000000 DR1: = 0000000000000000 DR2: 0000000000000000 > Jan 22 10:59:20 kemper kernel: [ 738.010495] DR3: 0000000000000000 DR6: = 00000000ffff0ff0 DR7: 0000000000000400 > Jan 22 10:59:20 kemper kernel: [ 738.010500] Process multipathd (pid: 30= 08, threadinfo ffff880857bb8000, task ffff880857bb62c0) > Jan 22 10:59:20 kemper kernel: [ 738.010503] Stack: > Jan 22 10:59:20 kemper kernel: [ 738.010506] 00000000ffffffff ffff88087= f85ab80 ffff880857bb9cc8 000000000000000d > Jan 22 10:59:20 kemper kernel: [ 738.010513] ffff88087f85abe8 000000000= 0000001 ffff88087f85aba0 ffffffff81071b9f > Jan 22 10:59:20 kemper kernel: [ 738.010519] ffff880857bb9ce8 ffffffff8= 1041732 ffff8810493ba140 ffffc900207f1040 > Jan 22 10:59:20 kemper kernel: [ 738.010525] Call Trace: > Jan 22 10:59:20 kemper kernel: [ 738.010548] [] multi= path_iterate_devices+0x55/0x80 [dm_multipath] > Jan 22 10:59:20 kemper kernel: [ 738.010559] [] dm_ca= lculate_queue_limits+0x8c/0x130 [dm_mod] > Jan 22 10:59:20 kemper kernel: [ 738.010576] [] dm_sw= ap_table+0x6b/0x90 [dm_mod] > Jan 22 10:59:20 kemper kernel: [ 738.010589] [] do_re= sume+0x88/0x1b0 [dm_mod] > Jan 22 10:59:20 kemper kernel: [ 738.010609] [] ctl_i= octl+0x1ac/0x250 [dm_mod] > Jan 22 10:59:20 kemper kernel: [ 738.010629] [] dm_ct= l_ioctl+0xe/0x20 [dm_mod] > Jan 22 10:59:20 kemper kernel: [ 738.010651] [] do_vf= s_ioctl+0x77/0x2f0 > Jan 22 10:59:20 kemper kernel: [ 738.010660] [] sys_i= octl+0x80/0xa0 > Jan 22 10:59:20 kemper kernel: [ 738.010670] [] trace= sys+0xd9/0xde > Jan 22 10:59:20 kemper kernel: [ 738.010677] [<00007fb403926d87>] 0x7fb= 403926d87 > Jan 22 10:59:20 kemper kernel: [ 738.010680] Code: fd ff ff 0f 1f 44 00 = 00 48 83 ec 78 48 89 6c 24 58 4c 89 64 24 60 48 89 fd 4c 89 6c 24 68 48 89 = 5c 24 50 49 89 d5 4c 89 74 24 70 <4c> 8b 36 4d 89 c4 49 8b 86 98 00 00 00 4= 8 8b 98 08 03 00 00 48 > Jan 22 10:59:20 kemper kernel: [ 738.010708] RIP [] d= m_set_device_limits+0x23/0x140 [dm_mod] > Jan 22 10:59:20 kemper kernel: [ 738.010714] RSP > Jan 22 10:59:20 kemper kernel: [ 738.010717] CR2: 0000000000000000 > Jan 22 10:59:20 kemper kernel: [ 738.119186] ---[ end trace 61248b01dfe0= b885 ]--- > > > -- = Mit freundlichen Gr=FC=DFen Stefan Maier 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