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Date: Tue, 4 Nov 2008 18:27:27 +0100 From: Folkert van Heusden <folkert@...heusden.com> To: linux-kernel@...r.kernel.org Subject: [2.6.26] OOPS: unable to handle kernel NULL pointer dereference at 0000000000000038 While running my http://vanheusden.com/pyk/ script (which randomly inserts and removes modules) I triggered the folllowing WARNING in a 2.6.26 kernel on an IBM xSeries x3650 (2 quadcores (intel qc x5450) and 10GB ram). (probably related to previous report) [ 2813.078161] BUG: unable to handle kernel NULL pointer dereference at 0000000000000038 [ 2813.078161] IP: [<ffffffff802e2264>] sysfs_addrm_start+0x2d/0x99 [ 2813.078161] PGD 2bb8be067 PUD 2bb89d067 PMD 0 [ 2813.078161] Oops: 0000 [1] SMP [ 2813.078161] CPU 5 [ 2813.078161] Modules linked in: cpufreq_conservative(+) dock ppdev cpufreq_ondemand sg lp cpufreq_userspace acpi_cpufreq pcspkr edac_core ses parport_pc appletalk(-) enclosure loop parport video output battery cdrom rng_core qla2xxx(-) ac rfcomm l2cap bluetooth nfsd lockd nfs_acl auth_rpcgss sunrpc exportfs freq_table ipv6 evdev ext3 jbd mbcache dm_log dm_mod usbhid hid ff_memless sd_mod firmware_class scsi_transport_fc ide_pci_generic ide_core ehci_hcd uhci_hcd scsi_tgt aacraid scsi_mod processor thermal_sys [last unloaded: thermal] [ 2813.078161] Pid: 10082, comm: qla2xxx_8_dpc Tainted: G W 2.6.26-1-amd64 #1 [ 2813.078161] RIP: 0010:[<ffffffff802e2264>] [<ffffffff802e2264>] sysfs_addrm_start+0x2d/0x99 [ 2813.078161] RSP: 0000:ffff8102ba429a60 EFLAGS: 00010246 [ 2813.083209] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 2813.083209] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8102bfc2d000 [ 2813.083209] RBP: ffff8102ba429a80 R08: 0000000000000080 R09: ffff8102ba429980 [ 2813.083209] R10: ffff8102b8c7a598 R11: 00000e8e90dbbaa0 R12: 00000000fffffff4 [ 2813.083209] R13: 0000000000000000 R14: ffff8102ba429ad8 R15: ffff81028a49c170 [ 2813.083209] FS: 0000000000000000(0000) GS:ffff8102be5696c0(0000) knlGS:0000000000000000 [ 2813.083209] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b [ 2813.083209] CR2: 0000000000000038 CR3: 00000002b99eb000 CR4: 00000000000006e0 [ 2813.083209] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 2813.083209] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 2813.083209] Process qla2xxx_8_dpc (pid: 10082, threadinfo ffff8102ba428000, task ffff8102bbc7c140) [ 2813.083209] Stack: 00000000fffffff4 ffff8102b8c7a550 ffff8102bc541460 ffffffff802e272b [ 2813.083209] 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 2813.083209] ffff8102b8c7a550 ffff8102b8c7a400 00000000fffffffe ffff8102b8c7a598 [ 2813.083209] Call Trace: [ 2813.083209] [<ffffffff802e272b>] ? create_dir+0x44/0x87 [ 2813.083209] [<ffffffff802e27a3>] ? sysfs_create_dir+0x35/0x4a [ 2813.083209] [<ffffffff8031ae88>] ? kobject_get+0x12/0x17 [ 2813.083209] [<ffffffff8031afb5>] ? kobject_add_internal+0xc3/0x17e [ 2813.083209] [<ffffffff8031b46e>] ? kobject_add+0x74/0x7c [ 2813.083209] [<ffffffff8031f235>] ? sprintf+0x51/0x59 [ 2813.083209] [<ffffffff8031ae88>] ? kobject_get+0x12/0x17 [ 2813.083209] [<ffffffff80382771>] ? get_device+0x17/0x20 [ 2813.083209] [<ffffffff80382d81>] ? device_add+0x9b/0x53f [ 2813.083209] [<ffffffff80386df6>] ? attribute_container_add_device+0x3f/0x124 [ 2813.083209] [<ffffffffa00a30e7>] ? :scsi_transport_fc:fc_remote_port_add+0x47a/0x60d [ 2813.083209] [<ffffffffa03864a4>] ? :qla2xxx:qla2x00_update_fcport+0x2b8/0x363 [ 2813.083209] [<ffffffffa038e02d>] ? :qla2xxx:qla2x00_get_port_database+0x2f0/0x2fe [ 2813.083209] [<ffffffffa03868fa>] ? :qla2xxx:qla2x00_configure_local_loop+0x32a/0x3c0 [ 2813.083209] [<ffffffffa0386d14>] ? :qla2xxx:qla2x00_configure_loop+0x384/0x10fd [ 2813.083209] [<ffffffffa038c854>] ? :qla2xxx:qla2x00_get_retry_cnt+0x43/0xbd [ 2813.083209] [<ffffffff8023ca94>] ? process_timeout+0x0/0x5 [ 2813.083209] [<ffffffff8042874a>] ? schedule_timeout+0x85/0xad [ 2813.083209] [<ffffffffa0387ae9>] ? :qla2xxx:qla2x00_loop_resync+0x5c/0xae [ 2813.083209] [<ffffffffa03848d5>] ? :qla2xxx:qla2x00_do_dpc+0x435/0x4d4 [ 2813.083209] [<ffffffffa03844a0>] ? :qla2xxx:qla2x00_do_dpc+0x0/0x4d4 [ 2813.083209] [<ffffffff80245efb>] ? kthread+0x47/0x74 [ 2813.083209] [<ffffffff80230057>] ? schedule_tail+0x27/0x5c [ 2813.083209] [<ffffffff8020cef8>] ? child_rip+0xa/0x12 [ 2813.083209] [<ffffffff80245eb4>] ? kthread+0x0/0x74 [ 2813.083209] [<ffffffff8020ceee>] ? child_rip+0x0/0x12 [ 2813.083209] [ 2813.083209] [ 2813.083209] Code: c0 b9 08 00 00 00 fc 53 48 89 fd 48 89 f3 48 83 ec 08 f3 ab 48 89 75 00 48 c7 c7 20 ba 50 80 e8 18 67 14 00 48 8b 3d 64 1b 37 00 <48> 8b 73 38 48 89 d9 48 c7 c2 b8 1f 2e 80 e8 09 a5 fc ff 48 85 [ 2813.089237] RIP [<ffffffff802e2264>] sysfs_addrm_start+0x2d/0x99 [ 2813.089237] RSP <ffff8102ba429a60> [ 2813.089237] CR2: 0000000000000038 [ 2813.096458] ---[ end trace a70f168407a6dea1 ]--- Folkert van Heusden -- MultiTail รจ uno flexible tool per seguire di logfiles e effettuazione di commissioni. Feltrare, provedere da colore, merge, 'diff-view', etc. http://www.vanheusden.com/multitail/ ---------------------------------------------------------------------- Phone: +31-6-41278122, PGP-key: 1F28D8AE, www.vanheusden.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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