http://bugzilla.kernel.org/show_bug.cgi?id=13311 Summary: mptsas: ioc0: removing ssp device, kernel oops Product: SCSI Drivers Version: 2.5 Kernel Version: 2.6.27.21 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Other AssignedTo: scsi_drivers-other@xxxxxxxxxxxxxxxxxxxx ReportedBy: mike.tummy@xxxxxxxxx Regression: No Created an attachment (id=21358) --> (http://bugzilla.kernel.org/attachment.cgi?id=21358) System information Distribution: openSUSE 11.1 (x86_64) SCSI storage controller: LSI Logic / Symbios Logic SAS1068E PCI-Express Fusion-MPT SAS (rev 08) This system had a kernel oops with the mptsas driver, the result of which caused the port to be detached. This removed the disks from the system causing processes like hald and umount to permanently block. I've attached the system information. Here are the syslog messages for the oops: ------------------------>8 Cut Here 8<------------------------ May 12 05:19:59 tile01-primary kernel: mptsas: ioc0: removing ssp device: fw_channel 0, fw_id 9, phy 8, sas_addr 0x5000155356664400 May 12 05:19:59 tile01-primary kernel: phy-6:0:16: mptsas: ioc0: delete phy 8, phy-obj (0xffff8804367ed400) May 12 05:19:59 tile01-primary kernel: phy-6:0:17: mptsas: ioc0: delete phy 9, phy-obj (0xffff8804367f0400) May 12 05:19:59 tile01-primary kernel: phy-6:0:18: mptsas: ioc0: delete phy 10, phy-obj (0xffff8804367f0c00) May 12 05:19:59 tile01-primary kernel: phy-6:0:19: mptsas: ioc0: delete phy 11, phy-obj (0xffff8804367f4400) May 12 05:19:59 tile01-primary kernel: port-6:0:1: mptsas: ioc0: delete port 1, sas_addr (0x5000155356664400) May 12 05:19:59 tile01-primary kernel: end_request: I/O error, dev sdc, sector 10975 May 12 05:19:59 tile01-primary kernel: REISERFS abort (device sdc1): Journal write error in flush_commit_list May 12 05:20:20 tile01-primary kernel: mptsas: ioc0: removing ssp device: fw_channel 0, fw_id 9, phy 9, sas_addr 0x5000155356664400 May 12 05:20:20 tile01-primary kernel: phy-6:0:16: mptsas: ioc0: delete phy 8, phy-obj (0xffff8804367ed400) May 12 05:20:20 tile01-primary kernel: phy-6:0:17: mptsas: ioc0: delete phy 9, phy-obj (0xffff8804367f0400) May 12 05:20:20 tile01-primary kernel: phy-6:0:18: mptsas: ioc0: delete phy 10, phy-obj (0xffff8804367f0c00) May 12 05:20:20 tile01-primary kernel: phy-6:0:19: mptsas: ioc0: delete phy 11, phy-obj (0xffff8804367f4400) May 12 05:20:20 tile01-primary kernel: port-6:0:1: mptsas: ioc0: delete port 1, sas_addr (0x5000155356664400) May 12 05:20:20 tile01-primary kernel: BUG: unable to handle kernel NULL pointer dereference at 0000000000000028 May 12 05:20:20 tile01-primary kernel: IP: [<ffffffff802fe7c2>] sysfs_find_dirent+0x9/0x2f May 12 05:20:20 tile01-primary kernel: PGD 8350bd067 PUD 831964067 PMD 0 May 12 05:20:20 tile01-primary kernel: Oops: 0000 [1] SMP May 12 05:20:20 tile01-primary kernel: last sysfs file: /sys/devices/system/cpu/cpu7/cache/index2/shared_cpu_map May 12 05:20:20 tile01-primary kernel: CPU 5 May 12 05:20:20 tile01-primary kernel: Modules linked in: reiserfs ip6t_LOG xt_tcpudp xt_pkttype ipt_LOG xt_limit 8021q garp stp bonding ip6t_REJECT nf_conntrack_ipv6 ip6table_raw xt_NOTRACK ipt_REJECT xt_state iptable_raw iptable_filter ip6table_mangle nf_conntrack_netbios_ns nf_conntrack_ipv4 nf_conntrack ip_tables ip6table_filter ip6_tables x_tables ipv6 cpufreq_conservative cpufreq_userspace cpufreq_powersave powernow_k8 ext3 jbd mbcache loop dm_mod cfi_cmdset_0002(N) cfi_util(N) jedec_probe( N) cfi_probe(N) gen_probe(N) ck804xrom(N) mtd sr_mod qla3xxx rtc_cmos joydev button i2c_nforce2 shpchp cdrom forcedeth rtc_core chipreg(N) mptctl i2c_core map_funcs(N) pcspkr rtc_lib sg pci_hotplug usbhid hid ff_memless ohci_hcd ehci_hcd sd_mod crc_t10dif usbcore qla4xxx scsi_transport_iscsi edd xfs fan 3w_9xxx ide_pci_generic amd74 xx ide_core ata_generic pata_amd mptsas mptscsih mptbase scsi_transport_sas sata_nv libata scsi_mod dock thermal processor thermal_sys hwmon [last unloaded: libcrc32c] May 12 05:20:20 tile01-primary kernel: Supported: No May 12 05:20:20 tile01-primary kernel: Pid: 210, comm: mpt/0 Tainted: G 2.6.27.21-0.1-default #1 May 12 05:20:20 tile01-primary kernel: RIP: 0010:[<ffffffff802fe7c2>] [<ffffffff802fe7c2>] sysfs_find_dirent+0x9/0x2f May 12 05:20:20 tile01-primary kernel: RSP: 0018:ffff880434479c00 EFLAGS: 00010286 May 12 05:20:20 tile01-primary kernel: RAX: ffff8804367edda8 RBX: ffffffff805b9885 RCX: ffff8804367edda8 May 12 05:20:20 tile01-primary kernel: RDX: ffff8804367edda8 RSI: ffffffff805b9885 RDI: 0000000000000000 May 12 05:20:20 tile01-primary kernel: RBP: ffffffff805b9885 R08: ffff880400000030 R09: ffff880400000030 May 12 05:20:20 tile01-primary kernel: R10: 0000000000000010 R11: 0000000000018620 R12: 0000000000000000 May 12 05:20:20 tile01-primary kernel: R13: ffff8804367edcf0 R14: ffff8804367edcf0 R15: ffff8804367ede60 May 12 05:20:20 tile01-primary kernel: FS: 00007f9eb74ce6f0(0000) GS:ffff88083657c2c0(0000) knlGS:0000000000000000 May 12 05:20:20 tile01-primary kernel: CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b May 12 05:20:20 tile01-primary kernel: CR2: 0000000000000028 CR3: 0000000834c1d000 CR4: 00000000000006e0 May 12 05:20:20 tile01-primary kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 May 12 05:20:20 tile01-primary kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 May 12 05:20:20 tile01-primary kernel: Process mpt/0 (pid: 210, threadinfo ffff880434478000, task ffff880434f0e3c0) May 12 05:20:20 tile01-primary kernel: Stack: ffff880434479c40 ffffffff805b9885 0000000000000000 ffffffff802fe8be May 12 05:20:20 tile01-primary kernel: ffff8804365278a0 ffff8804367edc00 ffffffff807032a0 ffffffff802ffd64 May 12 05:20:20 tile01-primary kernel: ffff880436527778 ffff8804367edc00 ffff8804367edc00 ffff880435cc0038 May 12 05:20:20 tile01-primary kernel: Call Trace: May 12 05:20:20 tile01-primary kernel: [<ffffffff802fe8be>] sysfs_get_dirent+0x24/0x59 May 12 05:20:20 tile01-primary kernel: [<ffffffff802ffd64>] sysfs_remove_group+0x24/0xce May 12 05:20:20 tile01-primary kernel: [<ffffffff803e3b07>] device_del+0x1b/0x1ad May 12 05:20:20 tile01-primary kernel: [<ffffffffa008591d>] sas_port_delete+0x10d/0x129 [scsi_transport_sas] May 12 05:20:20 tile01-primary kernel: [<ffffffffa00b3a6a>] mptsas_delete_expander_siblings+0x3f/0xb5 [mptsas] May 12 05:20:20 tile01-primary kernel: [<ffffffffa00b38d2>] mptsas_expander_delete+0xb6/0x20f [mptsas] May 12 05:20:20 tile01-primary kernel: [<ffffffffa00b3b8e>] mptsas_send_expander_event+0xae/0xc2 [mptsas] May 12 05:20:20 tile01-primary kernel: [<ffffffffa00b5fd4>] mptsas_firmware_event_work+0x1dc/0x200 [mptsas] May 12 05:20:20 tile01-primary kernel: [<ffffffff8024c88d>] run_workqueue+0x7a/0x100 May 12 05:20:20 tile01-primary kernel: [<ffffffff8024c9eb>] worker_thread+0xd8/0xe7 May 12 05:20:20 tile01-primary kernel: [<ffffffff8024f9e7>] kthread+0x47/0x73 May 12 05:20:20 tile01-primary kernel: [<ffffffff8020cf79>] child_rip+0xa/0x11 May 12 05:20:20 tile01-primary kernel: May 12 05:20:20 tile01-primary kernel: May 12 05:20:20 tile01-primary kernel: Code: c7 10 0d 6f 80 e8 bf c8 19 00 5a 5b 5d 41 5c 41 5d 41 5e 31 c0 41 5f c3 48 c7 45 38 ff ff ff 7f eb dc 55 48 89 f5 53 48 83 ec 08 <48> 8b 5f 28 eb 14 48 8b 7b 18 48 89 ee e8 50 52 06 00 85 c0 74 May 12 05:20:20 tile01-primary kernel: RIP [<ffffffff802fe7c2>] sysfs_find_dirent+0x9/0x2f May 12 05:20:20 tile01-primary kernel: RSP <ffff880434479c00> May 12 05:20:20 tile01-primary kernel: CR2: 0000000000000028 ------------------------>8 Cut Here 8<------------------------ The system needed a reset to recover due to so many processes blocking trying to access the devices and related processes. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- 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