System crashed with error - 'general protection fault: 0000 [#1] SMP'
Issue
- Kernel crash on concurrent access to IBM 3592 tapes with lin_tape driver
-
The system was crashed while attempting concurrent IO operation on tape devices using
lin_tape
driver. At the time of system crash, following error messages were logged on system console:lin_tape: tape_send_scsi_io entry lin_tape: tape_execute_scsi_command entry: 0x5f general protection fault: 0000 [#1] SMP last sysfs file: /sys/module/sg/initstate CPU 8 [...] Process mt (pid: 5548, threadinfo ffff881509814000, task ffff8815a4905540) Stack: dead000000200200 ffff88204f4a3428 ffff881509815818 ffff8813de224b60 <d> ffff881509815828 0000000000000008 0000000000000001 ffff8818c110e7a0 <d> ffff8818c110e7a0 0000000000000000 0000000000000000 00000000000000ff Call Trace: [<ffffffff811b9619>] bio_free_map_data+0x19/0x40 [<ffffffff811ba36e>] bio_uncopy_user+0x5e/0x80 [<ffffffff8126244b>] __blk_rq_unmap_user+0x1b/0x30 [<ffffffff81262491>] blk_rq_unmap_user+0x31/0x70 [<ffffffffa0486e6e>] lin_tape_blk_rq+0x4de/0x560 [lin_tape] [<ffffffffa0486f38>] tape_execute_scsi_command+0x48/0xc0 [lin_tape] [<ffffffffa048c30f>] tape_send_scsi_io+0x1ff/0x490 [lin_tape] [<ffffffff8106ecff>] ? release_console_sem+0x1cf/0x220 [...]
Environment
- Red Hat Enterprise Linux 6
- IBM 03592E07 tape devices
lin_tape
driver
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