Hi, I have a board with backplane for SATA disks. Sometimes when I unplug a disk while IO is going on, I get following problem. Has anybody of you experienced this before? Sometimes spinlock owner is kblockd, sometimes it is scsi_eh. sd 7:0:0:0: rejecting I/O to offline device sd 7:0:0:0: rejecting I/O to offline device sd 7:0:0:0: [sda] Result: hostbyte=0x01 driverbyte=0x00 BUG: spinlock recursion on CPU#0, kblockd/0/54 lock: cf53a138, .magic: dead4ead, .owner: kblockd/0/54, .owner_cpu: 0 [<c033af90>] (dump_stack+0x0/0x14) from [<c013f710>] (spin_bug+0x90/0xa4) [<c013f680>] (spin_bug+0x0/0xa4) from [<c013f870>] (_raw_spin_lock+0x50/0x15c) r5:20000013 r4:cf53a138 [<c013f820>] (_raw_spin_lock+0x0/0x15c) from [<c029e390>] (_spin_lock_irqsave+0x2c/0x34) [<c029e364>] (_spin_lock_irqsave+0x0/0x34) from [<c01c0794>] (scsi_end_request+0x94/0xdc) r5:cfffe3e0 r4:cf539e84 [<c01c0700>] (scsi_end_request+0x0/0xdc) from [<c01c0d10>] (scsi_io_completion+0x314/0x330) r8:00000000 r7:cf539e84 r6:00010000 r5:cfffe3e0 r4:00000000 [<c01c09fc>] (scsi_io_completion+0x0/0x330) from [<c01bb744>] (scsi_finish_command+0x84/0x88) [<c01bb6c0>] (scsi_finish_command+0x0/0x88) from [<c01c1394>] (scsi_softirq_done+0xbc/0x114) r6:cfffe3e0 r5:00000005 r4:00000bb8 [<c01c12d8>] (scsi_softirq_done+0x0/0x114) from [<c01282a0>] (blk_done_softirq+0x7c/0x9c) r7:c0373760 r6:0000000a r5:00000001 r4:cfcafcd0 [<c0128224>] (blk_done_softirq+0x0/0x9c) from [<c0053f58>] (__do_softirq+0x64/0xd0) r4:c03737bc [<c0053ef4>] (__do_softirq+0x0/0xd0) from [<c005406c>] (do_softirq+0x4c/0x68) Thanks, prashant -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
