Tejun Heo wrote: > SCSI EH thread is stopped during SCSI host release which can happen > after ATA host detach and free. This leads to the following oops. > > general protection fault: 0000 [1] PREEMPT SMP > CPU 0 > Modules linked in: ahci libata > Pid: 98, comm: kblockd/0 Not tainted 2.6.23-rc2-work #19 > RIP: 0010:[<ffffffff80242aa7>] [<ffffffff80242aa7>] run_workqueue+0xb7/0x190 > RSP: 0018:ffff81001fd2be80 EFLAGS: 00010087 > RAX: 6b6b6b6b6b6b6b6b RBX: ffff81001fae4a18 RCX: 1240000000000000 > RDX: 6b6b6b6b6b6b6b6b RSI: 9200000000000000 RDI: ffff81001fc1b930 > RBP: ffff81001fd2beb0 R08: fffffffffedc0049 R09: 0000000000000000 > R10: ffffffff80242a09 R11: 0000000000000000 R12: ffff81001fae4a10 > R13: ffff81001fc1b930 R14: 6b6b6b6b6b6b6b6b R15: ffff81001fc1b960 > FS: 0000000000000000(0000) GS:ffffffff808cb000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b > CR2: 00002b531964d890 CR3: 0000000000201000 CR4: 00000000000006e0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > Process kblockd/0 (pid: 98, threadinfo ffff81001fd2a000, task ffff81001fe78140) > Stack: ffff81001fd2beb0 ffff81001fc1b970 ffff81001fc1b930 ffff81001fd2bec0 > ffff81001fc1b960 0000000000000000 ffff81001fd2bf10 ffffffff8024385a > 0000000000000000 ffff81001fe78140 ffffffff80247450 ffff81001fd2bed8 > Call Trace: > [<ffffffff8024385a>] worker_thread+0xca/0x130 > [<ffffffff80247450>] autoremove_wake_function+0x0/0x40 > [<ffffffff80243790>] worker_thread+0x0/0x130 > [<ffffffff8024706d>] kthread+0x4d/0x80 > [<ffffffff8020cbf8>] child_rip+0xa/0x12 > [<ffffffff8020c2e0>] restore_args+0x0/0x30 > [<ffffffff80247178>] kthreadd+0xd8/0x160 > [<ffffffff80247020>] kthread+0x0/0x80 > [<ffffffff8020cbee>] child_rip+0x0/0x12 > > This patch clears ATA_PFLAG_RUNNING after final freeze and moves > ATA_PFLAG_RUNNING check into ata_eh_set_pending() to cover all EH > schedule functions. Oops, please hold a bit. After 30min of testing, it happened again. It seems it needs more fixing. I'll write when I know more. Thanks. -- tejun - 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
