- It seems that people have been busy creating the need for this. I had to
apply over sixty patches to this tree to fix post-2.6.20-rc4-mm1 compilation
errors. And a number of patches were dropped due to no-compile or to
runtime errors. Heaven knows how many runtime bugs were added.
What looks to me like it might be another cfq problem? Not confied to
XFS this time.
http://test.kernel.org/abat/68514/debug/console.log
RIP: 0010:[<ffffffff80321d34>] [<ffffffff80321d34>]
cfq_dispatch_requests+0xaf/0x48c
RSP: 0018:ffff81003465d9e8 EFLAGS: 00010002
RAX: ffff81003ebac200 RBX: 0000000000000000 RCX: ffff81003eed5200
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffffffff
RBP: ffff81003eed5200 R08: ffffffff8031a363 R09: 0000000000002000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 00002affc43a86f0(0000) GS:ffff81003ee37cc0(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 000055555556d026 CR3: 00000000346c7000 CR4: 00000000000006e0
Process smartd (pid: 1943, threadinfo ffff81003465c000, task
ffff81003bccc040)
Stack: 0000000000000044 ffff81003e1cb4c0 ffff81003e1ea5e0 ffff81003e1cb4c0
0000000000000000 ffff81003eed5800 ffff81003e1cb4c0 ffffffff803174ed
ffff81003e1ea5e0 ffffffff80317e3d 00000000000000d0 0000000000000002
Call Trace:
[<ffffffff803174ed>] elv_drain_elevator+0x16/0x5d
[<ffffffff80317e3d>] elv_insert+0x4b/0x158
[<ffffffff8031a43d>] blk_execute_rq_nowait+0x6d/0x89
[<ffffffff8031a512>] blk_execute_rq+0xb9/0xe1
[<ffffffff802aa72f>] bio_phys_segments+0xf/0x15
[<ffffffff8031e4db>] sg_io+0x217/0x328
[<ffffffff8045eeb8>] sock_def_readable+0x18/0x6c
[<ffffffff8031ea68>] scsi_cmd_ioctl+0x1bd/0x391
[<ffffffff803df122>] sd_ioctl+0x93/0xc1
[<ffffffff8031c9d8>] blkdev_driver_ioctl+0x5d/0x72
[<ffffffff8031d025>] blkdev_ioctl+0x638/0x693
[<ffffffff804c65f3>] _spin_lock_irqsave+0x9/0xe
[<ffffffff8032707c>] __up_read+0x13/0x8a
[<ffffffff804c863d>] do_page_fault+0x45e/0x7b3
[<ffffffff8045fdaf>] skb_dequeue+0x48/0x50
[<ffffffff802ab382>] block_ioctl+0x1b/0x1f
[<ffffffff80294105>] do_ioctl+0x21/0x6b
[<ffffffff802943b5>] vfs_ioctl+0x266/0x27f
[<ffffffff80294427>] sys_ioctl+0x59/0x7a
[<ffffffff80209bae>] system_call+0x7e/0x83
-
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