On 08/31/12 20:00, [email protected] wrote:
> ------------[ cut here ]------------
> WARNING: at block/genhd.c:1466 __disk_unblock_events+0x10f/0x120()
> Pid: 17238, comm: scsi_id Not tainted 3.2.8-pserver #1
> Call Trace:
> [<ffffffff81048dbb>] ? warn_slowpath_common+0x7b/0xc0
> [<ffffffff813879bf>] ? __disk_unblock_events+0x10f/0x120
> [<ffffffff81162b30>] ? __blkdev_get+0x190/0x410
> [<ffffffff811630c0>] ? blkdev_get+0x310/0x310
> [<ffffffff81162dfb>] ? blkdev_get+0x4b/0x310
> [<ffffffff811630c0>] ? blkdev_get+0x310/0x310
> [<ffffffff8112d513>] ? __dentry_open+0x263/0x370
> [<ffffffff8113a0fe>] ? path_get+0x1e/0x30
> [<ffffffff8113b4a0>] ? do_last+0x3e0/0x800
> [<ffffffff8113c21b>] ? path_openat+0xdb/0x400
> [<ffffffff8113c66d>] ? do_filp_open+0x4d/0xc0
> [<ffffffff81148c13>] ? alloc_fd+0x43/0x130
> [<ffffffff8112d915>] ? do_sys_open+0x105/0x1e0
> [<ffffffff8165d512>] ? system_call_fastpath+0x16/0x1b
> ---[ end trace 4edc2747f936431c ]---
That's the "if (WARN_ON_ONCE(ev->block <= 0))" in kernel version 3.2
that you hit, isn't it ? That's not caused by ib_srp but by a race in
the genhd layer. Please have a look at commit 9f53d2fe ("block: fix
__blkdev_get and add_disk race condition").
Bart.
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