From: Miles Lane <miles.lane@gmail.com>
To: LKML <linux-kernel@vger.kernel.org>, dri-devel@lists.sourceforge.net
Subject: 2.6.32-rc5-git1 -- 2 locks held by cat -- running "find /sys | head -c 4" --> system hang
Date: Tue, 20 Oct 2009 12:11:10 -0400 [thread overview]
Message-ID: <4ADDE11E.6030502@gmail.com> (raw)
2 locks held by cat/4179:
#0: (&p->lock){+.+.+.}, at: [<c10a3884>] seq_read+0x25/0x315
#1: (&dev_priv->mm.active_list_lock){+.+...}, at: [<c119a854>] i915_batchbuffer_info+0x2b/0x124
Pid: 4179, comm: cat Not tainted 2.6.32-rc5-git1 #2
Call Trace:
[<c104874f>] ? __debug_show_held_locks+0x1e/0x20
[<c1023fb0>] __might_sleep+0xf0/0xf7
[<c101c393>] kmap+0x17/0x58
[<c119a8d6>] i915_batchbuffer_info+0xad/0x124
[<c10a39bf>] seq_read+0x160/0x315
[<c108fb8c>] ? rw_verify_area+0x98/0xbb
[<c10a385f>] ? seq_read+0x0/0x315
[<c1090331>] vfs_read+0x75/0xa9
[<c10903f9>] sys_read+0x3b/0x5d
[<c1002a8f>] sysenter_do_call+0x12/0x36
next reply other threads:[~2009-10-20 16:11 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-20 16:11 Miles Lane [this message]
2009-10-20 16:29 ` [PATCH] drm/i915: Avoid potential sleep whilst holding spinlock Chris Wilson
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