From: Ben Greear <greearb@candelatech.com>
To: netdev <netdev@vger.kernel.org>
Subject: Locking bug in 3.0.25, IPv6.
Date: Mon, 26 Mar 2012 09:51:54 -0700 [thread overview]
Message-ID: <4F709EAA.6040700@candelatech.com> (raw)
Has anyone seen this in 3.0.25? My kernel has some other patches
applied, but we did not see this before 3.0.24.
BUG: sleeping function called from invalid context at /home/greearb/git/linux-3.0.dev.y/mm/memory.c:3904
================================================
[ BUG: lock held when returning to user space! ]
------------------------------------------------
ip/6696 is leaving the kernel with locks still held!
1 lock held by ip/6696:
#0: (rcu_read_lock){.+.+..}, at: [<ffffffffa03051c4>] rcu_read_lock+0x0/0x35 [ipv6]
in_atomic(): 0, irqs_disabled(): 0, pid: 6694, name: ip
INFO: lockdep is turned off.
Pid: 6694, comm: ip Tainted: G C 3.0.25+ #1
Call Trace:
[<ffffffff8103e479>] __might_sleep+0x111/0x115
[<ffffffff810c98bf>] might_fault+0x2f/0x9e
[<ffffffff8138698e>] ? copy_from_user+0x2a/0x2c
[<ffffffff810c98de>] ? might_fault+0x4e/0x9e
[<ffffffff8137cc90>] move_addr_to_user+0x21/0x8e
[<ffffffff8137ce7c>] __sys_recvmsg+0x17f/0x21e
[<ffffffff810634a8>] ? up_read+0x1e/0x36
[<ffffffff810fc06e>] ? fcheck_files+0xb7/0xee
[<ffffffff810fc191>] ? fget_light+0x35/0xac
[<ffffffff810d0023>] ? remove_vma+0x7a/0x82
[<ffffffff8137d620>] sys_recvmsg+0x3d/0x5b
[<ffffffff8144f092>] system_call_fastpath+0x16/0x1b
--
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc http://www.candelatech.com
next reply other threads:[~2012-03-26 16:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-26 16:51 Ben Greear [this message]
2012-03-26 18:41 ` Locking bug in 3.0.25, IPv6 Ben Greear
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