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Date: Mon, 26 Mar 2012 09:51:54 -0700 From: Ben Greear <greearb@...delatech.com> To: netdev <netdev@...r.kernel.org> Subject: Locking bug in 3.0.25, IPv6. 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@...delatech.com> Candela Technologies Inc http://www.candelatech.com -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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