* Re: INFO: possible recursive locking detected dev_deactivate [not found] <c4e36d110807290453h7381adb8l8b8785f434e968ac@mail.gmail.com> @ 2008-07-30 9:47 ` Andrew Morton 2008-07-30 10:01 ` Zdenek Kabelac [not found] ` <20080730024724.519f0662.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org> 0 siblings, 2 replies; 3+ messages in thread From: Andrew Morton @ 2008-07-30 9:47 UTC (permalink / raw) To: Zdenek Kabelac; +Cc: Linux Kernel Mailing List, linux-wireless, netdev (cc's added) On Tue, 29 Jul 2008 13:53:39 +0200 "Zdenek Kabelac" <zdenek.kabelac@gmail.com> wrote: > Hi > > With kernel from yesterdays' git (08/07/28) (sorry I've already > deleted any traces for more precise commit number) - I've just found > the bactrace in the log running already today's 2.6.27-rc1. > > Happened during the reboot of 2.6.26 > As usually T61, 2GB, C2D > > (wlan0): now unmanaged > (wlan0): device state change: 3 -> 1 > (wlan0): cleaning up... > (wlan0): taking down device. > > ============================================= > [ INFO: possible recursive locking detected ] > 2.6.26 #47 > --------------------------------------------- > NetworkManager/2623 is trying to acquire lock: > (_xmit_IEEE80211#2){-...}, at: [<ffffffff812a3cd2>] dev_deactivate+0x82/0x150 > > but task is already holding lock: > (_xmit_IEEE80211#2){-...}, at: [<ffffffff812a3cd2>] dev_deactivate+0x82/0x150 > > other info that might help us debug this: > 2 locks held by NetworkManager/2623: > #0: (rtnl_mutex){--..}, at: [<ffffffff8129ca0a>] rtnetlink_rcv+0x1a/0x40 > #1: (_xmit_IEEE80211#2){-...}, at: [<ffffffff812a3cd2>] > dev_deactivate+0x82/0x150 > > stack backtrace: > Pid: 2623, comm: NetworkManager Not tainted 2.6.26 #47 > > Call Trace: > [<ffffffff81068b4a>] __lock_acquire+0xcea/0x13b0 > [<ffffffff810674fd>] ? mark_held_locks+0x4d/0x90 > [<ffffffff810657a4>] ? get_lock_stats+0x34/0x70 > [<ffffffff812a3cd2>] ? dev_deactivate+0x82/0x150 > [<ffffffff810692a6>] lock_acquire+0x96/0xe0 > [<ffffffff812a3cd2>] ? dev_deactivate+0x82/0x150 > [<ffffffff81315161>] _spin_lock+0x31/0x60 > [<ffffffff812a3cd2>] dev_deactivate+0x82/0x150 > [<ffffffff81292885>] dev_close+0x65/0xc0 > [<ffffffffa013a9d9>] ieee80211_stop+0x339/0x4e0 [mac80211] > [<ffffffff81292896>] dev_close+0x76/0xc0 > [<ffffffff81292461>] dev_change_flags+0xa1/0x1e0 > [<ffffffff8129b774>] do_setlink+0x214/0x3a0 > [<ffffffff81318c60>] ? sub_preempt_count+0x80/0x120 > [<ffffffff81314e40>] ? _read_unlock+0x30/0x60 > [<ffffffff8129bacd>] rtnl_setlink+0x10d/0x150 > [<ffffffff8129cbbd>] rtnetlink_rcv_msg+0x18d/0x240 > [<ffffffff8129ca30>] ? rtnetlink_rcv_msg+0x0/0x240 > [<ffffffff812a77e9>] netlink_rcv_skb+0x89/0xb0 > [<ffffffff8129ca19>] rtnetlink_rcv+0x29/0x40 > [<ffffffff812a720d>] netlink_unicast+0x2cd/0x2e0 > [<ffffffff8128b01e>] ? __alloc_skb+0x6e/0x150 > [<ffffffff812a7424>] netlink_sendmsg+0x204/0x300 > [<ffffffff81314e5e>] ? _read_unlock+0x4e/0x60 > [<ffffffff812827d7>] sock_sendmsg+0x127/0x140 > [<ffffffff81057120>] ? autoremove_wake_function+0x0/0x40 > [<ffffffff810677ad>] ? trace_hardirqs_on+0xd/0x10 > [<ffffffff8106773b>] ? trace_hardirqs_on_caller+0x14b/0x1b0 > [<ffffffff812835f7>] ? move_addr_to_kernel+0x57/0x60 > [<ffffffff8128c04f>] ? verify_iovec+0x3f/0xe0 > [<ffffffff81282979>] sys_sendmsg+0x189/0x320 > [<ffffffff812836fd>] ? sys_sendto+0xfd/0x120 > [<ffffffff810e1a8c>] ? d_free+0x6c/0x80 > [<ffffffff810cec01>] ? __fput+0x171/0x1c0 > [<ffffffff8106773b>] ? trace_hardirqs_on_caller+0x14b/0x1b0 > [<ffffffff813148d6>] ? trace_hardirqs_on_thunk+0x3a/0x3f > [<ffffffff8100c5bb>] system_call_fastpath+0x16/0x1b > > iwl3945 0000:03:00.0: PCI INT A disabled ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: INFO: possible recursive locking detected dev_deactivate 2008-07-30 9:47 ` INFO: possible recursive locking detected dev_deactivate Andrew Morton @ 2008-07-30 10:01 ` Zdenek Kabelac [not found] ` <20080730024724.519f0662.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org> 1 sibling, 0 replies; 3+ messages in thread From: Zdenek Kabelac @ 2008-07-30 10:01 UTC (permalink / raw) To: Andrew Morton; +Cc: Linux Kernel Mailing List, linux-wireless, netdev 2008/7/30 Andrew Morton <akpm@linux-foundation.org>: > > (cc's added) > > On Tue, 29 Jul 2008 13:53:39 +0200 "Zdenek Kabelac" <zdenek.kabelac@gmail.com> wrote: > >> Hi >> >> With kernel from yesterdays' git (08/07/28) (sorry I've already >> deleted any traces for more precise commit number) - I've just found >> the bactrace in the log running already today's 2.6.27-rc1. >> >> Happened during the reboot of 2.6.26 >> As usually T61, 2GB, C2D >> >> ============================================= >> [ INFO: possible recursive locking detected ] >> 2.6.26 #47 Update - happens with 2.6.27-rc1 (commit: 6e86841d05f371b5b9b86ce76c02aaee83352298) Zdenek >> --------------------------------------------- >> NetworkManager/2623 is trying to acquire lock: >> (_xmit_IEEE80211#2){-...}, at: [<ffffffff812a3cd2>] dev_deactivate+0x82/0x150 >> >> but task is already holding lock: >> (_xmit_IEEE80211#2){-...}, at: [<ffffffff812a3cd2>] dev_deactivate+0x82/0x150 >> >> other info that might help us debug this: >> 2 locks held by NetworkManager/2623: >> #0: (rtnl_mutex){--..}, at: [<ffffffff8129ca0a>] rtnetlink_rcv+0x1a/0x40 >> #1: (_xmit_IEEE80211#2){-...}, at: [<ffffffff812a3cd2>] >> dev_deactivate+0x82/0x150 >> >> stack backtrace: >> Pid: 2623, comm: NetworkManager Not tainted 2.6.26 #47 >> >> Call Trace: >> [<ffffffff81068b4a>] __lock_acquire+0xcea/0x13b0 >> [<ffffffff810674fd>] ? mark_held_locks+0x4d/0x90 >> [<ffffffff810657a4>] ? get_lock_stats+0x34/0x70 >> [<ffffffff812a3cd2>] ? dev_deactivate+0x82/0x150 >> [<ffffffff810692a6>] lock_acquire+0x96/0xe0 >> [<ffffffff812a3cd2>] ? dev_deactivate+0x82/0x150 >> [<ffffffff81315161>] _spin_lock+0x31/0x60 >> [<ffffffff812a3cd2>] dev_deactivate+0x82/0x150 >> [<ffffffff81292885>] dev_close+0x65/0xc0 >> [<ffffffffa013a9d9>] ieee80211_stop+0x339/0x4e0 [mac80211] >> [<ffffffff81292896>] dev_close+0x76/0xc0 >> [<ffffffff81292461>] dev_change_flags+0xa1/0x1e0 >> [<ffffffff8129b774>] do_setlink+0x214/0x3a0 >> [<ffffffff81318c60>] ? sub_preempt_count+0x80/0x120 >> [<ffffffff81314e40>] ? _read_unlock+0x30/0x60 >> [<ffffffff8129bacd>] rtnl_setlink+0x10d/0x150 >> [<ffffffff8129cbbd>] rtnetlink_rcv_msg+0x18d/0x240 >> [<ffffffff8129ca30>] ? rtnetlink_rcv_msg+0x0/0x240 >> [<ffffffff812a77e9>] netlink_rcv_skb+0x89/0xb0 >> [<ffffffff8129ca19>] rtnetlink_rcv+0x29/0x40 >> [<ffffffff812a720d>] netlink_unicast+0x2cd/0x2e0 >> [<ffffffff8128b01e>] ? __alloc_skb+0x6e/0x150 >> [<ffffffff812a7424>] netlink_sendmsg+0x204/0x300 >> [<ffffffff81314e5e>] ? _read_unlock+0x4e/0x60 >> [<ffffffff812827d7>] sock_sendmsg+0x127/0x140 >> [<ffffffff81057120>] ? autoremove_wake_function+0x0/0x40 >> [<ffffffff810677ad>] ? trace_hardirqs_on+0xd/0x10 >> [<ffffffff8106773b>] ? trace_hardirqs_on_caller+0x14b/0x1b0 >> [<ffffffff812835f7>] ? move_addr_to_kernel+0x57/0x60 >> [<ffffffff8128c04f>] ? verify_iovec+0x3f/0xe0 >> [<ffffffff81282979>] sys_sendmsg+0x189/0x320 >> [<ffffffff812836fd>] ? sys_sendto+0xfd/0x120 >> [<ffffffff810e1a8c>] ? d_free+0x6c/0x80 >> [<ffffffff810cec01>] ? __fput+0x171/0x1c0 >> [<ffffffff8106773b>] ? trace_hardirqs_on_caller+0x14b/0x1b0 >> [<ffffffff813148d6>] ? trace_hardirqs_on_thunk+0x3a/0x3f >> [<ffffffff8100c5bb>] system_call_fastpath+0x16/0x1b >> >> iwl3945 0000:03:00.0: PCI INT A disabled > > ^ permalink raw reply [flat|nested] 3+ messages in thread
[parent not found: <20080730024724.519f0662.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>]
* Re: INFO: possible recursive locking detected dev_deactivate [not found] ` <20080730024724.519f0662.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org> @ 2008-07-30 10:04 ` David Miller 0 siblings, 0 replies; 3+ messages in thread From: David Miller @ 2008-07-30 10:04 UTC (permalink / raw) To: akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b Cc: zdenek.kabelac-Re5JQEeQqe8AvxtiuMwx3w, linux-kernel-u79uwXL29TY76Z2rM5mHXA, linux-wireless-u79uwXL29TY76Z2rM5mHXA, netdev-u79uwXL29TY76Z2rM5mHXA From: Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org> Date: Wed, 30 Jul 2008 02:47:24 -0700 > > (cc's added) Well known problem and one that is being worked on. The warnings are harmless, please ignore them for now. -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html ^ permalink raw reply [flat|nested] 3+ messages in thread
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2008-07-30 9:47 ` INFO: possible recursive locking detected dev_deactivate Andrew Morton
2008-07-30 10:01 ` Zdenek Kabelac
[not found] ` <20080730024724.519f0662.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2008-07-30 10:04 ` David Miller
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