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Date: Tue, 25 Mar 2008 13:43:20 -0700
From: Andrew Morton <akpm@...ux-foundation.org>
To: netdev@...r.kernel.org
Cc: bugme-daemon@...zilla.kernel.org, marcus@...ter.se,
Stephen Hemminger <shemminger@...ux-foundation.org>,
"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: [Bugme-new] [Bug 10326] New: inconsistent lock state in
net_rx_action
(switched to email. Please respond via emailed reply-to-all, not via the
bugzilla web interface).
On Tue, 25 Mar 2008 13:21:23 -0700 (PDT)
bugme-daemon@...zilla.kernel.org wrote:
> http://bugzilla.kernel.org/show_bug.cgi?id=10326
>
> Summary: inconsistent lock state in net_rx_action
> Product: Networking
> Version: 2.5
> KernelVersion: 2.6.25-rc6 (git
> a4083c9271e0a697278e089f2c0b9a95363ada0a)
> Platform: All
> OS/Version: Linux
> Tree: Mainline
> Status: NEW
> Severity: normal
> Priority: P1
> Component: Other
> AssignedTo: acme@...stprotocols.net
> ReportedBy: marcus@...ter.se
>
>
> Latest working kernel version: 2.6.24
> Earliest failing kernel version: 2.6.25-rc6 (git
> a4083c9271e0a697278e089f2c0b9a95363ada0a)
A post-2.624 regression.
> Distribution: Debian testing/unstable
> Hardware Environment: LG LE50 Express laptop, i386
> Software Environment: Debian i386, X.org 7.3, KDE 4
>
> Problem Description:
>
> Got this during bootup, somewhere before launching X. It only happened once, I
> have rebooted a few times and didn't reproduce it.
>
> Mar 25 19:48:46 better kernel: =================================
> Mar 25 19:48:46 better kernel: [ INFO: inconsistent lock state ]
> Mar 25 19:48:46 better kernel: 2.6.25-rc6-lg #4
> Mar 25 19:48:46 better kernel: ---------------------------------
> Mar 25 19:48:46 better kernel: inconsistent {in-softirq-W} -> {softirq-on-W}
> usage.
> Mar 25 19:48:46 better kernel: syslogd/2773 [HC0[0]:SC0[0]:HE1:SE1] takes:
> Mar 25 19:48:46 better kernel: (&napi->poll_lock){-+..}, at: [<c03db11c>]
> netpoll_poll+0xbc/0x390
> Mar 25 19:48:46 better kernel: {in-softirq-W} state was registered at:
> Mar 25 19:48:46 better kernel: [<c024171a>] __lock_acquire+0x36a/0x1070
> Mar 25 19:48:46 better kernel: [<c024153f>] __lock_acquire+0x18f/0x1070
> Mar 25 19:48:46 better kernel: [<c024247f>] lock_acquire+0x5f/0x80
> Mar 25 19:48:46 better kernel: [<c03cfafc>] net_rx_action+0xbc/0x1d0
> Mar 25 19:48:46 better kernel: [<c044a9e4>] _spin_lock+0x34/0x40
> Mar 25 19:48:46 better kernel: [<c03cfafc>] net_rx_action+0xbc/0x1d0
> Mar 25 19:48:46 better kernel: [<c03cfafc>] net_rx_action+0xbc/0x1d0
> Mar 25 19:48:46 better kernel: [<c03cfaa0>] net_rx_action+0x60/0x1d0
> Mar 25 19:48:46 better kernel: [<c02254f2>] __do_softirq+0x62/0xc0
> Mar 25 19:48:46 better kernel: [<c0225595>] do_softirq+0x45/0x50
> Mar 25 19:48:46 better kernel: [<c0225797>] irq_exit+0x77/0x80
> Mar 25 19:48:46 better kernel: [<c0211a95>]
> smp_apic_timer_interrupt+0x45/0x80
> Mar 25 19:48:46 better kernel: [<c02058ad>] apic_timer_interrupt+0x29/0x38
> Mar 25 19:48:46 better kernel: [<c02058b7>] apic_timer_interrupt+0x33/0x38
> Mar 25 19:48:46 better kernel: [<c022007b>] __set_personality+0x2b/0x240
> Mar 25 19:48:46 better kernel: [<c0220e51>] release_console_sem+0x191/0x1e0
> Mar 25 19:48:46 better kernel: [<c05751aa>] init_netconsole+0x1da/0x1f0
> Mar 25 19:48:46 better kernel: [<c0558700>] kernel_init+0x90/0x270
> Mar 25 19:48:46 better kernel: [<c0204ecf>] restore_nocheck+0x12/0x15
> Mar 25 19:48:46 better kernel: [<c0240eec>] trace_hardirqs_on+0x9c/0x110
> Mar 25 19:48:46 better kernel: [<c0558670>] kernel_init+0x0/0x270
> Mar 25 19:48:46 better kernel: [<c0558670>] kernel_init+0x0/0x270
> Mar 25 19:48:46 better kernel: [<c0205a23>] kernel_thread_helper+0x7/0x14
> Mar 25 19:48:46 better kernel: [<ffffffff>] 0xffffffff
> Mar 25 19:48:46 better kernel: irq event stamp: 174638
> Mar 25 19:48:46 better kernel: hardirqs last enabled at (174637): [<c0204ecf>]
> restore_nocheck+0x12/0x15
> Mar 25 19:48:46 better kernel: hardirqs last disabled at (174638): [<c044ac65>]
> _spin_lock_irqsave+0x15/0x60
> Mar 25 19:48:46 better kernel: softirqs last enabled at (174636): [<c0225595>]
> do_softirq+0x45/0x50
> Mar 25 19:48:46 better kernel: softirqs last disabled at (174629): [<c0225595>]
> do_softirq+0x45/0x50
> Mar 25 19:48:46 better kernel:
> Mar 25 19:48:46 better kernel: other info that might help us debug this:
> Mar 25 19:48:46 better kernel: 3 locks held by syslogd/2773:
> Mar 25 19:48:46 better kernel: #0: (&tty->atomic_write_lock){--..}, at:
> [<c036c699>] tty_write_lock+0x19/0x50
> Mar 25 19:48:46 better kernel: #1: (target_list_lock){--..}, at: [<c0399c0d>]
> write_msg+0x2d/0xd0
> Mar 25 19:48:46 better kernel: #2: (&napi->poll_lock){-+..}, at: [<c03db11c>]
> netpoll_poll+0xbc/0x390
> Mar 25 19:48:46 better kernel:
> Mar 25 19:48:46 better kernel: stack backtrace:
> Mar 25 19:48:46 better kernel: Pid: 2773, comm: syslogd Not tainted
> 2.6.25-rc6-lg #4
> Mar 25 19:48:46 better kernel: [<c023ff6f>] print_usage_bug+0x15f/0x170
> Mar 25 19:48:46 better kernel: [<c0240bd1>] mark_lock+0x401/0x590
> Mar 25 19:48:46 better kernel: [<c0240d98>] mark_held_locks+0x38/0x70
> Mar 25 19:48:46 better kernel: [<c0398a43>] sky2_poll+0x7a3/0xad0
> Mar 25 19:48:46 better kernel: [<c0240eec>] trace_hardirqs_on+0x9c/0x110
> Mar 25 19:48:46 better kernel: [<c0398a43>] sky2_poll+0x7a3/0xad0
> Mar 25 19:48:46 better kernel: [<c03db11c>] netpoll_poll+0xbc/0x390
> Mar 25 19:48:46 better kernel: [<c044adb2>] _spin_trylock+0x42/0x80
> Mar 25 19:48:46 better kernel: [<c03db0d3>] netpoll_poll+0x73/0x390
> Mar 25 19:48:46 better kernel: [<c03db51f>] netpoll_send_skb+0x12f/0x1d0
> Mar 25 19:48:46 better kernel: [<c0399c7c>] write_msg+0x9c/0xd0
> Mar 25 19:48:46 better kernel: [<c0220bd4>] __call_console_drivers+0x54/0x70
> Mar 25 19:48:46 better kernel: [<c0220d90>] release_console_sem+0xd0/0x1e0
> Mar 25 19:48:46 better kernel: [<c037a8d9>] do_con_write+0x189/0x1a80
> Mar 25 19:48:46 better kernel: [<c0240d98>] mark_held_locks+0x38/0x70
> Mar 25 19:48:46 better kernel: [<c044affc>] _spin_unlock_irqrestore+0x4c/0x60
> Mar 25 19:48:46 better kernel: [<c0240eec>] trace_hardirqs_on+0x9c/0x110
> Mar 25 19:48:46 better kernel: [<c044afe7>] _spin_unlock_irqrestore+0x37/0x60
> Mar 25 19:48:46 better kernel: [<c037c1f7>] con_put_char+0x27/0x30
> Mar 25 19:48:46 better kernel: [<c036e6ed>] opost+0xad/0x220
> Mar 25 19:48:46 better kernel: [<c036f08b>] write_chan+0x1ab/0x350
> Mar 25 19:48:46 better kernel: [<c021a790>] default_wake_function+0x0/0x10
> Mar 25 19:48:46 better kernel: [<c036c87b>] tty_write+0x13b/0x1d0
> Mar 25 19:48:47 better kernel: [<c036eee0>] write_chan+0x0/0x350
> Mar 25 19:48:47 better kernel: [<c02802e3>] do_loop_readv_writev+0x33/0x60
> Mar 25 19:48:47 better kernel: [<c0280d50>] do_readv_writev+0x170/0x180
> Mar 25 19:48:47 better kernel: [<c036c740>] tty_write+0x0/0x1d0
> Mar 25 19:48:47 better kernel: [<c0280d9c>] vfs_writev+0x3c/0x50
> Mar 25 19:48:47 better kernel: [<c0281261>] sys_writev+0x41/0x70
> Mar 25 19:48:47 better kernel: [<c0204de6>] sysenter_past_esp+0x5f/0xa5
> Mar 25 19:48:47 better kernel: =======================
>
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