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Bug 232340

Summary: INFO: inconsistent lock state 2.6.20-1.2986.fc7 serial8250_backup_timeout
Product: [Fedora] Fedora Reporter: Orion Poplawski <orion>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED WORKSFORME QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhide   
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2007-10-17 20:37:41 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Description Orion Poplawski 2007-03-14 20:22:27 UTC
On a Dell PowerEdge 2650:

<4>[ INFO: inconsistent lock state ]
<4>2.6.20-1.2986.fc7 #1
<4>---------------------------------
<4>inconsistent {hardirq-on-W} -> {in-hardirq-W} usage.
<4>swapper/0 [HC1[1]:SC0[0]:HE0:SE1] takes:
<4> (&port_lock_key){++..}, at: [<c05580ca>] serial8250_interrupt+0x4a/0xe0
<4>{hardirq-on-W} state was registered at:
<4>  [<c0440085>] __lock_acquire+0x448/0xba9
<4>  [<c0440bd8>] lock_acquire+0x56/0x6f
<4>  [<c060edf1>] _spin_lock+0x2b/0x38
<4>  [<c0557a6f>] serial8250_backup_timeout+0x6d/0xe8
<4>  [<c042c91c>] run_timer_softirq+0x121/0x189
<4>  [<c0429e13>] __do_softirq+0x6f/0xe2
<4>  [<c0407a74>] do_softirq+0x61/0xd0
<4>  [<ffffffff>] 0xffffffff
<4>irq event stamp: 274386
<4>hardirqs last  enabled at (274385): [<c0403de2>] default_idle+0x3e/0x59
<4>hardirqs last disabled at (274386): [<c0406064>] common_interrupt+0x24/0x40
<4>softirqs last  enabled at (274376): [<c0429e80>] __do_softirq+0xdc/0xe2
<4>softirqs last disabled at (274359): [<c0407a74>] do_softirq+0x61/0xd0
<4>
<4>other info that might help us debug this:
<4>1 lock held by swapper/0:
<4> #0:  (&irq_lists[i].lock){+...}, at: [<c0558095>] serial8250_interrupt+0x15/0xe0
<4>
<4>stack backtrace:
<4> [<c0406842>] show_trace_log_lvl+0x1a/0x2f
<4> [<c0406e01>] show_trace+0x12/0x14
<4> [<c0406e85>] dump_stack+0x16/0x18
<4> [<c043eb7b>] print_usage_bug+0x141/0x14b
<4> [<c043f26a>] mark_lock+0xa2/0x419
<4> [<c043fff6>] __lock_acquire+0x3b9/0xba9
<4> [<c0440bd8>] lock_acquire+0x56/0x6f
<4> [<c060edf1>] _spin_lock+0x2b/0x38
<4> [<c05580ca>] serial8250_interrupt+0x4a/0xe0
<4> [<c04567aa>] handle_IRQ_event+0x1a/0x46
<4> [<c045789a>] handle_fasteoi_irq+0x7d/0xb6
<4> [<c0407b94>] do_IRQ+0xb1/0xd9

Comment 1 Dave Jones 2007-04-23 16:30:14 UTC
Are you still seeing this with the current builds ?

Comment 2 Orion Poplawski 2007-04-23 16:38:14 UTC
*** Bug 237515 has been marked as a duplicate of this bug. ***

Comment 3 Orion Poplawski 2007-04-23 16:39:24 UTC
Yup, just filed a duplicate by accident.

<4>=================================
<4>[ INFO: inconsistent lock state ]
<4>2.6.20-1.3094.fc7 #1
<4>---------------------------------
<4>inconsistent {hardirq-on-W} -> {in-hardirq-W} usage.
<4>swapper/0 [HC1[1]:SC0[0]:HE0:SE1] takes:
<4> (&port_lock_key){++..}, at: [<c0558f96>] serial8250_interrupt+0x4a/0xe0
<4>{hardirq-on-W} state was registered at:
<4>  [<c044021d>] __lock_acquire+0x448/0xba9
<4>  [<c0440d70>] lock_acquire+0x56/0x6f
<4>  [<c060ffd1>] _spin_lock+0x2b/0x38
<4>  [<c055893b>] serial8250_backup_timeout+0x6d/0xe8
<4>  [<c042c972>] run_timer_softirq+0x121/0x189
<4>  [<c0429dfb>] __do_softirq+0x6f/0xe2
<4>  [<c0407a64>] do_softirq+0x61/0xd0
<4>  [<ffffffff>] 0xffffffff
<4>irq event stamp: 332718
<4>hardirqs last  enabled at (332717): [<c0403dde>] default_idle+0x3e/0x59
<4>hardirqs last disabled at (332718): [<c0406054>] common_interrupt+0x24/0x40
<4>softirqs last  enabled at (332708): [<c0429e68>] __do_softirq+0xdc/0xe2
<4>softirqs last disabled at (332691): [<c0407a64>] do_softirq+0x61/0xd0
<4>
<4>other info that might help us debug this:
<4>1 lock held by swapper/0:
<4> #0:  (&irq_lists[i].lock){+...}, at: [<c0558f61>] serial8250_interrupt+0x15/0xe0
<4>
<4>stack backtrace:
<4> [<c0406832>] show_trace_log_lvl+0x1a/0x2f
<4> [<c0406df1>] show_trace+0x12/0x14
<4> [<c0406e75>] dump_stack+0x16/0x18
<4> [<c043ed13>] print_usage_bug+0x141/0x14b
<4> [<c043f402>] mark_lock+0xa2/0x419
<4> [<c044018e>] __lock_acquire+0x3b9/0xba9
<4> [<c0440d70>] lock_acquire+0x56/0x6f
<4> [<c060ffd1>] _spin_lock+0x2b/0x38
<4> [<c0558f96>] serial8250_interrupt+0x4a/0xe0
<4> [<c045699a>] handle_IRQ_event+0x1a/0x46
<4> [<c0457a8a>] handle_fasteoi_irq+0x7d/0xb6
<4> [<c0407b84>] do_IRQ+0xb1/0xd9
<4> =======================


Comment 4 Orion Poplawski 2007-10-17 20:37:41 UTC
No longer testing on this hardware, not seeing anywhere else.