linux-kernel - BUG: warning at drivers/pci/msi.c:680/pci_enable_msi() - DWARF2 unwinder stuck at syscall

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Date:	Mon, 9 Oct 2006 15:24:30 +0200
From:	Martin Lorenz <martin@...enz.eu.org>
To:	linux-kernel@...r.kernel.org
Subject: BUG: warning at drivers/pci/msi.c:680/pci_enable_msi() - DWARF2 unwinder stuck at syscall_call+0x7/0xb

I currently play around with various options to localize my acpi problem and
found the following recurring BUG warning:

Oct  9 15:11:55 gimli kernel: [ 2671.631000] BUG: warning at drivers/pci/msi.c:680/pci_enable_msi()
Oct  9 15:11:55 gimli kernel: [ 2671.632000]  [<c0103bd9>] dump_trace+0x69/0x1af
Oct  9 15:11:55 gimli kernel: [ 2671.632000]  [<c0103d37>] show_trace_log_lvl+0x18/0x2c
Oct  9 15:11:55 gimli kernel: [ 2671.632000]  [<c01043d6>] show_trace+0xf/0x11
Oct  9 15:11:55 gimli kernel: [ 2671.632000]  [<c01044d9>] dump_stack+0x15/0x17
Oct  9 15:11:55 gimli kernel: [ 2671.632000]  [<c0211c5e>] pci_enable_msi+0x78/0x22e
Oct  9 15:11:55 gimli kernel: [ 2671.634000]  [<c0275d8d>] e1000_open+0x64/0x176
Oct  9 15:11:55 gimli kernel: [ 2671.636000]  [<c02b8ec1>] dev_open+0x2b/0x62
Oct  9 15:11:55 gimli kernel: [ 2671.638000]  [<c02b79cf>] dev_change_flags+0x47/0xe4
Oct  9 15:11:55 gimli kernel: [ 2671.640000]  [<c02eba8b>] devinet_ioctl+0x252/0x556
Oct  9 15:11:55 gimli kernel: [ 2671.643000]  [<c02aec3a>] sock_ioctl+0x19e/0x1c2
Oct  9 15:11:55 gimli kernel: [ 2671.645000]  [<c0169a3f>] do_ioctl+0x1f/0x62
Oct  9 15:11:55 gimli kernel: [ 2671.646000]  [<c0169cc7>] vfs_ioctl+0x245/0x257
Oct  9 15:11:55 gimli kernel: [ 2671.647000]  [<c0169d25>] sys_ioctl+0x4c/0x67
Oct  9 15:11:55 gimli kernel: [ 2671.647000]  [<c0102dc3>] syscall_call+0x7/0xb
Oct  9 15:11:55 gimli kernel: [ 2671.647000] DWARF2 unwinder stuck at syscall_call+0x7/0xb
Oct  9 15:11:55 gimli kernel: [ 2671.647000]
Oct  9 15:11:55 gimli kernel: [ 2671.647000] Leftover inexact backtrace:
Oct  9 15:11:55 gimli kernel: [ 2671.647000]
Oct  9 15:11:55 gimli kernel: [ 2671.648000]  =======================

this one happened when undocking for the second time in sequence but I found
the same several times in the log in conjunction with suspend2ram 

it never happens on first suspend (or dock/undock) after booting but very
often on second sometimes not before third time 

when it has occured I can still suspend and resume, but after that no 
ACPI events are generated anymore


gruss
  mlo
--
Dipl.-Ing. Martin Lorenz

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