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Message-ID: <Pine.LNX.4.64.0803191608500.25941@artax.karlin.mff.cuni.cz>
Date: Wed, 19 Mar 2008 16:15:23 +0100 (CET)
From: Mikulas Patocka <mikulas@...ax.karlin.mff.cuni.cz>
To: linux-kernel@...r.kernel.org
Subject: APM lockups since 2.6.25
Hi
I have an old notebook with APM and I am experiencing occasional APMD
lockups after resume, with kernels 2.6.25rc1 snd 2.6.25rc3. They didn't
happen with 2.6.24 or before.
The bug happens about once a week or so.
If you have any idea how to debug it, you can send me a test code.
The config is attached, the machine has only a text console, no windows.
Mar 19 04:03:45 gerlinda kernel: INFO: task apmd:2059 blocked for more
than 120 seconds.
Mar 19 04:03:45 gerlinda kernel: "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Mar 19 04:03:45 gerlinda kernel: apmd D c7af3720 2556 2059
1
Mar 19 04:03:45 gerlinda kernel: c7b64eb8 00000082 c78e2148
c7af3720 c0147f50 00000002 c0268415 ffffffff
Mar 19 04:03:45 gerlinda kernel: c0309bc0 c78e2000 00000002
c0267c95 c7b64ee4 c0309bc4 c0309be0 c74034f8
Mar 19 04:03:45 gerlinda kernel: c0309bc0 00000000 00000000
00000002 c0267d9d c0309be0 c0309be0 c78e2000
Mar 19 04:03:45 gerlinda kernel: Call Trace:
Mar 19 04:03:45 gerlinda kernel: [<c0147f50>] __writepage+0x0/0x30
Mar 19 04:03:45 gerlinda kernel: [<c0268415>] _spin_lock_irq+0x35/0x40
Mar 19 04:03:45 gerlinda kernel: [<c0267c95>]
rwsem_down_failed_common+0x75/0x160
Mar 19 04:03:45 gerlinda kernel: [<c0267d9d>]
rwsem_down_write_failed+0x1d/0x30Mar 19 04:03:45 gerlinda kernel:
[<c0267e16>] call_rwsem_down_write_failed+0x6/0x8
Mar 19 04:03:45 gerlinda kernel: [<c026753c>] down_write+0x4c/0x60
Mar 19 04:03:45 gerlinda kernel: [<c01f6e22>] device_suspend+0x22/0x280
Mar 19 04:03:45 gerlinda kernel: [<c01f6e22>] device_suspend+0x22/0x280
Mar 19 04:03:45 gerlinda kernel: [<c013cc42>] pm_send_all+0x62/0xc0
Mar 19 04:03:45 gerlinda kernel: [<c88597b7>] suspend+0x37/0x140 [apm]
Mar 19 04:03:45 gerlinda kernel: [<c885a6a4>] do_ioctl+0x144/0x170 [apm]
Mar 19 04:03:45 gerlinda kernel: [<c0268985>] lock_kernel+0x25/0x50
Mar 19 04:03:45 gerlinda kernel: [<c01708f8>] vfs_ioctl+0x78/0x90
Mar 19 04:03:45 gerlinda kernel: [<c017096c>] do_vfs_ioctl+0x5c/0x2b0
Mar 19 04:03:45 gerlinda kernel: [<c0268224>] _spin_lock+0x34/0x40
Mar 19 04:03:45 gerlinda kernel: [<c0170bfd>] sys_ioctl+0x3d/0x70
Mar 19 04:03:45 gerlinda kernel: [<c010305e>] syscall_call+0x7/0xb
Mar 19 04:03:45 gerlinda kernel: =======================
Mar 19 04:03:45 gerlinda kernel: no locks held by apmd/2059.
--- the lockup happens in down_write(&pm_sleep_rwsem); in device_suspend()
loaded modules:
Module Size Used by
dm_loop 12004 1
8250 24356 2
serial_core 23096 1 8250
pcspkr 3104 0
psmouse 40256 0
apm 21720 1
parport_pc 36132 1
plip 15880 0
parport 40328 2 parport_pc,plip
ide_cd_mod 36448 0
cdrom 36416 1 ide_cd_mod
ohci_hcd 24500 0
usbcore 148624 1 ohci_hcd
nls_iso8859_2 4608 1
nls_cp852 4864 1
vfat 13344 1
fat 51956 1 vfat
nls_base 8000 4 nls_iso8859_2,nls_cp852,vfat,fat
dm_snapshot 19364 0
dm_mirror 29072 0
dm_mod 59788 7 dm_loop,dm_snapshot,dm_mirror
rtc 13468 0
unix 29692 20
Mikulas
View attachment "gerlinda.config" of type "TEXT/PLAIN" (44015 bytes)
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