Hi,
I'm running debian unstable on my PC. With kernel 2.6.5-rc3 the shutdown hang
while unloading ALSA modules. PC is alive (ie. responds to ping and to SysRq).
This is from lsmod:
snd_pcm_oss 51492 0
snd_mixer_oss 18752 1 snd_pcm_oss
snd_intel8x0 32004 0
snd_ac97_codec 59268 1 snd_intel8x0
snd_pcm 95204 2 snd_pcm_oss,snd_intel8x0
snd_timer 25668 1 snd_pcm
snd_page_alloc 11140 2 snd_intel8x0,snd_pcm
snd_mpu401_uart 7360 1 snd_intel8x0
snd_rawmidi 24736 1 snd_mpu401_uart
snd_seq_device 8264 1 snd_rawmidi
snd 54884 9
snd_pcm_oss,snd_mixer_oss,snd_intel8x0,snd_ac97_codec,snd_pcm,snd_timer,snd_mpu401_uart,snd_rawmidi,snd_seq_device
Alsa script is unloading everything:
for i in $(lsmod | awk '/^snd/ {print $1}'); do
$rmmod $i >/dev/null 2>&1 || :
done
I can reproduce using "rmmod snd_intel8x0", and this is the relevant part of SysRq-T:
rmmod D DDFC6840 0 20120 3843 (NOTLB)
d8e8bef0 00000086 dd6176c0 ddfc6840 dccf9e40 d8e8bed4 c016e150 4075837a
39adce53 dca940c0 dca940e0 000f4240 d2175e40 000f45af dd472d00 dd472ec0
e09cc60c 00000246 d8e8a000 d8e8bf2c c01060a5 e09cc614 dd472d00 00000001
Call Trace:
[<c016e150>] simple_unlink+0x40/0x50
[<c01060a5>] __down+0x85/0x100
[<c0119c80>] default_wake_function+0x0/0x10
[<c01062bf>] __down_failed+0xb/0x14
[<c02314f0>] .text.lock.driver+0x5/0x15
[<c01d4a1e>] pci_unregister_driver+0xe/0x20
[<e09c7ecd>] alsa_card_intel8x0_exit+0xd/0x23 [snd_intel8x0]
[<c0131245>] sys_delete_module+0x125/0x180
[<c01467ac>] do_munmap+0x10c/0x150
[<c01071af>] syscall_call+0x7/0xb
In case it does matter udevd (from udev 0.024-2) is running:
udevd S C013AE36 0 5521 1 2523 (NOTLB)
cc50feb4 00000082 cc50feb4 c013ae36 13b94045 13b94045 dd20a7e0 cc50fed4
00000000 dd20a240 dd20a260 00000000 d2ecfdc0 000f45af c440eb80 c440ed40
00000000 7fffffff 00000004 cc50fef0 c0125247 00000000 cc50fed8 00000246
Call Trace:
[<c013ae36>] __alloc_pages+0x96/0x310
[<c0125247>] schedule_timeout+0xa7/0xb0
[<c029a4d5>] datagram_poll+0x15/0xc0
[<c0162362>] do_select+0x152/0x270
[<c0162070>] __pollwait+0x0/0xc0
[<c0162733>] sys_select+0x283/0x460
[<c011ff17>] sys_waitpid+0x27/0x29
[<c01071af>] syscall_call+0x7/0xb
Any clue?
Luca
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