kernel panic on resume: possibly audio-related

paul beard <[email protected]>
Newsgroups gmane.os.freebsd.devel.mobile
Organization University of Washington
Message-ID <[email protected]>
I had a bad feeling when I suspended my laptop and xmms emitted a 
horridly distorted noise as the screen went dark. My fears may 
have been justified as I had a kernel panic upon resuming this 
morning.

Sep 27 07:34:21 green /kernel: resumed from suspended mode (slept 
08:42:36)
Sep 27 07:34:21 green /kernel: pcm0: unregister: channel 
pcm0:play:0 busy (pid 12831)
Sep 27 07:34:21 green /kernel: csa: card is Thinkpad 600X/A20/T20
Sep 27 07:34:21 green /kernel: panic: resource_list_alloc: 
resource entry is busy
Sep 27 07:34:21 green /kernel:
Sep 27 07:34:21 green /kernel: syncing disks...
Sep 27 07:34:21 green /kernel:
Sep 27 07:34:21 green /kernel: Fatal trap 12: page fault while in 
kernel mode
Sep 27 07:34:21 green /kernel: fault virtual address    = 0x30
Sep 27 07:34:21 green /kernel: fault code               = 
supervisor read, page not present
Sep 27 07:34:21 green /kernel: instruction pointer      = 
0x8:0xc02eecdc
Sep 27 07:34:21 green /kernel: stack pointer            = 
0x10:0xc03ff148
Sep 27 07:34:21 green /kernel: frame pointer            = 
0x10:0xc03ff150
Sep 27 07:34:21 green /kernel: code segment             = base 
0x0, limit 0xfffff, type 0x1b
Sep 27 07:34:21 green /kernel: = DPL 0, pres 1, def32 1, gran 1
Sep 27 07:34:21 green /kernel: processor eflags = interrupt 
enabled, resume, IOPL = 0
Sep 27 07:34:21 green /kernel: current process          = Idle
Sep 27 07:34:21 green /kernel: interrupt mask           = bio
Sep 27 07:34:21 green /kernel: trap number              = 12
Sep 27 07:34:21 green /kernel: panic: page fault
Sep 27 07:34:21 green /kernel: Uptime: 15h48m5s
Sep 27 07:34:21 green /kernel: Automatic reboot in 15 seconds - 
press a key on the console to abort
Sep 27 07:34:21 green /kernel: Rebooting...

FreeBSD green.paulbeard.org 4.7-RC FreeBSD 4.7-RC #15: Tue Sep 24 
12:00:04 PDT 2002 
[email protected]:/usr/obj/usr/src/sys/GREEN  i386

I tested suspend/resume without any sound playing and had no 
problems.

-- 
Paul Beard / 8040 27th Ave NE / Seattle WA 98115 /
paulbeard [at] mac [ dot] com / 206 529 8400

weblog @ <http://paulbeard.no-ip.org/movabletype/>

Nothing is more admirable than the fortitude with which millionaires
tolerate the disadvantages of their wealth.
		-- Nero Wolfe


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