Date: Wed, 29 Dec 2010 07:57:57 GMT From: Oleg Nauman <oleg.nauman@gmail.com> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/153514: CAM related panic Message-ID: <201012290757.oBT7vv5E022270@red.freebsd.org> Resent-Message-ID: <201012290800.oBT80Js1061234@freefall.freebsd.org>
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>Number: 153514
>Category: kern
>Synopsis: CAM related panic
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Dec 29 08:00:19 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator: Oleg Nauman
>Release: 8.2-PRERELEASE
>Organization:
Private Person
>Environment:
FreeBSD rainhaven.theweb.org.ua 8.2-PRERELEASE FreeBSD 8.2-PRERELEASE #147: Mon Dec 27 18:43:38 EET 2010 root@rainhaven.theweb.org.ua:/usr/src/sys/i386/compile/oleg i386
>Description:
My laptop experiencing the crash during detach builtin cardreader on my EVDO modem
Here is the backtrace from core.txt file:
rainhaven.theweb.org.ua dumped core - see /var/crash/vmcore.9
Tue Dec 28 08:44:54 EET 2010
FreeBSD rainhaven.theweb.org.ua 8.2-PRERELEASE FreeBSD 8.2-PRERELEASE #147: Mon Dec 27 18:43:38 EET 2010 root@rainhaven.theweb.org.ua:/usr/src/sys/i386/compile/oleg i386
panic: page fault
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This GDB was configured as "i386-marcel-freebsd"...
Unread portion of the kernel message buffer:
umass0: at uhub5, port 3, addr 2 (disconnected)
(probe0:umass-sim0:0:0:0): AutoSense failed
kernel trap 12 with interrupts disabled
Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address = 0x14
fault code = supervisor read, page not present
instruction pointer = 0x20:0xc0736482
stack pointer = 0x28:0xc5225bd4
frame pointer = 0x28:0xc5225bec
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = resume, IOPL = 0
current process = 12 (swi2: cambio)
trap number = 12
panic: page fault
cpuid = 0
KDB: stack backtrace:
#0 0xc072ac57 at kdb_backtrace+0x47
#1 0xc06ffe97 at panic+0x117
#2 0xc09a31f3 at trap_fatal+0x323
#3 0xc09a3602 at trap+0x152
#4 0xc098c87c at calltrap+0x6
#5 0xc06f25e9 at _mtx_unlock_sleep+0x49
#6 0xc06f2669 at _mtx_unlock_flags+0x49
#7 0xc0473bb0 at camisr+0x110
#8 0xc06de98c at intr_event_execute_handlers+0x14c
#9 0xc06df77e at ithread_loop+0xbe
#10 0xc06dccde at fork_exit+0xee
#11 0xc098c8f4 at fork_trampoline+0x8
Uptime: 6m55s
Physical memory: 2027 MB
Dumping 121 MB: 106 90 74 58 42 26 10
Reading symbols from /boot/modules/bwn_v4_ucode.ko...Reading symbols from /boot/modules/bwn_v4_ucode.ko.symbols...done.
done.
Loaded symbols for /boot/modules/bwn_v4_ucode.ko
Reading symbols from /boot/modules/cuse4bsd.ko...done.
Loaded symbols for /boot/modules/cuse4bsd.ko
#0 doadump () at pcpu.h:231
231 pcpu.h: No such file or directory.
in pcpu.h
(kgdb) #0 doadump () at pcpu.h:231
#1 0xc06ffc93 in boot (howto=260) at ../../../kern/kern_shutdown.c:419
#2 0xc06ffed0 in panic (fmt=Variable "fmt" is not available.
) at ../../../kern/kern_shutdown.c:592
#3 0xc09a31f3 in trap_fatal (frame=0xc5225b94, eva=20)
at ../../../i386/i386/trap.c:946
#4 0xc09a3602 in trap (frame=0xc5225b94) at ../../../i386/i386/trap.c:326
#5 0xc098c87c in calltrap () at ../../../i386/i386/exception.s:166
#6 0xc0736482 in turnstile_broadcast (ts=0x0, queue=0)
at ../../../kern/subr_turnstile.c:831
#7 0xc06f25e9 in _mtx_unlock_sleep (m=0xc67e170c, opts=0,
file=0xc0a04b40 "../../../cam/cam_xpt.c", line=4715)
at ../../../kern/kern_mutex.c:675
#8 0xc06f2669 in _mtx_unlock_flags (m=0xc67e170c, opts=0,
file=0xc0a04b40 "../../../cam/cam_xpt.c", line=4715)
at ../../../kern/kern_mutex.c:227
#9 0xc0473bb0 in camisr (dummy=0x0) at ../../../cam/cam_xpt.c:4715
#10 0xc06de98c in intr_event_execute_handlers (p=0xc556f7f8, ie=0xc56a8800)
at ../../../kern/kern_intr.c:1220
#11 0xc06df77e in ithread_loop (arg=0xc556e2b0)
at ../../../kern/kern_intr.c:1233
#12 0xc06dccde in fork_exit (callout=0xc06df6c0 <ithread_loop>,
arg=0xc556e2b0, frame=0xc5225d28) at ../../../kern/kern_fork.c:845
#13 0xc098c8f4 in fork_trampoline () at ../../../i386/i386/exception.s:273
(kgdb)
My laptop is running the fresh RELENG_8 world
>How-To-Repeat:
My EVDO modem is strange a bit - USB subsystem attaching and detaching it repeatedly. After few cycles of attach/detach I got the CAM related panic
>Fix:
Not yet known to me
>Release-Note:
>Audit-Trail:
>Unformatted:
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