Date: Sat, 22 Jun 2002 20:44:13 +0200 From: Szilveszter Adam <sziszi@bsd.hu> To: freebsd-current@freebsd.org Subject: Kernel panic with suser_cred and rm Message-ID: <20020622184413.GB728@fonix.adamsfamily.xx>
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Hello everybody,
I upgraded to today's -CURRENT and upon reboot with the new kernel,
experienced a panic. Since I did not see it reported here yet, here is
some info. More available on request, but I do not have a serial console
and therefore had to transcribe everything by hand. Also, there was no
core dump. (How can I force it?)
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x4
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc02054bc
stack pointer = 0x10:0xceb1db5c
frame pointer = 0x10:0xceb1db60
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 48 (rm)
kernel: type 12 trap, code= 0
Stopped at suser_cred+0x1c: cmpl $0,0x4(%edx)
db> trace
suser_cred
chkiq
ufs_inactive
ufs_vnoperate
vput
unlink
syscall
syscall_with_err_pushed
--- syscall (10, FreeBSD ELF, unlink) eip = 0x804af7b, esp = 0xbfbffc7c
ebp = 0xbfbffd08
db> show locks
exclusive sleep mutex Giant r= 0 (0xc03ed260) locked @
../../../vm/vm_fault.c:202
FreeBSD fonix.adamsfamily.xx 5.0-CURRENT FreeBSD 5.0-CURRENT #46: Sat Jun 15 17:57:46 CEST 2002 root@fonix.adamsfamily.xx:/usr/home/cc/build/freebsd/src/sys/i386/compile/FONIX i386
dmesg is not available from the failing kernel, but the only "could
sleep with..." messages came from the soundcard driver.
The panic happens also in single-user mode, in my case most easily
triggered with the use of rm(1).
If you need any more info, just ask.
--
Regards:
Szilveszter ADAM
Szombathely Hungary
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