Date: Tue, 2 Jul 2002 17:12:37 -0400 (EDT) From: Andrew Gallatin <gallatin@cs.duke.edu> To: julian@elischer.org Cc: freebsd-current@freebsd.org Subject: KSE signal problems still Message-ID: <15650.5957.15992.275984@grasshopper.cs.duke.edu>
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An easy way to induce a panic w/a post KSE -current is to ^C gdb as it
starts on an SMP machine:
# gdb -k /var/crash/kernel.1 /var/crash/vmcore.1
GNU gdb 5.2.0 (FreeBSD) 20020627
Copyright 2002 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and
you are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for
details.
This GDB was configured as "i386-undermydesk-freebsd"...
^C
panic: mutex sched lock not owned at ../../../kern/subr_smp.c:126
cpuid = 1; lapic.id = 01000000
Debugger("panic")
Stopped at Debugger+0x46: xchgl %ebx,in_Debugger.0
db> where
No such command
db> tr
Debugger(c02dbf5a) at Debugger+0x46
panic(c02db1a8,c02db318,c02df736,7e,c4445540) at panic+0xd6
_mtx_assert(c0315440,1,c02df736,7e) at _mtx_assert+0xa8
forward_signal(c4445540) at forward_signal+0x1a
tdsignal(c4445540,2,2) at tdsignal+0x182
psignal(c443d558,2) at psignal+0x3c8
pgsignal(c441ad00,2,1,c441ad1c,0) at pgsignal+0x63
ttyinput(3,c41e8e30,c41e8e00,0,c0347903) at ttyinput+0x316
ptcwrite(c4307a00,d7d5ec88,7f0011,1,d7d5ebc4) at ptcwrite+0x17f
spec_write(d7d5ebf0,d7d5ec3c,c0204cc8,d7d5ebf0,7f0011) at spec_write+0x5a
spec_vnoperate(d7d5ebf0) at spec_vnoperate+0x13
vn_write(c41ded5c,d7d5ec88,c440cd80,0,c409e780) at vn_write+0x1c8
dofilewrite(c409e780,c41ded5c,5,8088000,1) at dofilewrite+0xaf
write(c409e780,d7d5ed14,3,b,282) at write+0x39
syscall(2f,2f,2f,1,8073410) at syscall+0x23c
syscall_with_err_pushed() at syscall_with_err_pushed+0x1b
--- syscall (4, FreeBSD ELF, write), eip = 0x281fb3a3, esp =
0xbfbff37c, ebp = 0xbfbff3e8 ---
This is a kernel with an updated version of kern_sync and
kern_condvar:
lcvs status kern/kern_synch.c kern/kern_condvar.c
===================================================================
File: kern_synch.c Status: Up-to-date
Working revision: 1.179 Tue Jul 2 20:18:15 2002
Repository revision: 1.179 /home/ncvs/src/sys/kern/kern_synch.c,v
Sticky Tag: (none)
Sticky Date: (none)
Sticky Options: (none)
===================================================================
File: kern_condvar.c Status: Up-to-date
Working revision: 1.24 Tue Jul 2 20:18:14 2002
Repository revision: 1.24 /home/ncvs/src/sys/kern/kern_condvar.c,v
Sticky Tag: (none)
Sticky Date: (none)
Sticky Options: (none)
I apologize if I'm being redundant, but the FreeBSD mail server seems
to be stuck -- I haven't gotten any messages on committers or -current
in hours.
Drew
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