Dan Nelson
2005-Jan-18 22:27 UTC
panic: Assertion besttd != NULL failed at ../../../kern/subr_sleepqueue.c:676
Got this while running a Java proxy server under libthr:
FreeBSD dan.emsphone.com 5.3-STABLE FreeBSD 5.3-STABLE #387: Thu Jan 13 14:43:03
CST 2005 zsh@dan.emsphone.com:/usr/src/sys/i386/compile/DANSMP i386
panic: Assertion besttd != NULL failed at ../../../kern/subr_sleepqueue.c:676
cpuid = 1
KDB: stack backtrace:
panic(c07822b6,c078843f,c078825f,2a4,ffffffff) at panic+0x1cf
sleepq_signal(c3a9b4b0,0,ffffffff,e7461ce0,c05a74eb) at sleepq_signal+0xf0
wakeup_one(c3a9b4b0,0,c07863e3,12e,be3173f0) at wakeup_one+0x20
thr_wake(c2bb84b0,e7461d14,4,16,1) at thr_wake+0xdb
syscall(3123002f,2f,4c98002f,811bfc0,83f4400) at syscall+0x137
Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (443, FreeBSD ELF32, thr_wake), eip = 0x280e658f, esp = 0xbe3173ec,
ebp = 0xbe317418 ---
panic: mi_switch: switch in a critical section
cpuid = 1
The last two lines repeated forever until I reset the box, so no
coredump, but the stack is almost identical to a panic I got back in
November and did get a trace on (the crashdump is long gone though).
#0 doadump () at pcpu.h:159
#1 0xc059aa86 in boot (howto=260) at ../../../kern/kern_shutdown.c:397
#2 0xc059a55b in panic (fmt=0xc077e446 "Assertion %s failed at
%s:%d") at ../../../kern/kern_shutdown.c:553
#3 0xc05bcb5c in sleepq_remove_thread (sq=0xc3394dc0, td=0x0) at
../../../kern/subr_sleepqueue.c:594
#4 0xc05bd47d in sleepq_signal (wchan=0xc2c5d7d0, flags=0, pri=-1) at
../../../kern/subr_sleepqueue.c:675
#5 0xc05a1d80 in wakeup_one (ident=0x0) at ../../../kern/kern_synch.c:266
#6 0xc05a5dab in thr_wake (td=0xc38abaf0, uap=0x0) at
../../../kern/kern_thr.c:303
#7 0xc072a797 in syscall (frame={tf_fs = 819527727, tf_es = 1285816367, tf_ds =
-1078001617, tf_edi = 135378944, tf_esi = 137891840, tf_ebp = -1173986296,
tf_isp = -419791500, tf_ebx = 671700552, tf_edx = 138204160, tf_ecx = 0, tf_eax
= 443, tf_trapno = 22, tf_err = 2, tf_eip = 672032143, tf_cs = 31, tf_eflags =
582, tf_esp = -1173986340, tf_ss = 47}) at ../../../i386/i386/trap.c:1001
#8 0xc07168af in Xint0x80_syscall () at ../../../i386/i386/exception.s:201
--
Dan Nelson
dnelson@allantgroup.com