KASSERT() in kern_timeout.c

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

Hi,
last night I got the panic below on a fairly busy ftp/http server
(serving static content). The kernel is 5.0_STABLE from Jan, 19.
Does it ring a bell to someone ?

panic: kernel diagnostic assertion "c->c_cpu->cc_lwp == curlwp || 
c->c_cpu->cc_active != c" failed: file 
"/home/src/src-5/src/sys/kern/kern_timeout.c", line 310
fatal breakpoint trap in supervisor mode
trap type 1 code 0 rip ffffffff803dab85 cs 8 rflags 246 cr2  ffff8000b2615000 
cpl 4 rsp ffff8000a3b66840
Stopped in pid 0.3 (system) at  netbsd:breakpoint+0x5:  leave
db{0}>
db{0}> tr
breakpoint() at netbsd:breakpoint+0x5
panic() at netbsd:panic+0x24d
__kernassert() at netbsd:__kernassert+0x2d
callout_destroy() at netbsd:callout_destroy+0xa7
syn_cache_get() at netbsd:syn_cache_get+0x936
tcp_input() at netbsd:tcp_input+0x11fb
ip_input() at netbsd:ip_input+0x5c7
ipintr() at netbsd:ipintr+0x6a
softint_dispatch() at netbsd:softint_dispatch+0xe7
DDB lost frame for netbsd:Xsoftintr+0x50, trying 0xffff8000a3b66d70
Xsoftintr() at netbsd:Xsoftintr+0x50
--- interrupt ---
0:
db{0}> mach cpu 1
using CPU 1
db{0}> tr
mutex_vector_enter() at netbsd:mutex_vector_enter+0xf6
do_sys_getsockname() at netbsd:do_sys_getsockname+0x6f
sys_getsockname() at netbsd:sys_getsockname+0x23
syscall() at netbsd:syscall+0xb6
db{0}> mach cpu 2
using CPU 2
db{0}> tr
x86_pause() at netbsd:x86_pause+0x2
cv_timedwait_sig() at netbsd:cv_timedwait_sig+0x132
sowait() at netbsd:sowait+0x52
do_sys_accept() at netbsd:do_sys_accept+0x146
sys_accept() at netbsd:sys_accept+0x28
syscall() at netbsd:syscall+0xb6
db{0}> mach cpu 3
using CPU 3
db{0}> tr
ffs_sync() at netbsd:ffs_sync+0xda
VFS_SYNC() at netbsd:VFS_SYNC+0x33
sync_fsync() at netbsd:sync_fsync+0x85
VOP_FSYNC() at netbsd:VOP_FSYNC+0x71
sched_sync() at netbsd:sched_sync+0x15d
db{0}> mach cpu 4
using CPU 4
db{0}> tr
x86_pause() at netbsd:x86_pause+0x2
cv_timedwait_sig() at netbsd:cv_timedwait_sig+0x132
sowait() at netbsd:sowait+0x52
do_sys_accept() at netbsd:do_sys_accept+0x146
sys_accept() at netbsd:sys_accept+0x28
syscall() at netbsd:syscall+0xb6
db{0}> mach cpu 5
using CPU 5
db{0}> tr
mutex_vector_enter() at netbsd:mutex_vector_enter+0xf1
cv_timedwait_sig() at netbsd:cv_timedwait_sig+0x132
sowait() at netbsd:sowait+0x52
do_sys_accept() at netbsd:do_sys_accept+0x146
sys_accept() at netbsd:sys_accept+0x28
syscall() at netbsd:syscall+0xb6
db{0}> mach cpu 6
using CPU 6
db{0}> tr
x86_pause() at netbsd:x86_pause+0x2
sosend() at netbsd:sosend+0x2eb
soo_write() at netbsd:soo_write+0x2d
dofilewrite() at netbsd:dofilewrite+0x81
sys_write() at netbsd:sys_write+0x72
syscall() at netbsd:syscall+0xb6
db{0}> mach cpu 7
using CPU 7
db{0}> tr
x86_pause() at netbsd:x86_pause
mutex_vector_enter() at netbsd:mutex_vector_enter+0xf6
cv_timedwait_sig() at netbsd:cv_timedwait_sig+0x132
sowait() at netbsd:sowait+0x52
do_sys_accept() at netbsd:do_sys_accept+0x146
sys_accept() at netbsd:sys_accept+0x28
syscall() at netbsd:syscall+0xb6

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--