panic: Assertion !mtx_owned(&w_mtx) failed at /usr/src/sys/kern/subr_witness.c:958 cpuid = 0 KDB: enter: panic exclusive sleep mutex Giant r = 0 (0xc0bb1250) locked @ /usr/src/sys/kern/vfs_syscalls.c:3727 shared spin mutex (exclusive sleep mutex Giant r = 0 (0xc0bb1250) locked @ /usr/src/sys/kern/vfs_syscalls.c:3727 shared spin mutex (shared spin mutex (panic: from debugger cpuid = 0 Uptime: 53s Physical memory: 1003 MB Dumping 95 MB: 80 64 48 32 16 #0 doadump () at pcpu.h:195 195 __asm __volatile("movl %%fs:0,%0" : "=r" (td)); (kgdb) bt #0 doadump () at pcpu.h:195 #1 0xc074ec6e in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:409 #2 0xc074ef2b in panic (fmt=Variable "fmt" is not available. ) at /usr/src/sys/kern/kern_shutdown.c:563 #3 0xc048c887 in db_panic (addr=Could not find the frame base for "db_panic". ) at /usr/src/sys/ddb/db_command.c:433 #4 0xc048d275 in db_command_loop () at /usr/src/sys/ddb/db_command.c:401 #5 0xc048e9e5 in db_trap (type=3, code=0) at /usr/src/sys/ddb/db_main.c:222 #6 0xc0775c76 in kdb_trap (type=3, code=0, tf=0xe69ea140) at /usr/src/sys/kern/subr_kdb.c:502 #7 0xc0a02e6b in trap (frame=0xe69ea140) at /usr/src/sys/i386/i386/trap.c:621 #8 0xc09e889b in calltrap () at /usr/src/sys/i386/i386/exception.s:139 #9 0xc0775df2 in kdb_enter (msg=0xc0a9bd83 "panic") at cpufunc.h:60 #10 0xc074ef14 in panic (fmt=0xc0a971f1 "Assertion %s failed at %s:%d") at /usr/src/sys/kern/kern_shutdown.c:547 #11 0xc0786349 in witness_checkorder (lock=0xc0c22a60, flags=Variable "flags" is not available. ) at /usr/src/sys/kern/subr_witness.c:958 #12 0xc0743a2f in _mtx_lock_spin_flags (m=0xc0c22a60, opts=0, file=0xc0a8920f "/usr/src/sys/dev/syscons/syscons.c", line=1801) at /usr/src/sys/kern/kern_mutex.c:223 #13 0xc0677b1d in scrn_update (scp=0xc0bad260, show_cursor=1) at /usr/src/sys/dev/syscons/syscons.c:1801 #14 0xc0679826 in sccnupdate (scp=0xc0bad260) at /usr/src/sys/dev/syscons/syscons.c:1683 #15 0xc067b59d in sc_cnputc (cd=0xc0b0a320, c=107) at /usr/src/sys/dev/syscons/syscons.c:1571 #16 0xc0798b6f in cnputc (c=107) at /usr/src/sys/kern/tty_cons.c:632 #17 0xc0779367 in putcons (c=Variable "c" is not available. ) at /usr/src/sys/kern/subr_prf.c:372 #18 0xc0779431 in putchar (c=107, arg=0xe69ea40c) at /usr/src/sys/kern/subr_prf.c:413 #19 0xc0777e05 in kvprintf (fmt=0xc0aca641 "ernel trap %d with interrupts disabled\n", func=0xc07793d0 , arg=0xe69ea40c, radix=10, ap=0xe69ea438 "\f") at /usr/src/sys/kern/subr_prf.c:599 #20 0xc0778f6e in printf (fmt=0xc0aca640 "kernel trap %d with interrupts disabled\n") at /usr/src/sys/kern/subr_prf.c:314 #21 0xc0a029ce in trap (frame=0xe69ea4cc) at /usr/src/sys/i386/i386/trap.c:237 #22 0xc09e889b in calltrap () at /usr/src/sys/i386/i386/exception.s:139 #23 0xc07841b3 in isitmychild (parent=0xc607c4ec, child=0xc0bc14c8) at /usr/src/sys/kern/subr_witness.c:1614 #24 0xc078637e in witness_checkorder (lock=0xc0c22a60, flags=Variable "flags" is not available. ) at /usr/src/sys/kern/subr_witness.c:965 #25 0xc0743a2f in _mtx_lock_spin_flags (m=0xc0c22a60, opts=0, file=0xc0a8920f "/usr/src/sys/dev/syscons/syscons.c", line=1801) at /usr/src/sys/kern/kern_mutex.c:223 #26 0xc0677b1d in scrn_update (scp=0xc0bad260, show_cursor=1) at /usr/src/sys/dev/syscons/syscons.c:1801 #27 0xc0679826 in sccnupdate (scp=0xc0bad260) at /usr/src/sys/dev/syscons/syscons.c:1683 #28 0xc067b59d in sc_cnputc (cd=0xc0b0a320, c=75) at /usr/src/sys/dev/syscons/syscons.c:1571 #29 0xc0798b6f in cnputc (c=75) at /usr/src/sys/kern/tty_cons.c:632 #30 0xc0779367 in putcons (c=Variable "c" is not available. ) at /usr/src/sys/kern/subr_prf.c:372 #31 0xc0779431 in putchar (c=75, arg=0xe69ea768) at /usr/src/sys/kern/subr_prf.c:413 #32 0xc0777e05 in kvprintf (fmt=0xc0aca66a "ernel page fault", func=0xc07793d0 , arg=0xe69ea768, radix=10, ap=0xe69ea7cc "") at /usr/src/sys/kern/subr_prf.c:599 #33 0xc0778e8b in vprintf (fmt=0xc0aca669 "Kernel page fault", ap=0xe69ea7cc "") at /usr/src/sys/kern/subr_prf.c:352 #34 0xc0785861 in witness_warn (flags=5, lock=0x0, fmt=0xc0aca669 "Kernel page fault") at /usr/src/sys/kern/subr_witness.c:1385 #35 0xc0a02a22 in trap (frame=0xe69ea858) at /usr/src/sys/i386/i386/trap.c:274 #36 0xc09e889b in calltrap () at /usr/src/sys/i386/i386/exception.s:139 #37 0xc43f6ab0 in ?? ()