I've been getting a lot of these for the last two weeks on my SMP box. This panic is on -CURRENT from earlier today. Scheduler is ULE. lock order reversal 1st 0xc047f820 sched lock (sched lock) _at_ /usr/src/sys/kern/kern_intr.c:548 2nd 0xc04b83c0 sio (sio) _at_ /usr/src/sys/dev/sio/sio.c:3242 Stack backtrace: backtrace(c0400378,c04b83c0,c0463120,c0463120,c041266b) at backtrace+0x17 witness_lock(c04b83c0,8,c041266b,caa,c11efc00) at witness_lock+0x697 _mtx_lock_spin_flags(c04b83c0,0,c041266b,caa,0) at _mtx_lock_spin_flags+0xd1 siocnputc(c0463280,d,5,d1d62b68,0) at siocnputc+0x81 cnputc(a,ffffffff,1,c0415c53,c) at cnputc+0x56 putchar(a,d1d62b68,d1d62ab4,c0491d40,0) at putchar+0xcd kvprintf(c0415c52,c025eba0,d1d62b68,a,d1d62b88) at kvprintf+0x7d printf(c0415c52,c,c0415a4d,c03fe55b,c0489b20) at printf+0x57 trap_fatal(d1d62c14,38,d1d62bf0,c0236c9d,38) at trap_fatal+0x76 trap(d1d60018,c0240010,c0470010,c11dcbe0,c0482280) at trap+0x123 calltrap() at calltrap+0x5 --- trap 0xc, eip = 0xc0253ec7, esp = 0xd1d62c54, ebp = 0xd1d62c68 --- sched_choose(c11dee40,c03fe7a6,28c,0,c11db668) at sched_choose+0x77 choosethread(c11dcbe0,2,c03fdb89,1dc,b6e81bd0) at choosethread+0x36 mi_switch(c047f820,0,c03fb1fd,224,c11db5ac) at mi_switch+0x200 ithread_loop(c11da180,d1d62d48,c03fb0ae,30c,55ff44fd) at ithread_loop+0x256 fork_exit(c022caf0,c11da180,d1d62d48) at fork_exit+0xc0 fork_trampoline() at fork_trampoline+0x1a --- trap 0x1, eip = 0, esp = 0xd1d62d7c, ebp = 0 --- Fatal trap 12: page fault while in kernel mode cpuid = 1; lapic.id = 01000000 fault virtual address = 0x38 fault code = supervisor read, page not present instruction pointer = 0x8:0xc0253ec7 stack pointer = 0x10:0xd1d62c54 frame pointer = 0x10:0xd1d62c68 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 = 14 (swi7: tty:sio clock) kernel: type 12 trap, code=0 Stopped at sched_choose+0x77: movl 0x38(%eax),%eax I recall most if not all of these panics occuring when swi7: tty:sio clock is the current process. These are not completely repeatable, but if I simply reboot a couple of times, I can get the panic to occur while the rc scripts are being run. -- David P. Reese Jr. daver_at_gomerbud.com -------------------------------------------------------------------------- It can be argued that returning a NULL pointer when asked to allocate zero bytes is a silly response to a silly question. -- FreeBSD manual page for malloc(3)Received on Thu Jun 05 2003 - 23:10:49 UTC
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