On 09/13/15 at 08:51P, Alexander V. Chernikov wrote: > > > 12.09.2015, 20:30, "hiren panchasara" <hiren_at_strugglingcoder.info>: > > On 09/12/15 at 03:32P, Alexander V. Chernikov wrote: > >> ?12.09.2015, 02:22, "hiren panchasara" <hiren_at_strugglingcoder.info>: > >> ?> On 09/11/15 at 09:06P, Hans Petter Selasky wrote: > > > > [skip] > >> ?> I'll try to get it. Meanwhile I am getting another panic on idle box: > >> ?> http://pastebin.com/9qJTFMik > >> ?The easiest explanation could be lack of lla_create() result check, fixed in r286945. > >> ?This panic is triggered by fast interface down-up (or just up), when ARP packet is received but there are no (matching) IPv4 prefix on the interface. > >> ?If this is not the case (e.g. it paniced w/o any interface changes and there were no other subnets in given L2 segment) I'd be happy to debug this further. > > > > Just hit another last night. (Box goes to db> ; let me know if you want > > to debug anything when that happens.) > Would you mind showing full backtrace for that core? (e.g. situation has to be different for newer -current). Sure: Fatal trap 12: page fault while in kernel mode cpuid = 0; apic id = 00 fault virtual address = 0x20 fault code = supervisor write data, page not present instruction pointer = 0x20:0xffffffff80f214d6 stack pointer = 0x28:0xfffffe00003d0620 frame pointer = 0x28:0xfffffe00003d0630 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 12 (irq264: igb0:que 0) [ thread pid 12 tid 100035 ] Stopped at memcpy+0x16: repe movsb (%rsi),%es:(%rdi) db> bt full Symbol not found KDB: reentering KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+43/frame 0xfffffe00003cff10 kdb_reenter() at kdb_reenter+51/frame 0xfffffe00003cff20 db_term() at db_term+136/frame 0xfffffe00003cff40 db_unary() at db_unary+116/frame 0xfffffe00003cff60 db_mult_expr() at db_mult_expr+27/frame 0xfffffe00003cffa0 db_add_expr() at db_add_expr+27/frame 0xfffffe00003cffe0 db_expression() at db_expression+29/frame 0xfffffe00003d0030 db_stack_trace() at db_stack_trace+48/frame 0xfffffe00003d0060 db_command() at db_command+865/frame 0xfffffe00003d0120 db_command_loop() at db_command_loop+100/frame 0xfffffe00003d0130 db_trap() at db_trap+219/frame 0xfffffe00003d01c0 kdb_trap() at kdb_trap+404/frame 0xfffffe00003d0250 trap_fatal() at trap_fatal+789/frame 0xfffffe00003d02b0 trap_pfault() at trap_pfault+806/frame 0xfffffe00003d0350 trap() at trap+1124/frame 0xfffffe00003d0560 calltrap() at calltrap+8/frame 0xfffffe00003d0560 --- trap 12, rip = 18446744071577933014, rsp = 18446741874690295344, rbp = 18446741874690295344 --- memcpy() at memcpy+22/frame 0xfffffe00003d0630 arpintr() at arpintr+2951/frame 0xfffffe00003d0750 netisr_dispatch_src() at netisr_dispatch_src+97/frame 0xfffffe00003d07c0 ether_demux() at ether_demux+345/frame 0xfffffe00003d07f0 ether_nh_input() at ether_nh_input+888/frame 0xfffffe00003d0850 netisr_dispatch_src() at netisr_dispatch_src+97/frame 0xfffffe00003d08c0 ether_input() at ether_input+38/frame 0xfffffe00003d08e0 igb_rxeof() at igb_rxeof+1764/frame 0xfffffe00003d0990 igb_msix_que() at igb_msix_que+352/frame 0xfffffe00003d09e0 intr_event_execute_handlers() at intr_event_execute_handlers+474/frame 0xfffffe00003d0a20 ithread_loop() at ithread_loop+166/frame 0xfffffe00003d0a70 fork_exit() at fork_exit+156/frame 0xfffffe00003d0ab0 fork_trampoline() at fork_trampoline+14/frame 0xfffffe00003d0ab0 --- trap 0, rip = 0, rsp = 0, rbp = 0 --- db> Cheers, Hiren
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