Date: Fri, 11 Feb 2011 12:01:12 GMT From: Alexandr Shish <aposichange@gmail.com> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/154679: [Fatal trap 12] "em1 taskq" only at startup (8.1-RELEASE) Message-ID: <201102111201.p1BC1C2e005992@red.freebsd.org> Resent-Message-ID: <201102111210.p1BCA9wj081906@freefall.freebsd.org>
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>Number: 154679 >Category: kern >Synopsis: [Fatal trap 12] "em1 taskq" only at startup (8.1-RELEASE) >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri Feb 11 12:10:09 UTC 2011 >Closed-Date: >Last-Modified: >Originator: Alexandr Shish >Release: 8.1-RELEASE >Organization: >Environment: FreeBSD leonet 8.1-RELEASE FreeBSD 8.1-RELEASE #2: Fri Jan 21 19:06:12 EET 2011 root@leonet:/usr/obj/usr/src/sys/M1 amd64 >Description: At startup i see panic, but if unplug network cable at few min, then system well booting and after plug cable stability work under have load. It is router for ~500users, bgp, ng_nat, few vlans, ng_car+ng_tee, ng_bpf, as firewall use ipfw. Additional info about system there (if somebody it need): http://mystat.com.ua/a/ core.txt - some log generated by savecore sysct.conf - /etc/sysctl.conf kernel.config kernel config vmcore (1,2G) kernel dump file At system work ng_nat node with source ip at loopback interface lo0 (I think it is important, tomorrow i try to boot system without it). Fatal trap 12: page fault while in kernel mode cpuid = 1; apic id = 01 fault virtual address = 0x18 fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff8032e051 stack pointer = 0x28:0xffffff8000100900 frame pointer = 0x28:0xffffff8000100940 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 = 0 (em1 taskq) trap number = 12 panic: page fault cpuid = 1 Uptime: 22s ..and dump kernel (kgdb) backtrace #0 doadump () at pcpu.h:223 #1 0xffffffff802d7399 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:416 #2 0xffffffff802d77cc in panic (fmt=0xffffffff805166a4 "%s") at /usr/src/sys/kern/kern_shutdown.c:590 #3 0xffffffff804c7048 in trap_fatal (frame=0xffffff0001464ba0, eva=Variable "eva" is not available. ) at /usr/src/sys/amd64/amd64/trap.c:777 #4 0xffffffff804c7414 in trap_pfault (frame=0xffffff8000100850, usermode=0) at /usr/src/sys/amd64/amd64/trap.c:693 #5 0xffffffff804c7c5a in trap (frame=0xffffff8000100850) at /usr/src/sys/amd64/amd64/trap.c:451 #6 0xffffffff804ad5b3 in calltrap () at /usr/src/sys/amd64/amd64/exception.S:223 #7 0xffffffff8032e051 in m_copydata (m=0x0, off=0, len=107, cp=0xffffff0001eec495 "") at /usr/src/sys/kern/uipc_mbuf.c:817 #8 0xffffffff803b520d in ip_forward (m=0xffffff0001d3bc00, srcrt=Variable "srcrt" is not available. ) at /usr/src/sys/netinet/ip_input.c:1471 #9 0xffffffff803b6a7c in ip_input (m=0xffffff0001d3bc00) at /usr/src/sys/netinet/ip_input.c:735 #10 0xffffffff80386e6e in netisr_dispatch_src (proto=1, source=Variable "source" is not available. ) at /usr/src/sys/net/netisr.c:917 #11 0xffffffff80381fec in ether_demux (ifp=0xffffff000168f000, m=0xffffff0001d3bc00) at /usr/src/sys/net/if_ethersubr.c:901 #12 0xffffffff80382397 in ether_input (ifp=0xffffff000168f000, m=0xffffff0001d3bc00) at /usr/src/sys/net/if_ethersubr.c:760 #13 0xffffffff80381f0f in ether_demux (ifp=0xffffff00012da800, m=0xffffff0001d3bc00) at /usr/src/sys/net/if_ethersubr.c:810 #14 0xffffffff80382397 in ether_input (ifp=0xffffff00012da800, m=0xffffff0001d3bc00) at /usr/src/sys/net/if_ethersubr.c:760 #15 0xffffffff801d6e56 in em_rxeof (rxr=0xffffff0001409400, count=100) at /usr/src/sys/dev/e1000/if_em.c:4200 #16 0xffffffff801d7ec0 in em_handle_que (context=Variable "context" is not available. ) at /usr/src/sys/dev/e1000/if_em.c:1453 #17 0xffffffff80312193 in taskqueue_run (queue=0xffffff000146b180) at /usr/src/sys/kern/subr_taskqueue.c:239 #18 0xffffffff80312416 in taskqueue_thread_loop (arg=Variable "arg" is not available. ) at /usr/src/sys/kern/subr_taskqueue.c:360 #19 0xffffffff802af2e8 in fork_exit (callout=0xffffffff803123d0 <taskqueue_thread_loop>, arg=0xffffff80002d96e0, frame=0xffffff8000100c80) at /usr/src/sys/kern/kern_fork.c:844 #20 0xffffffff804ada8e in fork_trampoline () at /usr/src/sys/amd64/amd64/exception.S:562 .... #44 0x0000000000000000 in ?? () #45 0x000000000087c000 in ?? () #46 0x0000000000000000 in ?? () #47 0xffffff0001464ba0 in ?? () #48 0xffffffff806e7000 in affinity () #49 0xffffff00012f13e0 in ?? () #50 0xffffff80001004c0 in ?? () #51 0xffffff8000100478 in ?? () #52 0xffffff0001464ba0 in ?? () #53 0xffffffff802f9d0a in sched_switch (td=0xffffff80002d96e0, newtd=0xffffffff803123d0, flags=Variable "flags" is not available. ) at /usr/src/sys/kern/sched_ule.c:1844 Previous frame inner to this frame (corrupt stack?) (kgdb) Sometime at startup i can se at startup some like this kernel: panic: sbdrop kernel: cpuid = 0 after there system trying to dump kernel and stoped at firsts second (I guess this trouble is interrelated witch "em1 taskq" panic ) I has patch kernel witch http://www.freebsd.org/cgi/query-pr.cgi?prp=148807-1-diff&n=/patch-1.diff posted at http://www.freebsd.org/cgi/query-pr.cgi?pr=148807&cat= but i have some other trouble witch sbdrop and this patch not required >How-To-Repeat: At this time i try to simulate this situation at wmware@linux. So far unsuccessfully. Maybe wmware Network adapter not fully simulate real ethercard? But at 7.x upgrade to 8.0 at some configurated althoud ng_nat use one ip on internal interface, and now use few ip at loopback, this bug do not pop up. >Fix: As workaround unplug network cable at startup time. >Release-Note: >Audit-Trail: >Unformatted:
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