Date: Thu, 16 Jun 2016 20:03:54 -0500 From: Mark Felder <feld@FreeBSD.org> To: freebsd-current@freebsd.org, freebsd-ipfw@freebsd.org Subject: ALPHA3 panic with ipfw+dummynet and gif/gre tunnels Message-ID: <1466125434.1167831.640215001.594DC233@webmail.messagingengine.com>
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Hello, I can pretty reliably panic CURRENT by creating/destroying gif and gre interfaces used for IPv6 tunnels. I'm uploading the dump, kernel.debug, and kernel in a tarball here: https://feld.me/freebsd/crash/r301929.tgz It's still uploading so you might end up with an incomplete download if you fetch it now. Here's the sha256 of it: 1e9fddad1da3bac2b11c51a18c7dad48eb9259acf844f35f5eb40630ca84de64 r301929.tgz Here's the backtrace: (kgdb) bt #0 doadump (textdump=0) at pcpu.h:221 #1 0xffffffff80391fab in db_dump (dummy=<value optimized out>, dummy2=false, dummy3=0, dummy4=0x0) at /usr/src/sys/ddb/db_command.c:533 #2 0xffffffff80391da9 in db_command (cmd_table=<value optimized out>) at /usr/src/sys/ddb/db_command.c:440 #3 0xffffffff80391b04 in db_command_loop () at /usr/src/sys/ddb/db_command.c:493 #4 0xffffffff80394a3b in db_trap (type=<value optimized out>, code=<value optimized out>) at /usr/src/sys/ddb/db_main.c:251 #5 0xffffffff80a88913 in kdb_trap (type=<value optimized out>, code=<value optimized out>, tf=<value optimized out>) at /usr/src/sys/kern/subr_kdb.c:654 #6 0xffffffff80eb8331 in trap_fatal (frame=0xfffffe0122831770, eva=26) at /usr/src/sys/amd64/amd64/trap.c:836 #7 0xffffffff80eb857d in trap_pfault (frame=0xfffffe0122831770, usermode=0) at /usr/src/sys/amd64/amd64/trap.c:691 #8 0xffffffff80eb7a64 in trap (frame=0xfffffe0122831770) at /usr/src/sys/amd64/amd64/trap.c:442 #9 0xffffffff80e97f91 in calltrap () at /usr/src/sys/amd64/amd64/exception.S:236 #10 0xffffffff80c57ebc in ip6_output (m0=<value optimized out>, opt=<value optimized out>, ro=<value optimized out>, flags=<value optimized out>, im6o=0x0, ifpp=0x0, inp=<value optimized out>) at /usr/src/sys/netinet6/ip6_output.c:1060 #11 0xffffffff82661fd2 in dummynet_send (m=<value optimized out>) at /usr/src/sys/modules/dummynet/../../netpfil/ipfw/ip_dn_io.c:800 #12 0xffffffff82661890 in dummynet_task (context=<value optimized out>, pending=<value optimized out>) at /usr/src/sys/modules/dummynet/../../netpfil/ipfw/ip_dn_io.c:746 #13 0xffffffff80a9a1ac in taskqueue_run_locked (queue=<value optimized out>) at /usr/src/sys/kern/subr_taskqueue.c:465 #14 0xffffffff80a9acf8 in taskqueue_thread_loop (arg=<value optimized out>) at /usr/src/sys/kern/subr_taskqueue.c:719 #15 0xffffffff80a0b3e4 in fork_exit (callout=0xffffffff80a9ac70 <taskqueue_thread_loop>, arg=0xffffffff8266c8a8, frame=0xfffffe0122831c00) at /usr/src/sys/kern/kern_fork.c:1038 #16 0xffffffff80e984ce in fork_trampoline () at /usr/src/sys/amd64/amd64/exception.S:611 #17 0x0000000000000000 in ?? () Current language: auto; currently minimal -- Mark Felder ports-secteam member feld@FreeBSD.org
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