Date: Wed, 16 May 2018 16:30:15 +0200 From: Harry Schmalzbauer <freebsd@omnilan.de> To: "freebsd-fs@freebsd.org" <freebsd-fs@freebsd.org> Subject: Panic after 2 LORs autofs/syncer, zfs/devfs: general protection fault while in kernel mode Message-ID: <3914f2f0-be52-161c-8544-f813ac85f14c@omnilan.de>
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Hello, I haven't found a newer LOR list than http://sources.zabbadoz.net/freebsd/lor.html, so I'm not sure where/whether to report panics followed by LOR. Here's one I got while shutting down on r333486 (May 11th): Unread portion of the kernel message buffer: <118>Terminated <118>. <118>May 15 22:30:10 titan syslogd: exiting on signal 15 Waiting (max 60 seconds) for system process `vnlru' to stop... done Waiting (max 60 seconds) for system process `syncer' to stop... Syncing disks, vnodes remaining... 0 0 0 0 0 0 0 done Waiting (max 60 seconds) for system thread `bufdaemon' to stop... done Waiting (max 60 seconds) for system thread `bufspacedaemon-0' to stop... done Waiting (max 60 seconds) for system thread `bufspacedaemon-1' to stop... done Waiting (max 60 seconds) for system thread `bufspacedaemon-2' to stop... done Waiting (max 60 seconds) for system thread `bufspacedaemon-3' to stop... done Waiting (max 60 seconds) for system thread `bufspacedaemon-4' to stop... done Waiting (max 60 seconds) for system thread `bufspacedaemon-5' to stop... done Waiting (max 60 seconds) for system thread `bufspacedaemon-6' to stop... done All buffers synced. lock order reversal: 1st 0xfffff8002711a608 autofs (autofs) @ /usr/local/share/deploy-tools/HEAD/src/sys/kern/vfs_mount.c:1343 2nd 0xfffff80019fad248 syncer (syncer) @ /usr/local/share/deploy-tools/HEAD/src/sys/kern/vfs_subr.c:2734 stack backtrace: #0 0xffffffff808336c3 at witness_debugger+0x73 #1 0xffffffff80833544 at witness_checkorder+0xe34 #2 0xffffffff8079f6eb at lockmgr_lock_fast_path+0x18b #3 0xffffffff80bc91f9 at VOP_LOCK1_APV+0xd9 #4 0xffffffff808af5d6 at _vn_lock+0x66 #5 0xffffffff8089ec97 at vputx+0x157 #6 0xffffffff80896aa9 at dounmount+0x4d9 #7 0xffffffff808a048b at vfs_unmountall+0x6b #8 0xffffffff8087b7c5 at bufshutdown+0x2c5 #9 0xffffffff807cabea at kern_reboot+0x21a #10 0xffffffff807ca979 at sys_reboot+0x3a9 #11 0xffffffff80b0ce9c at amd64_syscall+0x28c #12 0xffffffff80ae92dd at fast_syscall_common+0x101 lock order reversal: 1st 0xfffff8000b168d88 zfs (zfs) @ /usr/local/share/deploy-tools/HEAD/src/sys/kern/vfs_mount.c:1343 2nd 0xfffff8000b169248 devfs (devfs) @ /usr/local/share/deploy-tools/HEAD/src/sys/kern/vfs_subr.c:2572 stack backtrace: #0 0xffffffff808336c3 at witness_debugger+0x73 #1 0xffffffff80833544 at witness_checkorder+0xe34 #2 0xffffffff8079f6eb at lockmgr_lock_fast_path+0x18b #3 0xffffffff80bc91f9 at VOP_LOCK1_APV+0xd9 #4 0xffffffff808af5d6 at _vn_lock+0x66 #5 0xffffffff8089e561 at vget+0x81 #6 0xffffffff8068576d at devfs_allocv+0xdd #7 0xffffffff80685263 at devfs_root+0x43 #8 0xffffffff8089f06a at vflush+0x6a #9 0xffffffff80685153 at devfs_unmount+0x43 #10 0xffffffff80896ae9 at dounmount+0x519 #11 0xffffffff808a04e4 at vfs_unmountall+0xc4 #12 0xffffffff8087b7c5 at bufshutdown+0x2c5 #13 0xffffffff807cabea at kern_reboot+0x21a #14 0xffffffff807ca979 at sys_reboot+0x3a9 #15 0xffffffff80b0ce9c at amd64_syscall+0x28c #16 0xffffffff80ae92dd at fast_syscall_common+0x101 Uptime: 1d13h25m53s Fatal trap 9: general protection fault while in kernel mode cpuid = 2; apic id = 02 instruction pointer = 0x20:0xffffffff81b13984 stack pointer = 0x28:0xfffffe0000575980 frame pointer = 0x28:0xfffffe0000575980 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 (dbu_evict) #0 doadump (textdump=0) at pcpu.h:231 #1 0xffffffff803e708b in db_dump (dummy=<value optimized out>, dummy2=<value optimized out>, dummy3=<value optimized out>, dummy4=<value optimized out>) at /usr/local/share/deploy-tools/HEAD/src/sys/ddb/db_command.c:574 #2 0xffffffff803e6e59 in db_command (cmd_table=<value optimized out>) at /usr/local/share/deploy-tools/HEAD/src/sys/ddb/db_command.c:481 #3 0xffffffff803e6bd4 in db_command_loop () at /usr/local/share/deploy-tools/HEAD/src/sys/ddb/db_command.c:534 #4 0xffffffff803e9e6f in db_trap (type=<value optimized out>, code=<value optimized out>) at /usr/local/share/deploy-tools/HEAD/src/sys/ddb/db_main.c:252 #5 0xffffffff808129b3 in kdb_trap (type=9, code=0, tf=<value optimized out>) at /usr/local/share/deploy-tools/HEAD/src/sys/kern/subr_kdb.c:697 #6 0xffffffff80b0c48f in trap_fatal (frame=0xfffffe00005758c0, eva=0) at /usr/local/share/deploy-tools/HEAD/src/sys/amd64/amd64/trap.c:872 #7 0xffffffff80b0ba6d in trap (frame=0xfffffe00005758c0) at counter.h:87 #8 0xffffffff80ae89fc in calltrap () at /usr/local/share/deploy-tools/HEAD/src/sys/amd64/amd64/exception.S:230 #9 0xffffffff81b13984 in spa_get_dsl () from /boot/kernel/zfs.ko #10 0xffffffff81b17d1f in txg_verify () from /boot/kernel/zfs.ko #11 0xffffffff81b1829f in txg_list_member () from /boot/kernel/zfs.ko #12 0xffffffff81acb969 in dsl_dir_evict_async () from /boot/kernel/zfs.ko #13 0xffffffff808260cc in taskqueue_run_locked (queue=0xfffff80004058800) at /usr/local/share/deploy-tools/HEAD/src/sys/kern/subr_taskqueue.c:465 #14 0xffffffff80826e98 in taskqueue_thread_loop (arg=<value optimized out>) at /usr/local/share/deploy-tools/HEAD/src/sys/kern/subr_taskqueue.c:757 #15 0xffffffff8078add4 in fork_exit (callout=0xffffffff80826e10 <taskqueue_thread_loop>, arg=0xfffff80003b46e40, frame=0xfffffe0000575ac0) at /usr/local/share/deploy-tools/HEAD/src/sys/kern/kern_fork.c:1039 #16 0xffffffff80ae99ae in fork_trampoline () at /usr/local/share/deploy-tools/HEAD/src/sys/amd64/amd64/exception.S:971 #17 0x0000000000000000 in ?? () -harry
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