My build machine had no issues with the upgrade from r361784 to r361830, but my laptop panicked during the transition from single- to multi-user mode, just after bpf was attached. Rebooting from the old kernel worked; trying to boot from r361830 failed again with similar symptoms, and the laptop normally runs stable/12 (r361761 yesterday; r361831 today), so it seems to be an issue in head. The build machine isn't a DHCP client, and doesn't run ipfw; the laptop differs (in both respects). The backtrace (from the core.txt file: ... <118>Mounting local filesystems: linprocfs registered <118>. <118>ELF ldconfig path: /lib /usr/lib /usr/lib/compat /usr/local/lib /usr/local/lib/R/lib /usr/local/lib/compat /usr/local/lib/gcc9 /usr/l ocal/lib/graphviz /usr/local/lib/mysql /usr/local/lib/perl5/5.30/mach/CORE /usr/local/lib/qt5 /usr/local/llvm80/lib /usr/local/llvm90/lib /usr/local/share/chromium <118>32-bit compatibility ldconfig path: /usr/lib32 /usr/lib32/compat /usr/local/lib32/compat <118>Setting hostname: localhost. <118>Setting up harvesting: PURE_RDRAND,[UMA],[FS_ATIME],SWI,INTERRUPT,NET_NG,[NET_ETHER],NET_TUN,MOUSE,KEYBOARD,ATTACH,CACHED <118>Feeding entropy: . <6>wlan0: bpf attached <6>wlan0: bpf attached Fatal trap 12: page fault while in kernel mode cpuid = 3; apic id = 03 fault virtual address = 0x0 fault code = supervisor read instruction, page not present instruction pointer = 0x20:0x0 stack pointer = 0x28:0xfffffe0fc08c3b08 frame pointer = 0x28:0xfffffe0fc08c3b80 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 (iwn0 net80211 taskq) trap number = 12 panic: page fault cpuid = 3 time = 1591362374 KDB: stack backtrace: db_trace_self_wrapper() at 0xffffffff804a4afb = db_trace_self_wrapper+0x2b/frame 0xfffffe0fc08c37b0 vpanic() at 0xffffffff80b93452 = vpanic+0x182/frame 0xfffffe0fc08c3800 panic() at 0xffffffff80b93203 = panic+0x43/frame 0xfffffe0fc08c3860 trap_fatal() at 0xffffffff81069b07 = trap_fatal+0x387/frame 0xfffffe0fc08c38c0 trap_pfault() at 0xffffffff81069ba9 = trap_pfault+0x99/frame 0xfffffe0fc08c3920 trap() at 0xffffffff810691a5 = trap+0x2a5/frame 0xfffffe0fc08c3a30 calltrap() at 0xffffffff8103edb8 = calltrap+0x8/frame 0xfffffe0fc08c3a30 --- trap 0xc, rip = 0, rsp = 0xfffffe0fc08c3b08, rbp = 0xfffffe0fc08c3b80 --- ??() at 0/frame 0xfffffe0fc08c3b80 taskqueue_thread_loop() at 0xffffffff80bf3214 = taskqueue_thread_loop+0x94/frame 0xfffffe0fc08c3bb0 fork_exit() at 0xffffffff80b503c0 = fork_exit+0x80/frame 0xfffffe0fc08c3bf0 fork_trampoline() at 0xffffffff8103fdfe = fork_trampoline+0xe/frame 0xfffffe0fc08c3bf0 --- trap 0, rip = 0, rsp = 0, rbp = 0 --- KDB: enter: panic __curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:55 55 __asm("movq %%gs:%P1,%0" : "=r" (td) : "n" (offsetof(struct pcpu, (kgdb) #0 __curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:55 #1 doadump (textdump=0) at /usr/src/sys/kern/kern_shutdown.c:394 #2 0xffffffff804a1eaa in db_dump (dummy=<optimized out>, dummy2=<unavailable>, dummy3=<unavailable>, dummy4=<unavailable>) at /usr/src/sys/ddb/db_command.c:575 #3 0xffffffff804a1c6c in db_command (last_cmdp=<optimized out>, cmd_table=<optimized out>, dopager=1) at /usr/src/sys/ddb/db_command.c:482 #4 0xffffffff804a19dd in db_command_loop () at /usr/src/sys/ddb/db_command.c:535 #5 0xffffffff804a4c48 in db_trap (type=<optimized out>, code=<optimized out>) at /usr/src/sys/ddb/db_main.c:253 #6 0xffffffff80bdde34 in kdb_trap (type=3, code=0, tf=<optimized out>) at /usr/src/sys/kern/subr_kdb.c:699 #7 0xffffffff810696b8 in trap (frame=0xfffffe0fc08c36e0) at /usr/src/sys/amd64/amd64/trap.c:578 #8 <signal handler called> #9 kdb_enter (why=0xffffffff8122ff12 "panic", msg=<optimized out>) at /usr/src/sys/kern/subr_kdb.c:486 #10 0xffffffff80b9346e in vpanic (fmt=<optimized out>, ap=<optimized out>) at /usr/src/sys/kern/kern_shutdown.c:902 #11 0xffffffff80b93203 in panic ( fmt=0xffffffff81c7f298 <cnputs_mtx> "\326/\037\201\377\377\377\377") at /usr/src/sys/kern/kern_shutdown.c:839 #2 0xffffffff804a1eaa in db_dump (dummy=<optimized out>, dummy2=<unavailable>, dummy3=<unavailable>, dummy4=<unavailable>) at /usr/src/sys/ddb/db_command.c:575 #3 0xffffffff804a1c6c in db_command (last_cmdp=<optimized out>, cmd_table=<optimized out>, dopager=1) at /usr/src/sys/ddb/db_command.c:482 #4 0xffffffff804a19dd in db_command_loop () at /usr/src/sys/ddb/db_command.c:535 #5 0xffffffff804a4c48 in db_trap (type=<optimized out>, code=<optimized out>) at /usr/src/sys/ddb/db_main.c:253 #6 0xffffffff80bdde34 in kdb_trap (type=3, code=0, tf=<optimized out>) at /usr/src/sys/kern/subr_kdb.c:699 #7 0xffffffff810696b8 in trap (frame=0xfffffe0fc08c36e0) at /usr/src/sys/amd64/amd64/trap.c:578 #8 <signal handler called> #9 kdb_enter (why=0xffffffff8122ff12 "panic", msg=<optimized out>) at /usr/src/sys/kern/subr_kdb.c:486 #10 0xffffffff80b9346e in vpanic (fmt=<optimized out>, ap=<optimized out>) at /usr/src/sys/kern/kern_shutdown.c:902 #11 0xffffffff80b93203 in panic ( fmt=0xffffffff81c7f298 <cnputs_mtx> "\326/\037\201\377\377\377\377") at /usr/src/sys/kern/kern_shutdown.c:839 #12 0xffffffff81069b07 in trap_fatal (frame=0xfffffe0fc08c3a40, eva=0) at /usr/src/sys/amd64/amd64/trap.c:919 #13 0xffffffff81069ba9 in trap_pfault (frame=0xfffffe0fc08c3a40, usermode=<optimized out>, signo=<optimized out>, ucode=<optimized out>) at /usr/src/sys/amd64/amd64/trap.c:736 #14 0xffffffff810691a5 in trap (frame=0xfffffe0fc08c3a40) at /usr/src/sys/amd64/amd64/trap.c:400 #15 <signal handler called> #16 0x0000000000000000 in ?? () #17 0xffffffff80bf219a in taskqueue_run_locked (queue=0xfffff8000f1e9100) at /usr/src/sys/kern/subr_taskqueue.c:476 #18 0xffffffff80bf3214 in taskqueue_thread_loop (arg=<optimized out>) at /usr/src/sys/kern/subr_taskqueue.c:793 #19 0xffffffff80b503c0 in fork_exit ( callout=0xffffffff80bf3180 <taskqueue_thread_loop>, arg=0xfffffe1052453148, frame=0xfffffe0fc08c3c00) at /usr/src/sys/kern/kern_fork.c:1053 #20 <signal handler called> (kgdb) Please see http://www.catwhisker.org/~david/FreeBSD/head/r361830/ for the crasah cump, core.txt file, and anything else I think to put there that might be useful. http://www.catwhisker.org/~david/FreeBSD/history/ has pointers to recent copies of dmesg.boot from a verbose boot and sundry other bits of trivia, some of which may be of use. Peace, david -- David H. Wolfskill david_at_catwhisker.org "... we distance ourselves from the incendiary language of this President." -- Bishop Mariann Edgar Budde of the Episcopal Diocese of Washington See http://www.catwhisker.org/~david/publickey.gpg for my public key.
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