freebsd dumped core - see ./vmcore.0 Sat Aug 3 17:31:43 UTC 2019 FreeBSD freebsd 13.0-CURRENT FreeBSD 13.0-CURRENT r350103 GENERIC amd64 panic: page fault GNU gdb (GDB) 8.3 [GDB v8.3 for FreeBSD] Copyright (C) 2019 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-portbld-freebsd13.0". Type "show configuration" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /boot/kernel/kernel... Reading symbols from /usr/lib/debug//boot/kernel/kernel.debug... Unread portion of the kernel message buffer: Fatal trap 12: page fault while in kernel mode cpuid = 3; apic id = 03 fault virtual address = 0x38 fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff80a0ace1 stack pointer = 0x28:0xfffffe0017f97510 frame pointer = 0x28:0xfffffe0017f97510 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 = 1005 (devctl) trap number = 12 panic: page fault cpuid = 3 time = 1564812037 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0017f971d0 vpanic() at vpanic+0x19d/frame 0xfffffe0017f97220 panic() at panic+0x43/frame 0xfffffe0017f97280 trap_fatal() at trap_fatal+0x39c/frame 0xfffffe0017f972e0 trap_pfault() at trap_pfault+0x62/frame 0xfffffe0017f97330 trap() at trap+0x2b4/frame 0xfffffe0017f97440 calltrap() at calltrap+0x8/frame 0xfffffe0017f97440 --- trap 0xc, rip = 0xffffffff80a0ace1, rsp = 0xfffffe0017f97510, rbp = 0xfffffe0017f97510 --- uhub_probe() at uhub_probe+0x11/frame 0xfffffe0017f97510 device_probe_child() at device_probe_child+0x194/frame 0xfffffe0017f97570 device_probe() at device_probe+0x98/frame 0xfffffe0017f975a0 device_probe_and_attach() at device_probe_and_attach+0x32/frame 0xfffffe0017f975d0 devctl2_ioctl() at devctl2_ioctl+0x5e2/frame 0xfffffe0017f976a0 devfs_ioctl() at devfs_ioctl+0xca/frame 0xfffffe0017f976f0 VOP_IOCTL_APV() at VOP_IOCTL_APV+0x63/frame 0xfffffe0017f97710 vn_ioctl() at vn_ioctl+0x13d/frame 0xfffffe0017f97820 devfs_ioctl_f() at devfs_ioctl_f+0x1f/frame 0xfffffe0017f97840 kern_ioctl() at kern_ioctl+0x28a/frame 0xfffffe0017f978b0 sys_ioctl() at sys_ioctl+0x15d/frame 0xfffffe0017f97980 amd64_syscall() at amd64_syscall+0x2bb/frame 0xfffffe0017f97ab0 fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe0017f97ab0 --- syscall (54, FreeBSD ELF64, sys_ioctl), rip = 0x80041a31a, rsp = 0x7fffffffea38, rbp = 0x7fffffffeaf0 --- KDB: enter: panic __curthread () at /usr/src/sys/amd64/include/pcpu.h:246 warning: Source file is more recent than executable. 246 __asm("movq %%gs:%P1,%0" : "=r" (td) : "n" (OFFSETOF_CURTHREAD)); (kgdb) #0 __curthread () at /usr/src/sys/amd64/include/pcpu.h:246 #1 doadump (textdump=0) at /usr/src/sys/kern/kern_shutdown.c:392 #2 0xffffffff8049d27b in db_dump (dummy=, dummy2=, dummy3=, dummy4=) at /usr/src/sys/ddb/db_command.c:575 #3 0xffffffff8049d049 in db_command (last_cmdp=, cmd_table=, dopager=1) at /usr/src/sys/ddb/db_command.c:482 #4 0xffffffff8049cdc4 in db_command_loop () at /usr/src/sys/ddb/db_command.c:535 #5 0xffffffff8049ff6f in db_trap (type=, code=) at /usr/src/sys/ddb/db_main.c:252 #6 0xffffffff80c1522c in kdb_trap (type=3, code=0, tf=) at /usr/src/sys/kern/subr_kdb.c:692 #7 0xffffffff81099ba1 in trap (frame=0xfffffe0017f97100) at /usr/src/sys/amd64/amd64/trap.c:621 #8 #9 kdb_enter (why=0xffffffff8132cf49 "panic", msg=) at /usr/src/sys/kern/subr_kdb.c:479 #10 0xffffffff80bcad6a in vpanic (fmt=, ap=) at /usr/src/sys/kern/kern_shutdown.c:894 #11 0xffffffff80bcaae3 in panic ( fmt=0xffffffff81e88898 "\233\036/\201\377\377\377\377") at /usr/src/sys/kern/kern_shutdown.c:832 #12 0xffffffff81099ffc in trap_fatal (frame=0xfffffe0017f97450, eva=56) at /usr/src/sys/amd64/amd64/trap.c:943 #13 0xffffffff8109a062 in trap_pfault (frame=0xfffffe0017f97450, usermode=) at /usr/src/sys/amd64/amd64/trap.c:767 #14 0xffffffff81099644 in trap (frame=0xfffffe0017f97450) at /usr/src/sys/amd64/amd64/trap.c:443 #15 #16 uhub_probe (dev=) at /usr/src/sys/dev/usb/usb_hub.c:1114 #17 0xffffffff80c02574 in DEVICE_PROBE (dev=) at ./device_if.h:115 #18 device_probe_child (dev=0xfffff80003242b00, child=0xfffff800031ff400) at /usr/src/sys/kern/subr_bus.c:2150 #19 0xffffffff80c03388 in device_probe (dev=0xfffff800031ff400) at /usr/src/sys/kern/subr_bus.c:2897 #20 0xffffffff80c03442 in device_probe_and_attach (dev=0xfffff800031ff400) at /usr/src/sys/kern/subr_bus.c:2921 #21 0xffffffff80c08f22 in devctl2_ioctl (cdev=, cmd=, data=0xfffff8002bf80200 "uhub0", fflag=, td=) at /usr/src/sys/kern/subr_bus.c:1776 #22 0xffffffff80a8622a in devfs_ioctl (ap=0xfffffe0017f97728) at /usr/src/sys/fs/devfs/devfs_vnops.c:834 #23 0xffffffff81220263 in VOP_IOCTL_APV ( vop=0xffffffff81aeb458 , a=0xfffffe0017f97728) at vnode_if.c:1052 #24 0xffffffff80cb062d in vn_ioctl (fp=0xfffff80003cce960, com=, data=0xfffff8002bf80200, active_cred=0xfffff800032ba500, td=0x246) at /usr/src/sys/kern/vfs_vnops.c:1492 #25 0xffffffff80a868bf in devfs_ioctl_f (fp=0xfffff800031ff400, com=18446744071590345336, data=0x18, cred=0x0, td=0xfffff8002b3d1000) at /usr/src/sys/fs/devfs/devfs_vnops.c:766 #26 0xffffffff80c3ae2a in fo_ioctl (fp=, com=, data=0xffffffff81fd09d0 , active_cred=0x0, td=) at /usr/src/sys/sys/file.h:333 #27 kern_ioctl (td=, fd=, com=2157462531, data=0xffffffff81fd09d0 "") at /usr/src/sys/kern/sys_generic.c:800 #28 0xffffffff80c3ab2d in sys_ioctl (td=0xfffff8002b3d1000, uap=0xfffff8002b3d13c8) at /usr/src/sys/kern/sys_generic.c:712 #29 0xffffffff8109ab2b in syscallenter (td=0xfffff8002b3d1000) at /usr/src/sys/amd64/amd64/../../kern/subr_syscall.c:144 #30 amd64_syscall (td=0xfffff8002b3d1000, traced=0) at /usr/src/sys/amd64/amd64/trap.c:1180 #31 #32 0x000000080041a31a in ?? () Backtrace stopped: Cannot access memory at address 0x7fffffffea38 (kgdb)