https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=240060
Bug ID: 240060
Summary: Fatal trap 12: page fault while in kernel mode Cannot
access memory at address 0x7fffffffe8a8
Product: Base System
Version: 12.0-RELEASE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: b...@freebsd.org
Reporter: free...@sysctl.cz
Hello, i have problem with panics
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 = 0; apic id = 00
fault virtual address = 0x410
fault code = supervisor read data, page not present
instruction pointer = 0x20:0xffffffff80b7ac6d
stack pointer = 0x0:0xfffffe006a290660
frame pointer = 0x0:0xfffffe006a2906d0
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 = 74528 (wpa_supplicant)
trap number = 12
panic: page fault
cpuid = 0
time = 1566585018
KDB: stack backtrace:
#0 0xffffffff80be78d7 at kdb_backtrace+0x67
#1 0xffffffff80b9b4b3 at vpanic+0x1a3
#2 0xffffffff80b9b303 at panic+0x43
#3 0xffffffff81074bff at trap_fatal+0x35f
#4 0xffffffff81074c59 at trap_pfault+0x49
#5 0xffffffff8107427e at trap+0x29e
#6 0xffffffff8104f625 at calltrap+0x8
#7 0xffffffff80ba6813 at _sleep+0x2e3
#8 0xffffffff80bfa339 at taskqueue_drain+0xf9
#9 0xffffffff80cfee78 at ieee80211_waitfor_parent+0x28
#10 0xffffffff80ce4a82 at ieee80211_ioctl+0x422
#11 0xffffffff80c9ab6a at ifhwioctl+0xd4a
#12 0xffffffff80c9c0ff at ifioctl+0x45f
#13 0xffffffff80c04e9d at kern_ioctl+0x26d
#14 0xffffffff80c04bbe at sys_ioctl+0x15e
#15 0xffffffff810756d9 at amd64_syscall+0x369
#16 0xffffffff8104ff0d at fast_syscall_common+0x101
Uptime: 5h35m12s
Dumping 1383 out of 7943 MB:..2%..11%..21%..31%..41%..51%..61%..71%..81%..91%
__curthread () at ./machine/pcpu.h:234
234 ./machine/pcpu.h: No such file or directory.
(kgdb) bt
#0 __curthread () at ./machine/pcpu.h:234
#1 doadump (textdump=<optimized out>) at /usr/src/sys/kern/kern_shutdown.c:366
#2 0xffffffff80b9b09b in kern_reboot (howto=260) at
/usr/src/sys/kern/kern_shutdown.c:446
#3 0xffffffff80b9b513 in vpanic (fmt=<optimized out>, ap=0xfffffe006a2903b0)
at /usr/src/sys/kern/kern_shutdown.c:872
#4 0xffffffff80b9b303 in panic (fmt=<unavailable>) at
/usr/src/sys/kern/kern_shutdown.c:799
#5 0xffffffff81074bff in trap_fatal (frame=0xfffffe006a2905a0, eva=1040) at
/usr/src/sys/amd64/amd64/trap.c:929
#6 0xffffffff81074c59 in trap_pfault (frame=0xfffffe006a2905a0, usermode=0) at
/usr/src/sys/amd64/amd64/trap.c:765
#7 0xffffffff8107427e in trap (frame=0xfffffe006a2905a0) at
/usr/src/sys/amd64/amd64/trap.c:441
#8 <signal handler called>
#9 __mtx_lock_sleep (c=0xfffff8000ab50750, v=<optimized out>) at
/usr/src/sys/kern/kern_mutex.c:565
#10 0xffffffff80ba6813 in _sleep (ident=0xfffffe004d5a2138,
lock=0xfffff8000ab50738, priority=108, wmesg=0xffffffff8123a845 "-", sbt=0,
pr=0, flags=256)
at /usr/src/sys/kern/kern_synch.c:226
#11 0xffffffff80bfa339 in TQ_SLEEP (t=<error reading variable: Cannot access
memory at address 0x0>, tq=<optimized out>, p=<optimized out>,
m=<optimized out>, pri=<optimized out>, wm=<optimized out>) at
/usr/src/sys/kern/subr_taskqueue.c:124
#12 taskqueue_drain (queue=0xfffff8000ab50700, task=0xfffffe004d5a2138) at
/usr/src/sys/kern/subr_taskqueue.c:573
#13 0xffffffff80cfee78 in ieee80211_draintask (ic=0xfffffe004d5a2020, task=0x4)
at /usr/src/sys/net80211/ieee80211_var.h:794
#14 ieee80211_waitfor_parent (ic=0xfffffe004d5a2020) at
/usr/src/sys/net80211/ieee80211_proto.c:1440
#15 0xffffffff80ce4a82 in ieee80211_ioctl (ifp=0xfffff800b1cae800,
cmd=<optimized out>, data=<optimized out>) at
/usr/src/sys/net80211/ieee80211_ioctl.c:3535
#16 0xffffffff80c9ab6a in ifhwioctl (cmd=<optimized out>, ifp=<optimized out>,
data=0xfffffe006a290a10 "wlan0", td=<optimized out>)
at /usr/src/sys/net/if.c:2704
#17 0xffffffff80c9c0ff in ifioctl (so=0xfffff8023523b000, cmd=2149607696,
data=<optimized out>, td=0xfffff80217205000) at /usr/src/sys/net/if.c:3124
#18 0xffffffff80c04e9d in fo_ioctl (fp=<optimized out>, com=<optimized out>,
active_cred=0xfffff80217205000, td=<optimized out>, data=<optimized out>)
at /usr/src/sys/sys/file.h:330
#19 kern_ioctl (td=0xfffff80217205000, fd=4, com=2149607696,
data=0xffffffff82112320 <common_tss> "") at /usr/src/sys/kern/sys_generic.c:800
#20 0xffffffff80c04bbe in sys_ioctl (td=0xfffff80217205000,
uap=0xfffff802172053c0) at /usr/src/sys/kern/sys_generic.c:712
#21 0xffffffff810756d9 in syscallenter (td=<optimized out>) at
/usr/src/sys/amd64/amd64/../../kern/subr_syscall.c:135
#22 amd64_syscall (td=0xfffff80217205000, traced=0) at
/usr/src/sys/amd64/amd64/trap.c:1076
#23 <signal handler called>
#24 0x00000008008d911a in ?? ()
Backtrace stopped: Cannot access memory at address 0x7fffffffe8a8
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