[Bug 259164] FreeBSD 13.0-STABLE mpd5-5.9 panic

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259164

--- Comment #2 from Anatoliy Nebrat <tolich.net@gmail.com> ---
FreeBSD 13.0-STABLE #2 stable/13-n247718-00595201ad4: Wed Oct 20 19:39:49 EEST
2021


Fatal trap 12: page fault while in kernel mode
cpuid = 2; apic id = 04
fault virtual address   = 0x50
fault code              = supervisor read data, page not present
instruction pointer     = 0x20:0xffffffff82b74968
stack pointer           = 0x28:0xfffffe00d2974a90
frame pointer           = 0x28:0xfffffe00d2974b10
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         = 47936 (mpd5)
trap number             = 12
panic: page fault
cpuid = 2
time = 1636114816
KDB: stack backtrace:
#0 0xffffffff80c76b75 at kdb_backtrace+0x65
#1 0xffffffff80c28a47 at vpanic+0x187
#2 0xffffffff80c288b3 at panic+0x43
#3 0xffffffff810b3447 at trap_fatal+0x387
#4 0xffffffff810b349f at trap_pfault+0x4f
#5 0xffffffff810b2b1a at trap+0x26a
#6 0xffffffff81089a78 at calltrap+0x8
#7 0xffffffff82b744e6 at ng_snd_item+0x1c6
#8 0xffffffff82b6f63f at ngd_send+0x10f
#9 0xffffffff80cc8f7a at sosend_generic+0x62a
#10 0xffffffff80cc94f0 at sosend+0x50
#11 0xffffffff80cd02fe at kern_sendit+0x20e
#12 0xffffffff80cd0707 at sendit+0x1e7
#13 0xffffffff80cd050d at sys_sendto+0x4d
#14 0xffffffff810b3d3c at amd64_syscall+0x10c
#15 0xffffffff8108a38b at fast_syscall_common+0xf8
Uptime: 15d11h40m31s
Dumping 1709 out of 8123 MB:..1%..11%..21%..31%..41%..51%..61%..71%..81%..91%

__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=<optimized out>)
    at /usr/src/sys/kern/kern_shutdown.c:399
#2  0xffffffff80c28646 in kern_reboot (howto=260)
    at /usr/src/sys/kern/kern_shutdown.c:487
#3  0xffffffff80c28ab6 in vpanic (fmt=0xffffffff811ae3d0 "%s",
    ap=<optimized out>) at /usr/src/sys/kern/kern_shutdown.c:920
#4  0xffffffff80c288b3 in panic (fmt=<unavailable>)
    at /usr/src/sys/kern/kern_shutdown.c:844
#5  0xffffffff810b3447 in trap_fatal (frame=0xfffffe00d29749d0, eva=80)
    at /usr/src/sys/amd64/amd64/trap.c:941
#6  0xffffffff810b349f in trap_pfault (frame=frame@entry=0xfffffe00d29749d0,
    usermode=false, signo=<optimized out>, signo@entry=0x0,
    ucode=<optimized out>, ucode@entry=0x0)
    at /usr/src/sys/amd64/amd64/trap.c:760
#7  0xffffffff810b2b1a in trap (frame=0xfffffe00d29749d0)
    at /usr/src/sys/amd64/amd64/trap.c:438
#8  <signal handler called>
#9  0xffffffff82b74968 in ng_apply_item (node=node@entry=0xfffff80029035800,
    item=item@entry=0xfffff80042c40100, rw=0)
    at /usr/src/sys/netgraph/ng_base.c:2402
#10 0xffffffff82b744e6 in ng_snd_item (item=item@entry=0xfffff80042c40100,
    flags=flags@entry=0) at /usr/src/sys/netgraph/ng_base.c:2324
#11 0xffffffff82b6f63f in ngd_send (so=<optimized out>,
    flags=<optimized out>, m=0x0, addr=<optimized out>, control=0x0,
    td=<optimized out>) at /usr/src/sys/netgraph/ng_socket.c:480
#12 0xffffffff80cc8f7a in sosend_generic (so=0xfffff80042cb6760,
    addr=0xfffff80201d0fec0, uio=<optimized out>, top=0xfffff80215de3900,
    control=0x0, flags=0, td=0xfffffe00d2382020)
    at /usr/src/sys/kern/uipc_socket.c:1753
#13 0xffffffff80cc94f0 in sosend (so=0xfffff80029035800,
    so@entry=0xfffff80042cb6760, addr=0xfffff80042c40100, uio=0x0,
    uio@entry=0xfffffe00d2974cd8, top=0xffffffffffffffff, top@entry=0x0,
    control=control@entry=0x0, flags=331884416, flags@entry=0,
    td=0xfffffe00d2382020) at /usr/src/sys/kern/uipc_socket.c:1803
#14 0xffffffff80cd02fe in kern_sendit (td=<optimized out>,
    td@entry=0xfffffe00d2382020, s=7, mp=<optimized out>,
    mp@entry=0xfffffe00d2974dc0, flags=0, control=0x0,
    segflg=segflg@entry=UIO_USERSPACE)
    at /usr/src/sys/kern/uipc_syscalls.c:790
#15 0xffffffff80cd0707 in sendit (td=0xfffffe00d2382020, s=1120141568,
    mp=mp@entry=0xfffffe00d2974dc0, flags=-1)
    at /usr/src/sys/kern/uipc_syscalls.c:715
#16 0xffffffff80cd050d in sys_sendto (td=0xfffff80029035800,
    uap=<optimized out>) at /usr/src/sys/kern/uipc_syscalls.c:833
#17 0xffffffff810b3d3c in syscallenter (td=0xfffffe00d2382020)
    at /usr/src/sys/amd64/amd64/../../kern/subr_syscall.c:189
#18 amd64_syscall (td=0xfffffe00d2382020, traced=0)
    at /usr/src/sys/amd64/amd64/trap.c:1182
#19 <signal handler called>
#20 0x00000008008c139a in ?? ()
Backtrace stopped: Cannot access memory at address 0x7fffdfffdbe8
(kgdb)

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