Repeated kernel panic on 11.2-RELEASE-p7

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Repeated kernel panic on 11.2-RELEASE-p7

freebsd-stable mailing list
Dear list,

After some time, I have again experienced a kernel panic on a (physical)
server, running Freebsd 11.2-RELEASE-p7 with custom/debug kernel, ZFS root.

Fatal trap 9: general protection fault while in kernel mode
cpuid = 2; apic id = 02
instruction pointer    = 0x20:0xffffffff82299013
stack pointer            = 0x28:0xfffffe0352893ad0
frame pointer            = 0x28:0xfffffe0352893b10
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        = 9 (dbuf_evict_thread)
trap number        = 9
panic: general protection fault
cpuid = 2
KDB: stack backtrace:
#0 0xffffffff80b3d567 at kdb_backtrace+0x67
#1 0xffffffff80af6b07 at vpanic+0x177
#2 0xffffffff80af6983 at panic+0x43
#3 0xffffffff80f77fdf at trap_fatal+0x35f
#4 0xffffffff80f7759e at trap+0x5e
#5 0xffffffff80f5807c at calltrap+0x8
#6 0xffffffff8229c049 at dbuf_evict_one+0xe9
#7 0xffffffff82297a15 at dbuf_evict_thread+0x1a5
#8 0xffffffff80aba083 at fork_exit+0x83
#9 0xffffffff80f58f9e at fork_trampoline+0xe
Uptime: 20d6h13m55s
Dumping 2593 out of 12248
MB:..1%..11%..21%..31%..41%..51%..61%..71%..81%..91%

I have used "crashinfo" utility to generate the text file which is
available at this URL: http://www.ocpea.com/dump/core-3.txt.

All advice is deeply appreciated as this is a production server. :)

Kind regards,
Jurij
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