https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=214923
--- Comment #8 from yjh0...@gmail.com ---
I got a coredump and backtrace:
root@foo:/usr/obj/usr/src/sys/DEBUG # kgdb kernel.debug /var/crash/vmcore.0
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This GDB was configured as "amd64-marcel-freebsd"...
Unread portion of the kernel message buffer:
panic: Bad link elm 0xfffff800158d0780 next->prev != elm
cpuid = 1
KDB: stack backtrace:
#0 0xffffffff80a80947 at kdb_backtrace+0x67
#1 0xffffffff80a3fb52 at vpanic+0x182
#2 0xffffffff80a3fbd3 at panic+0x43
#3 0xffffffff809f9d1a at knote_drop+0x28a
#4 0xffffffff809f9df3 at knote_fdclose+0xd3
#5 0xffffffff809eda25 at closefp+0x65
#6 0xffffffff80ea4426 at amd64_syscall+0x2f6
#7 0xffffffff80e8469b at Xfast_syscall+0xfb
Uptime: 4m58s
Dumping 227 out of 988 MB: (CTRL-C to abort)
..8%..15%..22%..36%..43%..57%..64%..71%..85%..92%
Reading symbols from /boot/kernel/zfs.ko...Reading symbols from
/usr/lib/debug//boot/kernel/zfs.ko.debug...done.
done.
Loaded symbols for /boot/kernel/zfs.ko
Reading symbols from /boot/kernel/opensolaris.ko...Reading symbols from
/usr/lib/debug//boot/kernel/opensolaris.ko.debug...done.
done.
Loaded symbols for /boot/kernel/opensolaris.ko
Reading symbols from /boot/kernel/uhid.ko...Reading symbols from
/usr/lib/debug//boot/kernel/uhid.ko.debug...done.
done.
Loaded symbols for /boot/kernel/uhid.ko
#0 doadump (textdump=<value optimized out>) at pcpu.h:221
221 __asm("movq %%gs:%1,%0" : "=r" (td)
(kgdb) bt
#0 doadump (textdump=<value optimized out>) at pcpu.h:221
#1 0xffffffff80a3f5d0 in kern_reboot (howto=<value optimized out>) at
/usr/src/sys/kern/kern_shutdown.c:366
#2 0xffffffff80a3fb8b in vpanic (fmt=<value optimized out>, ap=<value
optimized out>) at /usr/src/sys/kern/kern_shutdown.c:759
#3 0xffffffff80a3fbd3 in panic (fmt=0x0) at
/usr/src/sys/kern/kern_shutdown.c:690
#4 0xffffffff809f9d1a in knote_drop (kn=<value optimized out>, td=<value
optimized out>) at /usr/src/sys/kern/kern_event.c:2461
#5 0xffffffff809f9df3 in knote_fdclose (td=0xfffff80026a38a00, fd=232) at
/usr/src/sys/kern/kern_event.c:2370
#6 0xffffffff809eda25 in closefp (fdp=0xfffff800079a8450, fd=232,
fp=0xfffff80003fe1460, td=0xfffff80026a38a00, holdleaders=1) at
/usr/src/sys/kern/kern_descrip.c:1180
#7 0xffffffff80ea4426 in amd64_syscall (td=0xfffff80026a38a00, traced=<value
optimized out>) at subr_syscall.c:135
#8 0xffffffff80e8469b in Xfast_syscall () at
/usr/src/sys/amd64/amd64/exception.S:396
#9 0x000000080104a7ca in ?? ()
Previous frame inner to this frame (corrupt stack?)
Current language: auto; currently minimal
(kgdb)
I compiled kernel from git repo, releng/11.0 branch
(b416700da72fd8eab0a75d60f0634e254cbb9347)
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