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not sure how $work is able to do this, but this panic floated in on the
breeze from the weekend.
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This GDB was configured as "amd64-marcel-freebsd"...
Unread portion of the kernel message buffer:
panic: Unlocked pipe passed to pipeunlock
cpuid =3D 3
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe048c695=
7e0
kdb_backtrace() at kdb_backtrace+0x39/frame 0xfffffe048c695890
vpanic() at vpanic+0x126/frame 0xfffffe048c6958d0
kassert_panic() at kassert_panic+0x136/frame 0xfffffe048c695940
pipe_write() at pipe_write+0xa00/frame 0xfffffe048c6959f0
dofilewrite() at dofilewrite+0x85/frame 0xfffffe048c695a40
kern_writev() at kern_writev+0x65/frame 0xfffffe048c695a90
sys_write() at sys_write+0x63/frame 0xfffffe048c695ae0
ia32_syscall() at ia32_syscall+0x255/frame 0xfffffe048c695bf0
Xint0x80_syscall() at Xint0x80_syscall+0x95/frame 0xfffffe048c695bf0
--- syscall (4, FreeBSD ELF32, sys_write), rip =3D 0x22430824, rsp =3D 0xff=
ff3fd8, rbp =3D 0xffff4004 ---
Uptime: 32d1h5m4s
Dumping 1975 out of 16358 MB:..1%..11%..21%..31%..41%..51%..61%..71%..81%..=
91%
------------
(kgdb) whe
#0 doadump (textdump=3D1) at pcpu.h:219
#1 0xffffffff805fb2a7 in kern_reboot (howto=3D260) at ../../../kern/kern_s=
hutdown.c:452
#2 0xffffffff805fb7b5 in vpanic (fmt=3D<value optimized out>, ap=3D<value =
optimized out>) at ../../../kern/kern_shutdown.c:759
#3 0xffffffff805fb646 in kassert_panic (fmt=3D<value optimized out>) at ..=
/../../kern/kern_shutdown.c:647
#4 0xffffffff8064fe10 in pipe_write (fp=3D0xfffff802d63445f0, uio=3D0xffff=
fe048c695ab0, active_cred=3D0x0, flags=3D0, td=3D0x0) at ../../../kern/sys_=
pipe.c:616
#5 0xffffffff8064cbc5 in dofilewrite (td=3D0xfffff801bb3ab920, fd=3D20, fp=
=3D0xfffff802d63445f0, auio=3D0xfffffe048c695ab0, offset=3D<value optimized=
out>, flags=3D0) at file.h:303
#6 0xffffffff8064c8d5 in kern_writev (td=3D0xfffff801bb3ab920, fd=3D20, au=
io=3D0xfffffe048c695ab0) at ../../../kern/sys_generic.c:467
#7 0xffffffff8064c863 in sys_write (td=3D<value optimized out>, uap=3D<val=
ue optimized out>) at ../../../kern/sys_generic.c:382
#8 0xffffffff80a332b5 in ia32_syscall (frame=3D0xfffffe048c695c00) at subr=
_syscall.c:135
#9 0xffffffff8095cdc5 in Xint0x80_syscall () at ia32_exception.S:73
#10 0x0000000022430824 in ?? ()
Previous frame inner to this frame (corrupt stack?)
Current language: auto; currently minimal
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