Date: Fri, 8 Jan 2016 06:05:18 -0800 From: David Wolfskill <david@catwhisker.org> To: current@freebsd.org Subject: panic: sbappendstream 1 [head/amd64 @r293419] Message-ID: <20160108140518.GM2781@albert.catwhisker.org>
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After the first panic, I rebuilt the kernel without -DNO_CLEAN; the
crash dump & other diagnostic info is from the clean build.
January 8, 2016 at 05:57:27 AM PST
FreeBSD freebeast.catwhisker.org 11.0-CURRENT FreeBSD 11.0-CURRENT #1954 r=
293419M/293420:1100093: Fri Jan 8 05:09:57 PST 2016 root@freebeast.cat=
whisker.org:/common/S4/obj/usr/src/sys/GENERIC amd64
panic: sbappendstream 1
=2E..
Unread portion of the kernel message buffer:
panic: sbappendstream 1
cpuid =3D 7
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe085e059=
5b0
vpanic() at vpanic+0x182/frame 0xfffffe085e059630
kassert_panic() at kassert_panic+0x126/frame 0xfffffe085e0596a0
sbappendstream_locked() at sbappendstream_locked+0xa5/frame 0xfffffe085e059=
6d0
uipc_send() at uipc_send+0x942/frame 0xfffffe085e059780
sosend_generic() at sosend_generic+0x42f/frame 0xfffffe085e059840
kern_sendit() at kern_sendit+0x21b/frame 0xfffffe085e0598f0
sendit() at sendit+0x126/frame 0xfffffe085e059940
sys_sendmsg() at sys_sendmsg+0x61/frame 0xfffffe085e0599a0
amd64_syscall() at amd64_syscall+0x2db/frame 0xfffffe085e059ab0
Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe085e059ab0
--- syscall (28, FreeBSD ELF64, sys_sendmsg), rip =3D 0x801270dfa, rsp =3D =
0x7fffffffa098, rbp =3D 0x7fffffffa0d0 ---
KDB: enter: panic
=2E..
Loaded symbols for /boot/kernel/autofs.ko
#0 doadump (textdump=3D0) at pcpu.h:221
221 pcpu.h: No such file or directory.
in pcpu.h
(kgdb) #0 doadump (textdump=3D0) at pcpu.h:221
#1 0xffffffff8038205b in db_dump (dummy=3D<value optimized out>, dummy2=3D=
false,=20
dummy3=3D0, dummy4=3D0x0) at /usr/src/sys/ddb/db_command.c:533
#2 0xffffffff80381e4e in db_command (cmd_table=3D0x0)
at /usr/src/sys/ddb/db_command.c:440
#3 0xffffffff80381be4 in db_command_loop ()
at /usr/src/sys/ddb/db_command.c:493
#4 0xffffffff8038467b in db_trap (type=3D<value optimized out>, code=3D0)
at /usr/src/sys/ddb/db_main.c:251
#5 0xffffffff80a5cfe3 in kdb_trap (type=3D3, code=3D0, tf=3D<value optimiz=
ed out>)
at /usr/src/sys/kern/subr_kdb.c:654
#6 0xffffffff80e6a2a8 in trap (frame=3D0xfffffe085e0594e0)
at /usr/src/sys/amd64/amd64/trap.c:549
#7 0xffffffff80e4a317 in calltrap ()
at /usr/src/sys/amd64/amd64/exception.S:234
#8 0xffffffff80a5c6cb in kdb_enter (why=3D0xffffffff8137af3c "panic",=20
msg=3D0x80 <Address 0x80 out of bounds>) at cpufunc.h:63
#9 0xffffffff80a1fb8f in vpanic (fmt=3D<value optimized out>,=20
ap=3D<value optimized out>) at /usr/src/sys/kern/kern_shutdown.c:750
#10 0xffffffff80a1f9e6 in kassert_panic (fmt=3D<value optimized out>)
at /usr/src/sys/kern/kern_shutdown.c:647
#11 0xffffffff80aa3375 in sbappendstream_locked (sb=3D0xfffff80044212378,=
=20
m=3D0xfffff800108c7200, flags=3D0) at /usr/src/sys/kern/uipc_sockbuf.c:=
642
#12 0xffffffff80ab1a42 in uipc_send (so=3D0xfffff80044212000, flags=3D0,=20
m=3D<value optimized out>, nam=3D0x0, control=3D<value optimized out>,=
=20
td=3D0xfffff8001078e9a0) at /usr/src/sys/kern/uipc_usrreq.c:984
#13 0xffffffff80aa5f5f in sosend_generic (so=3D0xfffff80044212000, addr=3D0=
x0,=20
uio=3D0xfffffe085e059890, top=3D<value optimized out>,=20
control=3D<value optimized out>, flags=3D<value optimized out>,=20
td=3D0xfffffe085e059880) at /usr/src/sys/kern/uipc_socket.c:1349
#14 0xffffffff80aac36b in kern_sendit (td=3D0xfffff8001078e9a0, s=3D6,=20
mp=3D<value optimized out>, flags=3D0, control=3D0x0, segflg=3DUIO_USER=
SPACE)
at /usr/src/sys/kern/uipc_syscalls.c:906
#15 0xffffffff80aac666 in sendit (td=3D0xfffff8001078e9a0,=20
s=3D<value optimized out>, mp=3D0xfffffe085e059958, flags=3D0)
at /usr/src/sys/kern/uipc_syscalls.c:833
#16 0xffffffff80aac6f1 in sys_sendmsg (td=3D0xfffff8001078e9a0,=20
uap=3D0xfffffe085e059a40) at /usr/src/sys/kern/uipc_syscalls.c:1035
#17 0xffffffff80e6b13b in amd64_syscall (td=3D0xfffff8001078e9a0, traced=3D=
0)
at subr_syscall.c:135
#18 0xffffffff80e4a5fb in Xfast_syscall ()
at /usr/src/sys/amd64/amd64/exception.S:394
#19 0x0000000801270dfa in ?? ()
Previous frame inner to this frame (corrupt stack?)
Current language: auto; currently minimal
(kgdb)=20
=2E....
As indicated above, this is with a GENERIC kernel. My laptop (running
a kernel built with the same sources, but a slightly customized kernel
config) gets to the point of allowing me to login (via xdm), but when I
fire off a command that creates xterms & tries to run tmux(1) in them,
locks up (as far as I can tell), and a power-cycle is needed to recover.
I can poke at the crash dump (given hints), make the dump and core.txt file
available.
Peace,
david
--=20
David H. Wolfskill david@catwhisker.org
Those who would murder in the name of God or prophet are blasphemous coward=
s.
See http://www.catwhisker.org/~david/publickey.gpg for my public key.
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