Issue #2556 has been reported by tuxillo.
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Bug #2556: DragonFly v3.5.0.81.gd3479 - Process signal weirdness
http://bugs.dragonflybsd.org/issues/2556
Author: tuxillo
Status: New
Priority: Normal
Assignee:
Category:
Target version:
Hi,
tmux has a memory leak somewhere and it was causing a lot of swap memory to be
used. I started using truss(1) to see what it was doing and after 3-4 tracing
attempts the tmux process was stuck in status "stopevent". After sending to it
all sorts of signals (CONT, HUP, KILL) the process is kept stopped in the same
situation. I also tried disabling tracing with ktrace(1) but it didn't help.
Eventually I tried to reboot the virtual machine but it got stuck for around 10
minutes without actually being able to shutdown. Last step was dropping to DDB
and producing a dump. Dump is available on leaf on demand. See below the
backtrace of the thread involved (tmux process)
Best regards,
Antonio Huete
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(kgdb) thread 26
[Switching to thread 26 (pid 835/0, tmux)]
#0 0xffffffff8050dfb0 in lwkt_switch () at
/home/source/dfbsd/sys/kern/lwkt_thread.c:872
872 /home/source/dfbsd/sys/kern/lwkt_thread.c: No such file or directory.
(kgdb) bt
#0 0xffffffff8050dfb0 in lwkt_switch () at
/home/source/dfbsd/sys/kern/lwkt_thread.c:872
#1 0xffffffff80518f0e in tsleep (ident=ident@entry=0xffffffe071efc990,
flags=flags@entry=1024,
wmesg=wmesg@entry=0xffffffff8097e168 "stopevent", timo=timo@entry=0) at
/home/source/dfbsd/sys/kern/kern_synch.c:612
#2 0xffffffff80538091 in stopevent (p=p@entry=0xffffffe071efc780,
event=event@entry=4, val=val@entry=7)
at /home/source/dfbsd/sys/kern/sys_process.c:771
#3 0xffffffff808c5a7a in syscall2 (frame=0xffffffe07280e9f8) at
/home/source/dfbsd/sys/platform/pc64/x86_64/trap.c:1229
#4 0xffffffff808af75b in ?? () at
/home/source/dfbsd/sys/platform/pc64/x86_64/exception.S:323
#5 0x00000000000000c5 in ?? ()
#6 0x0000000000000000 in ?? ()
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