Re: shutdown freeze and forced unmounts

[Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxx>]

:I run it from gdb to start with and when I try to kill it via gdb it
:hangs.  
:
:
:(kgdb) thread 50
:[Switching to thread 50 (Thread 0xdd919e00)]#0  lwkt_switch () at
:thread2.h:177
:177         globaldata_t gd = curtd->td_gd;
:(kgdb) bt
:#0  lwkt_switch () at thread2.h:177
:#1  0xc020c4b1 in tsleep (ident=0xd68a9ac0, flags=256, 
:    wmesg=0xc0429363 "pause", timo=0)
:    at /home/josepht/src/vksrc.cvs.2/sys/kern/kern_synch.c:473
:#2  0xc01ffb51 in kern_sigsuspend (set=0x0)
:    at /home/josepht/src/vksrc.cvs.2/sys/kern/kern_sig.c:551
:#3  0xc01ffb94 in sys_sigsuspend (uap=0x0)
:    at /home/josepht/src/vksrc.cvs.2/sys/kern/kern_sig.c:571
:#4  0xc03db1a8 in syscall2 (frame=0xdd996d40)
:    at
:/home/josepht/src/vksrc.cvs.2/sys/platform/pc32/i386/trap.c:1340
:#5  0xc03c2b55 in Xint0x80_syscall ()
:    at
:/home/josepht/src/vksrc.cvs.2/sys/platform/pc32/i386/exception.s:872
:
:Joe

    This kinda sounds like a bad interaction between gdb and the vkernel.

    Try running the vkernel normally, without gdb.  Get it to hang while
    halting, and see if you can kill -9 the vkernel process(es) from another
    xterm.

					-Matt
					Matthew Dillon 
					<dillon@backplane.com>