[Panic] Removing of the Palm during select syscall causes panic

[Oleg Sidorkin]

Hello,

I'm running 7.0-Stable on the ASUS P5K-VM + Intel Q6600 box.
If Palm device is disconnected after synchronization, system crashes with 
following stacktrace:

#0  doadump () at pcpu.h:194
#1  0x0000000000000004 in ?? ()
#2  0xffffffff802bea49 in boot (howto=260) 
at /usr/src/sys/kern/kern_shutdown.c:409
#3  0xffffffff802bee4d in panic (fmt=0x104 <Address 0x104 out of bounds>) 
at /usr/src/sys/kern/kern_shutdown.c:563
#4  0xffffffff804ccc84 in trap_fatal (frame=0xffffff0041595350, 
eva=18446742974491038824) at /usr/src/sys/amd64/amd64/trap.c:724
#5  0xffffffff804cd055 in trap_pfault (frame=0xffffffffaf7607d0, usermode=0) 
at /usr/src/sys/amd64/amd64/trap.c:641
#6  0xffffffff804cd998 in trap (frame=0xffffffffaf7607d0) 
at /usr/src/sys/amd64/amd64/trap.c:410
#7  0xffffffff804b35fe in calltrap () 
at /usr/src/sys/amd64/amd64/exception.S:169
#8  0xffffffff8028d842 in giant_poll (dev=0xffffff000ddf6600, events=64, 
td=0xffffff0041595350) at /usr/src/sys/kern/kern_conf.c:385
#9  0xffffffff8025474e in devfs_poll_f (fp=Variable "fp" is not available.
) at /usr/src/sys/fs/devfs/devfs_vnops.c:845
#10 0xffffffff802f61f6 in kern_select (td=0xffffff0041595350, nd=11, 
fd_in=0x7fffffbfea90, fd_ou=0x0, fd_ex=0x0, tvp=Variable "tvp" is not 
available.
) at file.h:277
#11 0xffffffff802f6611 in select (td=0xffffff0041595350, 
uap=0xffffffffaf760be0) at /usr/src/sys/kern/sys_generic.c:663
#12 0xffffffff804cd2d7 in syscall (frame=0xffffffffaf760c70) 
at /usr/src/sys/amd64/amd64/trap.c:852
#13 0xffffffff804b380b in Xfast_syscall () 
at /usr/src/sys/amd64/amd64/exception.S:290
#14 0x0000000804579d6c in ?? ()
Previous frame inner to this frame (corrupt stack?)

Does anyone have any ideas?