bpfdetach blocked on lck_mtx_lock
bpfdetach blocked on lck_mtx_lock
- Subject: bpfdetach blocked on lck_mtx_lock
- From: "Bhavesh Davda" <email@hidden>
- Date: Fri, 16 Feb 2007 14:36:42 -0800
I've got a P_WEXIT state process stuck in bpfdetach while closing all
its fds from proc_exit().
I can't figure out why lck_mtx_lock() blocked trying to lock the
bpf_mlock mutex. None of the other processes/threads in the system
seem to be in anything related to bpf code.
How do I debug this?
Here's its partial stack backtrace (sanitized):
#0 0x001354b9 in thread_invoke (old_thread=0x3d5cf78,
new_thread=0x3d5d9a4, reason=0) at
/SourceCache/xnu/xnu-792.13.8/osfmk/kern/sched_prim.c:1424
#1 0x001358e0 in thread_block_reason (continuation=0, parameter=0x0,
reason=0) at /SourceCache/xnu/xnu-792.13.8/osfmk/kern/sched_prim.c:1692
#2 0x0013596e in thread_block (continuation=0) at
/SourceCache/xnu/xnu-792.13.8/osfmk/kern/sched_prim.c:1714
#3 0x0012f488 in lck_mtx_lock_wait (lck=0x3821750, holder=0x3d5cf78)
at /SourceCache/xnu/xnu-792.13.8/osfmk/kern/locks.c:569
#4 0x00197a0c in lck_mtx_lock ()
#5 0x001fe8b6 in bpfdetach (ifp=0x41efa04) at
/SourceCache/xnu/xnu-792.13.8/bsd/net/bpf.c:1556
#6 0x002031fc in ifp_use_reached_zero (ifp=0x41efa04) at
/SourceCache/xnu/xnu-792.13.8/bsd/net/dlil.c:1605
#7 0x00203850 in dlil_if_detach (ifp=0x41efa04) at
/SourceCache/xnu/xnu-792.13.8/bsd/net/dlil.c:2447
#8 0x0021a7e5 in ifnet_detach (interface=0x41efa04) at
/SourceCache/xnu/xnu-792.13.8/bsd/net/kpi_interface.c:197
...
#11 0x003345be in ctl_disconnect (so=0x3f1b1d8) at
/SourceCache/xnu/xnu-792.13.8/bsd/kern/kern_control.c:378
#12 0x0035d2f0 in sodisconnectlocked (so=0x3f1b1d8) at
/SourceCache/xnu/xnu-792.13.8/bsd/kern/uipc_socket.c:1000
#13 0x0035ec48 in soclose_locked (so=0x3f1b1d8) at
/SourceCache/xnu/xnu-792.13.8/bsd/kern/uipc_socket.c:770
#14 0x0035ede1 in soclose (so=0x3f1b1d8) at
/SourceCache/xnu/xnu-792.13.8/bsd/kern/uipc_socket.c:826
#15 0x00330464 in closef_locked (fp=0x3a2c590, fg=0x3f84190,
p=0x3fcf5dc) at
/SourceCache/xnu/xnu-792.13.8/bsd/kern/kern_descrip.c:2767
#16 0x003305f6 in fdfree (p=0x3fcf5dc) at
/SourceCache/xnu/xnu-792.13.8/bsd/kern/kern_descrip.c:2283
#17 0x00337b2c in proc_exit (p=0x3fcf5dc) at
/SourceCache/xnu/xnu-792.13.8/bsd/kern/kern_exit.c:313
#18 0x0013b4ed in thread_terminate_self () at
/SourceCache/xnu/xnu-792.13.8/osfmk/kern/thread.c:302
#19 0x0013cd13 in special_handler (rh=0x3d5d220, thread=0x3d5cf78) at
/SourceCache/xnu/xnu-792.13.8/osfmk/kern/thread_act.c:787
#20 0x0013cb70 in act_execute_returnhandlers () at
/SourceCache/xnu/xnu-792.13.8/osfmk/kern/thread_act.c:696
#21 0x0012741d in ast_taken (reasons=4294967295, enable=1) at
/SourceCache/xnu/xnu-792.13.8/osfmk/kern/ast.c:154
#22 0x001a1e3d in i386_astintr (preemption=0) at
/SourceCache/xnu/xnu-792.13.8/osfmk/i386/trap.c:1061
#23 0x0019a836 in return_from_trap ()
--
Bhavesh P. Davda
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Darwin-kernel mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden