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Re: remote debugging stubs (EXC_BAD_ACCESS)

From: Greg Buchholz
Subject: Re: remote debugging stubs (EXC_BAD_ACCESS)
Date: Wed, 10 Sep 2003 23:39:16 +0100 (BST)

On Wed, 10 Sep 2003, Marco Gerards wrote:

> Greg Buchholz <> writes:
> > Program received signal EXC_BAD_ACCESS, Could not access memory.
> > 0x0806c203 in _hurd_ports_use()
> Have a look at all thread and where they are.  Perhaps it isn't in
> _hurd_ports_use, but in another thread.  "info thr" for all threads
> and "thr 1" for thread one, etc.  Just have a look at all backtraces.

        Yeah, there's only one thread...

Attaching to program `/src/hurd/isofs/iso9660fs.static', pid 202

warning: Can't modify tracing state for pid 202: No signal thread
[Switching to thread 202.1]
(gdb) info threads
* 1 thread 202.1  0x0808d2dc in mach_msg_trap ()
(gdb) break diskfs_init_diskfs
Breakpoint 1 at 0x804b235: file init-init.c,
(gdb) c

Program received signal EXC_BAD_ACCESS, Could not access memory.
0x080842ad in _hurd_exit ()
(gdb) info threads
* 1 thread 202.1  0x080842ad in _hurd_exit ()
(gdb) bt
#0  0x080842ad in _hurd_exit ()
#1  0x08084582 in _exit ()
#2  0x0807a1d6 in exit ()
#3  0x0808bdca in argp_state_help ()
#4  0x0808be57 in argp_error ()
#5  0x08060565 in parse_type (arg=0xbfffffdf "device", state=0x1fe1c,
    parsed=0x8101688) at argp.c:292
#6  0x0808c3be in group_parse ()
#7  0x0808ce86 in parser_parse_opt ()
#8  0x0808cf58 in parser_parse_next ()
#9  0x0808d092 in argp_parse ()
#10 0x0804b3f6 in diskfs_init_main (startup_argp=0x0, argc=7, argv=0x1ff8c,
    store_parsed=0x80fa484, bootstrap=0x1ff08) at init-main.c:37
#11 0x080492ad in main (argc=7, argv=0x1ff8c) at main.c:150
#12 0x080764cc in __libc_start_main ()

...although this time is bombs on _hurd_exit.

Greg Buchholz

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