Re: [2.6.21.1] totally hanging altough not crashed
- From: Folkert van Heusden <folkert@xxxxxxxxxxxxxx>
- Date: Fri, 20 Jul 2007 22:22:32 +0200
One of my systems running 2.6.21.1 on a P4 with HT and 2GB of ramLots of processes are in uninterruptible wait at
occasionally crashes. Not with an oops or panic, it just suddenly stops
doing anything. It still lets you ping and it still forwards ip traffic
but you can't login: not via ssh and not on the console - pressing enter
brings the cursor to the next line and that's it. It is NOT swapping at
all, in fact alt+sysrq+m says that there's still plenty of memory and
swap available:
start_this_handle+0x208/0x365. Can you find out what line of code
that matches? (There are a few of those waits in that function.)
I hope I follow the correct procedure but in any case gdb tells me this:
0 root@muur:/usr/src/linux$ gdb ./vmlinux
GNU gdb 6.5
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i486-slackware-linux"...l *Using host libthread_db library "/lib/tls/libthread_db.so.1".
(gdb) l *c10c23a0
No symbol "c10c23a0" in current context.
(gdb) p start_this_handle
$1 = {int (journal_t *, handle_t *)} 0xc10c7614 <start_this_handle>
(gdb) l *0xC10C7979
0xc10c7979 is in new_handle (fs/jbd/transaction.c:238).
233 return ret;
234 }
235
236 /* Allocate a new handle. This should probably be in a slab... */
237 static handle_t *new_handle(int nblocks)
238 {
239 handle_t *handle = jbd_alloc_handle(GFP_NOFS);
240 if (!handle)
241 return NULL;
242 memset(handle, 0, sizeof(*handle));
(gdb) l *0xC10C781C
0xc10c781c is in start_this_handle (fs/jbd/transaction.c:155).
150
151 prepare_to_wait(&journal->j_wait_transaction_locked,
152 &wait, TASK_UNINTERRUPTIBLE);
153 spin_unlock(&journal->j_state_lock);
154 schedule();
155 finish_wait(&journal->j_wait_transaction_locked, &wait);
156 goto repeat;
157 }
158
159 /*
(gdb)
Folkert van Heusden
--
www.vanheusden.com/multitail - win een vlaai van multivlaai! zorg
ervoor dat multitail opgenomen wordt in Fedora Core, AIX, Solaris of
HP/UX en win een vlaai naar keuze
----------------------------------------------------------------------
Phone: +31-6-41278122, PGP-key: 1F28D8AE, www.vanheusden.com
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
- References:
- [2.6.21.1] totally hanging altough not crashed
- From: Folkert van Heusden
- Re: [2.6.21.1] totally hanging altough not crashed
- From: Chuck Ebbert
- [2.6.21.1] totally hanging altough not crashed
- Prev by Date: Re: [linux-pm] Re: Hibernation considerations
- Next by Date: Re: blackfin - cmpxchg not atomic ?
- Previous by thread: Re: [2.6.21.1] totally hanging altough not crashed
- Next by thread: Re: [2.6.21.1] totally hanging altough not crashed
- Index(es):
Relevant Pages
|
