On Mon, Oct 02, 2006 at 09:31:36AM -0400, James Morris ([EMAIL PROTECTED])
wrote:
> What kind of traffic was running over the system? What is the IPsec and
> SELinux configuration?
I had login through ssh, started racoon and setup keys.
SElinu is configured by default in FC5 system with enforcing mode.
I switched off to different window and after some time, not immediately,
remote system stopped to answer.
There were no heavy traffic definitely.
It looks like some timeout expired and someone tried to do xfrm_lookup.
> Can you run gdb on vmlinux, find the start of xfrm_lookup then list what's
> at the EIP offset?
>
> (gdb) p xfrm_lookup
> $1 = {int (struct dst_entry **, struct flowi *, struct sock *, int)}
> 0xc02cc7e2 <xfrm_lookup>
> (gdb) l *(0xc02cc7e2 + 0x043d)
(gdb) p xfrm_lookup
$1 = {int (struct dst_entry **, struct flowi *, struct sock *, int)} 0xc0301326
<xfrm_lookup>
(gdb) l *(0xc0301326+0x043d)
0xc0301763 is in xfrm_lookup (include/asm/atomic.h:126).
121 */
122 static __inline__ int atomic_dec_and_test(atomic_t *v)
123 {
124 unsigned char c;
125
126 __asm__ __volatile__(
127 LOCK_PREFIX "decl %0; sete %1"
128 :"+m" (v->counter), "=qm" (c)
129 : : "memory");
130 return c != 0;
Probably reference counter is inside freed object...
> --
> James Morris
> <[EMAIL PROTECTED]>
--
Evgeniy Polyakov
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