Hi
And this is the gdb output for another crash from today as well (very likely the same
bug):
http://pastebin.com/0XU2BRgS
gdb :
(gdb) frame 0
#0 qm_detach_free (qm=0x7f563a226010, size=64) at mem/q_malloc.c:269
269in mem/q_malloc.c
(gdb)
#0 qm_detach_free (qm=0x7f563a226010, size=64) at mem/q_malloc.c:269
269in mem/q_malloc.c
(gdb) p *frag
$5 = {size = 64, u = {nxt_free = 0x7f563a3ee550, is_free = 140008321115472}}
(gdb)
$6 = {size = 64, u = {nxt_free = 0x7f563a3ee550, is_free = 140008321115472}}
(gdb)
$7 = {size = 64, u = {nxt_free = 0x7f563a3ee550, is_free = 140008321115472}}
(gdb) p *((char*)frag + sizeof(struct qm_frag))
$8 = 1 '\001'
Regards,
Dragos
On , Dragos Oancea <droancea(a)yahoo.com> wrote:
Hi
Here is the output:
gdb)
(gdb) frame 0
#0 qm_detach_free (qm=0x7fd96175e010, size=112) at mem/q_malloc.c:266
266in mem/q_malloc.c
(gdb)
#0 qm_detach_free (qm=0x7fd96175e010, size=112) at mem/q_malloc.c:266
266in mem/q_malloc.c
(gdb) p *frag
$1 = {size = 7599108840079127868, u = {nxt_free = 0x3965663931343a64, is_free =
4135824228634344036}}
(gdb)
$2 = {size = 7599108840079127868, u = {nxt_free = 0x3965663931343a64, is_free =
4135824228634344036}}
(gdb)
$3 = {size = 7599108840079127868, u = {nxt_free = 0x3965663931343a64, is_free =
4135824228634344036}}
(gdb) p *((char*)frag + sizeof(struct qm_frag))
$4 = 99 'c'
Is it okay to run with MEMDBG=1 in production ? Wouldn't it make it a little slow ?
Just let me know if u want so see something else with gdb. Unfortunally I do not have SIP
traces, but I have the core file and some logs.
Regards,
Dragos
On Thursday, November 21, 2013 6:50 PM, Daniel-Constantin Mierla <miconda(a)gmail.com>
wrote:
Hello,
can you provde the output in gdb for:
frame 0 p *frag p *((char*)frag + sizeof(struct qm_frag))
There were similar reports, so apparently there is a buffer overflow somewhere.
You should update to latest git branch 4.0, because there were
some other fixes from 4.0.3. With this occasion, you should set
MEMDBG=1 in Makefile.defs before recompiling the new version to be
able to catch easier the overwrites of memory.
Cheers,
Daniel
On 11/21/13 6:36 PM, Dragos Oancea wrote:
Hello
We had this crash today with kamailio 4.0.3 .
It ran stable for few weeks until this crash.
GDB here:
http://pastebin.com/rACV31z8
Regards,
Dragos
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