[OpenSIPS-Devel] [ opensips-Bugs-3413995 ] PUBLISH handling causes segfault through update_presentity
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Sun Oct 2 14:58:34 CEST 2011
Bugs item #3413995, was opened at 2011-09-26 14:47
Message generated for change (Comment added) made by anca_vamanu
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Category: modules
Group: 1.7.x
>Status: Closed
>Resolution: Fixed
Priority: 5
Private: No
Submitted By: Walter Doekes (wdoekes)
Assigned to: Nobody/Anonymous (nobody)
Summary: PUBLISH handling causes segfault through update_presentity
Initial Comment:
Hi,
update_presentity() [modules/presence/presentity.c] calls
publ_notify(...&body...) [modules/presence/notify.c where body is allocated on the stack
get_p_notify_body(...publ_body...) [modules/presence/notify.c] attempts to free this
This results in a segfault obviously.
Ugly fix: check for publ_body while doing the Free loop.
Regards,
Walter Doekes
OSSO B.V.
P.S. This bug is not present in 1.6, but is present in trunk and 1.7.
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>Comment By: Anca Vamanu (anca_vamanu)
Date: 2011-10-02 15:58
Message:
Hi Walter,
Thank you for the fix for this. It is applied in both trunk and 1.7.
Regards,
Anca
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Comment By: Walter Doekes (wdoekes)
Date: 2011-09-28 09:37
Message:
I added a new patch, because after fixing the crash, a memory leak became
apparent. (publ_body overwrote an allocated var before freeing it)
The patch also cleans up a bit of the code in the neighbourhood:
- no redundant memsets
- some code formatting
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