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The following task has a new comment added:
FS#454 - Crash in core when freeing shm dup'ed request
User who did this - Hugh Waite (hugh.waite)
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(gdb) frame 5
#5 0x000000000054fea1 in clean_hdr_field (hf=0x7fd11837aa18) at parser/hf.c:114
114 free_to(hf->parsed);
(gdb) p *hf
$18 = {type = HDR_FROM_T, name = {
s = 0x7fd11837a7b6 "From: <sip:nm@nm>;tag=root\r\nTo:
<sip:nm2@nm2>\r\nCall-ID: [email protected]\r\nCSeq: 42 OPTIONS\r\nMax-Forwards:
15\r\nContent-Length: 0\r\nContact: <sip:nm@nm>\r\nAccept:
application/sdp\r\n\r\n", len = 4},
body = {s = 0x7fd11837a7bc "<sip:nm@nm>;tag=root\r\nTo:
<sip:nm2@nm2>\r\nCall-ID: [email protected]\r\nCSeq: 42 OPTIONS\r\nMax-Forwards:
15\r\nContent-Length: 0\r\nContact: <sip:nm@nm>\r\nAccept:
application/sdp\r\n\r\n", len = 20},
len = 28, **parsed = 0x7fd12559ee28**, next = 0x7fd11837aa58}
In the shared memory structure, **parsed = 0x7fd12559ee28** which is in pkg
memory.
I did a different test by adding 'xlog("L_WARN", " From tag is $ft")' to the
cfg file. Because this forces parsing of the from body before duplicating, it
did not cause a crash.
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More information can be found at the following URL:
http://sip-router.org/tracker/index.php?do=details&task_id=454#comment1564
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