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[Opensync-users] SIGSEV during sync between evo2 and file
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From: A. <rem...@ya...> - 2006-01-09 18:35:25
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Hello
I had a SIGSEV during my first sync between evo2 and the file-sync
plugin.
My investigation sofar shows that it is related to the presence of
non-utf8 characters in the stuff sent by evo2.
in a first case, I was able to pinpoint the problem on the description
and I just removed the description of the event (see trace 1). It seems
that by updating the event, I changed something and it was better.
I had another problem, similar. see trace 2.
Looks like my problems are related to old entries, so I will purge evo2
to make sure I don't have the problem anymore. But it would be cool to
ensure that a SIGSEV cannot arise.
thus ...
I did a gdb session to understand where exactly was the SIGSEV. see
trace 3.
It seems that when vformat is creating a list of attributes that is not
valid, the function vcal_parse_attributes is not handling them well.
Using a for loop is maybe not a good idea in that function since there
are other location where the variable a is modified.
Regards
remyA
PS: trying to provide a diff later this night.
trace 1:
--------
[1136825381.689302]
Input vcal is:
BEGIN:VCALENDAR
PRODID:-//Ximian//NONSGML Evolution Calendar//EN
VERSION:2.0
METHOD:PUBLISH
BEGIN:VEVENT
ATTENDEE;CN=3DR=C3=A9my Amouroux;ROLE=3DREQ-PARTICIPANT;RSVP=3DTRUE;
PARTSTAT=3DACCEPTED:MAILTO:re...@am...
ORGANIZER:MAILTO:va...@am...
DTSTART:20050726T053000Z
DTEND:20050726T053000Z
TRANSP:OPAQUE
SEQUENCE:0
UID:
040000008200E00074C5B7101A82E0080000000070D7AE8F808CC50100000000000000001=
0
0000008C05F5F3D72E3B4C9A3BC7FBF434B6CD
DTSTAMP:20050719T144024Z
DESCRIPTION:Quand : mardi 26 juillet 2005 07:30-07:30 (GMT+01:00)
Bruxelles\, Copenhague\, Madrid\, Paris.\n\n*~*~*~*~*~*~*~*~*~*\n\nSi
tu
pouvais =C3=83=C2=AAtre l=C3=83 ce serait bien\n
SUMMARY:ATEc verification de la toiture Mr Domenec
PRIORITY:5
CLASS:PUBLIC
X-MICROSOFT-CDO-REPLYTIME:20050719T153821Z
CREATED:20050719T153821
LAST-MODIFIED:20050719T153821
END:VEVENT
END:VCALENDAR
[1136825381.689552]
Creating xml doc
[1136825381.689615]
parsing attributes
[1136825381.689674]
>>>>>>> vcal_parse_attributes(0xb6b51108, 0xac99ea8)
[1136825381.689734]
>>>>>>> vcal_handle_attribute(0xac94b80, 0xac99ea8, 0xac99cf0:PRODID)
[1136825381.689793]
Hook is: 0x1
[1136825381.689851]
<<<<<<< vcal_handle_attribute: Ignored
[1136825381.689910]
>>>>>>> vcal_handle_attribute(0xac94b80, 0xac99ea8, 0xac99f10:VERSION)
[1136825381.689969]
Hook is: 0x1
[1136825381.690027]
<<<<<<< vcal_handle_attribute: Ignored
[1136825381.690086]
>>>>>>> vcal_handle_attribute(0xac94b80, 0xac99ea8, 0xac9aaa8:METHOD)
[1136825381.690144]
Hook is: 0xdb9c3c
[1136825381.690200]
Handling method attribute
[1136825381.690264]
<<<<<<< vcal_handle_attribute
[1136825381.690330]
>>>>>>> vcal_parse_attributes(0xb6b510c8, 0xac9afb8)
[1136825381.690389]
<<<<<<< vcal_parse_attributes: Done
(log file ended her)
trace 2
-------
[1136826678.223093]
Input vcal is:
BEGIN:VCALENDAR
PRODID:-//Ximian//NONSGML Evolution Calendar//EN
VERSION:2.0
METHOD:PUBLISH
BEGIN:VEVENT
ATTENDEE;CN=3DR=C3=A9my Amouroux;ROLE=3DREQ-PARTICIPANT;RSVP=3DTRUE;
PARTSTAT=3DACCEPTED:MAILTO:rem...@ke...
ORGANIZER:MAILTO:va...@am...
DTSTART:20050922T060000Z
DTEND:20050922T080000Z
TRANSP:OPAQUE
SEQUENCE:0
UID:
040000008200E00074C5B7101A82E0080000000010E4575FC9AFC50100000000000000001=
0
000000B6F0CDF8F87227418E1C2A0DBE2BD607
DTSTAMP:20050902T121947Z
DESCRIPTION:Quand : jeudi 22 septembre 2005 08:00-10:00 (GMT+01:00)
Bruxelles\, Copenhague\, Madrid\, Paris.\n\n*~*~*~*~*~*~*~*~*~*\n\nTMV
St
Egreve 04/76/75/21/34\n\n\n\n
SUMMARY:Depannage Volet Budendorf
PRIORITY:5
CLASS:PUBLIC
X-MICROSOFT-CDO-REPLYTIME:20050902T135144Z
CREATED:20050902T135144
LAST-MODIFIED:20050902T135144
END:VEVENT
END:VCALENDAR
[1136826678.223346]
Creating xml doc
[1136826678.223411]
parsing attributes
[1136826678.223469]
>>>>>>> vcal_parse_attributes(0xb6b36108, 0xb1d915b8)
[1136826678.223529]
>>>>>>> vcal_handle_attribute(0xb1d8afb8, 0xb1d915b8,
0xb1d92110:PRODID)
[1136826678.223632]
Hook is: 0x1
[1136826678.223691]
<<<<<<< vcal_handle_attribute: Ignored
[1136826678.223750]
>>>>>>> vcal_handle_attribute(0xb1d8afb8, 0xb1d915b8,
0xb1d92130:VERSION)
[1136826678.223811]
Hook is: 0x1
[1136826678.223868]
<<<<<<< vcal_handle_attribute: Ignored
[1136826678.223927]
>>>>>>> vcal_handle_attribute(0xb1d8afb8, 0xb1d915b8,
0xb1d91540:METHOD)
[1136826678.223989]
Hook is: 0xe3dc3c
[1136826678.224046]
Handling method attribute
[1136826678.224111]
<<<<<<< vcal_handle_attribute
[1136826678.224176]
>>>>>>> vcal_parse_attributes(0xb6b360c8, 0xb1d92510)
[1136826678.224233]
<<<<<<< vcal_parse_attributes: Done
trace3:
------
Received a entry 20050525T023411Z-5011-100-1-5@remya with data of size 4
from member 1. Changetype ADDED
** (process:12799): WARNING **: invalid utf8 passed to VFormat. Limping
along.
** (process:12799): WARNING **: vcard ended without END:VCARD
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1229993040 (LWP 12804)]
0x003fcf3e in vcal_parse_attributes (hooks=3D0xb1624d58, table=3D0xb1624a=
b0,
paramtable=3D0xb1624ab0, attributes=3D0xb6afc108, root=3D0xb162c240)
at xml-vcal.c:676
676 for (a =3D *attributes; a; a =3D a->next) {
(gdb) print a
$1 =3D (GList *) 0x0
(gdb) print attributes
$2 =3D (GList **) 0xb6afc108
(gdb) print *attributes
$3 =3D (GList *) 0xb16233f8
(gdb) print *attributes-next
No symbol "next" in current context.
(gdb) print *attributes->next
$4 =3D {data =3D 0xb162b498, next =3D 0xb1623428, prev =3D 0xb16233f8}
(gdb) print *attributes->next->next
$5 =3D {data =3D 0xb162bfa8, next =3D 0xb1623440, prev =3D 0xb1623410}
(gdb) print **attr
Structure has no component named operator*.
(gdb) print *attr
$6 =3D {group =3D 0x0, name =3D 0xb16280b8 "BEGIN", params =3D 0x0, value=
s =3D
0xb1623434, decoded_values =3D 0xb1623458, encoding =3D VF_ENCODING_RAW,
encoding_set =3D 0}
(gdb) print *attr->values
$7 =3D {data =3D 0xb162b618, next =3D 0x0, prev =3D 0x0}
(gdb) print *attr->values->data
Attempt to dereference a generic pointer.
(gdb)
--=20
E-mail : Rem...@ya...
Yahoo Architecture Europe (http://www.yahoo.com/)
Yahoo Id: kelkooremya
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