bitlbee-plugin-skype segfaults

[openback@…]

I've installed Bitlbee and the Skype plugin via Bitlbee's repository. I can connect to Skype with it once, but if I close the IRC client and reopen it, it is unable to reconnect. The main problem, though, is that after a couple of tries, bitlbee segfaults.

Program received signal SIGSEGV, Segmentation fault.
skype_connected (data=0x80f4838, returncode=0, source=0x0, cond=B_EV_IO_READ)
    at /tmp/buildd/bitlbee-3.0.5+20120320+devel+900/protocols/skype/skype.c:1193
1193    /tmp/buildd/bitlbee-3.0.5+20120320+devel+900/protocols/skype/skype.c: No such file or directory.
        in /tmp/buildd/bitlbee-3.0.5+20120320+devel+900/protocols/skype/skype.c
(gdb) thread apply all backtrace

Thread 1 (Thread 0xb7beb6c0 (LWP 1608)):
#0  skype_connected (data=0x80f4838, returncode=0, source=0x0, cond=B_EV_IO_READ)
    at /tmp/buildd/bitlbee-3.0.5+20120320+devel+900/protocols/skype/skype.c:1193
#1  0x0807285b in ssl_handshake (data=0x80f46c0, source=16, cond=B_EV_IO_READ)
    at /tmp/buildd/bitlbee-3.0.5+20120320+devel+900/lib/ssl_gnutls.c:297
#2  0x0806bfe4 in b_event_passthrough (fd=16, event=2, data=0x80f51f0)
    at /tmp/buildd/bitlbee-3.0.5+20120320+devel+900/lib/events_libevent.c:147
#3  0xb7eeaee4 in event_base_loop () from /usr/lib/libevent-1.4.so.2
#4  0xb7eeb095 in event_base_dispatch () from /usr/lib/libevent-1.4.so.2
#5  0x0806c335 in b_main_run () at /tmp/buildd/bitlbee-3.0.5+20120320+devel+900/lib/events_libevent.c:86
#6  0x08069d05 in main (argc=2, argv=0xbffff834) at /tmp/buildd/bitlbee-3.0.5+20120320+devel+900/unix.c:18



(gdb) backtrace full
#0  skype_connected (data=0x80f4838, returncode=0, source=0x0, cond=B_EV_IO_READ)
    at /tmp/buildd/bitlbee-3.0.5+20120320+devel+900/protocols/skype/skype.c:1193
No locals.
#1  0x0807285b in ssl_handshake (data=0x80f46c0, source=16, cond=B_EV_IO_READ)
    at /tmp/buildd/bitlbee-3.0.5+20120320+devel+900/lib/ssl_gnutls.c:297
        st = <value optimized out>
        stver = 16
#2  0x0806bfe4 in b_event_passthrough (fd=16, event=2, data=0x80f51f0)
    at /tmp/buildd/bitlbee-3.0.5+20120320+devel+900/lib/events_libevent.c:147
        cond = <value optimized out>
        st = <value optimized out>
#3  0xb7eeaee4 in event_base_loop () from /usr/lib/libevent-1.4.so.2
No symbol table info available.
#4  0xb7eeb095 in event_base_dispatch () from /usr/lib/libevent-1.4.so.2
No symbol table info available.
#5  0x0806c335 in b_main_run () at /tmp/buildd/bitlbee-3.0.5+20120320+devel+900/lib/events_libevent.c:86
No locals.
#6  0x08069d05 in main (argc=2, argv=0xbffff834) at /tmp/buildd/bitlbee-3.0.5+20120320+devel+900/unix.c:183
        i = <value optimized out>
        old_cwd = 0x0
        sig = {__sigaction_handler = {sa_handler = 0x806a300 <sighandler>, sa_sigaction = 0x806a300 <sighandler>}, sa_mask = {
            __val = {0 <repeats 32 times>}}, sa_flags = -2147483648, sa_restorer = 0}
        old = {__sigaction_handler = {sa_handler = 0, sa_sigaction = 0}, sa_mask = {__val = {0, 0, 134550338, 3084571172,
              134530452, 1, 3087003636, 3221222768, 3087006384, 3221222724, 3086927090, 3221222708, 134530452, 3221222696,
              3087006292, 0, 3082902000, 1, 0, 1, 3087005944, 3084546036, 3221222612, 3221222632, 3221222648, 3221221552,
              1024, 1677721601, 0, 3221222768, 3221222696, 3221222708}}, sa_flags = 0, sa_restorer = 0xbf9981dc}

[Miklos Vajna]

Could you please test if the attached patch helps?

Thanks,

Miklos

[openback@…]

I'm not sure what version you're working with, because I had to apply the patch manually. I did it for the latest bzr version and still a crash:

Program received signal SIGSEGV, Segmentation fault.
0xb7fdc7c9 in skype_read_callback (data=0x8103428, fd=13, cond=B_EV_IO_READ) at protocols/skype/skype.c:1122
1122            if (!sd || sd->fd == -1)
(gdb) bt full
#0  0xb7fdc7c9 in skype_read_callback (data=0x8103428, fd=13, cond=B_EV_IO_READ) at protocols/skype/skype.c:1122
        ic = 0x8103428
        sd = 0x6f6f6265
        buf = "\200\362\021\b\364\337۷\240\363۷|\360\006\b\020\000\000\000,\247η\270\223\025\b\240\363۷\320\337\022\b\030\360\377\277\315\342\005\b\200\312\023\b\200\362\021\b\026vη\214\255η\000\315\037\b\\\260\f\b\320\337\022\b\b\000\000\000\005\000\000\000\250\257\f\bH\360\377\277z\341\005\b\000\241\022\b\200\312\023\b\200\362\021\b(B\374\267\030\242\024\b\000\000\000\000\026vη\252\376\363\267\240\363۷\364\337۷\240\363۷|\360\006\bh\360\377\277\275\254η\200\362\021\bu\246\a\b(B\374\267\000\225\025\b\026vηV\374\363\267\000\225\025\b\030\242\024\b1\000\000\000\200\362\021\b\240\363۷\364\337۷\240\363۷|\360\006\b\250\360\377\277\275\254η\026vη\000\211\025\b(B\374\267\070\061\023\b1\000\000\000V\374\363\267\240\363۷\364\337۷\240\363۷|\360\006\b\330\360\377\277\275\254η\370\360\377\277\224\200\a\b(B\374\267\240/\023\b)\000\000\000V\374\363\267\240\363۷\364\337۷\240\363۷|\360\006\b\b\361\377\277\275\254η(\361\377\277\224\200\a\b(B\374\267\250\222\025\b(\361\377\277V\374󷨒\025\b\000\000\000\000\001\000\000\000\000\000\000\000\270I\b\b\030\242\024\bX\361\377\277\224\200\a\b\250\222\025\bH\210\025\b\000Z\022\b\000Z\022"...
        st = 8
        i = -1073744920
        lines = 0x0
        lineptr = 0xbffff418
        line = 0xb7f3793a "\201\303\356\310\b"
        parsers = {{k = 0xb7fde527 "USERS ", v = 0xb7fd9e97 <skype_parse_users>}, {k = 0xb7fdeb27 "USER ",
            v = 0xb7fd9f10 <skype_parse_user>}, {k = 0xb7fdeb2d "CHATMESSAGE ", v = 0xb7fdae49 <skype_parse_chatmessage>}, {
            k = 0xb7fdeb3a "CALL ", v = 0xb7fdb3b5 <skype_parse_call>}, {k = 0xb7fdeb40 "FILETRANSFER ",
            v = 0xb7fdb8c1 <skype_parse_filetransfer>}, {k = 0xb7fdeb4e "CHAT ", v = 0xb7fdbf39 <skype_parse_chat>}, {
            k = 0xb7fdeb54 "GROUP ", v = 0xb7fdbbdb <skype_parse_group>}, {k = 0xb7fdeb5b "PASSWORD ",
            v = 0xb7fdc46b <skype_parse_password>}, {k = 0xb7fdeb65 "PROFILE PSTN_BALANCE ",
            v = 0xb7fdc4dc <skype_parse_profile>}, {k = 0xb7fdeb7b "PING", v = 0xb7fdc513 <skype_parse_ping>}, {
            k = 0xb7fdeb80 "CHATS ", v = 0xb7fdc540 <skype_parse_chats>}, {k = 0xb7fdeb87 "GROUPS ",
            v = 0xb7fdc5d7 <skype_parse_groups>}, {k = 0xb7fdeb8f "ALTER GROUP ", v = 0xb7fdc66e <skype_parse_alter_group>}}
#1  0x0806f0e3 in gaim_io_invoke (source=0x810a760, condition=G_IO_IN, data=0x80e7888) at events_glib.c:88
        closure = 0x80e7888
        gaim_cond = B_EV_IO_READ
        st = -1208204760
#2  0xb7f7b6db in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#3  0xb7f37305 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
No symbol table info available.
#4  0xb7f3afe8 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#5  0xb7f3b527 in g_main_loop_run () from /lib/libglib-2.0.so.0
No symbol table info available.
#6  0x0806f065 in b_main_run () at events_glib.c:64
No locals.
#7  0x0806cdcb in main (argc=4, argv=0xbffff7c4) at unix.c:183
        i = 0
        old_cwd = 0x0
        sig = {__sigaction_handler = {sa_handler = 0x806d1a3 <sighandler>, sa_sigaction = 0x806d1a3 <sighandler>}, sa_mask = {
            __val = {0 <repeats 32 times>}}, sa_flags = -2147483648, sa_restorer = 0}
        old = {__sigaction_handler = {sa_handler = 0, sa_sigaction = 0}, sa_mask = {__val = {0, 0, 134550577, 3084669476,
              134530540, 1, 3087003636, 3221222800, 3087006384, 3221222756, 3086927090, 3221222740, 134530540, 3221222728,
              3087006292, 0, 3082941504, 1, 0, 1, 3087005944, 3084640244, 3221222644, 3221222664, 3221222680, 3221221584,
              1024, 1677721601, 0, 3221222800, 3221222728, 3221222740}}, sa_flags = 0, sa_restorer = 0xbf8d0f4c}

[dx]

Closing all skype tickets (plugin removed in a949b43ed657154d4ff8492bbdb16202a1a9f22d)