Comment # 1
on bug 12440
from Guy Harris
Somewhat-close-to-tip-of-2.0-branch on OS X:
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000
...
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libwireshark.6.dylib 0x000000010cccf0ee dissect_eth + 238
(packet-eth.c:841)
1 libwireshark.6.dylib 0x000000010ca051b2 call_dissector_work +
258 (packet.c:618)
2 libwireshark.6.dylib 0x000000010ca052d3 dissector_try_uint +
99 (packet.c:1164)
3 libwireshark.6.dylib 0x000000010ca051e6 call_dissector_work +
310 (packet.c:621)
4 libwireshark.6.dylib 0x000000010ca04762
call_dissector_with_data + 50 (packet.c:2564)
5 libwireshark.6.dylib 0x000000010d1e75ba dissect_user + 458
(packet-user_encap.c:173)
6 libwireshark.6.dylib 0x000000010ca051e6 call_dissector_work +
310 (packet.c:621)
7 libwireshark.6.dylib 0x000000010ca05075 dissector_try_uint_new
+ 101 (packet.c:1164)
8 libwireshark.6.dylib 0x000000010ccfd943 dissect_frame + 3459
(packet-frame.c:499)
9 libwireshark.6.dylib 0x000000010ca051b2 call_dissector_work +
258 (packet.c:618)
10 libwireshark.6.dylib 0x000000010ca04762
call_dissector_with_data + 50 (packet.c:2564)
11 libwireshark.6.dylib 0x000000010ca04648 dissect_record + 568
(packet.c:500)
12 libwireshark.6.dylib 0x000000010c9f82d4
epan_dissect_run_with_taps + 68 (epan.c:346)
13 tshark 0x000000010c8b1a48 process_packet + 376
(tshark.c:3744)
14 tshark 0x000000010c8af35c main + 11532
(tshark.c:3497)
15 libdyld.dylib 0x00007fff93c575ad start + 1
That's
dissect_eth_common(tvb, pinfo, tree, eth_assume_fcs ? 4 :
eth->fcs_len);
and eth is probably null.
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