Re: [tcpdump] coredump when launched in a ESX4 VM without interface parameter (#59)

[Michael Richardson <mcr () sandelman ca>]

> > > > > "JoKoT3" == JoKoT3  <notifications () github com> writes:
    JoKoT3> tcpdump version 4.3.0 libpcap version 1.3.0 Systems : both
    JoKoT3> systems are arch x64 up-to-date, one is an ESX 4 VM, the
    JoKoT3> other is a dell laptop

    JoKoT3> Error : tcpdump core dumps when lauched without -i parameter
    JoKoT3> in a VM running on ESX 4. The same command does not produce
    JoKoT3> a core dump when launched on my laptop Both are ok when
    JoKoT3> specifying an interface.

    JoKoT3> strace when core dump : http://pastebin.com/Md6btdcn gdb
    JoKoT3> backtrace of the coredump : http://pastebin.com/zB2JFgsC

Thanks.
The fault seems to be inside of libusb:

 Using host libthread_db library "/usr/lib/libthread_db.so.1".
 Core was generated by `/usr/sbin/tcpdump icmp'.
 Program terminated with signal 11, Segmentation fault.
 #0  0x00007feae033fb50 in __opendirat () from /usr/lib/libc.so.6
 (gdb) bt
 #0  0x00007feae033fb50 in __opendirat () from /usr/lib/libc.so.6
 #1  0x00007feadfc68e9e in ?? () from /usr/lib/libusb-1.0.so.0
 #2  0x00007feadfc6153c in libusb_get_device_list () from
 /usr/lib/libusb-1.0.so.0
 #3  0x00007feae0647a9f in canusb_platform_finddevs () from
 /usr/lib/libpcap.so.1

It appears that it faults if there are no USB devices, which wouldn't be
surprising for a VM.

 openat(AT_FDCWD, "/dev/bus/usb",
 O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = -1 ENOENT (No such file or
 directory)
 openat(AT_FDCWD, "/proc/bus/usb",
 O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = -1 ENOENT (No such file or
 directory)
 openat(AT_FDCWD, "/dev", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 3

I did not see a related bug report at http://www.libusb.org/report/1 or
at: http://www.libusb.org/report/9

What distro are you running?  Can you tell what minor version of
libusb-1.0 you have (there appears to be up to 1.0.9)

I'm waiting for my regisration so that I can file a bug.


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