Bug 2157980

Created attachment 1935546 [details]
coredump (zstd compressed)

While diagnosing a crash in dleyna-renderer

    $ abrt-cli report .......
    <...>
    ('report_uReport' completed successfully)
    Generating backtrace
    Backtrace is generated and saved, 36514 bytes
    Backtrace parsing failed for .
   15:0: Function call in the frame header misses mandatory "at file.c:xy" section
    Looking for similar problems in bugzilla
    Reporting is disabled because the generated backtrace has low informational value.

Generated backtrace shows NULL pointer was used

    $ cat backtrace
    : No such file or directory.
    [New LWP 138679]
    [New LWP 138685]
    [New LWP 138681]
    [New LWP 138708]
    [New LWP 138684]
    [Thread debugging using libthread_db enabled]
    Using host libthread_db library "/lib64/libthread_db.so.1".
    Core was generated by `/usr/libexec/dleyna-renderer-service'.
    Program terminated with signal SIGSEGV, Segmentation fault.
    #0  0x0000000000000000 in ?? ()
    [Current thread is 1 (Thread 0x7f35748e4840 (LWP 138679))]

    Thread 1 (Thread 0x7f35748e4840 (LWP 138679)):
    #0  0x0000000000000000 in  ()
    #1  0x00007f35757e5a8a in g_hash_table_lookup_node (hash_return=<synthetic pointer>, key=0x5623f12aa000, hash_table=0x5623f12cd810<error reading variable: Cannot access memory at address 0x4>) at ../glib/ghash.c:474
            node_hash = <optimized out>
            hash_value = <optimized out>
            have_tombstone = 0
            step = 0
            node_index = <optimized out>
            first_tombstone = 0
            node_hash = <optimized out>
            __func__ = "g_hash_table_lookup"
    #2  g_hash_table_lookup (hash_table=0x5623f12cd810<error reading variable: Cannot access memory at address 0x4>, key=key@entry=0x5623f12aa000) at ../glib/ghash.c:1540
            node_hash = <optimized out>
            __func__ = "g_hash_table_lookup"
    #3  0x00007f35758fbb3f in prv_server_available_cb (cp=<optimized out>, proxy=proxy@entry=0x5623f129ba20 [GUPnPDeviceProxy], user_data=0x5623f12a8c60) at ../libdleyna/renderer/upnp.c:174
            upnp = 0x5623f12a8c60
            udn = 0x5623f12aa000 "uuid:6b58de40-d510-373e-12a6-7da4a8e9514b"
            device = <optimized out>
            ip_address = 0x5623f12ca540 "192.168.0.151"
            context = <optimized out>
            queue_id = <optimized out>
            i = <optimized out>
            priv_t = 0x7f35640197e0
    <...>

Through the debugger it's obvious it's the result of a call through a NULL function pointer

    $ coredumpctl debug ......
    <...>
    [Thread debugging using libthread_db enabled]
    Using host libthread_db library "/lib64/libthread_db.so.1".
    Core was generated by `/usr/libexec/dleyna-renderer-service'.
    Program terminated with signal SIGSEGV, Segmentation fault.
    #0  0x0000000000000000 in ?? ()
    [Current thread is 1 (Thread 0x7f35748e4840 (LWP 138679))]
    (gdb) bt
    #0  0x0000000000000000 in  ()
    #1  0x00007f35757e5a8a in g_hash_table_lookup_node (hash_return=<synthetic pointer>, key=0x5623f12aa000, hash_table=0x5623f12cd810<error reading variable: Cannot access memory at address 0x4>) at ../glib/ghash.c:474
    #2  g_hash_table_lookup (hash_table=0x5623f12cd810<error reading variable: Cannot access memory at address 0x4>, key=key@entry=0x5623f12aa000) at ../glib/ghash.c:1540
    <...>
    (gdb) frame 1
    #1  0x00007f35757e5a8a in g_hash_table_lookup_node (hash_return=<synthetic pointer>, key=0x5623f12aa000, hash_table=0x5623f12cd810<error reading variable: Cannot access memory at address 0x4>) at ../glib/ghash.c:474
    474	  hash_value = hash_table->hash_func (key);


I think the backtrace has information value and should be reported by abrt.