$ gdb firefox-esr
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Reading symbols from firefox-esr...(no debugging symbols found)...done.
(gdb) bt
No stack.
(gdb) run
Starting program: /usr/bin/firefox-esr 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/arm-linux-gnueabihf/libthread_db.so.1".
[New Thread 0xb146e450 (LWP 1835)]
[Thread 0xb146e450 (LWP 1835) exited]
[New Thread 0xb146e450 (LWP 1837)]
[New Thread 0xad5ff450 (LWP 1838)]
[New Thread 0xacdff450 (LWP 1839)]
[New Thread 0xac5ff450 (LWP 1840)]
[New Thread 0xabcff450 (LWP 1841)]
[New Thread 0xab4ff450 (LWP 1842)]
[New Thread 0xab2ff450 (LWP 1843)]
[New Thread 0xaabff450 (LWP 1844)]
[New Thread 0xaa9ff450 (LWP 1845)]
[New Thread 0xaa7ff450 (LWP 1846)]
[New Thread 0xa9fff450 (LWP 1847)]
[New Thread 0xa95ff450 (LWP 1850)]
[New Thread 0xad8c6450 (LWP 1852)]
[New Thread 0xa8dff450 (LWP 1853)]

Thread 1 "firefox-esr" received signal SIGSEGV, Segmentation fault.
0xb3b6d272 in ?? () from /usr/lib/firefox-esr/libxul.so
(gdb) bt
#0  0xb3b6d272 in ?? () from /usr/lib/firefox-esr/libxul.so
#1  0xb3b6d246 in ?? () from /usr/lib/firefox-esr/libxul.so
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb)