$ gdb /usr/lib/icecat/icecat GNU gdb (GDB) 8.1 Copyright (C) 2018 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-pc-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/lib/icecat/icecat...(no debugging symbols found)...done. (gdb) run Starting program: /usr/lib/icecat/icecat [Thread debugging using libthread_db enabled] Using host libthread_db library "/usr/lib/libthread_db.so.1". [New Thread 0x7fffe32ff700 (LWP 4439)] [Thread 0x7fffe32ff700 (LWP 4439) exited] [New Thread 0x7fffe32ff700 (LWP 4442)] [New Thread 0x7fffe1618700 (LWP 4443)] [New Thread 0x7fffe059a700 (LWP 4444)] [New Thread 0x7fffde7a2700 (LWP 4445)] [New Thread 0x7fffddfa1700 (LWP 4446)] [New Thread 0x7fffdd7a0700 (LWP 4447)] [New Thread 0x7fffdcdff700 (LWP 4448)] [New Thread 0x7fffdc5fe700 (LWP 4449)] [New Thread 0x7fffdbdfd700 (LWP 4450)] [New Thread 0x7fffdb5fc700 (LWP 4451)] [New Thread 0x7fffdadfb700 (LWP 4452)] [New Thread 0x7fffda5fa700 (LWP 4453)] [New Thread 0x7fffd9df9700 (LWP 4454)] [New Thread 0x7fffd8fff700 (LWP 4455)] [New Thread 0x7ffff6cad700 (LWP 4456)] [New Thread 0x7fffd5aff700 (LWP 4457)] [New Thread 0x7fffd52fe700 (LWP 4458)] [New Thread 0x7fffd47ff700 (LWP 4459)] [New Thread 0x7fffd3ffe700 (LWP 4460)] [New Thread 0x7fffd2cff700 (LWP 4461)] [New Thread 0x7fffd20ff700 (LWP 4462)] [New Thread 0x7fffd18fe700 (LWP 4463)] [New Thread 0x7fffd0eff700 (LWP 4464)] [New Thread 0x7fffd06fe700 (LWP 4465)] [New Thread 0x7fffcfefd700 (LWP 4466)] [New Thread 0x7fffceeff700 (LWP 4467)] [New Thread 0x7fffce6fe700 (LWP 4468)] [New Thread 0x7fffcdefd700 (LWP 4469)] [New Thread 0x7fffcd6fc700 (LWP 4470)] [New Thread 0x7fffcbff5700 (LWP 4471)] [New Thread 0x7fffcb7f4700 (LWP 4472)] [New Thread 0x7fffcaff3700 (LWP 4473)] [New Thread 0x7fffca7f2700 (LWP 4474)] [New Thread 0x7fffc9ff1700 (LWP 4475)] [Thread 0x7fffc9ff1700 (LWP 4475) exited] [New Thread 0x7fffc9ff1700 (LWP 4476)] [Thread 0x7fffd3ffe700 (LWP 4460) exited] [New Thread 0x7fffc87ff700 (LWP 4477)] [New Thread 0x7fffc7ffe700 (LWP 4478)] [New Thread 0x7fffc75ff700 (LWP 4479)] [New Thread 0x7fffc6dfe700 (LWP 4480)] [New Thread 0x7fffc65fd700 (LWP 4481)] [Thread 0x7fffc9ff1700 (LWP 4476) exited] 1530642362267 addons.webextension.DMCAreg@0xbeef.coffee WARN Loading extension 'DMCAreg@0xbeef.coffee': Reading manifest: Error processing id: An unexpected property was found in the WebExtension manifest. 1530642362276 addons.webextension.LCSP@0xbeef.coffee WARN Loading extension 'LCSP@0xbeef.coffee': Reading manifest: Error processing id: An unexpected property was found in the WebExtension manifest. 1530642362288 addons.webextension.goteo@0xbeef.coffee WARN Loading extension 'goteo@0xbeef.coffee': Reading manifest: Error processing id: An unexpected property was found in the WebExtension manifest. 1530642362290 addons.webextension.rsf@0xbeef.coffee WARN Loading extension 'rsf@0xbeef.coffee': Reading manifest: Error processing id: An unexpected property was found in the WebExtension manifest. [Thread 0x7fffc75ff700 (LWP 4479) exited] [Thread 0x7fffc65fd700 (LWP 4481) exited] [Thread 0x7fffc6dfe700 (LWP 4480) exited] [New Thread 0x7fffc6dfe700 (LWP 4482)] [New Thread 0x7fffdcf73700 (LWP 4483)] [New Thread 0x7fffc65fd700 (LWP 4484)] [New Thread 0x7fffc75ff700 (LWP 4485)] [New Thread 0x7fffc9ff1700 (LWP 4486)] [Thread 0x7fffc65fd700 (LWP 4484) exited] [Thread 0x7fffcd6fc700 (LWP 4470) exited] [Thread 0x7fffcdefd700 (LWP 4469) exited] [Thread 0x7fffce6fe700 (LWP 4468) exited] [New Thread 0x7fffcd6fc700 (LWP 4487)] [Thread 0x7fffc9ff1700 (LWP 4486) exited] [Thread 0x7fffc75ff700 (LWP 4485) exited] [Thread 0x7fffcd6fc700 (LWP 4487) exited] [New Thread 0x7fffc9ff1700 (LWP 4488)] [Thread 0x7fffc9ff1700 (LWP 4488) exited] [New Thread 0x7fffc9ff1700 (LWP 4489)] [Thread 0x7fffc9ff1700 (LWP 4489) exited] [New Thread 0x7fffc9ff1700 (LWP 4490)] [Thread 0x7fffc9ff1700 (LWP 4490) exited] [New Thread 0x7fffc9ff1700 (LWP 4491)] [Thread 0x7fffc9ff1700 (LWP 4491) exited] [New Thread 0x7fffc9ff1700 (LWP 4492)] [New Thread 0x7fffcd6fc700 (LWP 4493)] [Thread 0x7fffc9ff1700 (LWP 4492) exited] [New Thread 0x7fffc9ff1700 (LWP 4494)] [New Thread 0x7fffc75ff700 (LWP 4496)] [Thread 0x7fffc9ff1700 (LWP 4494) exited] [New Thread 0x7fffc65fd700 (LWP 4497)] [New Thread 0x7fffc9ff1700 (LWP 4512)] [New Thread 0x7fffbefff700 (LWP 4513)] [New Thread 0x7fffbe7fe700 (LWP 4514)] [New Thread 0x7fffbdcff700 (LWP 4515)] [New Thread 0x7fffbd4fe700 (LWP 4516)] [New Thread 0x7fffbccfd700 (LWP 4517)] [New Thread 0x7fffbc4fc700 (LWP 4518)] [Thread 0x7fffd47ff700 (LWP 4459) exited] [Thread 0x7fffbccfd700 (LWP 4517) exited] [New Thread 0x7fffbbaff700 (LWP 4519)] [New Thread 0x7fffbccfd700 (LWP 4520)] [Thread 0x7fffc65fd700 (LWP 4497) exited] [New Thread 0x7fffc65fd700 (LWP 4529)] Thread 1 "icecat" received signal SIGSEGV, Segmentation fault. 0x00007fffe9815958 in ?? () from /usr/lib/icecat/libxul.so (gdb) bt #0 0x00007fffe9815958 in () at /usr/lib/icecat/libxul.so #1 0x00007fffe9819b71 in () at /usr/lib/icecat/libxul.so #2 0x00007fffe96e848f in () at /usr/lib/icecat/libxul.so #3 0x00007fffe96e9e8a in () at /usr/lib/icecat/libxul.so #4 0x00007fffe98f2e37 in () at /usr/lib/icecat/libxul.so #5 0x00007fffe9a71526 in () at /usr/lib/icecat/libxul.so #6 0x00007fffe980ec29 in () at /usr/lib/icecat/libxul.so #7 0x00007fffe98170f3 in () at /usr/lib/icecat/libxul.so #8 0x00007fffe9818d5e in () at /usr/lib/icecat/libxul.so #9 0x00007fffe95103a2 in () at /usr/lib/icecat/libxul.so #10 0x00007fffe953713a in () at /usr/lib/icecat/libxul.so #11 0x00007fffe9808272 in () at /usr/lib/icecat/libxul.so #12 0x00007fffe97e7700 in () at /usr/lib/icecat/libxul.so #13 0x00007fffeb153678 in () at /usr/lib/icecat/libxul.so #14 0x00007fffeba55d3e in () at /usr/lib/icecat/libxul.so #15 0x00007fffebacc168 in () at /usr/lib/icecat/libxul.so #16 0x00007fffebaccbd3 in () at /usr/lib/icecat/libxul.so #17 0x00007fffebaccec5 in XRE_main () at /usr/lib/icecat/libxul.so #18 0x0000555555559627 in () #19 0x00005555555588fe in () #20 0x00007ffff707c06b in __libc_start_main () at /usr/lib/libc.so.6 #21 0x0000555555558b6a in _start () (gdb)