GNU gdb (GDB) 8.2 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-alpine-linux-musl". 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 Xwayland...Reading symbols from /usr/lib/debug//usr/bin/Xwayland.debug...done. done. [New LWP 2425] [New LWP 2424] Core was generated by `Xwayland :0 -rootless -terminate -listen 13 -listen 14 -wm 64'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f7055fd975a in deflate_and_write_to_disk (in_data=0x5624edbafb10, in_data_size=26165, dest=dest@entry=9, filename=) at disk_cache.c:732 [Current thread is 1 (LWP 2425)] (gdb) bt #0 0x00007f7055fd975a in deflate_and_write_to_disk (in_data=0x5624edbafb10, in_data_size=26165, dest=dest@entry=9, filename=) at disk_cache.c:732 #1 0x00007f7055fd9bb6 in cache_put (job=job@entry=0x5624edbafac0, thread_index=thread_index@entry=0) at disk_cache.c:976 #2 0x00007f7055fe075b in util_queue_thread_func (input=input@entry=0x5624ed5ee540) at u_queue.c:272 #3 0x00007f7055fe024c in impl_thrd_routine (p=) at ../../include/c11/threads_posix.h:87 #4 0x00007f7059b6495b in start (p=) at src/thread/pthread_create.c:147 #5 0x00007f7059b66844 in __clone () at src/thread/x86_64/clone.s:21 Backtrace stopped: frame did not save the PC (gdb) quit