<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - SIGSEGV in xkb_context_ref from /usr/lib/libxkbcommon.so.0" href="https://bugs.freedesktop.org/show_bug.cgi?id=94075#c7">Comment # 7</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - SIGSEGV in xkb_context_ref from /usr/lib/libxkbcommon.so.0" href="https://bugs.freedesktop.org/show_bug.cgi?id=94075">bug 94075</a> from <a class="email" href="mailto:robert.folland@me.com" title="Robert Folland <robert.folland@me.com>"> Robert Folland</a> <pre>And here is output from valgrind. I could not get it to crash with valgrind with a debug version of libxkbcommon. Only with sdl2 and wayland debug versions. Init 41 ==446== Invalid read of size 4 ==446== at 0x6FE9CD3: xkb_context_ref (in /usr/lib/libxkbcommon.so.0.0.0) ==446== by 0x6FEBEB8: ??? (in /usr/lib/libxkbcommon.so.0.0.0) ==446== by 0x6FEB7FB: xkb_keymap_new_from_buffer (in /usr/lib/libxkbcommon.so.0.0.0) ==446== by 0x4EF7A4D: keyboard_handle_keymap (SDL_waylandevents.c:269) ==446== by 0x69C21EF: ffi_call_unix64 (in /usr/lib/libffi.so.6.0.4) ==446== by 0x69C1C57: ffi_call (in /usr/lib/libffi.so.6.0.4) ==446== by 0x67B5E3D: wl_closure_invoke (connection.c:949) ==446== by 0x67B2BDF: dispatch_event.isra.4 (wayland-client.c:1274) ==446== by 0x67B3DB3: dispatch_queue (wayland-client.c:1420) ==446== by 0x67B3DB3: wl_display_dispatch_queue_pending (wayland-client.c:1662) ==446== by 0x67B40CE: wl_display_roundtrip_queue (wayland-client.c:1085) ==446== by 0x4EF8A9F: Wayland_VideoInit (SDL_waylandvideo.c:302) ==446== by 0x4EE3ED5: SDL_VideoInit_REAL (SDL_video.c:513) ==446== Address 0x0 is not stack'd, malloc'd or (recently) free'd ==446== ==446== ==446== Process terminating with default action of signal 11 (SIGSEGV): dumping core ==446== Access not within mapped region at address 0x0 ==446== at 0x6FE9CD3: xkb_context_ref (in /usr/lib/libxkbcommon.so.0.0.0) ==446== by 0x6FEBEB8: ??? (in /usr/lib/libxkbcommon.so.0.0.0) ==446== by 0x6FEB7FB: xkb_keymap_new_from_buffer (in /usr/lib/libxkbcommon.so.0.0.0) ==446== by 0x4EF7A4D: keyboard_handle_keymap (SDL_waylandevents.c:269) ==446== by 0x69C21EF: ffi_call_unix64 (in /usr/lib/libffi.so.6.0.4) ==446== by 0x69C1C57: ffi_call (in /usr/lib/libffi.so.6.0.4) ==446== by 0x67B5E3D: wl_closure_invoke (connection.c:949) ==446== by 0x67B2BDF: dispatch_event.isra.4 (wayland-client.c:1274) ==446== by 0x67B3DB3: dispatch_queue (wayland-client.c:1420) ==446== by 0x67B3DB3: wl_display_dispatch_queue_pending (wayland-client.c:1662) ==446== by 0x67B40CE: wl_display_roundtrip_queue (wayland-client.c:1085) ==446== by 0x4EF8A9F: Wayland_VideoInit (SDL_waylandvideo.c:302) ==446== by 0x4EE3ED5: SDL_VideoInit_REAL (SDL_video.c:513) ==446== If you believe this happened as a result of a stack ==446== overflow in your program's main thread (unlikely but ==446== possible), you can try to increase the size of the ==446== main thread stack using the --main-stacksize= flag. ==446== The main thread stack size used in this run was 8388608. ==446== ==446== HEAP SUMMARY: ==446== in use at exit: 104,282 bytes in 103 blocks ==446== total heap usage: 66,126 allocs, 66,023 frees, 8,770,031 bytes allocated ==446== ==446== 1,424 bytes in 1 blocks are definitely lost in loss record 38 of 42 ==446== at 0x4C2C947: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so) ==446== by 0x6FEBE9D: ??? (in /usr/lib/libxkbcommon.so.0.0.0) ==446== by 0x6FEB7FB: xkb_keymap_new_from_buffer (in /usr/lib/libxkbcommon.so.0.0.0) ==446== by 0x4EF7A4D: keyboard_handle_keymap (SDL_waylandevents.c:269) ==446== by 0x69C21EF: ffi_call_unix64 (in /usr/lib/libffi.so.6.0.4) ==446== by 0x69C1C57: ffi_call (in /usr/lib/libffi.so.6.0.4) ==446== by 0x67B5E3D: wl_closure_invoke (connection.c:949) ==446== by 0x67B2BDF: dispatch_event.isra.4 (wayland-client.c:1274) ==446== by 0x67B3DB3: dispatch_queue (wayland-client.c:1420) ==446== by 0x67B3DB3: wl_display_dispatch_queue_pending (wayland-client.c:1662) ==446== by 0x67B40CE: wl_display_roundtrip_queue (wayland-client.c:1085) ==446== by 0x4EF8A9F: Wayland_VideoInit (SDL_waylandvideo.c:302) ==446== by 0x4EE3ED5: SDL_VideoInit_REAL (SDL_video.c:513) ==446== ==446== LEAK SUMMARY: ==446== definitely lost: 1,424 bytes in 1 blocks ==446== indirectly lost: 0 bytes in 0 blocks ==446== possibly lost: 0 bytes in 0 blocks ==446== still reachable: 102,858 bytes in 102 blocks ==446== suppressed: 0 bytes in 0 blocks ==446== Reachable blocks (those to which a pointer was found) are not shown. ==446== To see them, rerun with: --leak-check=full --show-leak-kinds=all ==446== ==446== For counts of detected and suppressed errors, rerun with: -v ==446== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 0 from 0) Segmentation fault (core dumped)</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>