==12021==ERROR: AddressSanitizer: heap-use-after-free on address 0x617000015698 at pc 0x7f1a9abe1c09 bp 0x7ffe9068f6b0 sp 0x7ffe9068f6a0
WRITE of size 4 at 0x617000015698 thread T0
#0 0x7f1a9abe1c08 in pointer_handle_leave ../backend/wayland/wl_seat.c:40
#1 0x7f1a96ae7d1d in ffi_call_unix64 (/lib64/libffi.so.6+0x5d1d)
#2 0x7f1a96ae768e in ffi_call (/lib64/libffi.so.6+0x568e)
#3 0x7f1a988e0d8a (/lib64/libwayland-client.so.0+0x8d8a)
#4 0x7f1a988dd927 (/lib64/libwayland-client.so.0+0x5927)
#5 0x7f1a988debe3 in wl_display_dispatch_queue_pending (/lib64/libwayland-client.so.0+0x6be3)
#6 0x7f1a9abdd6d6 in dispatch_events ../backend/wayland/backend.c:28
#7 0x7f1a9a968c11 in wl_event_loop_dispatch (/lib64/libwayland-server.so.0+0x9c11)
#8 0x7f1a9a967449 in wl_display_run (/lib64/libwayland-server.so.0+0x8449)
#9 0x418dff in main ../rootston/main.c:81
#10 0x7f1a99b5ef29 in __libc_start_main (/lib64/libc.so.6+0x20f29)
#11 0x4057c9 in _start (/home/shared/wayland/wlroots/build/rootston/rootston+0x4057c9)
0x617000015698 is located 664 bytes inside of 696-byte region [0x617000015400,0x6170000156b8)
freed by thread T0 here:
#0 0x7f1a9af754b8 in __interceptor_free (/lib64/libasan.so.4+0xde4b8)
#1 0x7f1a9abe01ee in wlr_wl_output_destroy ../backend/wayland/output.c:194
#2 0x7f1a9ac12918 in wlr_output_destroy ../types/wlr_output.c:299
#3 0x7f1a9abe061b in xdg_toplevel_handle_close ../backend/wayland/output.c:255
#4 0x7f1a96ae7d1d in ffi_call_unix64 (/lib64/libffi.so.6+0x5d1d)
#5 0x7f1a96ae768e in ffi_call (/lib64/libffi.so.6+0x568e)
#6 0x7f1a988e0d8a (/lib64/libwayland-client.so.0+0x8d8a)
#7 0x7f1a988dd927 (/lib64/libwayland-client.so.0+0x5927)
#8 0x7f1a988debe3 in wl_display_dispatch_queue_pending (/lib64/libwayland-client.so.0+0x6be3)
#9 0x7f1a9abdd6d6 in dispatch_events ../backend/wayland/backend.c:28
#10 0x7f1a9a968c11 in wl_event_loop_dispatch (/lib64/libwayland-server.so.0+0x9c11)
#11 0x7f1a9a967449 in wl_display_run (/lib64/libwayland-server.so.0+0x8449)
#12 0x418dff in main ../rootston/main.c:81
#13 0x7f1a99b5ef29 in __libc_start_main (/lib64/libc.so.6+0x20f29)
#14 0x4057c9 in _start (/home/shared/wayland/wlroots/build/rootston/rootston+0x4057c9)
previously allocated by thread T0 here:
#0 0x7f1a9af75a38 in __interceptor_calloc (/lib64/libasan.so.4+0xdea38)
#1 0x7f1a9abe0703 in wlr_wl_output_create ../backend/wayland/output.c:272
#2 0x7f1a9abdd8eb in wlr_wl_backend_start ../backend/wayland/backend.c:55
#3 0x7f1a9abbeb49 in wlr_backend_start ../backend/backend.c:28
#4 0x7f1a9abd8ce1 in multi_backend_start ../backend/multi/backend.c:24
#5 0x7f1a9abbeb49 in wlr_backend_start ../backend/backend.c:28
#6 0x418c32 in main ../rootston/main.c:58
#7 0x7f1a99b5ef29 in __libc_start_main (/lib64/libc.so.6+0x20f29)
#8 0x4057c9 in _start (/home/shared/wayland/wlroots/build/rootston/rootston+0x4057c9)
The backend destroy signal is emitted before the output_remove
signal is. When the destroy signal is emitted listeners remove
their output_remove listener, so the output_remove signal is never
received and listeners have an invalid output pointer.
The correct way to solve this would be to remove the output_remove
signal completely and use the wlr_output.events.destroy signal
instead. This isn't yet possible because wl_signal_emit is unsafe
and listeners cannot be removed in listeners.
This backports some changes to #319 to fix the screenshooter data
format. This also adds wlr_backend_get_renderer which will be
useful to support multiple renderers.
Add a remote display name argument to wlr_wl_backend_create.
If NULL is passed to the wayland backend at all times, creating a
wayland backend *after* the compositor was started up, would require
changing the WAYLAND_DISPLAY environment variable.
* Moved os-compatibility.c to util
* Added header under util
* Removed static since it isn't needed (i think so)
* Adjusted meson.build to include lib_wlr
Improved some codestyle
* Added guard to os-compatibility.h
* Fixed typo in include statment
Adjusted Guard
* Changed guard to _WLR_UTIL_OS_COMPATIBILITY
- xdg toplevel configure can be called with 0 width/height,
in that case we are free to do as we like (so do nothing)
- need a display roundtrip after everything is setup but before
we start attaching buffers to the surface
Note that this does not go on to the next backend, because
attempt_wl_backend does not check if we have any output created.
We cannot test simply because (right now) a run of our examples will go
in this function twice, the first of which will (rightly?) return no
display but needs to return backend creation success.
Wayland fd is always writable and will busy-loop.
The dispatch function gets called with 0-mask when we need to flush
display anyway, so this saves CPU at no visible impact.
