- Textures are now immutable (apart from those created from raw
pixels), no more invalid textures
- Move all wl_drm stuff in wlr_renderer
- Most of wlr_texture fields are now private
- Remove some duplicated DMA-BUF code in the DRM backend
- Add more assertions
- Stride is now always given as bytes rather than pixels
- Drop wl_shm functions
Fun fact: this patch has been written 10,000 meters up in the air.
==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.
