In case a display is unplugged, the sway output may be removed from the
userdata before the gamma_control can be reset. In this case we can't
schedule a commit on the output, simply return within the function.
backtrace full:
#0 handle_gamma_control_set_gamma (listener=0x4856a8 <server+616>, data=0x7ffce1ed59c0) at ../sway/desktop/output.c:1105
server = 0x485440 <server>
event = 0x7ffce1ed59c0
output = 0x0
#1 0x00007f430d1dca0c in wl_signal_emit_mutable ()
from /nix/store/ky1g6ylzr2m4bq8fy0gzrnqmjr6948k5-wayland-1.22.0/lib/libwayland-server.so.0
No symbol table info available.
#2 0x00007f430d142370 in gamma_control_destroy (gamma_control=0x29eb9b0) at ../types/wlr_gamma_control_v1.c:37
manager = 0x27e33e0
output = 0x2a10770
event = {output = 0x2a10770, control = 0x0}
#3 0x00007f430d14239b in gamma_control_handle_output_destroy (listener=<optimized out>, data=<optimized out>)
at ../types/wlr_gamma_control_v1.c:59
gamma_control = <optimized out>
#4 0x00007f430d1dca0c in wl_signal_emit_mutable ()
from /nix/store/ky1g6ylzr2m4bq8fy0gzrnqmjr6948k5-wayland-1.22.0/lib/libwayland-server.so.0
No symbol table info available.
#5 0x00007f430d12a0e0 in wlr_output_destroy (output=output@entry=0x2a10770) at ../types/output/output.c:384
cursor = <optimized out>
tmp_cursor = <optimized out>
layer = <optimized out>
tmp_layer = <optimized out>
#6 0x00007f430d114ecf in disconnect_drm_connector (conn=conn@entry=0x2a10770) at ../backend/drm/drm.c:1757
__PRETTY_FUNCTION__ = "disconnect_drm_connector"
#7 0x00007f430d117078 in scan_drm_connectors (drm=drm@entry=0x1eebab0, event=event@entry=0x7ffce1ed5c1c) at ../backend/drm/drm.c:1597
c = <optimized out>
wlr_conn = 0x2a10770
drm_conn = 0x2e760d0
conn_id = <optimized out>
index = 4
i = 4
res = 0x2e761f0
seen_len = 5
seen = {true, true, true, true, true, false}
new_outputs_len = 0
new_outputs = 0x7ffce1ed5ab0
conn = <optimized out>
tmp_conn = <optimized out>
index = <optimized out>
#8 0x00007f430d113425 in handle_dev_change (listener=0x1eebbb0, data=0x7ffce1ed5c18) at ../backend/drm/backend.c:157
drm = 0x1eebab0
change = 0x7ffce1ed5c18
#9 0x00007f430d1dca0c in wl_signal_emit_mutable ()
from /nix/store/ky1g6ylzr2m4bq8fy0gzrnqmjr6948k5-wayland-1.22.0/lib/libwayland-server.so.0
No symbol table info available.
#10 0x00007f430d111696 in handle_udev_event (fd=<optimized out>, mask=<optimized out>, data=<optimized out>)
at ../backend/session/session.c:213
event = {type = WLR_DEVICE_HOTPLUG, {hotplug = {connector_id = 0, prop_id = 0}}}
devnum = <optimized out>
dev = 0x1ed9460
session = <optimized out>
udev_dev = 0x2e70db0
sysname = 0x2e73c60 "card0"
devnode = <optimized out>
action = 0x7f430d6677b5 "change"
seat = <optimized out>
__PRETTY_FUNCTION__ = "handle_udev_event"
#11 0x00007f430d1de8e2 in wl_event_loop_dispatch ()
from /nix/store/ky1g6ylzr2m4bq8fy0gzrnqmjr6948k5-wayland-1.22.0/lib/libwayland-server.so.0
No symbol table info available.
#12 0x00007f430d1dc445 in wl_display_run () from /nix/store/ky1g6ylzr2m4bq8fy0gzrnqmjr6948k5-wayland-1.22.0/lib/libwayland-server.so.0
No symbol table info available.
#13 0x000000000041daa5 in server_run (server=server@entry=0x485440 <server>) at ../sway/server.c:338
No locals.
#14 0x000000000041cf4d in main (argc=<optimized out>, argv=0x7ffce1ed5fe8) at ../sway/main.c:415
verbose = false
debug = false
validate = false
allow_unsupported_gpu = false
config_path = 0x0
c = <optimized out>
where event->output->data is NULL:
(gdb) p event->output->data
$5 = (void *) 0x0
Rouven Czerwinski
8b4b65d665