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This fix use after free when a pluggable gpu screen (such as displaylink)
was set as primary screen and unpluged.
gdb backtrace:
#0 OssigHandler (signo=11, sip=0x7fff2e0a50f0, unused=0x7fff2e0a4fc0) at ../../../../os/osinit.c:138
#1 <signal handler called>
#2 rrGetscreenResources (client=0x3195160, query=0) at ../../../../randr/rrscreen.c:577
#3 0x0000000000562bae in ProcRRGetscreenResourcesCurrent (client=0x3195160) at ../../../../randr/rrscreen.c:652
#4 OxOOOOB0000054de63 in ProcRRDispatch (client=0x3195160) at ../../../../randr/randr.c:717
#5 0x00000000004322c6 in Dispatch () at ../../../../dix/dispatch.c:485
#6 0x0900900990443139 in dix_main (argc=12, argv=0x7fff2e0a5f78, envp=0x7fff2e0a5fe0) at ../../../../dix/main.c:276
#7 0X0000000000421d9a in main (argc=12, argv=0x7fff2e0a5f78, envp=0x7fff2e0a5fe0) at ../../../../dix/stubmain.c:34
Signed-off-by: hongao <hongao@uniontech.com>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1553>
(cherry picked from commit
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|---|---|---|
| .. | ||
| meson.build | ||
| randr.c | ||
| randrstr.h | ||
| randrstr_priv.h | ||
| rrcrtc.c | ||
| rrdispatch.c | ||
| rrinfo.c | ||
| rrlease.c | ||
| rrmode.c | ||
| rrmonitor.c | ||
| rroutput.c | ||
| rrpointer.c | ||
| rrproperty.c | ||
| rrprovider.c | ||
| rrproviderproperty.c | ||
| rrscreen.c | ||
| rrsdispatch.c | ||
| rrtransform.c | ||
| rrtransform.h | ||
| rrxinerama.c | ||