[Bug 2304189] Review Request: mozilla-openh264 - H.264 codec support for Firefox

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https://bugzilla.redhat.com/show_bug.cgi?id=2304189



--- Comment #20 from Michael Catanzaro <mcatanza@xxxxxxxxxx> ---
The crash is here:

  PRLibrary* lib = PR_LoadLibraryWithFlags(libSpec, 0);
  if (!lib) {
    MOZ_CRASH_UNSAFE_PRINTF("Cannot load plugin as library %d %d",
                            PR_GetError(), PR_GetOSError());

Before it crashes, I see the following:

[102939] Sandbox: attempt to open unexpected file
/usr/lib64/firefox/libopenh264.so.7
[102939] Sandbox: attempt to open unexpected file /lib64/libopenh264.so.7
[102939] Sandbox: attempt to open unexpected file
/lib64/glibc-hwcaps/x86-64-v4/libopenh264.so.7
[102939] Sandbox: seccomp sandbox violation: pid 102939, tid 102939, syscall
262, args 4294967196 140732297854400 140732297854592 0 140732297854935 0.
[102939] Sandbox: attempt to open unexpected file
/lib64/glibc-hwcaps/x86-64-v3/libopenh264.so.7
[102939] Sandbox: seccomp sandbox violation: pid 102939, tid 102939, syscall
262, args 4294967196 140732297854400 140732297854592 0 140732297854935 0.
[102939] Sandbox: attempt to open unexpected file
/lib64/glibc-hwcaps/x86-64-v2/libopenh264.so.7
[102939] Sandbox: seccomp sandbox violation: pid 102939, tid 102939, syscall
262, args 4294967196 140732297854400 140732297854592 0 140732297854935 0.
[102939] Sandbox: attempt to open unexpected file /lib64/libopenh264.so.7
[102939] Sandbox: seccomp sandbox violation: pid 102939, tid 102939, syscall
262, args 4294967196 140732297854400 140732297854592 0 140732297854935 0.
[102939] Sandbox: attempt to open unexpected file
/usr/lib64/glibc-hwcaps/x86-64-v4/libopenh264.so.7
[102939] Sandbox: seccomp sandbox violation: pid 102939, tid 102939, syscall
262, args 4294967196 140732297854400 140732297854592 0 140732297854935 0.
[102939] Sandbox: attempt to open unexpected file
/usr/lib64/glibc-hwcaps/x86-64-v3/libopenh264.so.7
[102939] Sandbox: seccomp sandbox violation: pid 102939, tid 102939, syscall
262, args 4294967196 140732297854400 140732297854592 0 140732297854935 0.
[102939] Sandbox: attempt to open unexpected file
/usr/lib64/glibc-hwcaps/x86-64-v2/libopenh264.so.7
[102939] Sandbox: seccomp sandbox violation: pid 102939, tid 102939, syscall
262, args 4294967196 140732297854400 140732297854592 0 140732297854935 0.
[102939] Sandbox: attempt to open unexpected file /usr/lib64/libopenh264.so.7
[102939] Sandbox: seccomp sandbox violation: pid 102939, tid 102939, syscall
262, args 4294967196 140732297854400 140732297854592 0 140732297854935 0.
[Child 102856, MediaDecoderStateMachine #1] WARNING: Decoder=7f4203e62000
Decode error: NS_ERROR_DOM_MEDIA_FATAL_ERR (0x806e0005): file
/builddir/build/BUILD/firefox-128.0.3/dom/media/MediaDecoderStateMachineBase.cpp:167
[Parent 102652, IPC I/O Parent] WARNING: process 102939 exited on signal 11:
file
/builddir/build/BUILD/firefox-128.0.3/ipc/chromium/src/base/process_util_posix.cc:335

None of these sandbox violations occur when using the existing mozilla-openh264
package. When using the existing mozilla-openh264, the video plays fine and I
see a different set of sandbox violations instead:

[103496] Sandbox: attempt to open unexpected file
/sys/devices/system/cpu/cpu0/cache/index2/size
[103496] Sandbox: attempt to open unexpected file
/sys/devices/system/cpu/cpu0/cache/index3/size
[103496] Sandbox: attempt to open unexpected file
/sys/devices/system/cpu/present
[103496] Sandbox: attempt to open unexpected file
/sys/devices/system/cpu/possible
[103496] Sandbox: attempt to open unexpected file
/sys/devices/system/cpu/possible
[103496] Sandbox: attempt to open unexpected file
/sys/devices/system/cpu/cpu0/topology/core_cpus
[103496] Sandbox: attempt to open unexpected file
/sys/devices/system/cpu/cpu0/topology/thread_siblings

I don't know what the difference is yet.


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