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-rw-r--r--user/firefox-esr/seccomp-membarrier.patch12
1 files changed, 12 insertions, 0 deletions
diff --git a/user/firefox-esr/seccomp-membarrier.patch b/user/firefox-esr/seccomp-membarrier.patch
new file mode 100644
index 000000000..be1744113
--- /dev/null
+++ b/user/firefox-esr/seccomp-membarrier.patch
@@ -0,0 +1,12 @@
+musl ldso issues a membarrier when setting up TLS
+
+--- firefox-68.7.0/security/sandbox/linux/SandboxFilter.cpp 2020-04-03 19:30:03.000000000 +0000
++++ firefox-68.7.0/security/sandbox/linux/SandboxFilter.cpp 2020-04-19 04:59:30.280000000 +0000
+@@ -529,6 +529,7 @@ class SandboxPolicyCommon : public Sandb
+
+ // ipc::Shmem; also, glibc when creating threads:
+ case __NR_mprotect:
++ case __NR_membarrier:
+ return Allow();
+
+ // madvise hints used by malloc; see bug 1303813 and bug 1364533