LibSandbox: Report sandbox violations instead of killing the process#10240
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Problem: Crash on macOS 15 due to the sandbox code. Cause: A helper symbolizes its own startup backtraces by reading its object files, which pulls in a code-signing check that macOS 15 denies. send-signal SIGSYS on the deny-default makes that process-killing fatal. Fix: Drop send-signal from the catch-all deny-default, so a violation is just denied+logged (the call returns EPERM), rather than fatally killing the process. That matches Chrome and Firefox: both make the deny-default non-fatal. The syscall-unix SIGKILL still hard-kills the real vectors.
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Problem: Crash on macOS 15 and 27 beta due to the sandbox code.
Cause: A helper symbolizes its own startup backtraces by reading its object files, which pulls in a code-signing check that macOS 15 (and 27?) denies.
send-signal SIGSYSon the deny-default makes that process-killing fatal.Fix: Drop
send-signalfrom the catch-all deny-default, so a violation is just denied+logged (the call returnsEPERM), rather than fatally killing the process. That matches Chrome and Firefox: both make the deny-default non-fatal. Thesyscall-unix SIGKILLstill hard-kills the real vectors.Hit this on my PR #9156 branch, which adds a GitHub-hosted macOS 15 (Sanitizer) CI job for AppKit+VoiceOver testing.
Also fixes #10379, which the issue reporter independently hit in a macOS 27 Golden Gate Developer Beta 2 environment. So perhaps this is somehow not actually related to the OS version. Or else I guess maybe the made some system change in the 27 beta that flipped it back to how it was in 15.