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1629a7860e
Synchronous signals must accommodate a synchronous signal being
raised during delivery, as asynchronous ones do. For example
badframe errors during delivery will cause SIGSEGV to be raised.
Without this fix, cpu_loop() runs process_pending_signals() which
delivers the first synchronous signal (e.g., SIGILL) which fails
to set the handler and forces SIGSEGV, but that is not picked up.
process_pending_signals() returns. Then cpu_loop() runs cpu_exec()
again, which attempts to execute the same instruction, another
SIGILL.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20260321135624.581398-3-npiggin@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit 7e966ef38f)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>