From ed8e50800bf4c2d904db9c75408a67085e6cca3d Mon Sep 17 00:00:00 2001 From: Marco Elver Date: Thu, 22 Apr 2021 21:18:23 +0200 Subject: signal, perf: Add missing TRAP_PERF case in siginfo_layout() Add the missing TRAP_PERF case in siginfo_layout() for interpreting the layout correctly as SIL_PERF_EVENT instead of just SIL_FAULT. This ensures the si_perf field is copied and not just the si_addr field. This was caught and tested by running the perf_events/sigtrap_threads kselftest as a 32-bit binary with a 64-bit kernel. Fixes: fb6cc127e0b6 ("signal: Introduce TRAP_PERF si_code and si_perf to siginfo") Signed-off-by: Marco Elver Signed-off-by: Peter Zijlstra (Intel) Link: https://lkml.kernel.org/r/20210422191823.79012-2-elver@google.com --- kernel/signal.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'kernel/signal.c') diff --git a/kernel/signal.c b/kernel/signal.c index f68351825e5e..343d87c95c78 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -3206,6 +3206,8 @@ enum siginfo_layout siginfo_layout(unsigned sig, int si_code) else if ((sig == SIGSEGV) && (si_code == SEGV_PKUERR)) layout = SIL_FAULT_PKUERR; #endif + else if ((sig == SIGTRAP) && (si_code == TRAP_PERF)) + layout = SIL_PERF_EVENT; } else if (si_code <= NSIGPOLL) layout = SIL_POLL; -- cgit v1.2.3-59-g8ed1b