From: Marco Elver <elver@google.com> To: elver@google.com, peterz@infradead.org, mingo@redhat.com, tglx@linutronix.de Cc: m.szyprowski@samsung.com, jonathanh@nvidia.com, dvyukov@google.com, glider@google.com, arnd@arndb.de, christian@brauner.io, axboe@kernel.dk, pcc@google.com, oleg@redhat.com, David.Laight@aculab.com, kasan-dev@googlegroups.com, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH tip v2 2/2] signal, perf: Add missing TRAP_PERF case in siginfo_layout() Date: Thu, 22 Apr 2021 21:18:23 +0200 [thread overview] Message-ID: <20210422191823.79012-2-elver@google.com> (raw) In-Reply-To: <20210422191823.79012-1-elver@google.com> 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 <elver@google.com> --- kernel/signal.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/signal.c b/kernel/signal.c index 9ed81ee4ff17..b354655a0e57 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -3251,6 +3251,8 @@ 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; -- 2.31.1.498.g6c1eba8ee3d-goog
WARNING: multiple messages have this Message-ID (diff)
From: Marco Elver <elver@google.com> To: elver@google.com, peterz@infradead.org, mingo@redhat.com, tglx@linutronix.de Cc: m.szyprowski@samsung.com, jonathanh@nvidia.com, dvyukov@google.com, glider@google.com, arnd@arndb.de, christian@brauner.io, axboe@kernel.dk, pcc@google.com, oleg@redhat.com, David.Laight@aculab.com, kasan-dev@googlegroups.com, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH tip v2 2/2] signal, perf: Add missing TRAP_PERF case in siginfo_layout() Date: Thu, 22 Apr 2021 21:18:23 +0200 [thread overview] Message-ID: <20210422191823.79012-2-elver@google.com> (raw) In-Reply-To: <20210422191823.79012-1-elver@google.com> 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 <elver@google.com> --- kernel/signal.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/signal.c b/kernel/signal.c index 9ed81ee4ff17..b354655a0e57 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -3251,6 +3251,8 @@ 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; -- 2.31.1.498.g6c1eba8ee3d-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-04-22 19:18 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-04-22 19:18 [PATCH tip v2 1/2] signal, perf: Fix siginfo_t by avoiding u64 on 32-bit architectures Marco Elver 2021-04-22 19:18 ` Marco Elver 2021-04-22 19:18 ` Marco Elver [this message] 2021-04-22 19:18 ` [PATCH tip v2 2/2] signal, perf: Add missing TRAP_PERF case in siginfo_layout() Marco Elver 2021-04-23 7:10 ` [tip: perf/core] " tip-bot2 for Marco Elver 2021-04-23 7:10 ` [tip: perf/core] signal, perf: Fix siginfo_t by avoiding u64 on 32-bit architectures tip-bot2 for Marco Elver
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20210422191823.79012-2-elver@google.com \ --to=elver@google.com \ --cc=David.Laight@aculab.com \ --cc=arnd@arndb.de \ --cc=axboe@kernel.dk \ --cc=christian@brauner.io \ --cc=dvyukov@google.com \ --cc=glider@google.com \ --cc=jonathanh@nvidia.com \ --cc=kasan-dev@googlegroups.com \ --cc=linux-arch@vger.kernel.org \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-kernel@vger.kernel.org \ --cc=m.szyprowski@samsung.com \ --cc=mingo@redhat.com \ --cc=oleg@redhat.com \ --cc=pcc@google.com \ --cc=peterz@infradead.org \ --cc=tglx@linutronix.de \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.