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[173.197.98.118]) by smtp.gmail.com with ESMTPSA id z3-20020a1709028f8300b00192cf87ed25sm12391334plo.35.2023.02.01.16.52.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 01 Feb 2023 16:52:09 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: mark.cave-ayland@ilande.co.uk, laurent@vivier.eu, iii@linux.ibm.com Subject: [PATCH 01/14] linux-user/sparc: Raise SIGILL for all unhandled software traps Date: Wed, 1 Feb 2023 14:51:51 -1000 Message-Id: <20230202005204.2055899-2-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230202005204.2055899-1-richard.henderson@linaro.org> References: <20230202005204.2055899-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::633; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x633.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org The linux kernel's trap tables vector all unassigned trap numbers to BAD_TRAP, which then raises SIGILL. Reported-by: Ilya Leoshkevich Signed-off-by: Richard Henderson --- linux-user/sparc/cpu_loop.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/linux-user/sparc/cpu_loop.c b/linux-user/sparc/cpu_loop.c index 434c90a55f..c120c42278 100644 --- a/linux-user/sparc/cpu_loop.c +++ b/linux-user/sparc/cpu_loop.c @@ -248,6 +248,14 @@ void cpu_loop (CPUSPARCState *env) cpu_exec_step_atomic(cs); break; default: + /* + * Most software trap numbers vector to BAD_TRAP. + * Handle anything not explicitly matched above. + */ + if (trapnr >= TT_TRAP && trapnr <= TT_TRAP + 0x7f) { + force_sig_fault(TARGET_SIGILL, ILL_ILLTRP, env->pc); + break; + } fprintf(stderr, "Unhandled trap: 0x%x\n", trapnr); cpu_dump_state(cs, stderr, 0); exit(EXIT_FAILURE); -- 2.34.1