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Fri, 04 Sep 2026 01:17:21 -0700 (PDT) Received: from sw08.internal.sifive.com ([4.53.31.132]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3339b8f44d7sm4767183eec.22.2026.09.04.01.17.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Sep 2026 01:17:21 -0700 (PDT) From: Nia Su Subject: [PATCH 0/2] lib: sbi: Fix stale trap_context/prev_context linking Date: Fri, 04 Sep 2026 01:16:42 -0700 Message-Id: <20260904-trap-context-fix-v1-0-6bf7fa45d5f1@sifive.com> MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAG5+mmoC/x2MywqAIBAAfyX23IKaPexXokOPrfaioRKC9O9Jx xmYyRDIMwUYqwyeHg7sbAFZV7Bdiz0JeS8MSqhOGKEw+uXGzdlIKeLBCVdD/aC1NG1DULLbU9H /cprf9wNJetWZYgAAAA== X-Change-ID: 20260902-trap-context-fix-b9e78441953e To: opensbi@lists.infradead.org Cc: Nia Su , Nylon Chen , Nick Hu , Zong Li , Evgeny Voevodin X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=746; i=nia.su@sifive.com; h=from:subject:message-id; bh=E/WF3l7gugRjlLfJTkBhSIK8UxUtQZu/oWVP6SyITqM=; b=owEBbQKS/ZANAwAIAYihNJa3+YfgAcsmYgBqmn6PoUIV3Wr7TUtWpyWgECCNAwZGOY3yvISKI ZihznnocAKJAjMEAAEIAB0WIQThGl/T4FqBBU9NhIeIoTSWt/mH4AUCapp+jwAKCRCIoTSWt/mH 4G+zD/9QCkp4N9PmHowX+yaHSvgrnZXkQE8U/axjaTwudDjg5vCQtJWnU5Ep8iBamCaKYJifelS hPpz4KkvxvEnpUCfRIc3foEpZD4s61VmAY/azfobnc9nuKcz3ELQSYLMJwaMbrKCRoon3+DDmWr g5IwdfrjdxBHqioj24yI99XHnNu853o28oH0vDovu10aK1+qdMs+fYmW6UuBzi80oMYFye3TG0K 3oQmFiCM6JD1bL4m1TvgM2aLhNZBmotJM6bLSpI4NxjaXMlgt+tSkXa7F0tJYlx7RpsvX/tHnCl B564tWUEwbe3SJNeu8YKc3fyAS4+Et/SG+9efvBDDmjQedjz8PdY841hYvlaxfA0KX9BZOnQ89E 9YKlLNCqA5VszXdRn9no1j5vDYciS7p8oLlbCBenaqZOBp9y2j20y8T4tNLA0gvcKXg8Akzlg11 oYsGUvkahMPCdWdmmM8GEZdLmSV1v8OFF5E6XzZDJ1u39mKbt/dvtkREo6mcKyXpzlMzgWTd8ug Iinq8GLMI/tYyz5zXuoW/7uV6/Rogo9xLKgZVBqZcKKaBnmkOLom5HUhnwM6S3YCbdKVOwq5IY6 j45DNt4wU7inv2eogpRPsSENsmf0Pouv08z9ylKRSMIqLKlaLddyKUnKm9Q2e5qGwVKBpOtnm3V 2NB8VBYrPEFl/1A== X-Developer-Key: i=nia.su@sifive.com; a=openpgp; fpr=55235C875092ACC578EFCE6CD1699E646B29B1AF X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260904_011723_166062_7CAECFBF X-CRM114-Status: UNSURE ( 6.50 ) X-CRM114-Notice: Please train this message. X-BeenThere: opensbi@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "opensbi" Errors-To: opensbi-bounces+opensbi=archiver.kernel.org@lists.infradead.org Patch 1 clears scratch->trap_context on warm boot, since non-retentive suspend/resume jumps straight there without restoring it, leaving a stale pointer misused as the next trap's prev_context. Patch 2 fixes sbi_trap_rnmi_handler() to link prev_context on entry and restore it on exit, the same way sbi_trap_handler() does. Signed-off-by: Nia Su --- Nia Su (2): firmware: Clear scratch->trap_context on warm boot lib: sbi: Fix stale prev_context in RNMI handler firmware/fw_base.S | 3 +++ lib/sbi/sbi_trap.c | 10 ++++++++-- 2 files changed, 11 insertions(+), 2 deletions(-) --- base-commit: 35511bc6ee1c9c17b6a89b44c52e2044bb51b979 change-id: 20260902-trap-context-fix-b9e78441953e -- -- opensbi mailing list opensbi@lists.infradead.org http://lists.infradead.org/mailman/listinfo/opensbi