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Fri, 03 Jul 2026 00:49:58 -0700 (PDT) From: "Mukesh Kumar Chaurasiya (IBM)" To: maddy@linux.ibm.com, mpe@ellerman.id.au, npiggin@gmail.com, chleroy@kernel.org, mkchauras@linux.ibm.com, sshegde@linux.ibm.com, mkchauras@gmail.com, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: [PATCH] powerpc/ptrace: Add offsetof check for exit_flags in pt_regs_check() Date: Fri, 3 Jul 2026 13:19:48 +0530 Message-ID: <20260703074948.1668744-1-mkchauras@gmail.com> X-Mailer: git-send-email 2.55.0 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit pt_regs_check() verifies that fields shared between struct pt_regs and struct user_pt_regs sit at the same offset, to catch any accidental layout divergence between the kernel and uapi structures. Add the missing check for exit_flags, following the same pattern as the existing checks for result, dsisr, dar and the other shared fields. Fixes: d7a6797e0bc1 ("powerpc: add exit_flags field in pt_regs") Signed-off-by: Mukesh Kumar Chaurasiya (IBM) --- arch/powerpc/kernel/ptrace/ptrace.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/powerpc/kernel/ptrace/ptrace.c b/arch/powerpc/kernel/ptrace/ptrace.c index 316d4f5ead8e..fb3fec73f66a 100644 --- a/arch/powerpc/kernel/ptrace/ptrace.c +++ b/arch/powerpc/kernel/ptrace/ptrace.c @@ -235,6 +235,8 @@ void __init pt_regs_check(void) offsetof(struct user_pt_regs, dsisr)); BUILD_BUG_ON(offsetof(struct pt_regs, result) != offsetof(struct user_pt_regs, result)); + BUILD_BUG_ON(offsetof(struct pt_regs, exit_flags) != + offsetof(struct user_pt_regs, exit_flags)); BUILD_BUG_ON(sizeof(struct user_pt_regs) > sizeof(struct pt_regs)); -- 2.55.0