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From: Gabriel Krisman Bertazi <krisman@collabora.com>
To: luto@kernel.org, tglx@linutronix.de, keescook@chromium.org
Cc: gofmanp@gmail.com, christian.brauner@ubuntu.com,
	peterz@infradead.org, willy@infradead.org, shuah@kernel.org,
	linux-kernel@vger.kernel.org, linux-api@vger.kernel.org,
	linux-kselftest@vger.kernel.org, x86@kernel.org,
	Gabriel Krisman Bertazi <krisman@collabora.com>,
	kernel@collabora.com
Subject: [PATCH v8 2/7] signal: Expose SYS_USER_DISPATCH si_code type
Date: Fri, 27 Nov 2020 14:32:33 -0500	[thread overview]
Message-ID: <20201127193238.821364-3-krisman@collabora.com> (raw)
In-Reply-To: <20201127193238.821364-1-krisman@collabora.com>

SYS_USER_DISPATCH will be triggered when a syscall is sent to userspace
by the Syscall User Dispatch mechanism.  This adjusts eventual
BUILD_BUG_ON around the tree.

Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 arch/x86/kernel/signal_compat.c    | 2 +-
 include/uapi/asm-generic/siginfo.h | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/signal_compat.c b/arch/x86/kernel/signal_compat.c
index a7f3e12cfbdb..d7b51870f16b 100644
--- a/arch/x86/kernel/signal_compat.c
+++ b/arch/x86/kernel/signal_compat.c
@@ -31,7 +31,7 @@ static inline void signal_compat_build_tests(void)
 	BUILD_BUG_ON(NSIGBUS  != 5);
 	BUILD_BUG_ON(NSIGTRAP != 5);
 	BUILD_BUG_ON(NSIGCHLD != 6);
-	BUILD_BUG_ON(NSIGSYS  != 1);
+	BUILD_BUG_ON(NSIGSYS  != 2);
 
 	/* This is part of the ABI and can never change in size: */
 	BUILD_BUG_ON(sizeof(compat_siginfo_t) != 128);
diff --git a/include/uapi/asm-generic/siginfo.h b/include/uapi/asm-generic/siginfo.h
index 7aacf9389010..d2597000407a 100644
--- a/include/uapi/asm-generic/siginfo.h
+++ b/include/uapi/asm-generic/siginfo.h
@@ -286,7 +286,8 @@ typedef struct siginfo {
  * SIGSYS si_codes
  */
 #define SYS_SECCOMP	1	/* seccomp triggered */
-#define NSIGSYS		1
+#define SYS_USER_DISPATCH 2	/* syscall user dispatch triggered */
+#define NSIGSYS		2
 
 /*
  * SIGEMT si_codes
-- 
2.29.2


  parent reply	other threads:[~2020-11-27 19:52 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-27 19:32 [PATCH v8 0/7] Syscall User Dispatch Gabriel Krisman Bertazi
2020-11-27 19:32 ` [PATCH v8 1/7] x86: vdso: Expose sigreturn address on vdso to the kernel Gabriel Krisman Bertazi
2020-12-02  9:38   ` [tip: core/entry] " tip-bot2 for Gabriel Krisman Bertazi
2020-11-27 19:32 ` Gabriel Krisman Bertazi [this message]
2020-12-02  9:38   ` [tip: core/entry] signal: Expose SYS_USER_DISPATCH si_code type tip-bot2 for Gabriel Krisman Bertazi
2020-11-27 19:32 ` [PATCH v8 3/7] kernel: Implement selective syscall userspace redirection Gabriel Krisman Bertazi
2020-12-01 22:57   ` Kees Cook
2020-12-02  9:38   ` [tip: core/entry] " tip-bot2 for Gabriel Krisman Bertazi
2020-12-02 14:12   ` tip-bot2 for Gabriel Krisman Bertazi
2021-06-30 21:44   ` [PATCH v8 3/7] " Eric W. Biederman
2021-07-01 17:09     ` Gabriel Krisman Bertazi
2020-11-27 19:32 ` [PATCH v8 4/7] entry: Support Syscall User Dispatch on common syscall entry Gabriel Krisman Bertazi
2020-12-01 22:57   ` Kees Cook
2020-12-02  0:04   ` Andy Lutomirski
2020-12-02  9:38   ` [tip: core/entry] " tip-bot2 for Gabriel Krisman Bertazi
2020-12-02 14:12   ` tip-bot2 for Gabriel Krisman Bertazi
2020-11-27 19:32 ` [PATCH v8 5/7] selftests: Add kselftest for syscall user dispatch Gabriel Krisman Bertazi
2020-12-02  9:38   ` [tip: core/entry] " tip-bot2 for Gabriel Krisman Bertazi
2020-12-02 14:12   ` tip-bot2 for Gabriel Krisman Bertazi
2020-11-27 19:32 ` [PATCH v8 6/7] selftests: Add benchmark " Gabriel Krisman Bertazi
2020-12-01 22:58   ` Kees Cook
2020-12-02  9:38   ` [tip: core/entry] " tip-bot2 for Gabriel Krisman Bertazi
2020-12-02 14:12   ` tip-bot2 for Gabriel Krisman Bertazi
2020-11-27 19:32 ` [PATCH v8 7/7] docs: Document Syscall User Dispatch Gabriel Krisman Bertazi
2020-12-01 22:21   ` Jonathan Corbet
2020-12-01 23:46     ` Thomas Gleixner
2020-12-01 22:53   ` Thomas Gleixner
2020-12-02  9:38   ` [tip: core/entry] " tip-bot2 for Gabriel Krisman Bertazi
2020-12-02 14:12   ` tip-bot2 for Gabriel Krisman Bertazi
2020-12-02  0:04 ` [PATCH v8 0/7] " Andy Lutomirski

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