From: Jiri Olsa <jolsa@kernel.org>
To: Steven Rostedt <rostedt@goodmis.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Oleg Nesterov <oleg@redhat.com>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>
Cc: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
linux-api@vger.kernel.org, linux-man@vger.kernel.org,
x86@kernel.org, bpf@vger.kernel.org,
Song Liu <songliubraving@fb.com>, Yonghong Song <yhs@fb.com>,
John Fastabend <john.fastabend@gmail.com>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
"Borislav Petkov (AMD)" <bp@alien8.de>,
Ingo Molnar <mingo@redhat.com>, Andy Lutomirski <luto@kernel.org>,
"Edgecombe, Rick P" <rick.p.edgecombe@intel.com>,
Deepak Gupta <debug@rivosinc.com>
Subject: [PATCHv5 bpf-next 1/8] uprobe: Wire up uretprobe system call
Date: Tue, 7 May 2024 12:53:14 +0200 [thread overview]
Message-ID: <20240507105321.71524-2-jolsa@kernel.org> (raw)
In-Reply-To: <20240507105321.71524-1-jolsa@kernel.org>
Wiring up uretprobe system call, which comes in following changes.
We need to do the wiring before, because the uretprobe implementation
needs the syscall number.
Note at the moment uretprobe syscall is supported only for native
64-bit process.
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
arch/x86/entry/syscalls/syscall_64.tbl | 1 +
include/linux/syscalls.h | 2 ++
include/uapi/asm-generic/unistd.h | 5 ++++-
kernel/sys_ni.c | 2 ++
4 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl
index 7e8d46f4147f..af0a33ab06ee 100644
--- a/arch/x86/entry/syscalls/syscall_64.tbl
+++ b/arch/x86/entry/syscalls/syscall_64.tbl
@@ -383,6 +383,7 @@
459 common lsm_get_self_attr sys_lsm_get_self_attr
460 common lsm_set_self_attr sys_lsm_set_self_attr
461 common lsm_list_modules sys_lsm_list_modules
+462 64 uretprobe sys_uretprobe
#
# Due to a historical design error, certain syscalls are numbered differently
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index e619ac10cd23..5318e0e76799 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -972,6 +972,8 @@ asmlinkage long sys_lsm_list_modules(u64 *ids, u32 *size, u32 flags);
/* x86 */
asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int on);
+asmlinkage long sys_uretprobe(void);
+
/* pciconfig: alpha, arm, arm64, ia64, sparc */
asmlinkage long sys_pciconfig_read(unsigned long bus, unsigned long dfn,
unsigned long off, unsigned long len,
diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h
index 75f00965ab15..8a747cd1d735 100644
--- a/include/uapi/asm-generic/unistd.h
+++ b/include/uapi/asm-generic/unistd.h
@@ -842,8 +842,11 @@ __SYSCALL(__NR_lsm_set_self_attr, sys_lsm_set_self_attr)
#define __NR_lsm_list_modules 461
__SYSCALL(__NR_lsm_list_modules, sys_lsm_list_modules)
+#define __NR_uretprobe 462
+__SYSCALL(__NR_uretprobe, sys_uretprobe)
+
#undef __NR_syscalls
-#define __NR_syscalls 462
+#define __NR_syscalls 463
/*
* 32 bit systems traditionally used different
diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c
index faad00cce269..be6195e0d078 100644
--- a/kernel/sys_ni.c
+++ b/kernel/sys_ni.c
@@ -391,3 +391,5 @@ COND_SYSCALL(setuid16);
/* restartable sequence */
COND_SYSCALL(rseq);
+
+COND_SYSCALL(uretprobe);
--
2.44.0
next prev parent reply other threads:[~2024-05-07 10:53 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-07 10:53 [PATCHv5 bpf-next 0/8] uprobe: uretprobe speed up Jiri Olsa
2024-05-07 10:53 ` Jiri Olsa [this message]
2024-05-07 10:53 ` [PATCHv5 bpf-next 2/8] uprobe: Add uretprobe syscall to speed up return probe Jiri Olsa
2024-05-07 10:53 ` [PATCHv5 bpf-next 3/8] selftests/bpf: Add uretprobe syscall test for regs integrity Jiri Olsa
2024-05-07 10:53 ` [PATCHv5 bpf-next 4/8] selftests/bpf: Add uretprobe syscall test for regs changes Jiri Olsa
2024-05-07 10:53 ` [PATCHv5 bpf-next 5/8] selftests/bpf: Add uretprobe syscall call from user space test Jiri Olsa
2024-05-07 16:57 ` Andrii Nakryiko
2024-05-07 10:53 ` [PATCHv5 bpf-next 6/8] x86/shstk: Add return uprobe support Jiri Olsa
2024-05-07 17:35 ` Edgecombe, Rick P
2024-05-09 8:30 ` Jiri Olsa
2024-05-09 16:24 ` Edgecombe, Rick P
2024-05-11 21:09 ` Jiri Olsa
2024-05-13 9:50 ` Masami Hiramatsu
2024-05-13 17:12 ` Edgecombe, Rick P
2024-05-13 21:23 ` Jiri Olsa
2024-05-15 1:10 ` Edgecombe, Rick P
2024-05-15 1:44 ` Deepak Gupta
2024-05-15 11:19 ` Oleg Nesterov
2024-05-15 14:36 ` Jiri Olsa
2024-05-15 15:18 ` Edgecombe, Rick P
2024-05-15 15:26 ` Oleg Nesterov
2024-05-15 15:31 ` Edgecombe, Rick P
2024-05-15 11:35 ` Oleg Nesterov
2024-05-15 15:13 ` Edgecombe, Rick P
2024-05-15 15:42 ` Oleg Nesterov
2024-05-19 22:18 ` Jiri Olsa
2024-05-21 1:31 ` Edgecombe, Rick P
2024-05-21 10:11 ` Jiri Olsa
2024-05-07 10:53 ` [PATCHv5 bpf-next 7/8] selftests/x86: Add return uprobe shadow stack test Jiri Olsa
2024-05-13 9:45 ` Masami Hiramatsu
2024-05-13 21:28 ` Jiri Olsa
2024-05-07 10:53 ` [PATCHv5 8/8] man2: Add uretprobe syscall page Jiri Olsa
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