From: Peter Zijlstra <peterz@infradead.org>
To: jolsa@kernel.org, oleg@redhat.com, andrii@kernel.org,
mhiramat@kernel.org
Cc: linux-kernel@vger.kernel.org, peterz@infradead.org,
alx@kernel.org, eyal.birger@gmail.com, kees@kernel.org,
bpf@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
x86@kernel.org, songliubraving@fb.com, yhs@fb.com,
john.fastabend@gmail.com, haoluo@google.com, rostedt@goodmis.org,
alan.maguire@oracle.com, David.Laight@ACULAB.COM,
thomas@t-8ch.de, mingo@kernel.org, rick.p.edgecombe@intel.com
Subject: [PATCH 6/6] uprobes/x86: Add SLS mitigation to the trampolines
Date: Thu, 21 Aug 2025 14:28:28 +0200 [thread overview]
Message-ID: <20250821123657.277506098@infradead.org> (raw)
In-Reply-To: 20250821122822.671515652@infradead.org
It is trivial; no reason not to.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
arch/x86/kernel/uprobes.c | 2 ++
1 file changed, 2 insertions(+)
--- a/arch/x86/kernel/uprobes.c
+++ b/arch/x86/kernel/uprobes.c
@@ -336,6 +336,7 @@ asm (
* call ret.
*/
"ret\n"
+ "int3\n"
".global uretprobe_trampoline_end\n"
"uretprobe_trampoline_end:\n"
".popsection\n"
@@ -891,6 +892,7 @@ asm (
"pop %r11\n"
"pop %rcx\n"
"ret\n"
+ "int3\n"
".balign " __stringify(PAGE_SIZE) "\n"
".popsection\n"
);
next prev parent reply other threads:[~2025-08-21 12:42 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-21 12:28 [PATCH 0/6] uprobes/x86: Cleanups and fixes Peter Zijlstra
2025-08-21 12:28 ` [PATCH 1/6] uprobes/x86: Add struct uretprobe_syscall_args Peter Zijlstra
2025-08-21 12:28 ` [PATCH 2/6] uprobes/x86: Optimize is_optimize() Peter Zijlstra
2025-08-26 5:51 ` David Laight
2025-08-26 8:18 ` Peter Zijlstra
2025-08-27 19:32 ` David Laight
2025-08-26 8:25 ` Jiri Olsa
2025-08-26 8:33 ` Jiri Olsa
2025-08-21 12:28 ` [PATCH 3/6] uprobes/x86: Accept more NOP forms Peter Zijlstra
2025-08-21 12:28 ` [PATCH 4/6] uprobes/x86: Fix uprobe syscall vs shadow stack Peter Zijlstra
2025-08-21 18:26 ` Edgecombe, Rick P
2025-08-21 12:28 ` [PATCH 5/6] uprobes/x86: Make asm style consistent Peter Zijlstra
2025-08-21 12:28 ` Peter Zijlstra [this message]
2025-08-21 14:18 ` [PATCH 0/6] uprobes/x86: Cleanups and fixes Jiri Olsa
2025-08-21 18:27 ` Edgecombe, Rick P
2025-08-21 19:52 ` Jiri Olsa
2025-08-21 19:57 ` Edgecombe, Rick P
2025-08-22 8:42 ` Jiri Olsa
2025-08-22 18:05 ` Andrii Nakryiko
2025-08-22 15:51 ` Oleg Nesterov
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