This is a note to let you know that I've just added the patch titled
x86/entry: Fix noinstr fail in __do_fast_syscall_32()
to the 5.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
x86-entry-fix-noinstr-fail-in-__do_fast_syscall_32.patch
and it can be found in the queue-5.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit f94f91870d129dd82d05f6fd4aa3344cf3397142
Author: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Date: Mon Jun 21 13:12:34 2021 +0200
x86/entry: Fix noinstr fail in __do_fast_syscall_32()
[ Upstream commit 240001d4e3041832e8a2654adc3ccf1683132b92 ]
Fix:
vmlinux.o: warning: objtool: __do_fast_syscall_32()+0xf5: call to trace_hardirqs_off() leaves .noinstr.text section
Fixes: 5d5675df792f ("x86/entry: Fix entry/exit mismatch on failed fast 32-bit syscalls")
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20210621120120.467898710@xxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/x86/entry/common.c b/arch/x86/entry/common.c
index 4efd39aacb9f..cbe19c87e6be 100644
--- a/arch/x86/entry/common.c
+++ b/arch/x86/entry/common.c
@@ -127,8 +127,8 @@ static noinstr bool __do_fast_syscall_32(struct pt_regs *regs)
/* User code screwed up. */
regs->ax = -EFAULT;
- instrumentation_end();
local_irq_disable();
+ instrumentation_end();
irqentry_exit_to_user_mode(regs);
return false;
}
