Peter Zijlstra f7df71d26b unwind_user/x86: Teach FP unwind about start of function ...

[ Upstream commit ae25884ad7 ]

When userspace is interrupted at the start of a function, before we
get a chance to complete the frame, unwind will miss one caller.

X86 has a uprobe specific fixup for this, add bits to the generic
unwinder to support this.

Suggested-by: Jens Remus <jremus@linux.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20251024145156.GM4068168@noisy.programming.kicks-ass.net
Stable-dep-of: d55c571e43 ("x86/uprobes: Fix XOL allocation failure for 32-bit tasks")
Signed-off-by: Sasha Levin <sashal@kernel.org>

2026-03-12 07:09:28 -04:00

..

deferred.c

unwind: Finish up unwind when a task exits

2025-07-31 10:20:11 -04:00

Makefile

…

user.c

unwind_user/x86: Teach FP unwind about start of function

2026-03-12 07:09:28 -04:00