Commit 02c56362 authored by Andrii Nakryiko's avatar Andrii Nakryiko Committed by Ingo Molnar
Browse files

uprobes: Guard against kmemdup() failing in dup_return_instance() 



If kmemdup() failed to alloc memory, don't proceed with extra_consumers
copy.

Fixes: e62f2d492728 ("uprobes: Simplify session consumer tracking")
Signed-off-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20241206183436.968068-1-andrii@kernel.org
parent d29e744c

kernel/events/uprobes.c

+2 −0
Original line number Diff line number Diff line
@@ -2048,6 +2048,8 @@ static struct return_instance *dup_return_instance(struct return_instance *old) 
	struct return_instance *ri;



	ri = kmemdup(old, sizeof(*ri), GFP_KERNEL);

	if (!ri)

		return NULL;



	if (unlikely(old->cons_cnt > 1)) {

		ri->extra_consumers = kmemdup(old->extra_consumers,