diff options
| author | Andrii Nakryiko <andrii@kernel.org> | 2024-12-06 10:34:36 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2024-12-09 15:50:32 +0100 |
| commit | 02c56362a7d3eccc209d5c00d73a06513d2504d5 (patch) | |
| tree | e0d7eb482d2fd1f68256f7fbf2ef064915f37d71 | |
| parent | d29e744c71673a71da8f8522799ee02744cad6c9 (diff) | |
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: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20241206183436.968068-1-andrii@kernel.org
| -rw-r--r-- | kernel/events/uprobes.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c index 1af950208c2b..1f75a2f91206 100644 --- a/kernel/events/uprobes.c +++ b/kernel/events/uprobes.c @@ -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, |