mm: zswap: warn when referencing a dead entry

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Put a standard sanity check on zswap_entry_get() for UAF scenario.

Link: https://lkml.kernel.org/r/20240130014208.565554-5-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Nhat Pham <nphamcs@gmail.com>
Acked-by: Yosry Ahmed <yosryahmed@google.com>
Reviewed-by: Chengming Zhou <zhouchengming@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

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Johannes Weiner 2024-01-29 20:36:40 -05:00 • committed by Andrew Morton

parent 7dd1f7f0fc

commit e477559ca6

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mm/zswap.c

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