From d52c499b476b2f82eebecdd5fc4be8318a4e8ef7 Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Sat, 22 Dec 2018 01:39:52 -0600 Subject: [PATCH] lightnvm: pblk: fix use-after-free bug Remove one of the calls to function bio_put(), so *bio* is only freed once. Notice that bio is being dereferenced in bio_put(), hence leading to a use-after-free bug once *bio* has already been freed. Addresses-Coverity-ID: 1475952 ("Use after free") Fixes: 55d8ec35398e ("lightnvm: pblk: support packed metadata") Signed-off-by: Gustavo A. R. Silva Signed-off-by: Jens Axboe --- drivers/lightnvm/pblk-recovery.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/lightnvm/pblk-recovery.c b/drivers/lightnvm/pblk-recovery.c index 3fcf062d752c..5ee20da7bdb3 100644 --- a/drivers/lightnvm/pblk-recovery.c +++ b/drivers/lightnvm/pblk-recovery.c @@ -418,7 +418,6 @@ retry_rq: if (ret) { pblk_err(pblk, "I/O submission failed: %d\n", ret); bio_put(bio); - bio_put(bio); return ret; } -- 2.11.0