From: Ashish Samant <ashish.samant@oracle.com>
Date: Sat, 30 Apr 2016 01:33:59 +0000 (-0700)
Subject: btrfs: Fix BUG_ON condition in scrub_setup_recheck_block()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2473114981a36b4f0f57cf6e9548037d547a71b7;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

btrfs: Fix BUG_ON condition in scrub_setup_recheck_block()

pagev array in scrub_block{} is of size SCRUB_MAX_PAGES_PER_BLOCK.
page_index should be checked with the same to trigger BUG_ON().

Signed-off-by: Ashish Samant <ashish.samant@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
---

diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index 96d2a0de35a8..d270c700ed31 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -1350,7 +1350,7 @@ static int scrub_setup_recheck_block(struct scrub_block *original_sblock,
 		recover->bbio = bbio;
 		recover->map_length = mapped_length;
 
-		BUG_ON(page_index >= SCRUB_PAGES_PER_RD_BIO);
+		BUG_ON(page_index >= SCRUB_MAX_PAGES_PER_BLOCK);
 
 		nmirrors = min(scrub_nr_raid_mirrors(bbio), BTRFS_MAX_MIRRORS);