From: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Date: Tue, 26 Sep 2023 08:19:08 +0000 (+0300)
Subject: fs/ntfs3: Fix possible NULL-ptr-deref in ni_readpage_cmpr()
X-Git-Tag: v6.1.62~49
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c8cbae3cbbc4b11ba5970765dee1c4d6759d0be5;p=thirdparty%2Fkernel%2Fstable.git

fs/ntfs3: Fix possible NULL-ptr-deref in ni_readpage_cmpr()

[ Upstream commit 32e9212256b88f35466642f9c939bb40cfb2c2de ]

Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c
index 166c3c49530ec..bb7e33c240737 100644
--- a/fs/ntfs3/frecord.c
+++ b/fs/ntfs3/frecord.c
@@ -2149,7 +2149,7 @@ out1:
 
 	for (i = 0; i < pages_per_frame; i++) {
 		pg = pages[i];
-		if (i == idx)
+		if (i == idx || !pg)
 			continue;
 		unlock_page(pg);
 		put_page(pg);