The patch titled
Subject: nilfs2: initialize "struct nilfs_binfo_dat"->bi_pad field
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
nilfs2-initialize-struct-nilfs_binfo_dat-bi_pad-field.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/nilfs2-initialize-struct-nilfs_binfo_dat-bi_pad-field.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Subject: nilfs2: initialize "struct nilfs_binfo_dat"->bi_pad field
Date: Mon, 27 Mar 2023 00:21:46 +0900
nilfs_btree_assign_p() and nilfs_direct_assign_p() are not initializing
"struct nilfs_binfo_dat"->bi_pad field, causing uninit-value reports when
being passed to CRC function.
Link: https://lkml.kernel.org/r/20230326152146.15872-1-konishi.ryusuke@xxxxxxxxx
Reported-by: syzbot <syzbot+048585f3f4227bb2b49b@xxxxxxxxxxxxxxxxxxxxxxxxx>
Link: https://syzkaller.appspot.com/bug?extid=048585f3f4227bb2b49b
Reported-by: Dipanjan Das <mail.dipanjan.das@xxxxxxxxx>
Link: https://lkml.kernel.org/r/CANX2M5bVbzRi6zH3PTcNE_31TzerstOXUa9Bay4E6y6dX23_pg@xxxxxxxxxxxxxx
Signed-off-by: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@xxxxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/nilfs2/btree.c | 1 +
fs/nilfs2/direct.c | 1 +
2 files changed, 2 insertions(+)
--- a/fs/nilfs2/btree.c~nilfs2-initialize-struct-nilfs_binfo_dat-bi_pad-field
+++ a/fs/nilfs2/btree.c
@@ -2219,6 +2219,7 @@ static int nilfs_btree_assign_p(struct n
/* on-disk format */
binfo->bi_dat.bi_blkoff = cpu_to_le64(key);
binfo->bi_dat.bi_level = level;
+ memset(binfo->bi_dat.bi_pad, 0, sizeof(binfo->bi_dat.bi_pad));
return 0;
}
--- a/fs/nilfs2/direct.c~nilfs2-initialize-struct-nilfs_binfo_dat-bi_pad-field
+++ a/fs/nilfs2/direct.c
@@ -314,6 +314,7 @@ static int nilfs_direct_assign_p(struct
binfo->bi_dat.bi_blkoff = cpu_to_le64(key);
binfo->bi_dat.bi_level = 0;
+ memset(binfo->bi_dat.bi_pad, 0, sizeof(binfo->bi_dat.bi_pad));
return 0;
}
_
Patches currently in -mm which might be from penguin-kernel@xxxxxxxxxxxxxxxxxxx are
nilfs2-initialize-struct-nilfs_binfo_dat-bi_pad-field.patch
