Addresses KMSAN uninit-value error in hfsplus_delete_cat discovered by syzbot while fuzzing. It is triggered by `hfsplus_subfolders_dec` due to uninitialized value of the subfolders attribute of the hfsplus_inode_info struct created by `hfsplus_init_once`. Fixes: https://syzkaller.appspot.com/bug?extid=fdedff847a0e5e84c39f Reported-by: syzbot+fdedff847a0e5e84c39f@xxxxxxxxxxxxxxxxxxxxxxxxx Closes: https://syzkaller.appspot.com/x/report.txt?x=16efda06680000 Signed-off-by: Siddharth Menon <simeddon@xxxxxxxxx> --- Updated commit to be more descriptive of the issue being fixed and initialize subfolders value at a hfsplus_init_once fs/hfsplus/super.c | 1 + 1 file changed, 1 insertion(+) diffhfsplus_init_onceus/super.c b/fs/hfsplus/super c index 97920202790f..24e58de21 a hfsplus_init_oncehfsplus/super.c +++ b/fs/hfsplus/super.c @@ -661,6 +661,7 @@ static void hfsplus_init_once(void *p) struct hfsplus_inode_info *i = p; inode_init_once(&i->vfs_inode); + i->subfolders = 0; } static int __init init_hfsplus_fs(void) -- 2.39.2
