Yuezhang Mo af089264d1 exfat: fix the infinite loop in exfat_find_last_cluster() ... [ Upstream commit b0522303f6 ] In exfat_find_last_cluster(), the cluster chain is traversed until the EOF cluster. If the cluster chain includes a loop due to file system corruption, the EOF cluster cannot be traversed, resulting in an infinite loop. If the number of clusters indicated by the file size is inconsistent with the cluster chain length, exfat_find_last_cluster() will return an error, so if this inconsistency is found, the traversal can be aborted without traversing to the EOF cluster. Reported-by: syzbot+f7d147e6db52b1e09dba@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=f7d147e6db52b1e09dba Tested-by: syzbot+f7d147e6db52b1e09dba@syzkaller.appspotmail.com Fixes: 31023864e6 ("exfat: add fat entry operations") Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2025-04-10 14:37:35 +02:00
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balloc.c	exfat: fix soft lockup in exfat_clear_bitmap	2025-03-13 12:58:32 +01:00
cache.c	exfat: fix use of uninitialized spinlock on error path	2020-10-07 14:27:13 +09:00
dir.c	exfat: fix the infinite loop in exfat_readdir()	2025-01-17 13:36:10 +01:00
exfat_fs.h	exfat: fix soft lockup in exfat_clear_bitmap	2025-03-13 12:58:32 +01:00
exfat_raw.h	exfat: handle unreconized benign secondary entries	2023-02-27 21:14:46 +09:00
fatent.c	exfat: fix the infinite loop in exfat_find_last_cluster()	2025-04-10 14:37:35 +02:00
file.c	fs: pass the request_mask to generic_fillattr	2023-08-09 08:56:36 +02:00
inode.c	exfat: convert to ctime accessor functions	2023-07-13 10:28:07 +02:00
Kconfig	fs: add CONFIG_BUFFER_HEAD	2023-08-02 09:13:09 -06:00
Makefile	exfat: add Kconfig and Makefile	2020-03-05 21:00:40 -05:00
misc.c	exfat: Expand exfat_err() and co directly to pr_*() macro	2022-08-01 10:14:07 +09:00
namei.c	exfat: fix uninit-value in __exfat_get_dentry_set	2024-12-09 10:32:45 +01:00
nls.c	exfat: Drop superfluous new line for error messages	2022-08-01 10:14:07 +09:00
super.c	v6.6-vfs.super	2023-08-28 11:04:18 -07:00