Yuezhang Mo d141e72aef exfat: fix the new buffer was not zeroed before writing ... In exfat, not only the newly allocated space will be mapped as the new buffer, but also the space between ->valid_size and the file size will be mapped as the new buffer. If the buffer is mapped as new in ->write_begin(), it will be zeroed. But if the buffer has been mapped as new before ->write_begin(), ->write_begin() will not zero them, resulting in access to uninitialized data. So this commit uses folio_zero_new_buffers() to zero the new buffers after ->write_begin(). Fixes: 6630ea4910 ("exfat: move extend valid_size into ->page_mkwrite()") Reported-by: syzbot+91ae49e1c1a2634d20c0@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=91ae49e1c1a2634d20c0 Tested-by: syzbot+91ae49e1c1a2634d20c0@syzkaller.appspotmail.com Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>		2024-12-17 20:22:08 +09:00
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balloc.c	exfat: fix memory leak in exfat_load_bitmap()	2024-09-18 07:40:58 +09:00
cache.c	move asm/unaligned.h to linux/unaligned.h	2024-10-02 17:23:23 -04:00
dir.c	exfat: fix the infinite loop in exfat_readdir()	2024-12-17 20:22:05 +09:00
exfat_fs.h	exfat: reduce FAT chain traversal	2024-11-25 17:08:27 +09:00
exfat_raw.h	exfat: add ioctls for accessing attributes	2023-10-31 10:00:51 +09:00
fatent.c	exfat: fix the infinite loop in __exfat_free_cluster()	2024-12-17 20:22:02 +09:00
file.c	exfat: fix the new buffer was not zeroed before writing	2024-12-17 20:22:08 +09:00
inode.c	exfat: add exfat_get_dentry_set_by_ei() helper	2024-11-25 17:08:23 +09:00
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: convert to new timestamp accessors	2023-10-18 13:26:21 +02:00
namei.c	exfat: fix exfat_find_empty_entry() not returning error on failure	2024-12-17 20:21:59 +09:00
nls.c	move asm/unaligned.h to linux/unaligned.h	2024-10-02 17:23:23 -04:00
super.c	exfat: Implement sops->shutdown and ioctl	2024-09-18 07:40:56 +09:00