Gao Xiang 3a23787ca8 erofs: fix file-backed mounts over FUSE ... syzbot reported a null-ptr-deref in fuse_read_args_fill: fuse_read_folio+0xb0/0x100 fs/fuse/file.c:905 filemap_read_folio+0xc6/0x2a0 mm/filemap.c:2367 do_read_cache_folio+0x263/0x5c0 mm/filemap.c:3825 read_mapping_folio include/linux/pagemap.h:1011 [inline] erofs_bread+0x34d/0x7e0 fs/erofs/data.c:41 erofs_read_superblock fs/erofs/super.c:281 [inline] erofs_fc_fill_super+0x2b9/0x2500 fs/erofs/super.c:625 Unlike most filesystems, some network filesystems and FUSE need unavoidable valid `file` pointers for their read I/Os [1]. Anyway, those use cases need to be supported too. [1] https://docs.kernel.org/filesystems/vfs.html Reported-by: syzbot+0b1279812c46e48bb0c1@syzkaller.appspotmail.com Closes: https://lore.kernel.org/r/6727bbdf.050a0220.3c8d68.0a7e.GAE@google.com Fixes: fb17675026 ("erofs: add file-backed mount support") Tested-by: syzbot+0b1279812c46e48bb0c1@syzkaller.appspotmail.com Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com> Link: https://lore.kernel.org/r/20241114234905.1873723-1-hsiangkao@linux.alibaba.com		2024-11-18 18:50:13 +08:00
..
compress.h	erofs: avoid refcounting short-lived pages	2024-07-11 15:14:26 +08:00
data.c	erofs: fix file-backed mounts over FUSE	2024-11-18 18:50:13 +08:00
decompressor_deflate.c	erofs: tidy up stream decompressors	2024-07-09 19:04:41 +08:00
decompressor_lzma.c	erofs: convert comma to semicolon	2024-07-26 18:48:12 +08:00
decompressor_zstd.c	erofs: tidy up stream decompressors	2024-07-09 19:04:41 +08:00
decompressor.c	erofs: fix error handling in z_erofs_init_decompressor	2024-09-10 00:46:34 +08:00
dir.c	erofs: simplify readdir operation	2024-08-19 11:06:20 +08:00
erofs_fs.h	erofs: restrict pcluster size limitations	2024-09-12 23:00:09 +08:00
fileio.c	erofs: support compressed inodes for fileio	2024-09-10 15:27:09 +08:00
fscache.c	erofs: don't align offset for erofs_read_metabuf() (simple cases)	2024-05-18 01:47:26 +08:00
inode.c	erofs: reject inodes with negative i_size	2024-09-12 23:00:09 +08:00
internal.h	erofs: fix file-backed mounts over FUSE	2024-11-18 18:50:13 +08:00
Kconfig	erofs: mark experimental fscache backend deprecated	2024-09-10 15:27:11 +08:00
Makefile	erofs: support unencoded inodes for fileio	2024-09-10 15:26:36 +08:00
namei.c	erofs_buf: store address_space instead of inode	2024-04-25 00:57:14 -04:00
super.c	erofs: simplify definition of the log functions	2024-11-18 18:50:13 +08:00
sysfs.c	erofs: add sysfs node to drop internal caches	2024-11-18 18:50:13 +08:00
xattr.c	erofs_buf: store address_space instead of inode	2024-04-25 00:57:14 -04:00
xattr.h	erofs: move erofs_xattr_handlers and xattr_handler_map to .rodata	2023-10-09 16:24:17 +02:00
zdata.c	erofs: add sysfs node to drop internal caches	2024-11-18 18:50:13 +08:00
zmap.c	Changes since last update:	2024-10-14 11:12:09 -07:00
zutil.c	erofs: move erofs_workgroup operations into zdata.c	2024-11-18 18:50:12 +08:00