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linux/fs/ext2
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Wei Gao 3beaa57870 ext2: Handle fiemap on empty files to prevent EINVAL 
[ Upstream commit a099b09a33 ]

Previously, ext2_fiemap would unconditionally apply "len = min_t(u64, len,
i_size_read(inode));", When inode->i_size was 0 (for an empty file), this
would reduce the requested len to 0. Passing len = 0 to iomap_fiemap could
then result in an -EINVAL error, even for valid queries on empty files.

Link: https://github.com/linux-test-project/ltp/issues/1246
Signed-off-by: Wei Gao <wegao@suse.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20250613152402.3432135-1-wegao@suse.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-08-28 16:25:51 +02:00
..
acl.c vfs: add rcu argument to ->get_acl() callback 2021-08-18 22:08:24 +02:00
acl.h vfs: add rcu argument to ->get_acl() callback 2021-08-18 22:08:24 +02:00
balloc.c ext2: Verify bitmap and itable block numbers before using them 2024-08-03 08:49:32 +02:00
dir.c ext2: unbugger ext2_empty_dir() 2023-01-07 11:11:40 +01:00
ext2.h ext2: Drop fragment support 2023-08-11 12:08:24 +02:00
file.c ext2: Convert to using invalidate_lock 2021-07-13 14:29:00 +02:00
ialloc.c treewide: use prandom_u32_max() when possible, part 2 2022-10-11 17:42:58 -06:00
inode.c ext2: Handle fiemap on empty files to prevent EINVAL 2025-08-28 16:25:51 +02:00
ioctl.c ext2: convert to fileattr 2021-04-12 15:04:29 +02:00
Kconfig ext2: use iomap_fiemap to implement ->fiemap 2021-07-27 11:00:32 +02:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
namei.c vfs: open inside ->tmpfile() 2022-09-24 07:00:00 +02:00
super.c ext2: Drop fragment support 2023-08-11 12:08:24 +02:00
symlink.c ext2: code cleanup by removing ifdef macro surrounding 2020-05-22 15:11:00 +02:00
xattr.c ext2: fix datatype of block number in ext2_xattr_set2() 2023-09-23 11:11:05 +02:00
xattr.h ext2: code cleanup by removing ifdef macro surrounding 2020-05-22 15:11:00 +02:00
xattr_security.c acl: handle idmapped mounts 2021-01-24 14:27:17 +01:00
xattr_trusted.c acl: handle idmapped mounts 2021-01-24 14:27:17 +01:00
xattr_user.c acl: handle idmapped mounts 2021-01-24 14:27:17 +01:00