Helen Koike 432839a5bd ext4: reject mount if bigalloc with s_first_data_block != 0 ...

commit 3822743dc20386d9897e999dbb990befa3a5b3f8 upstream.

bigalloc with s_first_data_block != 0 is not supported, reject mounting
it.

Signed-off-by: Helen Koike <koike@igalia.com>
Suggested-by: Theodore Ts'o <tytso@mit.edu>
Reported-by: syzbot+b73703b873a33d8eb8f6@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=b73703b873a33d8eb8f6
Link: https://patch.msgid.link/20260317142325.135074-1-koike@igalia.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ulrich Hecht <uli@kernel.org>

2026-05-07 10:55:21 +02:00

..

acl.c

…

acl.h

…

balloc.c

ext4: reorder capability check last

2025-07-17 10:07:56 +02:00

bitmap.c

…

block_validity.c

…

dir.c

ext4: fix OOB read when checking dotdot dir

2025-06-11 10:19:26 +02:00

ext4_extents.h

…

ext4_jbd2.c

…

ext4_jbd2.h

…

ext4.h

…

extents_status.c

…

extents_status.h

…

extents.c

ext4: drop extent cache when splitting extent fails

2026-05-07 10:55:17 +02:00

file.c

…

fsmap.c

ext4: correctly handle queries for metadata mappings

2025-11-17 10:36:41 +01:00

fsmap.h

…

fsync.c

…

hash.c

…

ialloc.c

ext4: make recently_deleted() properly work with lazy itable initialization

2026-05-07 10:55:21 +02:00

indirect.c

…

inline.c

ext4: add i_data_sem protection in ext4_destroy_inline_data_nolock()

2026-01-26 16:51:54 +08:00

inode.c

ext4: fix out-of-bound read in ext4_xattr_inode_dec_ref_all()

2026-01-29 12:09:37 +08:00

ioctl.c

…

Kconfig

…

Makefile

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mballoc.c

ext4: avoid allocate block from corrupted group in ext4_mb_find_by_goal()

2026-05-07 10:55:21 +02:00

mballoc.h

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migrate.c

…

mmp.c

…

move_extent.c

ext4: correct the checking of quota files before moving extents

2026-01-26 16:51:55 +08:00

namei.c

ext4: fix off-by-one error in do_split

2025-06-04 11:49:02 +02:00

page-io.c

…

readpage.c

…

resize.c

…

super.c

ext4: reject mount if bigalloc with s_first_data_block != 0

2026-05-07 10:55:21 +02:00

symlink.c

…

sysfs.c

…

truncate.h

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xattr_security.c

…

xattr_trusted.c

…

xattr_user.c

…

xattr.c

ext4: fix out-of-bound read in ext4_xattr_inode_dec_ref_all()

2026-01-29 12:09:37 +08:00

xattr.h

ext4: fix out-of-bound read in ext4_xattr_inode_dec_ref_all()

2026-01-29 12:09:37 +08:00