Theodore Ts'o eb3257cba6 ext4: add more paranoia checking in ext4_expand_extra_isize handling ...

commit 4ea99936a1 upstream.

It's possible to specify a non-zero s_want_extra_isize via debugging
option, and this can cause bad things(tm) to happen when using a file
system with an inode size of 128 bytes.

Add better checking when the file system is mounted, as well as when
we are actually doing the trying to do the inode expansion.

Link: https://lore.kernel.org/r/20191110121510.GH23325@mit.edu
Reported-by: syzbot+f8d6f8386ceacdbfff57@syzkaller.appspotmail.com
Reported-by: syzbot+33d7ea72e47de3bdf4e1@syzkaller.appspotmail.com
Reported-by: syzbot+44b6763edfc17144296f@syzkaller.appspotmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2019-12-05 15:38:19 +01:00

..

acl.c

…

acl.h

…

balloc.c

ext4: check for allocation block validity with block group locked

2018-08-03 07:50:43 +02:00

bitmap.c

…

block_validity.c

…

dir.c

ext4: allow directory holes

2019-07-31 07:28:47 +02:00

ext4_extents.h

ext4: verify the depth of extent tree in ext4_find_extent()

2018-07-11 16:29:17 +02:00

ext4_jbd2.c

…

ext4_jbd2.h

ext4: use jbd2_inode dirty range scoping

2019-07-31 07:28:47 +02:00

ext4.h

ext4: add mask of ext4 flags to swap

2019-03-23 14:35:22 +01:00

extents_status.c

…

extents_status.h

…

extents.c

ext4: fix warning inside ext4_convert_unwritten_extents_endio

2019-10-05 12:48:11 +02:00

file.c

ext4: enforce the immutable flag on open files

2019-07-31 07:28:47 +02:00

fsmap.c

…

fsmap.h

…

fsync.c

Revert "ext4: use ext4_write_inode() when fsyncing w/o a journal"

2019-02-15 08:09:13 +01:00

hash.c

…

ialloc.c

ext4: fix check to prevent initializing reserved inodes

2018-08-03 07:50:43 +02:00

indirect.c

ext4: cleanup bh release code in ext4_ind_remove_space()

2019-04-05 22:31:24 +02:00

inline.c

ext4: fix a potential fiemap/page fault deadlock w/ inline_data

2019-01-16 22:07:12 +01:00

inode.c

ext4: add more paranoia checking in ext4_expand_extra_isize handling

2019-12-05 15:38:19 +01:00

ioctl.c

ext4: don't allow any modifications to an immutable file

2019-07-31 07:28:47 +02:00

Kconfig

…

Makefile

…

mballoc.c

ext4: make sanity check in mballoc more strict

2019-05-21 18:50:18 +02:00

mballoc.h

…

migrate.c

ext4: add ext4_sb_bread() to disambiguate ENOMEM cases

2019-01-09 17:14:49 +01:00

mmp.c

ext4: don't mark mmp buffer head dirty

2018-09-29 03:06:06 -07:00

move_extent.c

ext4: use jbd2_inode dirty range scoping

2019-07-31 07:28:47 +02:00

namei.c

ext4: fix build error when DX_DEBUG is defined

2019-11-24 08:22:58 +01:00

page-io.c

…

readpage.c

…

resize.c

ext4: avoid drop reference to iloc.bh twice

2019-05-21 18:50:18 +02:00

super.c

ext4: add more paranoia checking in ext4_expand_extra_isize handling

2019-12-05 15:38:19 +01:00

symlink.c

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sysfs.c

ext4: sysfs: print ext4_super_block fields as little-endian

2018-09-05 09:26:36 +02:00

truncate.h

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xattr_security.c

…

xattr_trusted.c

…

xattr_user.c

…

xattr.c

ext4: ignore e_value_offs for xattrs with value-in-ea-inode

2019-05-21 18:50:18 +02:00

xattr.h

…