Ryusuke Konishi 4811f7af60 nilfs2: handle inconsistent state in nilfs_btnode_create_block() ...

Syzbot reported that a buffer state inconsistency was detected in
nilfs_btnode_create_block(), triggering a kernel bug.

It is not appropriate to treat this inconsistency as a bug; it can occur
if the argument block address (the buffer index of the newly created
block) is a virtual block number and has been reallocated due to
corruption of the bitmap used to manage its allocation state.

So, modify nilfs_btnode_create_block() and its callers to treat it as a
possible filesystem error, rather than triggering a kernel bug.

Link: https://lkml.kernel.org/r/20240725052007.4562-1-konishi.ryusuke@gmail.com
Fixes: a60be987d4 ("nilfs2: B-tree node cache")
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: syzbot+89cc4f2324ed37988b60@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=89cc4f2324ed37988b60
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

2024-07-26 14:33:10 -07:00

..

alloc.c

nilfs2: fix incorrect inode allocation from reserved inodes

2024-07-03 19:30:16 -07:00

alloc.h

nilfs2: fix incorrect inode allocation from reserved inodes

2024-07-03 19:30:16 -07:00

bmap.c

nilfs2: drop usage of page_index

2024-07-03 19:29:54 -07:00

bmap.h

nilfs2: remove filenames from file comments

2021-11-09 10:02:52 -08:00

btnode.c

nilfs2: handle inconsistent state in nilfs_btnode_create_block()

2024-07-26 14:33:10 -07:00

btnode.h

fs/nilfs2: Use the enum req_op and blk_opf_t types

2022-07-14 12:14:33 -06:00

btree.c

nilfs2: handle inconsistent state in nilfs_btnode_create_block()

2024-07-26 14:33:10 -07:00

btree.h

nilfs2: remove filenames from file comments

2021-11-09 10:02:52 -08:00

cpfile.c

nilfs2: use div64_ul() instead of do_div()

2024-03-12 13:09:23 -07:00

cpfile.h

nilfs2: remove nilfs_cpfile_{get,put}_checkpoint()

2024-02-22 15:38:53 -08:00

dat.c

nilfs2: fix incorrect inode allocation from reserved inodes

2024-07-03 19:30:16 -07:00

dat.h

nilfs2: remove filenames from file comments

2021-11-09 10:02:52 -08:00

dir.c

nilfs2: fix kernel bug on rename operation of broken directory

2024-07-03 22:40:38 -07:00

direct.c

nilfs2: fix failure to detect DAT corruption in btree and direct mappings

2024-03-14 09:17:29 -07:00

direct.h

nilfs2: remove filenames from file comments

2021-11-09 10:02:52 -08:00

export.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

file.c

nilfs2: fix hang in nilfs_lookup_dirty_data_buffers()

2024-02-07 21:20:36 -08:00

gcinode.c

nilfs2: add kernel-doc comments to nilfs_remove_all_gcinodes()

2024-04-25 21:07:08 -07:00

ifile.c

nilfs2: fix incorrect inode allocation from reserved inodes

2024-07-03 19:30:16 -07:00

ifile.h

nilfs2: localize highmem mapping for checkpoint reading within cpfile

2024-02-22 15:38:53 -08:00

inode.c

nilfs2: prevent kernel bug at submit_bh_wbc()

2024-03-14 09:17:30 -07:00

ioctl.c

nilfs2: fix out-of-range warning

2024-04-09 10:52:12 +02:00

Kconfig

fs: add CONFIG_BUFFER_HEAD

2023-08-02 09:13:09 -06:00

Makefile

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

mdt.c

nilfs2: convert metadata file common code to use kmap_local

2024-02-22 15:38:53 -08:00

mdt.h

nilfs2: fix lockdep warnings during disk space reclamation

2022-04-01 11:46:09 -07:00

namei.c

Merge tag 'pull-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2024-01-11 20:23:50 -08:00

nilfs.h

nilfs2: add missing check for inode numbers on directory entries

2024-07-03 19:30:16 -07:00

page.c

nilfs2: convert nilfs_copy_buffer() to use kmap_local

2024-02-22 15:38:53 -08:00

page.h

nilfs2: convert nilfs_page_bug() to nilfs_folio_bug()

2023-12-10 17:21:48 -08:00

recovery.c

nilfs2: make block erasure safe in nilfs_finish_roll_forward()

2024-05-19 14:36:21 -07:00

segbuf.c

nilfs2: convert segment buffer to use kmap_local

2024-02-22 15:38:53 -08:00

segbuf.h

nilfs2: remove filenames from file comments

2021-11-09 10:02:52 -08:00

segment.c

nilfs2: avoid undefined behavior in nilfs_cnt32_ge macro

2024-07-04 23:43:11 -07:00

segment.h

nilfs2: remove filenames from file comments

2021-11-09 10:02:52 -08:00

sufile.c

nilfs2: use div64_ul() instead of do_div()

2024-03-12 13:09:23 -07:00

sufile.h

nilfs2: remove filenames from file comments

2021-11-09 10:02:52 -08:00

super.c

nilfs2: convert to use the new mount API

2024-05-08 08:41:27 -07:00

sysfs.c

nilfs2: Constify struct kobj_type

2024-07-12 16:39:52 -07:00

sysfs.h

nilfs2: remove filenames from file comments

2021-11-09 10:02:52 -08:00

the_nilfs.c

nilfs2: fix inode number range checks

2024-07-03 19:30:15 -07:00

the_nilfs.h

nilfs2: fix inode number range checks

2024-07-03 19:30:15 -07:00