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linux/fs/jfs
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Shaurya Rane a2aa97cde9 jfs: fix uninitialized waitqueue in transaction manager 
[ Upstream commit 300b072df7 ]

The transaction manager initialization in txInit() was not properly
initializing TxBlock[0].waitor waitqueue, causing a crash when
txEnd(0) is called on read-only filesystems.

When a filesystem is mounted read-only, txBegin() returns tid=0 to
indicate no transaction. However, txEnd(0) still gets called and
tries to access TxBlock[0].waitor via tid_to_tblock(0), but this
waitqueue was never initialized because the initialization loop
started at index 1 instead of 0.

This causes a 'non-static key' lockdep warning and system crash:
  INFO: trying to register non-static key in txEnd

Fix by ensuring all transaction blocks including TxBlock[0] have
their waitqueues properly initialized during txInit().

Reported-by: syzbot+c4f3462d8b2ad7977bea@syzkaller.appspotmail.com

Signed-off-by: Shaurya Rane <ssrane_b23@ee.vjti.ac.in>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-12-07 06:09:22 +09:00
..
acl.c vfs: add rcu argument to ->get_acl() callback 2021-08-18 22:08:24 +02:00
file.c jfs: Regular file corruption check 2025-08-28 16:24:23 +02:00
inode.c jfs: Verify inode mode when loading from disk 2025-12-07 06:09:22 +09:00
ioctl.c jfs: convert to fileattr 2021-04-12 15:04:29 +02:00
jfs_acl.h vfs: add rcu argument to ->get_acl() callback 2021-08-18 22:08:24 +02:00
jfs_btree.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
jfs_debug.c proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
jfs_debug.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
jfs_dinode.h jfs: define xtree root and page independently 2025-05-02 07:44:39 +02:00
jfs_discard.c jfs: Fix null-ptr-deref in jfs_ioc_trim 2025-06-27 11:05:30 +01:00
jfs_discard.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
jfs_dmap.c jfs: upper bound check of tree index in dbAllocAG 2025-08-28 16:24:23 +02:00
jfs_dmap.h jfs: Fix array index bounds check in dbAdjTree 2020-11-13 16:03:07 -06:00
jfs_dtree.c jfs: fix null ptr deref in dtInsertEntry 2025-07-17 18:30:48 +02:00
jfs_dtree.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
jfs_extent.c jfs: validate max amount of blocks before allocation. 2023-09-19 12:22:43 +02:00
jfs_extent.h jfs: delete duplicated words + other fixes 2020-11-13 13:36:00 -06:00
jfs_filsys.h jfs: jfs_dmap: Validate db_l2nbperpage while mounting 2023-07-23 13:47:49 +02:00
jfs_imap.c jfs: reject on-disk inodes of an unsupported type 2025-08-28 16:24:05 +02:00
jfs_imap.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
jfs_incore.h jfs: define xtree root and page independently 2025-05-02 07:44:39 +02:00
jfs_inode.c inode: make init and permission helpers idmapped mount aware 2021-01-24 14:27:16 +01:00
jfs_inode.h jfs: convert to fileattr 2021-04-12 15:04:29 +02:00
jfs_lock.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
jfs_logmgr.c fs/jfs: Fix missing error code in lmLogInit() 2021-06-01 10:29:12 -05:00
jfs_logmgr.h jfs: delete duplicated words + other fixes 2020-11-13 13:36:00 -06:00
jfs_metapage.c fs: Introduce i_blocks_per_page 2020-09-21 08:59:26 -07:00
jfs_metapage.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
jfs_mount.c jfs: fix uaf in jfs_evict_inode 2024-02-23 08:54:39 +01:00
jfs_superblock.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
jfs_txnmgr.c jfs: fix uninitialized waitqueue in transaction manager 2025-12-07 06:09:22 +09:00
jfs_txnmgr.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
jfs_types.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
jfs_umount.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
jfs_unicode.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
jfs_unicode.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
jfs_uniupr.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
jfs_xattr.h jfs: Replace zero-length array with flexible-array member 2020-03-09 15:18:51 -05:00
jfs_xtree.c jfs: define xtree root and page independently 2025-05-02 07:44:39 +02:00
jfs_xtree.h jfs: define xtree root and page independently 2025-05-02 07:44:39 +02:00
Kconfig docs: fix a couple of new broken references 2019-07-31 14:12:26 -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
namei.c FS: JFS: Fix null-ptr-deref Read in txBegin 2023-07-27 08:46:58 +02:00
resize.c block: move struct block_device to blk_types.h 2020-06-24 09:16:02 -06:00
super.c jfs: Avoid field-overflowing memcpy() 2021-06-23 09:21:52 -05:00
symlink.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
xattr.c jfs: fix slab-out-of-bounds read in ea_get() 2025-04-10 14:32:06 +02:00