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linux-stable/fs/jfs
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Haimin Zhang d925b7e78b jfs: prevent NULL deref in diFree 
[ Upstream commit a530462910 ]

Add validation check for JFS_IP(ipimap)->i_imap to prevent a NULL deref
in diFree since diFree uses it without do any validations.
When function jfs_mount calls diMount to initialize fileset inode
allocation map, it can fail and JFS_IP(ipimap)->i_imap won't be
initialized. Then it calls diFreeSpecial to close fileset inode allocation
map inode and it will flow into jfs_evict_inode. Function jfs_evict_inode
just validates JFS_SBI(inode->i_sb)->ipimap, then calls diFree. diFree use
JFS_IP(ipimap)->i_imap directly, then it will cause a NULL deref.

Reported-by: TCS Robot <tcs_robot@tencent.com>
Signed-off-by: Haimin Zhang <tcs_kernel@tencent.com>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-04-13 20:59:13 +02:00
..
acl.c vfs: add rcu argument to ->get_acl() callback 2021-08-18 22:08:24 +02:00
file.c jfs: convert to fileattr 2021-04-12 15:04:29 +02:00
inode.c jfs: prevent NULL deref in diFree 2022-04-13 20:59:13 +02:00
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: Avoid field-overflowing memcpy() 2021-06-23 09:21:52 -05:00
jfs_discard.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
jfs_discard.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
jfs_dmap.c jfs: fix divide error in dbNextAG 2022-04-08 14:23:51 +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: Replace zero-length array with flexible-array member 2020-03-09 15:18:51 -05:00
jfs_dtree.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
jfs_extent.c jfs: delete duplicated words + other fixes 2020-11-13 13:36:00 -06:00
jfs_extent.h jfs: delete duplicated words + other fixes 2020-11-13 13:36:00 -06:00
jfs_filsys.h JFS: more checks for invalid superblock 2020-12-18 15:23:33 -06:00
jfs_imap.c jfs: Avoid field-overflowing memcpy() 2021-06-23 09:21:52 -05:00
jfs_imap.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
jfs_incore.h jfs: Avoid field-overflowing memcpy() 2021-06-23 09:21:52 -05:00
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 memleak in jfs_mount 2021-11-18 19:16:48 +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: Remove trailing semicolon in macros 2021-05-21 10:36:22 -05:00
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: delete duplicated words + other fixes 2020-11-13 13:36:00 -06:00
jfs_xtree.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
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 jfs: convert to fileattr 2021-04-12 15:04:29 +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 acl: handle idmapped mounts 2021-01-24 14:27:17 +01:00