Edward Adam Davis 3537f92cd2 jfs: fix array-index-out-of-bounds in diNewExt ... [ Upstream commit 49f9637aaf ] [Syz report] UBSAN: array-index-out-of-bounds in fs/jfs/jfs_imap.c:2360:2 index -878706688 is out of range for type 'struct iagctl[128]' CPU: 1 PID: 5065 Comm: syz-executor282 Not tainted 6.7.0-rc4-syzkaller-00009-gbee0e7762ad2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 ubsan_epilogue lib/ubsan.c:217 [inline] __ubsan_handle_out_of_bounds+0x11c/0x150 lib/ubsan.c:348 diNewExt+0x3cf3/0x4000 fs/jfs/jfs_imap.c:2360 diAllocExt fs/jfs/jfs_imap.c:1949 [inline] diAllocAG+0xbe8/0x1e50 fs/jfs/jfs_imap.c:1666 diAlloc+0x1d3/0x1760 fs/jfs/jfs_imap.c:1587 ialloc+0x8f/0x900 fs/jfs/jfs_inode.c:56 jfs_mkdir+0x1c5/0xb90 fs/jfs/namei.c:225 vfs_mkdir+0x2f1/0x4b0 fs/namei.c:4106 do_mkdirat+0x264/0x3a0 fs/namei.c:4129 __do_sys_mkdir fs/namei.c:4149 [inline] __se_sys_mkdir fs/namei.c:4147 [inline] __x64_sys_mkdir+0x6e/0x80 fs/namei.c:4147 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x45/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7fcb7e6a0b57 Code: ff ff 77 07 31 c0 c3 0f 1f 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd83023038 EFLAGS: 00000286 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007fcb7e6a0b57 RDX: 00000000000a1020 RSI: 00000000000001ff RDI: 0000000020000140 RBP: 0000000020000140 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000286 R12: 00007ffd830230d0 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [Analysis] When the agstart is too large, it can cause agno overflow. [Fix] After obtaining agno, if the value is invalid, exit the subsequent process. Reported-and-tested-by: syzbot+553d90297e6d2f50dbc7@syzkaller.appspotmail.com Signed-off-by: Edward Adam Davis <eadavis@qq.com> Modified the test from agno > MAXAG to agno >= MAXAG based on linux-next report by kernel test robot (Dan Carpenter). Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-02-05 20:12:48 +00:00
..
acl.c	vfs: add rcu argument to ->get_acl() callback	2021-08-18 22:08:24 +02:00
file.c	attr: port attribute changes to new types	2022-06-26 18:18:56 +02:00
inode.c	jfs: stop using the nobh helper	2022-08-02 12:34:04 -04:00
ioctl.c	block: add a bdev_discard_granularity helper	2022-04-17 19:49:59 -06:00
jfs_acl.h	vfs: add rcu argument to ->get_acl() callback	2021-08-18 22:08:24 +02:00
jfs_btree.h
jfs_debug.c
jfs_debug.h
jfs_dinode.h	jfs: Avoid field-overflowing memcpy()	2021-06-23 09:21:52 -05:00
jfs_discard.c
jfs_discard.h
jfs_dmap.c	jfs: fix array-index-out-of-bounds in dbAdjTree	2024-02-05 20:12:48 +00:00
jfs_dmap.h	jfs: Fix array index bounds check in dbAdjTree	2020-11-13 16:03:07 -06:00
jfs_dtree.c	jfs: fix slab-out-of-bounds Read in dtSearch	2024-02-05 20:12:48 +00:00
jfs_dtree.h
jfs_extent.c	jfs: validate max amount of blocks before allocation.	2023-09-13 09:42:49 +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 13:49:34 +02:00
jfs_imap.c	jfs: fix array-index-out-of-bounds in diNewExt	2024-02-05 20:12:48 +00:00
jfs_imap.h
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
jfs_logmgr.c	fs/jfs: Remove dead code	2022-04-25 14:00:33 -05:00
jfs_logmgr.h	jfs: delete duplicated words + other fixes	2020-11-13 13:36:00 -06:00
jfs_metapage.c	jfs: Remove check for PageUptodate	2022-06-29 08:51:07 -04:00
jfs_metapage.h
jfs_mount.c	jfs: fix uaf in jfs_evict_inode	2024-02-05 20:12:48 +00:00
jfs_superblock.h
jfs_txnmgr.c	FS: JFS: Check for read-only mounted filesystem in txBegin	2023-07-27 08:50:33 +02:00
jfs_txnmgr.h
jfs_types.h
jfs_umount.c
jfs_unicode.c
jfs_unicode.h
jfs_uniupr.c
jfs_xattr.h
jfs_xtree.c	fs/jfs: Remove dead code	2022-04-25 14:00:33 -05:00
jfs_xtree.h	fs/jfs: Remove dead code	2022-04-25 14:00:33 -05:00
Kconfig
Makefile	fs/jfs: Remove dead code	2022-04-25 14:00:33 -05:00
namei.c	FS: JFS: Fix null-ptr-deref Read in txBegin	2023-07-27 08:50:33 +02:00
resize.c	jfs: use sb_bdev_nr_blocks	2021-10-18 14:43:23 -06:00
super.c	block: remove QUEUE_FLAG_DISCARD	2022-04-17 19:49:59 -06:00
symlink.c
xattr.c	acl: handle idmapped mounts	2021-01-24 14:27:17 +01:00