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Edward Adam Davis 194fce2ea6 jfs: fix array-index-out-of-bounds in diNewExt 
[ Upstream commit 49f9637aafa6e63ba686c13cb8549bf5e6920402 ]

[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>
2024-11-18 12:13:10 +01:00
..
acl.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
file.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
inode.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ioctl.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_acl.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_btree.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_debug.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_debug.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_dinode.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_discard.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_discard.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_dmap.c jfs: fix array-index-out-of-bounds in dbAdjTree 2024-11-18 12:13:09 +01:00
jfs_dmap.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_dtree.c jfs: fix slab-out-of-bounds Read in dtSearch 2024-11-18 12:13:09 +01:00
jfs_dtree.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_extent.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_extent.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_filsys.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_imap.c jfs: fix array-index-out-of-bounds in diNewExt 2024-11-18 12:13:10 +01:00
jfs_imap.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_incore.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_inode.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_inode.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_lock.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_logmgr.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_logmgr.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_metapage.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_metapage.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_mount.c jfs: fix uaf in jfs_evict_inode 2024-11-18 12:13:09 +01:00
jfs_superblock.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_txnmgr.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_txnmgr.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_types.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_umount.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_unicode.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_unicode.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_uniupr.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_xattr.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_xtree.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_xtree.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Kconfig Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Makefile Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
namei.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
resize.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
super.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
symlink.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
xattr.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00