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Juntong Deng d1de2a81a8 fs/jfs: Add check for negative db_l2nbperpage 
[ Upstream commit 525b861a008143048535011f3816d407940f4bfa ]

l2nbperpage is log2(number of blks per page), and the minimum legal
value should be 0, not negative.

In the case of l2nbperpage being negative, an error will occur
when subsequently used as shift exponent.

Syzbot reported this bug:

UBSAN: shift-out-of-bounds in fs/jfs/jfs_dmap.c:799:12
shift exponent -16777216 is negative

Reported-by: syzbot+debee9ab7ae2b34b0307@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=debee9ab7ae2b34b0307
Signed-off-by: Juntong Deng <juntong.deng@outlook.com>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-18 11:43:13 +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 fs/jfs: Add check for negative db_l2nbperpage 2024-11-18 11:43:13 +01:00
jfs_dmap.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jfs_dtree.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
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 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
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 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
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