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ebe060369f
JFS has in jfs_incore.h:
/* _inline may overflow into _inline_ea when needed */
/* _inline_ea may overlay the last part of
* file._xtroot if maxentry = XTROOTINITSLOT
*/
union {
struct {
/* 128: inline symlink */
unchar _inline[128];
/* 128: inline extended attr */
unchar _inline_ea[128];
};
unchar _inline_all[256];
and currently the symlink code copies into _inline;
if this is larger than 128 bytes it triggers a fortify warning of the
form:
memcpy: detected field-spanning write (size 132) of single field
"ip->i_link" at fs/jfs/namei.c:950 (size 18446744073709551615)
when it's actually OK.
Copy it into _inline_all instead.
Reported-by: syzbot+5fc38b2ddbbca7f5c680@syzkaller.appspotmail.com
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
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|---|---|---|
| .. | ||
| acl.c | ||
| file.c | ||
| inode.c | ||
| ioctl.c | ||
| jfs_acl.h | ||
| jfs_btree.h | ||
| jfs_debug.c | ||
| jfs_debug.h | ||
| jfs_dinode.h | ||
| jfs_discard.c | ||
| jfs_discard.h | ||
| jfs_dmap.c | ||
| jfs_dmap.h | ||
| jfs_dtree.c | ||
| jfs_dtree.h | ||
| jfs_extent.c | ||
| jfs_extent.h | ||
| jfs_filsys.h | ||
| jfs_imap.c | ||
| jfs_imap.h | ||
| jfs_incore.h | ||
| jfs_inode.c | ||
| jfs_inode.h | ||
| jfs_lock.h | ||
| jfs_logmgr.c | ||
| jfs_logmgr.h | ||
| jfs_metapage.c | ||
| jfs_metapage.h | ||
| jfs_mount.c | ||
| jfs_superblock.h | ||
| jfs_txnmgr.c | ||
| jfs_txnmgr.h | ||
| jfs_types.h | ||
| jfs_umount.c | ||
| jfs_unicode.c | ||
| jfs_unicode.h | ||
| jfs_uniupr.c | ||
| jfs_xattr.h | ||
| jfs_xtree.c | ||
| jfs_xtree.h | ||
| Kconfig | ||
| Makefile | ||
| namei.c | ||
| resize.c | ||
| super.c | ||
| symlink.c | ||
| xattr.c | ||