futex: Fix a race condition between REQUEUE_PI and task death
ext4: fix overflow when updating superblock backups after resize
ext4: fix oops when loading block bitmap failed

When we fail to load block bitmap in __ext4_new_inode() we will
dereference NULL pointer in ext4_journal_get_write_access(). So check
for error from ext4_read_block_bitmap().

Coverity-id: 989065
Cc: stable@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
ext4: bail out from make_indexed_dir() on first error
tracing/syscalls: Ignore numbers outside NR_syscalls' range