udf: Verify partition map count
[ Upstream commit 1a11201668e8635602577dcf06f2e96c591d8819 ] Verify that number of partition maps isn't insanely high which can lead to large allocation in udf_sb_alloc_partition_maps(). All partition maps have to fit in the LVD which is in a single block. Reported-by:<syzbot+478f2c1a6f0f447a46bb@syzkaller.appspotmail.com> Signed-off-by:
Jan Kara <jack@suse.cz> Signed-off-by:
Sasha Levin <sashal@kernel.org>
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