Commit a0bd30e4 authored by Kent Overstreet's avatar Kent Overstreet
Browse files

bcachefs: Fix shift greater than integer size 



Reported-by: default avatar <syzbot+e5292b50f1957164a4b6@syzkaller.appspotmail.com>
Signed-off-by: default avatarKent Overstreet <kent.overstreet@linux.dev>
parent 600b8be5

fs/bcachefs/bkey.c

+3 −2
Original line number Diff line number Diff line
@@ -660,8 +660,9 @@ int bch2_bkey_format_invalid(struct bch_fs *c, 
		    bch2_bkey_format_field_overflows(f, i)) {

			unsigned unpacked_bits = bch2_bkey_format_current.bits_per_field[i];

			u64 unpacked_max = ~((~0ULL << 1) << (unpacked_bits - 1));

			u64 packed_max = f->bits_per_field[i]

				? ~((~0ULL << 1) << (f->bits_per_field[i] - 1))

			unsigned packed_bits = min(64, f->bits_per_field[i]);

			u64 packed_max = packed_bits

				? ~((~0ULL << 1) << (packed_bits - 1))

				: 0;



			prt_printf(err, "field %u too large: %llu + %llu > %llu",