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bcachefs: Fix shift greater than integer size

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Reported-by: syzbot+e5292b50f1957164a4b6@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-06-28 19:41:00 -04:00
parent 600b8be5e7
commit a0bd30e4ea
1 changed files with 3 additions and 2 deletions
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5
fs/bcachefs/bkey.c
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@ -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",