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bcachefs: bch2_ioctl_disk_resize_journal(): check for integer truncation

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Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2023-09-19 22:26:18 -04:00
parent 75e0c4789b
commit 4b33a1916a
1 changed files with 3 additions and 0 deletions
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3
fs/bcachefs/chardev.c
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@ -627,6 +627,9 @@ static long bch2_ioctl_disk_resize_journal(struct bch_fs *c,
arg.pad)
return -EINVAL;
if (arg.nbuckets > U32_MAX)
return -EINVAL;
ca = bch2_device_lookup(c, arg.dev, arg.flags);
if (IS_ERR(ca))
return PTR_ERR(ca);