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Re: Proposal: validate FFS root inode during the mount.

On 20.11.2019 16:11, Mouse wrote:
>> During the fuzzing of FFS filesystem, we had a couple of issues
>> caused by corrupted inode fields.  [...]
>> To make sure that corrupted mount won't cause harm to the user, I
>> want to add function to validate root inode on mount step (after
>> superblock validation)
> Don't you have more or less the same issue with every other non-free
> inode in the filesystem?  The only thing I can see that's special about
> the root inode in this regard is that it is the only inode that is used
> immediately upon mount.

From a high level point of view, we want to reject early corrupted FS on
a mount. Today we panic the kernel needlessly.

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