[Bug 263971] ffs: malicious superblock can cause buffer overflow during tasting: panic: vm_fault_lookup: fault on nofault entry, addr: 0xffffffc07cb67000

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From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 17 May 2022 07:05:14 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=263971

--- Comment #4 from Kirk McKusick <mckusick@FreeBSD.org> ---
(In reply to Robert Morris from comment #3)
I have tried to further restrict the values that I accept for fs_cssize,
fs_ncg, and fs_contigsumsize. And also put a limit on the size of the
filesystem that can be mounted based on kernel memory limits.

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