[Bug 253158] Panic: snapacct_ufs2: bad block - Non-suJ mksnap_ffs(8) crash

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=253158

--- Comment #49 from commit-hook at FreeBSD.org ---
A commit in branch main references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=c61fae1475f1864dc4bba667b642f279afd44855

commit c61fae1475f1864dc4bba667b642f279afd44855
Author:     Konstantin Belousov <kib at FreeBSD.org>
AuthorDate: 2021-02-15 03:34:06 +0000
Commit:     Konstantin Belousov <kib at FreeBSD.org>
CommitDate: 2021-02-16 05:09:37 +0000

    pgcache read: protect against reads past end of the vm object size

    If uio_offset is past end of the object size, calculated resid is negative.
    Delegate handling this case to the locked read, as any other non-trivial
    situation.

    PR:     253158
    Reported by:    Harald Schmalzbauer <bugzilla.freebsd at omnilan.de>
    Tested by:      cy
    Sponsored by:   The FreeBSD Foundation
    MFC after:      1 week

 sys/kern/vfs_vnops.c | 4 ++++
 1 file changed, 4 insertions(+)

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