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Date:      Wed, 22 May 2019 18:11:32 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 238035] Divide by zero in kern_fcntl_freebsd
Message-ID:  <bug-238035-227-Gt2pmuIKxq@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-238035-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-238035-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D238035

--- Comment #5 from Conrad Meyer <cem@freebsd.org> ---
Hm, devfs_statfs() does fill f_iosize, and it looks like we did that, so ho=
w is
this dividing by zero?

0xfffff8000377d000 devfs on /dev (devfs)
    mnt_flag =3D MULTILABEL, LOCAL
    mnt_kern_flag =3D EXTENDED_SHARED, LOOKUP_SHARED
    mnt_opt =3D
    mnt_stat =3D { version=3D538182936 type=3D113 flags=3D0x000000000000000=
0 bsize=3D512
iosize=3D512 blocks=3D2 bfree=3D0 bavail=3D0 files=3D0 ffree=3D0 syncwrites=
=3D0 asyncwrites=3D0
syncreads=3D0 asyncreads=3D0 namemax=3D255 owner=3D0 fsid=3D[1895890688, 11=
3] }

It's definitely "Fatal trap 18: integer divide fault while in kernel mode" =
and
that line, though.

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