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Re: kern/55628: inserting blank disk into USB Floppy drive panics NetBSD 9.0/amd64
The following reply was made to PR kern/55628; it has been noted by GNATS.
From: =?UTF-8?Q?J=C3=B6rn_Clausen?= <joernc%googlemail.com@localhost>
To: Martin Husemann <martin%duskware.de@localhost>
Cc: gnats-bugs%netbsd.org@localhost
Subject: Re: kern/55628: inserting blank disk into USB Floppy drive panics
NetBSD 9.0/amd64
Date: Sun, 30 Aug 2020 21:21:11 +0200
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Okay, the machine does not crash immediately! I can insert a floppy and get
$ disklabel sd1
# /dev/rsd1:
type: ATAPI
disk: FD-05PUW
label: default label
flags: removable
bytes/sector: 512
sectors/track: 0
tracks/cylinder: 0
sectors/cylinder: 0
cylinders: 0
total sectors: 536870911
rpm: 0
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0 # microseconds
track-to-track seek: 0 # microseconds
drivedata: 0
4 partitions:
# size offset fstype [fsize bsize cpg/sgs]
a: 536870911 0 4.2BSD 0 0 0
d: 536870911 0 unused 0 0
Is it okay that sectors/track, tracks/cylinder and so on are 0 because they
make no sense on a floppy?
Trying to format the disk (newfs or newfs_msdos on /dev/sd1a or /dev/rsd1a)
causes newfs* to core. Trying to copy the NetBSD install floppy with
$ dd if=3Dboot1.fs of=3D/dev/rsd1d
results in the same crash as before:
[ 273.925000] fatal integer divide fault in supervisor mode
[ 273.925000] trap type 8 code 0 rip 0xffffffff809fb829 cs 0x8 rflags
0x10246 cr2 0x7e4a38da5000 ilevel 0 rsp 0xffffbf0063c16c90
[ 273.925000] curlwp 0xffff9e11ac420160 pid 2119.1 lowest kstack
0xffffbf0063c142c0
[ 273.925000] panic: trap
[ 273.925000] cpu0: Begin traceback...
[ 273.925000] vpanic() at netbsd:vpanic+0x160
[ 273.925000] snprintf() at netbsd:snprintf
[ 273.925000] startlwp() at netbsd:startlwp
[ 273.925000] alltraps() at netbsd:alltraps+0xbb
[ 273.935009] dk_strategy1() at netbsd:dk_strategy1+0x17
[ 273.935009] dk_strategy() at netbsd:dk_strategy+0x12
[ 273.935009] physio() at netbsd:physio+0x2c8
[ 273.935009] spec_write() at netbsd:spec_write+0x58
[ 273.935009] VOP_WRITE() at netbsd:VOP_WRITE+0x50
[ 273.945016] vn_write() at netbsd:vn_write+0xfb
[ 273.945016] dofilewrite() at netbsd:dofilewrite+0x96
[ 273.945016] sys_write() at netbsd:sys_write+0x49
[ 273.945016] syscall() at netbsd:syscall+0x157
On Sun, Aug 30, 2020 at 9:01 PM Martin Husemann <martin%duskware.de@localhost> wrote:
> On Sun, Aug 30, 2020 at 08:58:22PM +0200, J=C3=B6rn Clausen wrote:
> > Where would I find this kernel? Temporarily replacing the kernel is no
> > problem, but updating the complete system is not an option for me.
>
> http://nycdn.netbsd.org/pub/NetBSD-daily/netbsd-9/latest/
>
> I suspect this will make it work and you can use that kernel with your
> 9.0 userland w/o problems.
>
> We usually are quite carefull with changes on release branches, so a
> userland
> update is quite low risc too (but I can understand avoiding it if
> everything
> just works).
>
> Martin
>
--=20
Joern Clausen
https://www.oe-files.de/photography/
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<div dir=3D"ltr"><div>Okay, the machine does not crash immediately! I can i=
nsert a floppy and get</div><div><br></div><div>$ disklabel sd1<br># /dev/r=
sd1:<br>type: ATAPI<br>disk: FD-05PUW<br>label: default label<br>flags: rem=
ovable<br>bytes/sector: 512<br>sectors/track: 0<br>tracks/cylinder: 0<br>se=
ctors/cylinder: 0<br>cylinders: 0<br>total sectors: 536870911<br>rpm: 0<br>=
interleave: 1<br>trackskew: 0<br>cylinderskew: 0<br>headswitch: 0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 # microseconds<br>track-to-track seek: 0 =C2=A0=
# microseconds<br>drivedata: 0 <br><br>4 partitions:<br># =C2=A0 =C2=A0 =C2=
=A0 =C2=A0size =C2=A0 =C2=A0offset =C2=A0 =C2=A0 fstype [fsize bsize cpg/sg=
s]<br>=C2=A0a: 536870911 =C2=A0 =C2=A0 =C2=A0 =C2=A0 0 =C2=A0 =C2=A0 4.2BSD=
=C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A0 0 =C2=A0 =C2=A0 0 <br>=C2=A0d: 5368709=
11 =C2=A0 =C2=A0 =C2=A0 =C2=A0 0 =C2=A0 =C2=A0 unused =C2=A0 =C2=A0 =C2=A00=
=C2=A0 =C2=A0 0 =C2=A0 =C2=A0 =C2=A0 <br></div><div><br></div><div>Is it o=
kay that sectors/track, tracks/cylinder and so on are 0 because they make n=
o sense on a floppy?<br></div><div><br></div><div>Trying to format the disk=
(newfs or newfs_msdos on /dev/sd1a or /dev/rsd1a) causes newfs* to core. T=
rying to copy the NetBSD install floppy with</div><div><br></div><div>$ dd =
if=3Dboot1.fs of=3D/dev/rsd1d</div><div><br></div><div>results in the same =
crash as before:</div><div><br></div><div>[ =C2=A0 273.925000] fatal intege=
r divide fault in supervisor mode<br>[ =C2=A0 273.925000] trap type 8 code =
0 rip 0xffffffff809fb829 cs 0x8 rflags 0x10246 cr2 0x7e4a38da5000 ilevel 0 =
rsp 0xffffbf0063c16c90<br>[ =C2=A0 273.925000] curlwp 0xffff9e11ac420160 pi=
d 2119.1 lowest kstack 0xffffbf0063c142c0<br>[ =C2=A0 273.925000] panic: tr=
ap<br>[ =C2=A0 273.925000] cpu0: Begin traceback...<br>[ =C2=A0 273.925000]=
vpanic() at netbsd:vpanic+0x160<br>[ =C2=A0 273.925000] snprintf() at netb=
sd:snprintf<br>[ =C2=A0 273.925000] startlwp() at netbsd:startlwp<br>[ =C2=
=A0 273.925000] alltraps() at netbsd:alltraps+0xbb<br>[ =C2=A0 273.935009] =
dk_strategy1() at netbsd:dk_strategy1+0x17<br>[ =C2=A0 273.935009] dk_strat=
egy() at netbsd:dk_strategy+0x12<br>[ =C2=A0 273.935009] physio() at netbsd=
:physio+0x2c8<br>[ =C2=A0 273.935009] spec_write() at netbsd:spec_write+0x5=
8<br>[ =C2=A0 273.935009] VOP_WRITE() at netbsd:VOP_WRITE+0x50<br>[ =C2=A0 =
273.945016] vn_write() at netbsd:vn_write+0xfb<br>[ =C2=A0 273.945016] dofi=
lewrite() at netbsd:dofilewrite+0x96<br>[ =C2=A0 273.945016] sys_write() at=
netbsd:sys_write+0x49<br>[ =C2=A0 273.945016] syscall() at netbsd:syscall+=
0x157<br></div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=
=3D"gmail_attr">On Sun, Aug 30, 2020 at 9:01 PM Martin Husemann <<a href=
=3D"mailto:martin%duskware.de@localhost";>martin%duskware.de@localhost</a>> wrote:<br></div><=
blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-l=
eft:1px solid rgb(204,204,204);padding-left:1ex">On Sun, Aug 30, 2020 at 08=
:58:22PM +0200, J=C3=B6rn Clausen wrote:<br>
> Where would I find this kernel? Temporarily replacing the kernel is no=
<br>
> problem, but updating the complete system is not an option for me.<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"http://nycdn.netbsd.org/pub/NetBSD-d=
aily/netbsd-9/latest/" rel=3D"noreferrer" target=3D"_blank">http://nycdn.ne=
tbsd.org/pub/NetBSD-daily/netbsd-9/latest/</a><br>
<br>
I suspect this will make it work and you can use that kernel with your<br>
9.0 userland w/o problems.<br>
<br>
We usually are quite carefull with changes on release branches, so a userla=
nd<br>
update is quite low risc too (but I can understand avoiding it if everythin=
g<br>
just works).<br>
<br>
Martin<br>
</blockquote></div><br clear=3D"all"><br>-- <br><div dir=3D"ltr" class=3D"g=
mail_signature">Joern Clausen<br><a href=3D"https://www.oe-files.de/photogr=
aphy/" target=3D"_blank">https://www.oe-files.de/photography/</a></div>
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