newfs segfault (was:nvme dma returns EFBIG (27))

[Warner Losh]

On Wed, Feb 10, 2021 at 4:01 PM Jesper Schmitz Mouridsen <jsm at freebsd.org>
wrote:

>
> On 10.02.2021 23.08, Emmanuel Vadot wrote:
> > On Wed, 10 Feb 2021 22:55:27 +0100
> > Jesper Schmitz Mouridsen <jsm at FreeBSD.org> wrote:
> >
> >> Hi
> >>
> >> I can dd blocks from /dev/nda0p0 but I cannot run newfs.
> >>
> >> It prints nvme0: nvme_payload_map: err  27.  and ctrl+t shows it is
> >> stuck in physwri
> >>
> >>
> https://github.com/freebsd/freebsd-src/blob/a6dc68c0e0f8a24ffaf0b4e78e58141ef7897047/sys/dev/nvme/nvme_qpair.c#L1003
> >>
> >>
> https://github.com/freebsd/freebsd-src/blob/c6c70c074633569447be4bfd2b694a1c294015bd/sys/dev/nvme/nvme_qpair.c#L567
> >>
> >> I could format as ext4 under Linux.
> >>
> >> Any hints or pointers are welcome.
> >>
> >> Thanks
> >>
> >> Jesper
> >   What board ?
> >   What version of FreeBSD ?
> >   dmesg ?
> >
> >   Any of the above is *always* required for trying to reproduce and
> > finding bugs.
> >
> >   Cheers,
> >
> I was on FreeBSD generic 13.0-ALPHA1 on
>
> on FreeBSD generic 13.0-ALPHA2 FreeBSD 13.0-ALPHA2 #0 c256201-g02611ef8ee9
>
> newfs /dev/nda0p1v now core dumps.
>
> Program terminated with signal SIGSEGV, Segmentation fault.
> #0  isblock (cp=0x100247f9f <error: Cannot access memory at address
> 0x100247f9f>, h=0, fs=<optimized out>) at /usr/src/sbin/newfs/mkfs.c:1085
> 1085    /usr/src/sbin/newfs/mkfs.c: No such file or directory.
> (gdb) bt
> #0  isblock (cp=0x100247f9f <error: Cannot access memory at address
> 0x100247f9f>, h=0, fs=<optimized out>) at /usr/src/sbin/newfs/mkfs.c:1085
> #1  alloc (size=4096, mode=mode at entry=16893) at
> /usr/src/sbin/newfs/mkfs.c:1001
> #2  0x0000000000215d20 in fsinit (utime=<optimized out>) at
> /usr/src/sbin/newfs/mkfs.c:948
> #3  mkfs (pp=<optimized out>, pp at entry=0x0, fsys=<optimized out>,
> fsys at entry=0xffffffffee26 "/dev/nda0p1") at /usr/src/sbin/newfs/mkfs.c:611
> #4  0x00000000002133ec in main (argc=<optimized out>, argv=<optimized
> out>) at /usr/src/sbin/newfs/newfs.c:405
>
> It is on my pinebookpro. nvmecontrol devlist
>   nvme0: KINGSTON SA2000M8250G
>      nvme0ns1 (238475MB)
>

What does 'nvmecontrol identify nvme0' say?

And what's kern.maxphys?

Warner


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