Date: Wed, 23 Feb 2011 04:59:00 -0800 (PST) From: "Dr. Baud" <drbaud@yahoo.com> To: freebsd-hackers@freebsd.org Subject: Re: spontaneous reboot - ptrace Message-ID: <601918.80426.qm@web120714.mail.ne1.yahoo.com> In-Reply-To: <20110218122136.GA78089@deviant.kiev.zoral.com.ua> References: <137445.33642.qm@web120719.mail.ne1.yahoo.com> <20110218122136.GA78089@deviant.kiev.zoral.com.ua>
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As it happens the NMI was caused by attempting to access memory mapped
PCI address space. The HBA associated with the mapped PCI address space
generated a PERR. Thanks for the help.
----- Original Message ----
From: Kostik Belousov <kostikbel@gmail.com>
To: Dr. Baud <drbaud@yahoo.com>
Cc: freebsd-hackers@freebsd.org
Sent: Fri, February 18, 2011 6:21:36 AM
Subject: Re: spontaneous reboot - ptrace
On Fri, Feb 18, 2011 at 03:58:05AM -0800, Dr. Baud wrote:
>
>
> > First, do you have a console output during the run ? Is it possible
> > that machine paniced ? If not, were there any kernel messages before>
> > reboot ?
> >
> > Second, what is the process you are dumping ? Can you show at least
> > the procstat -v <pid> output for the process ?
>
> Sorry for this late response but my earlier response appears to have been
> consumed by the email reflector.
>
> I'm getting an NMI. And the trouble appears to be when trying to
> read via ptrace memory segments of type KVME_TYPE_DEVICE. The app in
> quesion allocates a large number of large memory buffers and maps them
> into virtual address space. Not all segments cause the NMI however.
> Small sampling of the virtual memory map.
You did not provided exact console output on the panic, despite requested.
What is the device that was mmaped ? Obviously, this is your problem.
Can you gather all required information ?
>
> PID START END PRT RES PRES REF SHD FL TP PATH
> 931 0x400000 0x1773000 r-x 4239 5053 2 1 CN vn
>/mnt/dia
> g/problemchild
> 931 0x1872000 0x2ef2000 rw- 416 0 1 0 C- vn
>/mnt/dia
> g/problemchld
> 931 0x2ef2000 0x6700000 rw- 11765 0 1 0 C- df
> 931 0x801872000 0x8018a2000 r-x 48 0 57 28 CN vn
>/libexec
> /ld-elf.so.1
> 931 0x8018a2000 0x8018b3000 rw- 15 0 1 0 C- df
> 931 0x8018b3000 0x801924000 rw- 113 0 1698 0 -- dv
> 931 0x801924000 0x801925000 rw- 1 0 1698 0 -- dv
> 931 0x801925000 0x801926000 rw- 1 0 1698 0 -- dv
> 931 0x801926000 0x801927000 rw- 1 0 1698 0 -- dv
> 931 0x801927000 0x801928000 rw- 1 0 1698 0 -- dv
> 931 0x801928000 0x80192a000 rw- 2 0 1698 0 -- dv
> 931 0x80192a000 0x80192b000 rw- 1 0 1698 0 -- dv
> 931 0x80192b000 0x80192c000 rw- 1 0 1698 0 -- dv
> 931 0x80192c000 0x80192d000 rw- 1 0 1698 0 -- dv
> 931 0x80192d000 0x80192e000 rw- 1 0 1698 0 -- dv
> 931 0x80192e000 0x801930000 rw- 2 0 1698 0 -- dv
> 931 0x801930000 0x801932000 rw- 2 0 1698 0 -- dv
> 931 0x801932000 0x801993000 rw- 97 0 1698 0 -- dv
> 931 0x801993000 0x8019a0000 rw- 13 0 1698 0 -- dv
> 931 0x8019a0000 0x8019a1000 rw- 1 0 1698 0 -- dv
>
> ....
>
> 931 0x802ab7000 0x802bb7000 --- 0 0 1 0 CN df
> 931 0x0x802bb70 0x0x802bd6000 rw- 17 0 1 0 C- vn
>/lib/lib
> c.so.7
> 931 0x802bd6000 0x802bf1000 rw- 18 0 1 0 C- df
> 931 0x802bf1000 0x802bfd000 r-x 9 14 2 1 CN vn
>/lib/lib
> gcc_s.so.1
> 931 0x802bfd000 0x802cfc000 --- 0 0 1 0 CN df
> 931 0x802cfc000 0x802cfe000 rw- 2 0 1 0 CN vn
>/lib/lib
> gcc_s.so.1
> 931 0x802cfe000 0x802cff000 rw- 1 0 1698 0 -- dv
> 931 0x802cff000 0x802d00000 rw- 1 0 1698 0 -- dv
> 931 0x802d00000 0x802e00000 rw- 132 0 1 0 C- df
> 931 0x802e00000 0x802f00000 rw- 109 0 1 0 C- df
> 931 0x802f00000 0x802f91000 rw- 145 0 1698 0 -- dv
> 931 0x802f91000 0x802fb2000 rw- 33 0 1698 0 -- dv
> 931 0x802fb2000 0x802fd3000 rw- 33 0 1698 0 -- dv
> 931 0x802fd3000 0x802ff5000 rw- 34 0 1698 0 -- dv
> 931 0x802ff5000 0x802ff6000 rw- 1 0 1698 0 -- dv
>
>
>
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