Date: Fri, 18 Feb 2011 03:58:05 -0800 (PST) From: "Dr. Baud" <drbaud@yahoo.com> To: freebsd-hackers@freebsd.org Subject: spontaneous reboot - ptrace Message-ID: <137445.33642.qm@web120719.mail.ne1.yahoo.com>
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> 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.
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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