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List:       illumos-discuss
Subject:    Re: [discuss] Fault manager issue?
From:       "Reginald Beardsley via illumos-discuss" <discuss () lists ! illumos ! org>
Date:       2016-03-08 23:50:00
Message-ID: 1270748220.6322012.1457481000785.JavaMail.yahoo () mail ! yahoo ! com
[Download RAW message or body]

Booted hipster LiveDVD.  format crashed w/ a segment violation.  Same thing w/ the \
installed system.

Looking at the output of various commands and the calls collected by truss, I think \
that there's a query for disk information which has a 1k buffer.  The error return is \
not trapped and when the query is made it causes a memory fault in format.

Here's the tail end of truss:


   1639 3162/1:         open("/dev/rdsk/c4d0s0", O_RDONLY|O_NDELAY)     = 4
   1640 3162/1:         stat64("/opt/VRTSvxvm/lib/libadm.so.1", 0x080466F8) Err#2 \
ENOENT  1641 3162/1:         ioctl(4, DKIOCGEXTVTOC, 0x08047558)             Err#48 \
ENOTSUP  1642 3162/1:         stat64("/opt/VRTSvxvm/lib/libefi.so.1", 0x080466F8) \
Err#2 ENOENT  1643 3162/1:         ioctl(4, DKIOCINFO, 0x08047064)                 = \
0  1644 3162/1:         ioctl(4, DKIOCGMEDIAINFO, 0x080470C0)           = 0
   1645 3162/1:         ioctl(4, DKIOCGETEFI, 0x080470A8)               = 0
   1646 3162/1:         ioctl(4, DKIOCGETEFI, 0x080470A8)               = 0
   1647 3162/1:         ioctl(4, DKIOCGETEFI, 0x080470A8)               = 0
   1648 3162/1:         close(4)                                        = 0
   1649 3162/1:         stat("/dev/rdsk/c4d0p0", 0x080473C8)            = 0
   1650 3162/1:         open("/dev/rdsk/c4d0p0", O_RDONLY)              Err#6 ENXIO
   1651 3162/1:         fstat64(2, 0x080463F0)                          = 0
   1652 3162/1:         write(2, " E r r o r :   c a n ' t".., 24)      = 24
   1653 3162/1:         write(2, " / d e v / r d s k / c 4".., 16)      = 16
   1654 3162/1:         write(2, " ' .\n", 3)                           = 3
   1655 3162/1:             Incurred fault #6, FLTBOUNDS  %pc = 0x08065162
   1656 3162/1:               siginfo: SIGSEGV SEGV_MAPERR addr=0x00000258
   1657 3162/1:             Received signal #11, SIGSEGV [default]
   1658 3162/1:               siginfo: SIGSEGV SEGV_MAPERR addr=0x00000258

The man page suggests it's been disabled by the fault manager.

Reg



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