Re: kern/48739: Reproducible panic in ld_virtio.c on NetBSD/amd64 guest running under qemu on CentOS 6.5

[Sean Davis <erplefoo%gmail.com@localhost>]

The following reply was made to PR kern/48739; it has been noted by GNATS.

From: Sean Davis <erplefoo%gmail.com@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: kern/48739: Reproducible panic in ld_virtio.c on NetBSD/amd64
 guest running under qemu on CentOS 6.5
Date: Sat, 12 Apr 2014 08:34:24 -0500

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 Another datapoint, which shows it happening as root but not as a normal
 user.
 This time 8GB RAM, no swap enabled:
 
 [ssh session]
 
 dive@ansible ~ $ ./nbpanic
 trying 8589934592 bytes
 malloc(8589934592)
 malloc(8589934592) gave us 0x7f7df7700000
 memset(0x7f7df7700000,1,8589934592)
 Killed
 dive@ansible ~ $ sudo ./nbpanic
 
 We trust you have received the usual lecture from the local System
 Administrator. It usually boils down to these three things:
 
     #1) Respect the privacy of others.
     #2) Think before you type.
     #3) With great power comes great responsibility.
 
 Password:
 trying 8589934592 bytes
 malloc(8589934592)
 malloc(8589934592) gave us 0x7f7df7700000
 memset(0x7f7df7700000,1,8589934592)
 
 
 [VM console]
 
 UVM: pid 588 (nbpanic), uid 1000 killed: out of swap
 fatal page fault in supervisor mode
 trap type 6 code 2 rip ffffffff802cc7df cs 8 rflags 10246 cr2
 ffff80008e900000 cpl 6 rsp fffffe811021eb00
 panic: trap
 cpu0: Begin traceback...
 printf_nolog() at netbsd:printf_nolog
 startlwp() at netbsd:startlwp
 alltraps() at netbsd:alltraps+0x96
 ld_virtio_vq_done1() at netbsd:ld_virtio_vq_done1+0x77
 ld_virtio_vq_done() at netbsd:ld_virtio_vq_done+0x3d
 virtio_vq_intr() at netbsd:virtio_vq_intr+0x75
 virtio_intr() at netbsd:virtio_intr+0x38
 intr_biglock_wrapper() at netbsd:intr_biglock_wrapper+0x1d
 cpu0: End traceback...
 
 dump to dev 19,17 not possible
 rebooting...
 
 
 
 On Sat, Apr 12, 2014 at 8:05 AM, <gnats-admin%netbsd.org@localhost> wrote:
 
 > Thank you very much for your problem report.
 > It has the internal identification `kern/48739'.
 > The individual assigned to look at your
 > report is: kern-bug-people.
 >
 > >Category:       kern
 > >Responsible:    kern-bug-people
 > >Synopsis:       Reproducible panic in ld_virtio.c on NetBSD/amd64 guest
 > running under qemu on CentOS 6.5
 > >Arrival-Date:   Sat Apr 12 13:05:00 +0000 2014
 >
 >
 
 
 -- 
 Sean
 
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 <div dir=3D"ltr">Another datapoint, which shows it happening as root but no=
 t as a normal user.<br>This time 8GB RAM, no swap enabled:<br><br>[ssh sess=
 ion]<br><br>dive@ansible ~ $ ./nbpanic <br>trying 8589934592 bytes<br>mallo=
 c(8589934592)<br>
 malloc(8589934592) gave us 0x7f7df7700000<br>memset(0x7f7df7700000,1,858993=
 4592)<br>Killed<br>dive@ansible ~ $ sudo ./nbpanic <br><br>We trust you hav=
 e received the usual lecture from the local System<br>Administrator. It usu=
 ally boils down to these three things:<br>
 <br>=C2=A0=C2=A0=C2=A0 #1) Respect the privacy of others.<br>=C2=A0=C2=A0=
 =C2=A0 #2) Think before you type.<br>=C2=A0=C2=A0=C2=A0 #3) With great powe=
 r comes great responsibility.<br><br>Password:<br>trying 8589934592 bytes<b=
 r>malloc(8589934592)<br>malloc(8589934592) gave us 0x7f7df7700000<br>
 memset(0x7f7df7700000,1,8589934592)<br><br><br>[VM console]<br><br>UVM: pid=
  588 (nbpanic), uid 1000 killed: out of swap<br>fatal page fault in supervi=
 sor mode<br>trap type 6 code 2 rip ffffffff802cc7df cs 8 rflags 10246 cr2=
 =C2=A0 ffff80008e900000 cpl 6 rsp fffffe811021eb00<br>
 panic: trap<br>cpu0: Begin traceback...<br>printf_nolog() at netbsd:printf_=
 nolog<br>startlwp() at netbsd:startlwp<br>alltraps() at netbsd:alltraps+0x9=
 6<br>ld_virtio_vq_done1() at netbsd:ld_virtio_vq_done1+0x77<br>ld_virtio_vq=
 _done() at netbsd:ld_virtio_vq_done+0x3d<br>
 virtio_vq_intr() at netbsd:virtio_vq_intr+0x75<br>virtio_intr() at netbsd:v=
 irtio_intr+0x38<br>intr_biglock_wrapper() at netbsd:intr_biglock_wrapper+0x=
 1d<br>cpu0: End traceback...<br><br>dump to dev 19,17 not possible<br>reboo=
 ting...<br>
 <br></div><div class=3D"gmail_extra"><br><br><div class=3D"gmail_quote">On =
 Sat, Apr 12, 2014 at 8:05 AM,  <span dir=3D"ltr">&lt;<a href=3D"mailto:gnat=
 s-admin%netbsd.org@localhost" 
target=3D"_blank">gnats-admin%netbsd.org@localhost</a>&gt;</span>=
  wrote:<br>
 <blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
 x #ccc solid;padding-left:1ex">Thank you very much for your problem report.=
 <br>
 It has the internal identification `kern/48739&#39;.<br>
 The individual assigned to look at your<br>
 report is: kern-bug-people.<br>
 <br>
 &gt;Category: =C2=A0 =C2=A0 =C2=A0 kern<br>
 &gt;Responsible: =C2=A0 =C2=A0kern-bug-people<br>
 &gt;Synopsis: =C2=A0 =C2=A0 =C2=A0 Reproducible panic in ld_virtio.c on Net=
 BSD/amd64 guest running under qemu on CentOS 6.5<br>
 &gt;Arrival-Date: =C2=A0 Sat Apr 12 13:05:00 +0000 2014<br>
 <br>
 </blockquote></div><br><br clear=3D"all"><br>-- <br>Sean
 </div>
 
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