misc/174436: [jail] Jails with numbers as names don't work
Mateusz Guzik
mjguzik at gmail.com
Mon Dec 17 21:40:01 UTC 2012
The following reply was made to PR kern/174436; it has been noted by GNATS.
From: Mateusz Guzik <mjguzik at gmail.com>
To: Robert Schulze <rs at bytecamp.net>
Cc: bug-followup at FreeBSD.org
Subject: Re: misc/174436: [jail] Jails with numbers as names don't work
Date: Mon, 17 Dec 2012 22:31:27 +0100
On Mon, Dec 17, 2012 at 02:57:06PM +0100, Robert Schulze wrote:
> Hello,
>
> Am 14.12.2012 17:01, schrieb Mateusz Guzik:
> >Hi,
> >
> >can you provide backtrace from this panic? Are you able to reproduce it?
>
> I can reproduce this behaviour reliably.
Can you send me your kernel or put somewhere for download?
If not, provide output of the following:
# addr2line -e /boot/kernel/kernel 0xffffffff804debff
# addr2line -e /boot/kernel/kernel 0xffffffff804dbef6
Also I don't think that '0' has any significance here. Can you change it
to something else and try again? Can you try with different IP?
Preferably 127.0.0.2 on lo0.
> Here is a backtrace, I had to type that manually:
>
> fault virtual address = 0x110
> fault code = supervisor read data, page not present
> instruction pointer = 0x20:0xffffffff804d9d54
> stack pointer = 0x28:0xffffff8489ce47d0
> frame pointer = 0x28:0xffffff8489ce47f0
> code segment = base 0x0, limit 0xfffff, type 0x1b
> = DPL 0, pres 1, long 1, def32 0, gran 1
> processor eflags = interrupt enabled, resume, IOPL = 0
> current process = 1058 (jail)
> trap number = 12
> panic: page fault
> cpuid = 7
> KDB: stack backtrace:
> #0 0xffffffff8053de06 at kdb_backtrace+0x66
> #1 0xffffffff80507c6e at panic+0x1ce
> #2 0xffffffff807579f0 at trap_fatal+0x290
> #3 0xffffffff80757d28 at trap_pfault+0x1e8
> #4 0xffffffff8075832e at trap+0x3be
> #5 0xffffffff80741bef at calltrap+0x8
> #6 0xffffffff804dbef6 at prison_deref+0x1f6
> #7 0xffffffff804debff at kern_jail_set+0x14af
> #8 0xffffffff804e1282 at sys_jail_set+0x62
> #9 0xffffffff807572d0 at amd64_syscall+0x540
> #10 0xffffffff80741ed7 at Xfast_syscall+0xf7
>
> with kind regards,
> Robert Schulze
--
Mateusz Guzik <mjguzik gmail.com>
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