Date: Wed, 30 Aug 2006 12:09:44 -0700 From: Steve Kargl <sgk@troutmask.apl.washington.edu> To: John Baldwin <jhb@freebsd.org> Cc: amd64@freebsd.org Subject: Re: FINALLY! Re: linux32 breakage in current.. Message-ID: <20060830190944.GA2146@troutmask.apl.washington.edu> In-Reply-To: <200608301404.53834.jhb@freebsd.org> References: <200608151701.46724.jhb@freebsd.org> <200608291928.59024.jhb@freebsd.org> <20060830170945.GA1156@troutmask.apl.washington.edu> <200608301404.53834.jhb@freebsd.org>
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On Wed, Aug 30, 2006 at 02:04:53PM -0400, John Baldwin wrote:
> On Wednesday 30 August 2006 13:09, Steve Kargl wrote:
> > On Tue, Aug 29, 2006 at 07:28:58PM -0400, John Baldwin wrote:
> > >
> > > But when you add printf's linux_ipc() isn't being called? *sigh* Try
> > > this anyway:
> > >
> > > Index: linux32_machdep.c
> > > ===================================================================
> > > RCS file: /host/cvs/usr/cvs/src/sys/amd64/linux32/linux32_machdep.c,v
> > > retrieving revision 1.17
> > > diff -u -r1.17 linux32_machdep.c
> >
> > The printf is not triggered. :( I did a ktrace of acroread. kdump
> > shows
>
> You have to use linux_kdump with ktrace.out from a linux binary. But,
> you still get segfaults with this patch in place? This patch just
> puts Giant around the one system call that the cvsup changes you
> pointed out removed it from. :( IOW, it's just another way of removing
> undoing the cvsup changes.
Yes, acroread still segfaults with your patch applied.
I did not know I needed linux_kdump. Here's the end of the
linux_kdump output.
1332 bash CALL linux_fork
1332 bash RET linux_fork 1337/0x539
1332 bash CALL linux_rt_sigprocmask(0x2,0xffffcff0,0,0x8)
1332 bash RET linux_rt_sigprocmask 0
1332 bash CALL linux_rt_sigaction(0x11,0xffffcf10,0xffffce80,0x8)
1332 bash RET linux_rt_sigaction 0
1332 bash CALL close(0x4)
1332 bash RET close 0
1332 bash CALL read(0x3,0xffffd070,0x80)
1332 bash GIO fd 3 read 36 bytes
"/usr/X11R6/Adobe/Acrobat7.0/ENU/bin
"
1332 bash RET read 36/0x24
1332 bash CALL read(0x3,0xffffd070,0x80)
1332 bash GIO fd 3 read 0 bytes
""
1332 bash RET read 0
1332 bash CALL close(0x3)
1332 bash RET close 0
1332 bash PSIG SIGCHLD caught handler=0x8076c60 mask=0x0 code=0x0
1332 bash CALL linux_wait4(0xffffffff,0xffffce00,0x1,0)
1332 bash RET linux_wait4 1337/0x539
1332 bash CALL linux_wait4(0xffffffff,0xffffce00,0x1,0)
1332 bash RET linux_wait4 -1 errno 10 No child processes
1332 bash PSIG SIGSEGV SIG_DFL
1332 bash NAMI "bash.core"
I've put the ktrace.out file at
http://troutmask.apl.washington.edu/~kargl/ktrace.out
if it will help you out.
--
Steve
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