Re: cvsup broken on amd64?

On Fri, Sep 09, 2011 at 06:20:57PM +0200, Oliver Lehmann wrote:
> 
> Kostik Belousov <kostikbel_at_gmail.com> wrote:
> 
> >On Fri, Sep 09, 2011 at 05:55:13PM +0300, Kostik Belousov wrote:
> 
> >>Ok, please do the following:
> >>run cvsup under the gdb. When SIGSEGV is raised, from the gdb prompt, do:
> >>1. info registers $rsp
> >>2. info program
> >>	This should print you the pid of the process, then do
> >>3. shell procstat -v <pid>
> 
> (gdb) run
> Starting program:  
> /usr/obj/amd64/usr/ports/net/cvsup-without-gui/work/cvsup-snap-16.1h/client/FBSD_AMD64/cvsup -g  
> /usr/share/examples/cvsup/9-supfile
> Connected to cvsup.de.FreeBSD.org
> Updating collection src-all/cvs
>  Edit src/crypto/openssl/ssl/s3_lib.c
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0x00000000004d24c6 in tzload ()
> (gdb) info registers $rsp
> rsp            0x916c98 0x916c98
> (gdb) info program
>         Using the running image of child process 14704.
> Program stopped at 0x4d24c6.
> It stopped with signal SIGSEGV, Segmentation fault.
> (gdb)
> 
> nudel# procstat -v 14704
>   PID              START                END PRT  RES PRES REF SHD FL TP PATH
> 14704           0x400000           0x53f000 r-x  219    0   1   0 C-  
> vn  
> /usr/obj/amd64/usr/ports/net/cvsup-without-gui/work/cvsup-snap-16.1h/client/FBSD_AMD64/cvsup
> 14704           0x73f000           0x7bf000 rw-  128    0   1   0 C-  
> vn  
> /usr/obj/amd64/usr/ports/net/cvsup-without-gui/work/cvsup-snap-16.1h/client/FBSD_AMD64/cvsup
> 14704           0x7bf000           0x844000 rw-  119    0  15   0 -- df
> 14704           0x844000           0x845000 r--    1    0  15   0 -- df
> 14704           0x845000           0x867000 rw-   34    0  15   0 -- df
> 14704           0x867000           0x868000 r--    1    0  15   0 -- df
> 14704           0x868000           0x88a000 rw-   34    0  15   0 -- df
> 14704           0x88a000           0x88b000 r--    1    0  15   0 -- df
> 14704           0x88b000           0x8ad000 rw-   34    0  15   0 -- df
> 14704           0x8ad000           0x8ae000 r--    1    0  15   0 -- df
> 14704           0x8ae000           0x8d0000 rw-   34    0  15   0 -- df
> 14704           0x8d0000           0x8d1000 r--    1    0  15   0 -- df
> 14704           0x8d1000           0x8f3000 rw-   34    0  15   0 -- df
> 14704           0x8f3000           0x8f4000 r--    1    0  15   0 -- df
> 14704           0x8f4000           0x916000 rw-   34    0  15   0 -- df
> 14704           0x916000           0x917000 r--    1    0  15   0 -- df
> 14704           0x917000           0xa87000 rw-  344    0  15   0 -- df
%rsp value is 0x917000, so this is definitely stack overflow.

> 14704        0x800740000        0x800743000 rw-    2    0   1   0 -- df
> 14704        0x800743000        0x800751000 r--   12    0   1   0 --  
> vn /mnt/files/FreeBSD/9.0/src/crypto/openssl/ssl/s3_lib.c
> 14704     0x7ffffffbf000     0x7ffffffdf000 rwx    1    0   1   0 -- df
> 14704     0x7ffffffdf000     0x7ffffffff000 rwx   11    0   1   0 -- df
> 14704     0x7ffffffff000     0x800000000000 r-x    1    0  47   0 CN ph
> nudel#
> 
> 
> >Also, you might try to test my guesswork, by adding the following
> >patch to lang/ezm3 and rebuilding it, then rebuilding cvsup port:
> 
> [made a file below ezm3/files, cleaned the workdir, reinstalled it
> cleaned cvsup, rebuilt it]
> 
> no change so far
> 
> (gdb) run
> Starting program:  
> /usr/obj/amd64/usr/ports/net/cvsup-without-gui/work/cvsup-snap-16.1h/client/FBSD_AMD64/cvsup -g  
> /usr/share/examples/cvsup/9-supfile
> Connected to cvsup.de.FreeBSD.org
> Updating collection src-all/cvs
>  Edit src/crypto/openssl/ssl/s3_lib.c
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0x00000000004d24c6 in tzload ()
> (gdb)
I need the same information from the gdb for this crash too, with cvsup
rebuilt using the patched ezm3.