[Klone-users] Problem request_get_postarg

[Mickael Auger]

Hi Stefano

I test with :
- model iterative
- KLone 2.1.0


>thanks for your report. could you try to change from dbg_if() to
dbg_err_if() both in request_cb_add_post_var() and request_cb_add_get_var()
please? That is indeed a bug.
>Let me know if that solves your problems.

I replace "dbg_if" by "dbg_err_if" in these two functions. valgrind doesn't
display errors around this case.
But I have always a randomly problem.

On the standard linux my form validation displays randomly the content of my
error 404 page while the response page is "HTTP 200 OK" response.
Note: the gdb file is not generated with "--enable_debug -v" option.

On the embedded system when I don't use --enable_debug, my web-browser
display a blank page (broken HTTP socket) and kloned process isn't killed.
First case : without --enable_debug but with a relink (-g -DDEBUG) of kloned
to obtain kloned.gdb file.
                  I call the index.kl1 page
========================
Program received signal SIGILL, Illegal instruction.
0x0 in ?? ()
(gdb) bt
#0  0x0 in ?? ()
#1  0x69b5a4 in u_malloc ()
#2  0x69af1c in u_strndup ()
#3  0x69af72 in u_strdup ()
#4  0x68a9a0 in request_set_proto ()
#5  0x68bd50 in request_parse_header ()
#6  0x684686 in http_serve ()
#7  0x684f24 in http_backend_serve ()
#8  0x68e9b4 in backend_serve ()
#9  0x6812ea in server_be_serve ()
#10 0x68163a in server_dispatch ()
#11 0x681a26 in server_loop ()
#12 0x6827ca in app_run ()
#13 0x682a7e in main ()
#14 0x6a385e in __uClibc_start_main ()
#15 0x6a3882 in __uClibc_main ()
#16 0x680054 in __exit ()
#17 0x6e16ae in ?? ()
#18 0x48d7001c in ?? ()
Ignoring packet error, continuing...
Reply contains invalid hex digit 116
========================

Second case : idem first case (with "make clean"), but I remove two .kl1
files (not "index.kl1") to /webapp/www to modify the length of kloned
binary.
                      I call index.kl1
========================
Program received signal SIGILL, Illegal instruction.
0x23d38 in ?? ()
(gdb) bt
#0  0x23d38 in ?? ()
#1  0xad98fc in u_hmap_get ()
#2  0xaceb78 in emb_lookup ()
#3  0xac55a4 in supemb_is_valid_uri ()
#4  0xac52de in broker_is_valid_uri ()
#5  0xac3cae in http_is_valid_uri ()
#6  0xaca8c8 in request_set_uri ()
#7  0xacbd1c in request_parse_header ()
#8  0xac4686 in http_serve ()
#9  0xac4f24 in http_backend_serve ()
#10 0xace9b4 in backend_serve ()
#11 0xac12ea in server_be_serve ()
#12 0xac163a in server_dispatch ()
#13 0xac1a26 in server_loop ()
#14 0xac27ca in app_run ()
#15 0xac2a7e in main ()
#16 0xae2fe6 in __uClibc_start_main ()
#17 0xae300a in __uClibc_main ()
#18 0xac0054 in __exit ()
#19 0xda96ae in ?? ()
#20 0x48d7001c in ?? ()
Ignoring packet error, continuing...
Reply contains invalid hex digit 116
=========================

The two cases kill kloned process and the randomly problem seems depend of
the number of pages in the binary.
Strange ?

Good luck :)

-- 
Mickaël AUGER
mickael.auger at gmail.com
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