[Bug 8308] rsync: exclude.c:532: change_local_filter_dir: Assertion `dir_depth < 4096/2+1' failed

[samba-bugs at samba.org]

https://bugzilla.samba.org/show_bug.cgi?id=8308

--- Comment #3 from John <jss at mensa.org.au> 2014-04-09 02:04:50 UTC ---
Some slightly better info from gdb, caught program with bad value of dir_depth,
before crash. There is no way this dir suddenly out of the blue has a depth of
1622.

Looks like i need to recompile my rsync with debug info etc thoughm to get
better info:

(gdb) break exclude.c:615 if dir_depth >= 1000
Breakpoint 2 at 0x4182f9: file exclude.c, line 615.
(gdb) c
Continuing.

Breakpoint 2, change_local_filter_dir (dname=0x7fffffff8bb0
"RPMs/rpm_lib.ss/.Rational/Version_History/ran-lads2/specs/LADS-rl2gs-lib-1-mbt_ws.spec,v",
dlen=88,
    dir_depth=1622) at exclude.c:615
615             if ( dir_depth >= MAXPATHLEN/2+1 ) {
(gdb) p dir_depth
$2 = 1622
(gdb) bt
#0  change_local_filter_dir (dname=0x7fffffff8bb0
"RPMs/rpm_lib.ss/.Rational/Version_History/ran-lads2/specs/LADS-rl2gs-lib-1-mbt_ws.spec,v",
dlen=88, dir_depth=1622)
    at exclude.c:615
#1  0x000000000040cd1b in do_delete_pass () at generator.c:362
#2  0x0000000000411fa3 in generate_files (f_out=1, local_name=<value optimized
out>) at generator.c:2180
#3  0x000000000041d161 in do_recv (f_in=<value optimized out>, f_out=1,
local_name=0x0) at main.c:945
#4  0x000000000041d7f5 in do_server_recv (f_in=0, f_out=1, argc=<value
optimized out>, argv=<value optimized out>) at main.c:1057
#5  start_server (f_in=0, f_out=1, argc=<value optimized out>, argv=<value
optimized out>) at main.c:1091
#6  0x000000000041d935 in child_main (argc=<value optimized out>, argv=<value
optimized out>) at main.c:1064
#7  0x00000000004380b8 in local_child (argc=2, argv=0x7fffffffae10,
f_in=0x7fffffffde7c, f_out=0x7fffffffde78, child_main=0x41d920 <child_main>) at
pipe.c:167
#8  0x000000000041bafa in do_cmd (cmd=<value optimized out>, machine=0x0,
user=<value optimized out>, remote_argv=<value optimized out>,
    remote_argc=<value optimized out>, f_in_p=0x7fffffffde7c,
f_out_p=0x7fffffffde78) at main.c:535
#9  0x000000000041e758 in start_client (argc=3, argv=0x680230) at main.c:1393
#10 main (argc=3, argv=0x680230) at main.c:1633
(gdb) local
Undefined command: "local".  Try "help".
(gdb) info local
cur_depth = 1
filt_array = {0x0 <repeats 2049 times>}
__PRETTY_FUNCTION__ = "change_local_filter_dir"
(gdb) up
#1  0x000000000040cd1b in do_delete_pass () at generator.c:362
362                             change_local_filter_dir(fbuf, strlen(fbuf),
F_DEPTH(file));
(gdb) info local
file = 0x7ffff0694380
fbuf =
"RPMs/rpm_lib.ss/.Rational/Version_History/ran-lads2/specs/LADS-rl2gs-lib-1-mbt_ws.spec,v\000tes\000l\000es\000l\000\000l\000\000s\000l\000es\000l\000\000l\000tes\000l\000\000v\000tes\000l\000s\000l",
'\000' <repeats 858 times>"\220,
\226\377\377\377\177\000\000\200\226\377\377\377\177\000\000\377\377\377\377\000\000\000\000\360\253\377\377\377\177\000\000\312\352D\000\000\000\000\000gD\004f>\000\000\000\024",
'\000' <repeats 383 times>"\336, \352D", '\000' <repeats 25 times>, "\002",
'\000' <repeats 539 times>...
st = {st_dev = 2059, st_ino = 39845946, st_nlink = 2, st_mode = 17917, st_uid =
1070, st_gid = 1062, __pad0 = 0, st_rdev = 0, st_size = 4096, st_blksize =
4096,
  st_blocks = 8, st_atim = {tv_sec = 1396936899, tv_nsec = 233215828}, st_mtim
= {tv_sec = 1396936901, tv_nsec = 344215827}, st_ctim = {tv_sec = 1396936901,
    tv_nsec = 344215827}, __unused = {0, 0, 0}}
j = <value optimized out>
(gdb) p file
$3 = (struct file_struct *) 0x7ffff0694380
(gdb) p F_DEPTH(file)
No symbol "F_DEPTH" in current context.

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