https://bugzilla.samba.org/show_bug.cgi?id=3244





------- Additional Comments From dan1@edenpics.com 2005-11-06 11:33 -------
Regarding last report, here is some more information about that bug:

I tried to increase the limits with ulimit before running Rsync to the
following values, but the problem is still the same and the failure remains at
the exact same line. Here are the limits I used:

core file size (blocks, -c) unlimited
data seg size (kbytes, -d) unlimited
file size (blocks, -f) unlimited
pending signals (-i) 4096
max locked memory (kbytes, -l) unlimited
max memory size (kbytes, -m) unlimited
open files (-n) 10000
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 2000000
stack size (kbytes, -s) 70000
cpu time (seconds, -t) unlimited
max user processes (-u) 16383
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited

It seems that there is a buffer overflow inside the code somewhere.
Unfortunately, the code line described (1173) is just the end of the main
procedure and it doesn't indicate what happens.
It would be great to have detailed information for each error reported, but
that is another feature request.

Here is the command I use and that generates the problem:

rsync -e ssh -a -v -z -l --delete myhost.mydomain.com:/ /backup_disk/root/ \
--exclude /boot/ \
--exclude /dev/ \
--exclude /proc/ \
--exclude /backup_disk/ \
--exclude /var/log/sa/ \
--exclude /var/spool/ \
--exclude /var/run/


The program stops after the following line:
var/log/cron
var/log/maillog
var/log/messages
var/log/secure
var/log/httpd/access_log
var/log/httpd/error_log
var/log/mail/statistics

sent 151316 bytes received 14527573 bytes 65677.36 bytes/sec
total size is 14261055275 speedup is 971.54
rsync error: some files could not be transferred (code 23) at main.c(1173)

if I do only mirror /var then the directory is properly updated without any
problem with the following command:
rsync -e ssh -a -v -z -l --delete
myhost.mydomain.com:/var /backup_disk/root/var

I also print below the output of rsync-debug from the server, some last lines
before the crash:


read(3, ") AppleWebKit/312.5.1 (KHTML, li"..., 257712) = 257712
read(3, " "..., 257712) = 257712
read(3, " "..., 257712) = 257712
read(3, "n.ne.jp "..., 257712) = 257712
read(3, "patible; MSIE 6.0; Windows 98; W"..., 257712) = 257712
read(3, " "..., 55277) = 55277
munmap(0xb5a09000, 266240) = 0
close(3) = 0
munmap(0xb5a4a000, 221184) = 0
select(2, NULL, [1], NULL, {60, 0}) = 1 (out [1], left {60, 0})
write(1, "\376\6\0\7\216%\6\0\f\200\376\27\0\0\370\27\0\0\3\ 0\0\0"..., 1794) =
1794
select(1, [0], [], NULL, {60, 0}) = 1 (in [0], left {60, 0})
read(0, "\246\336}\243\356\4\335\211\324\222\227\246D\333\2 04\207"..., 8184) =
8184
select(1, [0], [], NULL, {60, 0}) = 1 (in [0], left {60, 0})
read(0, "\336d\255\322\314\\\t\2565\4\335\366V\31\1\10\342\ 221\264"..., 8184)
= 1270
open("/var/lib/mysql/phphits/log.MYI", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0660, st_size=2628608, ...}) = 0
mmap2(NULL, 266240, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb5a3f000
read(3, "\376\376\7\1\0\2\1\224\0\260\0d\0\310\0\2\0\0\1\0\ 10\1"..., 263408) =
263408
read(3, "2.134, 1\0\0\30\341\3\303\f81.255.29.89\0\0\30\340\3"..., 263407) =
263407
read(3, ".90\0\0002\5\3\22\f66.249.71.39\0\0002\0049.29\0\0"..., 261792) =
261792
read(3, "\0J\302\3U\016192.168.0.103,\0\0J\301\3V\016192.1"..., 261792) =
261792
read(3, "\361\3\2\f81.37.198.48\0\0j\362\3\3\r83.203.15"..., 261792) = 261792
read(3, ".141.94.107\0\0\232\17\3 \01681.255.119.178"..., 261792) = 261792
read(3, "133.5\0\0\311[\3l\v10.3.21.227\0\0\311\\\3m\r81"..., 261792) = 261792
read(3, "215.105.67\0\0\370\376\3\17\f218.6.43.186\0\0\370"..., 261792) =
261792
read(3, ".72.179\0\1(^\3o\r211.75.161.94\0\1(_\3"..., 261792) = 261792
read(3, "\357\2M\0\f12.189.32.37\0\1W\360\3\1\016194.106."..., 261792) = 261792
read(3, "18.56\0\1\207y\3\212\016220.160.239.59\0\1\207z\3\ 213"..., 7457) =
7457
munmap(0xb5a3f000, 266240) = 0
close(3) = 0
open("/var/log/cron", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0600, st_size=5033, ...}) = 0
read(3, "Nov 6 16:10:01 anoigo crond[197"..., 5033) = 5033
close(3) = 0
open("/var/log/maillog", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0600, st_size=21617, ...}) = 0
read(3, "Nov 6 16:07:49 anoigo sendmail["..., 21617) = 21617
close(3) = 0
open("/var/log/messages", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0600, st_size=10781, ...}) = 0
read(3, "Nov 6 16:05:43 anoigo syslogd 1"..., 10781) = 10781
close(3) = 0
open("/var/log/secure", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0600, st_size=1532, ...}) = 0
read(3, "Nov 6 16:51:13 anoigo sshd[2866"..., 1532) = 1532
close(3) = 0
select(2, NULL, [1], NULL, {60, 0}) = 1 (out [1], left {60, 0})
write(1, "\221\t\0\7\217%\6\0\10\200[\6\0\0P\6\0\0\2\0\0\0\340\3"..., 2453) =
2453
select(2, NULL, [1], NULL, {60, 0}) = 1 (out [1], left {60, 0})
write(1, "\4\0\0\7\377\377\377\377", 8) = 8
select(1, [0], [], NULL, {60, 0}) = 1 (in [0], left {59, 468000})
read(0, "\377\377\377\377\377\377\377\377", 8184) = 8
select(2, NULL, [1], NULL, {60, 0}) = 1 (out [1], left {60, 0})
write(1, "\4\0\0\7\377\377\377\377", 8) = 8
select(2, NULL, [1], NULL, {60, 0}) = 1 (out [1], left {60, 0})
write(1, "\4\0\0\7\377\377\377\377", 8) = 8
time(NULL) = 1131299440
select(2, NULL, [1], NULL, {60, 0}) = 1 (out [1], left {60, 0})
write(1, "\34\0\0\7\316\304\2\0\253\236+\1\377\377\377\377\3 4\343"..., 32) = 32
select(1, [0], [], NULL, {60, 0}) = 1 (in [0], left {58, 975000})
read(0, "\377\377\377\377", 8184) = 4
rt_sigaction(SIGUSR1, {SIG_IGN}, {0x8056e50, [USR1], SA_RESTORER|SA_RESTART,
0x5e28c8}, 8) = 0
rt_sigaction(SIGUSR2, {SIG_IGN}, {0x8056e80, [USR2], SA_RESTORER|SA_RESTART,
0x5e28c8}, 8) = 0
select(2, NULL, [1], NULL, {60, 0}) = 1 (out [1], left {60, 0})
write(1, "J\0\0\10rsync error: some files coul"..., 78) = 78
exit_group(23) = ?
Process 6325 detached


I hope that this will help.

Regards,
Daniel


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