[Hardy 8.04 Alpha-2] "Check CD for Defects" does not work. (Fixed in 8.04 Alpha-3.)
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
GLibC |
Fix Released
|
Medium
|
|||
casper (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
cdrom-checker (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
glibc (Debian) |
Fix Released
|
Unknown
|
|||
glibc (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
Check CD option on Live CD displays the Ubuntu splash with empty progress bar and says "Checking integrity. This may take some time." But then nothing happens. The progress bar makes no progress. The CD drive does not light up its activity LED. The CD spins down to a full stop. After a minute or so, the display goes blank black except for a blinking underscore cursor in the upper left corner. Ctrl-Alt-Del will reboot. I tried this on a Gateway Core 2 Duo (1.86 GHz) and a Northgate Celeron (2.2 GHz). Both of these machines do execute the Check CD function on Hardy Alpha-1 CD, but not the one on Alpha-2 CD downloaded today 12/21/07 from default server for my location (California, USA).
Related branches
Changed in glibc: | |
status: | Unknown → Confirmed |
Changed in glibc: | |
status: | Unknown → Fix Released |
Changed in glibc: | |
status: | Confirmed → Fix Released |
Changed in glibc: | |
importance: | Unknown → Medium |
The following code does not work anymore on glibc 2.7, while it was working on
glibc 2.6:
#include <stdio.h>
int main()
{
char *buf = " ";
char *str;
sscanf (buf, "%as", &str);
printf("%p\n", str);
return 0;
}
Instead the glibc now reports an invalid pointer:
*** glibc detected *** ./test: munmap_chunk(): invalid pointer: so.6(cfree+ 0x1b6)[ 0x2b8ac7560d06] so.6(_IO_ vfscanf+ 0x239f) [0x2b8ac753e29f ] so.6(vsscanf+ 0x75)[0x2b8ac75 4ec85] so.6(_IO_ sscanf+ 0x88)[0x2b8ac75 498b8] so.6(__ libc_start_ main+0xf4) [0x2b8ac75071c4 ] 2b8ac72e8000 r-xp 00000000 08:02 2b8ac72eb000 rw-p 2b8ac72e8000 00:00 0 2b8ac74e9000 rw-p 0001c000 08:02 2b8ac763d000 r-xp 00000000 08:02 2b8ac783d000 ---p 00154000 08:02 2b8ac7840000 r--p 00154000 08:02 2b8ac7842000 rw-p 00157000 08:02 2b8ac7848000 rw-p 2b8ac7842000 00:00 0 2b8ac7855000 r-xp 00000000 08:02 2b8ac7a55000 ---p 0000d000 08:02 2b8ac7a56000 rw-p 0000d000 08:02 7fffe37df000 rw-p 7fffe37ca000 00:00 0 0-ffffffffff601 000 r-xp 00000000 00:00 0 [vdso]
0x00007fffe37dd8c0 ***
======= Backtrace: =========
/lib/libc.
/lib/libc.
/lib/libc.
/lib/libc.
./test[0x4004bf]
/lib/libc.
./test[0x400409]
======= Memory map: ========
00400000-00401000 r-xp 00000000 08:02
2392545 /tmp/test
00600000-00601000 rw-p 00000000 08:02
2392545 /tmp/test
00601000-00622000 rw-p 00601000 00:00 0 [heap]
2b8ac72cb000-
6669895 /lib/ld-2.7.so
2b8ac72e8000-
2b8ac74e7000-
6669895 /lib/ld-2.7.so
2b8ac74e9000-
6669873 /lib/libc-2.7.so
2b8ac763d000-
6669873 /lib/libc-2.7.so
2b8ac783d000-
6669873 /lib/libc-2.7.so
2b8ac7840000-
6669873 /lib/libc-2.7.so
2b8ac7842000-
2b8ac7848000-
21217454 /lib/libgcc_s.so.1
2b8ac7855000-
21217454 /lib/libgcc_s.so.1
2b8ac7a55000-
21217454 /lib/libgcc_s.so.1
7fffe37ca000-
[stack]
ffffffffff60000