Notes |
(0005314)
vda
02-25-08 15:33
|
Works for me:
# ./busybox fdisk
BusyBox v1.9.1 (2008-02-15 15:10:21 CET) multi-call binary
Usage: fdisk [-luv] [-C CYLINDERS] [-H HEADS] [-S SECTORS] [-b SSZ] DISK
Change partition table
Options:
-l List partition table(s)
-u Give Start and End in sector (instead of cylinder) units
-s PARTITION Give partition size(s) in blocks
-b 2048 (for certain MO disks) use 2048-byte sectors
-C CYLINDERS Set the number of cylinders
-H HEADS Set the number of heads
-S SECTORS Set the number of sectors
-v Give fdisk version
Can you attach your .config to the bug? |
| |
(0005344)
hawq
02-26-08 00:34
|
I've uploaded my config. I think its because older gcc or glibc I've used to compile. Unfortunatelly, I can't use newer glibc/gcc there. |
| |
(0005354)
vda
02-26-08 03:52
|
You need to debug it further.
You have CONFIG_FEATURE_FDISK_WRITABLE=y. Therefore this part of code is active in fdisk_main():
#if ENABLE_FEATURE_FDISK_WRITABLE
if (argc != 1)
bb_show_usage();
Since usage message is not printed, this code is not reached. SEGV is before it - and this narrows things a lot.
Got ot fdisk_main and instrument it as follows:
int fdisk_main(...)
{
...
enum {
OPT_b = 1 << 0,
...
};
+bb_error_msg("HERE A");
INIT_G();
+bb_error_msg("HERE B");
opt = getopt32(argv, "b:C:H:lS:u" USE_FEATURE_FDISK_BLKSIZE("s"),
&str_b, &str_C, &str_H, &str_S);
argc -= optind;
argv += optind;
+bb_error_msg("HERE C");
if (opt & OPT_b) { // -b
}
if (opt & OPT_C) user_cylinders = xatoi_u(str_C); // -C
+bb_error_msg("HERE D");
if (opt & OPT_H) { // -H
...
#if ENABLE_FEATURE_FDISK_WRITABLE
+bb_error_msg("HERE Z");
if (argc != 1)
bb_show_usage();
rebuild and run. Where will it die? |
| |
(0005424)
hawq
02-26-08 11:52
|
busybox-1.9.1 $ ./busybox fdisk
fdisk: HERE A
Segmentation fault
It dies on INIT_G(). Exactly like gdb said. |
| |
(0005444)
vda
02-27-08 10:46
|
Try this fix:
#define INIT_G() do { \
PTR_TO_GLOBALS = xzalloc(sizeof(G)); \
+ asm volatile("":::"memory"); \
sector_size = DEFAULT_SECTOR_SIZE; \
If it works, let me know gcc version and architecture you build for (basically, gcc -v output). |
| |
(0005454)
hawq
02-27-08 12:15
|
It worked. Thanks.
busybox-1.9.1 $ gcc -v
Reading specs from /usr/lib/gcc-lib/i686-pld-linux/3.3.6/specs
Configured with: ../configure --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --infodir=/usr/share/info --mandir=/usr/share/man --enable-shared --enable-symvers=gnu --enable-threads=posix --enable-__cxa_atexit --enable-languages=c,c++,f77,objc,ada,java,ksi --enable-c99 --enable-long-long --disable-multilib --enable-nls --with-gnu-as --with-gnu-ld --with-system-zlib --with-slibdir=/lib --without-x i686-pld-linux
Thread model: posix
gcc version 3.3.6 (PLD Linux) |
| |
(0005464)
bernhardf
02-27-08 12:25
|
broken toolchain. |
| |
busybox.config [^] (20,272 bytes) 02-26-08 00:32 
