zhenlin
Veteran
Joined: 09 Nov 2002
Posts: 1361
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 Posted: Fri Jul 04, 2003 1:42 pm Post subject: segfault in _int_malloc() in /lib/libc.so.6 |
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Under what conditions would malloc() segfault?
I want to know because my program keeps on dieing, at the same place. (This is after processing (mmap, munmap) about 2280 files...)
Could it be a address space shortage?
If you want to help me debug my program, I can send you the instructions and source code.
Here is as much backtrace as I can give:
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#0 0x400a04a5 in _int_malloc () from /lib/libc.so.6
No symbol table info available.
#1 0x4009f66f in malloc () from /lib/libc.so.6
No symbol table info available.
#2 0x40056dd0 in qsort () from /lib/libc.so.6
No symbol table info available.
#3 0x08049d5c in SCDoFile (ext_filename=0x4015131c "") at shred-compare.c:262
fileStat = {st_dev = 837, __pad1 = 0, st_ino = 163632, st_mode = 33188, st_nlink = 1, st_uid = 0, st_gid = 0, st_rdev = 0,
__pad2 = 0, st_size = 3157, st_blksize = 4096, st_blocks = 8, st_atime = 1052628913, __unused1 = 0, st_mtime = 1052628913, __unused2 = 0,
st_ctime = 1052628962, __unused3 = 0, __unused4 = 0, __unused5 = 0}
chunkInfoArr = (struct SCChunkInfo *) 0x804bc38
chunkInfo = (struct SCChunkInfo *) 0x804cf58
filename = "/usr/src/linux/drivers/char/atarimouse.c", '\0' <repeats 983 times>
md5sum_s = '\0' <repeats 32 times>
#4 0x0804a22d in main (argc=3, argv=0xbfffebd4) at shred-compare.c:333
fd = (struct _IO_FILE *) 0x401512c0
input = "/usr/src/linux/drivers/char/atarimouse.c\0\0\0\0\0\0\0\0\0\0ux.h\0\0\0\0c\0\0\0\0.c\0\0rboot.h", '\0' <repeats 949 times>
i = 0
#5 0x40041d88 in __libc_start_main () from /lib/libc.so.6
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/usr/src/linux/drivers/char/atarimouse.c is the 2280th file to be processed, excluding ./2.4.20-gentoo-r5.files
If a recompile is neccessary, I am at a loss for what CFLAGS to use. My current glibc CFLAGS are "-march=pentium3 -mcpu=pentium4 -pipe -O2" ; that is already quite conservative. Perhaps I will drop the -mcpu=pentium4 |
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