[Bug-cpio] Re: Bug#564259: cpio: Cpio core dumps

[Clint Adams]

On Sun, Jan 10, 2010 at 05:57:50PM +0000, Nigel Horne wrote:
> #0  memcpy () at ../sysdeps/x86_64/memcpy.S:209
> 209    ../sysdeps/x86_64/memcpy.S: No such file or directory.
>     in ../sysdeps/x86_64/memcpy.S
> (gdb) bt full
> #0  memcpy () at ../sysdeps/x86_64/memcpy.S:209
> No locals.
> #1  0x000000000040ba7d in disk_buffered_write (in_buf=0x18daf92 "",  
> out_des=4,
>     num_bytes=450090) at ../../src/util.c:283
>         bytes_left = 321066
>         space_left = 512
> #2  0x000000000040c354 in copy_files_disk_to_disk (in_des=3, out_des=4,
>     num_bytes=450090,
>     filename=0x18bb450 "mnt/gateway/home/njh/Mail/Sent Items")
>     at ../../src/util.c:562
>         size = 450090
>         k = 42949672960
>         original_num_bytes = 450090
>         rc = 32680
> #3  0x00000000004085e3 in process_copy_pass () at ../../src/copypass.c:185
>         link_res = -1
>         input_name = {ds_length = 128,
>           ds_string = 0x18bb450 "mnt/gateway/home/njh/Mail/Sent Items"}
>         output_name = {ds_length = 81,
>           ds_string = 0x18bb4e0  
> "media/1d901e30-6139-4105-8f2f-055dc758dd40/mnt/gateway/home/njh/Mail/Sent 
> Items"}
>         dirname_len = 42
>         res = 0
>         slash = 0x18bb450 "mnt/gateway/home/njh/Mail/Sent Items"
>         in_file_stat = {st_dev = 18, st_ino = 1510308597, st_nlink = 1,
>           st_mode = 33188, st_uid = 1000, st_gid = 1000, __pad0 = 0,
>           st_rdev = 0, st_size = 450090, st_blksize = 8192, st_blocks =  
> 896,
>           st_atim = {tv_sec = 1259681719, tv_nsec = 0}, st_mtim = {
>             tv_sec = 1263141397, tv_nsec = 0}, st_ctim = {tv_sec =  
> 1263141397,
>             tv_nsec = 0}, __unused = {0, 0, 0}}
>         out_file_stat = {st_dev = 2054, st_ino = 2359305, st_nlink = 1,
>           st_mode = 33152, st_uid = 0, st_gid = 0, __pad0 = 0, st_rdev = 
> 0,
>           st_size = 129024, st_blksize = 4096, st_blocks = 264, st_atim = {
>             tv_sec = 1263146047, tv_nsec = 0}, st_mtim = {tv_sec =  
> 1263146047,
>             tv_nsec = 0}, st_ctim = {tv_sec = 1263146047, tv_nsec = 0},
>           __unused = {0, 0, 0}}
>         in_file_des = 3
>         out_file_des = 4
>         existing_dir = 0
> #4  0x000000000040a633 in main (argc=3, argv=0x7ffff48700f8)
>     at ../../src/main.c:798
> No locals.
> Current language:  auto
> The current source language is "auto; currently asm".
> (gdb) print out_buff
> $1 = 0x18bb240 ""
> (gdb) print output_size
> $2 = 0

Sergey, Nigel is having a problem with cpio -pdu over NFS.  I cannot reproduce 
it,
but it always manifests in a memcpy() segfault, sometimes a src/dest overlap in
a copy smaller than 512 bytes, sometimes not (as above).

Any idea what the culprit is?