We also ran into this on one of our machines. depmod seems to be writing
to the file in question in a loop:
# strace -s 100 -p $(pgrep depmod)
write(3, "0x00\nnvidia_304 0x2887 0xfbad 0x00 0x0000
0x00\nnvidia_304 0x2887 "..., 4096) = 4096
Attaching to process 17565
Reading symbols from /sbin/depmod...(no debugging symbols found)...done.
Reading symbols from /lib/x86_64-linux-gnu/libc.so.6...Reading symbols from
/usr/lib/debug/lib/x86_64-linux-gnu/libc-2.15.so...done.
done.
Loaded symbols for /lib/x86_64-linux-gnu/libc.so.6
Reading symbols from /lib64/ld-linux-x86-64.so.2...Reading symbols from
/usr/lib/debug/lib/x86_64-linux-gnu/ld-2.15.so...done.
done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
0x00007fed6ba89040 in __write_nocancel () at
../sysdeps/unix/syscall-template.S:82
82 ../sysdeps/unix/syscall-template.S: No such file or directory.
(gdb) bt
#0 0x00007fed6ba89040 in __write_nocancel () at
../sysdeps/unix/syscall-template.S:82
#1 0x00007fed6ba1b883 in _IO_new_file_write (f=0x18164b0,
data=0x7fed621c2000, n=4096) at fileops.c:1289
#2 0x00007fed6ba1b74a in new_do_write (fp=0x18164b0,
data=0x7fed621c2000 "0x00\nnvidia_304", ' ' <repeats 11 times>, "0x2887
0xfbad 0x00 0x0000 0x00\nnvidia_304", ' ' <repeats 11 times>,
"0x2887 0xfbad 0x00 0x0000 0x00\nnvidia_304", ' ' <repeats 11
times>, "0x2887 0xfbad 0x00 0x0000 0x00\nnvi"..., to_do=4096) at
fileops.c:543
#3 0x00007fed6ba1ceb5 in _IO_new_do_write (fp=<optimized out>,
data=<optimized out>, to_do=4096) at fileops.c:516
#4 0x00007fed6ba1c025 in _IO_new_file_xsputn (n=4, data=<optimized out>,
f=0x18164b0) at fileops.c:1371
#5 _IO_new_file_xsputn (f=0x18164b0, data=<optimized out>, n=4) at
fileops.c:1305
#6 0x00007fed6b9ec4a7 in _IO_vfprintf_internal (s=<optimized out>,
format=<optimized out>, ap=<optimized out>) at vfprintf.c:1660
#7 0x00007fed6baab80b in ___fprintf_chk (fp=0x18164b0, flag=1,
format=<optimized out>) at fprintf_chk.c:37
#8 0x0000000000405a24 in ?? ()
#9 0x00000000004021a4 in ?? ()
#10 0x00007fed6b9c376d in __libc_start_main (main=0x401770, argc=5,
ubp_av=0x7fff69f88ea8, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7fff69f88e98) at libc-start.c:226
#11 0x0000000000402535 in ?? ()
#12 0x00007fff69f88e98 in ?? ()
#13 0x000000000000001c in ?? ()
#14 0x0000000000000005 in ?? ()
#15 0x00007fff69f8ae05 in ?? ()
#16 0x00007fff69f8ae12 in ?? ()
#17 0x00007fff69f8ae26 in ?? ()
#18 0x00007fff69f8ae29 in ?? ()
#19 0x00007fff69f8ae15 in ?? ()
#20 0x0000000000000000 in ?? ()
I'll build module-init-tools with debug symbols and try to reproduce.
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https://bugs.launchpad.net/bugs/1232473
Title:
depmod fills disk to 100% with invisible modules.ccwmap
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