Steinar H. Gunderson wrote:
> On Mon, Nov 19, 2007 at 07:43:16PM +0100, Jonas Häggqvist wrote:
>> Unfortunately, it came back. I have a backtrace now:
>
> Thanks. This looks like a most real bug, probably related to structure
> padding somehow, but I'm not entirely sure how to attack it. Could you by any
> chance reproduce it and get a backtrace under a non-optimizing build?
After a bit of convincing (nfs-utils doesn't seem to support
DEB_BUILD_OPTIONS=noopt), here it is (attached, if all goes well).
--
Jonas Häggqvist
rasher(at)rasher(dot)dk
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This GDB was configured as "arm-linux-gnu"...Using host libthread_db library
"/lib/libthread_db.so.1".
(gdb) run -d all -F
Starting program: /usr/sbin/rpc.mountd -d all -F
mountd: MNT3(/mnt/wd) called
Program received signal SIGSEGV, Segmentation fault.
0x400b2e4c in memcpy () from /lib/libc.so.6
(gdb) bt full
#0 0x400b2e4c in memcpy () from /lib/libc.so.6
No symbol table info available.
#1 0x00011428 in hostent_dup (hp=0x4015a9bc) at hostname.c:152
len_ent = 20
len_name = 12
num_aliases = 1
len_aliases = 4
num_addr_list = 2
len_addr_list = 12
pos = 44
i = 0
sp = (char **) 0x30613
cp = (struct hostent *) 0x316f8
#2 0x000117c0 in get_reliable_hostbyaddr (addr=0x2bcec "ˬ\001#", len=4,
type=2) at hostname.c:241
hp = (struct hostent *) 0x0
reverse = (struct hostent *) 0x4015a9bc
forward = (struct hostent *) 0xbeb4a583
sp = (char **) 0xbeb4a58a
#3 0x0000ca34 in auth_authenticate (what=0x1aff0 "mount", caller=0x2bce8,
path=0xbeb4b5d7 "/mnt/wd")
at auth.c:153
exp = (nfs_export *) 0x0
epath = "/mnt/wd", '\0' <repeats 4089 times>
p = 0x0
hp = (struct hostent *) 0x0
addr = {s_addr = 587311296}
error = 1073862316
#4 0x0000b04c in get_rootfh (rqstp=0xbeb4cc38, path=0xbeb4c744,
error=0xbeb4c720, v3=1)
at mountd.c:384
sin = (struct sockaddr_in *) 0x2bce8
stb = {st_dev = 0, __pad1 = 0, __st_ino = 0, st_mode = 0, st_nlink = 0,
st_uid = 0,
st_gid = 0, st_rdev = 0, __pad2 = 0, st_size = 0, st_blksize = 1075156540,
st_blocks = 35434894908, st_atim = {tv_sec = 13416, tv_nsec = -1095447404},
st_mtim = {tv_sec = 1,
tv_nsec = 179736}, st_ctim = {tv_sec = -1095448764, tv_nsec = 1024}, st_ino
= 771961316853560}
estb = {st_dev = 0, __pad1 = 0, __st_ino = 0, st_mode = 0, st_nlink =
0, st_uid = 0,
st_gid = 0, st_rdev = 0, __pad2 = 0, st_size = 0, st_blksize = 0, st_blocks =
0, st_atim = {
tv_sec = 0, tv_nsec = 0}, st_mtim = {tv_sec = 0, tv_nsec = 0}, st_ctim =
{tv_sec = 0,
tv_nsec = 0}, st_ino = 0}
exp = (nfs_export *) 0x40123db4
rpath = "/mnt/wd", '\0' <repeats 690 times>, "[EMAIL PROTECTED]@[EMAIL
PROTECTED]@8\005@", '\0' <repeats 12 times>, "[EMAIL PROTECTED]@[EMAIL
PROTECTED]@[EMAIL PROTECTED]([EMAIL PROTECTED]@", '\0' <repeats 12 times>,
"[EMAIL PROTECTED]@°¹´¾\000\000\000\000([EMAIL PROTECTED]@[EMAIL PROTECTED]"...
p = 0xbeb4b5d7 "/mnt/wd"
#5 0x0000aecc in mount_mnt_3_svc (rqstp=0xbeb4cc38, path=0xbeb4c744,
res=0xbeb4c720) at mountd.c:349
fh = (struct nfs_fh_len *) 0x2be18
flavors = {0, 1, 390003, 390004, 390005}
#6 0x0001722c in rpc_dispatch (rqstp=0xbeb4cc38, transp=0x2bcd8,
dtable=0x25640, nvers=3,
argp=0xbeb4c744, resp=0xbeb4c720) at rpcdispatch.c:55
dent = (struct rpc_dentry *) 0x255b8
#7 0x0000c48c in mount_dispatch (rqstp=0xbeb4cc38, transp=0x2bcd8) at
mount_dispatch.c:83
argument = {dirpath = 0x2f530 "/mnt/wd"}
result = {fstatus = {fhs_status = 0, fhstatus_u = {
fhs_fhandle = '\0' <repeats 16 times>, "[EMAIL PROTECTED]"}}, mountlist =
0x0,
exports = 0x0}
#8 0x401215ec in svc_getreq_common () from /lib/libc.so.6
No symbol table info available.
#9 0x40121630 in svc_getreqset () from /lib/libc.so.6
No symbol table info available.
#10 0x0000ee24 in my_svc_run () at svc_run.c:90
readfds = {fds_bits = {512, 0 <repeats 31 times>}}
selret = 1
#11 0x0000c344 in main (argc=4, argv=0xbeb4ce14) at mountd.c:722
export_file = 0x1b0c0 "/etc/exports"
state_dir = 0x1b0d0 "/var/lib/nfs"
foreground = 1
port = 0
descriptors = 0
c = -1
sa = {__sigaction_handler = {sa_handler = 0xa65c <sig_hup>,
sa_sigaction = 0xa65c <sig_hup>}, sa_mask = {__val = {0 <repeats 32
times>}}, sa_flags = 0,
sa_restorer = 0x40052ac0 <nis_clone_result+96660>}
rlim = {rlim_cur = 1024, rlim_max = 1024}
(gdb) quit[K[K[K[Kquit
The program is running. Exit anyway? (y or n)
