Date: Thu, 05 Aug 1999 14:25:26 +0800 From: Stephen Hocking-Senior Programmer PGS Tensor Perth <shocking@prth.pgs.com> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: shocking@bandicoot.prth.tensor.pgs.com, current@freebsd.org Subject: Re: Interesting NFS hangs under current Message-ID: <199908050625.OAA20277@ariadne.tensor.pgs.com> In-Reply-To: Your message of "Wed, 04 Aug 1999 23:10:49 MST." <199908050610.XAA33711@apollo.backplane.com>
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> Could you print out *p and *uap in frame 18?
> =
> frame 18
> print *p
> print *uap
> =
> Also, do:
> =
> ps -axl -N /sys/compile/bleep/kernel.debug -M /var/crash/vmcore.2
> =
> This is very odd. There is no way it should be looping in superviso=
r
> mode in that call chain.
> =
No sooner received than done....
(kgdb) frame 18
#18 0xc01ef2d6 in mmap (p=3D0xc5e49020, uap=3D0xc5f45f80) at ../../vm/vm_=
mmap.c:330
330 error =3D vm_mmap(&p->p_vmspace->vm_map, &addr, size, pro=
t, maxprot,
(kgdb) print *p
$2 =3D {p_procq =3D {tqe_next =3D 0xc0290ed0, tqe_prev =3D 0x0}, p_list =3D=
{
le_next =3D 0xc5e492e0, le_prev =3D 0xc0290f60}, p_cred =3D 0xc0a42b2=
0, =
p_fd =3D 0xc0a23c80, p_stats =3D 0xc5f44230, p_limit =3D 0xc099a600, =
p_upages_obj =3D 0xc5ea59c4, p_procsig =3D 0xc0a3eaa0, p_flag =3D 16388=
, =
p_stat =3D 2 '\002', p_pad1 =3D "\000\000", p_pid =3D 4672, p_hash =3D =
{
le_next =3D 0xc5e4a8e0, le_prev =3D 0xc05ad780}, p_pglist =3D {le_nex=
t =3D 0x0, =
le_prev =3D 0xc0a42ae8}, p_pptr =3D 0xc58c6ec0, p_sibling =3D {le_nex=
t =3D 0x0, =
le_prev =3D 0xc58c6f10}, p_children =3D {lh_first =3D 0x0}, p_ithandl=
e =3D {
callout =3D 0xc1b86108}, p_oppid =3D 0, p_dupfd =3D 0, p_vmspace =3D =
0xc5e4cec0, =
p_estcpu =3D 1502, p_cpticks =3D 1247, p_pctcpu =3D 1791, p_wchan =3D 0=
x0, =
p_wmesg =3D 0x0, p_swtime =3D 20, p_slptime =3D 0, p_realtimer =3D {it_=
interval =3D {
tv_sec =3D 0, tv_usec =3D 0}, it_value =3D {tv_sec =3D 0, tv_usec =3D=
0}}, =
p_runtime =3D 10333, p_uticks =3D 0, p_sticks =3D 2437, p_iticks =3D 19=
91, =
p_traceflag =3D 0, p_tracep =3D 0x0, p_siglist =3D 0, p_textvp =3D 0xc5=
dfbcc0, =
p_lock =3D 0 '\000', p_oncpu =3D 0 '\000', p_lastcpu =3D 0 '\000', =
p_pad2 =3D 0 '\000', p_locks =3D 0, p_simple_locks =3D 0, p_stops =3D 0=
, =
p_stype =3D 0, p_step =3D 0 '\000', p_pfsflags =3D 0 '\000', p_pad3 =3D=
"\000", =
p_retval =3D {0, 6}, p_sigiolst =3D {slh_first =3D 0x0}, p_sigparent =3D=
20, =
p_oldsigmask =3D 0, p_sig =3D 0, p_code =3D 0, p_sigmask =3D 0, =
p_priority =3D 127 '\177', p_usrpri =3D 127 '\177', p_nice =3D 0 '\000'=
, =
p_comm =3D "rpc.rstatd\000\000\000\000\000\000", p_pgrp =3D 0xc0a42ae0,=
=
p_sysent =3D 0xc025bbc0, p_rtprio =3D {type =3D 1, prio =3D 0}, p_priso=
n =3D 0x0, =
p_addr =3D 0xc5f44000, p_md =3D {md_regs =3D 0xc5f45fa8}, p_xstat =3D 0=
, =
---Type <return> to continue, or q <return> to quit---
p_acflag =3D 2, p_ru =3D 0x0, p_nthreads =3D 0, p_aioinfo =3D 0x0, p_wa=
keup =3D 0, =
p_peers =3D 0x0, p_leader =3D 0xc5e49020, p_asleep =3D {as_priority =3D=
0, =
as_timo =3D 0}, p_emuldata =3D 0x0}
(kgdb) print *uap
$3 =3D {addr =3D 0xc07a8180 "", addr_ =3D 0xc0a41744 "=C0\206z=C0\001", =
len =3D 3229255360, len_ =3D 0xc0a41748 "\001", prot =3D 65537, =
prot_ =3D 0xc0a4174c "\001", flags =3D 1, flags_ =3D 0xc0a41750 "\200>=A2=
=C0=C4#&=C0\002", =
fd =3D -1063108992, fd_ =3D 0xc0a41754 "=C4#&=C0\002", pad =3D -1071242=
300, =
pad_ =3D 0xc0a41758 "\002", pos =3D 17592186044418, pos_ =3D 0xc0a41760=
""}
(kgdb) =
# ps -axl -N /sys/compile/bleep/kernel.debug -M /var/crash/vmcore.2
UID PID PPID CPU PRI NI VSZ RSS WCHAN STAT TT TIME COMMAN=
D
0 259 1 32 10 0 508 0 wait I #C1- 0:00.00 (sh)
88 276 259 0 2 0 11132 0 - R #C1- 0:00.00 (mysq=
ld)
0 282 1 32 10 0 512 0 wait I #C1- 0:00.00 (sh)
65534 289 282 0 2 0 3308 0 - R #C1- 0:00.00 (squi=
d)
65534 307 289 0 -6 0 756 0 piperd I #C1- 0:00.00 (unli=
nkd)
0 3428 3424 0 10 0 608 0 wait Is #C1 0:00.00 (sh)
0 3454 3428 4 10 0 928 0 wait I+ #C1 0:00.00 (make=
)
0 3457 3454 4 10 0 504 0 wait I+ #C1 0:00.00 (sh)
0 3458 3457 5 10 0 920 0 wait I+ #C1 0:00.00 (make=
)
0 3461 3458 5 10 0 504 0 wait I+ #C1 0:00.00 (sh)
0 3462 3461 5 10 0 1176 0 wait I+ #C1 0:00.00 (make=
)
0 3466 3462 5 10 0 508 0 wait I+ #C1 0:00.00 (sh)
0 3467 3466 49 10 0 628 0 wait I+ #C1 0:00.00 (make=
)
0 3534 3467 49 10 0 504 0 wait I+ #C1 0:00.00 (sh)
0 3535 3534 49 10 0 564 0 wait I+ #C1 0:00.00 (make=
)
0 3538 3535 51 10 0 508 0 wait I+ #C1 0:00.00 (sh)
0 3671 3538 54 10 0 392 0 wait I+ #C1 0:00.00 (make=
)
0 3676 3671 29 10 0 508 0 wait I+ #C1 0:00.00 (sh)
0 4659 3676 14 10 0 2712 0 wait I+ #C1 0:00.00 (make=
)
0 4667 4659 14 -2 0 340 0 getblk I+ #C1 0:00.00 (inst=
all)
1000 3436 3433 6 10 0 608 0 wait Is #C1 0:00.00 (sh)
1000 3442 3436 0 3 0 1292 0 - R+ #C1 0:00.00 (syst=
at)
0 3491 3486 0 3 0 608 0 ttyin Is+ #C1 0:00.00 (sh)
0 325 1 0 3 0 604 0 ttyin Is+ #C9 0:00.00 (sh)
0 327 1 0 3 0 840 0 ttyin Is+ #C2 0:00.00 (gett=
y)
1000 326 1 1 10 0 604 0 wait Is #C2 0:00.00 (sh)
0 338 326 0 2 0 1576 0 select I+ #C2 0:00.00 (ssh1=
)
0 0 0 0 -18 0 0 0 - RLs ?? 0:00.00 (swap=
per)
0 1 0 0 10 0 500 0 wait ILs ?? 0:00.00 (init=
)
0 2 0 0 -18 0 0 0 - RL ?? 0:00.00 (page=
daemon
0 3 0 0 18 0 0 0 psleep DL ?? 0:00.00 (vmda=
emon)
0 4 0 0 -18 0 0 0 - RL ?? 0:00.00 (bufd=
aemon)
0 5 0 0 18 0 0 0 - RL ?? 0:00.00 (sync=
er)
0 32 1 0 18 0 204 0 pause Is ?? 0:00.00 (adjk=
erntz)
0 127 1 0 2 0 828 0 - Rs ?? 0:00.00 (sysl=
ogd)
0 135 1 0 2 0 1528 0 select Is ?? 0:00.00 (name=
d)
1 141 1 0 2 0 836 0 select Is ?? 0:00.00 (port=
map)
0 144 1 0 2 0 1512 0 - Rs ?? 0:00.00 (ypse=
rv)
0 147 1 0 2 0 832 0 select I ?? 0:00.00 (rpc.=
ypxfrd
0 150 1 0 2 0 960 0 select Is ?? 0:00.00 (rpc.=
yppass
0 153 1 0 2 0 812 0 select Is ?? 0:00.00 (ypbi=
nd)
0 160 1 0 2 0 836 0 select Is ?? 0:00.00 (rpc.=
ypupda
0 166 1 0 2 0 516 0 select Is ?? 0:00.00 (moun=
td)
0 169 1 0 2 0 316 0 accept Is ?? 0:00.00 (nfsd=
)
0 171 169 0 2 0 296 0 - R ?? 0:00.00 (nfsd=
)
0 172 169 0 2 0 296 0 - R ?? 0:00.00 (nfsd=
)
0 173 169 0 2 0 296 0 - R ?? 0:00.00 (nfsd=
)
0 174 169 0 2 0 296 0 - R ?? 0:00.00 (nfsd=
)
0 177 1 0 2 0 262976 0 select Is ?? 0:00.00 (rpc=
=2Estatd)
0 182 1 0 -1 0 208 0 nfsrcv I ?? 0:00.00 (nfsi=
od)
0 183 1 0 2 0 208 0 - R ?? 0:00.00 (nfsi=
od)
0 184 1 0 10 0 208 0 nfsidl I ?? 0:00.00 (nfsi=
od)
0 185 1 0 10 0 208 0 nfsidl I ?? 0:00.00 (nfsi=
od)
0 199 1 12 2 0 908 0 select Is ?? 0:00.00 (inet=
d)
0 202 1 0 10 0 1000 0 nanslp Is ?? 0:00.00 (cron=
)
0 207 1 0 2 0 1300 0 select Is ?? 0:00.00 (send=
mail)
0 242 1 0 2 0 1452 0 - Rs ?? 0:00.00 (ppp)=
8 277 1 1 2 0 17444 0 select Is ?? 0:00.00 (nntp=
cached
0 292 1 0 2 0 1248 0 select Is ?? 0:00.00 (sshd=
1)
65534 319 289 5 2 0 992 0 sbwait I ?? 0:00.00 (dnss=
erver)
65534 320 289 5 2 0 992 0 sbwait I ?? 0:00.00 (dnss=
erver)
65534 321 289 5 2 0 992 0 sbwait I ?? 0:00.00 (dnss=
erver)
65534 322 289 5 2 0 992 0 sbwait I ?? 0:00.00 (dnss=
erver)
65534 323 289 5 2 0 992 0 sbwait I ?? 0:00.00 (dnss=
erver)
65534 324 289 5 2 0 1016 0 select Is ?? 0:00.00 (ftpg=
et)
0 351 1 1 -6 0 476 0 vinum Ds ?? 0:00.00 (vinu=
m)
0 3424 292 0 2 0 1296 0 select I ?? 0:00.00 (sshd=
1)
0 3433 292 0 2 0 1300 0 select I ?? 0:00.00 (sshd=
1)
0 3486 292 0 2 0 1296 0 - R ?? 0:00.00 (sshd=
1)
0 4672 199 1502 105 0 868 0 - Rs ?? 0:00.00 (rpc=
=2Erstatd
# =
-- =
The views expressed above are not those of PGS Tensor.
"We've heard that a million monkeys at a million keyboards could prod=
uce
the Complete Works of Shakespeare; now, thanks to the Internet, we k=
now
this is not true." Robert Wilensky, University of Califor=
nia
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