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 supervisor
> mode in that call chain.
>
No sooner received than done....
(kgdb) frame 18
#18 0xc01ef2d6 in mmap (p=0xc5e49020, uap=0xc5f45f80) at ../../vm/vm_mmap.c:330
330 error = vm_mmap(&p->p_vmspace->vm_map, &addr, size, prot, maxprot,
(kgdb) print *p
$2 = {p_procq = {tqe_next = 0xc0290ed0, tqe_prev = 0x0}, p_list = {
le_next = 0xc5e492e0, le_prev = 0xc0290f60}, p_cred = 0xc0a42b20,
p_fd = 0xc0a23c80, p_stats = 0xc5f44230, p_limit = 0xc099a600,
p_upages_obj = 0xc5ea59c4, p_procsig = 0xc0a3eaa0, p_flag = 16388,
p_stat = 2 '\002', p_pad1 = "\000\000", p_pid = 4672, p_hash = {
le_next = 0xc5e4a8e0, le_prev = 0xc05ad780}, p_pglist = {le_next = 0x0,
le_prev = 0xc0a42ae8}, p_pptr = 0xc58c6ec0, p_sibling = {le_next = 0x0,
le_prev = 0xc58c6f10}, p_children = {lh_first = 0x0}, p_ithandle = {
callout = 0xc1b86108}, p_oppid = 0, p_dupfd = 0, p_vmspace = 0xc5e4cec0,
p_estcpu = 1502, p_cpticks = 1247, p_pctcpu = 1791, p_wchan = 0x0,
p_wmesg = 0x0, p_swtime = 20, p_slptime = 0, p_realtimer = {it_interval = {
tv_sec = 0, tv_usec = 0}, it_value = {tv_sec = 0, tv_usec = 0}},
p_runtime = 10333, p_uticks = 0, p_sticks = 2437, p_iticks = 1991,
p_traceflag = 0, p_tracep = 0x0, p_siglist = 0, p_textvp = 0xc5dfbcc0,
p_lock = 0 '\000', p_oncpu = 0 '\000', p_lastcpu = 0 '\000',
p_pad2 = 0 '\000', p_locks = 0, p_simple_locks = 0, p_stops = 0,
p_stype = 0, p_step = 0 '\000', p_pfsflags = 0 '\000', p_pad3 = "\000",
p_retval = {0, 6}, p_sigiolst = {slh_first = 0x0}, p_sigparent = 20,
p_oldsigmask = 0, p_sig = 0, p_code = 0, p_sigmask = 0,
p_priority = 127 '\177', p_usrpri = 127 '\177', p_nice = 0 '\000',
p_comm = "rpc.rstatd\000\000\000\000\000\000", p_pgrp = 0xc0a42ae0,
p_sysent = 0xc025bbc0, p_rtprio = {type = 1, prio = 0}, p_prison = 0x0,
p_addr = 0xc5f44000, p_md = {md_regs = 0xc5f45fa8}, p_xstat = 0,
---Type <return> to continue, or q <return> to quit---
p_acflag = 2, p_ru = 0x0, p_nthreads = 0, p_aioinfo = 0x0, p_wakeup = 0,
p_peers = 0x0, p_leader = 0xc5e49020, p_asleep = {as_priority = 0,
as_timo = 0}, p_emuldata = 0x0}
(kgdb) print *uap
$3 = {addr = 0xc07a8180 "", addr_ = 0xc0a41744 "À\206zÀ\001",
len = 3229255360, len_ = 0xc0a41748 "\001", prot = 65537,
prot_ = 0xc0a4174c "\001", flags = 1, flags_ = 0xc0a41750 "\200>¢ÀÄ#&À\002",
fd = -1063108992, fd_ = 0xc0a41754 "Ä#&À\002", pad = -1071242300,
pad_ = 0xc0a41758 "\002", pos = 17592186044418, pos_ = 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 COMMAND
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 (mysqld)
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 (squid)
65534 307 289 0 -6 0 756 0 piperd I #C1- 0:00.00 (unlinkd)
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 (install)
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 (systat)
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 (getty)
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 (swapper)
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 (pagedaemon
0 3 0 0 18 0 0 0 psleep DL ?? 0:00.00 (vmdaemon)
0 4 0 0 -18 0 0 0 - RL ?? 0:00.00 (bufdaemon)
0 5 0 0 18 0 0 0 - RL ?? 0:00.00 (syncer)
0 32 1 0 18 0 204 0 pause Is ?? 0:00.00 (adjkerntz)
0 127 1 0 2 0 828 0 - Rs ?? 0:00.00 (syslogd)
0 135 1 0 2 0 1528 0 select Is ?? 0:00.00 (named)
1 141 1 0 2 0 836 0 select Is ?? 0:00.00 (portmap)
0 144 1 0 2 0 1512 0 - Rs ?? 0:00.00 (ypserv)
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 (ypbind)
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 (mountd)
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.statd)
0 182 1 0 -1 0 208 0 nfsrcv I ?? 0:00.00 (nfsiod)
0 183 1 0 2 0 208 0 - R ?? 0:00.00 (nfsiod)
0 184 1 0 10 0 208 0 nfsidl I ?? 0:00.00 (nfsiod)
0 185 1 0 10 0 208 0 nfsidl I ?? 0:00.00 (nfsiod)
0 199 1 12 2 0 908 0 select Is ?? 0:00.00 (inetd)
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 (sendmail)
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 (nntpcached
0 292 1 0 2 0 1248 0 select Is ?? 0:00.00 (sshd1)
65534 319 289 5 2 0 992 0 sbwait I ?? 0:00.00 (dnsserver)
65534 320 289 5 2 0 992 0 sbwait I ?? 0:00.00 (dnsserver)
65534 321 289 5 2 0 992 0 sbwait I ?? 0:00.00 (dnsserver)
65534 322 289 5 2 0 992 0 sbwait I ?? 0:00.00 (dnsserver)
65534 323 289 5 2 0 992 0 sbwait I ?? 0:00.00 (dnsserver)
65534 324 289 5 2 0 1016 0 select Is ?? 0:00.00 (ftpget)
0 351 1 1 -6 0 476 0 vinum Ds ?? 0:00.00 (vinum)
0 3424 292 0 2 0 1296 0 select I ?? 0:00.00 (sshd1)
0 3433 292 0 2 0 1300 0 select I ?? 0:00.00 (sshd1)
0 3486 292 0 2 0 1296 0 - R ?? 0:00.00 (sshd1)
0 4672 199 1502 105 0 868 0 - Rs ?? 0:00.00 (rpc.rstatd
#
--
The views expressed above are not those of PGS Tensor.
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