Solaris fcntl CPU/Lock update
Jeff Mandel
jeff.mandel at probes.com
Mon Feb 3 15:38:31 GMT 2003
Here's gdb with bt from two processes 12279 and 12327
root at reiger# gdb /usr/local/samba/bin/smbd 12279
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This GDB was configured as "sparc-sun-solaris2.8"...
"/tmp/12279" is not a core dump: File truncated
Attaching to program `/usr/local/samba/bin/smbd', process 12279
Reading symbols from /usr/lib/libsec.so.1...done.
Loaded symbols for /usr/lib/libsec.so.1
Reading symbols from /usr/lib/libgen.so.1...done.
Loaded symbols for /usr/lib/libgen.so.1
Reading symbols from /usr/lib/libsocket.so.1...done.
Loaded symbols for /usr/lib/libsocket.so.1
Reading symbols from /usr/lib/libnsl.so.1...done.
Loaded symbols for /usr/lib/libnsl.so.1
Reading symbols from /usr/lib/libdl.so.1...done.
Loaded symbols for /usr/lib/libdl.so.1
Reading symbols from /usr/lib/libpopt.so.0...done.
Loaded symbols for /usr/lib/libpopt.so.0
Reading symbols from /usr/lib/libc.so.1...done.
Loaded symbols for /usr/lib/libc.so.1
Reading symbols from /usr/lib/libmp.so.2...done.
Loaded symbols for /usr/lib/libmp.so.2
Reading symbols from
/usr/platform/SUNW,Sun-Fire-280R/lib/libc_psr.so.1...done.
Loaded symbols for /usr/platform/SUNW,Sun-Fire-280R/lib/libc_psr.so.1
Reading symbols from /usr/lib/nss_files.so.1...done.
Loaded symbols for /usr/lib/nss_files.so.1
Reading symbols from /usr/lib/nss_ldap.so.1...done.
Loaded symbols for /usr/lib/nss_ldap.so.1
Reading symbols from /usr/lib/libpthread.so.1...done.
Loaded symbols for /usr/lib/libpthread.so.1
Reading symbols from /usr/local/ldapsdk5/lib/libldap50.so...done.
Loaded symbols for /usr/local/ldapsdk5/lib/libldap50.so
Reading symbols from /usr/local/ldapsdk5/lib/libssldap50.so...done.
Loaded symbols for /usr/local/ldapsdk5/lib/libssldap50.so
Reading symbols from /usr/local/ldapsdk5/lib/libssl3.so...done.
Loaded symbols for /usr/local/ldapsdk5/lib/libssl3.so
---Type <return> to continue, or q <return> to quit---
Reading symbols from /usr/local/ldapsdk5/lib/libnss3.so...done.
Loaded symbols for /usr/local/ldapsdk5/lib/libnss3.so
Reading symbols from /usr/local/ldapsdk5/lib/libnspr4.so...done.
Loaded symbols for /usr/local/ldapsdk5/lib/libnspr4.so
Reading symbols from /usr/local/ldapsdk5/lib/libprldap50.so...done.
Loaded symbols for /usr/local/ldapsdk5/lib/libprldap50.so
Reading symbols from /usr/local/ldapsdk5/lib/libplc4.so...done.
Loaded symbols for /usr/local/ldapsdk5/lib/libplc4.so
Reading symbols from /usr/local/ldapsdk5/lib/libplds4.so...done.
Loaded symbols for /usr/local/ldapsdk5/lib/libplds4.so
Reading symbols from /usr/lib/libdb-3.3.so...done.
Loaded symbols for /usr/lib/libdb-3.3.so
Reading symbols from /usr/lib/libresolv.so.2...done.
Loaded symbols for /usr/lib/libresolv.so.2
Reading symbols from /usr/lib/libthread.so.1...done.
Loaded symbols for /usr/lib/libthread.so.1
Reading symbols from /usr/lib/librt.so.1...done.
Loaded symbols for /usr/lib/librt.so.1
Reading symbols from /usr/lib/libaio.so.1...done.
Loaded symbols for /usr/lib/libaio.so.1
sol-thread active.
Retry #1:
Retry #2:
Retry #3:
Retry #4:
[New LWP 1 ]
[New Thread 1 (LWP 1)]
Symbols already loaded for /usr/lib/libsec.so.1
Symbols already loaded for /usr/lib/libgen.so.1
Symbols already loaded for /usr/lib/libsocket.so.1
Symbols already loaded for /usr/lib/libnsl.so.1
Symbols already loaded for /usr/lib/libdl.so.1
Symbols already loaded for /usr/lib/libpopt.so.0
Symbols already loaded for /usr/lib/libc.so.1
Symbols already loaded for /usr/lib/libmp.so.2
Symbols already loaded for
/usr/platform/SUNW,Sun-Fire-280R/lib/libc_psr.so.1
Symbols already loaded for /usr/lib/nss_files.so.1
Symbols already loaded for /usr/lib/nss_ldap.so.1
Symbols already loaded for /usr/lib/libpthread.so.1
Symbols already loaded for /usr/local/ldapsdk5/lib/libldap50.so
Symbols already loaded for /usr/local/ldapsdk5/lib/libssldap50.so
Symbols already loaded for /usr/local/ldapsdk5/lib/libssl3.so
Symbols already loaded for /usr/local/ldapsdk5/lib/libnss3.so
Symbols already loaded for /usr/local/ldapsdk5/lib/libnspr4.so
Symbols already loaded for /usr/local/ldapsdk5/lib/libprldap50.so
Symbols already loaded for /usr/local/ldapsdk5/lib/libplc4.so
Symbols already loaded for /usr/local/ldapsdk5/lib/libplds4.so
Symbols already loaded for /usr/lib/libdb-3.3.so
Symbols already loaded for /usr/lib/libresolv.so.2
Symbols already loaded for /usr/lib/libthread.so.1
Symbols already loaded for /usr/lib/librt.so.1
Symbols already loaded for /usr/lib/libaio.so.1
[Switching to Thread 1 (LWP 1)]
<signal handler called>
(gdb) bt
#0 <signal handler called>
#1 0xfecd9794 in __sigprocmask () from /usr/lib/libthread.so.1
#2 0xfecce148 in _sigon () from /usr/lib/libthread.so.1
#3 0xfecd05bc in thr_sigsetmask () from /usr/lib/libthread.so.1
#4 <signal handler called>
#5 0x65646974 in ?? ()
#6 0xfecdb1f0 in usleep () from /usr/lib/libthread.so.1
#7 0xf7d1c in do_lock_spin (fsp=0x27d450, conn=0x26e760, lock_pid=0,
count=1,
offset=2147483538, lock_type=WRITE_LOCK) at locking/locking.c:175
#8 0x58bb4 in reply_lockingX (conn=0x26e760, inbuf=0x2173c9 "",
outbuf=0x237819 "", length=75, bufsize=16644) at smbd/reply.c:4714
#9 0x739bc in switch_message (type=36, inbuf=0x2173c9 "",
outbuf=0x237819 "",
size=75, bufsize=16644) at smbd/process.c:774
#10 0x73a48 in construct_reply (inbuf=0x2173c9 "", outbuf=0x237819 "",
size=75, bufsize=16644) at smbd/process.c:803
#11 0x73cf4 in process_smb (inbuf=0x2173c9 "", outbuf=0x237819 "")
at smbd/process.c:897
#12 0x74814 in smbd_process () at smbd/process.c:1294
#13 0x314b4 in main (argc=0, argv=0xffbefeac) at smbd/server.c:832
(gdb) The program is running. Quit anyway (and detach it)? (y or n) y
trace from 12327:
(gdb) bt
#0 0xfecd9794 in __sigprocmask () from /usr/lib/libthread.so.1
#1 0xfecce1e8 in _deliversigs () from /usr/lib/libthread.so.1
#2 0xfecd05c4 in thr_sigsetmask () from /usr/lib/libthread.so.1
#3 <signal handler called>
#4 0xb in ?? ()
#5 0xfecdb1f0 in usleep () from /usr/lib/libthread.so.1
#6 0xf7d1c in do_lock_spin (fsp=0x26da48, conn=0x257c68, lock_pid=0,
count=20, offset=2147483559, lock_type=WRITE_LOCK) at
locking/locking.c:175
#7 0x58bb4 in reply_lockingX (conn=0x257c68, inbuf=0x2173c9 "",
outbuf=0x237819 "", length=75, bufsize=16644) at smbd/reply.c:4714
#8 0x739bc in switch_message (type=36, inbuf=0x2173c9 "",
outbuf=0x237819 "",
size=75, bufsize=16644) at smbd/process.c:774
#9 0x73a48 in construct_reply (inbuf=0x2173c9 "", outbuf=0x237819 "",
size=75, bufsize=16644) at smbd/process.c:803
#10 0x73cf4 in process_smb (inbuf=0x2173c9 "", outbuf=0x237819 "")
at smbd/process.c:897
#11 0x74814 in smbd_process () at smbd/process.c:1294
#12 0x314b4 in main (argc=0, argv=0xffbefeac) at smbd/server.c:832
(gdb) The program is running. Quit anyway (and detach it)? (y or n) y
jra at dp.samba.org wrote:
>On Fri, Jan 31, 2003 at 09:07:23AM -0800, Jeff Mandel wrote:
>
>
>>I have followed this fcntl bug closely, and I just applied a T-patch for
>>solaris 8 which brought the kernel 108528-19. This includes the fix for
>>4735093. This has not fixed the problem of smbd growing to consume all
>>available CPU.
>>Environment is SunOS reiger 5.8 Generic_108528-19 sun4u sparc
>>SUNW,Sun-Fire-280R
>>nss_ldap-203
>>pam_ldap-137
>>
>>Here's an excerpt of the truss I've used to diagnose this with sun.
>>
>>24495/1: *** SUID: ruid/euid/suid = 0 / 3007 / 3007 ***
>>24495/1: *** SGID: rgid/egid/sgid = 0 / 125 / 125 ***
>>Base time stamp: 1041263328.3198 [ Mon Dec 30 16:48:48 CET 2002 ]
>>24495/1: psargs: /usr/local/samba/bin/smbd -D
>>-s/usr/local/samba/lib/smb.
>>conf
>>24495/1: 0.0012 sigprocmask(SIG_SETMASK, 0xFED2AD70, 0xFFBEDF10) = 0
>>24495/1: set = 0xFFBFFEFF 0x00001FFF 0 0
>>24495/1: oset = 0 0 0 0
>>24495/1: 0.0016 lwp_kill(1, SIGUSR1) = 0
>>24495/1: 0.0018 sigprocmask(SIG_SETMASK, 0xFFBEDF10, 0x00000000) = 0
>>24495/1: set = 0 0 0 0
>>24495/1: 0.0019 Received signal #16, SIGUSR1 [caught]
>>24495/1: siginfo: SIGUSR1 pid=24495 uid=0 code=-1
>>24495/1: 0.0021 setcontext(0xFFBED9C8)
>>24495/1: 0.0022 sigprocmask(SIG_SETMASK, 0xFED2AD70, 0xFFBEDEB0) = 0
>>24495/1: set = 0xFFBFFEFF 0x00001FFF 0 0
>>24495/1: oset = 0 0 0 0
>>24495/1: 0.0025 lwp_kill(1, SIGUSR1) = 0
>>
>>
>
>Please ensure the smbd process is compiled with debug symbols (-g)
>and then attach to it with gdb and please send in a stack backtrace
>(bt command in gdb).
>
>Thanks,
>
> Jeremy.
>
>
>
>>*** Repeats continuously ***
>>
>>Any suggestions?
>>
>>
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