Gary
ntop is purging idle TCP sessions and you have got this core. The DNS
has nothing to do with this problem
Luca
On May 6, 2009, at 7:56 PM, Gary Gatten wrote:
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> What would the IDLE_PURGE process have to do with the dnsCache.db –
> if anything?
>
>
>
> From: [email protected] [mailto:[email protected]] On Behalf
> Of Gary Gatten
> Sent: Wednesday, May 06, 2009 10:43 AM
> To: [email protected]; [email protected]
> Subject: [Ntop] segfault captured in gdb
>
>
>
> My log rolled over so haven’t viewed it yet, but that last 50 times
> it’s crashed it’s been during/after an “IDLE_PURGE” cycle, which
> makes some sense if I’m reading the gdb stuff correctly
>
>
>
> [New Thread 0x8060a00 (LWP 100097)]
>
>
>
> Program received signal SIGSEGV, Segmentation fault.
>
> [Switching to Thread 0x8060a00 (LWP 100097)]
>
> 0x48171d30 in scanTimedoutTCPSessions (actualDeviceId=1) at
> sessions.c:493
>
> 493 sessions.c: No such file or directory.
>
> in sessions.c
>
>
>
> (gdb) list
>
> 666 ntop.c: No such file or directory.
>
> in ntop.c
>
>
>
> (gdb) bt full
>
> #0 0x48171d30 in scanTimedoutTCPSessions (actualDeviceId=1) at
> sessions.c:493
>
> nextSession = (IPSession *) 0x0
>
> prevSession = (IPSession *) 0xd57f200
>
> theSession = (IPSession *) 0xd57f200
>
> _idx = 6940
>
> freeSessionCount = 6706
>
> purgeLimit = 15932
>
> idx = 45518
>
> #1 0x48155b53 in purgeIdleHosts (actDevice=1) at hash.c:702
>
> idx = 2562
>
> numFreedBuckets = 2562
>
> numHosts = 2562
>
> startTime = 1209730240
>
> noSessionPurgeTime = 1241618347
>
> withSessionPurgeTime = 1241617147
>
> lastPurgeTime = {1241618947, 1241618947, 0 <repeats 30 times>}
>
> firstRun = 0 '\0'
>
> theFlaggedHosts = (HostTraffic **) 0x0
>
> maxHosts = 21539
>
> scannedHosts = 21544
>
> hiresDeltaTime = -0.100000001
>
> hiresTimeStart = {tv_sec = 1241618947, tv_usec = 290872}
>
> hiresTimeEnd = {tv_sec = 1241618947, tv_usec = 288711}
>
> el = (HostTraffic *) 0x481b04c0
>
> prev = (HostTraffic *) 0xe73d000
>
> next = (HostTraffic *) 0x8060a00
>
> #2 0x4815e702 in scanIdleLoop (notUsed=0x0) at ntop.c:666
>
> i = 1
>
> #3 0x488e1ab1 in pthread_create () from /usr/lib/libpthread.so.2
>
> No symbol table info available.
>
> #4 0x48b4445f in _ctx_start () from /lib/libc.so.6
>
> No symbol table info available.
>
> (gdb)
>
>
>
>
>
>
>
> (gdb) info threads
>
> [New Thread 0x9427c00 (sleeping)]
>
> [New Thread 0x8ac9200 (sleeping)]
>
> [New Thread 0x8ac9000 (sleeping)]
>
> [New Thread 0x8060e00 (runnable)]
>
> [New Thread 0x8060c00 (runnable)]
>
> [New Thread 0x8060800 (sleeping)]
>
> [New Thread 0x8060600 (sleeping)]
>
> [New Thread 0x8060200 (LWP 100118)]
>
> 11 Thread 0x8060200 (LWP 100118) 0x488f6277 in pthread_testcancel
> ()
>
> from /usr/lib/libpthread.so.2
>
> 10 Thread 0x8060600 (sleeping) 0x488eee7f in
> pthread_mutexattr_init ()
>
> from /usr/lib/libpthread.so.2
>
> 9 Thread 0x8060800 (sleeping) 0x488eee7f in
> pthread_mutexattr_init ()
>
> from /usr/lib/libpthread.so.2
>
> 8 Thread 0x8060c00 (runnable) 0x48ae7e73 in kevent () from /lib/
> libc.so.6
>
> 7 Thread 0x8060e00 (runnable) 0x48ae90b3 in select () from /lib/
> libc.so.6
>
> 6 Thread 0x8ac9000 (sleeping) 0x488eee7f in
> pthread_mutexattr_init ()
>
> from /usr/lib/libpthread.so.2
>
> 5 Thread 0x8ac9200 (sleeping) 0x488eee7f in
> pthread_mutexattr_init ()
>
> from /usr/lib/libpthread.so.2
>
> 4 Thread 0x9427c00 (sleeping) 0x488eee7f in
> pthread_mutexattr_init ()
>
> from /usr/lib/libpthread.so.2
>
> * 3 Thread 0x8060a00 (LWP 100097) 0x48171d30 in
> scanTimedoutTCPSessions (
>
> actualDeviceId=1) at sessions.c:493
>
> 2 Thread 0x8060000 (sleeping) 0x488eee7f in
> pthread_mutexattr_init ()
>
> from /usr/lib/libpthread.so.2
>
> (gdb)
>
>
>
>
>
> (gdb) thread 3
>
> [Switching to thread 3 (Thread 0x8060a00 (LWP 100097))]#0
> 0x48171d30 in scanTimedoutTCPSessions (actualDeviceId=1) at
> sessions.c:493
>
> 493 sessions.c: No such file or directory.
>
> in sessions.c
>
>
>
>
>
>
>
>
>
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