* tcpdump hang and system gone in freeze state
@ 2013-07-12 4:59 Youssouf Said
2013-07-12 5:03 ` Varun Sharma
0 siblings, 1 reply; 4+ messages in thread
From: Youssouf Said @ 2013-07-12 4:59 UTC (permalink / raw)
To: kernelnewbies
Can you list what changes have you done ?
Varun Sharma <vsdssd@gmail.com> a ?crit?:
>_______________________________________________
>Kernelnewbies mailing list
>Kernelnewbies at kernelnewbies.org
>http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
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* tcpdump hang and system gone in freeze state
2013-07-12 4:59 tcpdump hang and system gone in freeze state Youssouf Said
@ 2013-07-12 5:03 ` Varun Sharma
2013-07-15 8:35 ` Mulyadi Santosa
0 siblings, 1 reply; 4+ messages in thread
From: Varun Sharma @ 2013-07-12 5:03 UTC (permalink / raw)
To: kernelnewbies
As such no change in code .I just write printk statement in kernel code
flow .specfically in send and recv system call flow .
On Fri, Jul 12, 2013 at 10:29 AM, Youssouf Said
<youssouf.kernel@gmail.com>wrote:
> Can you list what changes have you done ?
>
> Varun Sharma <vsdssd@gmail.com> a ?crit :
>
>
> Hi,
>
> I build new kernel (2.6.32.60). when i execute tcpdump on this build
> kernel ,tcpdump gone in hang state and system gone in freeze state .
>
>
> ltrace tcpdump output is---
>
> __libc_start_main(0x452220, 1, 0x7fff623b6158, 0x462d70, 0x462d60
> <unfinished ...>
> strrchr("tcpdump", '/') = NULL
> getopt(1, 0x7fff623b6158, "aAB:c:C:dDeE:fF:G:i:IKlLm:M:nNOp"...) = -1
> time(NULL) = 1373602325
> gmtime(0x7fff623b5e68) = 0x313eba03e0
> localtime(0x7fff623b5e68) = 0x313eba03e0
> getuid() = 0
> pcap_lookupdev(0x7fff623b5f30) = "eth0"
> pcap_create(0x314d636140, 0x7fff623b5f30, 0x11f6690, 0x313eb9ce90, 11) =
> 0x11f6ac0
> pcap_set_snaplen(0x11f6ac0, 65535, 0x8038a0, 0x306874, 0) = 0
> pcap_set_promisc(0x11f6ac0, 1, 0, 0x306874, 0) = 0
> pcap_set_timeout(0x11f6ac0, 1000, 0, 0x306874, 0) = 0
> pcap_activate(0x11f6ac0, 0, 0, 0x306874, 0
>
>
> tcpdump hang in pcap_activate . whereas if run tcpdump in original kernel
> it works fine.can anybody know the reason?
>
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* tcpdump hang and system gone in freeze state
2013-07-12 5:03 ` Varun Sharma
@ 2013-07-15 8:35 ` Mulyadi Santosa
0 siblings, 0 replies; 4+ messages in thread
From: Mulyadi Santosa @ 2013-07-15 8:35 UTC (permalink / raw)
To: kernelnewbies
On Fri, Jul 12, 2013 at 12:03 PM, Varun Sharma <vsdssd@gmail.com> wrote:
> As such no change in code .I just write printk statement in kernel code flow
> .specfically in send and recv system call flow .
Just maybe, you place printk() in the interrupt handle or atomic context.
--
regards,
Mulyadi Santosa
Freelance Linux trainer and consultant
blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com
^ permalink raw reply [flat|nested] 4+ messages in thread
* tcpdump hang and system gone in freeze state
@ 2013-07-12 4:46 Varun Sharma
0 siblings, 0 replies; 4+ messages in thread
From: Varun Sharma @ 2013-07-12 4:46 UTC (permalink / raw)
To: kernelnewbies
Hi,
I build new kernel (2.6.32.60). when i execute tcpdump on this build kernel
,tcpdump gone in hang state and system gone in freeze state .
ltrace tcpdump output is---
__libc_start_main(0x452220, 1, 0x7fff623b6158, 0x462d70, 0x462d60
<unfinished ...>
strrchr("tcpdump", '/') = NULL
getopt(1, 0x7fff623b6158, "aAB:c:C:dDeE:fF:G:i:IKlLm:M:nNOp"...) = -1
time(NULL) = 1373602325
gmtime(0x7fff623b5e68) = 0x313eba03e0
localtime(0x7fff623b5e68) = 0x313eba03e0
getuid() = 0
pcap_lookupdev(0x7fff623b5f30) = "eth0"
pcap_create(0x314d636140, 0x7fff623b5f30, 0x11f6690, 0x313eb9ce90, 11) =
0x11f6ac0
pcap_set_snaplen(0x11f6ac0, 65535, 0x8038a0, 0x306874, 0) = 0
pcap_set_promisc(0x11f6ac0, 1, 0, 0x306874, 0) = 0
pcap_set_timeout(0x11f6ac0, 1000, 0, 0x306874, 0) = 0
pcap_activate(0x11f6ac0, 0, 0, 0x306874, 0
tcpdump hang in pcap_activate . whereas if run tcpdump in original kernel
it works fine.can anybody know the reason?
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2013-07-12 4:59 tcpdump hang and system gone in freeze state Youssouf Said
2013-07-12 5:03 ` Varun Sharma
2013-07-15 8:35 ` Mulyadi Santosa
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2013-07-12 4:46 Varun Sharma
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