Messages in this thread | | | Date | Fri, 24 Oct 2008 12:44:48 +0800 | From | "Peter Teoh" <> | Subject | Re: [PROBLEM] hard-lock with kmemtrace, relayfs, and splice |
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after doing a
git clone git://repo.or.cz/linux-2.6/kmemtrace.git
I reboot the OS and encountered several application crashes.....the logs are as per attached....please comment.
for bug0 and bug1, the system go into a state of complete non-responsive, even connecting via SSH into the system becomes impossible, and bug0 and bug1 was generated just before it goes into this state.
for bug2, the mouse seemed to respond, i managed to output the dmesg (which is bug2 itself).
any comments?
On Fri, Oct 10, 2008 at 5:42 PM, Pekka Enberg <penberg@cs.helsinki.fi> wrote: > (I'm cc'ing Tom, Jens, and LKML.) > > On Fri, 2008-10-10 at 12:10 +0300, Pekka Enberg wrote: >> > I'm seeing a hard lock on my machine when I run kmemtraced with the >> > following patch applied: >> > >> > http://git.kernel.org/?p=linux/kernel/git/penberg/slab-2.6.git;a=commitdiff;h=17ca1d5506b1db433f0b7167a627bfd55d319dd3 >> > >> > I can enable/disable kmemtrace via the debugfs files fine and can also >> > read the relay files with cat. >> > >> > Any idea where this is coming from? >> >> OK, it's the first splice() call in reader_thread() that causes the >> hang. Hmm. > > To recap, with a CONFIG_KMEMTRACE enabled kernel from the > "topic/kmemtrace" branch of: > > git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6.git topic/kmemtrace > > running the "kmemtraced" program from > > git://git.kernel.org/pub/scm/linux/kernel/git/penberg/kmemtrace-user.git > > results to a hard lock on my machine. I am unable to find anything > obviously wrong with it and as I can read/write the relay files just > fine, I'm beginning to think it's problem in relayfs splice > implementation. > > Tom, thoughts? > > Pekka > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ >
-- Regards, Peter Teoh [unhandled content-type:application/octet-stream][unhandled content-type:application/octet-stream][unhandled content-type:application/octet-stream] | |