From: Richard Weinberger <richard@nod.at>
To: Joel Fernandes <agnel.joel@gmail.com>
Cc: Jeff Dike <jdike@addtoit.com>,
user-mode-linux-devel@lists.sourceforge.net
Subject: Re: [uml-devel] UML hangs with hrtimer test module
Date: Wed, 28 Mar 2018 13:04:14 +0200 [thread overview]
Message-ID: <3115476.io4Xh1L8hP@blindfold> (raw)
In-Reply-To: <CAD=GYpatpGo=6mwhkw+RCQX=TNxX9jyfsq67srFc6+FhYtxaWg@mail.gmail.com>
Am Mittwoch, 28. März 2018, 12:28:02 CEST schrieb Joel Fernandes:
> Hi,
>
> I wrote a kernel module to play with hrtimer subsystem and it hangs
> with UML, Any ideas on why it may be hanging? It doesn't hang on any
> of my other machines. Hopefully I'm not doing something stupid, but I
> don't think I am..
>
> It appears the timer handler does fire. However, the UML process is
> continously doing a kill(SIGALRM) to the host, and the shell hangs.
> Here's the continous strace output of UML's process at the time of the
> hang: https://hastebin.com/ikehadapon.sql
>
> To build UML, I do:
> make ARCH=um x86_64_defconfig
>
> UML kernel version is v4.16-rc4
>
> Here's the module I'm loading:
Please share the full sources that compile.
The I can have a look.
Thanks,
//richard
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next prev parent reply other threads:[~2018-03-28 11:22 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-28 10:28 [uml-devel] UML hangs with hrtimer test module Joel Fernandes
2018-03-28 11:04 ` Richard Weinberger [this message]
2018-03-28 13:11 ` Geert Uytterhoeven
2018-03-28 13:19 ` Richard Weinberger
2018-03-28 22:19 ` Joel Fernandes
2018-03-28 22:35 ` Richard Weinberger
2018-03-29 6:04 ` Geert Uytterhoeven
2018-03-29 20:20 ` Joel Fernandes
2018-03-29 20:34 ` Richard Weinberger
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