From: "Helge Deller" <deller@gmx.de>
To: John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
Cc: carlos@systemhalted.org, gniibe@fsij.org,
linux-parisc@vger.kernel.org, dave.anglin@nrc-cnrc.gc.ca
Subject: Re: threads and fork on machine with VIPT-WB cache
Date: Mon, 10 May 2010 11:56:32 +0200 [thread overview]
Message-ID: <20100510095632.173760@gmx.net> (raw)
In-Reply-To: <20100509124339.GA6797@hiauly1.hia.nrc.ca>
> Attached is my latest 2.6.33.3 patch bundle. It uses a slightly modi=
fied
> version of James' minifail fix.
Thanks Dave!
I ran the patch my usual way (SMP kernel, on top of 2.6.33.3, multiple =
screens, minifail_dave.cpp testcase).
In summary I got after 10 seconds 2 segfaults, and in all of the screen=
s the minifail_dave testcases just hang.
"ps -ef" gives this:
root 2018 1 0 11:29 ? 00:00:00 SCREEN
root 2019 2018 0 11:29 pts/1 00:00:01 /bin/bash
root 2623 2019 0 11:30 pts/1 00:00:00 ./minifail_dave
root 2625 2623 0 11:30 pts/1 00:00:00 [minifail_dave] <defunc=
t>
ls3017:~# strace -p 2623
Process 2623 attached - interrupt to quit
futex(0x4113c4e8, FUTEX_WAIT, 2624, NULL^C <unfinished ...>
Process 2623 detached
ls3017:~# strace -p 2625
attach: ptrace(PTRACE_ATTACH, ...): Operation not permitted
Interestingly, I got only 2 segfaults but 10 screens/minifails were run=
ning (and all were zombies).
This means to me, that the segfaults and the zombie/futex-waits are mos=
t likely unrelated.
Helge
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next prev parent reply other threads:[~2010-05-10 9:56 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4BA43CE5.4020807@fsij.org>
[not found] ` <87hbo4ek8l.fsf@thialfi.karme.de>
[not found] ` <4BB18B46.2070203@fsij.org>
[not found] ` <4BB53D26.60601@fsij.org>
2010-04-02 2:41 ` threads and fork on machine with VIPT-WB cache NIIBE Yutaka
2010-04-02 3:30 ` James Bottomley
2010-04-02 3:48 ` NIIBE Yutaka
2010-04-02 8:05 ` NIIBE Yutaka
2010-04-02 19:35 ` John David Anglin
2010-04-08 21:11 ` Helge Deller
2010-04-08 21:54 ` John David Anglin
2010-04-08 22:44 ` John David Anglin
2010-04-09 14:14 ` Carlos O'Donell
2010-04-09 15:13 ` John David Anglin
2010-04-09 15:48 ` James Bottomley
2010-04-09 16:22 ` John David Anglin
2010-04-09 16:31 ` James Bottomley
2010-04-10 20:46 ` Helge Deller
2010-04-10 21:56 ` John David Anglin
2010-04-10 22:53 ` John David Anglin
2010-04-11 18:50 ` Helge Deller
2010-04-11 22:25 ` John David Anglin
2010-04-12 21:02 ` Helge Deller
2010-04-12 21:41 ` John David Anglin
2010-04-13 11:55 ` Helge Deller
2010-04-13 14:03 ` John David Anglin
2010-04-15 22:35 ` John David Anglin
2010-04-19 16:26 ` John David Anglin
2010-04-20 17:59 ` Helge Deller
2010-04-20 18:52 ` John David Anglin
2010-05-09 12:43 ` John David Anglin
2010-05-09 14:14 ` Carlos O'Donell
2010-05-10 9:56 ` Helge Deller [this message]
2010-05-10 14:56 ` John David Anglin
2010-05-10 19:20 ` Helge Deller
2010-05-10 21:07 ` John David Anglin
2010-05-11 16:37 ` John David Anglin
2010-05-11 21:39 ` John David Anglin
2010-05-11 20:44 ` Helge Deller
2010-05-11 20:41 ` Helge Deller
2010-05-11 21:26 ` John David Anglin
2010-05-11 21:41 ` Helge Deller
2010-05-15 21:02 ` John David Anglin
2010-05-16 20:22 ` Helge Deller
2010-05-16 21:38 ` John David Anglin
2010-05-22 17:25 ` John David Anglin
2010-05-23 13:11 ` Carlos O'Donell
2010-05-23 14:43 ` John David Anglin
2010-05-01 18:34 ` Thibaut VARENE
2010-05-01 20:17 ` John David Anglin
2010-05-02 10:53 ` Thibaut VARÈNE
2010-04-11 16:36 ` [PATCH] Call pagefault_disable/pagefault_enable in kmap_atomic/kunmap_atomic John David Anglin
2010-04-11 17:03 ` [PATCH] Remove unnecessary macros from entry.S John David Anglin
2010-04-11 17:08 ` [PATCH] Delete unnecessary nop's in entry.S John David Anglin
2010-04-11 17:12 ` [PATCH] Avoid interruption in critical region " John David Anglin
2010-04-11 18:24 ` James Bottomley
2010-04-11 18:45 ` John David Anglin
2010-04-11 18:53 ` James Bottomley
2010-04-11 17:26 ` [PATCH] LWS fixes for syscall.S John David Anglin
2010-06-02 15:33 ` Bug#561203: threads and fork on machine with VIPT-WB cache Modestas Vainius
2010-06-02 17:16 ` John David Anglin
2010-06-02 17:56 ` Bug#561203: " dann frazier
2010-06-03 8:50 ` Modestas Vainius
2010-06-04 1:03 ` NIIBE Yutaka
2010-06-04 5:21 ` dann frazier
2010-06-04 10:44 ` Thibaut VARENE
2010-06-07 17:11 ` dann frazier
2010-06-07 18:27 ` Thibaut VARÈNE
2010-06-07 23:33 ` dann frazier
2010-06-06 1:01 ` Modestas Vainius
2010-04-02 12:22 ` James Bottomley
2010-04-05 0:39 ` NIIBE Yutaka
2010-04-05 2:51 ` John David Anglin
2010-04-05 2:58 ` John David Anglin
2010-04-05 16:18 ` James Bottomley
2010-04-06 4:57 ` NIIBE Yutaka
2010-04-06 13:37 ` James Bottomley
2010-04-06 13:44 ` James Bottomley
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