Re: netbsd-10 linux emulation issue

On Tue, Mar 05, 2024 at 04:12:15PM +0100, Hauke Fath (SPG) wrote: > Hi, > > I have been running the IBM Spectrum Protect (AKA Tivoli Storage Manager, > AKA2 ADSM) backup client* in linux emulation on NetBSD for almost twenty > years. It has generally been a very well-behaved piece of software. >

Re: erlang -> asmjit -> mremap questions/bugs

On Wed, Mar 01, 2023 at 05:48:08PM +0300, Valeriy E. Ushakov wrote: > On Wed, Mar 01, 2023 at 15:29:27 +0100, Thomas Klausner wrote: > > > It seems the problem is that mmap() in the mremap(2) man page example > > (which was used to implement the asmjit version) is not us

erlang -> asmjit -> mremap questions/bugs

Hi! Erlang comes with a JIT: asmjit. The current version doesn't work with PaX MPROTECT. I filed a bug report and asmjit added code using mremap(). https://github.com/asmjit/asmjit/blob/master/src/asmjit/core/virtmem.cpp#L619 The asmjit self-tests work, but in erlang with the new version there

Re: Module autounload proposal: opt-in, not opt-out

On Mon, Aug 08, 2022 at 07:18:05AM -0700, Paul Goyette wrote: > It really seems to me that the current module sub-systems is at > best a second-class capability. I often get the feeling that > others don't really care about modules, until it's the only way > to provide something else (dtrace).

ETOOMANYZLIBS

- Forwarded message from Thomas Klausner - Module Name:src Committed By: wiz Date: Thu Mar 24 10:13:01 UTC 2022 Modified Files: src/common/dist/zlib: deflate.c deflate.h trees.c Log Message: zlib: Fix a bug that can crash deflate on some input when using Z_FIXED. https

Re: python vs. semaphores

On Tue, Dec 14, 2021 at 02:08:39PM +0100, Thomas Klausner wrote: > Is anyone aware of problems with semaphores on NetBSD, or has looked > at this particular problem before? Ok, my first test already gave me a bug. The man page says that multiple consecutive sem_open calls (without sem

python vs. semaphores

Hi! Since at least python 2.7 (2011, probably longer, I haven't dug deeper) pkgsrc comes with a patch for Python that disables POSIX semaphore use (pthread_mutex* and pthread_cond* are used instead). I don't have a small test case yet, but when you build python without the pkgsrc patches and run

Re: General device properties API

Hi Jason! Some minor comments: Should we use ssize_t instead of int for the size of objects (or -1 if not existing)? I think it's the more appropriate type; on the other hand, we don't seem to be using this type much in the kernel yet at all. Does device_getprop_string always NUL-terminate

Re: regarding the changes to kernel entropy gathering

On Sun, Apr 04, 2021 at 11:14:31AM -0700, John Nemeth wrote: > I understand the need for good random sources, and won't argue > it. My question is, how can we tell what random sources a system > actually has, i.e. is there some flag that cpuctl identify shows > when a system has

MAXTSIZ removal?

There was a commit by christos that made MAXTSIZ optional, but at least the amd64 vmparam.h still defines it. Any reason not to remove it? (I still can't start emulators/mame with a GENERIC without that change) Thomas

Re: bug help needed

Hi! I'm seeing at least the first issue as well, see the thread "recurring tstile hangs on -current" on current-users. The second one has similar lines in the backtrace, but I didn't see the concrete symptoms yet. Thomas On Mon, Jun 03, 2019 at 09:26:18AM +0200, Frank Kardel wrote: > Hi, > >

firefox sandboxing

Hi! Here's an interesting article about firefox sandboxing improvements on Linux: https://www.morbo.org/2018/05/linux-sandboxing-improvements-in_10.html We already support chroot(2). Are user namespaces (http://man7.org/linux/man-pages/man7/user_namespaces.7.html - looks like capabilities)

Re: amd64: kernel aslr support

ot;../Makefile.inc" .PATH: ${S}/kern KMOD= aslr_test SRCS= aslr_test.c .include /* $NetBSD: bufq_priocscan.c,v 1.21 2017/05/04 11:03:27 kamil Exp $ */ /*- * Copyright (c) 2018 Thomas Klausner * All rights reserved. * * Redistribution and use in source and binary form

Re: amd64: kernel aslr support

Hi! On Wed, Nov 15, 2017 at 07:40:55PM +0100, Maxime Villard wrote: > Le 14/11/2017 à 15:43, Maxime Villard a écrit : > > The size and number of these blocks is controlled by the split-by-file > > parameter in Makefile.amd64. Right now it is set to 2MB, which produces a > > kernel with ~23

mount_apfs?

In case someone is looking for a challenge, here's a description of the APFS (Apple File System) format: https://blog.cugu.eu/post/apfs/ Cheers, Thomas

Re: how to tell if a process is 64-bit

On Sat, Sep 09, 2017 at 05:58:53AM +1000, Matthew Green wrote: > > In a cross-platform process utility tool the question came up how to > > decide if a process is 64-bit. > > > > https://github.com/giampaolo/psutil/issues/1102 > > > > What's the best answer for NetBSD? > > in C: > >

Re: how to tell if a process is 64-bit

On Fri, Sep 08, 2017 at 07:38:24AM -0400, Mouse wrote: > First, I have to ask: what does it mean to say that a particular > process is - or isn't - 64-bit? Many 64-bit ports support running 32-bit applications (compat_netbsd32, compat_linux32). Thomas

how to tell if a process is 64-bit

Hi! In a cross-platform process utility tool the question came up how to decide if a process is 64-bit. https://github.com/giampaolo/psutil/issues/1102 What's the best answer for NetBSD? Thomas

Re: Restricting rdtsc [was: kernel aslr]

On Tue, Mar 28, 2017 at 10:36:52PM +0200, Maxime Villard wrote: > I already thought about this a few months ago, and my conclusion back then > was that it is very difficult to achieve if we want both good performance > and good security. This is a little off-topic, but the idea would consist in >

Fixed modular kernel path and different kernels

Hi! One issue that made me avoid modular kernels is that updating is finickier. When you switch from one modular kernel to another, you have to replace /netbsd and /stamd/amd64/${VERSION}/modules. So for example, when testing two different kernels of the same -current major version, you can not

Re: RFC: softint-based if_input

On Thu, Feb 04, 2016 at 05:53:45AM +, Taylor R Campbell wrote: >Date: Thu, 4 Feb 2016 14:35:46 +0900 >From: Ryota Ozaki > >On Thu, Feb 4, 2016 at 11:35 AM, Thor Lancelot Simon > wrote: >> On Wed, Feb 03, 2016 at 01:44:58PM +0900, Ryota

Re: sys/clock.h finalization

On Mon, Dec 22, 2014 at 01:44:02AM +0100, Kamil Rytarowski wrote: Please let finalize src/sys/sys/clock.h: 1. Please review and add man page to src/share/man/man9 Thomas K. is responsible for man pages according to src/doc/RESPONSIBLE Committed with slight changes, thanks! Thomas

Re: Does options P1003_1B_SEMAPHORE still exist?

On Tue, May 06, 2014 at 07:34:44PM +0200, Matthias Drochner wrote: As has been mentioned before, the (kernel) semaphore implementation in -current doesn't work well. In pkgsrc Python, use of semaphores was disabled because threaded Python scripts didn't work. I also found that disabling

Re: Patch: cprng_fast performance - please review.

On Fri, Apr 18, 2014 at 01:39:18PM -0400, Thor Lancelot Simon wrote: How do you count to 9K? I see: 2K for p 2K for q 1280 bytes for w Are you talking about this w? + uint32_t w[1280], *p = state-p, *q = state-q; This looks like 1280x4 bytes to me. Thomas

Re: Vnode API change: VOP_LOCK

On Fri, Feb 21, 2014 at 12:35:40PM +0100, J. Hannken-Illjes wrote: The current implementation of vn_lock() is racy. Modification of the vnode oprations vector for active vnodes is unsafe because it is not known whether deadfs or the original file system will be called. - Pass down LK_RETRY

dtrace support level?

Hi! Just out of curiosity, what percentage, approximately, of the stuff on http://www.brendangregg.com/dtrace.html would work on NetBSD-current right now? Thomas

Re: ~5 percent kernel performance loss in the last 3 weeks

On Wed, Dec 04, 2013 at 02:09:49PM +0100, Christoph Badura wrote: I was able to pin this down on the pcu/fpu changes. A kernel from just before that change doesn't have the performance loss. Those have been reverted. Thomas

Re: pbulk using tmpfs

On Sat, Apr 20, 2013 at 11:47:59PM +0200, iMil wrote: I'm running bulk builds for various archs using pbulk for quite some time now, and one of the domUs used for this is hosted by a server with a LSI MPT Fusion Raid controller. In short, that controller sucks, poor write performances, it is a

Re: pinning down dk? assignment

On Mon, Jul 23, 2012 at 04:21:55PM +0200, Martin Husemann wrote: You can mount them by name. I have (on my non-GPT root disk): NAME=sb2k5Root/a/ ffs rw,log 1 1 NAME=sb2k5Root/bnoneswapsw,dp0 0 in /etc/fstab. With gpt you can label the

Re: Quota on tmpfs

On Thu, Jul 12, 2012 at 09:33:42PM -0400, Matthew Mondor wrote: If I remember there is some optional support for symbolic links to resolve to user-specific targets, but I forgot the details. With that /tmp/ could potentially be a symbolic link pointing to say, /tmpfs/user/ I think. I think

Re: Rump FS throughput

On Thu, May 31, 2012 at 01:45:53PM -0400, Matthew Mondor wrote: Although it's useful to mount random media more safely than it would be using kernel-space, I noticed that using 64KB reads, the kernel cd9660 will gladly read ~20MB/s from a DVD, but that rump_cd9660 using 64KB reads is limited

Re: watching dynamic device attachment?

On Fri, May 04, 2012 at 09:52:36AM -0500, Eric Haszlakiewicz wrote: hmm... I noticed that both devpubd(8) and drvctl(8) refer to a drvctl(4), but I can't find any such man page. Can someone point me at where it might be? AFAIK noone wrote it yet :( Thomas

Re: O-A loan

On Mon, Feb 20, 2012 at 03:52:39AM +, YAMAMOTO Takashi wrote: y...@mwd.biglobe.ne.jp (YAMAMOTO Takashi) wrote: i'd like to to either fix or remove O-A page loaning. the biggest problem is the lack of users. thus no way to test. any ideas? After looking at O-A loaning code in

Re: Respawn crashed PUFFS filesystems?

On Sun, Feb 12, 2012 at 07:12:25AM +0100, Emmanuel Dreyfus wrote: I thought that we could respawn a crashed userland filesystem, lookup all active vnodes again, and redo all operations failed at crash time. That way a crashed filesystem would just cause a delay in ongoing operations, but it

USB contigmalloc()

Matthew Dillon implemented a solution for USB/graphics cards problem stemming from the fact that some time after the boot, they can't acquire enough contiguous memory. http://thread.gmane.org/gmane.os.dragonfly-bsd.kernel/14431 Anyone interested in porting it or implementing something similar?

Re: USB contigmalloc()

On Fri, Dec 02, 2011 at 01:51:42AM +0900, Izumi Tsutsui wrote: Anyway, currently our udl(4) doesn't require such allocation, It's also a problem for radeondrm (no USB involved). Thomas

Re: bug #44412

On Fri, Jul 22, 2011 at 02:55:21PM -0400, David Riley wrote: I filed this report a while back. Someone else has tested my fix on non-PPC systems (x86, x86_64) and reported that it seems to work as well. I'm attaching the patch against -current here; could someone give it a look and

Re: Getting rid of standard boiler plate in kernel man pages CODE REFERENCES

Hi Iain! I'm not sure what you are proposing.. can you show an example diff (eg using bluetooth.9) ? Sure, attached. Thomas Index: bluetooth.9 === RCS file: /cvsroot/src/share/man/man9/bluetooth.9,v retrieving revision 1.4 diff

Getting rid of standard boiler plate in kernel man pages CODE REFERENCES

Hi! Many many many kernel (section 9) man pages contain the following sentence in their CODE REFERENCES section: This section describes places within the .Nx source tree where actual code implementing .Nm can be found. All pathnames are relative to .Pa /usr/src . .Pp I suggest we remove it

Re: something really screwed up with mmap+ffs on 5.0_STABLE

On Tue, Aug 17, 2010 at 11:52:31PM +0300, Antti Kantee wrote: It would be great if someone could confirm or debunk this on -current and for archs beyond i386. Just get the latest sources, go to sys/rump/net/lib/libshmif, comment out line 61 (the one with PREFAULT_RW) from if_shmif.c, make

Re: CVS commit: src/tests/net/icmp

[redirected from source-changes-d to a hopefully more suitable mailing list] On Mon, Jul 05, 2010 at 12:26:17AM +0300, Antti Kantee wrote: I'm happy to give a more detailed explanation on how it works, but I need one or two questions to determine the place where I should start from. I'm