Hi,
* Solene Rapenne wrote:
> I'm proposing a very simple change to the automatic policy of the CPU
> frequency scheduler.
>
> Currently, every 100ms the scheduler is doing this:
>
> - when the CPU load exceeds the threshold, CPU frequency is set to the
> maximum and the variable downbeats is
Hi,
syzkaller and witness found a bug in my pcb table mutex commit.
https://syzkaller.appspot.com/bug?id=90a4811c99d6a2df7b252971b754612ca632894d
For multicast and broadcast packets udp_input() traverses the loop
of all UDP PCBs. There it calls udp_sbappend() while holding the
UDB table mutex.
The following diff makes {audio,midi,radio,video}_hw_if structs in the
kernel const, in order to move them to rodata.
Index: share/man/man9/audio.9
===
RCS file: /OpenBSD/src/share/man/man9/audio.9,v
retrieving revision 1.29
diff -u
On Mon, Mar 21, 2022 at 12:24:33PM +0100, Claudio Jeker wrote:
> During config reload the RIB may need to be resynced when the
> 'no evaluate' setting changes.
>
> This changes the code to actually flush the Adj-RIB-Out of affected peers
> and then adjust the RIB in a 2nd step. That way there is
In struct rib_entry bgpd keeps the 'best' or active prefix cached.
Now to support more than one one prefix per path (for ECMP and add-path)
I need the ability to access the previous element. The currently used
LIST macros do not support that. So I want to switch that to TAILQ but
the TAILQ head is
On 20/03/22(Sun) 05:39, Visa Hankala wrote:
> On Sat, Mar 19, 2022 at 12:10:11AM +0100, Alexander Bluhm wrote:
> > On Thu, Mar 17, 2022 at 07:25:27AM +, Visa Hankala wrote:
> > > On Thu, Mar 17, 2022 at 12:42:13AM +0100, Alexander Bluhm wrote:
> > > > I would like to use btrace to debug
On Mon, Mar 21, 2022 at 12:09:54PM +, Miod Vallat wrote:
> The following diff makes {audio,midi,radio,video}_hw_if structs in the
> kernel const, in order to move them to rodata.
>
ok ratchov
On Mon, Mar 21, 2022 at 01:19:53PM +0100, Theo Buehler wrote:
> On Mon, Mar 21, 2022 at 12:24:33PM +0100, Claudio Jeker wrote:
> > During config reload the RIB may need to be resynced when the
> > 'no evaluate' setting changes.
> >
> > This changes the code to actually flush the Adj-RIB-Out of
On Mon, Mar 21, 2022 at 05:16:53PM +0100, Claudio Jeker wrote:
> In struct rib_entry bgpd keeps the 'best' or active prefix cached.
> Now to support more than one one prefix per path (for ECMP and add-path)
> I need the ability to access the previous element. The currently used
> LIST macros do
Miod Vallat wrote:
Absolutely this should be fixed.
> Shortly afterwards, in addition to fixing the overtrusting code, it was
> decided never to allow mmap(2) to allow address zero to get mapped, by
> never making VM_MIN_ADDRESS equal to zero (I actually argued for this
> change to only be
> Date: Mon, 21 Mar 2022 19:56:14 +
> From: Miod Vallat
>
> A long, long time ago (I think it was late 2003), OpenBSD/i386 was
> vulnerable to a trusted-yet-NULL pointer dereference in the agp code.
> The attack involved using mmap(2) with MAP_FIXED and a hint of zero.
>
> Shortly
Hello,
On Mon, Mar 21, 2022 at 04:53:12PM +0100, Alexander Bluhm wrote:
> Hi,
>
> syzkaller and witness found a bug in my pcb table mutex commit.
>
> https://syzkaller.appspot.com/bug?id=90a4811c99d6a2df7b252971b754612ca632894d
>
> For multicast and broadcast packets udp_input() traverses the
Hello,
there was a brief email discussion off-list between bluhm, mbuhl and me
preceding diff below. Let me briefly summarize a context for tech@ here.
Moritz (mbuhl) is working on a fix reported syzkaller by syzkaller [1].
In order to fix it he wants to move both locks (pf_lock and net_lock)
On 2022/03/20 19:51, Stuart Henderson wrote:
> On 2022/03/20 18:13, Stuart Henderson wrote:
> > On 2022/03/20 18:13, Solene Rapenne wrote:
> > > I'm proposing a very simple change to the automatic policy of the CPU
> > > frequency scheduler.
> > >
> > > Currently, every 100ms the scheduler is
A long, long time ago (I think it was late 2003), OpenBSD/i386 was
vulnerable to a trusted-yet-NULL pointer dereference in the agp code.
The attack involved using mmap(2) with MAP_FIXED and a hint of zero.
Shortly afterwards, in addition to fixing the overtrusting code, it was
decided never to
On Mon, Mar 21, 2022 at 05:51:36PM +0100, Theo Buehler wrote:
> On Mon, Mar 21, 2022 at 05:16:53PM +0100, Claudio Jeker wrote:
> > In struct rib_entry bgpd keeps the 'best' or active prefix cached.
> > Now to support more than one one prefix per path (for ECMP and add-path)
> > I need the ability
The riscv64 was likely copied from an architecture
providing optimized byte-swapping code (I'd bet arm64), but doesn't have
any such optimization, and copies the MI code.
Acknowledge this by dropping the __HAVE_MD_SWAP define to get the MI
code for free, rather than duplicating it.
Completely
The current state of the kernel starts userland processes with register
a0 pointing to the stack, with a comment mentioning this is copied from
FreeBSD.
But while FreeBSD userland startup code (lib/csu) depends on this,
OpenBSD binaries do not need this.
Thus, don't bother setting up a0 upon
Two simple changes here:
- dumpframe() is not used by anything. I opted to remove it, but it
could be wrapped in #if 0 or #ifdef DEBUG if people want to keep it
around.
- the /* NOTREACHED */ comment in sendsig() is obviously reachable, so
remove it and update the comment to match the new
Errata patches for slaacd have been released for OpenBSD 6.9 and
7.0.
Binary updates for the amd64, i386 and arm64 platform are available
via the syspatch utility. Source code patches can be found on the
respective errata page:
https://www.openbsd.org/errata69.html
Unlike userland, the OpenBSD kernel longjmp() function does not take a
return value for setjmp as second argument, but is guaranteed to return
nonzero.
The following diff makes sure the code matches this expectation.
Completely untested, yadda yadda.
Index: support.S
On Mon, Mar 21, 2022 at 08:03:40PM +, Miod Vallat wrote:
> Unlike userland, the OpenBSD kernel longjmp() function does not take a
> return value for setjmp as second argument, but is guaranteed to return
> nonzero.
>
> The following diff makes sure the code matches this expectation.
>
>
i couldnt find any good examples of what to do when you wanted to
receive multiple control messages from a single recvmsg call. the most
interesting bit is how much space the buffer needs to be.
if i struggled maybe someone else will too?
Index: CMSG_DATA.3
On Mon, Mar 21, 2022 at 08:00:56PM +, Miod Vallat wrote:
> The current state of the kernel starts userland processes with register
> a0 pointing to the stack, with a comment mentioning this is copied from
> FreeBSD.
>
> But while FreeBSD userland startup code (lib/csu) depends on this,
>
On Mon, Mar 21, 2022 at 08:24:05PM +, Miod Vallat wrote:
> Two simple changes here:
> - dumpframe() is not used by anything. I opted to remove it, but it
> could be wrapped in #if 0 or #ifdef DEBUG if people want to keep it
> around.
> - the /* NOTREACHED */ comment in sendsig() is
On Mon, Mar 21, 2022 at 07:51:25PM +, Miod Vallat wrote:
> The riscv64 was likely copied from an architecture
> providing optimized byte-swapping code (I'd bet arm64), but doesn't have
> any such optimization, and copies the MI code.
>
> Acknowledge this by dropping the __HAVE_MD_SWAP define
On Sun, Mar 20, 2022 at 05:00:13PM -0600, Thomas Frohwein wrote:
> I updated the diff for the controller with your diff. Below is the
> complete diff for all the files involved. I tested it again with my
> controller and sdl-jstest (in ports); it continues to work as intended.
>
> ok?
Thanks! Ok
are you trying to add an i2c device to the sensor framework? or are you asking
how to touch i2c devices from userland?
> On 21 Mar 2022, at 16:21, Dr. T.I.S. wrote:
>
> I know the rule, try to research first on man pages, openbsd.org, ect,
> and ask people as a last resort. Unfortunately, I
Hello, thank you for your reply!
I am trying to read data from an i2c sensor.
On Mon, Mar 21, 2022 at 2:53 AM David Gwynne wrote:
> are you trying to add an i2c device to the sensor framework? or are you
> asking how to touch i2c devices from userland?
>
> > On 21 Mar 2022, at 16:21, Dr.
I know the rule, try to research first on man pages, openbsd.org, ect,
and ask people as a last resort. Unfortunately, I have exhausted
all resources online that I could find. (I was recommend to use this
email list by OpenBSd dev on reddit)
Currently, I am trying to use I2C on the latest
This diff just renames F_CTL_ACTIVE and F_PREF_ACTIVE to the more correct
F_CTL_BEST and F_PREF_BEST. The flags are used to mark the one best path.
ACTIVE is not the right term here since with ECMP and add-path more than
one route can be active. I will probably add more flags to mark ECMP
On Mon, Mar 21, 2022 at 11:13:24AM +0100, Claudio Jeker wrote:
> On Mon, Mar 21, 2022 at 02:17:21PM +1000, David Gwynne wrote:
> > in_pcbselsrc has this:
> >
> > ifp = if_get(mopts->imo_ifidx);
> > if (ifp != NULL) {
> > if (ifp->if_rdomain ==
On Mon, Mar 21, 2022 at 10:56:03AM +0100, Claudio Jeker wrote:
> This diff just renames F_CTL_ACTIVE and F_PREF_ACTIVE to the more correct
> F_CTL_BEST and F_PREF_BEST. The flags are used to mark the one best path.
>
> ACTIVE is not the right term here since with ECMP and add-path more than
> one
On Mon, Mar 21, 2022 at 02:17:21PM +1000, David Gwynne wrote:
> in_pcbselsrc has this:
>
> ifp = if_get(mopts->imo_ifidx);
> if (ifp != NULL) {
> if (ifp->if_rdomain == rtable_l2(rtableid))
> IFP_TO_IA(ifp, ia);
>
During config reload the RIB may need to be resynced when the
'no evaluate' setting changes.
This changes the code to actually flush the Adj-RIB-Out of affected peers
and then adjust the RIB in a 2nd step. That way there is no need to use
rde_generate_updates() to remove the prefixes one by one
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