Re: NULL pointer dereference in xenbus_thread->...

2025-05-03 Thread Jason Andryuk
On Wed, Apr 30, 2025 at 11:44 AM Jürgen Groß wrote: > I have looked at this issue multiple times now. > > Just some remarks what IMO could go wrong (I didn't find any proof that > this really happened, though), in case someone wants to double check: > > The most probably candidate for something go

Re: NULL pointer dereference in xenbus_thread->...

2025-05-03 Thread Jason Andryuk
On Thu, May 1, 2025 at 8:01 PM Marek Marczykowski-Górecki wrote: > > I'm curious what process_msg+0x18e/0x2f0 is. process_writes() has a > > direct call to wake_up(), but process_msg() calling req->cb(req) may > > be xs_wake_up() which is a thin wrapper over wake_up(). > > So, it's req->cb(req).

Re: NULL pointer dereference in xenbus_thread->...

2025-05-01 Thread Marek Marczykowski-Górecki
On Tue, Apr 29, 2025 at 08:59:45PM -0400, Jason Andryuk wrote: > Hi Marek, > > On Wed, Apr 23, 2025 at 8:42 AM Marek Marczykowski-Górecki > wrote: > > > > On Sat, Jun 01, 2024 at 12:48:33AM +0200, Marek Marczykowski-Górecki wrote: > > > On Tue, Mar 26, 2024 at 11:00:50AM +, Julien Grall wrote

Re: NULL pointer dereference in xenbus_thread->...

2025-04-30 Thread Jürgen Groß
On 30.04.25 16:29, Jason Andryuk wrote: On 2025-04-30 06:56, Marek Marczykowski-Górecki wrote: On Tue, Apr 29, 2025 at 08:59:45PM -0400, Jason Andryuk wrote: Hi Marek, On Wed, Apr 23, 2025 at 8:42 AM Marek Marczykowski-Górecki wrote: I've got some more report confirming it's still happenin

Re: NULL pointer dereference in xenbus_thread->...

2025-04-30 Thread Jason Andryuk
On 2025-04-30 06:56, Marek Marczykowski-Górecki wrote: On Tue, Apr 29, 2025 at 08:59:45PM -0400, Jason Andryuk wrote: Hi Marek, On Wed, Apr 23, 2025 at 8:42 AM Marek Marczykowski-Górecki wrote: I've got some more report confirming it's still happening on Linux 6.12.18. Is there anything I c

Re: NULL pointer dereference in xenbus_thread->...

2025-04-30 Thread Marek Marczykowski-Górecki
On Tue, Apr 29, 2025 at 08:59:45PM -0400, Jason Andryuk wrote: > Hi Marek, > > On Wed, Apr 23, 2025 at 8:42 AM Marek Marczykowski-Górecki > wrote: > > > > On Sat, Jun 01, 2024 at 12:48:33AM +0200, Marek Marczykowski-Górecki wrote: > > > On Tue, Mar 26, 2024 at 11:00:50AM +, Julien Grall wrote

Re: NULL pointer dereference in xenbus_thread->...

2025-04-29 Thread Jason Andryuk
Hi Marek, On Wed, Apr 23, 2025 at 8:42 AM Marek Marczykowski-Górecki wrote: > > On Sat, Jun 01, 2024 at 12:48:33AM +0200, Marek Marczykowski-Górecki wrote: > > On Tue, Mar 26, 2024 at 11:00:50AM +, Julien Grall wrote: > > > Hi Marek, > > > > > > +Juergen for visibility > > > > > > When sendin

Re: NULL pointer dereference in xenbus_thread->...

2025-04-23 Thread Marek Marczykowski-Górecki
On Sat, Jun 01, 2024 at 12:48:33AM +0200, Marek Marczykowski-Górecki wrote: > On Tue, Mar 26, 2024 at 11:00:50AM +, Julien Grall wrote: > > Hi Marek, > > > > +Juergen for visibility > > > > When sending a bug report, I would suggest to CC relevant people as > > otherwise it can get lost (not

Re: NULL pointer dereference in xenbus_thread->...

2024-05-31 Thread Marek Marczykowski-Górecki
On Tue, Mar 26, 2024 at 11:00:50AM +, Julien Grall wrote: > Hi Marek, > > +Juergen for visibility > > When sending a bug report, I would suggest to CC relevant people as > otherwise it can get lost (not may people monitors Xen devel if they are not > CCed). > > Cheers, > > On 25/03/2024 16:

Re: NULL pointer dereference in xenbus_thread->...

2024-03-26 Thread Julien Grall
Hi Marek, +Juergen for visibility When sending a bug report, I would suggest to CC relevant people as otherwise it can get lost (not may people monitors Xen devel if they are not CCed). Cheers, On 25/03/2024 16:17, Marek Marczykowski-Górecki wrote: On Sun, Oct 22, 2023 at 04:14:30PM +0200,

Re: NULL pointer dereference in xenbus_thread->...

2024-03-25 Thread Marek Marczykowski-Górecki
On Sun, Oct 22, 2023 at 04:14:30PM +0200, Marek Marczykowski-Górecki wrote: > On Mon, Aug 28, 2023 at 11:50:36PM +0200, Marek Marczykowski-Górecki wrote: > > Hi, > > > > I've noticed in Qubes's CI failure like this: > > > > [ 871.271292] BUG: kernel NULL pointer dereference, address: > > 00

Re: NULL pointer dereference in xenbus_thread->...

2023-10-22 Thread Marek Marczykowski-Górecki
On Mon, Aug 28, 2023 at 11:50:36PM +0200, Marek Marczykowski-Górecki wrote: > Hi, > > I've noticed in Qubes's CI failure like this: > > [ 871.271292] BUG: kernel NULL pointer dereference, address: > [ 871.275290] #PF: supervisor read access in kernel mode > [ 871.277282] #PF: