Re: “KASAN: null-ptr-deref Write in event_handler” and "KASAN: null-ptr-deref Write in vhci_shutdown_connection" should share the same root cause.

2021-01-19 Thread Greg KH
On Wed, Jan 20, 2021 at 11:22:11AM +0800, 慕冬亮 wrote: > Dear kernel developers, > > I found that on the syzbot dashboard, “KASAN: null-ptr-deref Write in > event_handler”[1] and > "KASAN: null-ptr-deref Write in vhci_shutdown_connection" () should > share the same root cause. > > > The reasons fo

Re: KASAN: null-ptr-deref Write in event_handler

2020-10-19 Thread Shuah Khan
On 10/19/20 9:10 AM, Andrey Konovalov wrote: On Fri, Oct 16, 2020 at 9:48 PM Shuah Khan wrote: Andrey, I am unable to reproduce the problem. I even tweaked the reproducer to launch 10 procs and 100 threads. Can you test the following patch with your setup Here it is - also attached. Hi Sh

Re: KASAN: null-ptr-deref Write in event_handler

2020-10-19 Thread Andrey Konovalov
On Fri, Oct 16, 2020 at 9:48 PM Shuah Khan wrote: > > Andrey, > > I am unable to reproduce the problem. I even tweaked the reproducer > to launch 10 procs and 100 threads. > > Can you test the following patch with your setup > > Here it is - also attached. Hi Shuah, I get the crash below with th

Re: KASAN: null-ptr-deref Write in event_handler

2020-10-16 Thread Shuah Khan
On 10/7/20 9:48 AM, Shuah Khan wrote: On 10/7/20 8:28 AM, Andrey Konovalov wrote: On Wed, Oct 7, 2020 at 3:56 PM Shuah Khan wrote: [snip] Hi Andrey, I have been unable to reproduce the problem with the reproducer so far. You mentioned it happens quite often. - matched config with yours

Re: KASAN: null-ptr-deref Write in event_handler

2020-10-09 Thread Shuah Khan
On 10/7/20 4:30 AM, Hillf Danton wrote: Mon, 05 Oct 2020 06:59:19 syzbot found the following issue on: HEAD commit:d3d45f82 Merge tag 'pinctrl-v5.9-2' of git://git.kernel.or.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15781d8f90 kernel config:

Re: KASAN: null-ptr-deref Write in event_handler

2020-10-07 Thread Shuah Khan
On 10/7/20 8:28 AM, Andrey Konovalov wrote: On Wed, Oct 7, 2020 at 3:56 PM Shuah Khan wrote: On 10/5/20 2:44 PM, Shuah Khan wrote: On 10/5/20 8:04 AM, Andrey Konovalov wrote: On Mon, Oct 5, 2020 at 3:59 PM syzbot wrote: Hello, syzbot found the following issue on: HEAD commit:d3d45f8

Re: KASAN: null-ptr-deref Write in event_handler

2020-10-07 Thread Andrey Konovalov
On Wed, Oct 7, 2020 at 3:56 PM Shuah Khan wrote: > > On 10/5/20 2:44 PM, Shuah Khan wrote: > > On 10/5/20 8:04 AM, Andrey Konovalov wrote: > >> On Mon, Oct 5, 2020 at 3:59 PM syzbot > >> wrote: > >>> > >>> Hello, > >>> > >>> syzbot found the following issue on: > >>> > >>> HEAD commit:d3d45f8

Re: KASAN: null-ptr-deref Write in event_handler

2020-10-07 Thread Shuah Khan
On 10/5/20 2:44 PM, Shuah Khan wrote: On 10/5/20 8:04 AM, Andrey Konovalov wrote: On Mon, Oct 5, 2020 at 3:59 PM syzbot wrote: Hello, syzbot found the following issue on: HEAD commit:    d3d45f82 Merge tag 'pinctrl-v5.9-2' of git://git.kernel.or.. git tree:   upstream console output:

Re: KASAN: null-ptr-deref Write in event_handler

2020-10-05 Thread Shuah Khan
On 10/5/20 8:04 AM, Andrey Konovalov wrote: On Mon, Oct 5, 2020 at 3:59 PM syzbot wrote: Hello, syzbot found the following issue on: HEAD commit:d3d45f82 Merge tag 'pinctrl-v5.9-2' of git://git.kernel.or.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x

Re: KASAN: null-ptr-deref Write in event_handler

2020-10-05 Thread Andrey Konovalov
On Mon, Oct 5, 2020 at 3:59 PM syzbot wrote: > > Hello, > > syzbot found the following issue on: > > HEAD commit:d3d45f82 Merge tag 'pinctrl-v5.9-2' of git://git.kernel.or.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=15781d8f90 > kernel config: