Re: BUG: WARNING in kvfree_rcu_bulk

2024-09-16 Thread Uladzislau Rezki
> After several tests, I found that the same PoC can cause multiple > different crashes for some unknown reason. Thus, I suspect that the > bug is capable of performing unintended memory writing without being > caught by KASAN. > I tested the PoC on the latest kernel, Linux 6.11 rc7 and it can stil

Re: BUG: WARNING in kvfree_rcu_bulk

2024-09-15 Thread Juefei Pu
After several tests, I found that the same PoC can cause multiple different crashes for some unknown reason. Thus, I suspect that the bug is capable of performing unintended memory writing without being caught by KASAN. I tested the PoC on the latest kernel, Linux 6.11 rc7 and it can still cause cr

Re: BUG: WARNING in kvfree_rcu_bulk

2024-09-15 Thread Xingyu Li
Juefei will answer this. I already Cc'd him. On Thu, Sep 12, 2024 at 9:08 AM Uladzislau Rezki wrote: > > > > > > > > > Here is the config file: > > > > https://gist.github.com/TomAPU/64f5db0fe976a3e94a6dd2b621887cdd > > > > > I tested your "reproducer" on 6.11.0-rc2. I see some panics and they a

Re: BUG: WARNING in kvfree_rcu_bulk

2024-09-12 Thread Uladzislau Rezki
> > > > > > Here is the config file: > > > https://gist.github.com/TomAPU/64f5db0fe976a3e94a6dd2b621887cdd > > > I tested your "reproducer" on 6.11.0-rc2. I see some panics and they are different. For example below one triggers: BUG: kernel NULL pointer dereference, address: 0010 Lin

Re: BUG: WARNING in kvfree_rcu_bulk

2024-09-04 Thread Xingyu Li
Here is to set up the reproducing environment: https://github.com/TomAPU/Linux610BugReort We tested it, and it can reproduce. On Wed, Sep 4, 2024 at 10:52 AM Uladzislau Rezki wrote: > > Hello! > > > > > Here is the config file: > > https://gist.github.com/TomAPU/64f5db0fe976a3e94a6dd2b621887cdd >

Re: BUG: WARNING in kvfree_rcu_bulk

2024-09-04 Thread Uladzislau Rezki
Hello! > > Here is the config file: > https://gist.github.com/TomAPU/64f5db0fe976a3e94a6dd2b621887cdd > Thank you. I was not able to boot my box using your config file. But i enabled all needed configs in to run your reproduce so it does not complain on below warnings: urezki@pc638:~$ sudo ./a.