Re: possible deadlock in ovl_copy_up_start

2018-10-18 Thread Amir Goldstein
On Thu, Oct 18, 2018 at 11:41 AM Miklos Szeredi wrote: > > On Thu, Oct 18, 2018 at 8:26 AM, Amir Goldstein wrote: > > > Can someone tell me what the expected behavior of a nested > > mutex_lock_interruptible(); ? > > > > Why does the reproducer only warn and not really deadlock. > > It is

Re: possible deadlock in ovl_copy_up_start

2018-10-18 Thread Amir Goldstein
On Thu, Oct 18, 2018 at 11:41 AM Miklos Szeredi wrote: > > On Thu, Oct 18, 2018 at 8:26 AM, Amir Goldstein wrote: > > > Can someone tell me what the expected behavior of a nested > > mutex_lock_interruptible(); ? > > > > Why does the reproducer only warn and not really deadlock. > > It is

Re: possible deadlock in ovl_copy_up_start

2018-10-18 Thread Miklos Szeredi
On Thu, Oct 18, 2018 at 8:26 AM, Amir Goldstein wrote: > Can someone tell me what the expected behavior of a nested > mutex_lock_interruptible(); ? > > Why does the reproducer only warn and not really deadlock. > It is because that is considered the lesser evil? > and obviously, then inner

Re: possible deadlock in ovl_copy_up_start

2018-10-18 Thread Miklos Szeredi
On Thu, Oct 18, 2018 at 8:26 AM, Amir Goldstein wrote: > Can someone tell me what the expected behavior of a nested > mutex_lock_interruptible(); ? > > Why does the reproducer only warn and not really deadlock. > It is because that is considered the lesser evil? > and obviously, then inner

Re: possible deadlock in ovl_copy_up_start

2018-10-18 Thread Amir Goldstein
On Thu, Oct 18, 2018 at 7:48 AM syzbot wrote: > > Hello, > > syzbot found the following crash on: > > HEAD commit:c343db455eb3 Merge branch 'parisc-4.19-3' of git://git.ker.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=167d08ee40 > kernel config:

Re: possible deadlock in ovl_copy_up_start

2018-10-18 Thread Amir Goldstein
On Thu, Oct 18, 2018 at 7:48 AM syzbot wrote: > > Hello, > > syzbot found the following crash on: > > HEAD commit:c343db455eb3 Merge branch 'parisc-4.19-3' of git://git.ker.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=167d08ee40 > kernel config:

possible deadlock in ovl_copy_up_start

2018-10-17 Thread syzbot
Hello, syzbot found the following crash on: HEAD commit:c343db455eb3 Merge branch 'parisc-4.19-3' of git://git.ker.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=167d08ee40 kernel config: https://syzkaller.appspot.com/x/.config?x=b3f55cb3dfcc6c33

possible deadlock in ovl_copy_up_start

2018-10-17 Thread syzbot
Hello, syzbot found the following crash on: HEAD commit:c343db455eb3 Merge branch 'parisc-4.19-3' of git://git.ker.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=167d08ee40 kernel config: https://syzkaller.appspot.com/x/.config?x=b3f55cb3dfcc6c33