Re: possible deadlock in path_openat

2019-04-19 Thread syzbot
syzbot has found a reproducer for the following crash on: HEAD commit:3f018f4a Add linux-next specific files for 20190418 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=128f767b20 kernel config: https://syzkaller.appspot.com/x/.config?x=faa7bdc352fc1

Re: possible deadlock in path_openat

2019-04-19 Thread syzbot
syzbot has found a reproducer for the following crash on: HEAD commit:6d906f99 Merge tag 'arm64-fixes' of git://git.kernel.org/p.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10917b8f20 kernel config: https://syzkaller.appspot.com/x/.config?x=856fc6

Re: possible deadlock in path_openat

2018-09-27 Thread Amir Goldstein
On Thu, Sep 27, 2018 at 9:36 AM Miklos Szeredi wrote: > > On Thu, Sep 27, 2018 at 8:05 AM, Amir Goldstein wrote: > > > So this is interesting... if there is a file in overlayfs lower layer with > > the f_op read = seq_read then &p->lock in the chain above could be > > takes after ovl locks and th

Re: possible deadlock in path_openat

2018-09-26 Thread Miklos Szeredi
On Thu, Sep 27, 2018 at 8:05 AM, Amir Goldstein wrote: > So this is interesting... if there is a file in overlayfs lower layer with > the f_op read = seq_read then &p->lock in the chain above could be > takes after ovl locks and that is in reveres order to the order of locks > in execve on an ove

Re: possible deadlock in path_openat

2018-09-26 Thread Amir Goldstein
On Wed, Sep 26, 2018 at 7:33 AM Miklos Szeredi wrote: > > [Cc linux-unionfs] > > On Wed, Sep 26, 2018 at 1:44 AM, syzbot > wrote: > > Hello, > > > > syzbot found the following crash on: > > > > HEAD commit:2dd68cc7fd8c Merge gitolite.kernel.org:/pub/scm/linux/kern.. > > git tree: upstre

Re: possible deadlock in path_openat

2018-09-25 Thread Miklos Szeredi
[Cc linux-unionfs] On Wed, Sep 26, 2018 at 1:44 AM, syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit:2dd68cc7fd8c Merge gitolite.kernel.org:/pub/scm/linux/kern.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=111a60e64

possible deadlock in path_openat

2018-09-25 Thread syzbot
Hello, syzbot found the following crash on: HEAD commit:2dd68cc7fd8c Merge gitolite.kernel.org:/pub/scm/linux/kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=111a60e640 kernel config: https://syzkaller.appspot.com/x/.config?x=22a62640793a83c9 da