On Fri, Nov 09, 2018 at 02:37:51PM +0000, Jan Glauber wrote: > I'm seeing the following oops reproducible with upstream kernel on arm64 > (ThunderX2): [...] > It happens after 1-3 hours of running 'stress-ng --dev 128'. This testcase > does a scandir of /dev and then calls random stuff like ioctl, lseek, > open/close etc. on the entries. I assume no files are deleted under /dev > during the testcase. > > The NULL pointer is the inode pointer of next. The next dentry->d_flags is > DCACHE_RCUACCESS when this happens. > > Any hints on how to further debug this? Can you reproduce the issue with vanilla -rc1 and do you have a "known good" kernel? Will