On Sat, Dec 3, 2011 at 1:19 PM, Stijn Devriendt <highguy@xxxxxxxxx> wrote: > Hi all, > > I've had 2 occasions where udev crashed during bootup. > The second time carried a kernel log where the following line > "BUG_ON(!list_empty(&entry->d_alias))" > in d_instantiate is triggered when udev is attempting to > create a symlink in /dev (which is tmpfs/shmem). > > I've tried reproducing this by doing as udev does: > - create temporary symlink > - move temporary symlink into place > in a tight loop (multiple processes) while multiple > other processes were removing the symlink in a > tight loop. > A third script was flushing the dentry/inode cache > every so often using drop_caches. > All to no avail. > > I've been digging around in the kernel sources, > but I'm not sure what the d_alias field means > and what the actual case is the BUG_ON is > meant to catch. I'd like to be able to find a way > to reproduce this, because so far it's happened only > twice in 2 weeks over multiple systems doing > many reboots in a testing setup. > Can someone explain this to me in short? > > Thanks, > Stijn Trying resend... Stijn -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>