On Sat, Jul 10, 2021 at 11:46:13AM -0700, Andrew Morton wrote: > On Sat, 10 Jul 2021 19:29:29 +0800 qiang.zhang@xxxxxxxxxxxxx wrote: > > > From: Zqiang <qiang.zhang@xxxxxxxxxxxxx> > > > > The __alloc_pages_bulk() mainly used for batch allocation of > > order-0 pages, in the case of holding pagesets.lock, if too > > many pages are required, maybe trigger hard lockup watchdog. > > Ouch. Has this been observed in testing? If so, can you please share > the kernel debug output from that event? This should be fixed in the caller by asking for fewer pages. The NFS and vmalloc cases have already been fixed for this.
