On 2016/3/4 18:45, Tetsuo Handa wrote: > On 2016/03/04 17:36, zhong jiang wrote: >> The vmcore file show the collapse reason that the page had been removed >> when we acqure the page and prepare to remove the page from the slub >> partial list. >> >> The list is protected by the spin_lock from concurrent operation. And I find >> that other core is wating the lock to alloc memory. Therefore , The concurrent >> access should be impossible. >> >> what situatios can happen ? or it is a kernel bug potentially. This question >> almost impossible to produce again. The following is the call statck belonging to >> the module. > No kernel version, no clue. > > > Sorry, The kernel version is 3.4 stable version. And The mainline , by comparison, have no relative modification. Thanks zhongjiang -- 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/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>