On 19/09/16 15:07, Mark Rutland wrote: > On Mon, Sep 19, 2016 at 09:05:26PM +0800, Yisheng Xie wrote: >> For the crash log, it seems caused by error number of cpumask. >> Any ideas about it? > Much earlier in your log, there was a (non-fatal) warning, as below. Do > you see this without NUMA/SRAT enabled in your FW? >> [ 0.297337] Detected PIPT I-cache on CPU1 >> [ 0.297347] GICv3: CPU1: found redistributor 10001 region 1:0x000000004d140000 >> [ 0.297356] CPU1: Booted secondary processor [410fd082] >> [ 0.297375] ------------[ cut here ]------------ >> [ 0.320390] WARNING: CPU: 1 PID: 0 at ./include/linux/cpumask.h:121 gic_raise_softirq+0x128/0x17c >> [ 0.329356] Modules linked in: >> [ 0.332434] >> [ 0.333932] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.8.0-rc4-00163-g803ea3a #21 >> [ 0.341581] Hardware name: Hisilicon Hi1616 Evaluation Board (DT) >> [ 0.347735] task: ffff8013e9dd0000 task.stack: ffff8013e9dcc000 >> [ 0.353714] PC is at gic_raise_softirq+0x128/0x17c >> [ 0.358550] LR is at gic_raise_softirq+0xa0/0x17c I've seen this first trace when built with DEBUG_PER_CPU_MAPS. My version of this trace[0] was just noise due to gic_compute_target_list() and gic_raise_softirq() sharing an iterator. This patch silenced it for me: https://lkml.org/lkml/2016/9/19/623 Yours may be a different problem with the same symptom. Thanks, James [0] gicv3 trace when built with DEBUG_PER_CPU_MAPS [ 3.077738] GICv3: CPU1: found redistributor 1 region 0:0x000000002f120000 [ 3.077943] CPU1: Booted secondary processor [410fd0f0] [ 3.078542] ------------[ cut here ]------------ [ 3.078746] WARNING: CPU: 1 PID: 0 at ../include/linux/cpumask.h:121 gic_raise_softirq+0x12c/0x170 [ 3.078812] Modules linked in: [ 3.078869] [ 3.078930] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.8.0-rc5+ #5188 [ 3.078994] Hardware name: Foundation-v8A (DT) [ 3.079059] task: ffff80087a1a0080 task.stack: ffff80087a19c000 [ 3.079145] PC is at gic_raise_softirq+0x12c/0x170 [ 3.079226] LR is at gic_raise_softirq+0xa4/0x170 -- 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>