Hi, A PowerPC KVM guest gets the following BUG message when booting linux-next-20210623: smp: Bringing up secondary CPUs ... BUG: scheduling while atomic: swapper/1/0/0x00000000 no locks held by swapper/1/0. Modules linked in: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.13.0-rc7-next-20210623 Call Trace: [c00000000ae5bc20] [c000000000badc64] dump_stack_lvl+0x98/0xe0 (unreliable) [c00000000ae5bc60] [c000000000210200] __schedule_bug+0xb0/0xe0 [c00000000ae5bcd0] [c000000001609e28] __schedule+0x1788/0x1c70 [c00000000ae5be20] [c00000000160a8cc] schedule_idle+0x3c/0x70 [c00000000ae5be50] [c00000000022984c] do_idle+0x2bc/0x420 [c00000000ae5bf00] [c000000000229d88] cpu_startup_entry+0x38/0x40 [c00000000ae5bf30] [c0000000000666c0] start_secondary+0x290/0x2a0 [c00000000ae5bf90] [c00000000000be54] start_secondary_prolog+0x10/0x14 <The above repeats for all the secondary CPUs> smp: Brought up 2 nodes, 16 CPUs numa: Node 0 CPUs: 0-7 numa: Node 1 CPUs: 8-15 This seems to have started from next-20210521 and isn't seen on next-20210511. Regards, Bharata.
