Symptom

Catalyst 9000 switch might crash due to Non Maskable Interrupt (NMI) [ 351.826430] Uhhuh. NMI received for unknown reason 2d on CPU 0. [ 351.826431] Do you have a strange power saving mode enabled? [ 351.826432] Kernel panic - not syncing: NMI: Not continuing [ 351.826433] CPU: 0 PID: 0 Comm: swapper/0 Kdump: loaded Tainted: G O 4.19.157 #1 [ 351.826434] Hardware name: Insyde Grangeville/Type2 - Board Product Name1, BIOS 05.05.15.0026 06/23/2016 [ 351.826434] Call Trace: [ 351.826434] [ 351.826435] dump_stack+0x50/0x70 [ 351.826435] panic+0xe1/0x22f [ 351.826436] ? printk+0x58/0x6f [ 351.826436] nmi_panic.cold.5+0xc/0xc [ 351.826437] unknown_nmi_error+0x6f/0x80 [ 351.826437] do_nmi+0xf4/0x140 [ 351.826437] end_repeat_nmi+0x16/0x50 [ 351.826438] RIP: 0010:mwait_idle+0x8c/0x1d0 [ 351.826439] Code: 4c 01 00 48 89 d1 0f 01 c8 48 8b 00 a8 08 75 47 8b 05 50 ac e0 00 85 c0 7e 07 0f 00 2d 6f e7 4f 00 31 c0 48 89 c1 fb 0f 01 c9 8b 2d 0d 91 70 5d 8b 05 1f 57 9c 00 85 c0 0f 8f 9c 00 00 00 65 [ 351.826439] RSP: 0018:ffffffffa3203e90 EFLAGS: 00000246 [ 351.826441] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 351.826441] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 351.826442] RBP: 0000000000000000 R08: 000000000002244a R09: 00000000000000f4 [ 351.826442] R10: 00000000fffffff0 R11: 0000000000022400 R12: 0000000000000000 [ 351.826443] R13: 0000000000000000 R14: 000000009a30dd60 R15: 0000000000000020 [ 351.826443] ? mwait_idle+0x8c/0x1d0 [ 351.826443] ? mwait_idle+0x8c/0x1d0 [ 351.826444] [ 351.826444] do_idle+0x1a1/0x1c0 [ 351.826444] cpu_startup_entry+0x6f/0x80 [ 351.826445] start_kernel+0x487/0x4aa [ 351.826445] secondary_startup_64+0xa4/0xb0

Conditions

Workaround

No known workaround.

Further Problem Description