I hoped, this patch would fix the efi issue: https://lkml.org/lkml/2018/1/5/534 But, unfortunatly it does not. I got a partial panic message this time: [ 4.737578] usb 1-1: new high-speed USB device number 2 using ehci-pci [ 4.846712] BUG: unable to handle kernel paging request at 0000000000017e10 [ 4.854509] IP: [<ffffffff810ce77e>] native_queued_spin_lock_slowpath+0xfe/0x170 [ 4.862780] PGD 0 [ 4.865034] Oops: 0002 [#1] SMP [ 4.868657] Modules linked in: [ 4.872075] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.4.110_pt_linux-v4.4.110 #3 [ 4.880526] Hardware name: Oracle Corporation ORACLE SERVER X6-2/ASM,MOTHERBOARD,1U, BIOS 38050100 08/30/2016 [ 4.891596] task: ffffffff81aab500 ti: ffffffff81a98000 task.ti: ffffffff81a98000 [ 4.899950] RIP: 0010:[<ffffffff810ce77e>] [<ffffffff810ce77e>] native_queued_spin_lock_slowpath+0xfe/0x170 [ 4.910936] RSP: 0000:ffff881fff803c88 EFLAGS: 00010002 [ 4.916865] RAX: 000000000000206b RBX: ffff88407e611900 RCX: ffff881fff817e00 [ 4.924831] RDX: 0000000000017e10 RSI: 0000000000040000 RDI: ffff88407e611a58 [ 4.932797] RBP: ffff881fff803c88 R08: 0000000000000101 R09: 0000000000000000 [ 4.940764] R10: 000000005c96d000 R11: ffff88005c96d0c0 R12: ffff881ff25e52c8 [ 4.948730] R13: ffff88407e6d1900 R14: ffff881fff8118c0 R15: ffff88407e6118c0 [ 4.956696] FS: 0000000000000000(0000) GS:ffff881fff800000(0000) knlGS:0000000000000000 [ 4.965727] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 4.972140] CR2: 0000000000017e10 CR3: 0000000001aa2000 CR4: 00000000003606 On Fri, Jan 5, 2018 at 1:21 PM, Pavel Tatashin <pasha.tatashin@xxxxxxxxxx> wrote: >> Pavel, can you send your /proc/cpuinfo on a noefi boot? (Just the >> first CPU worth is fine.) > > With noefi option: > > [root@ca-ostest441 ~]# more /proc/cpuinfo > processor : 0 > vendor_id : GenuineIntel > cpu family : 6 > model : 79 > model name : Intel(R) Xeon(R) CPU E5-2630 v4 @ 2.20GHz > stepping : 1 > microcode : 0xb00001d > cpu MHz : 1971.406 > cache size : 25600 KB > physical id : 0 > siblings : 20 > core id : 0 > cpu cores : 10 > apicid : 0 > initial apicid : 0 > fpu : yes > fpu_exception : yes > cpuid level : 20 > wp : yes > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov > pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdt > scp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc ap > erfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg > fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_time > r aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb invpcid_singl > e pln pts dtherm intel_pt kaiser tpr_shadow vnmi flexpriority ept vpid fsgsbase > tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdseed adx smap xsaveopt > cqm_llc cqm_occup_llc > bugs : > bogomips : 4390.08 > clflush size : 64 > cache_alignment : 64 > address sizes : 46 bits physical, 48 bits virtual > power management: