On Fri, 5 Jan 2018, Xishi Qiu wrote:
> I run the latest RHEL 7.2 with the KAISER/KPTI patch, and boot failed.
>
> ...
> [ 0.000000] PM: Registered nosave memory: [mem 0x81000000000-0x8ffffffffff]
> [ 0.000000] PM: Registered nosave memory: [mem 0x91000000000-0xfffffffffff]
> [ 0.000000] PM: Registered nosave memory: [mem
> 0x101000000000-0x10ffffffffff]
> [ 0.000000] PM: Registered nosave memory: [mem
> 0x111000000000-0x17ffffffffff]
> [ 0.000000] PM: Regitered nosave memory: [mem
> 0x181000000000-0x18ffffffffff]
> [ 0.000000] e820: [mem 0x90000000-0xfed1bfff] available for PCI devices
> [ 0.000000] Booting paravirtualized kernel on bare hardware
> [ 0.000000] setup_percpu: NR_CPUS:5120 nr_cpumask_bits:1536
> nr_cpu_ids:1536 nr_node_ids:8
> [ 0.000000] PERCPU: max_distance=0x180ffe240000 too large for vmalloc
> space 0x1fffffffffff
> [ 0.000000] setup_percpu: auto allocator failed (-22), falling back to
> page size
> [ 0.000000] PERCPU: 32 4K pages/cpu @ffffc90000000000 s107200 r8192 d15680
> [ 0.000000] Built 8 zonelists in Zone order, mobility grouping on. Total
> pages: 132001804
> [ 0.000000] Policy zone: Normal
> iosdevname=0 8250.nr_uarts=8 efi=old_map rdloaddriver=usb_storage
> rdloaddriver=sd_mod udev.event-timeout=600 softlockup_panic=0
> rcupdate.rcu_cpu_stall_timeout=300
> [ 0.000000] Intel-IOMMU: enabled
> [ 0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
> [ 0.000000] x86/fpu: xstate_offset[2]: 0240, xstate_sizes[2]: 0100
> [ 0.000000] xsave: enabled xstate_bv 0x7, cntxt size 0x340
> [ 0.000000] AGP: Checking aperture...
> [ 0.000000] AGP: No AGP bridge found
> [ 0.000000] Memory: 526901612k/26910638080k available (6528k kernel code,
> 26374249692k absent, 9486776k reserved, 4302k data, 1676k init)
> [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1536, Nodes=8
> [ 0.000000] x86/pti: Unmapping kernel while in userspace
> [ 0.000000] Hierarchical RCU implementation.
> [ 0.000000] RCU restricting CPUs from NR_CPUS=5120 to
> nr_cpu_ids=1536.
> [ 0.000000] Offload RCU callbacks from all CPUs
> [ 0.000000] Offload RCU callbacks from CPUs: 0-1535.
> [ 0.000000] NR_IRQS:327936 nr_irqs:15976 0
> [ 0.000000] Console: colour dummy device 80x25
> [ 0.000000] console [tty0] enabled
> [ 0.000000] console [ttyS0] enabled
> [ 0.000000] allocated 2145910784 bytes of page_cgroup
> [ 0.000000] please try 'cgroup_disable=memory' option if you don't want
> memory cgroups
> [ 0.000000] Enabling automatic NUMA balancing. Configure with
> numa_balancing= or the kernel.numa_balancing sysctl
> [ 0.000000] tsc: Fast TSC calibration using PIT
> [ 0.000000] tsc: Detected 2799.999 MHz processor
> [ 0.001803] Calibrating delay loop (skipped), value calculated using timer
> frequency.. 5599.99 BogoMIPS (lpj=2799999)
> [ 0.012408] pid_max: default: 1572864 minimum: 12288
> [ 0.017987] init_memory_mapping: [mem 0x5947f000-0x5b47efff]
> [ 0.023701] init_memory_mapping: [mem 0x5b47f000-0x5b87efff]
> [ 0.029369] init_memory_mapping: [mem 0x6d368000-0x6d3edfff]
> [ 0.039130] BUG: unable to handle kernel paging request at 000000005b835f90
> [ 0.046101] IP: [<000000005b835f90>] 0x5b835f8f
> [ 0.050637] PGD 8000000001f61067 PUD 190ffefff067 PMD 190ffeffd067 PTE
> 5b835063
> [ 0.057989] Oops: 0011 [#1] SMP
> [ 0.061241] Modules linked in:
> [ 0.064304] CPU: 0 PID: 0 Comm: swapper/0 Not tainted
> 3.10.0-327.59.59.46.h42.x86_64 #1
> [ 0.072280] Hardware name: Huawei FusionServer9032/IT91SMUB, BIOS BLXSV316
> 11/14/2017
> [ 0.080082] task: ffffffff8196e440 ti: ffffffff81958000 task.ti:
> ffffffff81958000
> [ 0.087539] RIP: 0010:[<000000005b835f90>] [<000000005b835f90>] 0x5b835f8f
> [ 0.094494] RSP: 0000:ffffffff8195be28 EFLAGS: 00010046
> [ 0.099788] RAX: 0000000080050033 RBX: ffff910fbc802000 RCX:
> 00000000000002d0
> [ 0.106897] RDX: 0000000000000030 RSI: 00000000000002d0 RDI:
> 000000005b835f90
> [ 0.114006] RBP: ffffffff8195bf38 R08: 0000000000000001 R09:
> 0000090fbc802000
> [ 0.121116] R10: ffff88ffbcc07340 R11: 0000000000000001 R12:
> 0000000000000001
> [ 0.128225] R13: 0000090fbc802000 R14: 00000000000002d0 R15:
> 0000000000000001
> [ 0.135336] FS: 0000000000000000(0000) GS:ffffc90000000000(0000)
> knlGS:0000000000000000
> [ 0.143398] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 0.149124] CR2: 000000005b835f90 CR3: 0000000001966000 CR4:
> 00000000000606b0
> [ 0.156234] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
> 0000000000000000
> [ 0.163344] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
> 0000000000000400
> [ 0.170454] Call Trace:
> [ 0.172899] [<ffffffff8107512c>] ? efi_call4+0x6c/0xf0
EFI old memmap have NX bit set. Immediate workaround is remove that
cmdline parameter. I have also submitted proposed fix here:
http://lkml.kernel.org/r/alpine.lrh.2.00.1801051909160.27...@gjva.wvxbf.pm
--
Jiri Kosina
SUSE Labs
