On 2018/1/6 2:33, Jiri Kosina wrote: > 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.2.00.1801051909160.27010@xxxxxxxxxxxxx > Hi Jiri, Your patch fix the boot problem from efi, thanks. I have another problem during reboot, it seems the same cause(NX flag). How about this fix patch? I tested and it works. diff --git a/arch/x86/kernel/tboot.c b/arch/x86/kernel/tboot.c index 088681d..f6c32f5 100644 --- a/arch/x86/kernel/tboot.c +++ b/arch/x86/kernel/tboot.c @@ -131,6 +131,8 @@ static int map_tboot_page(unsigned long vaddr, unsigned long pfn, pud = pud_alloc(&tboot_mm, pgd, vaddr); if (!pud) return -1; + if (__supported_pte_mask & _PAGE_NX) + pgd->pgd &= ~_PAGE_NX; pmd = pmd_alloc(&tboot_mm, pud, vaddr); if (!pmd) return -1; Here is the failed log. ... [ 1911.622675] BUG: unable to handle kernel paging request at 00000000008041c0 [ 1911.629880] IP: [<00000000008041c0>] 0x8041bf [ 1911.634389] PGD 80000010272cb067 PUD 2025178067 PMD 10272d8067 PTE 804063 [ 1911.641472] Oops: 0011 [#1] SMP [ 1911.644847] oom or die happens after reboot! last event=0x24, last cpu=0. [ 1911.651833] event maps(bit5-bit0): die-oom-intermit-reboot-emerge-panic [ 1911.660868] collected_len = 100273, LOG_BUF_LEN_LOCAL = 1048576 [ 1911.698656] kbox: notify die begin [ 1911.702156] kbox: no notify die func register. no need to notify [ 1911.708336] do nothing after die! [ 1911.711748] Modules linked in: bum(O) ip_set nfnetlink prio(O) nat(O) vport_vxlan(O) openvswitch(O) nf_defrag_ipv6 gre kboxdriver(O) kbox(O) signo_catch(O) vfat fat tg3 intel_powerclamp coretemp intel_rapl crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel i2c_i801 kvm_intel(O) ptp lrw gf128mul i2c_core glue_helper ablk_helper pps_core kvm(O) cryptd iTCO_wdt iTCO_vendor_support sg pcspkr lpc_ich mfd_core sb_edac mei_me edac_core mei shpchp acpi_power_meter acpi_pad remote_trigger(O) nf_conntrack_ipv4 nf_defrag_ipv4 vhost_net(O) tun(O) vhost(O) macvtap macvlan vfio_pci irqbypass vfio_iommu_type1 vfio xt_sctp nf_conntrack_proto_sctp nf_nat_proto_sctp nf_nat nf_conntrack sctp libcrc32c ip_tables ext3 mbcache jbd sr_mod sd_mod cdrom lpfc crc_t10dif ahci crct10dif_generic crct10dif_pclmul libahci scsi_transport_fc scsi_tgt crct10dif_common libata usb_storage megaraid_sas dm_mod [last unloaded: dev_connlimit] [ 1911.796711] CPU: 0 PID: 12033 Comm: reboot Tainted: G OE ---- ------- 3.10.0-327.61.59.66_22.x86_64 #1 [ 1911.807449] Hardware name: Huawei RH2288H V3/BC11HGSA0, BIOS 3.79 11/07/2017 [ 1911.814702] task: ffff881025a91700 ti: ffff8810267fc000 task.ti: ffff8810267fc000 [ 1911.822401] RIP: 0010:[<00000000008041c0>] [<00000000008041c0>] 0x8041bf [ 1911.829407] RSP: 0018:ffff8810267ffd50 EFLAGS: 00010086 [ 1911.834877] RAX: 00000000008041c0 RBX: 0000000000000000 RCX: ffffffffff425000 [ 1911.842220] RDX: ffff8820a4e40000 RSI: 000000000000c000 RDI: 0000002024e40000 [ 1911.849563] RBP: ffff8810267ffd60 R08: ffff882024e40000 R09: 0000000000000000 [ 1911.856908] R10: ffffffff81a8f300 R11: ffff8810267ffaae R12: 0000000028121969 [ 1911.864250] R13: ffffffff819aa8a0 R14: 0000000000000cf9 R15: 0000000000000000 [ 1911.871596] FS: 00007f89d6143880(0000) GS:ffff881040400000(0000) knlGS:0000000000000000 [ 1911.879921] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1911.885836] CR2: 00000000008041c0 CR3: 0000002024e40000 CR4: 00000000001607f0 [ 1911.893180] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1911.900522] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 1911.907863] Call Trace: [ 1911.910384] [<ffffffff810241ab>] ? tboot_shutdown+0x5b/0x140 [ 1911.916298] [<ffffffff8104723c>] native_machine_emergency_restart+0x4c/0x250 [ 1911.923641] [<ffffffff8104c102>] ? disconnect_bsp_APIC+0x82/0xc0 [ 1911.929913] [<ffffffff81046e17>] native_machine_restart+0x37/0x40 [ 1911.936273] [<ffffffff810470ef>] machine_restart+0xf/0x20 [ 1911.941923] [<ffffffff8109af95>] kernel_restart+0x45/0x60 [ 1911.947570] [<ffffffff8109b1d9>] SYSC_reboot+0x229/0x260 [ 1911.953132] [<ffffffff811ef665>] ? vfs_writev+0x35/0x60 [ 1911.958603] [<ffffffff8109b27e>] SyS_reboot+0xe/0x10 [ 1911.963806] [<ffffffff8165e43d>] system_call_fastpath+0x16/0x1b [ 1911.969987] Code: Bad RIP value. [ 1911.973448] RIP [<00000000008041c0>] 0x8041bf [ 1911.978044] RSP <ffff8810267ffd50> [ 1911.990106] CR2: 00000000008041c0 [ 1912.001889] ---[ end trace e8475aee26ff7d9f ]--- [ 1912.408111] Kernel panic - not syncing: Fatal exception -- 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>
