On Sun, Aug 2, 2020 at 12:25 AM kernel test robot <lkp@xxxxxxxxx> wrote: > > tree: https://github.com/hnaz/linux-mm master > head: 2932a9e66c580f3c8d95ec27716d437198fb4c94 > commit: 7c0265f304de3c3acd02d0015b56a076357bcce3 [168/421] kasan, arm64: don't instrument functions that enable kasan > config: x86_64-randconfig-r036-20200802 (attached as .config) > compiler: gcc-9 (Debian 9.3.0-14) 9.3.0 > reproduce (this is a W=1 build): > git checkout 7c0265f304de3c3acd02d0015b56a076357bcce3 > # save the attached .config to linux build tree > make W=1 ARCH=x86_64 > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp@xxxxxxxxx> > > All errors (new ones prefixed by >>): > > ld: init/main.o: in function `start_kernel': > >> init/main.c:1012: undefined reference to `efi_enter_virtual_mode' Hm, I can reproduce the issue, but I don't understand why it happens. +EFI and KASAN people, maybe someone has an idea. This is the guilty patch: https://github.com/hnaz/linux-mm/commit/7c0265f304de3c3acd02d0015b56a076357bcce3 The issue is only with efi_enter_virtual_mode() AFAIU, not with any of the other functions. Thanks! > > vim +1012 init/main.c > > 53c99bd665a2649 Martin Schwidefsky 2018-08-31 829 > 7c0265f304de3c3 Andrey Konovalov 2020-08-01 830 asmlinkage __visible __no_sanitize_address void __init start_kernel(void) > ^1da177e4c3f415 Linus Torvalds 2005-04-16 831 { > dd4d9fecbeba893 Fabian Frederick 2014-08-08 832 char *command_line; > dd4d9fecbeba893 Fabian Frederick 2014-08-08 833 char *after_dashes; > 033ab7f8e5c655f Andrew Morton 2006-06-30 834 > d4311ff1a8da48d Aaron Tomlin 2014-09-12 835 set_task_stack_end_magic(&init_task); > 73839c5b2eacc15 Ming Lei 2011-11-17 836 smp_setup_processor_id(); > 3ac7fe5a4aab409 Thomas Gleixner 2008-04-30 837 debug_objects_early_init(); > 420594296838fdc Ingo Molnar 2008-02-14 838 > ddbcc7e8e50aefe Paul Menage 2007-10-18 839 cgroup_init_early(); > fbb9ce9530fd9b6 Ingo Molnar 2006-07-03 840 > fbb9ce9530fd9b6 Ingo Molnar 2006-07-03 841 local_irq_disable(); > 2ce802f62ba32a7 Tejun Heo 2011-01-20 842 early_boot_irqs_disabled = true; > fbb9ce9530fd9b6 Ingo Molnar 2006-07-03 843 > ^1da177e4c3f415 Linus Torvalds 2005-04-16 844 /* > ^1da177e4c3f415 Linus Torvalds 2005-04-16 845 * Interrupts are still disabled. Do necessary setups, then > 1b3b3b49b996140 Viresh Kumar 2017-03-23 846 * enable them. > ^1da177e4c3f415 Linus Torvalds 2005-04-16 847 */ > 44fd22992cb76dc Stas Sergeev 2006-03-23 848 boot_cpu_init(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 849 page_address_init(); > ea676e846a8171b Andrew Morton 2013-04-29 850 pr_notice("%s", linux_banner); > e6b1db98cf4d54d Matthew Garrett 2019-08-19 851 early_security_init(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 852 setup_arch(&command_line); > 7495e0926fdf302 Steven Rostedt (VMware 2020-02-04 853) setup_boot_config(command_line); > 30d7e0d466b3ac0 Alon Bar-Lev 2007-02-12 854 setup_command_line(command_line); > e0982e90cd1ecf5 Mike Travis 2008-03-26 855 setup_nr_cpu_ids(); > d6647bdf98a0de1 Tejun Heo 2009-07-21 856 setup_per_cpu_areas(); > 44fd22992cb76dc Stas Sergeev 2006-03-23 857 smp_prepare_boot_cpu(); /* arch-specific boot-cpu hooks */ > b5b1404d0815894 Linus Torvalds 2018-08-12 858 boot_cpu_hotplug_init(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 859 > 72675e131eb418c Michal Hocko 2017-09-06 860 build_all_zonelists(NULL); > 83b519e8b9572c3 Pekka Enberg 2009-06-10 861 page_alloc_init(); > 83b519e8b9572c3 Pekka Enberg 2009-06-10 862 > 51887d03aca101a Masami Hiramatsu 2020-01-11 863 pr_notice("Kernel command line: %s\n", saved_command_line); > 6041186a32585fc Dan Williams 2019-04-18 864 /* parameters may set static keys */ > 6041186a32585fc Dan Williams 2019-04-18 865 jump_label_init(); > 83b519e8b9572c3 Pekka Enberg 2009-06-10 866 parse_early_param(); > 51e158c12aca3c9 Rusty Russell 2014-04-28 867 after_dashes = parse_args("Booting kernel", > 51e158c12aca3c9 Rusty Russell 2014-04-28 868 static_command_line, __start___param, > 83b519e8b9572c3 Pekka Enberg 2009-06-10 869 __stop___param - __start___param, > ecc8617053e0a97 Luis R. Rodriguez 2015-03-30 870 -1, -1, NULL, &unknown_bootoption); > 3438cf549d2f3ee Daniel Thompson 2014-11-11 871 if (!IS_ERR_OR_NULL(after_dashes)) > 51e158c12aca3c9 Rusty Russell 2014-04-28 872 parse_args("Setting init args", after_dashes, NULL, 0, -1, -1, > ecc8617053e0a97 Luis R. Rodriguez 2015-03-30 873 NULL, set_init_arg); > 1319916209ce8f5 Masami Hiramatsu 2020-01-11 874 if (extra_init_args) > 1319916209ce8f5 Masami Hiramatsu 2020-01-11 875 parse_args("Setting extra init args", extra_init_args, > 1319916209ce8f5 Masami Hiramatsu 2020-01-11 876 NULL, 0, -1, -1, NULL, set_init_arg); > 97ce2c88f9ad42e Jeremy Fitzhardinge 2011-10-12 877 > 83b519e8b9572c3 Pekka Enberg 2009-06-10 878 /* > 83b519e8b9572c3 Pekka Enberg 2009-06-10 879 * These use large bootmem allocations and must precede > 83b519e8b9572c3 Pekka Enberg 2009-06-10 880 * kmem_cache_init() > 83b519e8b9572c3 Pekka Enberg 2009-06-10 881 */ > 162a7e7500f9664 Mike Travis 2011-05-24 882 setup_log_buf(0); > 83b519e8b9572c3 Pekka Enberg 2009-06-10 883 vfs_caches_init_early(); > 83b519e8b9572c3 Pekka Enberg 2009-06-10 884 sort_main_extable(); > 83b519e8b9572c3 Pekka Enberg 2009-06-10 885 trap_init(); > 444f478f65c7ca4 Pekka Enberg 2009-06-11 886 mm_init(); > de03c72cfce5b26 KOSAKI Motohiro 2011-05-24 887 > f631718de3ca24a Steven Rostedt (VMware 2017-03-03 888) ftrace_init(); > f631718de3ca24a Steven Rostedt (VMware 2017-03-03 889) > e725c731e3bb1e8 Steven Rostedt (VMware 2017-03-03 890) /* trace_printk can be enabled here */ > e725c731e3bb1e8 Steven Rostedt (VMware 2017-03-03 891) early_trace_init(); > e725c731e3bb1e8 Steven Rostedt (VMware 2017-03-03 892) > ^1da177e4c3f415 Linus Torvalds 2005-04-16 893 /* > ^1da177e4c3f415 Linus Torvalds 2005-04-16 894 * Set up the scheduler prior starting any interrupts (such as the > ^1da177e4c3f415 Linus Torvalds 2005-04-16 895 * timer interrupt). Full topology setup happens at smp_init() > ^1da177e4c3f415 Linus Torvalds 2005-04-16 896 * time - but meanwhile we still have a functioning scheduler. > ^1da177e4c3f415 Linus Torvalds 2005-04-16 897 */ > ^1da177e4c3f415 Linus Torvalds 2005-04-16 898 sched_init(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 899 /* > ^1da177e4c3f415 Linus Torvalds 2005-04-16 900 * Disable preemption - early bootup scheduling is extremely > ^1da177e4c3f415 Linus Torvalds 2005-04-16 901 * fragile until we cpu_idle() for the first time. > ^1da177e4c3f415 Linus Torvalds 2005-04-16 902 */ > ^1da177e4c3f415 Linus Torvalds 2005-04-16 903 preempt_disable(); > dd4d9fecbeba893 Fabian Frederick 2014-08-08 904 if (WARN(!irqs_disabled(), > dd4d9fecbeba893 Fabian Frederick 2014-08-08 905 "Interrupts were enabled *very* early, fixing it\n")) > c4a68306b9c0939 Ard van Breemen 2007-01-05 906 local_irq_disable(); > 0a835c4f090af2c Matthew Wilcox 2016-12-20 907 radix_tree_init(); > 3347fa0928210d9 Tejun Heo 2016-09-16 908 > 7d229c668a114e8 Tal Shorer 2017-11-03 909 /* > 7d229c668a114e8 Tal Shorer 2017-11-03 910 * Set up housekeeping before setting up workqueues to allow the unbound > 7d229c668a114e8 Tal Shorer 2017-11-03 911 * workqueue to take non-housekeeping into account. > 7d229c668a114e8 Tal Shorer 2017-11-03 912 */ > 7d229c668a114e8 Tal Shorer 2017-11-03 913 housekeeping_init(); > 7d229c668a114e8 Tal Shorer 2017-11-03 914 > 3347fa0928210d9 Tejun Heo 2016-09-16 915 /* > 3347fa0928210d9 Tejun Heo 2016-09-16 916 * Allow workqueue creation and work item queueing/cancelling > 3347fa0928210d9 Tejun Heo 2016-09-16 917 * early. Work item execution depends on kthreads and starts after > 3347fa0928210d9 Tejun Heo 2016-09-16 918 * workqueue_init(). > 3347fa0928210d9 Tejun Heo 2016-09-16 919 */ > 3347fa0928210d9 Tejun Heo 2016-09-16 920 workqueue_init_early(); > 3347fa0928210d9 Tejun Heo 2016-09-16 921 > ^1da177e4c3f415 Linus Torvalds 2005-04-16 922 rcu_init(); > 5f893b2639b21ff Steven Rostedt (Red Hat 2014-12-12 923) > e725c731e3bb1e8 Steven Rostedt (VMware 2017-03-03 924) /* Trace events are available after this */ > 5f893b2639b21ff Steven Rostedt (Red Hat 2014-12-12 925) trace_init(); > 5f893b2639b21ff Steven Rostedt (Red Hat 2014-12-12 926) > 4e37958d1288ce9 Steven Rostedt (VMware 2018-03-26 927) if (initcall_debug) > 4e37958d1288ce9 Steven Rostedt (VMware 2018-03-26 928) initcall_debug_enable(); > 4e37958d1288ce9 Steven Rostedt (VMware 2018-03-26 929) > 65f382fd0c8fa48 Frederic Weisbecker 2013-07-11 930 context_tracking_init(); > 0b8f1efad30bd58 Yinghai Lu 2008-12-05 931 /* init some links before init_ISA_irqs() */ > 0b8f1efad30bd58 Yinghai Lu 2008-12-05 932 early_irq_init(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 933 init_IRQ(); > ad2b13536ace08d Thomas Gleixner 2013-03-05 934 tick_init(); > d6dd50e07c5bec0 Linus Torvalds 2014-10-13 935 rcu_init_nohz(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 936 init_timers(); > c0a3132963db68f Thomas Gleixner 2006-01-09 937 hrtimers_init(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 938 softirq_init(); > ad596171ed635c5 John Stultz 2006-06-26 939 timekeeping_init(); > d55535232c3dbde Kees Cook 2019-04-19 940 > d55535232c3dbde Kees Cook 2019-04-19 941 /* > d55535232c3dbde Kees Cook 2019-04-19 942 * For best initial stack canary entropy, prepare it after: > d55535232c3dbde Kees Cook 2019-04-19 943 * - setup_arch() for any UEFI RNG entropy and boot cmdline access > d55535232c3dbde Kees Cook 2019-04-19 944 * - timekeeping_init() for ktime entropy used in rand_initialize() > d55535232c3dbde Kees Cook 2019-04-19 945 * - rand_initialize() to get any arch-specific entropy like RDRAND > d55535232c3dbde Kees Cook 2019-04-19 946 * - add_latent_entropy() to get any latent entropy > d55535232c3dbde Kees Cook 2019-04-19 947 * - adding command line entropy > d55535232c3dbde Kees Cook 2019-04-19 948 */ > d55535232c3dbde Kees Cook 2019-04-19 949 rand_initialize(); > d55535232c3dbde Kees Cook 2019-04-19 950 add_latent_entropy(); > d55535232c3dbde Kees Cook 2019-04-19 951 add_device_randomness(command_line, strlen(command_line)); > d55535232c3dbde Kees Cook 2019-04-19 952 boot_init_stack_canary(); > d55535232c3dbde Kees Cook 2019-04-19 953 > 88fecaa27f398d9 John Stultz 2006-07-03 954 time_init(); > 9e6302056f8029f Stephane Eranian 2013-04-03 955 perf_event_init(); > 93e028148fce0be Heiko Carstens 2006-07-03 956 profile_init(); > d8ad7d1123a960c Takao Indoh 2011-03-29 957 call_function_init(); > f91eb62f71b31e6 Steven Rostedt 2013-04-29 958 WARN(!irqs_disabled(), "Interrupts were enabled early\n"); > c3bc8fd637a9623 Joel Fernandes (Google 2018-07-30 959) > 2ce802f62ba32a7 Tejun Heo 2011-01-20 960 early_boot_irqs_disabled = false; > 93e028148fce0be Heiko Carstens 2006-07-03 961 local_irq_enable(); > dcce284a259373f Benjamin Herrenschmidt 2009-06-18 962 > 7e85ee0c1d15ca5 Pekka Enberg 2009-06-12 963 kmem_cache_init_late(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 964 > ^1da177e4c3f415 Linus Torvalds 2005-04-16 965 /* > ^1da177e4c3f415 Linus Torvalds 2005-04-16 966 * HACK ALERT! This is early. We're enabling the console before > ^1da177e4c3f415 Linus Torvalds 2005-04-16 967 * we've done PCI setups etc, and console_init() must be aware of > ^1da177e4c3f415 Linus Torvalds 2005-04-16 968 * this. But we do want output early, in case something goes wrong. > ^1da177e4c3f415 Linus Torvalds 2005-04-16 969 */ > ^1da177e4c3f415 Linus Torvalds 2005-04-16 970 console_init(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 971 if (panic_later) > 499a4584d7f817d Tetsuo Handa 2014-01-23 972 panic("Too many boot %s vars at `%s'", panic_later, > 499a4584d7f817d Tetsuo Handa 2014-01-23 973 panic_param); > fbb9ce9530fd9b6 Ingo Molnar 2006-07-03 974 > c3bc8fd637a9623 Joel Fernandes (Google 2018-07-30 975) lockdep_init(); > fbb9ce9530fd9b6 Ingo Molnar 2006-07-03 976 > 9a11b49a805665e Ingo Molnar 2006-07-03 977 /* > 9a11b49a805665e Ingo Molnar 2006-07-03 978 * Need to run this when irqs are enabled, because it wants > 9a11b49a805665e Ingo Molnar 2006-07-03 979 * to self-test [hard/soft]-irqs on/off lock inversion bugs > 9a11b49a805665e Ingo Molnar 2006-07-03 980 * too: > 9a11b49a805665e Ingo Molnar 2006-07-03 981 */ > 9a11b49a805665e Ingo Molnar 2006-07-03 982 locking_selftest(); > 9a11b49a805665e Ingo Molnar 2006-07-03 983 > c7753208a94c73d Tom Lendacky 2017-07-17 984 /* > c7753208a94c73d Tom Lendacky 2017-07-17 985 * This needs to be called before any devices perform DMA > c7753208a94c73d Tom Lendacky 2017-07-17 986 * operations that might use the SWIOTLB bounce buffers. It will > c7753208a94c73d Tom Lendacky 2017-07-17 987 * mark the bounce buffers as decrypted so that their usage will > c7753208a94c73d Tom Lendacky 2017-07-17 988 * not cause "plain-text" data to be decrypted when accessed. > c7753208a94c73d Tom Lendacky 2017-07-17 989 */ > c7753208a94c73d Tom Lendacky 2017-07-17 990 mem_encrypt_init(); > c7753208a94c73d Tom Lendacky 2017-07-17 991 > ^1da177e4c3f415 Linus Torvalds 2005-04-16 992 #ifdef CONFIG_BLK_DEV_INITRD > ^1da177e4c3f415 Linus Torvalds 2005-04-16 993 if (initrd_start && !initrd_below_start_ok && > bd673c7c3b1681d Geert Uytterhoeven 2008-07-29 994 page_to_pfn(virt_to_page((void *)initrd_start)) < min_low_pfn) { > ea676e846a8171b Andrew Morton 2013-04-29 995 pr_crit("initrd overwritten (0x%08lx < 0x%08lx) - disabling it.\n", > bd673c7c3b1681d Geert Uytterhoeven 2008-07-29 996 page_to_pfn(virt_to_page((void *)initrd_start)), > bd673c7c3b1681d Geert Uytterhoeven 2008-07-29 997 min_low_pfn); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 998 initrd_start = 0; > ^1da177e4c3f415 Linus Torvalds 2005-04-16 999 } > ^1da177e4c3f415 Linus Torvalds 2005-04-16 1000 #endif > e7c8d5c9955a4d2 Christoph Lameter 2005-06-21 1001 setup_per_cpu_pageset(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 1002 numa_policy_init(); > 9c71206d060d4e8 Dou Liyang 2017-09-13 1003 acpi_early_init(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 1004 if (late_time_init) > ^1da177e4c3f415 Linus Torvalds 2005-04-16 1005 late_time_init(); > 857baa87b6422bc Pavel Tatashin 2018-07-19 1006 sched_clock_init(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 1007 calibrate_delay(); > 95846ecf9dac508 Gargi Sharma 2017-11-17 1008 pid_idr_init(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 1009 anon_vma_init(); > 11520e5e7c1855f Linus Torvalds 2012-12-15 1010 #ifdef CONFIG_X86 > 83e68189745ad93 Matt Fleming 2012-11-14 1011 if (efi_enabled(EFI_RUNTIME_SERVICES)) > 11520e5e7c1855f Linus Torvalds 2012-12-15 @1012 efi_enter_virtual_mode(); > 11520e5e7c1855f Linus Torvalds 2012-12-15 1013 #endif > b235beea9e996a4 Linus Torvalds 2016-06-24 1014 thread_stack_cache_init(); > d84f4f992cbd76e David Howells 2008-11-14 1015 cred_init(); > ff691f6e03815dc Heinrich Schuchardt 2015-04-16 1016 fork_init(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 1017 proc_caches_init(); > 3ea056c50476f87 Alexey Dobriyan 2018-04-10 1018 uts_ns_init(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 1019 buffer_init(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 1020 key_init(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 1021 security_init(); > 0b4b3827db386ec Jason Wessel 2010-05-20 1022 dbg_late_init(); > 4248b0da460839e Mel Gorman 2015-08-06 1023 vfs_caches_init(); > 62906027091f1d0 Nicholas Piggin 2016-12-25 1024 pagecache_init(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 1025 signals_init(); > 0965232035cfa59 Alexey Dobriyan 2018-04-10 1026 seq_file_init(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 1027 proc_root_init(); > e149ed2b805fefd Al Viro 2014-11-01 1028 nsfs_init(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 1029 cpuset_init(); > 695df2132cfe378 Zefan Li 2015-03-04 1030 cgroup_init(); > c757249af152c59 Shailabh Nagar 2006-07-14 1031 taskstats_init_early(); > ca74e92b4698276 Shailabh Nagar 2006-07-14 1032 delayacct_init(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 1033 > 4fc19708b165c1c Nadav Amit 2019-04-26 1034 poking_init(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 1035 check_bugs(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 1036 > b064a8fa77dfead Rafael J. Wysocki 2015-06-10 1037 acpi_subsystem_init(); > e7ff3a47630d951 Thomas Gleixner 2016-12-09 1038 arch_post_acpi_subsys_init(); > 6ae6996a466e14b Feng Tang 2009-08-14 1039 sfi_init_late(); > dfd402a4c4baae4 Marco Elver 2019-11-14 1040 kcsan_init(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 1041 > ^1da177e4c3f415 Linus Torvalds 2005-04-16 1042 /* Do the rest non-__init'ed, we're now alive */ > 53c99bd665a2649 Martin Schwidefsky 2018-08-31 1043 arch_call_rest_init(); > a9a3ed1eff3601b Borislav Petkov 2020-04-22 1044 > a9a3ed1eff3601b Borislav Petkov 2020-04-22 1045 prevent_tail_call_optimization(); > ^1da177e4c3f415 Linus Torvalds 2005-04-16 1046 } > ^1da177e4c3f415 Linus Torvalds 2005-04-16 1047 > > :::::: The code at line 1012 was first introduced by commit > :::::: 11520e5e7c1855fc3bf202bb3be35a39d9efa034 Revert "x86-64/efi: Use EFI to deal with platform wall clock (again)" > > :::::: TO: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> > :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> > > --- > 0-DAY CI Kernel Test Service, Intel Corporation > https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
