tree: https://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git next head: f4cc0ea28451d8adfb5f1ee35635e07650907c6e commit: 168f1c4079fcddd8c989ce103fcc79d170b7b43c [13/14] efi: ia64: disable the capsule loader config: x86_64-randconfig-a006-20201213 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git/commit/?id=16... git remote add efi https://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git git fetch --no-tags efi next git checkout 168f1c4079fcddd8c989ce103fcc79d170b7b43c # 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(a)intel.com&gt; All errors (new ones prefixed by >>): ld: warning: orphan section `.data..decrypted' from `arch/x86/kernel/cpu/vmware.o' being placed in section `.data..decrypted' ld: warning: orphan section `.data..decrypted' from `arch/x86/kernel/kvm.o' being placed in section `.data..decrypted' ld: arch/x86/kernel/reboot.o: in function `native_machine_emergency_restart': vim +613 arch/x86/kernel/reboot.c 7432d149fda8ce9 Ingo Molnar 2008-03-06 573 660e34cebf0a11d Matthew Garrett 2011-04-04 574 /* 5be44a6fb1edb57 Ingo Molnar 2014-04-04 575 * To the best of our knowledge Windows compatible x86 hardware expects 5be44a6fb1edb57 Ingo Molnar 2014-04-04 576 * the following on reboot: 660e34cebf0a11d Matthew Garrett 2011-04-04 577 * 660e34cebf0a11d Matthew Garrett 2011-04-04 578 * 1) If the FADT has the ACPI reboot register flag set, try it 660e34cebf0a11d Matthew Garrett 2011-04-04 579 * 2) If still alive, write to the keyboard controller 660e34cebf0a11d Matthew Garrett 2011-04-04 580 * 3) If still alive, write to the ACPI reboot register again 660e34cebf0a11d Matthew Garrett 2011-04-04 581 * 4) If still alive, write to the keyboard controller again a4f1987e4c5489a Li, Aubrey 2014-03-02 582 * 5) If still alive, call the EFI runtime service to reboot 5be44a6fb1edb57 Ingo Molnar 2014-04-04 583 * 6) If no EFI runtime service, call the BIOS to do a reboot 660e34cebf0a11d Matthew Garrett 2011-04-04 584 * 5be44a6fb1edb57 Ingo Molnar 2014-04-04 585 * We default to following the same pattern. We also have 5be44a6fb1edb57 Ingo Molnar 2014-04-04 586 * two other reboot methods: 'triple fault' and 'PCI', which 5be44a6fb1edb57 Ingo Molnar 2014-04-04 587 * can be triggered via the reboot= kernel boot option or 5be44a6fb1edb57 Ingo Molnar 2014-04-04 588 * via quirks. 5be44a6fb1edb57 Ingo Molnar 2014-04-04 589 * 5be44a6fb1edb57 Ingo Molnar 2014-04-04 590 * This means that this function can never return, it can misbehave 5be44a6fb1edb57 Ingo Molnar 2014-04-04 591 * by not rebooting properly and hanging. 660e34cebf0a11d Matthew Garrett 2011-04-04 592 */ 416e2d63794d4e5 Jody Belka 2008-02-12 593 static void native_machine_emergency_restart(void) 4d022e35fd7e07c Miguel Boton 2008-01-30 594 { 4d022e35fd7e07c Miguel Boton 2008-01-30 595 int i; 660e34cebf0a11d Matthew Garrett 2011-04-04 596 int attempt = 0; 660e34cebf0a11d Matthew Garrett 2011-04-04 597 int orig_reboot_type = reboot_type; edf2b1394611fef Robin Holt 2013-07-08 598 unsigned short mode; 4d022e35fd7e07c Miguel Boton 2008-01-30 599 d176720d34c72f7 Eduardo Habkost 2008-11-17 600 if (reboot_emergency) d176720d34c72f7 Eduardo Habkost 2008-11-17 601 emergency_vmx_disable_all(); d176720d34c72f7 Eduardo Habkost 2008-11-17 602 840c2baf2d4cdf3 Joseph Cihula 2009-06-30 603 tboot_shutdown(TB_SHUTDOWN_REBOOT); 840c2baf2d4cdf3 Joseph Cihula 2009-06-30 604 4d022e35fd7e07c Miguel Boton 2008-01-30 605 /* Tell the BIOS if we want cold or warm reboot */ edf2b1394611fef Robin Holt 2013-07-08 606 mode = reboot_mode == REBOOT_WARM ? 0x1234 : 0; edf2b1394611fef Robin Holt 2013-07-08 607 *((unsigned short *)__va(0x472)) = mode; 4d022e35fd7e07c Miguel Boton 2008-01-30 608 87615a34d561ef5 Matt Fleming 2016-04-25 609 /* 87615a34d561ef5 Matt Fleming 2016-04-25 610 * If an EFI capsule has been registered with the firmware then 87615a34d561ef5 Matt Fleming 2016-04-25 611 * override the reboot= parameter. 87615a34d561ef5 Matt Fleming 2016-04-25 612 */ 87615a34d561ef5 Matt Fleming 2016-04-25 @613 if (efi_capsule_pending(NULL)) { 87615a34d561ef5 Matt Fleming 2016-04-25 614 pr_info("EFI capsule is pending, forcing EFI reboot.\n"); 87615a34d561ef5 Matt Fleming 2016-04-25 615 reboot_type = BOOT_EFI; 87615a34d561ef5 Matt Fleming 2016-04-25 616 } 87615a34d561ef5 Matt Fleming 2016-04-25 617 4d022e35fd7e07c Miguel Boton 2008-01-30 618 for (;;) { 4d022e35fd7e07c Miguel Boton 2008-01-30 619 /* Could also try the reset bit in the Hammer NB */ 4d022e35fd7e07c Miguel Boton 2008-01-30 620 switch (reboot_type) { 5be44a6fb1edb57 Ingo Molnar 2014-04-04 621 case BOOT_ACPI: 5be44a6fb1edb57 Ingo Molnar 2014-04-04 622 acpi_reboot(); 5be44a6fb1edb57 Ingo Molnar 2014-04-04 623 reboot_type = BOOT_KBD; 5be44a6fb1edb57 Ingo Molnar 2014-04-04 624 break; 5be44a6fb1edb57 Ingo Molnar 2014-04-04 625 4d022e35fd7e07c Miguel Boton 2008-01-30 626 case BOOT_KBD: 144d102b926f887 Michael D Labriola 2012-02-01 627 mach_reboot_fixups(); /* For board specific fixups */ 7432d149fda8ce9 Ingo Molnar 2008-03-06 628 4d022e35fd7e07c Miguel Boton 2008-01-30 629 for (i = 0; i < 10; i++) { 4d022e35fd7e07c Miguel Boton 2008-01-30 630 kb_wait(); 4d022e35fd7e07c Miguel Boton 2008-01-30 631 udelay(50); 144d102b926f887 Michael D Labriola 2012-02-01 632 outb(0xfe, 0x64); /* Pulse reset low */ 4d022e35fd7e07c Miguel Boton 2008-01-30 633 udelay(50); 4d022e35fd7e07c Miguel Boton 2008-01-30 634 } 660e34cebf0a11d Matthew Garrett 2011-04-04 635 if (attempt == 0 && orig_reboot_type == BOOT_ACPI) { 660e34cebf0a11d Matthew Garrett 2011-04-04 636 attempt = 1; 660e34cebf0a11d Matthew Garrett 2011-04-04 637 reboot_type = BOOT_ACPI; 660e34cebf0a11d Matthew Garrett 2011-04-04 638 } else { a4f1987e4c5489a Li, Aubrey 2014-03-02 639 reboot_type = BOOT_EFI; 660e34cebf0a11d Matthew Garrett 2011-04-04 640 } 660e34cebf0a11d Matthew Garrett 2011-04-04 641 break; 4d022e35fd7e07c Miguel Boton 2008-01-30 642 4d022e35fd7e07c Miguel Boton 2008-01-30 643 case BOOT_EFI: 8562c99cdd30217 Matt Fleming 2014-06-13 644 efi_reboot(reboot_mode, NULL); 5be44a6fb1edb57 Ingo Molnar 2014-04-04 645 reboot_type = BOOT_BIOS; 5be44a6fb1edb57 Ingo Molnar 2014-04-04 646 break; 5be44a6fb1edb57 Ingo Molnar 2014-04-04 647 5be44a6fb1edb57 Ingo Molnar 2014-04-04 648 case BOOT_BIOS: 5be44a6fb1edb57 Ingo Molnar 2014-04-04 649 machine_real_restart(MRR_BIOS); 5be44a6fb1edb57 Ingo Molnar 2014-04-04 650 5be44a6fb1edb57 Ingo Molnar 2014-04-04 651 /* We're probably dead after this, but... */ 5be44a6fb1edb57 Ingo Molnar 2014-04-04 652 reboot_type = BOOT_CF9_SAFE; 14d7ca5c5758536 H. Peter Anvin 2008-11-11 653 break; 4d022e35fd7e07c Miguel Boton 2008-01-30 654 5be44a6fb1edb57 Ingo Molnar 2014-04-04 655 case BOOT_CF9_FORCE: 14d7ca5c5758536 H. Peter Anvin 2008-11-11 656 port_cf9_safe = true; df561f6688fef77 Gustavo A. R. Silva 2020-08-23 657 fallthrough; 4d022e35fd7e07c Miguel Boton 2008-01-30 658 5be44a6fb1edb57 Ingo Molnar 2014-04-04 659 case BOOT_CF9_SAFE: 14d7ca5c5758536 H. Peter Anvin 2008-11-11 660 if (port_cf9_safe) { 5be44a6fb1edb57 Ingo Molnar 2014-04-04 661 u8 reboot_code = reboot_mode == REBOOT_WARM ? 0x06 : 0x0E; 16c21ae5ca636cf Li Fei 2013-08-21 662 u8 cf9 = inb(0xcf9) & ~reboot_code; 14d7ca5c5758536 H. Peter Anvin 2008-11-11 663 outb(cf9|2, 0xcf9); /* Request hard reset */ 14d7ca5c5758536 H. Peter Anvin 2008-11-11 664 udelay(50); 16c21ae5ca636cf Li Fei 2013-08-21 665 /* Actually do the reset */ 16c21ae5ca636cf Li Fei 2013-08-21 666 outb(cf9|reboot_code, 0xcf9); 14d7ca5c5758536 H. Peter Anvin 2008-11-11 667 udelay(50); 14d7ca5c5758536 H. Peter Anvin 2008-11-11 668 } 5be44a6fb1edb57 Ingo Molnar 2014-04-04 669 reboot_type = BOOT_TRIPLE; 5be44a6fb1edb57 Ingo Molnar 2014-04-04 670 break; 5be44a6fb1edb57 Ingo Molnar 2014-04-04 671 5be44a6fb1edb57 Ingo Molnar 2014-04-04 672 case BOOT_TRIPLE: e802a51ede91350 Thomas Gleixner 2017-08-28 673 idt_invalidate(NULL); 5be44a6fb1edb57 Ingo Molnar 2014-04-04 674 __asm__ __volatile__("int3"); 5be44a6fb1edb57 Ingo Molnar 2014-04-04 675 5be44a6fb1edb57 Ingo Molnar 2014-04-04 676 /* We're probably dead after this, but... */ 5be44a6fb1edb57 Ingo Molnar 2014-04-04 677 reboot_type = BOOT_KBD; 4d022e35fd7e07c Miguel Boton 2008-01-30 678 break; 4d022e35fd7e07c Miguel Boton 2008-01-30 679 } 4d022e35fd7e07c Miguel Boton 2008-01-30 680 } 4d022e35fd7e07c Miguel Boton 2008-01-30 681 } 4d022e35fd7e07c Miguel Boton 2008-01-30 682 :::::: The code at line 613 was first introduced by commit :::::: 87615a34d561ef59bd0cffc73256a21220dfdffd x86/efi: Force EFI reboot to process pending capsules :::::: TO: Matt Fleming <matt(a)codeblueprint.co.uk&gt; :::::: CC: Ingo Molnar <mingo(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org