tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 0f5f12ac05f36f117e793656c3f560625e927f1b commit: 70a370fa006a78b291d86789af26acd047679861 [3906/4597] kexec: drop dependency on ARCH_SUPPORTS_KEXEC from CRASH_DUMP config: arm-randconfig-r133-20231204 (https://download.01.org/0day-ci/archive/20231205/202312051419.DsbnPGym-lkp@xxxxxxxxx/config) compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project.git 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a) reproduce: (https://download.01.org/0day-ci/archive/20231205/202312051419.DsbnPGym-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202312051419.DsbnPGym-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) arch/arm/kernel/machine_kexec.c:62:23: sparse: sparse: cast removes address space '__user' of expression arch/arm/kernel/machine_kexec.c:62:23: sparse: sparse: cast removes address space '__user' of expression >> arch/arm/kernel/machine_kexec.c:62:23: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got restricted __be32 [usertype] * @@ arch/arm/kernel/machine_kexec.c:62:23: sparse: expected void const volatile [noderef] __user *ptr arch/arm/kernel/machine_kexec.c:62:23: sparse: got restricted __be32 [usertype] * arch/arm/kernel/machine_kexec.c:62:23: sparse: sparse: cast removes address space '__user' of expression arch/arm/kernel/machine_kexec.c:62:23: sparse: sparse: cast removes address space '__user' of expression arch/arm/kernel/machine_kexec.c:62:23: sparse: sparse: cast to restricted __be32 vim +62 arch/arm/kernel/machine_kexec.c b23065313297e7 Per Fransson 2010-12-03 27 c587e4a6a4d808 Richard Purdie 2007-02-06 28 /* c587e4a6a4d808 Richard Purdie 2007-02-06 29 * Provide a dummy crash_notes definition while crash dump arrives to arm. c587e4a6a4d808 Richard Purdie 2007-02-06 30 * This prevents breakage of crash_notes attribute in kernel/ksysfs.c. c587e4a6a4d808 Richard Purdie 2007-02-06 31 */ c587e4a6a4d808 Richard Purdie 2007-02-06 32 c587e4a6a4d808 Richard Purdie 2007-02-06 33 int machine_kexec_prepare(struct kimage *image) c587e4a6a4d808 Richard Purdie 2007-02-06 34 { 4cabd1d9625c7d Matthew Leach 2012-09-21 35 struct kexec_segment *current_segment; 4cabd1d9625c7d Matthew Leach 2012-09-21 36 __be32 header; 4cabd1d9625c7d Matthew Leach 2012-09-21 37 int i, err; 4cabd1d9625c7d Matthew Leach 2012-09-21 38 0d70262a2d6088 Russell King 2017-07-19 39 image->arch.kernel_r2 = image->start - KEXEC_ARM_ZIMAGE_OFFSET 0d70262a2d6088 Russell King 2017-07-19 40 + KEXEC_ARM_ATAGS_OFFSET; 0d70262a2d6088 Russell King 2017-07-19 41 2103f6cba61a8b Stephen Warren 2013-08-02 42 /* 2103f6cba61a8b Stephen Warren 2013-08-02 43 * Validate that if the current HW supports SMP, then the SW supports 2103f6cba61a8b Stephen Warren 2013-08-02 44 * and implements CPU hotplug for the current HW. If not, we won't be 2103f6cba61a8b Stephen Warren 2013-08-02 45 * able to kexec reliably, so fail the prepare operation. 2103f6cba61a8b Stephen Warren 2013-08-02 46 */ fee3fd4fd2ad13 Geert Uytterhoeven 2015-04-01 47 if (num_possible_cpus() > 1 && platform_can_secondary_boot() && fee3fd4fd2ad13 Geert Uytterhoeven 2015-04-01 48 !platform_can_cpu_hotplug()) 2103f6cba61a8b Stephen Warren 2013-08-02 49 return -EINVAL; 2103f6cba61a8b Stephen Warren 2013-08-02 50 4cabd1d9625c7d Matthew Leach 2012-09-21 51 /* 4cabd1d9625c7d Matthew Leach 2012-09-21 52 * No segment at default ATAGs address. try to locate 4cabd1d9625c7d Matthew Leach 2012-09-21 53 * a dtb using magic. 4cabd1d9625c7d Matthew Leach 2012-09-21 54 */ 4cabd1d9625c7d Matthew Leach 2012-09-21 55 for (i = 0; i < image->nr_segments; i++) { 4cabd1d9625c7d Matthew Leach 2012-09-21 56 current_segment = &image->segment[i]; 4cabd1d9625c7d Matthew Leach 2012-09-21 57 0719392a61a9db Russell King 2016-08-02 58 if (!memblock_is_region_memory(idmap_to_phys(current_segment->mem), 2456f44dd7a9aa Aaro Koskinen 2012-10-16 59 current_segment->memsz)) c564df4db85aac Matthew Leach 2012-09-21 60 return -EINVAL; c564df4db85aac Matthew Leach 2012-09-21 61 4cabd1d9625c7d Matthew Leach 2012-09-21 @62 err = get_user(header, (__be32*)current_segment->buf); 4cabd1d9625c7d Matthew Leach 2012-09-21 63 if (err) 4cabd1d9625c7d Matthew Leach 2012-09-21 64 return err; 4cabd1d9625c7d Matthew Leach 2012-09-21 65 0d70262a2d6088 Russell King 2017-07-19 66 if (header == cpu_to_be32(OF_DT_HEADER)) 0d70262a2d6088 Russell King 2017-07-19 67 image->arch.kernel_r2 = current_segment->mem; 4cabd1d9625c7d Matthew Leach 2012-09-21 68 } c587e4a6a4d808 Richard Purdie 2007-02-06 69 return 0; c587e4a6a4d808 Richard Purdie 2007-02-06 70 } c587e4a6a4d808 Richard Purdie 2007-02-06 71 :::::: The code at line 62 was first introduced by commit :::::: 4cabd1d9625c7d88acd143f4021fbef75394f154 ARM: 7539/1: kexec: scan for dtb magic in segments :::::: TO: Matthew Leach <matthew.leach@xxxxxxx> :::::: CC: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
