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testcase: boot compiler: clang-17 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G (please refer to attached dmesg/kmsg for entire log/backtrace) +------------------------------------------------------+------------+------------+ | | 82d460edc1 | 0bdad28369 | +------------------------------------------------------+------------+------------+ | UBSAN:array-index-out-of-bounds_in_kernel/kallsyms.c | 0 | 12 | +------------------------------------------------------+------------+------------+ 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 | Closes: https://lore.kernel.org/oe-lkp/202404241532.b583b55f-lkp@intel.com [ 0.148342][ T0] ------------[ cut here ]------------ [ 0.148746][ T0] UBSAN: array-index-out-of-bounds in kernel/kallsyms.c:181:40 [ 0.149452][ T0] index 69197 is out of range for type 'const int[1]' [ 0.149954][ T0] CPU: 0 PID: 0 Comm: swapper Not tainted 6.9.0-rc5-00005-g0bdad28369fc #1 [ 0.150594][ T0] Call Trace: [ 0.150834][ T0] [ 0.151048][ T0] ? dump_stack_lvl (lib/dump_stack.c:? lib/dump_stack.c:114) [ 0.151403][ T0] ? __ubsan_handle_out_of_bounds (lib/ubsan.c:232 lib/ubsan.c:429) [ 0.151851][ T0] ? format_decode (lib/vsprintf.c:2592) [ 0.152205][ T0] ? __cfi_kvm_guest_apic_eoi_write (arch/x86/kernel/kvm.c:337) [ 0.152658][ T0] ? get_symbol_pos (kernel/kallsyms.c:?) [ 0.153016][ T0] ? __cfi_kvm_guest_apic_eoi_write (arch/x86/kernel/kvm.c:337) [ 0.153469][ T0] ? __cfi_kvm_guest_apic_eoi_write (arch/x86/kernel/kvm.c:337) [ 0.153921][ T0] ? kallsyms_lookup_buildid (kernel/kallsyms.c:429) [ 0.154333][ T0] ? __cfi_kvm_guest_apic_eoi_write (arch/x86/kernel/kvm.c:337) [ 0.154785][ T0] ? __cfi_kvm_guest_apic_eoi_write (arch/x86/kernel/kvm.c:337) [ 0.155236][ T0] ? __sprint_symbol (kernel/kallsyms.c:513) [ 0.155597][ T0] ? symbol_string (lib/vsprintf.c:?) [ 0.155958][ T0] ? pointer (lib/vsprintf.c:?) [ 0.156273][ T0] ? vsnprintf (lib/vsprintf.c:2828) [ 0.156602][ T0] ? vprintk_store (kernel/printk/printk.c:2228) [ 0.156963][ T0] ? lock_release (kernel/locking/lockdep.c:?) [ 0.157305][ T0] ? vprintk_emit (kernel/printk/printk.c:2329) [ 0.157645][ T0] ? lock_release (kernel/locking/lockdep.c:?) [ 0.157986][ T0] ? _printk (kernel/printk/printk.c:2376) [ 0.158287][ T0] ? __cfi_kvm_guest_apic_eoi_write (arch/x86/kernel/kvm.c:337) [ 0.158740][ T0] ? kvm_guest_init (arch/x86/kernel/kvm.c:?) [ 0.159100][ T0] ? setup_arch (arch/x86/kernel/setup.c:1156) [ 0.159435][ T0] ? start_kernel (init/main.c:906) [ 0.159776][ T0] ? x86_64_start_reservations (??:?) [ 0.160195][ T0] ? x86_64_start_kernel (??:?) [ 0.160574][ T0] ? common_startup_64 (arch/x86/kernel/head_64.S:421) [ 0.160956][ T0] [ 0.161176][ T0] ---[ end trace ]--- The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20240424/202404241532.b583b55f-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki