================================================================== BUG: KCSAN: data-race in hrtimer_interrupt / print_cpu write to 0xffff888237c197d4 of 4 bytes by interrupt on cpu 0: hrtimer_interrupt+0x89/0xaf0 kernel/time/hrtimer.c:1789 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline] __sysvec_apic_timer_interrupt+0x6f/0x1c0 arch/x86/kernel/apic/apic.c:1103 sysvec_apic_timer_interrupt+0x64/0x80 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 _raw_spin_unlock_irqrestore+0x34/0x40 kernel/locking/spinlock.c:195 spin_unlock_irqrestore include/linux/spinlock.h:418 [inline] force_sig_info_to_task+0x26f/0x310 kernel/signal.c:1351 force_sig_fault_to_task kernel/signal.c:1700 [inline] force_sig_fault+0x64/0x90 kernel/signal.c:1706 __bad_area_nosemaphore+0x259/0x2f0 arch/x86/mm/fault.c:846 handle_page_fault arch/x86/mm/fault.c:1485 [inline] exc_page_fault+0x91/0x220 arch/x86/mm/fault.c:1541 asm_exc_page_fault+0x1e/0x30 read to 0xffff888237c197d4 of 4 bytes by task 8447 on cpu 1: print_cpu+0x37f/0x690 kernel/time/timer_list.c:135 timer_list_show+0x114/0x180 kernel/time/timer_list.c:291 traverse+0x150/0x3b0 fs/seq_file.c:111 seq_read_iter+0x87b/0x930 fs/seq_file.c:195 proc_reg_read_iter+0xfc/0x170 fs/proc/inode.c:300 call_read_iter include/linux/fs.h:2157 [inline] do_iter_readv_writev+0x2fb/0x380 fs/read_write.c:727 do_iter_read+0x192/0x5d0 fs/read_write.c:790 vfs_readv fs/read_write.c:910 [inline] do_preadv+0x159/0x240 fs/read_write.c:1002 __do_sys_preadv fs/read_write.c:1052 [inline] __se_sys_preadv fs/read_write.c:1047 [inline] __x64_sys_preadv+0x54/0x60 fs/read_write.c:1047 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x0056ae0b -> 0x0056ae0c Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 8447 Comm: syz-executor.3 Not tainted 5.15.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================