================================================================== BUG: KCSAN: data-race in hrtimer_interrupt / print_cpu write to 0xffff888237c1d960 of 8 bytes by interrupt on cpu 0: hrtimer_interrupt+0x209/0xac0 kernel/time/hrtimer.c:1803 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline] __sysvec_apic_timer_interrupt+0xa3/0x240 arch/x86/kernel/apic/apic.c:1103 sysvec_apic_timer_interrupt+0x88/0xb0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock_irqrestore+0x38/0x60 kernel/locking/spinlock.c:194 print_active_timers kernel/time/timer_list.c:89 [inline] print_base kernel/time/timer_list.c:112 [inline] print_cpu+0x270/0x690 kernel/time/timer_list.c:123 timer_list_show+0x114/0x180 kernel/time/timer_list.c:291 seq_read_iter+0x2e1/0x930 fs/seq_file.c:230 proc_reg_read_iter+0xfc/0x170 fs/proc/inode.c:300 call_read_iter include/linux/fs.h:2155 [inline] generic_file_splice_read+0x24f/0x330 fs/splice.c:311 do_splice_to fs/splice.c:796 [inline] splice_direct_to_actor+0x2aa/0x650 fs/splice.c:870 do_splice_direct+0x106/0x190 fs/splice.c:979 do_sendfile+0x675/0xc40 fs/read_write.c:1245 __do_sys_sendfile64 fs/read_write.c:1310 [inline] __se_sys_sendfile64 fs/read_write.c:1296 [inline] __x64_sys_sendfile64+0x102/0x140 fs/read_write.c:1296 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 read to 0xffff888237c1d960 of 8 bytes by task 11149 on cpu 1: print_cpu+0x32e/0x690 kernel/time/timer_list.c:133 timer_list_show+0x114/0x180 kernel/time/timer_list.c:291 seq_read_iter+0x2e1/0x930 fs/seq_file.c:230 proc_reg_read_iter+0xfc/0x170 fs/proc/inode.c:300 call_read_iter include/linux/fs.h:2155 [inline] generic_file_splice_read+0x24f/0x330 fs/splice.c:311 do_splice_to fs/splice.c:796 [inline] splice_direct_to_actor+0x2aa/0x650 fs/splice.c:870 do_splice_direct+0x106/0x190 fs/splice.c:979 do_sendfile+0x675/0xc40 fs/read_write.c:1245 __do_sys_sendfile64 fs/read_write.c:1310 [inline] __se_sys_sendfile64 fs/read_write.c:1296 [inline] __x64_sys_sendfile64+0x102/0x140 fs/read_write.c:1296 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: 0x000000a4f659ad9a -> 0x000000a4f6f2441a Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 11149 Comm: syz-executor.4 Tainted: G W 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================