================================================================== BUG: KCSAN: data-race in clockevents_program_event / print_tickdevice write to 0xffff888237d1aed8 of 8 bytes by interrupt on cpu 1: clockevents_program_event+0x30/0x1e0 kernel/time/clockevents.c:313 tick_program_event+0x84/0xd0 kernel/time/tick-oneshot.c:44 hrtimer_interrupt+0x840/0xa70 kernel/time/hrtimer.c:1824 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1096 [inline] __sysvec_apic_timer_interrupt+0xa3/0x250 arch/x86/kernel/apic/apic.c:1113 sysvec_apic_timer_interrupt+0x88/0xb0 arch/x86/kernel/apic/apic.c:1107 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 check_kcov_mode kernel/kcov.c:175 [inline] write_comp_data kernel/kcov.c:236 [inline] __sanitizer_cov_trace_const_cmp1+0x33/0xa0 kernel/kcov.c:290 get_symbol_offset kernel/kallsyms.c:140 [inline] kallsyms_lookup_buildid+0x147/0x3e0 kernel/kallsyms.c:327 __sprint_symbol+0xa3/0x1f0 kernel/kallsyms.c:435 sprint_symbol_no_offset+0x1d/0x30 kernel/kallsyms.c:512 symbol_string+0xa4/0x250 lib/vsprintf.c:1006 pointer+0x646/0xb50 lib/vsprintf.c:2398 vsnprintf+0x905/0xe80 lib/vsprintf.c:2804 seq_vprintf+0x71/0xd0 fs/seq_file.c:391 SEQ_printf+0x87/0xc0 kernel/time/timer_list.c:38 print_timer kernel/time/timer_list.c:49 [inline] print_active_timers kernel/time/timer_list.c:91 [inline] print_base kernel/time/timer_list.c:112 [inline] print_cpu+0x27e/0x680 kernel/time/timer_list.c:123 timer_list_show+0x114/0x180 kernel/time/timer_list.c:291 seq_read_iter+0x2c3/0x8e0 fs/seq_file.c:230 proc_reg_read_iter+0xfa/0x170 fs/proc/inode.c:305 call_read_iter include/linux/fs.h:2185 [inline] generic_file_splice_read+0xde/0x2b0 fs/splice.c:309 do_splice_to fs/splice.c:793 [inline] splice_direct_to_actor+0x26c/0x620 fs/splice.c:865 do_splice_direct+0xfb/0x180 fs/splice.c:974 do_sendfile+0x3bf/0x910 fs/read_write.c:1255 __do_sys_sendfile64 fs/read_write.c:1323 [inline] __se_sys_sendfile64 fs/read_write.c:1309 [inline] __x64_sys_sendfile64+0x10c/0x150 fs/read_write.c:1309 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffff888237d1aed8 of 8 bytes by task 6441 on cpu 0: print_tickdevice+0x158/0x370 kernel/time/timer_list.c:204 timer_list_show+0x74/0x180 kernel/time/timer_list.c:296 seq_read_iter+0x676/0x8e0 fs/seq_file.c:272 proc_reg_read_iter+0xfa/0x170 fs/proc/inode.c:305 call_read_iter include/linux/fs.h:2185 [inline] generic_file_splice_read+0xde/0x2b0 fs/splice.c:309 do_splice_to fs/splice.c:793 [inline] splice_direct_to_actor+0x26c/0x620 fs/splice.c:865 do_splice_direct+0xfb/0x180 fs/splice.c:974 do_sendfile+0x3bf/0x910 fs/read_write.c:1255 __do_sys_sendfile64 fs/read_write.c:1323 [inline] __se_sys_sendfile64 fs/read_write.c:1309 [inline] __x64_sys_sendfile64+0x10c/0x150 fs/read_write.c:1309 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x7fffffffffffffff -> 0x0000003f86ebd742 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 6441 Comm: syz-executor.3 Not tainted 6.0.0-syzkaller-11990-g9c9155a3509a-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 ==================================================================