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BUG: KCSAN: data-race in clockevents_program_event / print_tickdevice

write to 0xffff888237c1aed8 of 8 bytes by interrupt on cpu 0:
 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
 should_watch kernel/kcsan/core.c:278 [inline]
 check_access kernel/kcsan/core.c:741 [inline]
 __tsan_read8+0x14e/0x180 kernel/kcsan/core.c:1014
 __rb_insert lib/rbtree.c:110 [inline]
 rb_insert_color+0x7e/0x2c0 lib/rbtree.c:436
 insert_entry fs/proc/proc_sysctl.c:186 [inline]
 insert_header+0x6ff/0x8e0 fs/proc/proc_sysctl.c:252
 __register_sysctl_table+0xc77/0xce0 fs/proc/proc_sysctl.c:1372
 register_net_sysctl+0x1b1/0x1c0 net/sysctl_net.c:169
 __addrconf_sysctl_register+0x1bc/0x2b0 net/ipv6/addrconf.c:7083
 addrconf_init_net+0x324/0x460 net/ipv6/addrconf.c:7202
 ops_init+0x215/0x2d0 net/core/net_namespace.c:135
 setup_net+0x2cb/0x810 net/core/net_namespace.c:332
 copy_net_ns+0x2a2/0x440 net/core/net_namespace.c:478
 create_new_namespaces+0x22c/0x450 kernel/nsproxy.c:110
 copy_namespaces+0x116/0x160 kernel/nsproxy.c:178
 copy_process+0xdeb/0x2100 kernel/fork.c:2256
 kernel_clone+0x166/0x550 kernel/fork.c:2671
 __do_sys_clone kernel/fork.c:2812 [inline]
 __se_sys_clone kernel/fork.c:2796 [inline]
 __x64_sys_clone+0xc3/0xf0 kernel/fork.c:2796
 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 0xffff888237c1aed8 of 8 bytes by task 1135 on cpu 1:
 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: 0x00000119463b855d -> 0x00000119463cd68c

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 1135 Comm: syz-executor.3 Not tainted 6.1.0-rc2-syzkaller-00063-g1a2dcbdde82e-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
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