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BUG: KCSAN: data-race in hrtimer_interrupt / print_tickdevice

write to 0xffff888237c179e0 of 8 bytes by interrupt on cpu 0:
 hrtimer_interrupt+0x6b/0x810 kernel/time/hrtimer.c:2194
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1051 [inline]
 __sysvec_apic_timer_interrupt+0x5f/0x1c0 arch/x86/kernel/apic/apic.c:1068
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0x6f/0x80 arch/x86/kernel/apic/apic.c:1062
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
 __preempt_count_add arch/x86/include/asm/preempt.h:80 [inline]
 __local_bh_disable_ip include/linux/bottom_half.h:13 [inline]
 local_bh_disable include/linux/bottom_half.h:20 [inline]
 __tcp_close+0x7bc/0x1120 net/ipv4/tcp.c:3230
 tcp_close+0x28/0xd0 net/ipv4/tcp.c:3311
 inet_release+0xcd/0xf0 net/ipv4/af_inet.c:442
 __sock_release net/socket.c:710 [inline]
 sock_close+0x6b/0x150 net/socket.c:1501
 __fput+0x29e/0x630 fs/file_table.c:512
 fput_close_sync+0xad/0x190 fs/file_table.c:617
 __do_sys_close fs/open.c:1511 [inline]
 __se_sys_close fs/open.c:1496 [inline]
 __x64_sys_close+0x55/0xf0 fs/open.c:1496
 x64_sys_call+0x275d/0x3020 arch/x86/include/generated/asm/syscalls_64.h:4
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x136/0x3c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff888237c179e0 of 8 bytes by task 20459 on cpu 1:
 print_tickdevice+0x144/0x340 kernel/time/timer_list.c:200
 timer_list_show+0x6c/0x170 kernel/time/timer_list.c:292
 seq_read_iter+0x5f6/0x8f0 fs/seq_file.c:273
 proc_reg_read_iter+0x110/0x180 fs/proc/inode.c:299
 copy_splice_read+0x47a/0x6b0 fs/splice.c:362
 do_splice_read fs/splice.c:980 [inline]
 splice_direct_to_actor+0x261/0x680 fs/splice.c:1084
 do_splice_direct_actor fs/splice.c:1202 [inline]
 do_splice_direct+0x119/0x1a0 fs/splice.c:1228
 do_sendfile+0x37d/0x640 fs/read_write.c:1371
 __do_sys_sendfile64 fs/read_write.c:1432 [inline]
 __se_sys_sendfile64 fs/read_write.c:1418 [inline]
 __x64_sys_sendfile64+0x105/0x150 fs/read_write.c:1418
 x64_sys_call+0x2dc4/0x3020 arch/x86/include/generated/asm/syscalls_64.h:41
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x136/0x3c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x0000008c9d6fcebe -> 0x0000008c9da11100

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 20459 Comm: syz.5.5008 Tainted: G        W           syzkaller #0 PREEMPT(lazy) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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