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BUG: KCSAN: data-race in hrtimer_interrupt / print_cpu

write to 0xffff888237c1ffa0 of 8 bytes by interrupt on cpu 0:
 hrtimer_interrupt+0x18c/0x7b0 kernel/time/hrtimer.c:1805
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x5c/0x1a0 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x6e/0x80 arch/x86/kernel/apic/apic.c:1043
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
 kcsan_setup_watchpoint+0x404/0x410 kernel/kcsan/core.c:705
 crc32_body lib/crc32.c:110 [inline]
 crc32_le_generic lib/crc32.c:179 [inline]
 __crc32c_le_base+0x10e/0x520 lib/crc32.c:201
 chksum_update+0x32/0x50 crypto/crc32c_generic.c:88
 crypto_shash_update+0x4a/0x60 crypto/shash.c:52
 ext4_chksum fs/ext4/ext4.h:2479 [inline]
 ext4_block_bitmap_csum_set+0x13e/0x260 fs/ext4/bitmap.c:91
 ext4_mb_mark_context+0x716/0x9b0 fs/ext4/mballoc.c:4051
 ext4_mb_clear_bb fs/ext4/mballoc.c:6469 [inline]
 ext4_free_blocks+0x801/0x14b0 fs/ext4/mballoc.c:6653
 ext4_remove_blocks fs/ext4/extents.c:2521 [inline]
 ext4_ext_rm_leaf fs/ext4/extents.c:2686 [inline]
 ext4_ext_remove_space+0x1851/0x2a90 fs/ext4/extents.c:2934
 ext4_ext_truncate+0xc4/0x150 fs/ext4/extents.c:4441
 ext4_truncate+0x773/0xb10 fs/ext4/inode.c:4139
 ext4_evict_inode+0x8b4/0xdd0 fs/ext4/inode.c:258
 evict+0x1ae/0x420 fs/inode.c:667
 iput_final fs/inode.c:1741 [inline]
 iput+0x432/0x5c0 fs/inode.c:1767
 d_delete_notify include/linux/fsnotify.h:326 [inline]
 vfs_rmdir+0x29c/0x320 fs/namei.c:4227
 do_rmdir+0x194/0x320 fs/namei.c:4273
 __do_sys_unlinkat fs/namei.c:4449 [inline]
 __se_sys_unlinkat fs/namei.c:4443 [inline]
 __x64_sys_unlinkat+0xa4/0xb0 fs/namei.c:4443
 x64_sys_call+0x2637/0x2d70 arch/x86/include/generated/asm/syscalls_64.h:264
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff888237c1ffa0 of 8 bytes by task 18193 on cpu 1:
 print_cpu+0x2fb/0x670 kernel/time/timer_list.c:133
 timer_list_show+0x115/0x180 kernel/time/timer_list.c:295
 seq_read_iter+0x2d7/0x940 fs/seq_file.c:230
 proc_reg_read_iter+0x11e/0x190 fs/proc/inode.c:299
 new_sync_read fs/read_write.c:395 [inline]
 vfs_read+0x5e6/0x6e0 fs/read_write.c:476
 ksys_pread64 fs/read_write.c:671 [inline]
 __do_sys_pread64 fs/read_write.c:681 [inline]
 __se_sys_pread64 fs/read_write.c:678 [inline]
 __x64_sys_pread64+0xf7/0x150 fs/read_write.c:678
 x64_sys_call+0x2673/0x2d70 arch/x86/include/generated/asm/syscalls_64.h:18
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x0000004655f79680 -> 0x0000004656902d00

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 18193 Comm: syz-executor.0 Not tainted 6.10.0-rc2-syzkaller-00222-gd30d0e49da71 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
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