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BUG: KCSAN: data-race in tick_nohz_handler / tick_nohz_handler

write to 0xffffffff8652ebb0 of 4 bytes by interrupt on cpu 1:
 tick_sched_do_timer kernel/time/tick-sched.c:224 [inline]
 tick_nohz_handler+0x2bc/0x2d0 kernel/time/tick-sched.c:287
 __run_hrtimer kernel/time/hrtimer.c:1692 [inline]
 __hrtimer_run_queues+0x214/0x5e0 kernel/time/hrtimer.c:1756
 hrtimer_interrupt+0x3db/0x7b0 kernel/time/hrtimer.c:1818
 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
 arch_atomic64_read arch/x86/include/asm/atomic64_64.h:15 [inline]
 raw_atomic64_read include/linux/atomic/atomic-arch-fallback.h:2583 [inline]
 raw_atomic_long_read include/linux/atomic/atomic-long.h:38 [inline]
 atomic_long_read include/linux/atomic/atomic-instrumented.h:3189 [inline]
 find_watchpoint kernel/kcsan/core.c:131 [inline]
 check_access kernel/kcsan/core.c:737 [inline]
 __tsan_read4+0x2c/0x180 kernel/kcsan/core.c:1024
 crc32_body lib/crc32.c:106 [inline]
 crc32_le_generic lib/crc32.c:179 [inline]
 __crc32c_le_base+0xa3/0x520 lib/crc32.c:201
 chksum_update+0x32/0x50 crypto/crc32c_generic.c:88
 crypto_shash_update+0x4a/0x60 crypto/shash.c:70
 jbd2_chksum include/linux/jbd2.h:1801 [inline]
 jbd2_block_tag_csum_set fs/jbd2/commit.c:334 [inline]
 jbd2_journal_commit_transaction+0x1238/0x33d0 fs/jbd2/commit.c:684
 kjournald2+0x243/0x430 fs/jbd2/journal.c:201
 kthread+0x1d1/0x210 kernel/kthread.c:388
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243

read to 0xffffffff8652ebb0 of 4 bytes by interrupt on cpu 0:
 tick_sched_do_timer kernel/time/tick-sched.c:220 [inline]
 tick_nohz_handler+0x3d/0x2d0 kernel/time/tick-sched.c:287
 __run_hrtimer kernel/time/hrtimer.c:1692 [inline]
 __hrtimer_run_queues+0x214/0x5e0 kernel/time/hrtimer.c:1756
 hrtimer_interrupt+0x3db/0x7b0 kernel/time/hrtimer.c:1818
 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
 check_access kernel/kcsan/core.c:787 [inline]
 __tsan_read4+0x11e/0x180 kernel/kcsan/core.c:1024
 crc32_body lib/crc32.c:110 [inline]
 crc32_le_generic lib/crc32.c:179 [inline]
 __crc32c_le_base+0xf6/0x520 lib/crc32.c:201
 chksum_update+0x32/0x50 crypto/crc32c_generic.c:88
 crypto_shash_update+0x4a/0x60 crypto/shash.c:70
 ext4_chksum fs/ext4/ext4.h:2476 [inline]
 ext4_extent_block_csum fs/ext4/extents.c:56 [inline]
 ext4_extent_block_csum_set+0x157/0x240 fs/ext4/extents.c:84
 __ext4_ext_dirty+0x6f/0x130 fs/ext4/extents.c:193
 ext4_ext_insert_extent+0x1ba7/0x2720 fs/ext4/extents.c:2178
 ext4_ext_map_blocks+0x11a6/0x33b0 fs/ext4/extents.c:4338
 ext4_map_blocks+0x72a/0xf50 fs/ext4/inode.c:623
 mpage_map_one_extent fs/ext4/inode.c:2163 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2216 [inline]
 ext4_do_writepages+0xd85/0x2110 fs/ext4/inode.c:2679
 ext4_writepages+0x159/0x2e0 fs/ext4/inode.c:2768
 do_writepages+0x1d8/0x480 mm/page-writeback.c:2612
 filemap_fdatawrite_wbc+0xdb/0x100 mm/filemap.c:397
 __filemap_fdatawrite_range mm/filemap.c:430 [inline]
 file_write_and_wait_range+0xc8/0x170 mm/filemap.c:788
 ext4_sync_file+0x134/0x6c0 fs/ext4/fsync.c:158
 vfs_fsync_range+0x122/0x140 fs/sync.c:188
 generic_write_sync include/linux/fs.h:2795 [inline]
 ext4_buffered_write_iter+0x338/0x380 fs/ext4/file.c:305
 ext4_file_write_iter+0x29f/0xe30
 __kernel_write_iter+0x265/0x490 fs/read_write.c:523
 dump_emit_page fs/coredump.c:890 [inline]
 dump_user_range+0x3a7/0x550 fs/coredump.c:951
 elf_core_dump+0x1aa6/0x1bc0 fs/binfmt_elf.c:2077
 do_coredump+0x1033/0x1890 fs/coredump.c:764
 get_signal+0xdc1/0x1080 kernel/signal.c:2896
 arch_do_signal_or_restart+0x95/0x4b0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 irqentry_exit_to_user_mode+0x94/0x130 kernel/entry/common.c:231
 irqentry_exit+0x12/0x50 kernel/entry/common.c:334
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623

value changed: 0xffffffff -> 0x00000001

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 7069 Comm: syz-executor.1 Tainted: G        W          6.9.0-rc2-syzkaller-00413-gf2f80ac80987 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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