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BUG: KCSAN: data-race in __mark_inode_dirty / __writeback_single_inode

read-write to 0xffff888106ae4ae0 of 8 bytes by task 3212 on cpu 1:
 __writeback_single_inode+0x201/0x870 fs/fs-writeback.c:1687
 writeback_sb_inodes+0x559/0xb20 fs/fs-writeback.c:1947
 wb_writeback+0x25e/0x720 fs/fs-writeback.c:2127
 wb_do_writeback fs/fs-writeback.c:2274 [inline]
 wb_workfn+0x1a8/0x940 fs/fs-writeback.c:2314
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3312
 worker_thread+0x526/0x730 kernel/workqueue.c:3393
 kthread+0x1d1/0x210 kernel/kthread.c:389
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

read to 0xffff888106ae4ae0 of 8 bytes by task 3260 on cpu 0:
 __mark_inode_dirty+0x19f/0x7e0 fs/fs-writeback.c:2508
 mark_buffer_dirty+0x165/0x250 fs/buffer.c:1211
 __block_commit_write fs/buffer.c:2200 [inline]
 block_write_end+0x158/0x2e0 fs/buffer.c:2276
 ext4_da_do_write_end fs/ext4/inode.c:2952 [inline]
 ext4_da_write_end+0x1ad/0x860 fs/ext4/inode.c:3025
 generic_perform_write+0x276/0x410 mm/filemap.c:4026
 ext4_buffered_write_iter+0x1f6/0x380 fs/ext4/file.c:299
 ext4_file_write_iter+0x29f/0xe30
 __kernel_write_iter+0x24f/0x4d0 fs/read_write.c:523
 dump_emit_page fs/coredump.c:893 [inline]
 dump_user_range+0x3a7/0x550 fs/coredump.c:954
 elf_core_dump+0x1aeb/0x1c30 fs/binfmt_elf.c:2083
 do_coredump+0xff6/0x1860 fs/coredump.c:767
 get_signal+0xdc1/0x1080 kernel/signal.c:2894
 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]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x59/0x130 kernel/entry/common.c:218
 do_syscall_64+0xd6/0x1c0 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x0000000000020087 -> 0x0000000000020084

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 3260 Comm: syz-executor.3 Not tainted 6.10.0-rc1-syzkaller-00104-gd8ec19857b09 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
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syz-executor.3 (3260) used greatest stack depth: 10328 bytes left