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BUG: KCSAN: data-race in __mark_inode_dirty / __mark_inode_dirty

write to 0xffff888107a92640 of 8 bytes by task 16985 on cpu 1:
 __mark_inode_dirty+0x256/0x7e0 fs/fs-writeback.c:2508
 generic_update_time fs/inode.c:1907 [inline]
 inode_update_time fs/inode.c:1920 [inline]
 touch_atime+0x231/0x350 fs/inode.c:1992
 file_accessed include/linux/fs.h:2457 [inline]
 ext4_file_mmap+0xde/0x120 fs/ext4/file.c:797
 call_mmap include/linux/fs.h:2113 [inline]
 mmap_region+0x9ab/0x1550 mm/mmap.c:2820
 do_mmap+0x6a6/0xac0 mm/mmap.c:1385
 vm_mmap_pgoff+0x12f/0x250 mm/util.c:573
 ksys_mmap_pgoff+0x2bd/0x340 mm/mmap.c:1431
 do_syscall_64+0xd3/0x1d0
 entry_SYSCALL_64_after_hwframe+0x6d/0x75

read to 0xffff888107a92640 of 8 bytes by task 16984 on cpu 0:
 __mark_inode_dirty+0x19f/0x7e0 fs/fs-writeback.c:2499
 generic_update_time fs/inode.c:1907 [inline]
 inode_update_time fs/inode.c:1920 [inline]
 __file_update_time fs/inode.c:2109 [inline]
 file_modified_flags+0x30f/0x340 fs/inode.c:2180
 file_modified+0x17/0x20 fs/inode.c:2196
 ext4_write_checks fs/ext4/file.c:279 [inline]
 ext4_buffered_write_iter+0x1d8/0x380 fs/ext4/file.c:295
 ext4_file_write_iter+0x29f/0xe30
 call_write_iter include/linux/fs.h:2108 [inline]
 new_sync_write fs/read_write.c:497 [inline]
 vfs_write+0x771/0x8e0 fs/read_write.c:590
 ksys_write+0xeb/0x1b0 fs/read_write.c:643
 __do_sys_write fs/read_write.c:655 [inline]
 __se_sys_write fs/read_write.c:652 [inline]
 __x64_sys_write+0x42/0x50 fs/read_write.c:652
 do_syscall_64+0xd3/0x1d0
 entry_SYSCALL_64_after_hwframe+0x6d/0x75

value changed: 0x0000000000000000 -> 0x0000000000000001

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 16984 Comm: syz-executor.3 Tainted: G        W          6.8.0-syzkaller-11752-gdba89d1b81df #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
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