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BUG: KCSAN: data-race in ext4_mark_iloc_dirty / ext4_mark_iloc_dirty

write to 0xffff888136106468 of 4 bytes by task 6069 on cpu 1:
 ext4_update_inode_fsync_trans fs/ext4/ext4_jbd2.h:445 [inline]
 ext4_do_update_inode fs/ext4/inode.c:5162 [inline]
 ext4_mark_iloc_dirty+0x75d/0x860 fs/ext4/inode.c:5724
 __ext4_mark_inode_dirty+0x452/0x610 fs/ext4/inode.c:5920
 ext4_dirty_inode+0x86/0xa0 fs/ext4/inode.c:5949
 __mark_inode_dirty+0x70/0x5f0 fs/fs-writeback.c:2367
 mark_inode_dirty include/linux/fs.h:2324 [inline]
 generic_write_end+0x168/0x230 fs/buffer.c:2199
 ext4_da_write_end+0x26c/0x620 fs/ext4/inode.c:3068
 generic_perform_write+0x26a/0x3f0 mm/filemap.c:3798
 ext4_buffered_write_iter+0x222/0x330 fs/ext4/file.c:270
 ext4_file_write_iter+0x2e3/0x1210
 call_write_iter include/linux/fs.h:2050 [inline]
 new_sync_write fs/read_write.c:504 [inline]
 vfs_write+0x71c/0x890 fs/read_write.c:591
 ksys_write+0xe8/0x1a0 fs/read_write.c:644
 __do_sys_write fs/read_write.c:656 [inline]
 __se_sys_write fs/read_write.c:653 [inline]
 __x64_sys_write+0x3e/0x50 fs/read_write.c:653
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

write to 0xffff888136106468 of 4 bytes by task 8 on cpu 0:
 ext4_update_inode_fsync_trans fs/ext4/ext4_jbd2.h:445 [inline]
 ext4_do_update_inode fs/ext4/inode.c:5162 [inline]
 ext4_mark_iloc_dirty+0x75d/0x860 fs/ext4/inode.c:5724
 __ext4_mark_inode_dirty+0x452/0x610 fs/ext4/inode.c:5920
 __ext4_ext_dirty fs/ext4/extents.c:183 [inline]
 ext4_convert_unwritten_extents_endio fs/ext4/extents.c:3767 [inline]
 ext4_ext_handle_unwritten_extents+0x759/0xb20 fs/ext4/extents.c:3892
 ext4_ext_map_blocks+0x73a/0x1bb0 fs/ext4/extents.c:4162
 ext4_map_blocks+0x75b/0xfc0 fs/ext4/inode.c:636
 ext4_convert_unwritten_extents+0x17a/0x2e0 fs/ext4/extents.c:4805
 ext4_convert_unwritten_io_end_vec+0xa4/0x130 fs/ext4/extents.c:4844
 ext4_end_io_end fs/ext4/page-io.c:186 [inline]
 ext4_do_flush_completed_IO fs/ext4/page-io.c:259 [inline]
 ext4_end_io_rsv_work+0x1b0/0x3a0 fs/ext4/page-io.c:273
 process_one_work+0x3d3/0x720 kernel/workqueue.c:2289
 worker_thread+0x618/0xa70 kernel/workqueue.c:2436
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30

value changed: 0x000123e8 -> 0x000123e9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 8 Comm: kworker/u4:0 Not tainted 5.18.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: ext4-rsv-conversion ext4_end_io_rsv_work
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