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BUG: KCSAN: data-race in jbd2_journal_commit_transaction / jbd2_journal_dirty_metadata

write to 0xffff8881022ec000 of 8 bytes by task 4774 on cpu 0:
 jbd2_journal_commit_transaction+0x2962/0x3290 fs/jbd2/commit.c:1181
 kjournald2+0x263/0x480 fs/jbd2/journal.c:213
 kthread+0x20b/0x230 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

read to 0xffff8881022ec000 of 8 bytes by task 9755 on cpu 1:
 is_journal_aborted include/linux/jbd2.h:1647 [inline]
 is_handle_aborted include/linux/jbd2.h:1654 [inline]
 jbd2_journal_dirty_metadata+0x5e/0x670 fs/jbd2/transaction.c:1458
 __ext4_handle_dirty_metadata+0xc6/0x590 fs/ext4/ext4_jbd2.c:331
 ext4_do_update_inode fs/ext4/inode.c:5144 [inline]
 ext4_mark_iloc_dirty+0x12f2/0x16f0 fs/ext4/inode.c:5725
 __ext4_mark_inode_dirty+0x4db/0x5e0 fs/ext4/inode.c:5919
 ext4_convert_unwritten_extents+0x1f9/0x2c0 fs/ext4/extents.c:4768
 ext4_convert_unwritten_io_end_vec+0xa4/0x130 fs/ext4/extents.c:4799
 ext4_end_io_end fs/ext4/page-io.c:184 [inline]
 ext4_do_flush_completed_IO fs/ext4/page-io.c:257 [inline]
 ext4_end_io_rsv_work+0x198/0x360 fs/ext4/page-io.c:271
 process_one_work+0x3e1/0x950 kernel/workqueue.c:2275
 worker_thread+0x616/0xa70 kernel/workqueue.c:2421
 kthread+0x20b/0x230 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 9755 Comm: kworker/u4:5 Not tainted 5.11.0-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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