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BUG: KCSAN: data-race in jbd2_journal_commit_transaction / jbd2_journal_dirty_metadata

write to 0xffff888106168000 of 8 bytes by task 4853 on cpu 0:
 jbd2_journal_commit_transaction+0x2982/0x32b0 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:296

read to 0xffff888106168000 of 8 bytes by task 11611 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+0xc1/0x5a0 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+0x4d6/0x5e0 fs/ext4/inode.c:5919
 __ext4_ext_dirty fs/ext4/extents.c:169 [inline]
 ext4_ext_insert_extent+0x1385/0x2bc0 fs/ext4/extents.c:2130
 ext4_split_extent_at+0x6f2/0xb40 fs/ext4/extents.c:3208
 ext4_force_split_extent_at fs/ext4/extents.c:305 [inline]
 ext4_swap_extents+0xc7f/0x13a0 fs/ext4/extents.c:5657
 move_extent_per_page+0xd1c/0x16c0 fs/ext4/move_extent.c:360
 ext4_move_extents+0xaac/0xc00 fs/ext4/move_extent.c:673
 __ext4_ioctl fs/ext4/ioctl.c:988 [inline]
 ext4_ioctl+0x20ec/0x3560 fs/ext4/ioctl.c:1322
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0xcb/0x140 fs/ioctl.c:739
 __x64_sys_ioctl+0x3f/0x50 fs/ioctl.c:739
 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 11611 Comm: syz-executor.5 Not tainted 5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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