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BUG: KCSAN: data-race in jbd2_journal_commit_transaction / jbd2_log_wait_commit

write to 0xffff888102ac8468 of 4 bytes by task 346 on cpu 0:
 jbd2_journal_commit_transaction+0x2ad5/0x3430 fs/jbd2/commit.c:1154
 kjournald2+0x268/0x490 fs/jbd2/journal.c:213
 kthread+0x262/0x280 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30

read to 0xffff888102ac8468 of 4 bytes by task 28683 on cpu 1:
 jbd2_log_wait_commit+0xb3/0x210 fs/jbd2/journal.c:712
 jbd2_complete_transaction+0x101/0x110 fs/jbd2/journal.c:846
 ext4_fc_commit+0x24e/0x14c0 fs/ext4/fast_commit.c:1215
 ext4_fsync_journal fs/ext4/fsync.c:115 [inline]
 ext4_sync_file+0x336/0x670 fs/ext4/fsync.c:174
 vfs_fsync_range+0x107/0x120 fs/sync.c:200
 generic_write_sync include/linux/fs.h:2955 [inline]
 ext4_buffered_write_iter+0x3af/0x400 fs/ext4/file.c:277
 ext4_file_write_iter+0x2e7/0x11f0
 call_write_iter include/linux/fs.h:2163 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x7bc/0x900 fs/read_write.c:594
 ksys_write+0xd9/0x190 fs/read_write.c:647
 __do_sys_write fs/read_write.c:659 [inline]
 __se_sys_write fs/read_write.c:656 [inline]
 __x64_sys_write+0x3e/0x50 fs/read_write.c:656
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x000040ef -> 0x000040f0

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 28683 Comm: syz-executor.2 Tainted: G        W         5.15.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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