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BUG: KCSAN: data-race in jbd2_journal_commit_transaction / jbd2_log_wait_commit

write to 0xffff888103015468 of 4 bytes by task 346 on cpu 1:
 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 0xffff888103015468 of 4 bytes by task 11126 on cpu 0:
 jbd2_log_wait_commit+0x100/0x210 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
 __kernel_write+0x32e/0x5e0 fs/read_write.c:539
 do_acct_process+0xb27/0xcc0 kernel/acct.c:519
 slow_acct_process kernel/acct.c:578 [inline]
 acct_process+0x1ed/0x260 kernel/acct.c:602
 do_exit+0x3f9/0x14a0 kernel/exit.c:815
 do_group_exit+0xce/0x1a0 kernel/exit.c:922
 get_signal+0xf63/0x15a0 kernel/signal.c:2855
 arch_do_signal_or_restart+0x8c/0x280 arch/x86/kernel/signal.c:865
 handle_signal_work kernel/entry/common.c:148 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
 exit_to_user_mode_prepare+0x109/0x190 kernel/entry/common.c:207
 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
 syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:300
 do_syscall_64+0x50/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x00014a1d -> 0x00014a1e

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 11126 Comm: syz-executor.3 Not tainted 5.15.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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