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BUG: KCSAN: data-race in jbd2_journal_commit_transaction / jbd2_log_wait_commit

write to 0xffff888103eae468 of 4 bytes by task 1405 on cpu 0:
 jbd2_journal_commit_transaction+0x2805/0x3180 fs/jbd2/commit.c:1143
 kjournald2+0x253/0x460 fs/jbd2/journal.c:213
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30

read to 0xffff888103eae468 of 4 bytes by task 5583 on cpu 1:
 jbd2_log_wait_commit+0x108/0x220 fs/jbd2/journal.c:712
 jbd2_complete_transaction+0xfb/0x110 fs/jbd2/journal.c:848
 ext4_fc_commit+0x43d/0x14f0
 ext4_fsync_journal fs/ext4/fsync.c:115 [inline]
 ext4_sync_file+0x326/0x6d0 fs/ext4/fsync.c:174
 vfs_fsync_range+0x107/0x120 fs/sync.c:188
 generic_write_sync include/linux/fs.h:2732 [inline]
 ext4_buffered_write_iter+0x2ec/0x330 fs/ext4/file.c:277
 ext4_file_write_iter+0x2e3/0x1210
 do_iter_readv_writev+0x27b/0x300
 do_iter_write+0x16f/0x5c0 fs/read_write.c:852
 vfs_iter_write+0x4c/0x70 fs/read_write.c:893
 iter_file_splice_write+0x44a/0x7c0 fs/splice.c:689
 do_splice_from fs/splice.c:767 [inline]
 direct_splice_actor+0x80/0xa0 fs/splice.c:936
 splice_direct_to_actor+0x345/0x660 fs/splice.c:891
 do_splice_direct+0xfb/0x180 fs/splice.c:979
 do_sendfile+0x3ad/0x900 fs/read_write.c:1246
 __do_sys_sendfile64 fs/read_write.c:1311 [inline]
 __se_sys_sendfile64 fs/read_write.c:1297 [inline]
 __x64_sys_sendfile64+0x10c/0x150 fs/read_write.c:1297
 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

value changed: 0x00001a0b -> 0x00001a0c

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 5583 Comm: syz-executor.3 Not tainted 5.18.0-rc6-syzkaller-00009-gfeb9c5e19e91 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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