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BUG: KCSAN: data-race in jbd2_journal_file_inode / jbd2_journal_finish_inode_data_buffers

write to 0xffff88811dfd93f8 of 8 bytes by task 4991 on cpu 0:
 jbd2_journal_file_inode+0x17a/0x340
 jbd2_journal_inode_ranged_write+0x30/0x40 fs/jbd2/transaction.c:2705
 ext4_jbd2_inode_add_write fs/ext4/ext4_jbd2.h:424 [inline]
 ext4_map_blocks+0xdce/0xf00 fs/ext4/inode.c:739
 ext4_iomap_alloc fs/ext4/inode.c:3368 [inline]
 ext4_iomap_begin+0x4b0/0x630 fs/ext4/inode.c:3418
 iomap_iter+0x39c/0x470 fs/iomap/iter.c:74
 __iomap_dio_rw+0xbe3/0x1010 fs/iomap/direct-io.c:568
 iomap_dio_rw+0x30/0x70 fs/iomap/direct-io.c:649
 ext4_dio_write_iter fs/ext4/file.c:568 [inline]
 ext4_file_write_iter+0xaa9/0x11f0 fs/ext4/file.c:678
 call_write_iter include/linux/fs.h:2163 [inline]
 do_iter_readv_writev+0x2de/0x380 fs/read_write.c:729
 do_iter_write+0x192/0x5c0 fs/read_write.c:855
 vfs_iter_write+0x4c/0x70 fs/read_write.c:896
 iter_file_splice_write+0x43a/0x790 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+0x345/0x650 fs/splice.c:891
 do_splice_direct+0x106/0x190 fs/splice.c:979
 do_sendfile+0x63e/0xbb0 fs/read_write.c:1249
 __do_sys_sendfile64 fs/read_write.c:1314 [inline]
 __se_sys_sendfile64 fs/read_write.c:1300 [inline]
 __x64_sys_sendfile64+0x102/0x140 fs/read_write.c:1300
 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

read to 0xffff88811dfd93f8 of 8 bytes by task 346 on cpu 1:
 jbd2_journal_finish_inode_data_buffers+0x3d/0x60 fs/jbd2/commit.c:276
 ext4_journal_finish_inode_data_buffers+0x41/0x60 fs/ext4/super.c:540
 journal_finish_inode_data_buffers fs/jbd2/commit.c:299 [inline]
 jbd2_journal_commit_transaction+0x16c8/0x3430 fs/jbd2/commit.c:786
 kjournald2+0x268/0x490 fs/jbd2/journal.c:213
 kthread+0x262/0x280 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30

value changed: 0x00000000000a1fff -> 0x00000000000a2fff

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 346 Comm: jbd2/sda1-8 Not tainted 5.15.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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