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BUG: KCSAN: data-race in jbd2_journal_commit_transaction / jbd2_journal_get_write_access

write to 0xffff888144888800 of 8 bytes by task 4854 on cpu 0:
 jbd2_journal_commit_transaction+0x238/0x32b0 syzkaller/managers/upstream-kcsan-gce/kernel/fs/jbd2/commit.c:443
 kjournald2+0x263/0x480 syzkaller/managers/upstream-kcsan-gce/kernel/fs/jbd2/journal.c:213
 kthread+0x20b/0x230 syzkaller/managers/upstream-kcsan-gce/kernel/kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 syzkaller/managers/upstream-kcsan-gce/kernel/arch/x86/entry/entry_64.S:296

read to 0xffff888144888800 of 8 bytes by task 16921 on cpu 1:
 is_journal_aborted syzkaller/managers/upstream-kcsan-gce/kernel/./include/linux/jbd2.h:1647 [inline]
 is_handle_aborted syzkaller/managers/upstream-kcsan-gce/kernel/./include/linux/jbd2.h:1654 [inline]
 jbd2_journal_get_write_access+0x60/0x1c0 syzkaller/managers/upstream-kcsan-gce/kernel/fs/jbd2/transaction.c:1201
 __ext4_journal_get_write_access+0x17e/0x2c0 syzkaller/managers/upstream-kcsan-gce/kernel/fs/ext4/ext4_jbd2.c:231
 ext4_reserve_inode_write+0x144/0x1f0 syzkaller/managers/upstream-kcsan-gce/kernel/fs/ext4/inode.c:5747
 __ext4_mark_inode_dirty+0x6f/0x5e0 syzkaller/managers/upstream-kcsan-gce/kernel/fs/ext4/inode.c:5911
 ext4_dirty_inode+0xa6/0xc0 syzkaller/managers/upstream-kcsan-gce/kernel/fs/ext4/inode.c:5955
 __mark_inode_dirty+0x72/0x6b0 syzkaller/managers/upstream-kcsan-gce/kernel/fs/fs-writeback.c:2262
 generic_update_time syzkaller/managers/upstream-kcsan-gce/kernel/fs/inode.c:1763 [inline]
 update_time syzkaller/managers/upstream-kcsan-gce/kernel/fs/inode.c:1776 [inline]
 file_update_time+0x3ac/0x3f0 syzkaller/managers/upstream-kcsan-gce/kernel/fs/inode.c:1991
 file_modified+0x62/0x80 syzkaller/managers/upstream-kcsan-gce/kernel/fs/inode.c:2014
 ext4_write_checks syzkaller/managers/upstream-kcsan-gce/kernel/fs/ext4/file.c:248 [inline]
 ext4_buffered_write_iter+0x1f9/0x3e0 syzkaller/managers/upstream-kcsan-gce/kernel/fs/ext4/file.c:265
 ext4_file_write_iter+0x47a/0x1060 syzkaller/managers/upstream-kcsan-gce/kernel/fs/ext4/file.c:503
 call_write_iter syzkaller/managers/upstream-kcsan-gce/kernel/./include/linux/fs.h:1901 [inline]
 do_iter_readv_writev+0x2cb/0x360 syzkaller/managers/upstream-kcsan-gce/kernel/fs/read_write.c:740
 do_iter_write+0x112/0x4c0 syzkaller/managers/upstream-kcsan-gce/kernel/fs/read_write.c:866
 vfs_iter_write+0x4c/0x70 syzkaller/managers/upstream-kcsan-gce/kernel/fs/read_write.c:907
 iter_file_splice_write+0x41a/0x770 syzkaller/managers/upstream-kcsan-gce/kernel/fs/splice.c:686
 do_splice_from syzkaller/managers/upstream-kcsan-gce/kernel/fs/splice.c:764 [inline]
 direct_splice_actor+0x80/0xa0 syzkaller/managers/upstream-kcsan-gce/kernel/fs/splice.c:933
 splice_direct_to_actor+0x345/0x650 syzkaller/managers/upstream-kcsan-gce/kernel/fs/splice.c:888
 do_splice_direct+0xf5/0x170 syzkaller/managers/upstream-kcsan-gce/kernel/fs/splice.c:976
 do_sendfile+0x5e0/0xcf0 syzkaller/managers/upstream-kcsan-gce/kernel/fs/read_write.c:1257
 __do_sys_sendfile64 syzkaller/managers/upstream-kcsan-gce/kernel/fs/read_write.c:1312 [inline]
 __se_sys_sendfile64 syzkaller/managers/upstream-kcsan-gce/kernel/fs/read_write.c:1304 [inline]
 __x64_sys_sendfile64+0xa9/0x130 syzkaller/managers/upstream-kcsan-gce/kernel/fs/read_write.c:1304
 do_syscall_64+0x39/0x80 syzkaller/managers/upstream-kcsan-gce/kernel/arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 16921 Comm: syz-executor.2 Not tainted 5.11.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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