================================================================== BUG: KCSAN: data-race in jbd2_journal_commit_transaction / jbd2_journal_stop write to 0xffff8881446c0800 of 8 bytes by task 4801 on cpu 0: jbd2_journal_commit_transaction+0x2962/0x3290 fs/jbd2/commit.c:1181 kjournald2+0x263/0x480 fs/jbd2/journal.c:213 kthread+0x20b/0x230 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 read to 0xffff8881446c0800 of 8 bytes by task 13003 on cpu 1: is_journal_aborted include/linux/jbd2.h:1647 [inline] is_handle_aborted include/linux/jbd2.h:1654 [inline] jbd2_journal_stop+0x12f/0x6d0 fs/jbd2/transaction.c:1807 __ext4_journal_stop+0x99/0x110 fs/ext4/ext4_jbd2.c:127 ext4_dirty_inode+0x9a/0xa0 fs/ext4/inode.c:5948 __mark_inode_dirty+0x72/0x6f0 fs/fs-writeback.c:2274 generic_update_time fs/inode.c:1766 [inline] update_time fs/inode.c:1779 [inline] touch_atime+0x1b3/0x2d0 fs/inode.c:1850 file_accessed include/linux/fs.h:2319 [inline] filemap_read+0x74f/0x7b0 mm/filemap.c:2530 generic_file_read_iter+0x82/0x410 mm/filemap.c:2609 ext4_file_read_iter+0x2e0/0x420 fs/ext4/file.c:74 call_read_iter include/linux/fs.h:1971 [inline] generic_file_splice_read+0x22a/0x310 fs/splice.c:311 do_splice_to fs/splice.c:796 [inline] splice_direct_to_actor+0x2aa/0x650 fs/splice.c:870 do_splice_direct+0xf5/0x170 fs/splice.c:979 do_sendfile+0x7a6/0xe20 fs/read_write.c:1260 __do_sys_sendfile64 fs/read_write.c:1325 [inline] __se_sys_sendfile64 fs/read_write.c:1311 [inline] __x64_sys_sendfile64+0xf2/0x130 fs/read_write.c:1311 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 13003 Comm: syz-executor.2 Not tainted 5.12.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================