================================================================== BUG: KCSAN: data-race in jbd2_journal_commit_transaction / jbd2_journal_dirty_metadata write to 0xffff888144887800 of 8 bytes by task 4852 on cpu 1: jbd2_journal_commit_transaction+0x2982/0x32b0 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:296 read to 0xffff888144887800 of 8 bytes by task 8765 on cpu 0: is_journal_aborted include/linux/jbd2.h:1647 [inline] is_handle_aborted include/linux/jbd2.h:1654 [inline] jbd2_journal_dirty_metadata+0x5e/0x670 fs/jbd2/transaction.c:1458 __ext4_handle_dirty_metadata+0xc1/0x5a0 fs/ext4/ext4_jbd2.c:331 ext4_getblk+0x2c7/0x3c0 fs/ext4/inode.c:882 ext4_bread+0x28/0x130 fs/ext4/inode.c:899 ext4_append+0xd1/0x1c0 fs/ext4/namei.c:67 ext4_init_new_dir+0x177/0x500 fs/ext4/namei.c:2758 ext4_mkdir+0x329/0x750 fs/ext4/namei.c:2803 vfs_mkdir+0x288/0x350 fs/namei.c:3652 do_mkdirat+0x132/0x220 fs/namei.c:3675 __do_sys_mkdir fs/namei.c:3691 [inline] __se_sys_mkdir fs/namei.c:3689 [inline] __x64_sys_mkdir+0x32/0x40 fs/namei.c:3689 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 8765 Comm: syz-executor.1 Not tainted 5.11.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================