================================================================== BUG: KCSAN: data-race in jbd2_journal_dirty_metadata / jbd2_journal_dirty_metadata write to 0xffff888105f14864 of 4 bytes by task 1827 on cpu 0: jbd2_journal_dirty_metadata+0x2f6/0x690 fs/jbd2/transaction.c:1538 __ext4_handle_dirty_metadata+0xfb/0x5a0 fs/ext4/ext4_jbd2.c:348 ext4_do_update_inode fs/ext4/inode.c:5106 [inline] ext4_mark_iloc_dirty+0x513/0x890 fs/ext4/inode.c:5694 __ext4_mark_inode_dirty+0x4ec/0x5f0 fs/ext4/inode.c:5890 ext4_dirty_inode+0x86/0xa0 fs/ext4/inode.c:5919 __mark_inode_dirty+0x72/0x6c0 fs/fs-writeback.c:2399 generic_update_time fs/inode.c:1782 [inline] inode_update_time fs/inode.c:1795 [inline] touch_atime+0x1c4/0x2e0 fs/inode.c:1867 file_accessed include/linux/fs.h:2505 [inline] iterate_dir+0x36d/0x3c0 fs/readdir.c:70 __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64+0x8e/0x1a0 fs/readdir.c:354 __x64_sys_getdents64+0x3f/0x50 fs/readdir.c:354 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888105f14864 of 4 bytes by task 1829 on cpu 1: jbd2_journal_dirty_metadata+0x16f/0x690 fs/jbd2/transaction.c:1506 __ext4_handle_dirty_metadata+0xfb/0x5a0 fs/ext4/ext4_jbd2.c:348 ext4_do_update_inode fs/ext4/inode.c:5106 [inline] ext4_mark_iloc_dirty+0x513/0x890 fs/ext4/inode.c:5694 __ext4_mark_inode_dirty+0x4ec/0x5f0 fs/ext4/inode.c:5890 ext4_dirty_inode+0x86/0xa0 fs/ext4/inode.c:5919 __mark_inode_dirty+0x72/0x6c0 fs/fs-writeback.c:2399 generic_update_time fs/inode.c:1782 [inline] inode_update_time fs/inode.c:1795 [inline] touch_atime+0x1c4/0x2e0 fs/inode.c:1867 file_accessed include/linux/fs.h:2505 [inline] iterate_dir+0x36d/0x3c0 fs/readdir.c:70 __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64+0x8e/0x1a0 fs/readdir.c:354 __x64_sys_getdents64+0x3f/0x50 fs/readdir.c:354 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00000000 -> 0x00000001 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 1829 Comm: syz-executor.2 Not tainted 5.16.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================