================================================================== BUG: KCSAN: data-race in jbd2_journal_dirty_metadata / jbd2_journal_dirty_metadata write to 0xffff888103e3abe4 of 4 bytes by task 11595 on cpu 1: jbd2_journal_dirty_metadata+0x2f6/0x690 fs/jbd2/transaction.c:1538 __ext4_handle_dirty_metadata+0xfb/0x5a0 fs/ext4/ext4_jbd2.c:350 ext4_do_update_inode fs/ext4/inode.c:5095 [inline] ext4_mark_iloc_dirty+0x513/0x890 fs/ext4/inode.c:5677 __ext4_mark_inode_dirty+0x4ec/0x5f0 fs/ext4/inode.c:5873 ext4_dirty_inode+0x86/0xa0 fs/ext4/inode.c:5902 __mark_inode_dirty+0x72/0x6c0 fs/fs-writeback.c:2409 generic_update_time fs/inode.c:1856 [inline] inode_update_time fs/inode.c:1869 [inline] touch_atime+0x1c4/0x2e0 fs/inode.c:1941 file_accessed include/linux/fs.h:2421 [inline] filemap_read+0x13a7/0x1430 mm/filemap.c:2744 generic_file_read_iter+0x72/0x320 mm/filemap.c:2822 ext4_file_read_iter+0x1db/0x290 call_read_iter include/linux/fs.h:2068 [inline] generic_file_splice_read+0x24f/0x330 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+0x106/0x190 fs/splice.c:979 do_sendfile+0x675/0xc40 fs/read_write.c:1245 __do_sys_sendfile64 fs/read_write.c:1310 [inline] __se_sys_sendfile64 fs/read_write.c:1296 [inline] __x64_sys_sendfile64+0x102/0x140 fs/read_write.c:1296 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 0xffff888103e3abe4 of 4 bytes by task 11573 on cpu 0: jbd2_journal_dirty_metadata+0x16f/0x690 fs/jbd2/transaction.c:1506 __ext4_handle_dirty_metadata+0xfb/0x5a0 fs/ext4/ext4_jbd2.c:350 ext4_do_update_inode fs/ext4/inode.c:5095 [inline] ext4_mark_iloc_dirty+0x513/0x890 fs/ext4/inode.c:5677 __ext4_mark_inode_dirty+0x4ec/0x5f0 fs/ext4/inode.c:5873 ext4_dirty_inode+0x86/0xa0 fs/ext4/inode.c:5902 __mark_inode_dirty+0x72/0x6c0 fs/fs-writeback.c:2409 mark_inode_dirty include/linux/fs.h:2367 [inline] generic_write_end+0x157/0x180 fs/buffer.c:2203 ext4_da_write_end+0x4de/0x630 fs/ext4/inode.c:3042 generic_perform_write+0x261/0x400 mm/filemap.c:3776 ext4_buffered_write_iter+0x244/0x360 fs/ext4/file.c:268 ext4_file_write_iter+0x2e7/0x11f0 call_write_iter include/linux/fs.h:2074 [inline] new_sync_write fs/read_write.c:503 [inline] vfs_write+0x7f5/0x950 fs/read_write.c:590 ksys_write+0xd9/0x190 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __x64_sys_write+0x3e/0x50 fs/read_write.c:652 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: 0 PID: 11573 Comm: syz-executor.1 Not tainted 5.17.0-rc2-syzkaller-00060-g88808fbbead4 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================