================================================================== BUG: KCSAN: data-race in ext4_mark_iloc_dirty / find_inode_bit write to 0xffff888116abd214 of 4 bytes by task 795 on cpu 1: ext4_do_update_inode fs/ext4/inode.c:5084 [inline] ext4_mark_iloc_dirty+0x8a4/0x16e0 fs/ext4/inode.c:5725 __ext4_mark_inode_dirty+0x4cd/0x5d0 fs/ext4/inode.c:5919 ext4_ext_tree_init+0x7e/0x90 fs/ext4/extents.c:828 __ext4_new_inode+0x2a90/0x3060 fs/ext4/ialloc.c:1326 ext4_symlink+0x2bc/0x780 fs/ext4/namei.c:3336 vfs_symlink+0x216/0x2d0 fs/namei.c:3962 do_symlinkat+0xee/0x280 fs/namei.c:3989 __do_sys_symlink fs/namei.c:4008 [inline] __se_sys_symlink fs/namei.c:4006 [inline] __x64_sys_symlink+0x32/0x40 fs/namei.c:4006 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff888116abd214 of 4 bytes by task 793 on cpu 0: recently_deleted fs/ext4/ialloc.c:702 [inline] find_inode_bit+0x227/0x3a0 fs/ext4/ialloc.c:728 __ext4_new_inode+0xd22/0x3060 fs/ext4/ialloc.c:1062 ext4_symlink+0x2bc/0x780 fs/ext4/namei.c:3336 vfs_symlink+0x216/0x2d0 fs/namei.c:3962 do_symlinkat+0xee/0x280 fs/namei.c:3989 __do_sys_symlink fs/namei.c:4008 [inline] __se_sys_symlink fs/namei.c:4006 [inline] __x64_sys_symlink+0x32/0x40 fs/namei.c:4006 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: 793 Comm: syz-executor.1 Not tainted 5.11.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================