================================================================== BUG: KCSAN: data-race in ext4_mark_iloc_dirty / find_inode_bit write to 0xffff88812996f814 of 4 bytes by task 5945 on cpu 1: ext4_do_update_inode fs/ext4/inode.c:5029 [inline] ext4_mark_iloc_dirty+0x888/0x1700 fs/ext4/inode.c:5683 ext4_xattr_set_handle+0xf77/0x1120 fs/ext4/xattr.c:2402 ext4_initxattrs+0x66/0xb0 fs/ext4/xattr_security.c:44 security_inode_init_security+0x1a9/0x260 security/security.c:1099 ext4_init_security+0x30/0x40 fs/ext4/xattr_security.c:58 __ext4_new_inode+0x2a0a/0x2fd0 fs/ext4/ialloc.c:1325 ext4_symlink+0x2cc/0x700 fs/ext4/namei.c:3293 vfs_symlink+0x23f/0x350 fs/namei.c:4250 do_symlinkat+0x104/0x380 fs/namei.c:4279 __do_sys_symlink fs/namei.c:4301 [inline] __se_sys_symlink fs/namei.c:4299 [inline] __x64_sys_symlink+0x52/0x60 fs/namei.c:4299 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff88812996f814 of 4 bytes by task 1112 on cpu 0: recently_deleted fs/ext4/ialloc.c:705 [inline] find_inode_bit+0x1ef/0x330 fs/ext4/ialloc.c:731 __ext4_new_inode+0xc9a/0x2fd0 fs/ext4/ialloc.c:1066 ext4_mkdir+0x28a/0x760 fs/ext4/namei.c:2929 vfs_mkdir+0x2c3/0x3e0 fs/namei.c:3885 do_mkdirat+0x12e/0x2c0 fs/namei.c:3911 __do_sys_mkdir fs/namei.c:3931 [inline] __se_sys_mkdir fs/namei.c:3929 [inline] __x64_sys_mkdir+0x40/0x50 fs/namei.c:3929 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x61617b47 -> 0x00000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 1112 Comm: syz-executor.0 Not tainted 5.15.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================