================================================================== BUG: KCSAN: data-race in key_task_permission / keyctl_chown_key write to 0xffff88814b4b6b68 of 4 bytes by task 17395 on cpu 0: keyctl_chown_key+0x53d/0x5b0 security/keys/keyctl.c:1040 __do_sys_keyctl security/keys/keyctl.c:1921 [inline] __se_sys_keyctl+0x112/0xbc0 security/keys/keyctl.c:1874 __x64_sys_keyctl+0x67/0x80 security/keys/keyctl.c:1874 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffff88814b4b6b68 of 4 bytes by task 17389 on cpu 1: key_task_permission+0x11f/0x2b0 security/keys/permission.c:54 lookup_user_key+0x9e7/0xde0 security/keys/process_keys.c:803 keyctl_setperm_key security/keys/keyctl.c:1082 [inline] __do_sys_keyctl security/keys/keyctl.c:1926 [inline] __se_sys_keyctl+0x83e/0xbc0 security/keys/keyctl.c:1874 __x64_sys_keyctl+0x67/0x80 security/keys/keyctl.c:1874 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x00000000 -> 0x0000ee01 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 17389 Comm: syz-executor.1 Not tainted 6.6.0-rc6-syzkaller-00182-gce55c22ec8b2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 ==================================================================