kvm [10684]: vcpu0, guest rIP: 0x13c Hyper-V unhandled wrmsr: 0x40000024 data 0xb ================================================================== BUG: KCSAN: data-race in futex_wait_queue_me / task_dump_owner read-write to 0xffff888130d5102c of 4 bytes by task 10684 on cpu 0: freezer_count include/linux/freezer.h:121 [inline] freezable_schedule include/linux/freezer.h:173 [inline] futex_wait_queue_me+0x198/0x240 kernel/futex.c:2602 futex_wait+0x145/0x3d0 kernel/futex.c:2704 do_futex+0x105a/0x20c0 kernel/futex.c:3763 __do_sys_futex kernel/futex.c:3826 [inline] __se_sys_futex+0x2a8/0x390 kernel/futex.c:3792 __x64_sys_futex+0x74/0x80 kernel/futex.c:3792 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff888130d5102c of 4 bytes by task 10689 on cpu 1: task_dump_owner+0x2b/0x1b0 fs/proc/base.c:1823 pid_update_inode fs/proc/base.c:1965 [inline] pid_revalidate+0x69/0x110 fs/proc/base.c:1988 lookup_fast+0x208/0x370 fs/namei.c:768 walk_component+0x5c/0x350 fs/namei.c:1857 link_path_walk+0x471/0x730 fs/namei.c:2182 path_openat+0x19f/0x20a0 fs/namei.c:3367 do_filp_open+0xbd/0x1d0 fs/namei.c:3398 do_sys_openat2+0xa3/0x240 fs/open.c:1172 do_sys_open fs/open.c:1188 [inline] __do_sys_open fs/open.c:1196 [inline] __se_sys_open fs/open.c:1192 [inline] __x64_sys_open+0xe2/0x110 fs/open.c:1192 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: 1 PID: 10689 Comm: syz-executor.0 Not tainted 5.11.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================