================================================================== BUG: KCSAN: data-race in __futex_wait / hrtimer_wakeup read-write to 0xffffc90001547d90 of 8 bytes by interrupt on cpu 1: hrtimer_wakeup+0x1c/0x50 kernel/time/hrtimer.c:1921 __run_hrtimer kernel/time/hrtimer.c:1687 [inline] __hrtimer_run_queues+0x20d/0x5e0 kernel/time/hrtimer.c:1751 hrtimer_interrupt+0x210/0x7b0 kernel/time/hrtimer.c:1813 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x5c/0x1a0 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x6e/0x80 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 rep_nop arch/x86/include/asm/vdso/processor.h:13 [inline] cpu_relax arch/x86/include/asm/vdso/processor.h:18 [inline] mutex_spin_on_owner+0x7f/0x170 kernel/locking/mutex.c:383 mutex_optimistic_spin kernel/locking/mutex.c:476 [inline] __mutex_lock_common kernel/locking/mutex.c:699 [inline] __mutex_lock+0x449/0x8e0 kernel/locking/mutex.c:752 __mutex_lock_slowpath+0xa/0x10 kernel/locking/mutex.c:1040 mutex_lock+0x2d/0x40 kernel/locking/mutex.c:286 pipe_read+0x84/0x890 fs/pipe.c:264 do_iter_readv_writev+0x339/0x3e0 vfs_readv+0x1e5/0x660 fs/read_write.c:932 do_readv+0xf8/0x220 fs/read_write.c:994 __do_sys_readv fs/read_write.c:1085 [inline] __se_sys_readv fs/read_write.c:1082 [inline] __x64_sys_readv+0x45/0x50 fs/read_write.c:1082