hrtimer: interrupt took 25717 ns rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-....: (10500 ticks this GP) idle=c06/1/0x4000000000000002 softirq=9917/9917 fqs=5249 (t=10502 jiffies g=8557 q=5) NMI backtrace for cpu 1 CPU: 1 PID: 9091 Comm: syz-executor337 Not tainted 5.2.0-rc3+ #20 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1be/0x236 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_dump_cpu_stacks+0x183/0x1cf kernel/rcu/tree_stall.h:254 print_cpu_stall kernel/rcu/tree_stall.h:455 [inline] check_cpu_stall kernel/rcu/tree_stall.h:529 [inline] rcu_pending kernel/rcu/tree.c:2625 [inline] rcu_sched_clock_irq.cold+0x4d1/0xbfd kernel/rcu/tree.c:2161 update_process_times+0x32/0x80 kernel/time/timer.c:1639 tick_sched_handle+0xa2/0x190 kernel/time/tick-sched.c:167 tick_sched_timer+0x47/0x130 kernel/time/tick-sched.c:1298 __run_hrtimer kernel/time/hrtimer.c:1389 [inline] __hrtimer_run_queues+0x33b/0xdd0 kernel/time/hrtimer.c:1451 hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1509 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1041 [inline] smp_apic_timer_interrupt+0x111/0x550 arch/x86/kernel/apic/apic.c:1066 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:806 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:68 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x11/0x50 kernel/kcov.c:102 Code: 48 c7 05 9e 68 f5 08 00 00 00 00 e9 a4 e9 ff ff 90 90 90 90 90 90 90 90 90 55 48 89 e5 48 8b 75 08 65 48 8b 04 25 c0 fd 01 00 <65> 8b 15 c0 56 91 7e 81 e2 00 01 1f 00 75 2b 8b 90 e0 12 00 00 83 RSP: 0018:ffff888097e07420 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: ffff8880a4c44680 RBX: 0000000000035e40 RCX: ffffffff817be873 RDX: 0000000000000000 RSI: ffffffff83355230 RDI: 0000000000000001 RBP: ffff888097e07420 R08: ffff8880a4c44680 R09: ffff8880a4c44f48 R10: ffff8880a4c44f28 R11: ffff8880a4c44680 R12: 0000000000000000 R13: 0000000000000000 R14: ffff8880a4c44680 R15: ffff8880aa4007c0 check_preemption_disabled lib/smp_processor_id.c:14 [inline] debug_smp_processor_id+0x10/0x280 lib/smp_processor_id.c:57 rcu_dynticks_curr_cpu_in_eqs+0x17/0xb0 kernel/rcu/tree.c:290 rcu_is_watching+0x10/0x30 kernel/rcu/tree.c:872 rcu_read_lock include/linux/rcupdate.h:594 [inline] is_bpf_text_address+0x128/0x170 kernel/bpf/core.c:708 kernel_text_address+0x73/0xf0 kernel/extable.c:140 __kernel_text_address+0xd/0x40 kernel/extable.c:95 unwind_get_return_address arch/x86/kernel/unwind_frame.c:19 [inline] unwind_get_return_address+0x61/0xa0 arch/x86/kernel/unwind_frame.c:14 arch_stack_walk+0x97/0xf0 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0xac/0xe0 kernel/stacktrace.c:123 save_stack+0x23/0x90 mm/kasan/common.c:71 set_track mm/kasan/common.c:79 [inline] __kasan_kmalloc mm/kasan/common.c:489 [inline] __kasan_kmalloc.constprop.0+0xcf/0xe0 mm/kasan/common.c:462 kasan_slab_alloc+0xf/0x20 mm/kasan/common.c:497 slab_post_alloc_hook mm/slab.h:437 [inline] slab_alloc mm/slab.c:3326 [inline] __do_kmalloc mm/slab.c:3658 [inline] __kmalloc+0x145/0x740 mm/slab.c:3669 kmalloc_array include/linux/slab.h:670 [inline] kcalloc include/linux/slab.h:681 [inline] iter_file_splice_write+0x16e/0xbd0 fs/splice.c:690 do_splice_from fs/splice.c:848 [inline] direct_splice_actor+0x123/0x190 fs/splice.c:1020 splice_direct_to_actor+0x366/0x970 fs/splice.c:975 do_splice_direct+0x1da/0x2a0 fs/splice.c:1063 do_sendfile+0x597/0xd00 fs/read_write.c:1464 __do_sys_sendfile64 fs/read_write.c:1525 [inline] __se_sys_sendfile64 fs/read_write.c:1511 [inline] __x64_sys_sendfile64+0x1dd/0x220 fs/read_write.c:1511 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440339 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc9926a808 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440339 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000003 RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 R10: 00008000fffffffe R11: 0000000000000246 R12: 0000000000401bc0 R13: 0000000000401c50 R14: 0000000000000000 R15: 0000000000000000