Warning: Permanently added '10.128.0.252' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 375.418893][ C0] hrtimer: interrupt took 34034 ns [ 485.533407][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 485.540062][ C0] rcu: 0-....: (11003 ticks this GP) idle=21b/1/0x4000000000000000 softirq=8763/8765 fqs=5250 [ 485.550823][ C0] (t=10502 jiffies g=11285 q=14) [ 485.555921][ C0] NMI backtrace for cpu 0 [ 485.560246][ C0] CPU: 0 PID: 6526 Comm: syz-executor734 Not tainted 5.15.0-syzkaller #0 [ 485.568738][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 485.578787][ C0] Call Trace: [ 485.582081][ C0] [ 485.584920][ C0] dump_stack_lvl+0xcd/0x134 [ 485.589608][ C0] nmi_cpu_backtrace.cold+0x47/0x144 [ 485.594928][ C0] ? lapic_can_unplug_cpu+0x80/0x80 [ 485.600204][ C0] nmi_trigger_cpumask_backtrace+0x1ae/0x220 [ 485.606199][ C0] rcu_dump_cpu_stacks+0x25e/0x3f0 [ 485.611344][ C0] rcu_sched_clock_irq.cold+0x9d/0x746 [ 485.616869][ C0] ? find_held_lock+0x2d/0x110 [ 485.621658][ C0] ? rcutree_dead_cpu+0x30/0x30 [ 485.626495][ C0] ? tick_sched_timer+0x2b/0x2d0 [ 485.631447][ C0] ? lock_downgrade+0x6e0/0x6e0 [ 485.636293][ C0] update_process_times+0x16d/0x200 [ 485.641509][ C0] tick_sched_handle+0x9b/0x180 [ 485.646346][ C0] tick_sched_timer+0x1b0/0x2d0 [ 485.651199][ C0] ? get_cpu_iowait_time_us+0x3f0/0x3f0 [ 485.656731][ C0] __hrtimer_run_queues+0x1c0/0xe50 [ 485.661919][ C0] ? hrtimer_sleeper_start_expires+0x80/0x80 [ 485.667890][ C0] ? ktime_get_update_offsets_now+0x3eb/0x5c0 [ 485.673945][ C0] hrtimer_interrupt+0x31c/0x790 [ 485.678874][ C0] __sysvec_apic_timer_interrupt+0x146/0x530 [ 485.684840][ C0] sysvec_apic_timer_interrupt+0x8e/0xc0 [ 485.690506][ C0] [ 485.693422][ C0] [ 485.696336][ C0] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 485.702335][ C0] RIP: 0010:htab_lru_map_update_elem+0x463/0x8c0 [ 485.708804][ C0] Code: 04 00 00 49 89 6d 08 e8 6b 8b ea ff 48 8b 74 24 28 48 b8 22 01 00 00 00 00 ad de 48 8b 7c 24 10 49 89 44 24 08 e8 2d f3 b0 07 <48> c7 c7 20 d4 93 89 e8 e1 23 ae 07 48 8b 54 24 18 48 b8 00 00 00 [ 485.728395][ C0] RSP: 0018:ffffc90000cd7a88 EFLAGS: 00000246 [ 485.734446][ C0] RAX: 0000000000000000 RBX: ffff88807efdc800 RCX: 0000000000000000 [ 485.742411][ C0] RDX: 0000000000000001 RSI: 0000000000000001 RDI: 0000000000000001 [ 485.750367][ C0] RBP: ffff8880218f2c00 R08: 0000000000000001 R09: 0000000000000001 [ 485.758331][ C0] R10: ffffffff817e0a58 R11: 0000000000000000 R12: ffff8880218f2c40 [ 485.766294][ C0] R13: 000000000000000b R14: 0000000000000005 R15: 0000000000000001 [ 485.774261][ C0] ? trace_hardirqs_on+0x38/0x1c0 [ 485.779347][ C0] ? htab_lru_map_update_elem+0x463/0x8c0 [ 485.785065][ C0] bpf_map_update_value.isra.0+0x2e8/0x910 [ 485.790893][ C0] generic_map_update_batch+0x3f2/0x5b0 [ 485.796436][ C0] ? generic_map_delete_batch+0x630/0x630 [ 485.802143][ C0] ? __sys_bpf+0x2b2/0x5f10 [ 485.806632][ C0] ? generic_map_delete_batch+0x630/0x630 [ 485.812338][ C0] bpf_map_do_batch+0x3d5/0x510 [ 485.817441][ C0] __sys_bpf+0x2761/0x5f10 [ 485.821851][ C0] ? bpf_link_get_from_fd+0x110/0x110 [ 485.827218][ C0] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 485.833196][ C0] ? find_held_lock+0x2d/0x110 [ 485.837952][ C0] ? find_held_lock+0x2d/0x110 [ 485.842714][ C0] ? trace_hardirqs_on+0x38/0x1c0 [ 485.847729][ C0] __x64_sys_bpf+0x75/0xb0 [ 485.852143][ C0] ? syscall_enter_from_user_mode+0x21/0x70 [ 485.858196][ C0] do_syscall_64+0x35/0xb0 [ 485.862673][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 485.868553][ C0] RIP: 0033:0x7fa79bb49f29 [ 485.872960][ C0] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 485.892810][ C0] RSP: 002b:00007ffdbbb21d88 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 485.901326][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa79bb49f29 [ 485.909288][ C0] RDX: 0000000000000038 RSI: 0000000020000480 RDI: 000000000000001a [ 485.917242][ C0] RBP: 0000000000000000 R08: 00007ffdbbb21f28 R09: 00007ffdbbb21f28 [ 485.925195][ C0] R10: 00007ffdbbb21f28 R11: 0000000000000246 R12: 00007fa79bb0d7b0 [ 485.933163][ C0] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 485.941144][ C0]