rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (10499 ticks this GP) idle=65e/1/0x4000000000000002 softirq=13281/13281 fqs=1 
	(t=10501 jiffies g=6833 q=69)
rcu: rcu_preempt kthread starved for 10500 jiffies! g6833 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: RCU grace-period kthread stack dump:
rcu_preempt     R  running task    29032    10      2 0x80004000
Call Trace:
 context_switch kernel/sched/core.c:3385 [inline]
 __schedule+0x9a0/0xcc0 kernel/sched/core.c:4081
 schedule+0x181/0x210 kernel/sched/core.c:4155
 schedule_timeout+0x14f/0x240 kernel/time/timer.c:1895
 rcu_gp_fqs_loop kernel/rcu/tree.c:1661 [inline]
 rcu_gp_kthread+0xed8/0x1770 kernel/rcu/tree.c:1821
 kthread+0x332/0x350 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
NMI backtrace for cpu 0
CPU: 0 PID: 8643 Comm: syz-executor.0 Not tainted 5.5.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fb/0x318 lib/dump_stack.c:118
 nmi_cpu_backtrace+0xaf/0x1a0 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x174/0x290 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x10/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x15a/0x220 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:2827 [inline]
 rcu_sched_clock_irq+0xe25/0x1ad0 kernel/rcu/tree.c:2271
 update_process_times+0x12d/0x180 kernel/time/timer.c:1726
 tick_sched_handle kernel/time/tick-sched.c:167 [inline]
 tick_sched_timer+0x263/0x420 kernel/time/tick-sched.c:1310
 __run_hrtimer kernel/time/hrtimer.c:1517 [inline]
 __hrtimer_run_queues+0x403/0x840 kernel/time/hrtimer.c:1579
 hrtimer_interrupt+0x38c/0xda0 kernel/time/hrtimer.c:1641
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline]
 smp_apic_timer_interrupt+0x109/0x280 arch/x86/kernel/apic/apic.c:1135
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:__sanitizer_cov_trace_pc+0x31/0x50 kernel/kcov.c:192
Code: 0c 25 c0 1d 02 00 65 8b 15 38 5f 8b 7e f7 c2 00 01 1f 00 75 2c 8b 91 80 13 00 00 83 fa 02 75 21 48 8b 91 88 13 00 00 48 8b 32 <48> 8d 7e 01 8b 89 84 13 00 00 48 39 cf 73 08 48 89 44 f2 08 48 89
RSP: 0018:ffffc90001fa75e0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: ffffffff814897d3 RBX: 0000000000000000 RCX: ffff88808c610040
RDX: ffffc90001fb9000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90001fa7608 R08: 000000000003a728 R09: ffffed10127212f1
R10: ffffed10127212f1 R11: 0000000000000000 R12: dffffc0000000000
R13: dffffc0000000000 R14: 00000000fffffffc R15: ffff888093909778
 free_thread_stack+0x168/0x590 kernel/fork.c:280
 release_task_stack kernel/fork.c:440 [inline]
 put_task_stack+0xa3/0x130 kernel/fork.c:451
 finish_task_switch+0x3f1/0x550 kernel/sched/core.c:3256
 context_switch kernel/sched/core.c:3388 [inline]
 __schedule+0x9a8/0xcc0 kernel/sched/core.c:4081
 preempt_schedule_irq+0xc1/0x140 kernel/sched/core.c:4338
 retint_kernel+0x1b/0x2b
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:752 [inline]
RIP: 0010:lock_is_held_type+0x25c/0x2b0 kernel/locking/lockdep.c:4524
Code: 68 95 2a 89 48 c1 e8 03 42 80 3c 30 00 74 0c 48 c7 c7 68 95 2a 89 e8 33 50 57 00 48 83 3d c3 be ce 07 00 74 56 4c 89 e7 57 9d <0f> 1f 44 00 00 89 d8 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3
RSP: 0018:ffffc90001fa7868 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff12552ad RBX: 0000000000000000 RCX: 0000000000040000
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000286
RBP: ffffc90001fa78b8 R08: ffffffff839f53f7 R09: ffffed1015d66fc5
R10: ffffed1015d66fc5 R11: 0000000000000000 R12: 0000000000000286
R13: ffff88808c6108d4 R14: dffffc0000000000 R15: 1ffff110118c211a
 lock_is_held include/linux/lockdep.h:361 [inline]
 ___might_sleep+0x84/0x5e0 kernel/sched/core.c:6765
 __vmalloc_area_node mm/vmalloc.c:2494 [inline]
 __vmalloc_node_range+0x4e8/0x850 mm/vmalloc.c:2546
 __vmalloc_node mm/vmalloc.c:2601 [inline]
 __vmalloc_node_flags mm/vmalloc.c:2615 [inline]
 vzalloc+0x73/0x80 mm/vmalloc.c:2660
 bpf_check+0x11a/0xfc90 kernel/bpf/verifier.c:9685
 bpf_prog_load kernel/bpf/syscall.c:1805 [inline]
 __do_sys_bpf+0x9ab7/0xc9f0 kernel/bpf/syscall.c:3030
 __se_sys_bpf kernel/bpf/syscall.c:2989 [inline]
 __x64_sys_bpf+0x7a/0x90 kernel/bpf/syscall.c:2989
 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45af49
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f247e437c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045af49
RDX: 0000000000000048 RSI: 00000000200054c0 RDI: 0000000000000005
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f247e4386d4
R13: 00000000004c1697 R14: 00000000004d64c0 R15: 00000000ffffffff