rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (77 ticks this GP) idle=ab7c/1/0x4000000000000000 softirq=45832/45838 fqs=36
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P9158/1:b..l
rcu: 	(detected by 1, t=10503 jiffies, g=32369, q=468 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 9178 Comm: syz.4.631 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:kasan_check_range+0x1da/0x2c0
Code: 07 4d 85 e4 49 0f 49 dc 48 83 e3 f8 49 29 dc 74 12 41 80 3b 00 0f 85 b8 00 00 00 49 ff c3 49 ff cc 75 ee 5b 41 5c 41 5d 41 5e <41> 5f 5d c3 cc cc cc cc cc 45 84 ff 75 63 41 f7 c7 00 ff 00 00 75
RSP: 0018:ffffc900000070a8 EFLAGS: 00000056
RAX: 00000000ffffff01 RBX: ffff88804b227ac0 RCX: ffffffff819cb432
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff88804b227ac0
RBP: ffffc90000007170 R08: ffff88804b227ac3 R09: 1ffff11009644f58
R10: dffffc0000000000 R11: ffffed1009644f59 R12: ffff88804b227ad0
R13: ffff88804b227ac8 R14: 1ffff11009644f5a R15: 1ffff11009644f58
FS:  00007f73070186c0(0000) GS:ffff8880b8d73000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 0000000037a5e000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 do_raw_spin_lock+0x112/0x290
 _raw_spin_lock_irqsave+0xb3/0xf0
 hrtimer_try_to_cancel+0x22b/0x420
 hrtimer_cancel+0x3b/0x50
 cpu_clock_event_stop+0xd9/0x130
 __perf_event_overflow+0x580/0xe40
 perf_swevent_hrtimer+0x3b8/0x500
 __hrtimer_run_queues+0x4e0/0xc60
 hrtimer_interrupt+0x45b/0xaa0
 __sysvec_apic_timer_interrupt+0x10b/0x410
 sysvec_apic_timer_interrupt+0x52/0xc0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:get_random_u32+0x4e7/0x940
Code: e3 00 02 00 00 75 7e e8 27 a7 ae fc 48 8b 5c 24 28 4d 85 ff 75 07 e8 18 a7 ae fc eb 06 e8 11 a7 ae fc fb 8b 84 24 00 01 00 00 <48> c7 44 24 40 0e 36 e0 45 42 c7 04 23 00 00 00 00 4a c7 44 23 0c
RSP: 0018:ffffc900000079c0 EFLAGS: 00000246
RAX: 00000000afac5e43 RBX: 1ffff92000000f40 RCX: ffff8881072f0000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007b40 R08: ffffffff8f5cd537 R09: 1ffffffff1eb9aa6
R10: dffffc0000000000 R11: fffffbfff1eb9aa7 R12: dffffc0000000000
R13: 0000000000000002 R14: ffff88804b236270 R15: 0000000000000200
 __get_random_u32_below+0x14/0x90
 garp_join_timer+0xd5/0x120
 call_timer_fn+0x17e/0x5f0
 __run_timer_base+0x61a/0x860
 run_timer_softirq+0xb7/0x180
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_acquire+0x175/0x360
Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 eb bf ae 10 <48> 3b 44 24 58 0f 85 f2 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc900037ffc80 EFLAGS: 00000206
RAX: 1a1b7b070d4cff00 RBX: 0000000000000000 RCX: 1a1b7b070d4cff00
RDX: 0000000000000001 RSI: ffffffff8d71ebcb RDI: ffffffff8b9ec2e0
RBP: ffffffff8190796f R08: 0000000000000000 R09: ffffffff8190796f
R10: dffffc0000000000 R11: fffff520006fffb1 R12: 0000000000000002
R13: ffffffff8dd3a960 R14: 0000000000000000 R15: 0000000000000246
 task_mm_cid_work+0x32c/0x760
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xe9/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f730618ec29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7307018038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007f73063d5fa0 RCX: 00007f730618ec29
RDX: 0000000000000005 RSI: 0000000000002402 RDI: 0000000000000003
RBP: 00007f7306211e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f73063d6038 R14: 00007f73063d5fa0 R15: 00007ffed88140d8
 </TASK>
task:syz.3.627       state:R  running task     stack:26088 pid:9158  tgid:9157  ppid:8810   task_flags:0x400140 flags:0x00080003
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 preempt_schedule_common+0x83/0xd0
 preempt_schedule+0xae/0xc0
 preempt_schedule_thunk+0x16/0x30
 __local_bh_enable_ip+0x13e/0x1c0
 bpf_test_run+0x376/0x7b0
 bpf_prog_test_run_xdp+0x730/0x10e0
 bpf_prog_test_run+0x2c7/0x340
 __sys_bpf+0x562/0x860
 __x64_sys_bpf+0x7c/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f192e18ec29
RSP: 002b:00007f192f0fd038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f192e3d5fa0 RCX: 00007f192e18ec29
RDX: 000000000000004c RSI: 0000200000000240 RDI: 000000000000000a
RBP: 00007f192e211e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f192e3d6038 R14: 00007f192e3d5fa0 R15: 00007ffd809701a8
 </TASK>
rcu: rcu_preempt kthread starved for 10425 jiffies! g32369 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:26792 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_timeout+0x12b/0x270
 rcu_gp_fqs_loop+0x301/0x1540
 rcu_gp_kthread+0x99/0x390
 kthread+0x711/0x8a0
 ret_from_fork+0x439/0x7d0
 ret_from_fork_asm+0x1a/0x30
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 9177 Comm: syz.4.631 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:smp_call_function_single+0x3ae/0x590
Code: e6 01 31 ff e8 73 8a 0b 00 41 83 e6 01 75 11 e8 28 86 0b 00 4d 89 fe eb 3f e8 1e 86 0b 00 eb 3c 4d 89 fe f3 90 43 0f b6 04 2c <84> c0 75 0f f7 03 01 00 00 00 74 1d e8 01 86 0b 00 eb e6 89 d9 80
RSP: 0018:ffffc9000341fa40 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffffc9000341fa88 RCX: ffff88801ff53a00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000341fb30 R08: ffffffff8f5cd537 R09: 1ffffffff1eb9aa6
R10: dffffc0000000000 R11: ffffffff816fc210 R12: 1ffff92000683f51
R13: dffffc0000000000 R14: 1ffff92000683f4c R15: 1ffff92000683f4c
FS:  0000555562303500(0000) GS:ffff8881a4173000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2bcdf0 CR3: 0000000037a5e000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 event_function_call+0x326/0x970
 perf_event_release_kernel+0x15d/0x510
 perf_release+0x38/0x50
 __fput+0x44c/0xa70
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xe9/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f730618ec29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffed8814238 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f73063d7da0 RCX: 00007f730618ec29
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f73063d7da0 R08: 0000000000000118 R09: 0000000fd881452f
R10: 00007f73063d7cb0 R11: 0000000000000246 R12: 0000000000035fb7
R13: 00007f73063d6090 R14: ffffffffffffffff R15: 00007ffed8814350
 </TASK>
