rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (10500 ticks this GP) idle=1cdc/1/0x4000000000000000 softirq=50213/60397 fqs=0
rcu: 	(t=10502 jiffies g=36653 q=388 ncpus=2)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g36653 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=14742
rcu: rcu_preempt kthread starved for 10502 jiffies! g36653 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
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:I stack:27224 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
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+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 11498 Comm: syz.2.2036 Not tainted 6.16.0-syzkaller-11895-gcca7a0aae895-dirty #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:advance_sched+0xff/0xc90
Code: db 74 29 49 8d 7c 24 c0 be ff ff ff ff e8 39 e5 de 01 89 c3 31 ff 89 c6 e8 2e fa 25 f8 85 db 0f 84 f5 06 00 00 e8 e1 f5 25 f8 <eb> 05 e8 da f5 25 f8 49 8d 5c 24 e8 48 89 d9 48 c1 e9 03 48 b8 00
RSP: 0018:ffffc90000007c70 EFLAGS: 00000006
RAX: ffffffff8999b5cf RBX: 0000000000000001 RCX: ffff88802225b980
RDX: 0000000000010000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000000f7c R12: ffff88803c2fa340
R13: ffff88803c2fa000 R14: dffffc0000000000 R15: ffff88802225c458
FS:  00007fc7837a16c0(0000) GS:ffff8880b8624000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f46adffbfc8 CR3: 0000000041878000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 __hrtimer_run_queues+0x52c/0xc60
 hrtimer_interrupt+0x45b/0xaa0
 __sysvec_apic_timer_interrupt+0x10b/0x410
 sysvec_apic_timer_interrupt+0xa1/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_acquire+0xa1/0x360
Code: 0f 84 f0 00 00 00 48 8b b4 24 90 00 00 00 4c 89 ef e8 d3 90 85 00 83 3d 1c 18 06 0e 00 0f 84 fa 00 00 00 65 8b 05 cf a4 02 11 <85> c0 0f 85 eb 00 00 00 65 48 8b 04 25 08 c0 9f 92 83 b8 ec 0a 00
RSP: 0018:ffffc9000457f1d0 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 86974effc337c700
RDX: 0000000000000000 RSI: ffffffff81cea217 RDI: 1ffffffff1c273dc
RBP: ffffffff81cea1f6 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc9000457f358 R11: ffffffff81ac3890 R12: 0000000000000002
R13: ffffffff8e139ee0 R14: 0000000000000000 R15: 0000000000000000
 is_bpf_text_address+0x47/0x2b0
 kernel_text_address+0xa5/0xe0
 __kernel_text_address+0xd/0x40
 unwind_get_return_address+0x4d/0x90
 arch_stack_walk+0xfc/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_noprof+0x1c1/0x3c0
 skb_clone+0x212/0x3a0
 bpf_clone_redirect+0xad/0x3d0
 bpf_prog_b36a1f39e2fdd4f4+0x5f/0x68
 bpf_test_run+0x318/0x7b0
 bpf_prog_test_run_skb+0xb30/0x1560
 bpf_prog_test_run+0x2c7/0x340
 __sys_bpf+0x581/0x870
 __x64_sys_bpf+0x7c/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc78298ebe9
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:00007fc7837a1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fc782bb5fa0 RCX: 00007fc78298ebe9
RDX: 0000000000000050 RSI: 0000200000002300 RDI: 000000000000000a
RBP: 00007fc782a11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc782bb6038 R14: 00007fc782bb5fa0 R15: 00007fffcd5736b8
 </TASK>
CPU: 1 UID: 0 PID: 11503 Comm: syz.6.2039 Not tainted 6.16.0-syzkaller-11895-gcca7a0aae895-dirty #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_many_cond+0xd31/0x12d0
Code: 00 00 45 8b 2c 24 44 89 ee 83 e6 01 31 ff e8 b6 62 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 61 5e 0b 00 eb 38 <f3> 90 42 0f b6 04 2b 84 c0 75 11 41 f7 04 24 01 00 00 00 74 1e e8
RSP: 0018:ffffc90004de7580 EFLAGS: 00000293
RAX: ffffffff81b44d6b RBX: 1ffff11009608341 RCX: ffff888119440000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90004de7700 R08: ffffffff8fa34237 R09: 1ffffffff1f46846
R10: dffffc0000000000 R11: fffffbfff1f46847 R12: ffff88804b041a08
R13: dffffc0000000000 R14: ffff88813663b1c0 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881a3c24000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000003200 CR3: 000000000df36000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 on_each_cpu_cond_mask+0x3f/0x80
 flush_tlb_mm_range+0x6b1/0x12d0
 tlb_flush_mmu+0x1a7/0x680
 tlb_finish_mmu+0xc3/0x1d0
 free_ldt_pgtables+0x17b/0x320
 exit_mmap+0x17c/0xb50
 __mmput+0x118/0x430
 exit_mm+0x1da/0x2c0
 do_exit+0x648/0x2300
 do_group_exit+0x21c/0x2d0
 __x64_sys_exit_group+0x3f/0x40
 x64_sys_call+0x21f7/0x2200
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f46ad18ebe9
Code: Unable to access opcode bytes at 0x7f46ad18ebbf.
RSP: 002b:00007fffb54d2be8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f46ad18ebe9
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fffb54d2c4c R08: 00000004b54d2cdf R09: 00000000000927c0
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000079
R13: 00000000000927c0 R14: 0000000000032df1 R15: 00007fffb54d2ca0
 </TASK>
