rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=b054/1/0x4000000000000000 softirq=17687/17688 fqs=5249
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1042635          0            0
rcu: 	cputime:    33641      18848           88   ==> 52500(ms)
rcu: 	(t=10501 jiffies g=9761 q=2862 ncpus=2)
CPU: 1 UID: 0 PID: 6749 Comm: syz.3.242 Not tainted 6.16.0-syzkaller-11113-gf3af62b6cee8 #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:rcu_is_watching+0x4e/0xb0
Code: ff df 4c 8d 34 dd 10 8d bd 8d 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 6c 98 7c 00 48 c7 c3 98 8f a0 92 49 03 1e <48> 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 75 34 8b 03 65 ff 0d 29
RSP: 0018:ffffc900001e04b8 EFLAGS: 00000283
RAX: 1ffffffff1b7b1a3 RBX: ffff888136632f98 RCX: e65c4ac7f555ec00
RDX: 0000000000000000 RSI: ffffffff8be2fce0 RDI: ffffffff8be2fca0
RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff8172c025
R10: dffffc0000000000 R11: ffffffff81ac34b0 R12: 1ffff9200003c0b5
R13: ffffc900001e05e0 R14: ffffffff8dbd8d18 R15: dffffc0000000000
FS:  00007f6c7a7116c0(0000) GS:ffff8881a3c2a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558ad1e5c8 CR3: 000000002d37c000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_next_frame+0xd4/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_node_noprof+0x1bb/0x3c0
 kmalloc_reserve+0xbd/0x290
 __alloc_skb+0x142/0x2d0
 ndisc_alloc_skb+0x9f/0x480
 ndisc_send_rs+0x2b5/0x630
 addrconf_rs_timer+0x369/0x670
 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:preempt_schedule_irq+0xb0/0x150
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 4b 6e 17 f6 e8 46 b1 4e f6 fb bf 01 00 00 00 <e8> 5b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc90006516ca0 EFLAGS: 00000286
RAX: e65c4ac7f555ec00 RBX: 0000000000000000 RCX: e65c4ac7f555ec00
RDX: 0000000000000007 RSI: ffffffff8d9b1618 RDI: 0000000000000001
RBP: ffffc90006516d40 R08: ffffffff8fa32437 R09: 1ffffffff1f46486
R10: dffffc0000000000 R11: fffffbfff1f46487 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000ca2d94
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:local_clock+0x17/0x30
Code: 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 ff 05 65 a8 05 11 e8 20 a7 dd 09 65 ff 0d 59 a8 05 11 <74> 06 e9 42 8b e0 09 cc e8 4c 0f 9a ff c3 cc cc cc cc cc 66 0f 1f
RSP: 0018:ffffc90006516e00 EFLAGS: 00000287
RAX: 00000013e91e4b56 RBX: ffffea0000ba5c00 RCX: 00000014515deb30
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff92a5a040
RBP: 0000000000000003 R08: ffffea0000ba5c37 R09: 1ffffd4000174b86
R10: dffffc0000000000 R11: fffff94000174b87 R12: 0000000000000000
R13: 0000000000000000 R14: ffffea0000ba5c00 R15: 0000000000000000
 __reset_page_owner+0x1d/0x1f0
 __free_frozen_pages+0xbc4/0xd30
 __slab_free+0x303/0x3c0
 qlist_free_all+0x97/0x140
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 __kmalloc_cache_noprof+0x1be/0x3d0
 push_stack+0x80/0x390
 check_cond_jmp_op+0x1469/0x2910
 do_check+0x6751/0xe520
 do_check_common+0x1918/0x2470
 bpf_check+0x1746a/0x1d2e0
 bpf_prog_load+0x1318/0x1930
 __sys_bpf+0x528/0x870
 __x64_sys_bpf+0x7c/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6c7998ebe9
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:00007f6c7a711038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f6c79bb5fa0 RCX: 00007f6c7998ebe9
RDX: 0000000000000048 RSI: 00002000000054c0 RDI: 0000000000000005
RBP: 00007f6c79a11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6c79bb6038 R14: 00007f6c79bb5fa0 R15: 00007fff4f4b0b48
 </TASK>
