rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10500 ticks this GP) idle=cee4/1/0x4000000000000000 softirq=27813/51524 fqs=5248
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   950523       7232            0
rcu: 	cputime:    24191      28190          184   ==> 52490(ms)
rcu: 	(t=10501 jiffies g=20685 q=2505 ncpus=2)
CPU: 0 UID: 0 PID: 8741 Comm: syz.4.1150 Not tainted 6.16.0-rc6-syzkaller-00434-gcd7c97f4584a-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:rcu_read_unlock_special+0x87/0x4c0
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 92 37 f8 10 41 f7 c6 00 00 f0 00 74 49 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc900000073a0 EFLAGS: 00000206
RAX: 2aa286b35fcd1100 RBX: 1ffff92000000e7c RCX: 2aa286b35fcd1100
RDX: 0000000000000002 RSI: ffffffff8d9987c6 RDI: ffffffff8be29f80
RBP: ffffc90000007498 R08: ffffffff8fa1eaf7 R09: 1ffffffff1f43d5e
R10: dffffc0000000000 R11: fffffbfff1f43d5f R12: ffffffff8e144400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
FS:  00007f2c539d26c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 000000002d044000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __rcu_read_unlock+0x84/0xe0
 unwind_next_frame+0x19ae/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_irq_work+0xa3/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+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 5b 22 21 f6 e8 96 f5 57 f6 fb bf 01 00 00 00 <e8> 1b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc90006ec7560 EFLAGS: 00000286
RAX: 2aa286b35fcd1100 RBX: 0000000000000000 RCX: 2aa286b35fcd1100
RDX: 0000000000000000 RSI: ffffffff8d9987c6 RDI: 0000000000000001
RBP: ffffc90006ec7600 R08: ffffffff8fa1eaf7 R09: 1ffffffff1f43d5e
R10: dffffc0000000000 R11: fffffbfff1f43d5f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000dd8eac
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:wake_up_var+0xae/0x120
Code: b8 ff ff ff ff 48 89 44 24 28 48 c7 44 24 30 00 00 00 00 4b 8d 1c a4 48 81 c3 c0 c1 e0 8d 48 89 d8 48 c1 e8 03 42 80 3c 30 00 <74> 08 48 89 df e8 c8 d2 87 00 48 8b 03 48 39 d8 74 21 4c 8d 44 24
RSP: 0018:ffffc90006ec76c0 EFLAGS: 00000246
RAX: 1ffffffff1bc204e RBX: ffffffff8de10270 RCX: 0000000000080000
RDX: ffffc900030e1000 RSI: 0000000000001e72 RDI: ffff88802a8aee18
RBP: ffffc90006ec7770 R08: ffff88810d1ae457 R09: 1ffff11021a35c8a
R10: dffffc0000000000 R11: ffffed1021a35c8b R12: 0000000000000cf0
R13: ffff88802a8aed48 R14: dffffc0000000000 R15: 1ffff92000dd8ed8
 evict+0x702/0x9c0
 __dentry_kill+0x209/0x660
 dput+0x19f/0x2b0
 terminate_walk+0x1b5/0x4b0
 path_openat+0x2e01/0x3830
 do_filp_open+0x34a/0x410
 do_sys_openat2+0x121/0x1c0
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2c52b8d4d0
Code: 48 89 44 24 20 75 93 44 89 54 24 0c e8 49 94 02 00 44 8b 54 24 0c 89 da 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 38 44 89 c7 89 44 24 0c e8 9c 94 02 00 8b 44
RSP: 002b:00007f2c539d1f10 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f2c52b8d4d0
RDX: 0000000000000002 RSI: 00007f2c539d1fa0 RDI: 00000000ffffff9c
RBP: 00007f2c539d1fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f2c52db5fa0 R15: 00007fffe67ae008
 </TASK>
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 37547162621 wd_nsec: 37547163342
