rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10499 ticks this GP) idle=08f4/1/0x4000000000000000 softirq=15699/15699 fqs=4607
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1023956          0            0
rcu: 	cputime:    24185      28304           86   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=8025 q=2035 ncpus=2)
CPU: 0 UID: 0 PID: 6327 Comm: syz.1.194 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:should_fail_ex+0x4/0x560
Code: 8d 8e 4c 89 f2 31 c9 e8 8a 81 cc ff e9 75 fe ff ff 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 <55> 41 57 41 56 41 55 41 54 53 48 83 ec 18 89 14 24 49 89 f6 48 89
RSP: 0018:ffffc90000007910 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: dffffc0000000000
RDX: 0000000000000001 RSI: 00000000000002c0 RDI: ffffffff8e260740
RBP: 00000000ffffffff R08: 00000000ffffffff R09: 0000000000000000
R10: ffff888112320f00 R11: fffffbfff1f43d1f R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff8881006c1ddc R15: ffff8881006c1dc0
FS:  00007fa23de456c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa23de23fc8 CR3: 000000003a578000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 should_failslab+0xa8/0x100
 kmem_cache_alloc_node_noprof+0x76/0x3c0
 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 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:ffffc90006fef700 EFLAGS: 00000286
RAX: 62b2bf4e745a5400 RBX: 0000000000000000 RCX: 62b2bf4e745a5400
RDX: 0000000000000006 RSI: ffffffff8d998701 RDI: 0000000000000001
RBP: ffffc90006fef7a0 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000dfdee0
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__kmalloc_node_noprof+0x2c2/0x4e0
Code: aa 87 10 48 3b 44 24 20 0f 85 41 01 00 00 48 89 d8 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d e9 44 fe 58 09 cc bf 01 00 00 00 <e8> 39 71 78 ff 49 8b 5d 00 e8 80 3c 56 09 41 89 c7 83 f8 08 0f 83
RSP: 0018:ffffc90006fef860 EFLAGS: 00000246
RAX: ffff8880b861f000 RBX: ffffea00007fee00 RCX: ffffffff92a1f590
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8215f69d
R10: ffff88810aedb800 R11: fffffbfff1f43d1f R12: 0000000000000000
R13: ffff88801a441a00 R14: 0000000002004dc0 R15: 0000000000014e60
 alloc_slab_obj_exts+0x39/0xa0
 __memcg_slab_post_alloc_hook+0x31e/0x7f0
 __kvmalloc_node_noprof+0x466/0x5f0
 alloc_netdev_mqs+0x8e5/0x11e0
 vti6_locate+0x5a6/0x750
 vti6_siocdevprivate+0x52c/0x700
 dev_ifsioc+0xb57/0xf00
 dev_ioctl+0x84c/0x1150
 sock_ioctl+0x719/0x790
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa23cf8e9a9
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:00007fa23de45038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa23d1b5fa0 RCX: 00007fa23cf8e9a9
RDX: 0000200000000080 RSI: 00000000000089f1 RDI: 0000000000000004
RBP: 00007fa23d010d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa23d1b5fa0 R15: 00007ffe58e8f928
 </TASK>
sched: DL replenish lagged too much
