rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=da9c/1/0x4000000000000000 softirq=14849/14850 fqs=4641
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1041083          0            0
rcu: 	cputime:    23637      28842           87   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=6881 q=3689 ncpus=2)
CPU: 0 UID: 0 PID: 6036 Comm: syz.2.61 Not tainted 6.16.0-rc6-syzkaller-00434-gcd7c97f4584a #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:stack_trace_consume_entry+0x2c/0x280
Code: 1e fa 55 41 57 41 56 41 55 41 54 53 48 83 ec 18 48 ba 00 00 00 00 00 fc ff df 4c 8d 47 10 4c 89 c5 48 c1 ed 03 0f b6 44 15 00 <84> c0 0f 85 09 01 00 00 44 8b 4f 10 4c 8d 77 08 4d 89 f5 49 c1 ed
RSP: 0018:ffffc90000006db8 EFLAGS: 00000a02
RAX: 0000000000000000 RBX: ffffc90000006ec0 RCX: 4144852b03566200
RDX: dffffc0000000000 RSI: ffffffff8b6e5fd3 RDI: ffffc90000006ec0
RBP: 1ffff92000000dda R08: ffffc90000006ed0 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: ffffffff81acf520 R12: ffff8880213f3980
R13: ffff88811e6cc320 R14: ffffffff81acf520 R15: ffffc90000006e08
FS:  00007fb8675cf6c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000028838000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 arch_stack_walk+0x110/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_cache_noprof+0x230/0x3d0
 __set_page_owner+0x25c/0x4a0
 post_alloc_hook+0x240/0x2a0
 get_page_from_freelist+0x21e4/0x22c0
 __alloc_frozen_pages_noprof+0x181/0x370
 alloc_pages_mpol+0x232/0x4a0
 alloc_pages_noprof+0xa9/0x190
 stack_depot_save_flags+0x7a3/0x900
 kasan_save_track+0x4f/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_node_noprof+0x1bb/0x3c0
 kmalloc_reserve+0xbd/0x290
 __alloc_skb+0x142/0x2d0
 lapb_send_control+0x38/0x3e0
 lapb_t1timer_expiry+0x699/0xab0
 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:console_flush_all+0x7f7/0xc40
Code: 48 21 c3 0f 85 e9 01 00 00 e8 75 e7 1e 00 48 8b 5c 24 20 4d 85 f6 75 07 e8 66 e7 1e 00 eb 06 e8 5f e7 1e 00 fb 48 8b 44 24 28 <42> 80 3c 20 00 74 08 48 89 df e8 ea 0a 82 00 48 8b 1b 48 8b 44 24
RSP: 0018:ffffc90006436ce0 EFLAGS: 00000293
RAX: 1ffffffff1d36927 RBX: ffffffff8e9b4938 RCX: ffff8880213f3980
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90006436e30 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000200 R15: ffffffff8e9b48e0
 console_unlock+0xc4/0x270
 vprintk_emit+0x5b7/0x7a0
 _printk+0xcf/0x120
 __nla_validate_parse+0x1719/0x2d40
 __nla_validate+0x40/0x60
 rtm_to_fib_config+0x91/0x13c0
 inet_rtm_newroute+0xf3/0x210
 rtnetlink_rcv_msg+0x7cf/0xb70
 netlink_rcv_skb+0x208/0x470
 netlink_unicast+0x75c/0x8e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb86678e9a9
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:00007fb8675cf038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fb8669b6080 RCX: 00007fb86678e9a9
RDX: 000000000400a040 RSI: 0000200000000940 RDI: 0000000000000008
RBP: 00007fb866810d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fb8669b6080 R15: 00007fffcb520cc8
 </TASK>
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 6036 Comm: syz.2.61 Not tainted 6.16.0-rc6-syzkaller-00434-gcd7c97f4584a #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:lock_release+0x137/0x3e0
Code: 8d 1c ad 00 00 00 00 4c 01 eb 48 8d 6c dd 00 48 89 ef 4c 89 f6 e8 d9 4c d0 09 44 89 64 24 14 45 89 e5 85 c0 0f 84 dd 00 00 00 <48> 85 ed 0f 84 19 01 00 00 83 7d 24 00 0f 85 ea 01 00 00 8b 45 20
RSP: 0018:ffffc90000006d78 EFLAGS: 00000002
RAX: 0000000000000001 RBX: 000000000000001e RCX: 4144852b03566200
RDX: 0000000000000001 RSI: ffffffff99d2fbd0 RDI: ffff8880213f4560
RBP: ffff8880213f4560 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000000dac R12: 0000000000000006
R13: 0000000000000006 R14: ffffffff99d2fbd0 R15: ffff8880213f3980
FS:  00007fb8675cf6c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000028838000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 _raw_spin_unlock_irqrestore+0x70/0x110
 debug_object_activate+0x2e2/0x420
 enqueue_hrtimer+0x30/0x3a0
 __hrtimer_run_queues+0x656/0xc60
 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:stack_trace_save+0x0/0xe0
Code: 41 5d 41 5e 41 5f 5d e9 8e 6f c4 09 cc 90 0f 0b 90 45 31 ed eb e0 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 55 48 89 e5 41 56 53 48 83 e4 e0 48 81 ec 80 00 00 00
RSP: 0018:ffffc900000072c8 EFLAGS: 00000246
RAX: ffffc900000072d0 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000040 RDI: ffffc900000072d0
RBP: ffffc900000074f8 R08: dffffc0000000000 R09: 0000000000000000
R10: ffffc900000072d0 R11: fffffbfff1f43d1f R12: ffffea0000a38f00
R13: 0000000000000000 R14: ffff888028e3c008 R15: ffffc900000072d0
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x62/0x70
 kmem_cache_free+0x18f/0x400
 skb_release_data+0x62d/0x7c0
 kfree_skb_list_reason+0x25d/0x460
 __dev_queue_xmit+0x2148/0x3a70
 lapb_data_transmit+0x90/0xb0
 lapb_transmit_buffer+0x163/0x200
 lapb_t1timer_expiry+0x699/0xab0
 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:console_flush_all+0x7f7/0xc40
Code: 48 21 c3 0f 85 e9 01 00 00 e8 75 e7 1e 00 48 8b 5c 24 20 4d 85 f6 75 07 e8 66 e7 1e 00 eb 06 e8 5f e7 1e 00 fb 48 8b 44 24 28 <42> 80 3c 20 00 74 08 48 89 df e8 ea 0a 82 00 48 8b 1b 48 8b 44 24
RSP: 0018:ffffc90006436ce0 EFLAGS: 00000293
RAX: 1ffffffff1d36927 RBX: ffffffff8e9b4938 RCX: ffff8880213f3980
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90006436e30 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000200 R15: ffffffff8e9b48e0
 console_unlock+0xc4/0x270
 vprintk_emit+0x5b7/0x7a0
 _printk+0xcf/0x120
 __nla_validate_parse+0x1719/0x2d40
 __nla_validate+0x40/0x60
 rtm_to_fib_config+0x91/0x13c0
 inet_rtm_newroute+0xf3/0x210
 rtnetlink_rcv_msg+0x7cf/0xb70
 netlink_rcv_skb+0x208/0x470
 netlink_unicast+0x75c/0x8e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb86678e9a9
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:00007fb8675cf038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fb8669b6080 RCX: 00007fb86678e9a9
RDX: 000000000400a040 RSI: 0000200000000940 RDI: 0000000000000008
RBP: 00007fb866810d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fb8669b6080 R15: 00007fffcb520cc8
 </TASK>
watchdog: BUG: soft lockup - CPU#0 stuck for 267s! [syz.2.61:6036]
Modules linked in:
irq event stamp: 10786615
hardirqs last  enabled at (10786614): [<ffffffff8b6e9424>] irqentry_exit+0x74/0x90
hardirqs last disabled at (10786615): [<ffffffff8b6e7f6e>] sysvec_apic_timer_interrupt+0xe/0xc0
softirqs last  enabled at (35948): [<ffffffff8185bd4a>] __irq_exit_rcu+0xca/0x1f0
softirqs last disabled at (35951): [<ffffffff8185bd4a>] __irq_exit_rcu+0xca/0x1f0
CPU: 0 UID: 0 PID: 6036 Comm: syz.2.61 Not tainted 6.16.0-rc6-syzkaller-00434-gcd7c97f4584a #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:stack_trace_consume_entry+0x56/0x280
Code: 84 c0 0f 85 09 01 00 00 44 8b 4f 10 4c 8d 77 08 4d 89 f5 49 c1 ed 03 41 0f b6 44 15 00 84 c0 0f 85 22 01 00 00 45 3b 0e 73 3a <48> 8d 5f 0c 49 89 df 49 c1 ef 03 41 0f b6 04 17 84 c0 0f 85 47 01
RSP: 0018:ffffc900000075f8 EFLAGS: 00000287
RAX: 0000000000000000 RBX: ffffc90000007700 RCX: 4144852b03566200
RDX: dffffc0000000000 RSI: ffffffff81acf4cc RDI: ffffc90000007700
RBP: 1ffff92000000ee2 R08: ffffc90000007710 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffffff81acf520 R12: ffff8880213f3980
R13: 1ffff92000000ee1 R14: ffffc90000007708 R15: ffffc90000007648
FS:  00007fb8675cf6c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000028838000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 arch_stack_walk+0x110/0x150
 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
 lapb_send_control+0x38/0x3e0
 lapb_t1timer_expiry+0x699/0xab0
 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:console_flush_all+0x7f7/0xc40
Code: 48 21 c3 0f 85 e9 01 00 00 e8 75 e7 1e 00 48 8b 5c 24 20 4d 85 f6 75 07 e8 66 e7 1e 00 eb 06 e8 5f e7 1e 00 fb 48 8b 44 24 28 <42> 80 3c 20 00 74 08 48 89 df e8 ea 0a 82 00 48 8b 1b 48 8b 44 24
RSP: 0018:ffffc90006436ce0 EFLAGS: 00000293
RAX: 1ffffffff1d36927 RBX: ffffffff8e9b4938 RCX: ffff8880213f3980
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90006436e30 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000200 R15: ffffffff8e9b48e0
 console_unlock+0xc4/0x270
 vprintk_emit+0x5b7/0x7a0
 _printk+0xcf/0x120
 __nla_validate_parse+0x1719/0x2d40
 __nla_validate+0x40/0x60
 rtm_to_fib_config+0x91/0x13c0
 inet_rtm_newroute+0xf3/0x210
 rtnetlink_rcv_msg+0x7cf/0xb70
 netlink_rcv_skb+0x208/0x470
 netlink_unicast+0x75c/0x8e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb86678e9a9
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:00007fb8675cf038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fb8669b6080 RCX: 00007fb86678e9a9
RDX: 000000000400a040 RSI: 0000200000000940 RDI: 0000000000000008
RBP: 00007fb866810d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fb8669b6080 R15: 00007fffcb520cc8
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.16.0-rc6-syzkaller-00434-gcd7c97f4584a #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:pv_native_safe_halt+0x13/0x20
Code: d3 de 02 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d d3 ad 19 00 f3 0f 1e fa fb f4 <c3> cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90000177de0 EFLAGS: 00000282
RAX: 348ad74f1c1df700 RBX: ffffffff81975f18 RCX: 348ad74f1c1df700
RDX: 0000000000000001 RSI: ffffffff8d9986f9 RDI: ffffffff8be29f80
RBP: ffffc90000177f20 R08: ffff888136632f9b R09: 1ffff11026cc65f3
R10: dffffc0000000000 R11: ffffed1026cc65f4 R12: ffffffff8fa1e8f0
R13: 0000000000000001 R14: 0000000000000001 R15: 1ffff1102001e000
FS:  0000000000000000(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005602ca0f3df8 CR3: 000000000df38000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 default_idle+0x13/0x20
 default_idle_call+0x74/0xb0
 do_idle+0x1e8/0x510
 cpu_startup_entry+0x44/0x60
 start_secondary+0x101/0x110
 common_startup_64+0x13e/0x147
 </TASK>
