rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10362 ticks this GP) idle=da24/1/0x4000000000000000 softirq=15764/27940 fqs=4424
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1018448          0            0
rcu: 	cputime:    25562      26917           88   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=6561 q=4251 ncpus=2)
CPU: 0 UID: 0 PID: 6147 Comm: syz.1.120 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:garp_pdu_queue+0x42/0x6e0
Code: fc ff df e8 d0 c7 49 f8 49 8d 9c 24 f8 00 00 00 49 89 dd 49 c1 ed 03 43 80 7c 35 00 00 74 08 48 89 df e8 51 eb ac f8 4c 8b 3b <4d> 85 ff 74 48 4c 89 64 24 10 4d 8d 67 74 4c 89 e0 48 c1 e8 03 42
RSP: 0018:ffffc90000007b20 EFLAGS: 00000246
RAX: ffffffff897655f0 RBX: ffff8880306110f8 RCX: ffff88801f5f3980
RDX: 0000000000000100 RSI: 0000000000000004 RDI: ffff888030611000
RBP: ffffc90000007c90 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000000f5c R12: ffff888030611000
R13: 1ffff110060c221f R14: dffffc0000000000 R15: 0000000000000000
FS:  00007f6845be46c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000118c2000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 garp_join_timer+0x77/0x120
 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:ffffc90004e3fa20 EFLAGS: 00000282
RAX: 0943070b536ca500 RBX: 0000000000000000 RCX: 0943070b536ca500
RDX: 0000000000000000 RSI: ffffffff8d998701 RDI: 0000000000000001
RBP: ffffc90004e3fad0 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920009c7f44
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:do_user_addr_fault+0x1ae/0x1390
Code: 1b 48 89 de 48 81 e6 00 02 00 00 31 ff e8 5a 72 4c 00 48 81 e3 00 02 00 00 0f 84 79 0e 00 00 e8 88 f9 53 00 fb 4c 89 7c 24 38 <0f> 1f 44 00 00 e8 58 6d 4c 00 44 89 f6 83 e6 40 31 ff 48 89 74 24
RSP: 0018:ffffc90004e3fb98 EFLAGS: 00000282
RAX: 0943070b536ca500 RBX: 0000000000000200 RCX: 0943070b536ca500
RDX: 0000000000000000 RSI: ffffffff8d998701 RDI: ffffffff8be29f80
RBP: dffffc0000000000 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffffc90004e3fc88
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88801f5f3980
 exc_page_fault+0x76/0xf0
 asm_exc_page_fault+0x26/0x30
RIP: 0010:strncpy_from_user+0x1bc/0x290
Code: c1 e8 03 49 01 c4 e9 8d 00 00 00 e8 0e eb c9 fc 48 f7 dd 49 89 ec 48 8b 1c 24 31 ff 4c 89 ee e8 da ef c9 fc 49 83 ed 01 72 44 <43> 8a 2c 27 4a 8d 3c 23 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00
RSP: 0018:ffffc90004e3fd30 EFLAGS: 00010212
RAX: ffffffff84f632c6 RBX: ffff888031e3c420 RCX: ffff88801f5f3980
RDX: 0000000000000002 RSI: 0000000000000fe0 RDI: 0000000000000000
RBP: fffffffffffffff8 R08: ffff888031e3d3ff R09: 1ffff110063c7a7f
R10: dffffc0000000000 R11: ffffed10063c7a80 R12: 0000000000000000
R13: 0000000000000fdf R14: 0000000000000fe0 R15: 0000000000000000
 getname_flags+0xf3/0x540
 do_sys_openat2+0xbc/0x1c0
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6844d8eb69
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:00007f6845be4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f6844fb5fa0 RCX: 00007f6844d8eb69
RDX: 00000000000026e1 RSI: 0000000000000000 RDI: ffffffffffffff9c
RBP: 00007f6844e11df1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f6844fb5fa0 R15: 00007fff1a684698
 </TASK>
