clocksource: Long readout interval, skipping watchdog check: cs_nsec: 39741388428 wd_nsec: 39741389343
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (4728 ticks this GP) idle=0c9c/1/0x4000000000000000 softirq=137054/137056 fqs=3294
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   845236         13            0
rcu: 	cputime:    33636      13623           52   ==> 47270(ms)
rcu: 	(t=10502 jiffies g=100757 q=7366 ncpus=2)
CPU: 1 UID: 0 PID: 25524 Comm: syz.6.6690 Not tainted syzkaller #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_acquire+0x20b/0x2e0
Code: e9 30 ff ff ff e8 35 69 0c 0a f7 c3 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 b1 46 7a 11 48 3b 44 24 30 75 33 fb 48 83 c4 38 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 16 4f 0f 0a cc 48 8d 3d 3e 55 73
RSP: 0018:ffffc90000a084f8 EFLAGS: 00000282
RAX: 4a40ef6a8c626e00 RBX: 0000000000000246 RCX: 0000000000000101
RDX: 0000000009711080 RSI: ffffffff8e165502 RDI: ffffffff8c27b400
RBP: 0000000000000000 R08: ffffffff81767de5 R09: ffffffff8e75e3e0
R10: ffffc90000a08658 R11: ffffffff81b0bfa0 R12: 0000000000000002
R13: ffffffff8e75e3e0 R14: 0000000000000000 R15: 0000000000000000
FS:  00007ff8318106c0(0000) GS:ffff8882a9463000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001129b4000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_next_frame+0xc2/0x23c0
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_node_noprof+0x384/0x690
 __alloc_skb+0x27d/0x7d0
 __netdev_alloc_skb+0xc1/0x810
 hsr_init_skb+0xef/0x6e0
 send_hsr_supervision_frame+0x143/0xcb0
 hsr_announce+0x1db/0x370
 call_timer_fn+0x192/0x640
 __run_timer_base+0x652/0x8b0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x22a/0x870
 __irq_exit_rcu+0x5f/0x150
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_acquire+0x20c/0x2e0
Code: 30 ff ff ff e8 35 69 0c 0a f7 c3 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 b1 46 7a 11 48 3b 44 24 30 75 33 fb 48 83 c4 38 5b <41> 5c 41 5d 41 5e 41 5f 5d e9 16 4f 0f 0a cc 48 8d 3d 3e 55 73 0e
RSP: 0018:ffffc9000683fcd0 EFLAGS: 00000282
RAX: 4a40ef6a8c626e00 RBX: ffff8881bd58bd40 RCX: 0000000080000001
RDX: 000000009c9f4700 RSI: ffffffff8e165502 RDI: ffffffff8c27b400
RBP: 0000000000000000 R08: ffffffff82493206 R09: ffff8881bd58bd58
R10: ffff888167e249e0 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8881bd58bd58 R14: 0000000000000000 R15: 0000000000000001
 _raw_spin_lock+0x2e/0x40
 d_instantiate+0x66/0xc0
 alloc_file_pseudo+0x107/0x240
 sock_alloc_file+0xb8/0x2e0
 __sys_socketpair+0x2da/0x560
 __x64_sys_socketpair+0x9b/0xb0
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff83099c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff831810028 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007ff830c15fa0 RCX: 00007ff83099c799
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 000000000000001e
RBP: 00007ff830a32c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000140 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff830c16038 R14: 00007ff830c15fa0 R15: 00007ffc746a4398
 </TASK>
