bridge0: port 3(ip6gretap0) entered learning state
bridge0: port 3(ip6gretap0) entered forwarding state
bridge0: topology change detected, propagating
------------[ cut here ]------------
WARNING: CPU: 1 PID: 15103 at kernel/rcu/tree_stall.h:990 rcu_check_gp_start_stall+0x2cf/0x460 kernel/rcu/tree_stall.h:990
Modules linked in:
CPU: 1 PID: 15103 Comm: syz-executor.0 Not tainted 6.8.0-syzkaller-05236-g443574b03387 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:rcu_check_gp_start_stall+0x2cf/0x460 kernel/rcu/tree_stall.h:990
Code: c7 c0 14 50 94 be 04 00 00 00 e8 9c 33 7c 00 b8 01 00 00 00 87 05 c1 0d d4 12 85 c0 0f 85 1a ff ff ff 48 c7 c0 40 65 13 8e 90 <0f> 0b 90 49 39 c7 74 47 48 c7 c0 9c e1 86 8f 48 c1 e8 03 42 0f b6
RSP: 0018:ffffc90000a08bd8 EFLAGS: 00010046
RAX: ffffffff8e136540 RBX: 00000001000048ea RCX: ffffffff817c06f4
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff945014c0
RBP: ffffc90000a08e30 R08: 0000000000000003 R09: fffffbfff28a0298
R10: dffffc0000000000 R11: fffffbfff28a0298 R12: dffffc0000000000
R13: ffff8880b953f040 R14: 0000000000000246 R15: ffffffff8e136540
FS:  00007f5d603cd6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33521000 CR3: 000000007f4e4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rcu_core+0x694/0x1830 kernel/rcu/tree.c:2466
 __do_softirq+0x2bc/0x943 kernel/softirq.c:554
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf2/0x1c0 kernel/softirq.c:633
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:645
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:434 [inline]
RIP: 0010:__pv_queued_spin_lock_slowpath+0x5ff/0xc60 kernel/locking/qspinlock.c:511
Code: 01 00 00 49 89 dd c6 03 00 48 8b 44 24 10 0f b6 04 10 84 c0 0f 85 44 01 00 00 48 8b 04 24 c6 00 01 bb 00 80 ff ff eb 06 f3 90 <ff> c3 74 5d 41 0f b6 04 14 84 c0 75 36 41 80 3f 00 75 eb 4c 89 ff
RSP: 0018:ffffc90004647820 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 00000000ffffd839 RCX: 0000000000040000
RDX: dffffc0000000000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90004647918 R08: ffffffff92cc753f R09: 1ffffffff2598ea7
R10: dffffc0000000000 R11: fffffbfff2598ea8 R12: 1ffff11003a1a299
R13: ffff8880b953efd4 R14: 1ffff110172a0001 R15: ffff88801d0d14c8
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [inline]
 queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x272/0x370 kernel/locking/spinlock_debug.c:116
 spin_lock include/linux/spinlock.h:351 [inline]
 d_instantiate+0x64/0xa0 fs/dcache.c:1879
 alloc_path_pseudo fs/file_table.c:335 [inline]
 alloc_file_pseudo+0x19e/0x290 fs/file_table.c:347
 __anon_inode_getfile fs/anon_inodes.c:109 [inline]
 __anon_inode_getfd fs/anon_inodes.c:202 [inline]
 anon_inode_getfd+0xce/0x1e0 fs/anon_inodes.c:237
 bpf_prog_load+0x1917/0x20f0 kernel/bpf/syscall.c:2925
 __sys_bpf+0x4ee/0x810 kernel/bpf/syscall.c:5631
 __do_sys_bpf kernel/bpf/syscall.c:5738 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5736 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5736
 do_syscall_64+0xfb/0x240
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f5d5f67de69
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5d603cd0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f5d5f7abf80 RCX: 00007f5d5f67de69
RDX: 0000000000000048 RSI: 0000000020000080 RDI: 0000000000000005
RBP: 00007f5d5f6ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f5d5f7abf80 R15: 00007ffd6bcd5258
 </TASK>
----------------
Code disassembly (best guess):
   0:	01 00                	add    %eax,(%rax)
   2:	00 49 89             	add    %cl,-0x77(%rcx)
   5:	dd c6                	ffree  %st(6)
   7:	03 00                	add    (%rax),%eax
   9:	48 8b 44 24 10       	mov    0x10(%rsp),%rax
   e:	0f b6 04 10          	movzbl (%rax,%rdx,1),%eax
  12:	84 c0                	test   %al,%al
  14:	0f 85 44 01 00 00    	jne    0x15e
  1a:	48 8b 04 24          	mov    (%rsp),%rax
  1e:	c6 00 01             	movb   $0x1,(%rax)
  21:	bb 00 80 ff ff       	mov    $0xffff8000,%ebx
  26:	eb 06                	jmp    0x2e
  28:	f3 90                	pause
* 2a:	ff c3                	inc    %ebx <-- trapping instruction
  2c:	74 5d                	je     0x8b
  2e:	41 0f b6 04 14       	movzbl (%r12,%rdx,1),%eax
  33:	84 c0                	test   %al,%al
  35:	75 36                	jne    0x6d
  37:	41 80 3f 00          	cmpb   $0x0,(%r15)
  3b:	75 eb                	jne    0x28
  3d:	4c 89 ff             	mov    %r15,%rdi