------------[ cut here ]------------
WARNING: CPU: 1 PID: 6069 at kernel/rcu/tree_stall.h:1015 rcu_check_gp_start_stall+0x2e4/0x470 kernel/rcu/tree_stall.h:1015
Modules linked in:
CPU: 1 UID: 0 PID: 6069 Comm: syz.1.31 Not tainted 6.16.0-rc4-syzkaller-gbf4807c89d8f #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:rcu_check_gp_start_stall+0x2e4/0x470 kernel/rcu/tree_stall.h:1015
Code: ff ff 48 c7 c7 40 84 af 99 be 04 00 00 00 e8 d3 2c 7c 00 4c 89 f7 b8 01 00 00 00 87 05 35 cd 07 18 85 c0 0f 85 17 ff ff ff 90 <0f> 0b 90 48 81 ff c0 41 14 8e 74 47 48 c7 c0 30 08 a2 8f 48 c1 e8
RSP: 0018:ffffc90000a08bb8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000a02 RCX: ffffffff81a7b6fd
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8e1441c0
RBP: ffffc90000a08e30 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff335f088 R12: 0000000000002904
R13: 1ffff110170e75f2 R14: ffffffff8e1441c0 R15: dffffc0000000000
FS:  00007f2a5a4b96c0(0000) GS:ffff888125d1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000018c0 CR3: 00000000332d2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rcu_core+0x5f7/0x1710 kernel/rcu/tree.c:2827
 handle_softirqs+0x286/0x870 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__d_instantiate+0x197/0x740 fs/dcache.c:1915
Code: 01 31 ff e8 cb 76 85 ff 81 e5 00 00 00 01 0f 85 c0 02 00 00 e8 7a 72 85 ff 48 8d bb b8 00 00 00 48 89 7c 24 10 e8 99 c5 36 09 <43> 0f b6 04 37 84 c0 0f 85 e6 03 00 00 bd 00 04 04 00 23 2b bf 00
RSP: 0018:ffffc9000b9a7b70 EFLAGS: 00010246
RAX: f31dbed15aa08d00 RBX: ffff88805b6f3a70 RCX: dffffc0000000000
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc9000b9a7ae0
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52001734f5c R12: ffff888148c42840
R13: 0000000000200000 R14: dffffc0000000000 R15: 1ffff1100b6de74e
 d_instantiate+0x6f/0xa0 fs/dcache.c:1947
 alloc_path_pseudo fs/file_table.c:364 [inline]
 alloc_file_pseudo+0xf6/0x210 fs/file_table.c:376
 __anon_inode_getfile fs/anon_inodes.c:153 [inline]
 anon_inode_getfile+0xc5/0x1a0 fs/anon_inodes.c:191
 __do_sys_perf_event_open kernel/events/core.c:13631 [inline]
 __se_sys_perf_event_open+0xf20/0x1d70 kernel/events/core.c:13333
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2a5958e929
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:00007f2a5a4b9038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f2a597b5fa0 RCX: 00007f2a5958e929
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000100
RBP: 00007f2a59610b39 R08: 0000000000000009 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f2a597b5fa0 R15: 00007ffeb4d2a808
 </TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	31 ff                	xor    %edi,%edi
   2:	e8 cb 76 85 ff       	call   0xff8576d2
   7:	81 e5 00 00 00 01    	and    $0x1000000,%ebp
   d:	0f 85 c0 02 00 00    	jne    0x2d3
  13:	e8 7a 72 85 ff       	call   0xff857292
  18:	48 8d bb b8 00 00 00 	lea    0xb8(%rbx),%rdi
  1f:	48 89 7c 24 10       	mov    %rdi,0x10(%rsp)
  24:	e8 99 c5 36 09       	call   0x936c5c2
* 29:	43 0f b6 04 37       	movzbl (%r15,%r14,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 e6 03 00 00    	jne    0x41c
  36:	bd 00 04 04 00       	mov    $0x40400,%ebp
  3b:	23 2b                	and    (%rbx),%ebp
  3d:	bf                   	.byte 0xbf