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WARNING: CPU: 1 PID: 14 at kernel/rcu/tasks.h:901 trc_read_check_handler+0x1c3/0x2f0
Modules linked in:
CPU: 1 PID: 14 Comm: rcu_preempt Not tainted 5.15.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:trc_read_check_handler+0x1c3/0x2f0 kernel/rcu/tasks.h:901
Code: 00 00 00 42 8a 04 23 84 c0 0f 84 dd fe ff ff 44 89 f9 80 e1 07 38 c1 0f 8c cf fe ff ff 4c 89 ff e8 02 47 61 00 e9 c2 fe ff ff <0f> 0b 48 c7 c7 00 d1 91 8c be 03 00 00 00 ba 01 00 00 00 31 c9 e8
RSP: 0018:ffffc90000dc0f68 EFLAGS: 00010047
RAX: 0000000000000001 RBX: 1ffff11002476413 RCX: ffffffff816c879e
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff909753a0
RBP: 0000000000000001 R08: dffffc0000000000 R09: 0000000000000003
R10: fffffbfff212ea75 R11: 0000000000000004 R12: dffffc0000000000
R13: ffff8880123b2098 R14: ffff8880123b1c80 R15: ffff8880123b1c80
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4ef45781b8 CR3: 0000000077822000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 flush_smp_call_function_queue+0x525/0x7a0 kernel/smp.c:663
 __sysvec_call_function_single+0x62/0x70 arch/x86/kernel/smp.c:248
 sysvec_call_function_single+0x8c/0xb0 arch/x86/kernel/smp.c:243
 </IRQ>
 asm_sysvec_call_function_single+0x12/0x20
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202
Code: 21 59 fd ff 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 1e 00 69 f7 48 89 df e8 26 b1 6a f7 e8 91 c4 8d f7 fb bf 01 00 00 00 <e8> 46 23 5e f7 65 8b 05 47 c2 06 76 85 c0 74 02 5b c3 e8 cc 29 05
RSP: 0018:ffffc90000d37d30 EFLAGS: 00000286
RAX: 833a46d13a0f6700 RBX: ffffffff8c9203c0 RCX: ffffffff81648381
RDX: dffffc0000000000 RSI: 0000000000000002 RDI: 0000000000000001
RBP: ffffc90000d37e10 R08: dffffc0000000000 R09: fffffbfff1fa31c4
R10: fffffbfff1fa31c4 R11: 0000000000000000 R12: 0000000000000003
R13: dffffc0000000000 R14: ffffffff8c9203c0 R15: ffffffff8c920428
 rcu_gp_init+0x248/0x1160
 rcu_gp_kthread+0x181/0x350 kernel/rcu/tree.c:2120
 kthread+0x453/0x480 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30
----------------
Code disassembly (best guess):
   0:	21 59 fd             	and    %ebx,-0x3(%rcx)
   3:	ff 90 53 48 89 fb    	callq  *-0x476b7ad(%rax)
   9:	48 83 c7 18          	add    $0x18,%rdi
   d:	48 8b 74 24 08       	mov    0x8(%rsp),%rsi
  12:	e8 1e 00 69 f7       	callq  0xf7690035
  17:	48 89 df             	mov    %rbx,%rdi
  1a:	e8 26 b1 6a f7       	callq  0xf76ab145
  1f:	e8 91 c4 8d f7       	callq  0xf78dc4b5
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
* 2a:	e8 46 23 5e f7       	callq  0xf75e2375 <-- trapping instruction
  2f:	65 8b 05 47 c2 06 76 	mov    %gs:0x7606c247(%rip),%eax        # 0x7606c27d
  36:	85 c0                	test   %eax,%eax
  38:	74 02                	je     0x3c
  3a:	5b                   	pop    %rbx
  3b:	c3                   	retq
  3c:	e8                   	.byte 0xe8
  3d:	cc                   	int3
  3e:	29                   	.byte 0x29
  3f:	05                   	.byte 0x5