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WARNING: CPU: 1 PID: 14 at kernel/rcu/tasks.h:901 trc_read_check_handler+0x248/0x2e0 kernel/rcu/tasks.h:920
Modules linked in:
CPU: 1 PID: 14 Comm: rcu_preempt Not tainted 5.14.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:trc_read_check_handler+0x248/0x2e0 kernel/rcu/tasks.h:901
Code: 48 c1 ea 03 0f b6 04 02 4c 89 e2 83 e2 07 38 d0 7f 0c 84 c0 74 08 4c 89 e7 e8 14 4d 5c 00 c6 83 21 04 00 00 01 e9 5a fe ff ff <0f> 0b 31 c9 ba 01 00 00 00 be 03 00 00 00 48 c7 c7 c0 ef 97 8b e8
RSP: 0018:ffffc90000dc0f78 EFLAGS: 00010047
RAX: 0000000000000001 RBX: ffff888011ef9c80 RCX: ffffffff81611370
RDX: fffffbfff204997c RSI: 0000000000000004 RDI: ffffffff9024cbe0
RBP: ffff888011ef9c80 R08: 0000000000000001 R09: 0000000000000003
R10: fffffbfff204997c R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880b9c32a48
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000014a53ad CR3: 0000000048774000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 flush_smp_call_function_queue+0x34b/0x640 kernel/smp.c:663
 __sysvec_call_function_single+0x95/0x3d0 arch/x86/kernel/smp.c:248
 sysvec_call_function_single+0x8e/0xc0 arch/x86/kernel/smp.c:243
 </IRQ>
 asm_sysvec_call_function_single+0x12/0x20 arch/x86/include/asm/idtentry.h:646
RIP: 0010:rcu_gp_init+0x0/0x12a0 kernel/rcu/tree.c:1745
Code: 89 ef e8 03 b2 5a 00 e9 de fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 e9 ab e8 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 <48> c7 c2 80 f1 60 8b 41 57 48 b8 00 00 00 00 00 fc ff df 41 56 48
RSP: 0018:ffffc90000d37e58 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffff888011ef9c80 RCX: 0000000000000002
RDX: 0000000000000008 RSI: 0000000000000001 RDI: 0000000000000001
RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817c49e8 R11: 0000000000000000 R12: ffffed10023df390
R13: ffffffff8b60f180 R14: ffffc90000d37e88 R15: ffff888011ef9c80
 rcu_gp_kthread+0xab/0x320 kernel/rcu/tree.c:2120
 kthread+0x3e5/0x4d0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
   0:	89 ef                	mov    %ebp,%edi
   2:	e8 03 b2 5a 00       	callq  0x5ab20a
   7:	e9 de fe ff ff       	jmpq   0xfffffeea
   c:	66 66 2e 0f 1f 84 00 	data16 nopw %cs:0x0(%rax,%rax,1)
  13:	00 00 00 00
  17:	0f 1f 00             	nopl   (%rax)
  1a:	e9 ab e8 ff ff       	jmpq   0xffffe8ca
  1f:	66 66 2e 0f 1f 84 00 	data16 nopw %cs:0x0(%rax,%rax,1)
  26:	00 00 00 00
* 2a:	48 c7 c2 80 f1 60 8b 	mov    $0xffffffff8b60f180,%rdx <-- trapping instruction
  31:	41 57                	push   %r15
  33:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  3a:	fc ff df
  3d:	41 56                	push   %r14
  3f:	48                   	rex.W