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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 5.15.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:trc_read_check_handler+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 94 4f 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 00 f3 97 8b e8
RSP: 0018:ffffc90000dc0f78 EFLAGS: 00010047
RAX: 0000000000000001 RBX: ffff888011ef9c80 RCX: ffffffff816103d0
RDX: fffffbfff2049384 RSI: 0000000000000004 RDI: ffffffff90249c20
RBP: ffff888011ef9c80 R08: 0000000000000001 R09: 0000000000000003
R10: fffffbfff2049384 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880b9c32ac8
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200004c0 CR3: 00000000135b5000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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_kthread+0x7f/0x320 kernel/rcu/tree.c:2113
Code: c7 40 08 f3 f3 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 44 24 78 31 c0 65 48 8b 1c 25 40 f0 01 00 49 89 dc 49 c1 ec 03 49 01 ec <be> 01 00 00 00 66 89 35 67 dc 35 0a 0f b7 05 5e dc 35 0a a8 01 0f
RSP: 0018:ffffc90000d37e60 EFLAGS: 00000286
RAX: 0000000000000000 RBX: ffff888011ef9c80 RCX: 0000000000000000
RDX: 0000000000000008 RSI: 1ffff920001a6fb9 RDI: 0000000000000001
RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817c3588 R11: 1ffff110173a6536 R12: ffffed10023df390
R13: ffffffff8b60f180 R14: ffffc90000d37e88 R15: ffff888011ef9c80
 kthread+0x3e5/0x4d0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
   0:	c7 40 08 f3 f3 f3 f3 	movl   $0xf3f3f3f3,0x8(%rax)
   7:	65 48 8b 04 25 28 00 	mov    %gs:0x28,%rax
   e:	00 00
  10:	48 89 44 24 78       	mov    %rax,0x78(%rsp)
  15:	31 c0                	xor    %eax,%eax
  17:	65 48 8b 1c 25 40 f0 	mov    %gs:0x1f040,%rbx
  1e:	01 00
  20:	49 89 dc             	mov    %rbx,%r12
  23:	49 c1 ec 03          	shr    $0x3,%r12
  27:	49 01 ec             	add    %rbp,%r12
* 2a:	be 01 00 00 00       	mov    $0x1,%esi <-- trapping instruction
  2f:	66 89 35 67 dc 35 0a 	mov    %si,0xa35dc67(%rip)        # 0xa35dc9d
  36:	0f b7 05 5e dc 35 0a 	movzwl 0xa35dc5e(%rip),%eax        # 0xa35dc9b
  3d:	a8 01                	test   $0x1,%al
  3f:	0f                   	.byte 0xf