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WARNING: CPU: 3 PID: 0 at kernel/rcu/tree_stall.h:770 rcu_check_gp_start_stall.part.0+0x1b2/0x2b0 kernel/rcu/tree_stall.h:762
Modules linked in:
CPU: 3 PID: 0 Comm: swapper/3 Not tainted 5.11.0-rc1-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
RIP: 0010:rcu_check_gp_start_stall.part.0+0x1b2/0x2b0 kernel/rcu/tree_stall.h:770
Code: d7 09 48 01 c3 48 39 da 78 5d be 04 00 00 00 48 c7 c7 a0 13 08 8f e8 3d e8 55 00 b8 01 00 00 00 87 05 f2 f4 a8 0d 85 c0 75 34 <0f> 0b 48 81 fd 40 b9 36 8b 74 0c 48 c7 c7 40 b9 36 8b e8 b7 63 8e
RSP: 0000:ffffc90000578e60 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000100000310 RCX: ffffffff815f1ea3
RDX: fffffbfff1e10274 RSI: 0000000000000004 RDI: ffffffff8f0813a0
RBP: ffffffff8b36b940 R08: 0000000000000001 R09: 0000000000000003
R10: fffffbfff1e10274 R11: 0000000000000001 R12: 1ffffffff1601e30
R13: 0000000000000246 R14: ffff88802cd35a92 R15: ffff88802cd35b18
FS:  0000000000000000(0000) GS:ffff88802cd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa8332af1fd CR3: 000000000b08e000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 rcu_check_gp_start_stall kernel/rcu/tree_stall.h:733 [inline]
 rcu_core+0x3b1/0xf00 kernel/rcu/tree.c:2718
 __do_softirq+0x2a5/0x9f7 kernel/softirq.c:343
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0xaa/0xd0 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:226 [inline]
 __irq_exit_rcu kernel/softirq.c:420 [inline]
 irq_exit_rcu+0x134/0x200 kernel/softirq.c:432
 sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1096
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:628
RIP: 0010:default_idle+0xe/0x10 arch/x86/kernel/process.c:689
Code: ff ff ff 4c 89 e7 e8 d1 8d c7 f8 eb 93 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 e9 07 00 00 00 0f 00 2d c4 6e 58 00 fb f4 <c3> cc 41 55 41 54 55 48 89 fd 53 e8 c2 fe 84 f8 e8 0d b7 fd ff 48
RSP: 0000:ffffc9000041fdf8 EFLAGS: 00000202
RAX: 00000000000b53c7 RBX: ffff888010898000 RCX: ffffffff88eb2510
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffed1002113000 R08: 0000000000000001 R09: ffff88802cd35bab
R10: ffffed10059a6b75 R11: 0000000000000000 R12: 0000000000000003
R13: 0000000000000003 R14: ffffffff8cef1048 R15: 0000000000000000
 default_idle_call+0x87/0xd0 kernel/sched/idle.c:112
 cpuidle_idle_call kernel/sched/idle.c:194 [inline]
 do_idle+0x3fa/0x590 kernel/sched/idle.c:299
 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:396
 start_secondary+0x274/0x350 arch/x86/kernel/smpboot.c:271
 secondary_startup_64_no_verify+0xb0/0xbb