syzbot

  node 1: slabs: 2206, objs: 26472, free: 5
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HSR: Could not send supervision frame
WARNING: CPU: 1 PID: 0 at net/hsr/hsr_device.c:293 send_hsr_supervision_frame+0x590/0x9f0 net/hsr/hsr_device.c:293
Modules linked in:
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.16.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:send_hsr_supervision_frame+0x590/0x9f0 net/hsr/hsr_device.c:293
Code: 7f f7 85 ed 74 2b e8 5f 9f 7f f7 e9 b1 fd ff ff e8 55 9f 7f f7 c6 05 78 74 e6 03 01 48 c7 c7 e0 f1 c7 8b 31 c0 e8 e0 78 49 f7 <0f> 0b e9 90 fd ff ff 48 83 c3 74 48 89 d8 48 c1 e8 03 42 8a 04 38
RSP: 0018:ffffc90000dc0a80 EFLAGS: 00010246
RAX: a5f0021073df5400 RBX: 1ffff920001b8117 RCX: ffff888012025700
RDX: 0000000080000101 RSI: 0000000080000101 RDI: 0000000000000000
RBP: 0000000000000003 R08: ffffffff8169fd72 R09: ffffed10173667b1
R10: ffffed10173667b1 R11: 0000000000000000 R12: ffffc90000dc0b40
R13: ffff888079e2ed60 R14: 1ffff1100f3c5dac R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f59fc692406 CR3: 000000000c88e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 hsr_announce+0x15b/0x2d0 net/hsr/hsr_device.c:382
 call_timer_fn+0xf6/0x210 kernel/time/timer.c:1421
 expire_timers kernel/time/timer.c:1466 [inline]
 __run_timers+0x71a/0x910 kernel/time/timer.c:1734
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1747
 __do_softirq+0x392/0x7a3 kernel/softirq.c:558
 __irq_exit_rcu+0xec/0x170 kernel/softirq.c:636
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:22 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:132 [inline]
RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:110 [inline]
RIP: 0010:acpi_idle_do_entry drivers/acpi/processor_idle.c:553 [inline]
RIP: 0010:acpi_idle_enter+0x42d/0x790 drivers/acpi/processor_idle.c:688
Code: fd 48 83 e3 08 44 8b 7c 24 04 0f 85 22 01 00 00 4c 8d 74 24 40 e8 23 53 0c fd eb 0c e8 ac b6 05 fd 0f 00 2d c5 f9 63 06 fb f4 <4c> 89 f3 48 c1 eb 03 42 80 3c 23 00 74 08 4c 89 f7 e8 0d 8a 51 fd
RSP: 0018:ffffc90000d57be0 EFLAGS: 00000282
RAX: a5f0021073df5400 RBX: 0000000000000000 RCX: ffffffff90bb2903
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000d57c90 R08: ffffffff818b1440 R09: ffffed1002404ae1
R10: ffffed1002404ae1 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff8881443ad064 R14: ffffc90000d57c20 R15: 0000000000000001
 cpuidle_enter_state+0x507/0xea0 drivers/cpuidle/cpuidle.c:237
 cpuidle_enter+0x59/0x90 drivers/cpuidle/cpuidle.c:351
 call_cpuidle kernel/sched/idle.c:158 [inline]
 cpuidle_idle_call kernel/sched/idle.c:239 [inline]
 do_idle+0x3e8/0x670 kernel/sched/idle.c:306
 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:403
 secondary_startup_64_no_verify+0xb1/0xbb
 </TASK>
----------------
Code disassembly (best guess):
   0:	fd                   	std
   1:	48 83 e3 08          	and    $0x8,%rbx
   5:	44 8b 7c 24 04       	mov    0x4(%rsp),%r15d
   a:	0f 85 22 01 00 00    	jne    0x132
  10:	4c 8d 74 24 40       	lea    0x40(%rsp),%r14
  15:	e8 23 53 0c fd       	callq  0xfd0c533d
  1a:	eb 0c                	jmp    0x28
  1c:	e8 ac b6 05 fd       	callq  0xfd05b6cd
  21:	0f 00 2d c5 f9 63 06 	verw   0x663f9c5(%rip)        # 0x663f9ed
  28:	fb                   	sti
  29:	f4                   	hlt
* 2a:	4c 89 f3             	mov    %r14,%rbx <-- trapping instruction
  2d:	48 c1 eb 03          	shr    $0x3,%rbx
  31:	42 80 3c 23 00       	cmpb   $0x0,(%rbx,%r12,1)
  36:	74 08                	je     0x40
  38:	4c 89 f7             	mov    %r14,%rdi
  3b:	e8 0d 8a 51 fd       	callq  0xfd518a4d