------------[ cut here ]------------ HSR: Could not send supervision frame WARNING: CPU: 0 PID: 0 at net/hsr/hsr_device.c:293 send_hsr_supervision_frame+0x66d/0x8d0 net/hsr/hsr_device.c:293 Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 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+0x66d/0x8d0 net/hsr/hsr_device.c:293 Code: 1d 39 2a 89 04 31 ff 89 de e8 3f 25 84 f8 84 db 75 b6 e8 56 21 84 f8 48 c7 c7 20 d1 d7 8a c6 05 19 2a 89 04 01 e8 7d d8 0c 00 <0f> 0b eb 9a e8 3a 21 84 f8 41 be 3c 00 00 00 ba 01 00 00 00 4c 89 RSP: 0018:ffffc90000007c60 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffffffff8b8bc6c0 RSI: ffffffff815f0c28 RDI: fffff52000000f7e RBP: ffff88802d8dac80 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff815ea9ce R11: 0000000000000000 R12: ffff8880908c8c80 R13: 0000000000000000 R14: ffff8880908c8c98 R15: 0000000000000017 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc678c1afd0 CR3: 000000000b88e000 CR4: 0000000000350ef0 Call Trace: hsr_announce+0x109/0x330 net/hsr/hsr_device.c:382 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers.part.0+0x675/0xa20 kernel/time/timer.c:1734 __run_timers kernel/time/timer.c:1715 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:636 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [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+0x1c6/0x250 drivers/acpi/processor_idle.c:553 Code: 89 de e8 dd e7 30 f8 84 db 75 ac e8 f4 e3 30 f8 e8 8f 27 37 f8 eb 0c e8 e8 e3 30 f8 0f 00 2d 41 56 ca 00 e8 dc e3 30 f8 fb f4 <9c> 5b 81 e3 00 02 00 00 fa 31 ff 48 89 de e8 57 e6 30 f8 48 85 db RSP: 0018:ffffffff8b807d60 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffffffff8b8bc6c0 RSI: ffffffff8946b584 RDI: 0000000000000000 RBP: ffff888144996064 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff817ddd38 R11: 0000000000000000 R12: 0000000000000001 R13: ffff888144996000 R14: ffff888144996064 R15: ffff8881467d2004 acpi_idle_enter+0x361/0x500 drivers/acpi/processor_idle.c:688 cpuidle_enter_state+0x1b1/0xc80 drivers/cpuidle/cpuidle.c:237 cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:351 call_cpuidle kernel/sched/idle.c:158 [inline] cpuidle_idle_call kernel/sched/idle.c:239 [inline] do_idle+0x3e8/0x590 kernel/sched/idle.c:306 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:403 start_kernel+0x47a/0x49b init/main.c:1135 secondary_startup_64_no_verify+0xb0/0xbb ---------------- Code disassembly (best guess): 0: 89 de mov %ebx,%esi 2: e8 dd e7 30 f8 callq 0xf830e7e4 7: 84 db test %bl,%bl 9: 75 ac jne 0xffffffb7 b: e8 f4 e3 30 f8 callq 0xf830e404 10: e8 8f 27 37 f8 callq 0xf83727a4 15: eb 0c jmp 0x23 17: e8 e8 e3 30 f8 callq 0xf830e404 1c: 0f 00 2d 41 56 ca 00 verw 0xca5641(%rip) # 0xca5664 23: e8 dc e3 30 f8 callq 0xf830e404 28: fb sti 29: f4 hlt * 2a: 9c pushfq <-- trapping instruction 2b: 5b pop %rbx 2c: 81 e3 00 02 00 00 and $0x200,%ebx 32: fa cli 33: 31 ff xor %edi,%edi 35: 48 89 de mov %rbx,%rsi 38: e8 57 e6 30 f8 callq 0xf830e694 3d: 48 85 db test %rbx,%rbx