------------[ cut here ]------------ HSR: Could not send supervision frame WARNING: CPU: 2 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: 2 PID: 0 Comm: swapper/2 Not tainted 5.16.0-rc3-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:send_hsr_supervision_frame+0x66d/0x8d0 net/hsr/hsr_device.c:293 Code: 1d d3 06 89 04 31 ff 89 de e8 ef fa 83 f8 84 db 75 b6 e8 06 f7 83 f8 48 c7 c7 20 d2 d7 8a c6 05 b3 06 89 04 01 e8 cd dc 0c 00 <0f> 0b eb 9a e8 ea f6 83 f8 41 be 3c 00 00 00 ba 01 00 00 00 4c 89 RSP: 0000:ffffc90000560c60 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff8880114bba00 RSI: ffffffff815f0d88 RDI: fffff520000ac17e RBP: ffff88805037cc80 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff815eab2e R11: 0000000000000000 R12: ffff88801807fc80 R13: 0000000000000000 R14: ffff88801807fc98 R15: 0000000000000017 FS: 0000000000000000(0000) GS:ffff88802cc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb9050b91b0 CR3: 000000001fe0e000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> 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 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:default_idle+0xb/0x10 arch/x86/kernel/process.c:734 Code: ff ff e8 48 7c 77 f8 e9 24 fe ff ff e8 7e 2c fd ff cc cc cc cc cc cc cc cc cc cc cc cc cc cc eb 07 0f 00 2d d7 5c 5f 00 fb f4 <c3> 0f 1f 40 00 41 54 be 08 00 00 00 53 65 48 8b 1c 25 40 70 02 00 RSP: 0000:ffffc9000044fdf8 EFLAGS: 00000202 RAX: 00000000000f2a57 RBX: ffff8880114bba00 RCX: ffffffff8944145f RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000002 R08: 0000000000000001 R09: ffff88802cc3aa53 R10: ffffed100598754a R11: 0000000000000000 R12: ffffed1002297740 R13: 0000000000000002 R14: ffffffff8d912ad0 R15: 0000000000000000 default_idle_call+0x87/0xd0 kernel/sched/idle.c:112 cpuidle_idle_call kernel/sched/idle.c:194 [inline] do_idle+0x401/0x590 kernel/sched/idle.c:306 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:403 start_secondary+0x265/0x340 arch/x86/kernel/smpboot.c:272 secondary_startup_64_no_verify+0xb0/0xbb </TASK> ---------------- Code disassembly (best guess), 2 bytes skipped: 0: e8 48 7c 77 f8 callq 0xf8777c4d 5: e9 24 fe ff ff jmpq 0xfffffe2e a: e8 7e 2c fd ff callq 0xfffd2c8d f: cc int3 10: cc int3 11: cc int3 12: cc int3 13: cc int3 14: cc int3 15: cc int3 16: cc int3 17: cc int3 18: cc int3 19: cc int3 1a: cc int3 1b: cc int3 1c: cc int3 1d: eb 07 jmp 0x26 1f: 0f 00 2d d7 5c 5f 00 verw 0x5f5cd7(%rip) # 0x5f5cfd 26: fb sti 27: f4 hlt * 28: c3 retq <-- trapping instruction 29: 0f 1f 40 00 nopl 0x0(%rax) 2d: 41 54 push %r12 2f: be 08 00 00 00 mov $0x8,%esi 34: 53 push %rbx 35: 65 48 8b 1c 25 40 70 mov %gs:0x27040,%rbx 3c: 02 00