------------[ cut here ]------------ HSR: Could not send supervision frame WARNING: CPU: 1 PID: 0 at net/hsr/hsr_device.c:294 send_hsr_supervision_frame+0x5fe/0x840 net/hsr/hsr_device.c:294 Modules linked in: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.4.0-rc2-syzkaller-00018-g4d6d4c7f541d #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:send_hsr_supervision_frame+0x5fe/0x840 net/hsr/hsr_device.c:294 Code: 04 31 ff 89 de e8 d2 d8 95 f7 84 db 0f 85 01 ff ff ff e8 e5 dc 95 f7 48 c7 c7 20 d6 89 8b c6 05 42 5d 76 04 01 e8 62 9c 5d f7 <0f> 0b e9 e2 fe ff ff e8 c6 dc 95 f7 41 be 3c 00 00 00 ba 01 00 00 RSP: 0000:ffffc90000530c70 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000100 RDX: ffff888013ae2400 RSI: ffffffff814c03e7 RDI: 0000000000000001 RBP: ffffc90000530cd0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88807179a880 R13: 0000000000000000 R14: 0000000000000017 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff88802c700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020136018 CR3: 0000000075705000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 000000000000f8ce DR2: 0000000000000000 DR3: 0000000000000004 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: hsr_announce+0x10d/0x370 net/hsr/hsr_device.c:382 call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700 expire_timers+0x29b/0x4b0 kernel/time/timer.c:1751 __run_timers kernel/time/timer.c:2022 [inline] __run_timers kernel/time/timer.c:1995 [inline] run_timer_softirq+0x326/0x910 kernel/time/timer.c:2035 __do_softirq+0x1d4/0x905 kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x114/0x190 kernel/softirq.c:650 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline] RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:72 [inline] RIP: 0010:default_idle+0xf/0x20 arch/x86/kernel/process.c:711 Code: 89 07 49 c7 c0 08 00 00 00 4d 29 c8 4c 01 c7 4c 29 c2 e9 76 ff ff ff cc cc cc cc f3 0f 1e fa 66 90 0f 00 2d d3 17 37 00 fb f4 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 f3 0f 1e fa 65 RSP: 0000:ffffc90000467e08 EFLAGS: 00000246 RAX: 00000000001f4039 RBX: 0000000000000001 RCX: ffffffff8a0f6655 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff88802c736ceb R10: ffffed10058e6d9d R11: 0000000000000000 R12: 0000000000000001 R13: ffffffff8e7a7590 R14: 0000000000000000 R15: 0000000000000000 default_idle_call+0x67/0xa0 kernel/sched/idle.c:97 cpuidle_idle_call kernel/sched/idle.c:170 [inline] do_idle+0x317/0x3c0 kernel/sched/idle.c:282 cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:379 start_secondary+0x221/0x2b0 arch/x86/kernel/smpboot.c:269 secondary_startup_64_no_verify+0xf4/0xfb ---------------- Code disassembly (best guess): 0: 89 07 mov %eax,(%rdi) 2: 49 c7 c0 08 00 00 00 mov $0x8,%r8 9: 4d 29 c8 sub %r9,%r8 c: 4c 01 c7 add %r8,%rdi f: 4c 29 c2 sub %r8,%rdx 12: e9 76 ff ff ff jmpq 0xffffff8d 17: cc int3 18: cc int3 19: cc int3 1a: cc int3 1b: f3 0f 1e fa endbr64 1f: 66 90 xchg %ax,%ax 21: 0f 00 2d d3 17 37 00 verw 0x3717d3(%rip) # 0x3717fb 28: fb sti 29: f4 hlt * 2a: fa cli <-- trapping instruction 2b: c3 retq 2c: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1) 33: 00 00 00 00 37: 0f 1f 40 00 nopl 0x0(%rax) 3b: f3 0f 1e fa endbr64 3f: 65 gs