------------[ cut here ]------------ HSR: Could not send supervision frame WARNING: CPU: 1 PID: 0 at net/hsr/hsr_device.c:299 send_hsr_supervision_frame+0x889/0xb40 net/hsr/hsr_device.c:299 Modules linked in: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.10.0-rc5-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:send_hsr_supervision_frame+0x889/0xb40 net/hsr/hsr_device.c:299 Code: 04 31 ff 89 de e8 77 77 cd f8 84 db 0f 85 8b fd ff ff e8 5a 7f cd f8 48 c7 c7 60 f7 6b 8a c6 05 d1 1e 36 04 01 e8 e3 fd 09 00 <0f> 0b e9 6c fd ff ff e8 3b 7f cd f8 41 be 42 00 00 00 ba 01 00 00 RSP: 0000:ffffc900004c8c70 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff888010862180 RSI: ffffffff8158d875 RDI: fffff52000099180 RBP: 00000000000088fb R08: 0000000000000001 R09: ffffffff8ecc4747 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801a517000 R13: 0000000000000000 R14: ffff888047bc2ce8 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88802cd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1911c4edb4 CR3: 0000000026ff5000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hsr_announce+0x122/0x320 net/hsr/hsr_device.c:404 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1410 expire_timers kernel/time/timer.c:1455 [inline] __run_timers.part.0+0x67c/0xa50 kernel/time/timer.c:1747 __run_timers kernel/time/timer.c:1728 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1760 __do_softirq+0x2a0/0x9f6 kernel/softirq.c:298 asm_call_irq_on_stack+0xf/0x20 __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:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x132/0x200 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:631 RIP: 0010:default_idle+0x13/0x20 arch/x86/kernel/process.c:689 Code: c9 f8 e9 48 ff ff ff e8 3b a9 fd ff cc cc cc cc cc cc cc cc cc cc cc e8 cb d2 8d f8 e9 07 00 00 00 0f 00 2d bf c3 5d 00 fb f4 66 90 66 2e 0f 1f 84 00 00 00 00 00 41 54 be 08 00 00 00 53 65 RSP: 0000:ffffc900003ffdf8 EFLAGS: 00000202 RAX: 00000000000d85fb RBX: ffff888010862180 RCX: 1ffffffff19d9099 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffed100210c430 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000001 R14: ffffffff8cecbe88 R15: 0000000000000000 default_idle_call+0x6a/0x90 kernel/sched/idle.c:98 cpuidle_idle_call kernel/sched/idle.c:168 [inline] do_idle+0x3fa/0x590 kernel/sched/idle.c:273 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:369 start_secondary+0x266/0x340 arch/x86/kernel/smpboot.c:266 secondary_startup_64_no_verify+0xb0/0xbb