------------[ cut here ]------------ HSR: Could not send supervision frame WARNING: CPU: 0 PID: 29713 at net/hsr/hsr_device.c:311 send_hsr_supervision_frame+0x60a/0x810 net/hsr/hsr_device.c:311 Modules linked in: CPU: 0 PID: 29713 Comm: syz-executor.0 Not tainted 6.8.0-rc1-syzkaller-00049-g6098d87eaf31 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:send_hsr_supervision_frame+0x60a/0x810 net/hsr/hsr_device.c:311 Code: ff 89 de e8 78 76 1d f7 84 db 0f 85 bd fe ff ff e8 3b 7b 1d f7 c6 05 be 5c ba 04 01 90 48 c7 c7 e0 75 18 8c e8 27 70 e3 f6 90 <0f> 0b 90 90 e9 9a fe ff ff e8 18 7b 1d f7 41 be 3c 00 00 00 ba 01 RSP: 0000:ffffc90000007bd8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff814e18f9 RDX: ffff88804b9d2400 RSI: ffffffff814e1906 RDI: 0000000000000001 RBP: ffffc90000007c40 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000002 R12: ffff88805803bc00 R13: 0000000000000000 R14: ffffffff8a6a9dc0 R15: 0000000000000017 FS: 0000000000000000(0000) GS:ffff88802c600000(0063) knlGS:00000000f7f10b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000000041c8a0 CR3: 000000004f2bc000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hsr_announce+0x114/0x370 net/hsr/hsr_device.c:399 call_timer_fn+0x193/0x590 kernel/time/timer.c:1700 expire_timers kernel/time/timer.c:1751 [inline] __run_timers+0x759/0xaa0 kernel/time/timer.c:2038 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2051 __do_softirq+0x21a/0x8de kernel/softirq.c:553 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu kernel/softirq.c:632 [inline] irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1076 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x70 kernel/locking/spinlock.c:194 Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 f6 d5 d6 f6 48 89 df e8 ee 4d d7 f6 f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f 01 00 00 00 e8 e5 ed c8 f6 65 8b 05 a6 22 72 75 85 c0 74 12 5b RSP: 0000:ffffc9000753fc78 EFLAGS: 00000246 RAX: 0000000000000006 RBX: ffff88801bba8298 RCX: 1ffffffff1e75709 RDX: 0000000000000000 RSI: ffffffff8accae80 RDI: ffffffff8b2fd340 RBP: 0000000000000246 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff8f3aead7 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000246 R14: 0000000008000001 R15: ffff88801bba8000 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] __wake_up_common_lock kernel/sched/wait.c:108 [inline] __wake_up+0x3f/0x50 kernel/sched/wait.c:127 io_cqring_wake io_uring/io_uring.h:248 [inline] io_cqring_wake io_uring/io_uring.h:235 [inline] io_cq_unlock_post+0xed/0x190 io_uring/io_uring.c:669 __io_cqring_overflow_flush+0x3e2/0x570 io_uring/io_uring.c:719 io_cqring_do_overflow_flush io_uring/io_uring.c:727 [inline] io_cqring_wait io_uring/io_uring.c:2670 [inline] __do_sys_io_uring_enter+0x1e48/0x2450 io_uring/io_uring.c:3701 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x79/0x110 arch/x86/entry/common.c:321 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:346 entry_SYSENTER_compat_after_hwframe+0x70/0x7a RIP: 0023:0xf7f15579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f7f105ac EFLAGS: 00000292 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 RDX: 0000000000400000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: f5 cmc 1: 53 push %rbx 2: 48 8b 74 24 10 mov 0x10(%rsp),%rsi 7: 48 89 fb mov %rdi,%rbx a: 48 83 c7 18 add $0x18,%rdi e: e8 f6 d5 d6 f6 call 0xf6d6d609 13: 48 89 df mov %rbx,%rdi 16: e8 ee 4d d7 f6 call 0xf6d74e09 1b: f7 c5 00 02 00 00 test $0x200,%ebp 21: 75 1f jne 0x42 23: 9c pushf 24: 58 pop %rax 25: f6 c4 02 test $0x2,%ah 28: 75 2f jne 0x59 * 2a: bf 01 00 00 00 mov $0x1,%edi <-- trapping instruction 2f: e8 e5 ed c8 f6 call 0xf6c8ee19 34: 65 8b 05 a6 22 72 75 mov %gs:0x757222a6(%rip),%eax # 0x757222e1 3b: 85 c0 test %eax,%eax 3d: 74 12 je 0x51 3f: 5b pop %rbx