------------[ cut here ]------------ HSR: Could not send supervision frame WARNING: CPU: 0 PID: 3593 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: 3593 Comm: syz-fuzzer Not tainted 6.0.0-syzkaller-09589-g55be6084c8e0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 RIP: 0010:send_hsr_supervision_frame+0x66d/0x8d0 net/hsr/hsr_device.c:293 Code: 1d 90 9c 9a 04 31 ff 89 de e8 9f bf 4a f8 84 db 75 b6 e8 16 c3 4a f8 48 c7 c7 20 f0 21 8b c6 05 70 9c 9a 04 01 e8 12 a7 0d 00 <0f> 0b eb 9a e8 fa c2 4a 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: ffff88801cd93b00 RSI: ffffffff81612e28 RDI: fffff52000000f7e RBP: ffff8880445b8c80 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000100 R11: 000000003a525348 R12: ffff888020fe8f80 R13: 0000000000000000 R14: ffff888020fe8f98 R15: 0000000000000017 FS: 000000c000052090(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c001ab66b0 CR3: 000000002091d000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hsr_announce+0x10c/0x330 net/hsr/hsr_device.c:382 call_timer_fn+0x1a0/0x6b0 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers.part.0+0x674/0xa80 kernel/time/timer.c:1790 __run_timers kernel/time/timer.c:1768 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803 __do_softirq+0x1d0/0x9c8 kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1107 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:__syscall_enter_from_user_work kernel/entry/common.c:89 [inline] RIP: 0010:syscall_enter_from_user_mode+0x2c/0xb0 kernel/entry/common.c:110 Code: 49 89 f4 55 48 89 fd 53 48 8b 7c 24 18 e8 4c fa ff ff eb 28 eb 2c e8 13 fa fe f7 e8 ce f7 fe f7 fb 65 48 8b 04 25 80 6f 02 00 <48> 8b 70 08 40 f6 c6 3f 75 1a 5b 4c 89 e0 5d 41 5c c3 eb 1c 0f 0b RSP: 0018:ffffc90003baff20 EFLAGS: 00000246 RAX: ffff88801cd93b00 RBX: 0000000000000002 RCX: 1ffffffff1bc1f51 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8982c992 RBP: ffffc90003baff58 R08: 0000000000000000 R09: 0000000000000000 R10: fffffbfff1bc18da R11: 0000000000000001 R12: 0000000000000023 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 do_syscall_64+0x16/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x46703d Code: 8b 44 24 20 b9 40 42 0f 00 f7 f1 48 89 04 24 b8 e8 03 00 00 f7 e2 48 89 44 24 08 48 89 e7 be 00 00 00 00 b8 23 00 00 00 0f 05 <48> 8b 6c 24 10 48 83 c4 18 c3 cc cc cc cc cc cc cc cc cc cc cc cc RSP: 002b:000000c000061f10 EFLAGS: 00000202 ORIG_RAX: 0000000000000023 RAX: ffffffffffffffda RBX: 0000000000002710 RCX: 000000000046703d RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000c000061f10 RBP: 000000c000061f20 R08: 0000000000080d9f R09: 00007fff7a533080 R10: 0000000000000000 R11: 0000000000000202 R12: 000000c000061950 R13: 000000c016676000 R14: 000000c0000004e0 R15: 00007f1b6b42021a ---------------- Code disassembly (best guess): 0: 49 89 f4 mov %rsi,%r12 3: 55 push %rbp 4: 48 89 fd mov %rdi,%rbp 7: 53 push %rbx 8: 48 8b 7c 24 18 mov 0x18(%rsp),%rdi d: e8 4c fa ff ff callq 0xfffffa5e 12: eb 28 jmp 0x3c 14: eb 2c jmp 0x42 16: e8 13 fa fe f7 callq 0xf7fefa2e 1b: e8 ce f7 fe f7 callq 0xf7fef7ee 20: fb sti 21: 65 48 8b 04 25 80 6f mov %gs:0x26f80,%rax 28: 02 00 * 2a: 48 8b 70 08 mov 0x8(%rax),%rsi <-- trapping instruction 2e: 40 f6 c6 3f test $0x3f,%sil 32: 75 1a jne 0x4e 34: 5b pop %rbx 35: 4c 89 e0 mov %r12,%rax 38: 5d pop %rbp 39: 41 5c pop %r12 3b: c3 retq 3c: eb 1c jmp 0x5a 3e: 0f 0b ud2