------------[ cut here ]------------ HSR: Could not send supervision frame WARNING: CPU: 0 PID: 17 at net/hsr/hsr_device.c:294 send_hsr_supervision_frame+0x608/0x810 net/hsr/hsr_device.c:294 Modules linked in: CPU: 0 PID: 17 Comm: ksoftirqd/0 Not tainted 6.5.0-rc1-syzkaller-00276-g20edcec23f92 #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+0x608/0x810 net/hsr/hsr_device.c:294 Code: 04 31 ff 89 de e8 58 ab 75 f7 84 db 0f 85 bd fe ff ff e8 1b b0 75 f7 48 c7 c7 c0 5e ad 8b c6 05 9e f5 84 04 01 e8 88 7b 3c f7 <0f> 0b e9 9e fe ff ff e8 fc af 75 f7 41 be 3c 00 00 00 ba 01 00 00 RSP: 0000:ffffc90000437a98 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000100 RDX: ffff888013eb2400 RSI: ffffffff814d3c06 RDI: 0000000000000001 RBP: ffffc90000437b00 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 000000003a525348 R12: ffff88807639bb80 R13: 0000000000000000 R14: ffffffff8a10c0e0 R15: 0000000000000017 FS: 0000000000000000(0000) GS:ffff88802c600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1902841ad5 CR3: 000000001909a000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hsr_announce+0x116/0x380 net/hsr/hsr_device.c:382 call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700 expire_timers kernel/time/timer.c:1751 [inline] __run_timers+0x764/0xb10 kernel/time/timer.c:2022 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035 __do_softirq+0x218/0x965 kernel/softirq.c:553 run_ksoftirqd kernel/softirq.c:921 [inline] run_ksoftirqd+0x31/0x60 kernel/softirq.c:913 smpboot_thread_fn+0x67d/0xa00 kernel/smpboot.c:164 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296 RIP: 0000:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000