node 1: slabs: 956, objs: 11472, free: 31 ------------[ cut here ]------------ HSR: Could not send supervision frame WARNING: CPU: 0 PID: 13 at net/hsr/hsr_device.c:293 send_hsr_supervision_frame+0x590/0x9f0 net/hsr/hsr_device.c:293 Modules linked in: CPU: 0 PID: 13 Comm: ksoftirqd/0 Not tainted 5.16.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:send_hsr_supervision_frame+0x590/0x9f0 net/hsr/hsr_device.c:293 Code: 69 f7 85 ed 74 2b e8 bf bb 69 f7 e9 b1 fd ff ff e8 b5 bb 69 f7 c6 05 9f 96 f0 03 01 48 c7 c7 a0 eb e7 8b 31 c0 e8 30 97 33 f7 <0f> 0b e9 90 fd ff ff 48 83 c3 74 48 89 d8 48 c1 e8 03 42 8a 04 38 RSP: 0000:ffffc90000d27900 EFLAGS: 00010246 RAX: c5d75aadeb1fe900 RBX: 1ffff920001a4f17 RCX: ffff888012460000 RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000 RBP: 0000000000000003 R08: ffffffff8169fb82 R09: fffffbfff2034df9 R10: fffffbfff2034df9 R11: 0000000000000000 R12: ffffc90000d279c0 R13: ffff88806e0d2d60 R14: 1ffff1100dc1a5ac R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f312722cba0 CR3: 00000000726cd000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hsr_announce+0x15b/0x2d0 net/hsr/hsr_device.c:382 call_timer_fn+0xf6/0x210 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers+0x71a/0x910 kernel/time/timer.c:1734 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1747 __do_softirq+0x392/0x7a3 kernel/softirq.c:558 run_ksoftirqd+0xc1/0x120 kernel/softirq.c:920 smpboot_thread_fn+0x533/0x9d0 kernel/smpboot.c:164 kthread+0x468/0x490 kernel/kthread.c:327 ret_from_fork+0x1f/0x30