0 pages HighMem/MovableOnly 171459 pages reserved 0 pages cma reserved ------------[ cut here ]------------ HSR: Could not send supervision frame WARNING: CPU: 0 PID: 17 at net/hsr/hsr_device.c:294 send_hsr_supervision_frame+0x5fe/0x840 net/hsr/hsr_device.c:294 Modules linked in: CPU: 0 PID: 17 Comm: ksoftirqd/0 Not tainted 6.4.0-rc4-syzkaller-00031-g8b817fded42d #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:send_hsr_supervision_frame+0x5fe/0x840 net/hsr/hsr_device.c:294 Code: 04 31 ff 89 de e8 32 8a 95 f7 84 db 0f 85 01 ff ff ff e8 45 8e 95 f7 48 c7 c7 80 e1 89 8b c6 05 4f 13 76 04 01 e8 72 4c 5d f7 <0f> 0b e9 e2 fe ff ff e8 26 8e 95 f7 41 be 3c 00 00 00 ba 01 00 00 RSP: 0018:ffffc90000437b60 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000100 RDX: ffff888013ab2400 RSI: ffffffff814c03e7 RDI: 0000000000000001 RBP: ffffc90000437bc0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 000000003a525348 R12: ffff888071ee2080 R13: 0000000000000000 R14: 0000000000000017 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff88802c600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6f9e639dc4 CR3: 000000001dee6000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hsr_announce+0x10d/0x370 net/hsr/hsr_device.c:382 call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700 expire_timers+0x29b/0x4b0 kernel/time/timer.c:1751 __run_timers kernel/time/timer.c:2022 [inline] __run_timers kernel/time/timer.c:1995 [inline] run_timer_softirq+0x326/0x910 kernel/time/timer.c:2035 __do_softirq+0x1d4/0x905 kernel/softirq.c:571 run_ksoftirqd kernel/softirq.c:939 [inline] run_ksoftirqd+0x31/0x60 kernel/softirq.c:931 smpboot_thread_fn+0x659/0x9e0 kernel/smpboot.c:164 kthread+0x344/0x440 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308