(unnamed net_device) (uninitialized): option downdelay: invalid value (18446744073709551615)
(unnamed net_device) (uninitialized): option downdelay: allowed values 0 - 2147483647
WARNING: kernel stack regs at 0000000003ea1e6a in syz-executor5:10666 has bad 'bp' value           (null)
unwind stack type:0 next_sp:          (null) mask:0x2 graph_idx:0
00000000128cf965: ffff8801ca6be890 (0xffff8801ca6be890)
000000000a6f4a36: ffffffff812d399d (__save_stack_trace+0x7d/0xf0)
00000000fcf15358: 0000000000000000 ...
000000007df5e8a1: ffff8801ca6b8000 (0xffff8801ca6b8000)
00000000ff8c92a4: ffff8801ca6c0000 (0xffff8801ca6c0000)