Wow. First time I've seen THAT. What firmware is on the Orbi? Maybe this is a good time for a "Factory Reset" and configure from scratch. If it is less than one year old, it should be under warranty.
It is attached to a Surfboard 6141 modem. I tried a factory reset, but it did not make a difference. The panic occurs in a function related to neighbor advertisements (ecm_interface_send_neighbour_solicitation), so I tried disabling IPv6 a week ago - no reboot since (though this is just a workaround, of course; you'd expect a modern router to properly support IPv6). The panic log indicates that an alignment exception occurs when executing a LDREX instruction; I believe this occurs in atomic_dec_and_test in neigh_release (which is inlined in ecm_interface_send_neighbour_solicitation; this atomically decrements the reference count in the neighbour struct). I am not too familiar with ARMv7; does LDREX require a page-aligned pointer? If so, I think this is the cause - the refcnt member in struct neighbour is at offset 0x18, which isn't page-aligned. I can provide a full panic log for your engineers to look at.
My guess is this is something that Netgear engineers would enjoy seeing. Alas, everyone on this community forum is a volunteer who happens to enjoy participating. In two years, I have never had the impression that Netgear engineers monitor or participate in the myriad of user forums. If the Orbi is still in the 90 days of "complimentary support", I urge you to file a support ticket directly with Netgear. If you have had it more than 90 days, the best strategy is to interest one of the forum "moderators" in the problem. Such as @Dustin_V or @Blanca_O
It is attached to a Surfboard 6141 modem. I tried a factory reset, but it did not make a difference. The panic occurs in a function related to neighbor advertisements (ecm_interface_send_neighbour_solicitation), so I tried disabling IPv6 a week ago - no reboot since (though this is just a workaround, of course; you'd expect a modern router to properly support IPv6). The panic log indicates that an alignment exception occurs when executing a LDREX instruction; I believe this occurs in atomic_dec_and_test in neigh_release (which is inlined in ecm_interface_send_neighbour_solicitation; this atomically decrements the reference count in the neighbour struct). I am not too familiar with ARMv7; does LDREX require a page-aligned pointer? If so, I think this is the cause - the refcnt member in struct neighbour is at offset 0x18, which isn't page-aligned. I can provide a full panic log for your engineers to look at.
