Re: [PATCH net v2] bonding: fix u32 overflow in compute_gap()

[Jay Vosburgh]

Hangbin Liu <hangbin.liu@xxxxxxxxx> wrote:

>Hi Jay,
>On Fri, Aug 14, 2026 at 01:39:23PM +0800, Hangbin Liu wrote:
[...]
>>  struct alb_bond_info {
>>  	struct tlb_client_info	*tx_hashtbl; /* Dynamically allocated */
>> -	u32			unbalanced_load;
>> +	s64			unbalanced_load;
>>  	atomic_t		tx_rebalance_counter;
>>  	int			lp_counter;
>>  	/* -------- rlb parameters -------- */
>
>Sashiko reported that on a 32-bit system, these s64 numbers' read/write
>operations and division will tear. We need to use div_s64() for divisions
>and may also need to convert the number to atomic64_t for read/write operations.
>
>Do you know how bonding support works on a 32-bit system? Should we handle it?

	Bonding should function correctly on a 32 bit system for as long
as the base kernel continues to support 32 bit builds.

	-J

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	-Jay Vosburgh, jv@xxxxxxxxxxxxx