Re: [PATCH] net: optimize cmpxchg in ip_idents_reserve

[Arvind Sankar]

On Fri, Jan 17, 2020 at 10:16:45AM -0800, Eric Dumazet wrote:
> WasÅt it the case back in 2016 already for linux-4.8 ?
> 
> What will prevent someone to send another report to netdev/lkml ?
> 
>  -fno-strict-overflow support is not a prereq for CONFIG_UBSAN.
> 
> Fact that we kept in lib/ubsan.c and lib/test_ubsan.c code for 
> test_ubsan_add_overflow() and test_ubsan_sub_overflow() is disturbing.
> 

No, it was bumped in 2018 in commit cafa0010cd51 ("Raise the minimum
required gcc version to 4.6"). That raised it from 3.2 -> 4.6.