Re: [PATCH v3 0/7] fix use of pthread mutex between processes

[Stephen Hemminger <stephen@networkplumber.org>]

On Wed, 29 Apr 2026 11:46:37 -0700
Stephen Hemminger <stephen@networkplumber.org> wrote:

> Several drivers and the ethdev layer initialize pthread mutexes
> in shared memory with default (process-private) attributes.
> This is undefined behavior when secondary processes use them.
> 
> This series adds PTHREAD_PROCESS_SHARED to all affected mutexes.
> All are on control paths (firmware mailbox, hotplug, flow ops,
> PHY negotiation) where sleeping is acceptable.
> 
> See POSIX spec:
> https://pubs.opengroup.org/onlinepubs/009696899/functions/pthread_mutexattr_getpshared.html
> 
> 
> Stephen Hemminger (7):
>   eal: add helper to initialize process-shared mutex
>   ethdev: fix flow_ops_mutex for multi-process
>   net/failsafe: fix hotplug_mutex for multi-process
>   net/atlantic: fix mbox_mutex for multi-process
>   net/axgbe: fix mutexes for multi-process
>   net/bnxt: fix mutexes for multi-process
>   net/hinic: fix mutexes for multi-process


Applied to next-net