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3289d17b7a
/proc/net/igmp walks the multicast list locklessly under RCU and reads timer-related fields (im->tm_running, im->reporter, im->timer.expires) to print the timer state of multicast memberships. Concurrently, these fields are modified under im->lock spinlock in timer management paths (igmp_stop_timer(), igmp_start_timer(), and igmp_timer_expire()). Fix this intentional lockless snapshot by annotating the lockless reads with READ_ONCE() and the updates with WRITE_ONCE(). Signed-off-by: Yuyang Huang <yuyanghuang@google.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20260605014318.3890804-3-yuyanghuang@google.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
3219 lines
76 KiB
3219 lines
76 KiB