diff options
| author | Paolo Abeni <pabeni@redhat.com> | 2023-09-21 21:49:45 +0200 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2023-09-21 21:49:45 +0200 |
| commit | e9cbc89067cce78211c8629c78e931c0fe64e29d (patch) | |
| tree | 95662373d0a7b4adc589fec61e120586d476de71 /kernel/bpf/queue_stack_maps.c | |
| parent | f30e5323a188cfc2d74b04f222cea0dbe9ffd6e6 (diff) | |
| parent | 27bbf45eae9ca98877a2d52a92a188147cd61b07 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.
No conflicts.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'kernel/bpf/queue_stack_maps.c')
| -rw-r--r-- | kernel/bpf/queue_stack_maps.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/kernel/bpf/queue_stack_maps.c b/kernel/bpf/queue_stack_maps.c index 8d2ddcb7566b..d869f51ea93a 100644 --- a/kernel/bpf/queue_stack_maps.c +++ b/kernel/bpf/queue_stack_maps.c @@ -98,7 +98,12 @@ static long __queue_map_get(struct bpf_map *map, void *value, bool delete) int err = 0; void *ptr; - raw_spin_lock_irqsave(&qs->lock, flags); + if (in_nmi()) { + if (!raw_spin_trylock_irqsave(&qs->lock, flags)) + return -EBUSY; + } else { + raw_spin_lock_irqsave(&qs->lock, flags); + } if (queue_stack_map_is_empty(qs)) { memset(value, 0, qs->map.value_size); @@ -128,7 +133,12 @@ static long __stack_map_get(struct bpf_map *map, void *value, bool delete) void *ptr; u32 index; - raw_spin_lock_irqsave(&qs->lock, flags); + if (in_nmi()) { + if (!raw_spin_trylock_irqsave(&qs->lock, flags)) + return -EBUSY; + } else { + raw_spin_lock_irqsave(&qs->lock, flags); + } if (queue_stack_map_is_empty(qs)) { memset(value, 0, qs->map.value_size); @@ -193,7 +203,12 @@ static long queue_stack_map_push_elem(struct bpf_map *map, void *value, if (flags & BPF_NOEXIST || flags > BPF_EXIST) return -EINVAL; - raw_spin_lock_irqsave(&qs->lock, irq_flags); + if (in_nmi()) { + if (!raw_spin_trylock_irqsave(&qs->lock, irq_flags)) + return -EBUSY; + } else { + raw_spin_lock_irqsave(&qs->lock, irq_flags); + } if (queue_stack_map_is_full(qs)) { if (!replace) { |