Re: [PATCH] bpf: drop refcount if bpf_map_new_fd() fails in map_create()

From: Martin Lau
Date: Wed Feb 27 2019 - 11:53:20 EST


On Wed, Feb 27, 2019 at 10:36:25PM +0800, zerons wrote:
> In bpf/syscall.c, map_create() first set map->usercnt to 1, a file descriptor is
> supposed to return to userspace. When bpf_map_new_fd() fails, drop the refcount.
Thanks for the patch.

Please add a Fixes tag for bug fix in the future.

Fixes: bd5f5f4ecb78 ("bpf: Add BPF_MAP_GET_FD_BY_ID")
Acked-by: Martin KaFai Lau <kafai@xxxxxx>