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libbpf: Fix memleak in libbpf_netlink_recv()

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Ensure that libbpf_netlink_recv() frees dynamically allocated buffer in
all code paths.

Fixes: 9c3de619e13e ("libbpf: Use dynamically allocated buffer when receiving netlink messages")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/bpf/20220217073958.276959-1-andrii@kernel.org
This commit is contained in:
Andrii Nakryiko
2022-02-16 23:39:58 -08:00
committed by Andrii Nakryiko
parent 6edaacad4f
commit 33201b7ebd
1 changed files with 5 additions and 3 deletions
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8
src/netlink.c
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@@ -176,7 +176,8 @@ start:
libbpf_nla_dump_errormsg(nh); libbpf_nla_dump_errormsg(nh);
goto done; goto done;
case NLMSG_DONE: case NLMSG_DONE:
return 0; ret = 0;
goto done;
default: default:
break; break;
} }
@@ -188,9 +189,10 @@ start:
case NL_NEXT: case NL_NEXT:
goto start; goto start;
case NL_DONE: case NL_DONE:
return 0; ret = 0;
goto done;
default: default:
return ret; goto done;
} }
} }
} }