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| author | Jakub Kicinski <kuba@kernel.org> | 2024-02-21 17:02:30 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-02-21 17:02:30 -0800 |
| commit | 1e07900d87f16ead22ffd9f8d27f2655055bf30c (patch) | |
| tree | 5d6678d660aa4a4b3d341cbf42692124e281e845 | |
| parent | 9990889be14288d4f1743e4768222d5032a79c27 (diff) | |
| parent | 5d78b73e851455d525a064f3b042b29fdc0c1a4a (diff) | |
| download | linux-1e07900d87f16ead22ffd9f8d27f2655055bf30c.tar.gz | |
Merge branch 'tools-ynl-fix-impossible-errors'
Jakub Kicinski says:
====================
tools: ynl: fix impossible errors
Fix bugs discovered while I was hacking in low level stuff in YNL
and kept breaking the socket, exercising the "impossible" error paths.
v1: https://lore.kernel.org/all/20240217001742.2466993-1-kuba@kernel.org/
====================
Link: https://lore.kernel.org/r/20240220161112.2735195-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | tools/net/ynl/lib/ynl.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/tools/net/ynl/lib/ynl.c b/tools/net/ynl/lib/ynl.c index c82a7f41b31c57..6e6d474c836647 100644 --- a/tools/net/ynl/lib/ynl.c +++ b/tools/net/ynl/lib/ynl.c @@ -466,6 +466,8 @@ ynl_gemsg_start_dump(struct ynl_sock *ys, __u32 id, __u8 cmd, __u8 version) int ynl_recv_ack(struct ynl_sock *ys, int ret) { + struct ynl_parse_arg yarg = { .ys = ys, }; + if (!ret) { yerr(ys, YNL_ERROR_EXPECT_ACK, "Expecting an ACK but nothing received"); @@ -478,7 +480,7 @@ int ynl_recv_ack(struct ynl_sock *ys, int ret) return ret; } return mnl_cb_run(ys->rx_buf, ret, ys->seq, ys->portid, - ynl_cb_null, ys); + ynl_cb_null, &yarg); } int ynl_cb_null(const struct nlmsghdr *nlh, void *data) @@ -586,7 +588,13 @@ static int ynl_sock_read_family(struct ynl_sock *ys, const char *family_name) return err; } - return ynl_recv_ack(ys, err); + err = ynl_recv_ack(ys, err); + if (err < 0) { + free(ys->mcast_groups); + return err; + } + + return 0; } struct ynl_sock * @@ -741,11 +749,14 @@ err_free: static int ynl_ntf_trampoline(const struct nlmsghdr *nlh, void *data) { - return ynl_ntf_parse((struct ynl_sock *)data, nlh); + struct ynl_parse_arg *yarg = data; + + return ynl_ntf_parse(yarg->ys, nlh); } int ynl_ntf_check(struct ynl_sock *ys) { + struct ynl_parse_arg yarg = { .ys = ys, }; ssize_t len; int err; @@ -767,7 +778,7 @@ int ynl_ntf_check(struct ynl_sock *ys) return len; err = mnl_cb_run2(ys->rx_buf, len, ys->seq, ys->portid, - ynl_ntf_trampoline, ys, + ynl_ntf_trampoline, &yarg, ynl_cb_array, NLMSG_MIN_TYPE); if (err < 0) return err; |