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| author | Pietro Borrello <borrello@diag.uniroma1.it> | 2023-01-28 16:29:17 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-02-09 11:28:08 +0100 |
| commit | 37c0cdf7e4919e5f76381ac60817b67bcbdacb50 (patch) | |
| tree | ec6c6f0c173e58527cef1e9902c503b1f316c395 | |
| parent | 7a435fe0b6bbf4ab5ede23e25658f3735caa2a65 (diff) | |
| download | linux-stable-37c0cdf7e4919e5f76381ac60817b67bcbdacb50.tar.gz linux-stable-37c0cdf7e4919e5f76381ac60817b67bcbdacb50.tar.bz2 linux-stable-37c0cdf7e4919e5f76381ac60817b67bcbdacb50.zip | |
net/tls: tls_is_tx_ready() checked list_entry
[ Upstream commit ffe2a22562444720b05bdfeb999c03e810d84cbb ]
tls_is_tx_ready() checks that list_first_entry() does not return NULL.
This condition can never happen. For empty lists, list_first_entry()
returns the list_entry() of the head, which is a type confusion.
Use list_first_entry_or_null() which returns NULL in case of empty
lists.
Fixes: a42055e8d2c3 ("net/tls: Add support for async encryption of records for performance")
Signed-off-by: Pietro Borrello <borrello@diag.uniroma1.it>
Link: https://lore.kernel.org/r/20230128-list-entry-null-check-tls-v1-1-525bbfe6f0d0@diag.uniroma1.it
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | net/tls/tls_sw.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c index 9ed978634125..a83d2b4275fa 100644 --- a/net/tls/tls_sw.c +++ b/net/tls/tls_sw.c @@ -2427,7 +2427,7 @@ static bool tls_is_tx_ready(struct tls_sw_context_tx *ctx) { struct tls_rec *rec; - rec = list_first_entry(&ctx->tx_list, struct tls_rec, list); + rec = list_first_entry_or_null(&ctx->tx_list, struct tls_rec, list); if (!rec) return false; |