diff mbox series

[v2,5/6] nfc: llcp: protect nfc_llcp_sock_unlink() calls

Message ID 20220119075301.7346-6-krzysztof.kozlowski@canonical.com (mailing list archive)
State Deferred
Delegated to: Netdev Maintainers
Headers show
Series nfc: llcp: few cleanups/improvements | expand

Checks

Context Check Description
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix warning Target tree name not specified in the subject
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers success CCed 4 of 4 maintainers
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 22 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/tree_selection success Guessing tree name failed - patch did not apply

Commit Message

Krzysztof Kozlowski Jan. 19, 2022, 7:53 a.m. UTC 
nfc_llcp_sock_link() is called in all paths (bind/connect) as a last
action, still protected with lock_sock().  When cleaning up in
llcp_sock_release(), call nfc_llcp_sock_unlink() in a mirrored way:
earlier and still under the lock_sock().

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
---
 net/nfc/llcp_sock.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/net/nfc/llcp_sock.c b/net/nfc/llcp_sock.c
index 60985d1834a5..2d4cdce88a54 100644
--- a/net/nfc/llcp_sock.c
+++ b/net/nfc/llcp_sock.c
@@ -631,6 +631,11 @@  static int llcp_sock_release(struct socket *sock)
 		}
 	}
 
+	if (sock->type == SOCK_RAW)
+		nfc_llcp_sock_unlink(&local->raw_sockets, sk);
+	else
+		nfc_llcp_sock_unlink(&local->sockets, sk);
+
 	if (llcp_sock->reserved_ssap < LLCP_SAP_MAX)
 		nfc_llcp_put_ssap(llcp_sock->local, llcp_sock->ssap);
 
@@ -643,11 +648,6 @@  static int llcp_sock_release(struct socket *sock)
 	if (sk->sk_state == LLCP_DISCONNECTING)
 		return err;
 
-	if (sock->type == SOCK_RAW)
-		nfc_llcp_sock_unlink(&local->raw_sockets, sk);
-	else
-		nfc_llcp_sock_unlink(&local->sockets, sk);
-
 out:
 	sock_orphan(sk);
 	sock_put(sk);