From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 85E244CA260 for ; Tue, 19 May 2026 10:24:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779186244; cv=none; b=ClWTQ7IIKtpgst37W4Jbb40YDsDRuLlkwjmqk7/oBrHxHMmUj6A/SulHCXxG0938lOcA8Jo8++pq2Ttkt3lXWy5d3IPiLZq8eAtrYZes40ATSWMhqRpJ3QTV9ebSkEvDHTFn1DfOr/tNVJpATRlAhoCY0ctJUuZv4n3FiicXoew= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779186244; c=relaxed/simple; bh=/kKkibd7I4UJ09vAtMQS+No+nXWxHYtsFqDZ55RCPY8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=KTYlp22EddbdkRVeyyZR2h89Q8Vmc8maROgVE/yv4djjSZ90TBLTREjslENFuFW95gxnYN0sGfbj/3IetEoMhMZpXorSG9L3c8Y9eewDGoPJ//NgvDfcPYZzvmJR/lHgLAipEamioWo/6bNQRCbg/ghuZE6YUre7ZhVUIAggWvc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=A5ZTqLxK; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="A5ZTqLxK" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1779186241; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=rsISW/5Ynsi9gefanojoMknHhkwuwBucOgMcvE2JXxc=; b=A5ZTqLxKAprL5CKaWni3PfWin8kg5LGblC9+eOAF8+e/MuSB1IfroDeLW6t0wmtZsVEaQZ z2pORRv8TWFkLRdM0XIA969izE4lsamZHbvbLD+eTBhNvSfrvUazIf3cIzDa3y+aCNHfvX yC7ld9YWYgrWJH9vTb+EtZZh8xZ4zvU= Received: from mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-497-I8skbF-WM5mTJBuWOjOFaA-1; Tue, 19 May 2026 06:23:56 -0400 X-MC-Unique: I8skbF-WM5mTJBuWOjOFaA-1 X-Mimecast-MFC-AGG-ID: I8skbF-WM5mTJBuWOjOFaA_1779186234 Received: from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.17]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 7E4C519560A7; Tue, 19 May 2026 10:23:54 +0000 (UTC) Received: from warthog.procyon.org.com (unknown [10.44.48.33]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 55FAB1956053; Tue, 19 May 2026 10:23:51 +0000 (UTC) From: David Howells To: Steve French Cc: David Howells , Paulo Alcantara , Shyam Prasad N , Tom Talpey , Stefan Metzmacher , Mina Almasry , linux-cifs@vger.kernel.org, linux-kernel@vger.kernel.org, netfs@lists.linux.dev, linux-fsdevel@vger.kernel.org Subject: [RFC PATCH 22/36] cifs: Trace smb1/2_copy_to_prepped_buffers() Date: Tue, 19 May 2026 11:21:40 +0100 Message-ID: <20260519102158.592165-23-dhowells@redhat.com> In-Reply-To: <20260519102158.592165-1-dhowells@redhat.com> References: <20260519102158.592165-1-dhowells@redhat.com> Precedence: bulk X-Mailing-List: linux-cifs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 Add a tracepoint to smb1/2_copy_to_prepped_buffers() so that bulk data read (such as a Read op) can be checked. Signed-off-by: David Howells cc: Steve French cc: Paulo Alcantara cc: Shyam Prasad N cc: linux-cifs@vger.kernel.org cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org --- fs/smb/client/smb1transport.c | 1 + fs/smb/client/smb2transport.c | 1 + fs/smb/client/trace.h | 21 +++++++++++++++++++++ 3 files changed, 23 insertions(+) diff --git a/fs/smb/client/smb1transport.c b/fs/smb/client/smb1transport.c index ba887284fadd..598579b564ae 100644 --- a/fs/smb/client/smb1transport.c +++ b/fs/smb/client/smb1transport.c @@ -829,6 +829,7 @@ static void smb1_copy_to_prepped_buffers(struct TCP_Server_Info *server, return; } + trace_smb3_copy_to_buf(smb, &dest, skip, to_copy); if (!rxq->refillable) { size_t got; diff --git a/fs/smb/client/smb2transport.c b/fs/smb/client/smb2transport.c index 404bb8b1b3c3..73db90ab8a52 100644 --- a/fs/smb/client/smb2transport.c +++ b/fs/smb/client/smb2transport.c @@ -1236,6 +1236,7 @@ static void smb2_copy_to_prepped_buffers(struct TCP_Server_Info *server, return; } + trace_smb3_copy_to_buf(smb, &dest, skip, to_copy); if (!rxq->refillable) { size_t got; diff --git a/fs/smb/client/trace.h b/fs/smb/client/trace.h index 2cdbd8249af0..e9abcc5cf83a 100644 --- a/fs/smb/client/trace.h +++ b/fs/smb/client/trace.h @@ -2117,6 +2117,27 @@ TRACE_EVENT(smb3_message, __entry->ref) ); +TRACE_EVENT(smb3_copy_to_buf, + TP_PROTO(const struct smb_message *smb, const struct iov_iter *dest, + unsigned int msg_offset, unsigned int len), + TP_ARGS(smb, dest, msg_offset, len), + TP_STRUCT__entry( + __field(unsigned int, smb_message) + __field(unsigned int, dest_len) + __field(unsigned int, msg_offset) + __field(unsigned int, len) + ), + TP_fast_assign( + __entry->smb_message = smb->debug_id; + __entry->dest_len = iov_iter_count(dest); + __entry->msg_offset = msg_offset; + __entry->len = len; + ), + TP_printk("MSG=%08x m=%x sl=%x dl=%x", + __entry->smb_message, + __entry->msg_offset, __entry->len, __entry->dest_len) + ); + #undef EM #undef E_ #endif /* _CIFS_TRACE_H */