From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793829647; b=5MusAZa1U6TOt/jSLhS88JpsZcbmAt9duVL15goGVGwZxiQ4mghjN4XwZN2iRrvK3PZU rjd5pAeiR8cqo5wmBrReyEw6djNkYsRYsYNz3sdaI9DTAtRpenQpugzC6B0HXumF1giKm KfM21AbBLbiu//LenMJYXSVidOnNiq+p1F+sXZ9Wfc6KR9DlQoXNbzWWNd6KlWdwIXOjl Zw5es8XF5g2lqsjOosaIJO5Bbtv1n6DAQZgRMMq+37ihJQok7oI1qhl64Xm33OlKk4+mY 0NBRAE0KtyKqaMuU3UHw9n7y4unCK4RaYGvNiyl9V9bmSUJgWGCaa3bZJVWuKR6bIaA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793829647; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=pns+Dw0Wx1YW4ICKcnXH4ZtEtBNZbuPw2k+R7QmFK6c=; b=g5wMZqsvbuZVKZXZlQptQW+y4D/NeT14fzz+If5n420cv1KQXLEszrWVWY4IBZPYq4zo UOmiqDeX/cp5aHTXJspXRFY3nDZDQxSFHvlGMDlxeOK9Jzm2RndYStEQjXZDGMxE09PLL OlCR5NZEUF0wA2oMfMJnfy97Hyek30wHEMdG8f07rnOf8cAMNBb760rKaSySe6dMZAS3r 24qyhloMOWQOQF5pdZ6Att+M6L/VXM7AAGqQpYwaTXPEej9zMjZm717LzecUiiLWCbYcG hXlZirWKW6RLMnbrUdWh/I2PPdd5DmrNwWg6jCIb32Y9CRKhps1BZkopRE6UIujX8Kw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=QGuDxB9R; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 53480606AC30; Wed, 4 Nov 2026 22:00:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=QGuDxB9R Received: by smtp.kernel.org (Postfix) with ESMTPSA id E0B681F000C1; Wed, 4 Nov 2026 22:00:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793829647; bh=pns+Dw0Wx1YW4ICKcnXH4ZtEtBNZbuPw2k+R7QmFK6c=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=QGuDxB9RS+UazJ51Obvmunl7Psa5A8aVAjEBwx8hWm7I9Q9TV3cqYpHM6f89CK9J9 YtgG1yl9WvFvEGim61xfXJlkc43WmCxR+p83KBS+4vRIwWMf8Fr1IUOdwneK/GrVxg MDiY8fnbZxTqnFNvjV7b7FvD1ioVHFiqP6Bm7gFc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Tyrel Datwyler , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 6.18 0254/1005] scsi: ibmvfc: check for NULL evt in implicit LOGO and target delete path Date: Wed, 4 Nov 2026 15:59:47 -0500 Message-ID: <20261104211050.978185151@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261104211043.516122098@linuxfoundation.org> References: <20261104211043.516122098@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Tyrel Datwyler [ Upstream commit 0122eab60b151d7815f420a91c7315944a037714 ] Unlike ibmvfc_tgt_implicit_logout the ibmvfc_tgt_implicit_logout_and_del path fails to check for a NULL evt returned from ibmvfc_get_reserved_event and passes that directly to ibmvfc_send_event which will unconditionally derefence the evt. Check for a NULL evt and perform same escalation as ibmvfc_implicit_logout. Signed-off-by: Tyrel Datwyler Link: https://patch.msgid.link/20260723000149.969416-4-tyreld@linux.ibm.com Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/ibmvscsi/ibmvfc.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c index 8d7c304636d99..63cc569284ded 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.c +++ b/drivers/scsi/ibmvscsi/ibmvfc.c @@ -4403,6 +4403,14 @@ static void ibmvfc_tgt_implicit_logout_and_del(struct ibmvfc_target *tgt) evt = __ibmvfc_tgt_get_implicit_logout_evt(tgt, ibmvfc_tgt_implicit_logout_and_del_done); + if (!evt) { + vhost->discovery_threads--; + ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); + kref_put(&tgt->kref, ibmvfc_release_tgt); + __ibmvfc_reset_host(vhost); + return; + } + ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_LOGOUT_RPORT_WAIT); if (ibmvfc_send_event(evt, vhost, default_timeout)) { vhost->discovery_threads--; -- 2.53.0