From nobody Mon Feb 9 01:32:06 2026 Received: from mx2.usergate.com (unknown [46.229.79.2]) (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 BE6BB1DE4C8; Thu, 17 Apr 2025 04:58:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=46.229.79.2 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744865893; cv=none; b=PSy17Lj7owk0AQw9HM6hRhkPJ5asSuasVS6vIv1nXlRcryTv31GUjtISFjAEVkKMVwrtS4QyYTgWa4mAo7oSvcWOgyIORlfp5LDb0N7vR4m0PnuX44G8eKAiLelDx6n5sKnw400t1uz8Oe19gctcxzFQdbEnfSr6E6LTlR9v7FU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744865893; c=relaxed/simple; bh=VYH/7Wow5L4HyEpvwlReBHdPmPzxrGo6yuuSH/jknT4=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Tdo8xPFjzFAQWJbodX5zP/bKTfQr0NA5Rrx/joGTBjNxU4xcClR4GnGImBPTmsnGJJPqKGFaufwvRd2z+7F6B+Fq8E34hz82Pa0309H9ZKBGGJ4x07UoDU+Uswi8EmeyUsT0WS2sMlYqravdMMXhEWiKpMLsXvgZ2sZuPRlnsGw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=usergate.com; spf=pass smtp.mailfrom=usergate.com; arc=none smtp.client-ip=46.229.79.2 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=usergate.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=usergate.com Received: from mail.usergate.com[192.168.90.36] by mx2.usergate.com with ESMTP id 70BAEE7064DE4059862C8CFC10E28BE8; Thu, 17 Apr 2025 11:22:27 +0700 From: Boris Belyavtsev To: CC: ,,"Boris Belyavtsev" Subject: [PATCH 1/3] scsi: aic79xx: check for non-NULL scb in ahd_handle_seqint Date: Thu, 17 Apr 2025 11:22:18 +0700 Message-ID: <20250417042220.782230-2-bbelyavtsev@usergate.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250417042220.782230-1-bbelyavtsev@usergate.com> References: <20250417042220.782230-1-bbelyavtsev@usergate.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: ESLSRV-EXCH-01.esafeline.com (192.168.90.36) To nsk02-mbx01.esafeline.com (10.10.1.35) X-Message-Id: B1258AD393FE4B438A685FD2A3B479AD X-MailFileId: E4B55F9E1EA845278A4BE9722970FDC4 Content-Type: text/plain; charset="utf-8" NULL pointer dereference is possible when compiled with AHD_DEBUG and AHD_SHOW_RECOVERY is set if data in SCBPTR =D0=B8 SCBPTR+1 ports is incorre= ct Found by Linux Verification Center (linuxtesting.org) with SVACE. Signed-off-by: Boris Belyavtsev --- drivers/scsi/aic7xxx/aic79xx_core.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/aic7xxx/aic79xx_core.c b/drivers/scsi/aic7xxx/aic= 79xx_core.c index f9372a81cd4e..ff9ae0f8e153 100644 --- a/drivers/scsi/aic7xxx/aic79xx_core.c +++ b/drivers/scsi/aic7xxx/aic79xx_core.c @@ -2205,14 +2205,16 @@ ahd_handle_seqint(struct ahd_softc *ahd, u_int ints= tat) ahd_print_path(ahd, scb); printk("data overrun detected %s. Tag =3D=3D 0x%x.= \n", ahd_lookup_phase_entry(lastphase)->phasemsg, - SCB_GET_TAG(scb)); + scb !=3D NULL ? SCB_GET_TAG(scb) : 0); ahd_print_path(ahd, scb); printk("%s seen Data Phase. Length =3D %ld. " "NumSGs =3D %d.\n", ahd_inb(ahd, SEQ_FLAGS) & DPHASE ? "Have" : "Haven't", - ahd_get_transfer_length(scb), scb->sg_count); - ahd_dump_sglist(scb); + scb !=3D NULL ? ahd_get_transfer_length(scb)= : -1, + scb !=3D NULL ? scb->sg_count : -1); + if (scb !=3D NULL) + ahd_dump_sglist(scb); } #endif -- 2.43.0 =D0=9D=D0=B0=D1=81=D1=82=D0=BE=D1=8F=D1=89=D0=B5=D0=B5 =D1=8D=D0=BB=D0=B5= =D0=BA=D1=82=D1=80=D0=BE=D0=BD=D0=BD=D0=BE=D0=B5 =D1=81=D0=BE=D0=BE=D0=B1= =D1=89=D0=B5=D0=BD=D0=B8=D0=B5 =D1=81=D0=BE=D0=B4=D0=B5=D1=80=D0=B6=D0=B8= =D1=82 =D0=B8=D0=BD=D1=84=D0=BE=D1=80=D0=BC=D0=B0=D1=86=D0=B8=D1=8E =D0=BA= =D0=BE=D0=BD=D1=84=D0=B8=D0=B4=D0=B5=D0=BD=D1=86=D0=B8=D0=B0=D0=BB=D1=8C=D0= =BD=D0=BE=D0=B3=D0=BE =D1=85=D0=B0=D1=80=D0=B0=D0=BA=D1=82=D0=B5=D1=80=D0= =B0, =D0=B0 =D1=82=D0=B0=D0=BA=D0=B6=D0=B5 =D0=BC=D0=BE=D0=B6=D0=B5=D1=82 = =D1=81=D0=BE=D0=B4=D0=B5=D1=80=D0=B6=D0=B0=D1=82=D1=8C =D0=BA=D0=BE=D0=BC= =D0=BC=D0=B5=D1=80=D1=87=D0=B5=D1=81=D0=BA=D1=83=D1=8E =D1=82=D0=B0=D0=B9= =D0=BD=D1=83 =D0=9E=D0=9E=D0=9E =C2=AB=D0=AE=D0=B7=D0=B5=D1=80=D0=B3=D0=B5= =D0=B9=D1=82=C2=BB =D0=98=D0=9D=D0=9D 5408308256 (UserGate). =D0=9D=D0=B5= =D0=BF=D1=80=D0=B0=D0=B2=D0=BE=D0=BC=D0=B5=D1=80=D0=BD=D0=BE=D0=B5 =D0=B8= =D1=81=D0=BF=D0=BE=D0=BB=D1=8C=D0=B7=D0=BE=D0=B2=D0=B0=D0=BD=D0=B8=D0=B5 / = =D1=80=D0=B0=D1=81=D0=BA=D1=80=D1=8B=D1=82=D0=B8=D0=B5 =D1=82=D0=B0=D0=BA= =D0=BE=D0=B2=D0=BE=D0=B9 =D0=B8=D0=BD=D1=84=D0=BE=D1=80=D0=BC=D0=B0=D1=86= =D0=B8=D0=B8 =D0=B7=D0=B0=D0=BF=D1=80=D0=B5=D1=89=D0=B5=D0=BD=D0=BE. =D0=95= =D1=81=D0=BB=D0=B8 =D0=B2=D1=8B =D0=BF=D0=BE=D0=BB=D1=83=D1=87=D0=B8=D0=BB= =D0=B8 =D0=BD=D0=B0=D1=81=D1=82=D0=BE=D1=8F=D1=89=D0=B5=D0=B5 =D1=81=D0=BE= =D0=BE=D0=B1=D1=89=D0=B5=D0=BD=D0=B8=D0=B5 =D0=BF=D0=BE =D0=BE=D1=88=D0=B8= =D0=B1=D0=BA=D0=B5, =D0=BF=D0=BE=D0=B6=D0=B0=D0=BB=D1=83=D0=B9=D1=81=D1=82= =D0=B0, =D1=81=D0=B2=D1=8F=D0=B6=D0=B8=D1=82=D0=B5=D1=81=D1=8C =D1=81 =D0= =BE=D1=82=D0=BF=D1=80=D0=B0=D0=B2=D0=B8=D1=82=D0=B5=D0=BB=D0=B5=D0=BC =D0= =B8 =D1=83=D0=B4=D0=B0=D0=BB=D0=B8=D1=82=D0=B5 =D0=B2=D1=81=D0=B5 =D0=BA=D0= =BE=D0=BF=D0=B8=D0=B8 =D1=81=D0=BE=D0=BE=D0=B1=D1=89=D0=B5=D0=BD=D0=B8=D1= =8F. =D0=9D=D0=B0=D1=81=D1=82=D0=BE=D1=8F=D1=89=D0=B5=D0=B5 =D1=81=D0=BE=D0= =BE=D0=B1=D1=89=D0=B5=D0=BD=D0=B8=D0=B5 =D0=BD=D0=B5 =D1=8F=D0=B2=D0=BB=D1= =8F=D0=B5=D1=82=D1=81=D1=8F =D0=BE=D1=84=D0=B5=D1=80=D1=82=D0=BE=D0=B9. =D0= =A1=D0=B2=D0=B5=D0=B4=D0=B5=D0=BD=D0=B8=D1=8F =D0=BE =D0=BF=D0=BB=D0=B0=D0= =BD=D0=B8=D1=80=D1=83=D0=B5=D0=BC=D1=8B=D1=85 =D0=BA =D1=80=D0=B0=D0=B7=D1= =80=D0=B0=D0=B1=D0=BE=D1=82=D0=BA=D0=B5 =D1=82=D0=B5=D1=85=D0=BD=D0=BE=D0= =BB=D0=BE=D0=B3=D0=B8=D1=87=D0=B5=D1=81=D0=BA=D0=B8=D1=85 =D1=80=D0=B5=D1= =88=D0=B5=D0=BD=D0=B8=D1=8F=D1=85, =D1=86=D0=B5=D0=BD=D0=BE=D0=B2=D0=BE=D0= =B9 =D0=BF=D0=BE=D0=BB=D0=B8=D1=82=D0=B8=D0=BA=D0=B5, =D0=B8=D0=BD=D1=8B=D0= =B5 =D1=81=D0=BE=D0=B4=D0=B5=D1=80=D0=B6=D0=B0=D1=89=D0=B8=D0=B5=D1=81=D1= =8F =D0=B2 =D1=81=D0=BE=D0=BE=D0=B1=D1=89=D0=B5=D0=BD=D0=B8=D0=B8 =D1=81=D0= =B2=D0=B5=D0=B4=D0=B5=D0=BD=D0=B8=D1=8F =D0=B8=D0=BC=D0=B5=D1=8E=D1=82 =D0= =B8=D1=81=D0=BA=D0=BB=D1=8E=D1=87=D0=B8=D1=82=D0=B5=D0=BB=D1=8C=D0=BD=D0=BE= =D0=B8=D0=BD=D1=84=D0=BE=D1=80=D0=BC=D0=B0=D1=86=D0=B8=D0=BE=D0=BD=D0=BD= =D1=8B=D1=85 =D1=85=D0=B0=D1=80=D0=B0=D0=BA=D1=82=D0=B5=D1=80 =D0=B8 =D0=BD= =D0=B5 =D0=B4=D0=BE=D0=BB=D0=B6=D0=BD=D1=8B =D0=B1=D1=8B=D1=82=D1=8C =D1=80= =D0=B0=D1=81=D1=86=D0=B5=D0=BD=D0=B5=D0=BD=D1=8B =D0=B2 =D0=BA=D0=B0=D1=87= =D0=B5=D1=81=D1=82=D0=B2=D0=B5 =D0=BE=D1=81=D0=BD=D0=BE=D0=B2=D0=B0=D0=BD= =D0=B8=D1=8F =D0=B4=D0=BB=D1=8F =D0=B2=D0=BE=D0=B7=D0=BD=D0=B8=D0=BA=D0=BD= =D0=BE=D0=B2=D0=B5=D0=BD=D0=B8=D1=8F =D0=BE=D0=B1=D1=8F=D0=B7=D0=B0=D1=82= =D0=B5=D0=BB=D1=8C=D1=81=D1=82=D0=B2 =D0=BB=D1=8E=D0=B1=D0=BE=D0=B3=D0=BE = =D1=81=D0=B2=D0=BE=D0=B9=D1=81=D1=82=D0=B2=D0=B0. From nobody Mon Feb 9 01:32:06 2026 Received: from mx2.usergate.com (unknown [46.229.79.2]) (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 012381DE3AC; Thu, 17 Apr 2025 04:57:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=46.229.79.2 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744865878; cv=none; b=XZ7KRCbEQ4RCc5defrI4AZVFpUmxXNDvwAK4uVjt20djJg4iU0VJM1Bm05gBTFbUEG4Vx2BK3smSl4uqGSH+SpKLlpWHo0aGQchEOgY4gEdhWuUBpkdN2tn7y22wKrDHKVYN3YEQPonNaapO7WSng4WzwUuReyz7EtDvWjB2Wd0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744865878; c=relaxed/simple; bh=QolKNjhVzMoUZI6l4ywmFBMt62EtnAuW+iC8PalOFIk=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=nJNrlaSXgwZeBlGlFFb0Uk9EZ9FdwQxmKHmc+pM51Au5Hgv7R1JpuO5323FzfNPHq+q8H0clz1MQoP7KZPLjFzIfOqRGm1Desl0fXkdb/SgBF64U6xjZoocWAW2AJAWoG81qRkZESmZ5oMEw0MHSHyENvnFGqiu1kTILVzYTIhk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=usergate.com; spf=pass smtp.mailfrom=usergate.com; arc=none smtp.client-ip=46.229.79.2 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=usergate.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=usergate.com Received: from mail.usergate.com[192.168.90.36] by mx2.usergate.com with ESMTP id 0DCB4AD3AEB144148BACF59E4357CE38; Thu, 17 Apr 2025 11:22:27 +0700 From: Boris Belyavtsev To: CC: ,,"Boris Belyavtsev" Subject: [PATCH 2/3] scsi: aic79xx: check for non-NULL scb in ahd_handle_pkt_busfree Date: Thu, 17 Apr 2025 11:22:19 +0700 Message-ID: <20250417042220.782230-3-bbelyavtsev@usergate.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250417042220.782230-1-bbelyavtsev@usergate.com> References: <20250417042220.782230-1-bbelyavtsev@usergate.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: ESLSRV-EXCH-01.esafeline.com (192.168.90.36) To nsk02-mbx01.esafeline.com (10.10.1.35) X-Message-Id: B375174590E74FA598FBA39598C8A588 X-MailFileId: 756730C677CF4547BE74AE673ACE2D86 Content-Type: text/plain; charset="utf-8" If hardware returns invalid scbid scb could be NULL Found by Linux Verification Center (linuxtesting.org) with SVACE. Signed-off-by: Boris Belyavtsev --- drivers/scsi/aic7xxx/aic79xx_core.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/aic7xxx/aic79xx_core.c b/drivers/scsi/aic7xxx/aic= 79xx_core.c index ff9ae0f8e153..27ec31457e7d 100644 --- a/drivers/scsi/aic7xxx/aic79xx_core.c +++ b/drivers/scsi/aic7xxx/aic79xx_core.c @@ -2997,9 +2997,10 @@ ahd_handle_pkt_busfree(struct ahd_softc *ahd, u_int = busfreetime) ahd_print_path(ahd, scb); printk("Unexpected PKT busfree condition\n"); ahd_dump_card_state(ahd); - ahd_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb), 'A', - SCB_GET_LUN(scb), SCB_GET_TAG(scb), - ROLE_INITIATOR, CAM_UNEXP_BUSFREE); + if (scb !=3D NULL) + ahd_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb), 'A', + SCB_GET_LUN(scb), SCB_GET_TAG(scb), + ROLE_INITIATOR, CAM_UNEXP_BUSFREE); /* Return restarting the sequencer. */ return (1); -- 2.43.0 =D0=9D=D0=B0=D1=81=D1=82=D0=BE=D1=8F=D1=89=D0=B5=D0=B5 =D1=8D=D0=BB=D0=B5= =D0=BA=D1=82=D1=80=D0=BE=D0=BD=D0=BD=D0=BE=D0=B5 =D1=81=D0=BE=D0=BE=D0=B1= =D1=89=D0=B5=D0=BD=D0=B8=D0=B5 =D1=81=D0=BE=D0=B4=D0=B5=D1=80=D0=B6=D0=B8= =D1=82 =D0=B8=D0=BD=D1=84=D0=BE=D1=80=D0=BC=D0=B0=D1=86=D0=B8=D1=8E =D0=BA= =D0=BE=D0=BD=D1=84=D0=B8=D0=B4=D0=B5=D0=BD=D1=86=D0=B8=D0=B0=D0=BB=D1=8C=D0= =BD=D0=BE=D0=B3=D0=BE =D1=85=D0=B0=D1=80=D0=B0=D0=BA=D1=82=D0=B5=D1=80=D0= =B0, =D0=B0 =D1=82=D0=B0=D0=BA=D0=B6=D0=B5 =D0=BC=D0=BE=D0=B6=D0=B5=D1=82 = =D1=81=D0=BE=D0=B4=D0=B5=D1=80=D0=B6=D0=B0=D1=82=D1=8C =D0=BA=D0=BE=D0=BC= =D0=BC=D0=B5=D1=80=D1=87=D0=B5=D1=81=D0=BA=D1=83=D1=8E =D1=82=D0=B0=D0=B9= =D0=BD=D1=83 =D0=9E=D0=9E=D0=9E =C2=AB=D0=AE=D0=B7=D0=B5=D1=80=D0=B3=D0=B5= =D0=B9=D1=82=C2=BB =D0=98=D0=9D=D0=9D 5408308256 (UserGate). =D0=9D=D0=B5= =D0=BF=D1=80=D0=B0=D0=B2=D0=BE=D0=BC=D0=B5=D1=80=D0=BD=D0=BE=D0=B5 =D0=B8= =D1=81=D0=BF=D0=BE=D0=BB=D1=8C=D0=B7=D0=BE=D0=B2=D0=B0=D0=BD=D0=B8=D0=B5 / = =D1=80=D0=B0=D1=81=D0=BA=D1=80=D1=8B=D1=82=D0=B8=D0=B5 =D1=82=D0=B0=D0=BA= =D0=BE=D0=B2=D0=BE=D0=B9 =D0=B8=D0=BD=D1=84=D0=BE=D1=80=D0=BC=D0=B0=D1=86= =D0=B8=D0=B8 =D0=B7=D0=B0=D0=BF=D1=80=D0=B5=D1=89=D0=B5=D0=BD=D0=BE. =D0=95= =D1=81=D0=BB=D0=B8 =D0=B2=D1=8B =D0=BF=D0=BE=D0=BB=D1=83=D1=87=D0=B8=D0=BB= =D0=B8 =D0=BD=D0=B0=D1=81=D1=82=D0=BE=D1=8F=D1=89=D0=B5=D0=B5 =D1=81=D0=BE= =D0=BE=D0=B1=D1=89=D0=B5=D0=BD=D0=B8=D0=B5 =D0=BF=D0=BE =D0=BE=D1=88=D0=B8= =D0=B1=D0=BA=D0=B5, =D0=BF=D0=BE=D0=B6=D0=B0=D0=BB=D1=83=D0=B9=D1=81=D1=82= =D0=B0, =D1=81=D0=B2=D1=8F=D0=B6=D0=B8=D1=82=D0=B5=D1=81=D1=8C =D1=81 =D0= =BE=D1=82=D0=BF=D1=80=D0=B0=D0=B2=D0=B8=D1=82=D0=B5=D0=BB=D0=B5=D0=BC =D0= =B8 =D1=83=D0=B4=D0=B0=D0=BB=D0=B8=D1=82=D0=B5 =D0=B2=D1=81=D0=B5 =D0=BA=D0= =BE=D0=BF=D0=B8=D0=B8 =D1=81=D0=BE=D0=BE=D0=B1=D1=89=D0=B5=D0=BD=D0=B8=D1= =8F. =D0=9D=D0=B0=D1=81=D1=82=D0=BE=D1=8F=D1=89=D0=B5=D0=B5 =D1=81=D0=BE=D0= =BE=D0=B1=D1=89=D0=B5=D0=BD=D0=B8=D0=B5 =D0=BD=D0=B5 =D1=8F=D0=B2=D0=BB=D1= =8F=D0=B5=D1=82=D1=81=D1=8F =D0=BE=D1=84=D0=B5=D1=80=D1=82=D0=BE=D0=B9. =D0= =A1=D0=B2=D0=B5=D0=B4=D0=B5=D0=BD=D0=B8=D1=8F =D0=BE =D0=BF=D0=BB=D0=B0=D0= =BD=D0=B8=D1=80=D1=83=D0=B5=D0=BC=D1=8B=D1=85 =D0=BA =D1=80=D0=B0=D0=B7=D1= =80=D0=B0=D0=B1=D0=BE=D1=82=D0=BA=D0=B5 =D1=82=D0=B5=D1=85=D0=BD=D0=BE=D0= =BB=D0=BE=D0=B3=D0=B8=D1=87=D0=B5=D1=81=D0=BA=D0=B8=D1=85 =D1=80=D0=B5=D1= =88=D0=B5=D0=BD=D0=B8=D1=8F=D1=85, =D1=86=D0=B5=D0=BD=D0=BE=D0=B2=D0=BE=D0= =B9 =D0=BF=D0=BE=D0=BB=D0=B8=D1=82=D0=B8=D0=BA=D0=B5, =D0=B8=D0=BD=D1=8B=D0= =B5 =D1=81=D0=BE=D0=B4=D0=B5=D1=80=D0=B6=D0=B0=D1=89=D0=B8=D0=B5=D1=81=D1= =8F =D0=B2 =D1=81=D0=BE=D0=BE=D0=B1=D1=89=D0=B5=D0=BD=D0=B8=D0=B8 =D1=81=D0= =B2=D0=B5=D0=B4=D0=B5=D0=BD=D0=B8=D1=8F =D0=B8=D0=BC=D0=B5=D1=8E=D1=82 =D0= =B8=D1=81=D0=BA=D0=BB=D1=8E=D1=87=D0=B8=D1=82=D0=B5=D0=BB=D1=8C=D0=BD=D0=BE= =D0=B8=D0=BD=D1=84=D0=BE=D1=80=D0=BC=D0=B0=D1=86=D0=B8=D0=BE=D0=BD=D0=BD= =D1=8B=D1=85 =D1=85=D0=B0=D1=80=D0=B0=D0=BA=D1=82=D0=B5=D1=80 =D0=B8 =D0=BD= =D0=B5 =D0=B4=D0=BE=D0=BB=D0=B6=D0=BD=D1=8B =D0=B1=D1=8B=D1=82=D1=8C =D1=80= =D0=B0=D1=81=D1=86=D0=B5=D0=BD=D0=B5=D0=BD=D1=8B =D0=B2 =D0=BA=D0=B0=D1=87= =D0=B5=D1=81=D1=82=D0=B2=D0=B5 =D0=BE=D1=81=D0=BD=D0=BE=D0=B2=D0=B0=D0=BD= =D0=B8=D1=8F =D0=B4=D0=BB=D1=8F =D0=B2=D0=BE=D0=B7=D0=BD=D0=B8=D0=BA=D0=BD= =D0=BE=D0=B2=D0=B5=D0=BD=D0=B8=D1=8F =D0=BE=D0=B1=D1=8F=D0=B7=D0=B0=D1=82= =D0=B5=D0=BB=D1=8C=D1=81=D1=82=D0=B2 =D0=BB=D1=8E=D0=B1=D0=BE=D0=B3=D0=BE = =D1=81=D0=B2=D0=BE=D0=B9=D1=81=D1=82=D0=B2=D0=B0. From nobody Mon Feb 9 01:32:06 2026 Received: from mx2.usergate.com (unknown [46.229.79.2]) (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 7C2F41DF972; Thu, 17 Apr 2025 04:58:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=46.229.79.2 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744865889; cv=none; b=K6AYJxvvm8KHSNdCM1wUANW11/G1EjWWV7Zb27YgUnSj466Tt7Le9dmw3LawhjETQZU0lV4jZkWDGegox/bU4GLwC6J/hfiRHXrjI0iUrMTdRP6TknaPwwKQ5c9fiKZgoRNh0B7DJHqM13WxKxVARzXIUtC5etik8x33f6WIdNg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744865889; c=relaxed/simple; bh=Od0yWLlZbKBUa36Zzz8mWeVChx1sO/abmn2CfT7dci0=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Y++HZVV93VqooYB331JtMsUPCVpSrewXou5jrtKspkhLZ4qUx/VXlxYpYBDuPDz9FkSYiRmPHMYc4xmt9ythbQR86gxc9Zyeuv2UFv0M9vKWWV/ovjlmSKIkfV3Hu58F6l11Rp4PaYHgZVEKn5zO6T8TNDvRTz/ND/F7NuxLhCM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=usergate.com; spf=pass smtp.mailfrom=usergate.com; arc=none smtp.client-ip=46.229.79.2 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=usergate.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=usergate.com Received: from mail.usergate.com[192.168.90.36] by mx2.usergate.com with ESMTP id 6C2D10B8719048AC9B342C1F91B4F3E6; Thu, 17 Apr 2025 11:22:28 +0700 From: Boris Belyavtsev To: CC: ,,"Boris Belyavtsev" Subject: [PATCH 3/3] scsi: aic79xx: check for non-NULL scb in ahd_linux_queue_abort_cmd Date: Thu, 17 Apr 2025 11:22:20 +0700 Message-ID: <20250417042220.782230-4-bbelyavtsev@usergate.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250417042220.782230-1-bbelyavtsev@usergate.com> References: <20250417042220.782230-1-bbelyavtsev@usergate.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: ESLSRV-EXCH-01.esafeline.com (192.168.90.36) To nsk02-mbx01.esafeline.com (10.10.1.35) X-Message-Id: 35772813839640AFB2B07F5FF5F13D01 X-MailFileId: 52CED540A56D494C8055DFF53352ED72 Content-Type: text/plain; charset="utf-8" possible NULL pointer dereference in case hardware returns invalid scb index Found by Linux Verification Center (linuxtesting.org) with SVACE. Signed-off-by: Boris Belyavtsev --- drivers/scsi/aic7xxx/aic79xx_osm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.c b/drivers/scsi/aic7xxx/aic7= 9xx_osm.c index 17dfc3c72110..7d40c7d80411 100644 --- a/drivers/scsi/aic7xxx/aic79xx_osm.c +++ b/drivers/scsi/aic7xxx/aic79xx_osm.c @@ -2265,7 +2265,8 @@ ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd) * and hope that the target responds. */ pending_scb =3D ahd_lookup_scb(ahd, active_scbptr); - pending_scb->flags |=3D SCB_RECOVERY_SCB|SCB_ABORT; + if (pending_scb =3D=3D NULL) + pending_scb->flags |=3D SCB_RECOVERY_SCB|SCB_ABORT; ahd_outb(ahd, MSG_OUT, HOST_MSG); ahd_outb(ahd, SCSISIGO, last_phase|ATNO); scmd_printk(KERN_INFO, cmd, "Device is active, asserting AT= N\n"); -- 2.43.0 =D0=9D=D0=B0=D1=81=D1=82=D0=BE=D1=8F=D1=89=D0=B5=D0=B5 =D1=8D=D0=BB=D0=B5= =D0=BA=D1=82=D1=80=D0=BE=D0=BD=D0=BD=D0=BE=D0=B5 =D1=81=D0=BE=D0=BE=D0=B1= =D1=89=D0=B5=D0=BD=D0=B8=D0=B5 =D1=81=D0=BE=D0=B4=D0=B5=D1=80=D0=B6=D0=B8= =D1=82 =D0=B8=D0=BD=D1=84=D0=BE=D1=80=D0=BC=D0=B0=D1=86=D0=B8=D1=8E =D0=BA= =D0=BE=D0=BD=D1=84=D0=B8=D0=B4=D0=B5=D0=BD=D1=86=D0=B8=D0=B0=D0=BB=D1=8C=D0= =BD=D0=BE=D0=B3=D0=BE =D1=85=D0=B0=D1=80=D0=B0=D0=BA=D1=82=D0=B5=D1=80=D0= =B0, =D0=B0 =D1=82=D0=B0=D0=BA=D0=B6=D0=B5 =D0=BC=D0=BE=D0=B6=D0=B5=D1=82 = =D1=81=D0=BE=D0=B4=D0=B5=D1=80=D0=B6=D0=B0=D1=82=D1=8C =D0=BA=D0=BE=D0=BC= =D0=BC=D0=B5=D1=80=D1=87=D0=B5=D1=81=D0=BA=D1=83=D1=8E =D1=82=D0=B0=D0=B9= =D0=BD=D1=83 =D0=9E=D0=9E=D0=9E =C2=AB=D0=AE=D0=B7=D0=B5=D1=80=D0=B3=D0=B5= =D0=B9=D1=82=C2=BB =D0=98=D0=9D=D0=9D 5408308256 (UserGate). =D0=9D=D0=B5= =D0=BF=D1=80=D0=B0=D0=B2=D0=BE=D0=BC=D0=B5=D1=80=D0=BD=D0=BE=D0=B5 =D0=B8= =D1=81=D0=BF=D0=BE=D0=BB=D1=8C=D0=B7=D0=BE=D0=B2=D0=B0=D0=BD=D0=B8=D0=B5 / = =D1=80=D0=B0=D1=81=D0=BA=D1=80=D1=8B=D1=82=D0=B8=D0=B5 =D1=82=D0=B0=D0=BA= =D0=BE=D0=B2=D0=BE=D0=B9 =D0=B8=D0=BD=D1=84=D0=BE=D1=80=D0=BC=D0=B0=D1=86= =D0=B8=D0=B8 =D0=B7=D0=B0=D0=BF=D1=80=D0=B5=D1=89=D0=B5=D0=BD=D0=BE. =D0=95= =D1=81=D0=BB=D0=B8 =D0=B2=D1=8B =D0=BF=D0=BE=D0=BB=D1=83=D1=87=D0=B8=D0=BB= =D0=B8 =D0=BD=D0=B0=D1=81=D1=82=D0=BE=D1=8F=D1=89=D0=B5=D0=B5 =D1=81=D0=BE= =D0=BE=D0=B1=D1=89=D0=B5=D0=BD=D0=B8=D0=B5 =D0=BF=D0=BE =D0=BE=D1=88=D0=B8= =D0=B1=D0=BA=D0=B5, =D0=BF=D0=BE=D0=B6=D0=B0=D0=BB=D1=83=D0=B9=D1=81=D1=82= =D0=B0, =D1=81=D0=B2=D1=8F=D0=B6=D0=B8=D1=82=D0=B5=D1=81=D1=8C =D1=81 =D0= =BE=D1=82=D0=BF=D1=80=D0=B0=D0=B2=D0=B8=D1=82=D0=B5=D0=BB=D0=B5=D0=BC =D0= =B8 =D1=83=D0=B4=D0=B0=D0=BB=D0=B8=D1=82=D0=B5 =D0=B2=D1=81=D0=B5 =D0=BA=D0= =BE=D0=BF=D0=B8=D0=B8 =D1=81=D0=BE=D0=BE=D0=B1=D1=89=D0=B5=D0=BD=D0=B8=D1= =8F. =D0=9D=D0=B0=D1=81=D1=82=D0=BE=D1=8F=D1=89=D0=B5=D0=B5 =D1=81=D0=BE=D0= =BE=D0=B1=D1=89=D0=B5=D0=BD=D0=B8=D0=B5 =D0=BD=D0=B5 =D1=8F=D0=B2=D0=BB=D1= =8F=D0=B5=D1=82=D1=81=D1=8F =D0=BE=D1=84=D0=B5=D1=80=D1=82=D0=BE=D0=B9. =D0= =A1=D0=B2=D0=B5=D0=B4=D0=B5=D0=BD=D0=B8=D1=8F =D0=BE =D0=BF=D0=BB=D0=B0=D0= =BD=D0=B8=D1=80=D1=83=D0=B5=D0=BC=D1=8B=D1=85 =D0=BA =D1=80=D0=B0=D0=B7=D1= =80=D0=B0=D0=B1=D0=BE=D1=82=D0=BA=D0=B5 =D1=82=D0=B5=D1=85=D0=BD=D0=BE=D0= =BB=D0=BE=D0=B3=D0=B8=D1=87=D0=B5=D1=81=D0=BA=D0=B8=D1=85 =D1=80=D0=B5=D1= =88=D0=B5=D0=BD=D0=B8=D1=8F=D1=85, =D1=86=D0=B5=D0=BD=D0=BE=D0=B2=D0=BE=D0= =B9 =D0=BF=D0=BE=D0=BB=D0=B8=D1=82=D0=B8=D0=BA=D0=B5, =D0=B8=D0=BD=D1=8B=D0= =B5 =D1=81=D0=BE=D0=B4=D0=B5=D1=80=D0=B6=D0=B0=D1=89=D0=B8=D0=B5=D1=81=D1= =8F =D0=B2 =D1=81=D0=BE=D0=BE=D0=B1=D1=89=D0=B5=D0=BD=D0=B8=D0=B8 =D1=81=D0= =B2=D0=B5=D0=B4=D0=B5=D0=BD=D0=B8=D1=8F =D0=B8=D0=BC=D0=B5=D1=8E=D1=82 =D0= =B8=D1=81=D0=BA=D0=BB=D1=8E=D1=87=D0=B8=D1=82=D0=B5=D0=BB=D1=8C=D0=BD=D0=BE= =D0=B8=D0=BD=D1=84=D0=BE=D1=80=D0=BC=D0=B0=D1=86=D0=B8=D0=BE=D0=BD=D0=BD= =D1=8B=D1=85 =D1=85=D0=B0=D1=80=D0=B0=D0=BA=D1=82=D0=B5=D1=80 =D0=B8 =D0=BD= =D0=B5 =D0=B4=D0=BE=D0=BB=D0=B6=D0=BD=D1=8B =D0=B1=D1=8B=D1=82=D1=8C =D1=80= =D0=B0=D1=81=D1=86=D0=B5=D0=BD=D0=B5=D0=BD=D1=8B =D0=B2 =D0=BA=D0=B0=D1=87= =D0=B5=D1=81=D1=82=D0=B2=D0=B5 =D0=BE=D1=81=D0=BD=D0=BE=D0=B2=D0=B0=D0=BD= =D0=B8=D1=8F =D0=B4=D0=BB=D1=8F =D0=B2=D0=BE=D0=B7=D0=BD=D0=B8=D0=BA=D0=BD= =D0=BE=D0=B2=D0=B5=D0=BD=D0=B8=D1=8F =D0=BE=D0=B1=D1=8F=D0=B7=D0=B0=D1=82= =D0=B5=D0=BB=D1=8C=D1=81=D1=82=D0=B2 =D0=BB=D1=8E=D0=B1=D0=BE=D0=B3=D0=BE = =D1=81=D0=B2=D0=BE=D0=B9=D1=81=D1=82=D0=B2=D0=B0.