From patchwork Tue Feb 27 16:41:24 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nilesh Javali X-Patchwork-Id: 777719 Received: from mx0b-0016f401.pphosted.com (mx0b-0016f401.pphosted.com [67.231.156.173]) (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 BC38C8836 for ; Tue, 27 Feb 2024 16:42:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=67.231.156.173 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709052128; cv=none; b=AJa0BDB0rQ3JpR1QsuO8HLBde6IQQsJtgFylvFt7ks2mipX1yyvWzP8MnHtPf5flaLuiWqlmUy804OLSXxskj+gAFKTDcpVuYpjn8F21lxRaT3/UwGJg9Q6vsJhJdD2gSNbV/GUosjS4vltaAw8gHS49l+KsGz8MiRZdmYULDvg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709052128; c=relaxed/simple; bh=BbKbSzHfk9BrJB3cMW043QVtYFCqL7bhcIEU+GWZZTw=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=oXZok8hfTVaBQ5E9MLC1UuePIoH59Euahmr7OnrTi2C8HbPf03caEUktsWZ47A6cpGu6xf7XOzRKRZiLAJijdjMZ3dJpZB5/Gc2S+be/MtlIipzUmeOGb8icLbkmackx3705O7ygqF5OcvpWjFm2q/4oOc92XRLoNpGlenUUwuM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=marvell.com; spf=pass smtp.mailfrom=marvell.com; dkim=pass (2048-bit key) header.d=marvell.com header.i=@marvell.com header.b=GmkMekaG; arc=none smtp.client-ip=67.231.156.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=marvell.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=marvell.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=marvell.com header.i=@marvell.com header.b="GmkMekaG" Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 41RFgU0H004861; Tue, 27 Feb 2024 08:42:04 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding:content-type; s= pfpt0220; bh=62ycmwNVPNAkcvICQgQcTD6ARa9ofgITuNAXQKKc3Pc=; b=Gmk MekaG5co03t7+VrKIpQp/2otFvF8v7AGpxwjOpPqEezeF2Y3dcLDod0tbDx1GZkH JRPu8QM3JIokoNk2zxrXC6cH9cmG/amcQ5/ZhnjfZMTT1aSaXuD4fOeM5Uhux1YL X4Aaq5FQRaSWU5Puk34ClT4kQLb5bHp02Rrg6cEKnmpt5ELniaUzipuIYEdeNCpP hm59SbgPGkmjg6WwpsoysqViFTs6ZHAr4EPOGUZ3wNM/ifpV4CjKiLAx8yfT4Vj3 qcPZw7+2a+8lH2SHN/UyR4ZHnBxct+4sDW7RdFLwaMDsfOYQ1/ZBfuzO9mYR+zCy K6axGbd+vDINCZ+e/Gg== Received: from dc5-exch05.marvell.com ([199.233.59.128]) by mx0b-0016f401.pphosted.com (PPS) with ESMTPS id 3whjm689hn-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 27 Feb 2024 08:42:03 -0800 (PST) Received: from DC5-EXCH02.marvell.com (10.69.176.39) by DC5-EXCH05.marvell.com (10.69.176.209) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.1258.12; Tue, 27 Feb 2024 08:42:02 -0800 Received: from DC5-EXCH05.marvell.com (10.69.176.209) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server (TLS) id 15.0.1497.48; Tue, 27 Feb 2024 08:42:01 -0800 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH05.marvell.com (10.69.176.209) with Microsoft SMTP Server id 15.2.1258.12 via Frontend Transport; Tue, 27 Feb 2024 08:42:01 -0800 Received: from stgdev-a5u16.punelab.marvell.com (stgdev-a5u16.punelab.marvell.com [10.31.33.187]) by maili.marvell.com (Postfix) with ESMTP id 47B7A3F70A9; Tue, 27 Feb 2024 08:41:59 -0800 (PST) From: Nilesh Javali To: CC: , , , , , Subject: [PATCH v2 08/11] qla2xxx: Fix double free of fcport Date: Tue, 27 Feb 2024 22:11:24 +0530 Message-ID: <20240227164127.36465-9-njavali@marvell.com> X-Mailer: git-send-email 2.23.1 In-Reply-To: <20240227164127.36465-1-njavali@marvell.com> References: <20240227164127.36465-1-njavali@marvell.com> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Proofpoint-ORIG-GUID: Pdvi5-D33zwtnaF4V-3dov26HscjyIV2 X-Proofpoint-GUID: Pdvi5-D33zwtnaF4V-3dov26HscjyIV2 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-27_03,2024-02-27_01,2023-05-22_02 From: Saurav Kashyap The server was crashing after LOGO because fcport was getting freed twice. -----------[ cut here ]----------- kernel BUG at mm/slub.c:371! invalid opcode: 0000 1 SMP PTI CPU: 35 PID: 4610 Comm: bash Kdump: loaded Tainted: G OE --------- - - 4.18.0-425.3.1.el8.x86_64 #1 Hardware name: HPE ProLiant DL360 Gen10/ProLiant DL360 Gen10, BIOS U32 09/03/2021 RIP: 0010:set_freepointer.part.57+0x0/0x10 RSP: 0018:ffffb07107027d90 EFLAGS: 00010246 RAX: ffff9cb7e3150000 RBX: ffff9cb7e332b9c0 RCX: ffff9cb7e3150400 RDX: 0000000000001f37 RSI: 0000000000000000 RDI: ffff9cb7c0005500 RBP: fffff693448c5400 R08: 0000000080000000 R09: 0000000000000009 R10: 0000000000000000 R11: 0000000000132af0 R12: ffff9cb7c0005500 R13: ffff9cb7e3150000 R14: ffffffffc06990e0 R15: ffff9cb7ea85ea58 FS: 00007ff6b79c2740(0000) GS:ffff9cb8f7ec0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055b426b7d700 CR3: 0000000169c18002 CR4: 00000000007706e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: kfree+0x238/0x250 qla2x00_els_dcmd_sp_free+0x20/0x230 [qla2xxx] ? qla24xx_els_dcmd_iocb+0x607/0x690 [qla2xxx] qla2x00_issue_logo+0x28c/0x2a0 [qla2xxx] ? qla2x00_issue_logo+0x28c/0x2a0 [qla2xxx] ? kernfs_fop_write+0x11e/0x1a0 Remove one of the free call and add check for valid fcport. Also use function qla2x00_free_fcport instead of kfree. Cc: stable@vger.kernel.org Signed-off-by: Saurav Kashyap Signed-off-by: Nilesh Javali Reviewed-by: Himanshu Madhani --- drivers/scsi/qla2xxx/qla_iocb.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c index 892a27afb462..0b41e8a06602 100644 --- a/drivers/scsi/qla2xxx/qla_iocb.c +++ b/drivers/scsi/qla2xxx/qla_iocb.c @@ -2637,7 +2637,8 @@ static void qla2x00_els_dcmd_sp_free(srb_t *sp) { struct srb_iocb *elsio = &sp->u.iocb_cmd; - kfree(sp->fcport); + if (sp->fcport) + qla2x00_free_fcport(sp->fcport); if (elsio->u.els_logo.els_logo_pyld) dma_free_coherent(&sp->vha->hw->pdev->dev, DMA_POOL_SIZE, @@ -2750,6 +2751,7 @@ qla24xx_els_dcmd_iocb(scsi_qla_host_t *vha, int els_opcode, if (!elsio->u.els_logo.els_logo_pyld) { /* ref: INIT */ kref_put(&sp->cmd_kref, qla2x00_sp_release); + qla2x00_free_fcport(fcport); return QLA_FUNCTION_FAILED; } @@ -2784,7 +2786,6 @@ qla24xx_els_dcmd_iocb(scsi_qla_host_t *vha, int els_opcode, fcport->d_id.b.area, fcport->d_id.b.al_pa); wait_for_completion(&elsio->u.els_logo.comp); - qla2x00_free_fcport(fcport); /* ref: INIT */ kref_put(&sp->cmd_kref, qla2x00_sp_release);