linux-kernel - [PATCH 4.19 16/48] bnxt_en: Improve AER slot reset.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20200513094355.306462715@linuxfoundation.org>
Date:   Wed, 13 May 2020 11:44:42 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Michael Chan <michael.chan@...adcom.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 4.19 16/48] bnxt_en: Improve AER slot reset.

From: Michael Chan <michael.chan@...adcom.com>

[ Upstream commit bae361c54fb6ac6eba3b4762f49ce14beb73ef13 ]

Improve the slot reset sequence by disabling the device to prevent bad
DMAs if slot reset fails.  Return the proper result instead of always
PCI_ERS_RESULT_RECOVERED to the caller.

Fixes: 6316ea6db93d ("bnxt_en: Enable AER support.")
Signed-off-by: Michael Chan <michael.chan@...adcom.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c |    9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -9300,8 +9300,11 @@ static pci_ers_result_t bnxt_io_slot_res
 		}
 	}
 
-	if (result != PCI_ERS_RESULT_RECOVERED && netif_running(netdev))
-		dev_close(netdev);
+	if (result != PCI_ERS_RESULT_RECOVERED) {
+		if (netif_running(netdev))
+			dev_close(netdev);
+		pci_disable_device(pdev);
+	}
 
 	rtnl_unlock();
 
@@ -9312,7 +9315,7 @@ static pci_ers_result_t bnxt_io_slot_res
 			 err); /* non-fatal, continue */
 	}
 
-	return PCI_ERS_RESULT_RECOVERED;
+	return result;
 }
 
 /**