File errinjct-sanitize-devspec-output-of-a-newline-i... of Package powerpc-utils

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File errinjct-sanitize-devspec-output-of-a-newline-if-one.patch of Package powerpc-utils (Revision 7d3a97554eaff8298e68a7cb4db6a995)

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From d8408b429ff022ff446ac2607bc26eaf60627658 Mon Sep 17 00:00:00 2001
From: Tyrel Datwyler <tyreld@linux.ibm.com>
Date: Mon, 10 Jan 2022 16:55:58 -0500
Subject: [PATCH] errinjct: sanitize devspec output of a newline if one is
 present

References: bsc#1194579 ltc#195746
Upstream: accepted (expected 1.3.10)
Git-commit: d8408b429ff022ff446ac2607bc26eaf60627658

Linux Kernel Commit: 14c19b2a40b6 ("PCI/sysfs: Add 'devspec' newline")
introduced a newline character at the end of the devspec result which
historically did not have one before. When a newline is present the
errinjct utility constructs an invalid pathname for a PCI devices /reg
property in the device tree. As a result the tool fails to provide a
valid config address to RTAS resulting in a (-3) Parameter Error.

errinjct eeh -v -f 6 -s net/eth1 -a 0xe0800000 -m 0xff800000
errinjct: Could not open file /proc/device-tree//pci@800000020000154/ethernet@0,1
/reg, No such file or directory

Injecting an ioa-bus-error with the following data:

BUS ADDR:               e0800000
ADDR MASK:              ff800000
CONFIG ADDR:            1
PHB UNIT_ID:            800000020000154
FUNCTION:               6
Store to PCI Memory Address Space - inject an Address Parity Error
errinjct: RTAS error injection failed!

errinjct: RTAS: ioa-bus-error: Argument error (-3)

Fix this issue by nul terminating the devspec output string at the newline
if present.

Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
---
 src/errinjct/ioa_bus_error.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/errinjct/ioa_bus_error.c b/src/errinjct/ioa_bus_error.c
index 281b56b..fc38037 100644
--- a/src/errinjct/ioa_bus_error.c
+++ b/src/errinjct/ioa_bus_error.c
@@ -232,7 +232,7 @@ static int parse_sysfsname(void)
 {
 	char path[BUFSZ];
 	char *devspec;
-	char *at;
+	char *at, *nl;
 	uint32_t addr;
 	uint64_t phb_id;
 
@@ -247,6 +247,14 @@ static int parse_sysfsname(void)
 	if (!devspec)
 		return 1;
 
+	/* Linux Kernel Commit: 14c19b2a40b6 ("PCI/sysfs: Add 'devspec' newline")
+	 * began reporting the devspec value for pci devices with a trailing newline.
+	 * Remove the newline if present to ensure our built pathname for obtaining
+	 * the config address is valid. */
+	nl = strchr(devspec, '\n');
+	if (nl)
+		*nl = '\0';
+
 	/* Now we parse something like /pci@400000000112/pci@2/ethernet@1 for
 	 * BUID HI =4000 and LOW 00000112 */
 	at = strchr(devspec, '@');
-- 
2.34.1

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File errinjct-sanitize-devspec-output-of-a-newline-if-one.patch of Package powerpc-utils (Revision 7d3a97554eaff8298e68a7cb4db6a995)

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