#!/bin/awk -f # gen-insn-x86-dat.awk: script to convert data for the insn-x86 test # Copyright (c) 2015, Intel Corporation. # # This program is free software; you can redistribute it and/or modify it # under the terms and conditions of the GNU General Public License, # version 2, as published by the Free Software Foundation. # # This program is distributed in the hope it will be useful, but WITHOUT # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for # more details. BEGIN { print "/*" print " * Generated by gen-insn-x86-dat.sh and gen-insn-x86-dat.awk" print " * from insn-x86-dat-src.c for inclusion by insn-x86.c" print " * Do not change this code." print "*/\n" op = "" branch = "" rel = 0 going = 0 } / Start here / { going = 1 } / Stop here / { going = 0 } /^\s*[0-9a-fA-F]+\:/ { if (going) { colon_pos = index($0, ":") useful_line = substr($0, colon_pos + 1) first_pos = match(useful_line, "[0-9a-fA-F]") useful_line = substr(useful_line, first_pos) gsub("\t", "\\t", useful_line) printf "{{" len = 0 for (i = 2; i <= NF; i++) { if (match($i, "^[0-9a-fA-F][0-9a-fA-F]$")) { printf "0x%s, ", $i len += 1 } else { break } } printf "}, %d, %s, \"%s\", \"%s\",", len, rel, op, branch printf "\n\"%s\",},\n", useful_line op = "" branch = "" rel = 0 } } / Expecting: / { expecting_str = " Expecting: " expecting_len = length(expecting_str) expecting_pos = index($0, expecting_str) useful_line = substr($0, expecting_pos + expecting_len) for (i = 1; i <= NF; i++) { if ($i == "Expecting:") { i++ op = $i i++ branch = $i i++ rel = $i break } } } a>logtreecommitdiff
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authorBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
committerBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
commit030305d69fc6963c16003f50d7e8d74b02d0a143 (patch)
tree363a4e34d199178769b7e7eeb26ea2620a55847b /net/sched/cls_fw.c
parent4d191b1b63c209e37bf27938ef365244d3c41084 (diff)
PCI/ASPM: Handle PCI-to-PCIe bridges as roots of PCIe hierarchies
In a struct pcie_link_state, link->root points to the pcie_link_state of the root of the PCIe hierarchy. For the topmost link, this points to itself (link->root = link). For others, we copy the pointer from the parent (link->root = link->parent->root). Previously we recognized that Root Ports originated PCIe hierarchies, but we treated PCI/PCI-X to PCIe Bridges as being in the middle of the hierarchy, and when we tried to copy the pointer from link->parent->root, there was no parent, and we dereferenced a NULL pointer: BUG: unable to handle kernel NULL pointer dereference at 0000000000000090 IP: [<ffffffff9e424350>] pcie_aspm_init_link_state+0x170/0x820 Recognize that PCI/PCI-X to PCIe Bridges originate PCIe hierarchies just like Root Ports do, so link->root for these devices should also point to itself. Fixes: 51ebfc92b72b ("PCI: Enumerate switches below PCI-to-PCIe bridges") Link: https://bugzilla.kernel.org/show_bug.cgi?id=193411 Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1022181 Tested-by: lists@ssl-mail.com Tested-by: Jayachandran C. <jnair@caviumnetworks.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: stable@vger.kernel.org # v4.2+
Diffstat (limited to 'net/sched/cls_fw.c')