https://bugs.kde.org/show_bug.cgi?id=434922
Matteo <mat...@matteopiscitelli.it> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mat...@matteopiscitelli.it
--- Comment #18 from Matteo <mat...@matteopiscitelli.it> ---
Seems to me that bug is in linuxcpuplugin.cpp, row 72:
```
for (QByteArray line = cpuinfo.readLine(); !line.isEmpty(); line =
cpuinfo.readLine()) {
CpuInfo info;
// Processors are divided by empty lines
for (; line != "\n"; line = cpuinfo.readLine()) {
// we are interested in processor number as identifier for
/proc/stat, physical id (the
// cpu the core belongs to) and the number of the core. However
with hyperthreading
// multiple entries will have the same combination of physical id
and core id. So we just
// count up the core number. For mapping temperature both ids are
still needed nonetheless.
const int delim = line.indexOf(":");
const QByteArray field = line.left(delim).trimmed();
const QByteArray value = line.mid(delim + 1).trimmed();
if (field == "processor") {
info.id = value.toInt();
} else if (field == "physical id") {
info.cpu = value.toInt();
} else if (field == "core id") {
info.core = value.toInt();
} else if (field == "cpu MHz") {
info.frequency = value.toDouble();
} else if (field == "siblings") {
info.siblings = value.toInt();
}
}
```
and depends on the fact that inner loop doesn't check for empty line, baseing
on assumption that every cpu block in /proc/cpuinfo is terminated by and empty
line. Problem is that arm cpuinfo terminates with one or more lines that are
not part of any cpu-block, like the following raspi5 example:
```
cat /proc/cpuinfo
processor : 0
BogoMIPS : 108.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp
asimdhp cpuid asimdrdm lrcpc dcpop asimddp
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x4
CPU part : 0xd0b
CPU revision : 1
processor : 1
BogoMIPS : 108.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp
asimdhp cpuid asimdrdm lrcpc dcpop asimddp
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x4
CPU part : 0xd0b
CPU revision : 1
processor : 2
BogoMIPS : 108.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp
asimdhp cpuid asimdrdm lrcpc dcpop asimddp
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x4
CPU part : 0xd0b
CPU revision : 1
processor : 3
BogoMIPS : 108.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp
asimdhp cpuid asimdrdm lrcpc dcpop asimddp
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x4
CPU part : 0xd0b
CPU revision : 1
Hardware : BCM2835
Revision : d04170
Serial : XXXXXXXXXXXXXXXXXXXXXX
Model : Raspberry Pi 5 Model B Rev 1.0
```
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