5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Helge Deller deller@gmx.de
commit 9f5ba4b3e1b3c123eeca5d2d09161e8720048b5c upstream.
The lscpu command is broken since commit cab56b51ec0e ("parisc: Fix device names in /proc/iomem") added the PA pathname to all PA devices, includig the CPUs.
lscpu parses /proc/cpuinfo and now believes it found different CPU types since every CPU is listed with an unique identifier (PA pathname).
Fix this problem by simply dropping the PA pathname when listing the CPUs in /proc/cpuinfo. There is no need to show the pathname in this procfs file.
Fixes: cab56b51ec0e ("parisc: Fix device names in /proc/iomem") Signed-off-by: Helge Deller deller@gmx.de Cc: stable@vger.kernel.org # v4.9+ Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/parisc/kernel/processor.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-)
--- a/arch/parisc/kernel/processor.c +++ b/arch/parisc/kernel/processor.c @@ -372,10 +372,18 @@ int show_cpuinfo (struct seq_file *m, void *v) { unsigned long cpu; + char cpu_name[60], *p; + + /* strip PA path from CPU name to not confuse lscpu */ + strlcpy(cpu_name, per_cpu(cpu_data, 0).dev->name, sizeof(cpu_name)); + p = strrchr(cpu_name, '['); + if (p) + *(--p) = 0;
for_each_online_cpu(cpu) { - const struct cpuinfo_parisc *cpuinfo = &per_cpu(cpu_data, cpu); #ifdef CONFIG_SMP + const struct cpuinfo_parisc *cpuinfo = &per_cpu(cpu_data, cpu); + if (0 == cpuinfo->hpa) continue; #endif @@ -420,8 +428,7 @@ show_cpuinfo (struct seq_file *m, void *
seq_printf(m, "model\t\t: %s - %s\n", boot_cpu_data.pdc.sys_model_name, - cpuinfo->dev ? - cpuinfo->dev->name : "Unknown"); + cpu_name);
seq_printf(m, "hversion\t: 0x%08x\n" "sversion\t: 0x%08x\n",