linux-toradex.git/drivers/cpufreq/pcc-cpufreq.c, branch v3.4.2 Linux kernel for Apalis and Colibri modules drivers/cpufreq/pcc-cpufreq.c: avoid NULL pointer dereference 2011-09-15T01:09:38+00:00 Naga Chumbalkar nagananda.chumbalkar@hp.com 2011-09-14T23:22:23+00:00 e71f5cc402ecb42b407ae52add7b173bf1c53daa per_cpu(processors, n) can be NULL, resulting in: Loading CPUFreq modules[ 437.661360] BUG: unable to handle kernel NULL pointer dereference at (null) IP: [<ffffffffa0434314>] pcc_cpufreq_cpu_init+0x74/0x220 [pcc_cpufreq] It's better to avoid the oops by failing the driver, and allowing the system to boot. Signed-off-by: Naga Chumbalkar <nagananda.chumbalkar@hp.com> Cc: Dave Jones <davej@codemonkey.org.uk> Cc: Len Brown <lenb@kernel.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
per_cpu(processors, n) can be NULL, resulting in:

  Loading CPUFreq modules[  437.661360] BUG: unable to handle kernel NULL pointer dereference at (null)
  IP: [<ffffffffa0434314>] pcc_cpufreq_cpu_init+0x74/0x220 [pcc_cpufreq]

It's better to avoid the oops by failing the driver, and allowing the
system to boot.

Signed-off-by: Naga Chumbalkar <nagananda.chumbalkar@hp.com>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: Len Brown <lenb@kernel.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19T22:51:07+00:00 Dave Jones davej@redhat.com 2011-05-19T22:51:07+00:00 bb0a56ecc4ba2a3db1b6ea6949c309886e3447d3 Signed-off-by: Dave Jones <davej@redhat.com> 
Signed-off-by: Dave Jones <davej@redhat.com>