[PATCH v3 0/3] fix parsing of reboot= cmdline

[Matteo Croce]

From: Matteo Croce <mcroce@xxxxxxxxxxxxx>

The parsing of the reboot= cmdline has two major errors:
- a missing bound check can crash the system on reboot
- parsing of the cpu number only works if specified last

Fix both, along with a small code refactor.

v2->v3:
Revert the offending commit first, then fix the other bug.
CC stable
v1->v2:
As Petr suggested, don't force base 10 in simple_strtoul(),
so hex values are accepted as well.

Matteo Croce (3):
  Revert "kernel/reboot.c: convert simple_strtoul to kstrtoint"
  reboot: fix overflow parsing reboot cpu number
  reboot: refactor and comment the cpu selection code

 kernel/reboot.c | 30 +++++++++++++++++-------------
 1 file changed, 17 insertions(+), 13 deletions(-)

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2.28.0