diff options
| author | Biju Das <biju.das.jz@bp.renesas.com> | 2023-08-15 14:15:56 +0100 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2023-08-18 13:01:41 +0200 |
| commit | 661efa2284bbc2338da0424e219603f034072c74 (patch) | |
| tree | b8b9ac953b0ae822a6267bd5151ee2d13c34c4e1 /scripts/gdb/linux/utils.py | |
| parent | bfc374a145ae133613e05b9b89be561f169cb58d (diff) | |
pinctrl: renesas: rzg2l: Fix NULL pointer dereference in rzg2l_dt_subnode_to_map()
Fix the below random NULL pointer crash during boot by serializing
pinctrl group and function creation/remove calls in
rzg2l_dt_subnode_to_map() with mutex lock.
Crash log:
pc : __pi_strcmp+0x20/0x140
lr : pinmux_func_name_to_selector+0x68/0xa4
Call trace:
__pi_strcmp+0x20/0x140
pinmux_generic_add_function+0x34/0xcc
rzg2l_dt_subnode_to_map+0x314/0x44c
rzg2l_dt_node_to_map+0x164/0x194
pinctrl_dt_to_map+0x218/0x37c
create_pinctrl+0x70/0x3d8
While at it, add comments for bitmap_lock and lock.
Fixes: c4c4637eb57f ("pinctrl: renesas: Add RZ/G2L pin and gpio controller driver")
Tested-by: Chris Paterson <Chris.Paterson2@renesas.com>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230815131558.33787-2-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Diffstat (limited to 'scripts/gdb/linux/utils.py')
0 files changed, 0 insertions, 0 deletions