diff options
| author | Biju Das <biju.das.jz@bp.renesas.com> | 2023-08-15 14:15:57 +0100 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2023-08-18 13:01:41 +0200 |
| commit | f982b9d57e7f834138fc908804fe66f646f2b108 (patch) | |
| tree | 587bb54602d062f9937b6003a2bbfce2cf6d38a1 /fs/ceph | |
| parent | 661efa2284bbc2338da0424e219603f034072c74 (diff) | |
| download | linux-stable-f982b9d57e7f834138fc908804fe66f646f2b108.tar.gz linux-stable-f982b9d57e7f834138fc908804fe66f646f2b108.tar.bz2 linux-stable-f982b9d57e7f834138fc908804fe66f646f2b108.zip | |
pinctrl: renesas: rzv2m: Fix NULL pointer dereference in rzv2m_dt_subnode_to_map()
Fix the below random NULL pointer crash during boot by serializing
pinctrl group and function creation/remove calls in
rzv2m_dt_subnode_to_map() with mutex lock.
Crash logs:
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
rzv2m_dt_subnode_to_map+0x2e4/0x418
rzv2m_dt_node_to_map+0x15c/0x18c
pinctrl_dt_to_map+0x218/0x37c
create_pinctrl+0x70/0x3d8
While at it, add a comment for lock.
Fixes: 92a9b8252576 ("pinctrl: renesas: Add RZ/V2M pin and gpio controller driver")
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/20230815131558.33787-3-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Diffstat (limited to 'fs/ceph')
0 files changed, 0 insertions, 0 deletions