diff options
| author | Joel Granados <j.granados@samsung.com> | 2023-06-16 10:59:15 +0200 |
|---|---|---|
| committer | Luis Chamberlain <mcgrof@kernel.org> | 2023-06-18 02:32:53 -0700 |
| commit | 37e9981e33e4d308c323a56bb908aa54c8f041a8 (patch) | |
| tree | 71817db5bc6a87e1636507462a11647e7034265a /drivers/parport/procfs.c | |
| parent | 28898e260a34e840f86ca80bf0c7657d76ad3f80 (diff) | |
parport: plug a sysctl register leak
parport registers two sysctl directories in the parport_proc_register
function but only one of them was getting unregistered in
parport_proc_unregister. Keep track of both sysctl table headers and
handle them together when (un)registering.
Signed-off-by: Joel Granados <j.granados@samsung.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Diffstat (limited to 'drivers/parport/procfs.c')
| -rw-r--r-- | drivers/parport/procfs.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/drivers/parport/procfs.c b/drivers/parport/procfs.c index cbb1fb5127ce..0f2d2e1ee28e 100644 --- a/drivers/parport/procfs.c +++ b/drivers/parport/procfs.c @@ -257,14 +257,16 @@ PARPORT_MAX_SPINTIME_VALUE; struct parport_sysctl_table { - struct ctl_table_header *sysctl_header; + struct ctl_table_header *port_header; + struct ctl_table_header *devices_header; struct ctl_table vars[12]; struct ctl_table device_dir[2]; }; static const struct parport_sysctl_table parport_sysctl_template = { - .sysctl_header = NULL, - { + .port_header = NULL, + .devices_header = NULL, + { { .procname = "spintime", .data = NULL, @@ -429,7 +431,6 @@ parport_default_sysctl_table = { int parport_proc_register(struct parport *port) { struct parport_sysctl_table *t; - struct ctl_table_header *devices_h; char *tmp_dir_path; size_t tmp_path_len, port_name_len; int bytes_written, i, err = 0; @@ -464,8 +465,8 @@ int parport_proc_register(struct parport *port) err = -ENOENT; goto exit_free_tmp_dir_path; } - devices_h = register_sysctl(tmp_dir_path, t->device_dir); - if (devices_h == NULL) { + t->devices_header = register_sysctl(tmp_dir_path, t->device_dir); + if (t->devices_header == NULL) { err = -ENOENT; goto exit_free_tmp_dir_path; } @@ -478,8 +479,8 @@ int parport_proc_register(struct parport *port) goto unregister_devices_h; } - t->sysctl_header = register_sysctl(tmp_dir_path, t->vars); - if (t->sysctl_header == NULL) { + t->port_header = register_sysctl(tmp_dir_path, t->vars); + if (t->port_header == NULL) { err = -ENOENT; goto unregister_devices_h; } @@ -490,7 +491,7 @@ int parport_proc_register(struct parport *port) return 0; unregister_devices_h: - unregister_sysctl_table(devices_h); + unregister_sysctl_table(t->devices_header); exit_free_tmp_dir_path: kfree(tmp_dir_path); @@ -505,7 +506,8 @@ int parport_proc_unregister(struct parport *port) if (port->sysctl_table) { struct parport_sysctl_table *t = port->sysctl_table; port->sysctl_table = NULL; - unregister_sysctl_table(t->sysctl_header); + unregister_sysctl_table(t->devices_header); + unregister_sysctl_table(t->port_header); kfree(t); } return 0; |