| Message ID | 20240918035327.9710-1-hejunhao3@huawei.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | coresight: Fixes device's owner field for registered using coresight_init_driver() | expand |
On 18/09/2024 04:53, Junhao He wrote: > The coresight_init_driver() of the coresight-core module is called from > the sub coresgiht device (such as tmc/stm/funnle/...) module. It calls > amba_driver_register() and Platform_driver_register(), which are macro > functions that use the coresight-core's module to initialize the caller's > owner field. Therefore, when the sub coresight device calls > coresight_init_driver(), an incorrect THIS_MODULE value is captured. > > The sub coesgiht modules can be removed while their callbacks are > running, resulting in a general protection failure. > > Add module parameter to coresight_init_driver() so can be called > with the module of the callback. > > Fixes: 075b7cd7ad7d ("coresight: Add helpers registering/removing both AMBA and platform drivers") > Signed-off-by: Junhao He <hejunhao3@huawei.com> Thanks for the fix, looks good to me. I will queue this for v6.13 Suzuki > --- > drivers/hwtracing/coresight/coresight-catu.c | 2 +- > drivers/hwtracing/coresight/coresight-core.c | 6 +++--- > drivers/hwtracing/coresight/coresight-cpu-debug.c | 3 ++- > drivers/hwtracing/coresight/coresight-funnel.c | 3 ++- > drivers/hwtracing/coresight/coresight-replicator.c | 3 ++- > drivers/hwtracing/coresight/coresight-stm.c | 2 +- > drivers/hwtracing/coresight/coresight-tmc-core.c | 2 +- > drivers/hwtracing/coresight/coresight-tpiu.c | 2 +- > include/linux/coresight.h | 2 +- > 9 files changed, 14 insertions(+), 11 deletions(-) > > diff --git a/drivers/hwtracing/coresight/coresight-catu.c b/drivers/hwtracing/coresight/coresight-catu.c > index bfea880d6dfb..337668f9cfd4 100644 > --- a/drivers/hwtracing/coresight/coresight-catu.c > +++ b/drivers/hwtracing/coresight/coresight-catu.c > @@ -702,7 +702,7 @@ static int __init catu_init(void) > { > int ret; > > - ret = coresight_init_driver("catu", &catu_driver, &catu_platform_driver); > + ret = coresight_init_driver("catu", &catu_driver, &catu_platform_driver, THIS_MODULE); > tmc_etr_set_catu_ops(&etr_catu_buf_ops); > return ret; > } > diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c > index 9fc6f6b863e0..c546a417836c 100644 > --- a/drivers/hwtracing/coresight/coresight-core.c > +++ b/drivers/hwtracing/coresight/coresight-core.c > @@ -1399,17 +1399,17 @@ module_init(coresight_init); > module_exit(coresight_exit); > > int coresight_init_driver(const char *drv, struct amba_driver *amba_drv, > - struct platform_driver *pdev_drv) > + struct platform_driver *pdev_drv, struct module *owner) > { > int ret; > > - ret = amba_driver_register(amba_drv); > + ret = __amba_driver_register(amba_drv, owner); > if (ret) { > pr_err("%s: error registering AMBA driver\n", drv); > return ret; > } > > - ret = platform_driver_register(pdev_drv); > + ret = __platform_driver_register(pdev_drv, owner); > if (!ret) > return 0; > > diff --git a/drivers/hwtracing/coresight/coresight-cpu-debug.c b/drivers/hwtracing/coresight/coresight-cpu-debug.c > index 75962dae9aa1..cc599c5ef4b2 100644 > --- a/drivers/hwtracing/coresight/coresight-cpu-debug.c > +++ b/drivers/hwtracing/coresight/coresight-cpu-debug.c > @@ -774,7 +774,8 @@ static struct platform_driver debug_platform_driver = { > > static int __init debug_init(void) > { > - return coresight_init_driver("debug", &debug_driver, &debug_platform_driver); > + return coresight_init_driver("debug", &debug_driver, &debug_platform_driver, > + THIS_MODULE); > } > > static void __exit debug_exit(void) > diff --git a/drivers/hwtracing/coresight/coresight-funnel.c b/drivers/hwtracing/coresight/coresight-funnel.c > index 5a819c8970fb..8f451b051ddc 100644 > --- a/drivers/hwtracing/coresight/coresight-funnel.c > +++ b/drivers/hwtracing/coresight/coresight-funnel.c > @@ -433,7 +433,8 @@ static struct amba_driver dynamic_funnel_driver = { > > static int __init funnel_init(void) > { > - return coresight_init_driver("funnel", &dynamic_funnel_driver, &funnel_driver); > + return coresight_init_driver("funnel", &dynamic_funnel_driver, &funnel_driver, > + THIS_MODULE); > } > > static void __exit funnel_exit(void) > diff --git a/drivers/hwtracing/coresight/coresight-replicator.c b/drivers/hwtracing/coresight/coresight-replicator.c > index 3e55be9c8418..f7607c72857c 100644 > --- a/drivers/hwtracing/coresight/coresight-replicator.c > +++ b/drivers/hwtracing/coresight/coresight-replicator.c > @@ -438,7 +438,8 @@ static struct amba_driver dynamic_replicator_driver = { > > static int __init replicator_init(void) > { > - return coresight_init_driver("replicator", &dynamic_replicator_driver, &replicator_driver); > + return coresight_init_driver("replicator", &dynamic_replicator_driver, &replicator_driver, > + THIS_MODULE); > } > > static void __exit replicator_exit(void) > diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c > index 117dbb484543..403eea8f95d4 100644 > --- a/drivers/hwtracing/coresight/coresight-stm.c > +++ b/drivers/hwtracing/coresight/coresight-stm.c > @@ -1046,7 +1046,7 @@ static struct platform_driver stm_platform_driver = { > > static int __init stm_init(void) > { > - return coresight_init_driver("stm", &stm_driver, &stm_platform_driver); > + return coresight_init_driver("stm", &stm_driver, &stm_platform_driver, THIS_MODULE); > } > > static void __exit stm_exit(void) > diff --git a/drivers/hwtracing/coresight/coresight-tmc-core.c b/drivers/hwtracing/coresight/coresight-tmc-core.c > index b54562f392f3..e31e36635394 100644 > --- a/drivers/hwtracing/coresight/coresight-tmc-core.c > +++ b/drivers/hwtracing/coresight/coresight-tmc-core.c > @@ -742,7 +742,7 @@ static struct platform_driver tmc_platform_driver = { > > static int __init tmc_init(void) > { > - return coresight_init_driver("tmc", &tmc_driver, &tmc_platform_driver); > + return coresight_init_driver("tmc", &tmc_driver, &tmc_platform_driver, THIS_MODULE); > } > > static void __exit tmc_exit(void) > diff --git a/drivers/hwtracing/coresight/coresight-tpiu.c b/drivers/hwtracing/coresight/coresight-tpiu.c > index b048e146fbb1..f9ecd05cbe5c 100644 > --- a/drivers/hwtracing/coresight/coresight-tpiu.c > +++ b/drivers/hwtracing/coresight/coresight-tpiu.c > @@ -318,7 +318,7 @@ static struct platform_driver tpiu_platform_driver = { > > static int __init tpiu_init(void) > { > - return coresight_init_driver("tpiu", &tpiu_driver, &tpiu_platform_driver); > + return coresight_init_driver("tpiu", &tpiu_driver, &tpiu_platform_driver, THIS_MODULE); > } > > static void __exit tpiu_exit(void) > diff --git a/include/linux/coresight.h b/include/linux/coresight.h > index f09ace92176e..e6c26952ddc2 100644 > --- a/include/linux/coresight.h > +++ b/include/linux/coresight.h > @@ -660,7 +660,7 @@ coresight_find_output_type(struct coresight_platform_data *pdata, > union coresight_dev_subtype subtype); > > int coresight_init_driver(const char *drv, struct amba_driver *amba_drv, > - struct platform_driver *pdev_drv); > + struct platform_driver *pdev_drv, struct module *owner); > > void coresight_remove_driver(struct amba_driver *amba_drv, > struct platform_driver *pdev_drv);
diff --git a/drivers/hwtracing/coresight/coresight-catu.c b/drivers/hwtracing/coresight/coresight-catu.c index bfea880d6dfb..337668f9cfd4 100644 --- a/drivers/hwtracing/coresight/coresight-catu.c +++ b/drivers/hwtracing/coresight/coresight-catu.c @@ -702,7 +702,7 @@ static int __init catu_init(void) { int ret; - ret = coresight_init_driver("catu", &catu_driver, &catu_platform_driver); + ret = coresight_init_driver("catu", &catu_driver, &catu_platform_driver, THIS_MODULE); tmc_etr_set_catu_ops(&etr_catu_buf_ops); return ret; } diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c index 9fc6f6b863e0..c546a417836c 100644 --- a/drivers/hwtracing/coresight/coresight-core.c +++ b/drivers/hwtracing/coresight/coresight-core.c @@ -1399,17 +1399,17 @@ module_init(coresight_init); module_exit(coresight_exit); int coresight_init_driver(const char *drv, struct amba_driver *amba_drv, - struct platform_driver *pdev_drv) + struct platform_driver *pdev_drv, struct module *owner) { int ret; - ret = amba_driver_register(amba_drv); + ret = __amba_driver_register(amba_drv, owner); if (ret) { pr_err("%s: error registering AMBA driver\n", drv); return ret; } - ret = platform_driver_register(pdev_drv); + ret = __platform_driver_register(pdev_drv, owner); if (!ret) return 0; diff --git a/drivers/hwtracing/coresight/coresight-cpu-debug.c b/drivers/hwtracing/coresight/coresight-cpu-debug.c index 75962dae9aa1..cc599c5ef4b2 100644 --- a/drivers/hwtracing/coresight/coresight-cpu-debug.c +++ b/drivers/hwtracing/coresight/coresight-cpu-debug.c @@ -774,7 +774,8 @@ static struct platform_driver debug_platform_driver = { static int __init debug_init(void) { - return coresight_init_driver("debug", &debug_driver, &debug_platform_driver); + return coresight_init_driver("debug", &debug_driver, &debug_platform_driver, + THIS_MODULE); } static void __exit debug_exit(void) diff --git a/drivers/hwtracing/coresight/coresight-funnel.c b/drivers/hwtracing/coresight/coresight-funnel.c index 5a819c8970fb..8f451b051ddc 100644 --- a/drivers/hwtracing/coresight/coresight-funnel.c +++ b/drivers/hwtracing/coresight/coresight-funnel.c @@ -433,7 +433,8 @@ static struct amba_driver dynamic_funnel_driver = { static int __init funnel_init(void) { - return coresight_init_driver("funnel", &dynamic_funnel_driver, &funnel_driver); + return coresight_init_driver("funnel", &dynamic_funnel_driver, &funnel_driver, + THIS_MODULE); } static void __exit funnel_exit(void) diff --git a/drivers/hwtracing/coresight/coresight-replicator.c b/drivers/hwtracing/coresight/coresight-replicator.c index 3e55be9c8418..f7607c72857c 100644 --- a/drivers/hwtracing/coresight/coresight-replicator.c +++ b/drivers/hwtracing/coresight/coresight-replicator.c @@ -438,7 +438,8 @@ static struct amba_driver dynamic_replicator_driver = { static int __init replicator_init(void) { - return coresight_init_driver("replicator", &dynamic_replicator_driver, &replicator_driver); + return coresight_init_driver("replicator", &dynamic_replicator_driver, &replicator_driver, + THIS_MODULE); } static void __exit replicator_exit(void) diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c index 117dbb484543..403eea8f95d4 100644 --- a/drivers/hwtracing/coresight/coresight-stm.c +++ b/drivers/hwtracing/coresight/coresight-stm.c @@ -1046,7 +1046,7 @@ static struct platform_driver stm_platform_driver = { static int __init stm_init(void) { - return coresight_init_driver("stm", &stm_driver, &stm_platform_driver); + return coresight_init_driver("stm", &stm_driver, &stm_platform_driver, THIS_MODULE); } static void __exit stm_exit(void) diff --git a/drivers/hwtracing/coresight/coresight-tmc-core.c b/drivers/hwtracing/coresight/coresight-tmc-core.c index b54562f392f3..e31e36635394 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-core.c +++ b/drivers/hwtracing/coresight/coresight-tmc-core.c @@ -742,7 +742,7 @@ static struct platform_driver tmc_platform_driver = { static int __init tmc_init(void) { - return coresight_init_driver("tmc", &tmc_driver, &tmc_platform_driver); + return coresight_init_driver("tmc", &tmc_driver, &tmc_platform_driver, THIS_MODULE); } static void __exit tmc_exit(void) diff --git a/drivers/hwtracing/coresight/coresight-tpiu.c b/drivers/hwtracing/coresight/coresight-tpiu.c index b048e146fbb1..f9ecd05cbe5c 100644 --- a/drivers/hwtracing/coresight/coresight-tpiu.c +++ b/drivers/hwtracing/coresight/coresight-tpiu.c @@ -318,7 +318,7 @@ static struct platform_driver tpiu_platform_driver = { static int __init tpiu_init(void) { - return coresight_init_driver("tpiu", &tpiu_driver, &tpiu_platform_driver); + return coresight_init_driver("tpiu", &tpiu_driver, &tpiu_platform_driver, THIS_MODULE); } static void __exit tpiu_exit(void) diff --git a/include/linux/coresight.h b/include/linux/coresight.h index f09ace92176e..e6c26952ddc2 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -660,7 +660,7 @@ coresight_find_output_type(struct coresight_platform_data *pdata, union coresight_dev_subtype subtype); int coresight_init_driver(const char *drv, struct amba_driver *amba_drv, - struct platform_driver *pdev_drv); + struct platform_driver *pdev_drv, struct module *owner); void coresight_remove_driver(struct amba_driver *amba_drv, struct platform_driver *pdev_drv);
The coresight_init_driver() of the coresight-core module is called from the sub coresgiht device (such as tmc/stm/funnle/...) module. It calls amba_driver_register() and Platform_driver_register(), which are macro functions that use the coresight-core's module to initialize the caller's owner field. Therefore, when the sub coresight device calls coresight_init_driver(), an incorrect THIS_MODULE value is captured. The sub coesgiht modules can be removed while their callbacks are running, resulting in a general protection failure. Add module parameter to coresight_init_driver() so can be called with the module of the callback. Fixes: 075b7cd7ad7d ("coresight: Add helpers registering/removing both AMBA and platform drivers") Signed-off-by: Junhao He <hejunhao3@huawei.com> --- drivers/hwtracing/coresight/coresight-catu.c | 2 +- drivers/hwtracing/coresight/coresight-core.c | 6 +++--- drivers/hwtracing/coresight/coresight-cpu-debug.c | 3 ++- drivers/hwtracing/coresight/coresight-funnel.c | 3 ++- drivers/hwtracing/coresight/coresight-replicator.c | 3 ++- drivers/hwtracing/coresight/coresight-stm.c | 2 +- drivers/hwtracing/coresight/coresight-tmc-core.c | 2 +- drivers/hwtracing/coresight/coresight-tpiu.c | 2 +- include/linux/coresight.h | 2 +- 9 files changed, 14 insertions(+), 11 deletions(-)