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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-24 08:46:03 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-24 08:46:03 -0700 |
| commit | cf9610f9116d55c5a66ef9f1faecacabd93a9322 (patch) | |
| tree | 757a3d280760c654767631cab5ad8af2d86d1848 /samples/kmemleak | |
| download | linux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.tar.gz linux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.zip | |
Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlgrafted
Pull pin control updates from Linus Walleij:
"Core changes:
- Use the non-blocking mux_state_try_select() in the generic MUX pin
control back-end
- Free pin maps on pinctrl_generic_to_map() failure in the core
helpers
New hardware pin control:
- Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC
(this is for the low power audio, LPASS = Low Power Audio SubSystem
portions)
- Upboard support on top of the Intel pin controller
- Apple T6030 and T6031 support (just compatible strings)
- Samsung Exynos 8855 SoC
- Mediatek MT6858 SoC
- Rockchip RK3308B and RV1106 SoCs
- Airoha EN7523 and AN7563 SoCs
Improvements:
- Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable
- Qualcomm improvements on top of the Qualcomm PDC (power domain
controller) irqchip improvements from tglx:s tree
- Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups
- The NPCM8xx driver has been put into shape fixing many pin and
group definitions
- Some non-urgent Tegra 264 pin assignments are fixed up
- Some non-urgent fixups to Airoha AN7581 and AN7583 registers and
pin assignments, missing features etc"
* tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits)
dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema
pinctrl: meson: sync some modify from A4
pinctrl: meson: a4: Add input enable pin configuration
pinctrl: realtek: rtd1625: remove unused group name spdif_sel
pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13
dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema
Revert "Merge branch 'ib-rsk7204' into devel"
pinctrl: rockchip: Add RV1106 pinctrl support
dt-bindings: pinctrl: rockchip: Add RV1106 compatible
pinctrl: rockchip: Decode drive strength in the get function
pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable
pinctrl: airoha: add support of an7563 SoC
dt-bindings: pinctrl: airoha: add support of an7563 pin controller
pinctrl: airoha: try to find chip scu node by phandle first
pinctrl: airoha: add support of en7523 SoC
dt-bindings: pinctrl: airoha: add support of en7523 pin controller
pinctrl: airoha: an7583: add support for olt pinmux
pinctrl: airoha: an7583: add support for pon_alt pinmux
pinctrl: airoha: an7583: add support for npu_uart pinmux
dt-bindings: pinctrl: airoha: an7583: add missed features
...
Diffstat (limited to 'samples/kmemleak')
| -rw-r--r-- | samples/kmemleak/Makefile | 3 | ||||
| -rw-r--r-- | samples/kmemleak/kmemleak-test.c | 102 |
2 files changed, 105 insertions, 0 deletions
diff --git a/samples/kmemleak/Makefile b/samples/kmemleak/Makefile new file mode 100644 index 000000000..8a999ab43 --- /dev/null +++ b/samples/kmemleak/Makefile @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0-only + +obj-$(CONFIG_SAMPLE_KMEMLEAK) += kmemleak-test.o diff --git a/samples/kmemleak/kmemleak-test.c b/samples/kmemleak/kmemleak-test.c new file mode 100644 index 000000000..8609812a3 --- /dev/null +++ b/samples/kmemleak/kmemleak-test.c @@ -0,0 +1,102 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * samples/kmemleak/kmemleak-test.c + * + * Copyright (C) 2008 ARM Limited + * Written by Catalin Marinas <catalin.marinas@arm.com> + */ + +#define pr_fmt(fmt) "kmemleak: " fmt + +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/vmalloc.h> +#include <linux/list.h> +#include <linux/percpu.h> +#include <linux/fdtable.h> + +#include <linux/kmemleak.h> + +struct test_node { + long header[25]; + struct list_head list; + long footer[25]; +}; + +static LIST_HEAD(test_list); +static DEFINE_PER_CPU(void *, kmemleak_test_pointer); + +/* + * Some very simple testing. This function needs to be extended for + * proper testing. + */ +static int kmemleak_test_init(void) +{ + struct test_node *elem; + int i; + + pr_info("Kmemleak testing\n"); + + /* make some orphan objects */ + pr_info("kmalloc(32) = 0x%px\n", kmalloc(32, GFP_KERNEL)); + pr_info("kmalloc(32) = 0x%px\n", kmalloc(32, GFP_KERNEL)); + pr_info("kmalloc(1024) = 0x%px\n", kmalloc(1024, GFP_KERNEL)); + pr_info("kmalloc(1024) = 0x%px\n", kmalloc(1024, GFP_KERNEL)); + pr_info("kmalloc(2048) = 0x%px\n", kmalloc(2048, GFP_KERNEL)); + pr_info("kmalloc(2048) = 0x%px\n", kmalloc(2048, GFP_KERNEL)); + pr_info("kmalloc(4096) = 0x%px\n", kmalloc(4096, GFP_KERNEL)); + pr_info("kmalloc(4096) = 0x%px\n", kmalloc(4096, GFP_KERNEL)); +#ifndef CONFIG_MODULES + pr_info("kmem_cache_alloc(files_cachep) = 0x%px\n", + kmem_cache_alloc(files_cachep, GFP_KERNEL)); + pr_info("kmem_cache_alloc(files_cachep) = 0x%px\n", + kmem_cache_alloc(files_cachep, GFP_KERNEL)); +#endif + pr_info("vmalloc(64) = 0x%px\n", vmalloc(64)); + pr_info("vmalloc(64) = 0x%px\n", vmalloc(64)); + pr_info("vmalloc(64) = 0x%px\n", vmalloc(64)); + pr_info("vmalloc(64) = 0x%px\n", vmalloc(64)); + pr_info("vmalloc(64) = 0x%px\n", vmalloc(64)); + + /* + * Add elements to a list. They should only appear as orphan + * after the module is removed. + */ + for (i = 0; i < 10; i++) { + elem = kzalloc(sizeof(*elem), GFP_KERNEL); + pr_info("kzalloc(sizeof(*elem)) = 0x%px\n", elem); + if (!elem) + return -ENOMEM; + INIT_LIST_HEAD(&elem->list); + list_add_tail(&elem->list, &test_list); + } + + for_each_possible_cpu(i) { + per_cpu(kmemleak_test_pointer, i) = kmalloc(129, GFP_KERNEL); + pr_info("kmalloc(129) = 0x%px\n", + per_cpu(kmemleak_test_pointer, i)); + } + + pr_info("__alloc_percpu(64, 4) = 0x%px\n", __alloc_percpu(64, 4)); + + return 0; +} +module_init(kmemleak_test_init); + +static void __exit kmemleak_test_exit(void) +{ + struct test_node *elem, *tmp; + + /* + * Remove the list elements without actually freeing the + * memory. + */ + list_for_each_entry_safe(elem, tmp, &test_list, list) + list_del(&elem->list); +} +module_exit(kmemleak_test_exit); + +MODULE_DESCRIPTION("Sample module to leak memory for kmemleak testing"); +MODULE_LICENSE("GPL"); |
