Hi guys, On next-20210406, I enabled CONFIG_DEBUG_KMEMLEAK and CONFIG_DEBUG_TEST_DRIVER_REMOVE for my arm64 system, and see this:
root@debian:/home/john# more /sys/kernel/debug/kmemleak unreferenced object 0xffff202803c11f00 (size 128): comm "swapper/0", pid 1, jiffies 4294894325 (age 337.524s) hex dump (first 32 bytes): 00 00 00 00 02 00 00 00 08 1f c1 03 28 20 ff ff............( .. 08 1f c1 03 28 20 ff ff 00 00 00 00 00 00 00 00....( .......... backtrace: [<00000000670a0938>] slab_post_alloc_hook+0x9c/0x2f8 [<00000000a3f47b39>] kmem_cache_alloc+0x198/0x2a8 [<000000002bdba864>] acpi_os_create_semaphore+0x54/0xe0 [<00000000bcd513fe>] acpi_ev_install_space_handler+0x24c/0x300 [<0000000002e116e2>] acpi_install_address_space_handler+0x64/0xb0 [<00000000ba00abc5>] i2c_acpi_install_space_handler+0xd4/0x138 [<000000008da42058>] i2c_register_adapter+0x368/0x910 [<00000000c03f7142>] i2c_add_adapter+0x9c/0x100 [<0000000000ba2fcf>] i2c_add_numbered_adapter+0x44/0x58 [<000000007df22d67>] i2c_dw_probe_master+0x68c/0x900 [<00000000682dfc98>] dw_i2c_plat_probe+0x460/0x640 [<00000000ad2dd3ee>] platform_probe+0x8c/0x108 [<00000000dd183e3f>] really_probe+0x190/0x670 [<0000000066017341>] driver_probe_device+0x8c/0xf8 [<00000000c441e843>] device_driver_attach+0x9c/0xa8 [<00000000f91dc709>] __driver_attach+0x88/0x138 unreferenced object 0xffff00280452c100 (size 128): comm "swapper/0", pid 1, jiffies 4294894558 (age 336.604s) hex dump (first 32 bytes): 00 00 00 00 02 00 00 00 08 c1 52 04 28 00 ff ff..........R.(... 08 c1 52 04 28 00 ff ff 00 00 00 00 00 00 00 00..R.(........... backtrace: [<00000000670a0938>] slab_post_alloc_hook+0x9c/0x2f8 [<00000000a3f47b39>] kmem_cache_alloc+0x198/0x2a8 [<000000002bdba864>] acpi_os_create_semaphore+0x54/0xe0 [<00000000bcd513fe>] acpi_ev_install_space_handler+0x24c/0x300 [<0000000002e116e2>] acpi_install_address_space_handler+0x64/0xb0 [<00000000988d4f61>] acpi_gpiochip_add+0x20c/0x4a0 [<0000000073d4faab>] gpiochip_add_data_with_key+0xd10/0x1680 [<000000001d50b98a>] devm_gpiochip_add_data_with_key+0x30/0x78 [<00000000fc3e7eaf>] dwapb_gpio_probe+0x828/0xb28 [<00000000ad2dd3ee>] platform_probe+0x8c/0x108 [<00000000dd183e3f>] really_probe+0x190/0x670 [<0000000066017341>] driver_probe_device+0x8c/0xf8 [<00000000c441e843>] device_driver_attach+0x9c/0xa8 [<00000000f91dc709>] __driver_attach+0x88/0x138 [<00000000d330caed>] bus_for_each_dev+0xec/0x160 [<00000000eebc5f04>] driver_attach+0x34/0x48 root@debian:/home/john# Thanks, John
