On Thu, Dec 06, 2018 at 11:07:51AM -0500, Qian Cai wrote: > unreferenced object 0xffff808ec6dc5a80 (size 128): > comm "swapper/0", pid 1, jiffies 4294938063 (age 2560.530s) > hex dump (first 32 bytes): > ff ff ff ff 00 00 00 00 6b 6b 6b 6b 6b 6b 6b 6b ........kkkkkkkk > 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > backtrace: > [<00000000476dcf8c>] kmem_cache_alloc_trace+0x430/0x500 > [<000000004f708d37>] platform_device_register_full+0xbc/0x1e8 > [<000000006c2a7ec7>] acpi_create_platform_device+0x370/0x450 > [<00000000ef135642>] acpi_default_enumeration+0x34/0x78 > [<000000003bd9a052>] acpi_bus_attach+0x2dc/0x3e0 > [<000000003cf4f7f2>] acpi_bus_attach+0x108/0x3e0 > [<000000003cf4f7f2>] acpi_bus_attach+0x108/0x3e0 > [<000000002968643e>] acpi_bus_scan+0xb0/0x110 > [<0000000010dd0bd7>] acpi_scan_init+0x1a8/0x410 > [<00000000965b3c5a>] acpi_init+0x408/0x49c > [<00000000ed4b9fe2>] do_one_initcall+0x178/0x7f4 > [<00000000a5ac5a74>] kernel_init_freeable+0x9d4/0xa9c > [<0000000070ea6c15>] kernel_init+0x18/0x138 > [<00000000fb8fff06>] ret_from_fork+0x10/0x1c > [<0000000041273a0d>] 0xffffffffffffffff > > Then, faddr2line pointed out this line, > > /* > * This memory isn't freed when the device is put, > * I don't have a nice idea for that though. Conceptually > * dma_mask in struct device should not be a pointer. > * See http://thread.gmane.org/gmane.linux.kernel.pci/9081 > */ > pdev->dev.dma_mask = > kmalloc(sizeof(*pdev->dev.dma_mask), GFP_KERNEL); > > Since this leak has been existed for more than 8-year now and it does not > reference other part of the memory, let kmemleak ignore it, so users don't > need to waste time reporting this in the future. > > Signed-off-by: Qian Cai <c...@gmx.us>
Acked-by: Catalin Marinas <catalin.mari...@arm.com>
