[PATCH v3] powerpc: msi: mark bitmap with kmemleak_not_leak()

Denis Kirjanov kda at linux-powerpc.org
Fri Oct 2 18:50:21 AEST 2015


On 9/17/15, Catalin Marinas <catalin.marinas at arm.com> wrote:
> On Wed, Sep 16, 2015 at 10:26:14PM +0300, Denis Kirjanov wrote:
>> During the MSI bitmap test on boot kmemleak spews the following trace:
>>
>> unreferenced object 0xc00000016e86c900 (size 64):
>>     comm "swapper/0", pid 1, jiffies 4294893173 (age 518.024s)
>>     hex dump (first 32 bytes):
>> 	00 00 01 ff 7f ff 7f 37 00 00 00 00 00 00 00 00
>> 	.......7........
>> 	ff ff ff ff ff ff ff ff 01 ff ff ff ff
>> 	ff ff ff
>> 	................
>> 	backtrace:
>> 	[<c00000000003eebc>] .zalloc_maybe_bootmem+0x3c/0x380
>> 	[<c000000000042d6c>] .msi_bitmap_alloc+0x3c/0xb0
>> 	[<c000000000a9aff8>] .msi_bitmap_selftest+0x30/0x2b4
>> 	[<c0000000000090f4>] .do_one_initcall+0xd4/0x270
>> 	[<c000000000a8e250>] .kernel_init_freeable+0x1a0/0x280
>> 	[<c000000000009b5c>] .kernel_init+0x1c/0x120
>> 	[<c000000000007fbc>] .ret_from_kernel_thread+0x58/0x9c
>>
>> Added a flag to msi_bitmap for tracking allocations
>> from slab and memblock so we can properly free/handle
>> memory in msi_bitmap_free().
>>
>> Signed-off-by: Denis Kirjanov <kda at linux-powerpc.org>
>
> Reviewed-by: Catalin Marinas <catalin.marinas at arm.com>
>
Hi Michael,
could you please apply the patch to fixes branch as well?

Thanks!


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