Hi Catalin,
Thanks for the response!
On Thursday 11 August 2016 10:38 PM, Catalin Marinas wrote:
> On Thu, Aug 11, 2016 at 07:48:12PM +0300, Grygorii Strashko wrote:
>> On 08/11/2016 06:54 PM, Catalin Marinas wrote:
>>> On Thu, Aug 11, 2016 at 05:20:51PM +0530, Vignesh R wrote:
>>>> I see the below message from kmemleak when booting linux-next on AM335x
>>>> GP EVM and DRA7 EVM
>>>
>>> Can you also reproduce it with 4.8-rc1?
Yes, I can reproduce this on 4.8.0-rc1-g4b9eaf33d83d
[...]
>
> diff --git a/mm/memblock.c b/mm/memblock.c
> index 483197ef613f..7d3361d53ac2 100644
> --- a/mm/memblock.c
> +++ b/mm/memblock.c
> @@ -723,7 +723,8 @@ int __init_memblock memblock_free(phys_addr_t base,
> phys_addr_t size)
> (unsigned long long)base + size - 1,
> (void *)_RET_IP_);
>
> - kmemleak_free_part(__va(base), size);
> + if (base < __pa(high_memory))
> + kmemleak_free_part(__va(base), size);
> return memblock_remove_range(&memblock.reserved, base, size);
> }
>
> @@ -1152,7 +1153,8 @@ static phys_addr_t __init
> memblock_alloc_range_nid(phys_addr_t size,
> * The min_count is set to 0 so that memblock allocations are
> * never reported as leaks.
> */
> - kmemleak_alloc(__va(found), size, 0, 0);
> + if (found < __pa(high_memory))
> + kmemleak_alloc(__va(found), size, 0, 0);
> return found;
> }
> return 0;
> @@ -1399,7 +1401,8 @@ void __init __memblock_free_early(phys_addr_t base,
> phys_addr_t size)
> memblock_dbg("%s: [%#016llx-%#016llx] %pF\n",
> __func__, (u64)base, (u64)base + size - 1,
> (void *)_RET_IP_);
> - kmemleak_free_part(__va(base), size);
> + if (base < __pa(high_memory))
> + kmemleak_free_part(__va(base), size);
> memblock_remove_range(&memblock.reserved, base, size);
> }
>
> @@ -1419,7 +1422,8 @@ void __init __memblock_free_late(phys_addr_t base,
> phys_addr_t size)
> memblock_dbg("%s: [%#016llx-%#016llx] %pF\n",
> __func__, (u64)base, (u64)base + size - 1,
> (void *)_RET_IP_);
> - kmemleak_free_part(__va(base), size);
> + if (base < __pa(high_memory))
> + kmemleak_free_part(__va(base), size);
> cursor = PFN_UP(base);
> end = PFN_DOWN(base + size);
>
>
With above change on 4.8-rc1, I see a different warning from kmemleak:
[ 0.002918] kmemleak: Trying to color unknown object at 0xfe800000 as
Black
[ 0.002943] CPU: 0 PID: 0 Comm: swapper/0 Not tainted
4.8.0-rc1-00121-g4b9eaf33d83d-dirty #59
[ 0.002955] Hardware name: Generic AM33XX (Flattened Device Tree)
[ 0.003000] [<c01100fc>] (unwind_backtrace) from [<c010c264>]
(show_stack+0x10/0x14)
[ 0.003027] [<c010c264>] (show_stack) from [<c049040c>]
(dump_stack+0xac/0xe0)
[ 0.003052] [<c049040c>] (dump_stack) from [<c02971c0>]
(paint_ptr+0x78/0x9c)
[ 0.003074] [<c02971c0>] (paint_ptr) from [<c0b25e20>]
(kmemleak_init+0x1cc/0x284)
[ 0.003104] [<c0b25e20>] (kmemleak_init) from [<c0b00bc0>]
(start_kernel+0x2d8/0x3b4)
[ 0.003122] [<c0b00bc0>] (start_kernel) from [<8000807c>] (0x8000807c)
[ 0.003133] kmemleak: Early log backtrace:
[ 0.003146] [<c0b3c9cc>] dma_contiguous_reserve+0x80/0x94
[ 0.003170] [<c0b06810>] arm_memblock_init+0x130/0x184
[ 0.003191] [<c0b04210>] setup_arch+0x58c/0xc00
[ 0.003208] [<c0b00940>] start_kernel+0x58/0x3b4
[ 0.003224] [<8000807c>] 0x8000807c
[ 0.003239] [<ffffffff>] 0xffffffff
Full boot log: http://pastebin.ubuntu.com/23048180/
--
Thanks
Vignesh
