From: cov@codeaurora•org (Christopher Covington)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCHv2] mm: page_alloc: fix CMA area initialisation when pageblock > MAX_ORDER
Date: Fri, 20 Jun 2014 09:54:12 -0400 [thread overview]
Message-ID: <53A43D04.9050105@codeaurora.org> (raw)
In-Reply-To: <xa1td2e41xs2.fsf@mina86.com>
On 06/19/2014 03:53 PM, Michal Nazarewicz wrote:
> With a kernel configured with ARM64_64K_PAGES && !TRANSPARENT_HUGEPAGE,
> the following is triggered at early boot:
>
> SMP: Total of 8 processors activated.
> devtmpfs: initialized
> Unable to handle kernel NULL pointer dereference at virtual address 00000008
> pgd = fffffe0000050000
> [00000008] *pgd=00000043fba00003, *pmd=00000043fba00003, *pte=00e0000078010407
> Internal error: Oops: 96000006 [#1] SMP
> Modules linked in:
> CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.15.0-rc864k+ #44
> task: fffffe03bc040000 ti: fffffe03bc080000 task.ti: fffffe03bc080000
> PC is at __list_add+0x10/0xd4
> LR is at free_one_page+0x270/0x638
> ...
> Call trace:
> [<fffffe00003ee970>] __list_add+0x10/0xd4
> [<fffffe000019c478>] free_one_page+0x26c/0x638
> [<fffffe000019c8c8>] __free_pages_ok.part.52+0x84/0xbc
> [<fffffe000019d5e8>] __free_pages+0x74/0xbc
> [<fffffe0000c01350>] init_cma_reserved_pageblock+0xe8/0x104
> [<fffffe0000c24de0>] cma_init_reserved_areas+0x190/0x1e4
> [<fffffe0000090418>] do_one_initcall+0xc4/0x154
> [<fffffe0000bf0a50>] kernel_init_freeable+0x204/0x2a8
> [<fffffe00007520a0>] kernel_init+0xc/0xd4
I just ran into this. Thanks for the fix.
Tested-by: Christopher Covington <cov@codeaurora•org>
--
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
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next prev parent reply other threads:[~2014-06-20 13:54 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-11 21:33 [PATCH] arm64: fix MAX_ORDER for 64K pagesize Mark Salter
2014-06-11 23:03 ` David Rientjes
2014-06-11 23:04 ` David Rientjes
2014-06-12 13:57 ` Mark Salter
2014-06-17 18:32 ` Michal Nazarewicz
2014-06-19 18:12 ` Mark Salter
2014-06-19 19:24 ` Michal Nazarewicz
2014-06-20 17:37 ` Mark Salter
2014-06-23 19:40 ` [PATCHv3] mm: page_alloc: fix CMA area initialisation when pageblock > MAX_ORDER Michal Nazarewicz
2014-06-23 21:10 ` Mark Salter
2014-06-19 19:53 ` [PATCHv2] " Michal Nazarewicz
2014-06-20 13:54 ` Christopher Covington [this message]
2014-06-20 15:48 ` Mark Salter
2014-06-20 16:36 ` Michal Nazarewicz
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