From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Richard Weinberger <richard@nod.at>,
Vignesh Raghavendra <vigneshr@ti.com>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre Torgue <alexandre.torgue@foss.st.com>,
Boris Brezillon <bbrezillon@kernel.org>,
Christophe Kerello <christophe.kerello@st.com>,
Christophe Kerello <christophe.kerello@foss.st.com>
Cc: linux-mtd@lists.infradead.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH] mtd: rawnand: stm32_fmc2: avoid overlapping mappings on ECC buffer
Date: Mon, 01 Sep 2025 14:26:08 +0200 [thread overview]
Message-ID: <175672956825.48300.17672070424508952641.b4-ty@bootlin.com> (raw)
In-Reply-To: <20250812-fix-dma-overlapping-v1-1-c3bf81d79de7@foss.st.com>
On Tue, 12 Aug 2025 09:26:58 +0200, Christophe Kerello wrote:
> Avoid below overlapping mappings by using a contiguous
> non-cacheable buffer.
>
> [ 4.077708] DMA-API: stm32_fmc2_nfc 48810000.nand-controller: cacheline tracking EEXIST,
> overlapping mappings aren't supported
> [ 4.089103] WARNING: CPU: 1 PID: 44 at kernel/dma/debug.c:568 add_dma_entry+0x23c/0x300
> [ 4.097071] Modules linked in:
> [ 4.100101] CPU: 1 PID: 44 Comm: kworker/u4:2 Not tainted 6.1.82 #1
> [ 4.106346] Hardware name: STMicroelectronics STM32MP257F VALID1 SNOR / MB1704 (LPDDR4 Power discrete) + MB1703 + MB1708 (SNOR MB1730) (DT)
> [ 4.118824] Workqueue: events_unbound deferred_probe_work_func
> [ 4.124674] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
> [ 4.131624] pc : add_dma_entry+0x23c/0x300
> [ 4.135658] lr : add_dma_entry+0x23c/0x300
> [ 4.139792] sp : ffff800009dbb490
> [ 4.143016] x29: ffff800009dbb4a0 x28: 0000000004008022 x27: ffff8000098a6000
> [ 4.150174] x26: 0000000000000000 x25: ffff8000099e7000 x24: ffff8000099e7de8
> [ 4.157231] x23: 00000000ffffffff x22: 0000000000000000 x21: ffff8000098a6a20
> [ 4.164388] x20: ffff000080964180 x19: ffff800009819ba0 x18: 0000000000000006
> [ 4.171545] x17: 6361727420656e69 x16: 6c6568636163203a x15: 72656c6c6f72746e
> [ 4.178602] x14: 6f632d646e616e2e x13: ffff800009832f58 x12: 00000000000004ec
> [ 4.185759] x11: 00000000000001a4 x10: ffff80000988af58 x9 : ffff800009832f58
> [ 4.192916] x8 : 00000000ffffefff x7 : ffff80000988af58 x6 : 80000000fffff000
> [ 4.199972] x5 : 000000000000bff4 x4 : 0000000000000000 x3 : 0000000000000000
> [ 4.207128] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000812d2c40
> [ 4.214185] Call trace:
> [ 4.216605] add_dma_entry+0x23c/0x300
> [ 4.220338] debug_dma_map_sg+0x198/0x350
> [ 4.224373] __dma_map_sg_attrs+0xa0/0x110
> [ 4.228411] dma_map_sg_attrs+0x10/0x2c
> [ 4.232247] stm32_fmc2_nfc_xfer.isra.0+0x1c8/0x3fc
> [ 4.237088] stm32_fmc2_nfc_seq_read_page+0xc8/0x174
> [ 4.242127] nand_read_oob+0x1d4/0x8e0
> [ 4.245861] mtd_read_oob_std+0x58/0x84
> [ 4.249596] mtd_read_oob+0x90/0x150
> [ 4.253231] mtd_read+0x68/0xac
>
> [...]
Applied to mtd/fixes, thanks!
[1/1] mtd: rawnand: stm32_fmc2: avoid overlapping mappings on ECC buffer
commit: 513c40e59d5a414ab763a9c84797534b5e8c208d
Patche(s) should be available on mtd/linux.git and will be
part of the next PR (provided that no robot complains by then).
Kind regards,
Miquèl
prev parent reply other threads:[~2025-09-01 12:26 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-12 7:26 Christophe Kerello
2025-09-01 12:26 ` Miquel Raynal [this message]
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