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Date: Tue, 01 Dec 2020 15:04:27 +0100 From: Michael Walle <michael@...le.cc> To: Mark Brown <broonie@...nel.org> Cc: linux-kernel@...r.kernel.org, linux-spi@...r.kernel.org, Vladimir Oltean <olteanv@...il.com>, Krzysztof Kozlowski <krzk@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de> Subject: Re: [PATCH v3] spi: fsl-dspi: fix NULL pointer dereference Hi Mark, Am 2020-12-01 14:57, schrieb Mark Brown: > On Mon, 28 Sep 2020 10:55:00 +0200, Michael Walle wrote: >> Since commit 530b5affc675 ("spi: fsl-dspi: fix use-after-free in >> remove >> path") this driver causes a kernel oops: >> >> [ 1.891065] Unable to handle kernel NULL pointer dereference at >> virtual address 0000000000000080 >> [..] >> [ 2.056973] Call trace: >> [ 2.059425] dspi_setup+0xc8/0x2e0 >> [ 2.062837] spi_setup+0xcc/0x248 >> [ 2.066160] spi_add_device+0xb4/0x198 >> [ 2.069918] of_register_spi_device+0x250/0x370 >> [ 2.074462] spi_register_controller+0x4f4/0x770 >> [ 2.079094] dspi_probe+0x5bc/0x7b0 >> [ 2.082594] platform_drv_probe+0x5c/0xb0 >> [ 2.086615] really_probe+0xec/0x3c0 >> [ 2.090200] driver_probe_device+0x60/0xc0 >> [ 2.094308] device_driver_attach+0x7c/0x88 >> [ 2.098503] __driver_attach+0x60/0xe8 >> [ 2.102263] bus_for_each_dev+0x7c/0xd0 >> [ 2.106109] driver_attach+0x2c/0x38 >> [ 2.109692] bus_add_driver+0x194/0x1f8 >> [ 2.113538] driver_register+0x6c/0x128 >> [ 2.117385] __platform_driver_register+0x50/0x60 >> [ 2.122105] fsl_dspi_driver_init+0x24/0x30 >> [ 2.126302] do_one_initcall+0x54/0x2d0 >> [ 2.130149] kernel_init_freeable+0x1ec/0x258 >> [ 2.134520] kernel_init+0x1c/0x120 >> [ 2.138018] ret_from_fork+0x10/0x34 >> [ 2.141606] Code: 97e0b11d aa0003f3 b4000680 f94006e0 (f9404000) >> [ 2.147723] ---[ end trace 26cf63e6cbba33a8 ]--- >> >> [...] > > Applied to > > https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git > for-next Is that correct? Some time ago you've already applied that to your spi tree: https://lore.kernel.org/linux-spi/160132174502.55568.11234605078950751454.b4-ty@kernel.org/ -michael
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