On Thu, Oct 30, 2020 at 21:02PM, Mark Brown <broo...@kernel.org> wrote:
> -----Original Message----- > From: Mark Brown <broo...@kernel.org> > Sent: 2020年10月30日 21:02 > To: Qiang Zhao <qiang.z...@nxp.com> > Cc: olte...@gmail.com; linux-...@vger.kernel.org; > linux-kernel@vger.kernel.org > Subject: Re: [PATCH] spi: fsl-dspi: fix NULL pointer dereference > > On Thu, Oct 29, 2020 at 04:40:35PM +0800, Qiang Zhao wrote: > > > [ 64.587431] Unable to handle kernel NULL pointer dereference at > > virtual address 0000000000000020 > > [..] > > [ 64.756080] Call trace: > > [ 64.758526] dspi_suspend+0x30/0x78 > > [ 64.762012] platform_pm_suspend+0x28/0x70 > > [ 64.766107] dpm_run_callback.isra.19+0x24/0x70 > > [ 64.770635] __device_suspend+0xf4/0x2f0 > > [ 64.774553] dpm_suspend+0xec/0x1e0 > > [ 64.778036] dpm_suspend_start+0x80/0xa0 > > [ 64.781957] suspend_devices_and_enter+0x118/0x4f0 > > [ 64.786743] pm_suspend+0x1e0/0x260 > > [ 64.790227] state_store+0x8c/0x118 > > [ 64.793712] kobj_attr_store+0x18/0x30 > > [ 64.797459] sysfs_kf_write+0x40/0x58 > > [ 64.801118] kernfs_fop_write+0x148/0x240 > > [ 64.805126] vfs_write+0xc0/0x230 > > [ 64.808436] ksys_write+0x6c/0x100 > > [ 64.811833] __arm64_sys_write+0x1c/0x28 > > [ 64.815753] el0_svc_common.constprop.3+0x68/0x170 > > [ 64.820541] do_el0_svc+0x24/0x90 > > [ 64.823853] el0_sync_handler+0x118/0x168 > > [ 64.827858] el0_sync+0x158/0x180 > > Please think hard before including complete backtraces in upstream reports, > they are very large and contain almost no useful information relative to their > size so often obscure the relevant content in your message. If part of the > backtrace is usefully illustrative (it often is for search engines if nothing > else) > then it's usually better to pull out the relevant sections. Ok, will modified in next version. Best Regards, Qiang Zhao
