Re: [PATCH] spi: bitbang: Fix NULL pointer dereference in spi_unregister_master

[YueHaibing <yuehaibing@xxxxxxxxxx>]

On 2019/5/16 17:51, Mark Brown wrote:
> On Thu, May 16, 2019 at 03:56:56PM +0800, YueHaibing wrote:
> 
>> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014
>> Call Trace:
>>  dump_stack+0xa9/0x10e
>>  ? __list_del_entry_valid+0x45/0xd0
>>  ? __list_del_entry_valid+0x45/0xd0
>>  __kasan_report+0x171/0x18d
>>  ? __list_del_entry_valid+0x45/0xd0
>>  kasan_report+0xe/0x20
> 
> 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 then it's
> usually better to pull out the relevant sections.

Thanks, got it.

>