Re: [PATCH v3 1/2] MIPS: Don't crash in stack_top() for tasks without ABI or vDSO

Hi Huacai, On Tue, Apr 15, 2025 at 04:47:31PM +0800, Huacai Chen wrote: > On Tue, Apr 15, 2025 at 3:10 PM Thomas Weißschuh > wrote: > > > > Not all tasks have an ABI associated or vDSO mapped, > > for example kthreads never do. > > If such a task ever ends up calling stack_top(), it will derefenc

[PATCH v3 1/2] MIPS: Don't crash in stack_top() for tasks without ABI or vDSO

Not all tasks have an ABI associated or vDSO mapped, for example kthreads never do. If such a task ever ends up calling stack_top(), it will derefence the NULL ABI pointer and crash. This can for example happen when using kunit: mips_stack_top+0x28/0xc0 arch_pick_mmap_layout+0x190/0x220

Re: [PATCH v3 1/2] MIPS: Don't crash in stack_top() for tasks without ABI or vDSO

Hi, Thomas, On Tue, Apr 15, 2025 at 3:10 PM Thomas Weißschuh wrote: > > Not all tasks have an ABI associated or vDSO mapped, > for example kthreads never do. > If such a task ever ends up calling stack_top(), it will derefence the > NULL ABI pointer and crash. > > This can for example happen when

Re: [PATCH v3 1/2] MIPS: Don't crash in stack_top() for tasks without ABI or vDSO

On Tue, 15 Apr 2025 at 15:10, Thomas Weißschuh wrote: > > Not all tasks have an ABI associated or vDSO mapped, > for example kthreads never do. > If such a task ever ends up calling stack_top(), it will derefence the > NULL ABI pointer and crash. > > This can for example happen when using kunit: >