Re: [PATCH 1/1] stackdepot: ignore junk last entry in case of switch from user mode.

2017-10-14 Thread kbuild test robot
Hi Maninder, [auto build test ERROR on linus/master] [also build test ERROR on v4.14-rc4 next-20171013] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url:

Re: [PATCH 1/1] stackdepot: ignore junk last entry in case of switch from user mode.

2017-10-14 Thread kbuild test robot
Hi Maninder, [auto build test ERROR on linus/master] [also build test ERROR on v4.14-rc4 next-20171013] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url:

Re: [PATCH 1/1] stackdepot: ignore junk last entry in case of switch from user mode.

2017-10-11 Thread Dmitry Vyukov
On Wed, Oct 11, 2017 at 1:31 PM, Dmitry Vyukov wrote: > On Wed, Oct 11, 2017 at 1:24 PM, Maninder Singh > wrote: >> Issue observed on ARM. >> >> Whenever there is switch from user mode, we end up with invalid last entry >> with some user space

Re: [PATCH 1/1] stackdepot: ignore junk last entry in case of switch from user mode.

2017-10-11 Thread Dmitry Vyukov
On Wed, Oct 11, 2017 at 1:31 PM, Dmitry Vyukov wrote: > On Wed, Oct 11, 2017 at 1:24 PM, Maninder Singh > wrote: >> Issue observed on ARM. >> >> Whenever there is switch from user mode, we end up with invalid last entry >> with some user space address as below:- >> >> save_stack+0x40/0xec >>

Re: [PATCH 1/1] stackdepot: ignore junk last entry in case of switch from user mode.

2017-10-11 Thread Dmitry Vyukov
On Wed, Oct 11, 2017 at 1:24 PM, Maninder Singh wrote: > Issue observed on ARM. > > Whenever there is switch from user mode, we end up with invalid last entry > with some user space address as below:- > > save_stack+0x40/0xec > __set_page_owner+0x2c/0x64 > > >

Re: [PATCH 1/1] stackdepot: ignore junk last entry in case of switch from user mode.

2017-10-11 Thread Dmitry Vyukov
On Wed, Oct 11, 2017 at 1:24 PM, Maninder Singh wrote: > Issue observed on ARM. > > Whenever there is switch from user mode, we end up with invalid last entry > with some user space address as below:- > > save_stack+0x40/0xec > __set_page_owner+0x2c/0x64 > > >

[PATCH 1/1] stackdepot: ignore junk last entry in case of switch from user mode.

2017-10-11 Thread Maninder Singh
Issue observed on ARM. Whenever there is switch from user mode, we end up with invalid last entry with some user space address as below:- save_stack+0x40/0xec __set_page_owner+0x2c/0x64 __handle_domain_irq+0x9c/0x130 gic_handle_irq+0x40/0x80 __irq_usr+0x4c/0x60 0xb6507818 So in

[PATCH 1/1] stackdepot: ignore junk last entry in case of switch from user mode.

2017-10-11 Thread Maninder Singh
Issue observed on ARM. Whenever there is switch from user mode, we end up with invalid last entry with some user space address as below:- save_stack+0x40/0xec __set_page_owner+0x2c/0x64 __handle_domain_irq+0x9c/0x130 gic_handle_irq+0x40/0x80 __irq_usr+0x4c/0x60 0xb6507818 So in