Re: [External] Re: [PATCH v2] stackleak: Fix a race between stack erasing sysctl handlers

2020-09-28 Thread Muchun Song
On Mon, Sep 28, 2020 at 2:32 PM Alexander Popov wrote: > > On 22.09.2020 08:59, Muchun Song wrote: > > On Mon, Sep 14, 2020 at 9:56 PM Alexander Popov > > wrote: > >> > >> On 07.09.2020 16:53, Muchun Song wrote: > >>> On Mon, Sep 7, 2020 at 7:24 PM Alexander Popov > >>> wrote: > >

Re: [External] Re: [PATCH v2] stackleak: Fix a race between stack erasing sysctl handlers

2020-09-28 Thread Alexander Popov
On 22.09.2020 08:59, Muchun Song wrote: > On Mon, Sep 14, 2020 at 9:56 PM Alexander Popov wrote: >> >> On 07.09.2020 16:53, Muchun Song wrote: >>> On Mon, Sep 7, 2020 at 7:24 PM Alexander Popov wrote: On 07.09.2020 05:54, Muchun Song wrote: > Hi all, > > Any comments or

Re: [External] Re: [PATCH v2] stackleak: Fix a race between stack erasing sysctl handlers

2020-09-22 Thread Muchun Song
On Mon, Sep 14, 2020 at 9:56 PM Alexander Popov wrote: > > On 07.09.2020 16:53, Muchun Song wrote: > > On Mon, Sep 7, 2020 at 7:24 PM Alexander Popov wrote: > >> > >> On 07.09.2020 05:54, Muchun Song wrote: > >>> Hi all, > >>> > >>> Any comments or suggestions? Thanks. > >>> > >>> On Fri, Aug

Re: [External] Re: [PATCH v2] stackleak: Fix a race between stack erasing sysctl handlers

2020-09-14 Thread Muchun Song
On Mon, Sep 14, 2020 at 9:56 PM Alexander Popov wrote: > > On 07.09.2020 16:53, Muchun Song wrote: > > On Mon, Sep 7, 2020 at 7:24 PM Alexander Popov wrote: > >> > >> On 07.09.2020 05:54, Muchun Song wrote: > >>> Hi all, > >>> > >>> Any comments or suggestions? Thanks. > >>> > >>> On Fri, Aug

Re: [External] Re: [PATCH v2] stackleak: Fix a race between stack erasing sysctl handlers

2020-09-14 Thread Alexander Popov
On 07.09.2020 16:53, Muchun Song wrote: > On Mon, Sep 7, 2020 at 7:24 PM Alexander Popov wrote: >> >> On 07.09.2020 05:54, Muchun Song wrote: >>> Hi all, >>> >>> Any comments or suggestions? Thanks. >>> >>> On Fri, Aug 28, 2020 at 11:19 AM Muchun Song >>> wrote: There is a race

Re: [External] Re: [PATCH v2] stackleak: Fix a race between stack erasing sysctl handlers

2020-09-10 Thread Muchun Song
Ping guys. Thanks. On Mon, Sep 7, 2020 at 9:53 PM Muchun Song wrote: > > On Mon, Sep 7, 2020 at 7:24 PM Alexander Popov wrote: > > > > On 07.09.2020 05:54, Muchun Song wrote: > > > Hi all, > > > > > > Any comments or suggestions? Thanks. > > > > > > On Fri, Aug 28, 2020 at 11:19 AM Muchun Song

Re: [PATCH v2] stackleak: Fix a race between stack erasing sysctl handlers

2020-09-07 Thread Alexander Popov
On 07.09.2020 05:54, Muchun Song wrote: > Hi all, > > Any comments or suggestions? Thanks. > > On Fri, Aug 28, 2020 at 11:19 AM Muchun Song wrote: >> >> There is a race between the assignment of `table->data` and write value >> to the pointer of `table->data` in the

Re: [External] Re: [PATCH v2] stackleak: Fix a race between stack erasing sysctl handlers

2020-09-07 Thread Muchun Song
On Mon, Sep 7, 2020 at 7:24 PM Alexander Popov wrote: > > On 07.09.2020 05:54, Muchun Song wrote: > > Hi all, > > > > Any comments or suggestions? Thanks. > > > > On Fri, Aug 28, 2020 at 11:19 AM Muchun Song > > wrote: > >> > >> There is a race between the assignment of `table->data` and write

Re: [PATCH v2] stackleak: Fix a race between stack erasing sysctl handlers

2020-09-06 Thread Muchun Song
Hi all, Any comments or suggestions? Thanks. On Fri, Aug 28, 2020 at 11:19 AM Muchun Song wrote: > > There is a race between the assignment of `table->data` and write value > to the pointer of `table->data` in the __do_proc_doulongvec_minmax() on > the other thread. > > CPU0:

[PATCH v2] stackleak: Fix a race between stack erasing sysctl handlers

2020-08-27 Thread Muchun Song
There is a race between the assignment of `table->data` and write value to the pointer of `table->data` in the __do_proc_doulongvec_minmax() on the other thread. CPU0: CPU1: proc_sys_write stack_erasing_sysctl