Re: exec error: BUG: Bad rss-counter

2021-03-30 Thread Linus Torvalds
On Tue, Mar 30, 2021 at 9:36 AM Ilya Lipnitskiy wrote: > > Sorry, I could have done better linking it to this thread - I actually > did submit it recently - please see > https://lkml.kernel.org/r/20210330044208.8305-1-ilya.lipnits...@gmail.com Oh, ok, that looks fine. Thanks, applied,

Re: exec error: BUG: Bad rss-counter

2021-03-30 Thread Ilya Lipnitskiy
On Tue, Mar 30, 2021 at 9:11 AM Linus Torvalds wrote: > > On Mon, Mar 29, 2021 at 9:56 PM Zhou Yanjie wrote: > > > > On 2021/3/29 上午10:48, Ilya Lipnitskiy wrote: > > > > > > Try: > > > diff --git a/mm/memory.c b/mm/memory.c > > > index c8e357627318..1fd753245369 100644 > > > --- a/mm/memory.c >

Re: exec error: BUG: Bad rss-counter

2021-03-30 Thread Linus Torvalds
On Mon, Mar 29, 2021 at 9:56 PM Zhou Yanjie wrote: > > On 2021/3/29 上午10:48, Ilya Lipnitskiy wrote: > > > > Try: > > diff --git a/mm/memory.c b/mm/memory.c > > index c8e357627318..1fd753245369 100644 > > --- a/mm/memory.c > > +++ b/mm/memory.c > > @@ -166,7 +166,7 @@ static int __init

Re: exec error: BUG: Bad rss-counter

2021-03-29 Thread Zhou Yanjie
Hi Ilya, On 2021/3/29 上午10:48, Ilya Lipnitskiy wrote: On Sat, Mar 20, 2021 at 8:59 AM Zhou Yanjie wrote: Hi Ilya, On 2021/3/3 下午11:55, Ilya Lipnitskiy wrote: On Wed, Mar 3, 2021 at 7:50 AM Eric W. Biederman wrote: Ilya Lipnitskiy writes: On Tue, Mar 2, 2021 at 11:37 AM Eric W.

Re: exec error: BUG: Bad rss-counter

2021-03-28 Thread Ilya Lipnitskiy
On Sat, Mar 20, 2021 at 8:59 AM Zhou Yanjie wrote: > > Hi Ilya, > > On 2021/3/3 下午11:55, Ilya Lipnitskiy wrote: > > On Wed, Mar 3, 2021 at 7:50 AM Eric W. Biederman > > wrote: > >> Ilya Lipnitskiy writes: > >> > >>> On Tue, Mar 2, 2021 at 11:37 AM Eric W. Biederman > >>> wrote: > Ilya

Re: exec error: BUG: Bad rss-counter

2021-03-28 Thread Ilya Lipnitskiy
On Wed, Mar 3, 2021 at 7:50 AM Eric W. Biederman wrote: > > Ilya Lipnitskiy writes: > > > On Tue, Mar 2, 2021 at 11:37 AM Eric W. Biederman > > wrote: > >> > >> Ilya Lipnitskiy writes: > >> > >> > On Mon, Mar 1, 2021 at 12:43 PM Eric W. Biederman > >> > wrote: > >> >> > >> >> Ilya

Re: exec error: BUG: Bad rss-counter

2021-03-20 Thread Zhou Yanjie
Hi Ilya, On 2021/3/3 下午11:55, Ilya Lipnitskiy wrote: On Wed, Mar 3, 2021 at 7:50 AM Eric W. Biederman wrote: Ilya Lipnitskiy writes: On Tue, Mar 2, 2021 at 11:37 AM Eric W. Biederman wrote: Ilya Lipnitskiy writes: On Mon, Mar 1, 2021 at 12:43 PM Eric W. Biederman wrote: Ilya

Re: exec error: BUG: Bad rss-counter

2021-03-03 Thread Eric W. Biederman
Ilya Lipnitskiy writes: > On Wed, Mar 3, 2021 at 7:50 AM Eric W. Biederman > wrote: >> >> Ilya Lipnitskiy writes: >> >> > On Tue, Mar 2, 2021 at 11:37 AM Eric W. Biederman >> > wrote: >> >> >> >> Ilya Lipnitskiy writes: >> >> >> >> > On Mon, Mar 1, 2021 at 12:43 PM Eric W. Biederman >> >>

Re: exec error: BUG: Bad rss-counter

2021-03-03 Thread Ilya Lipnitskiy
On Wed, Mar 3, 2021 at 7:50 AM Eric W. Biederman wrote: > > Ilya Lipnitskiy writes: > > > On Tue, Mar 2, 2021 at 11:37 AM Eric W. Biederman > > wrote: > >> > >> Ilya Lipnitskiy writes: > >> > >> > On Mon, Mar 1, 2021 at 12:43 PM Eric W. Biederman > >> > wrote: > >> >> > >> >> Ilya

Re: exec error: BUG: Bad rss-counter

2021-03-03 Thread Eric W. Biederman
Ilya Lipnitskiy writes: > On Tue, Mar 2, 2021 at 11:37 AM Eric W. Biederman > wrote: >> >> Ilya Lipnitskiy writes: >> >> > On Mon, Mar 1, 2021 at 12:43 PM Eric W. Biederman >> > wrote: >> >> >> >> Ilya Lipnitskiy writes: >> >> >> >> > Eric, All, >> >> > >> >> > The following error appears

Re: exec error: BUG: Bad rss-counter

2021-03-03 Thread Ilya Lipnitskiy
On Tue, Mar 2, 2021 at 10:56 AM Linus Torvalds wrote: > > On Mon, Mar 1, 2021 at 11:59 PM Ilya Lipnitskiy > wrote: > > > > Good to know. Some more digging and I can say that we hit this error > > when trying to unmap PFN 0 (is_zero_pfn(pfn) returns TRUE, > > vm_normal_page returns NULL,

Re: exec error: BUG: Bad rss-counter

2021-03-03 Thread Ilya Lipnitskiy
On Tue, Mar 2, 2021 at 11:37 AM Eric W. Biederman wrote: > > Ilya Lipnitskiy writes: > > > On Mon, Mar 1, 2021 at 12:43 PM Eric W. Biederman > > wrote: > >> > >> Ilya Lipnitskiy writes: > >> > >> > Eric, All, > >> > > >> > The following error appears when running Linux 5.10.18 on an embedded

Re: exec error: BUG: Bad rss-counter

2021-03-02 Thread Eric W. Biederman
Ilya Lipnitskiy writes: > On Mon, Mar 1, 2021 at 12:43 PM Eric W. Biederman > wrote: >> >> Ilya Lipnitskiy writes: >> >> > Eric, All, >> > >> > The following error appears when running Linux 5.10.18 on an embedded >> > MIPS mt7621 target: >> > [0.301219] BUG: Bad rss-counter state

Re: exec error: BUG: Bad rss-counter

2021-03-02 Thread Linus Torvalds
On Mon, Mar 1, 2021 at 11:59 PM Ilya Lipnitskiy wrote: > > Good to know. Some more digging and I can say that we hit this error > when trying to unmap PFN 0 (is_zero_pfn(pfn) returns TRUE, > vm_normal_page returns NULL, zap_pte_range does not decrement > MM_ANONPAGES RSS counter). Is my

Re: exec error: BUG: Bad rss-counter

2021-03-02 Thread Ilya Lipnitskiy
On Mon, Mar 1, 2021 at 12:43 PM Eric W. Biederman wrote: > > Ilya Lipnitskiy writes: > > > Eric, All, > > > > The following error appears when running Linux 5.10.18 on an embedded > > MIPS mt7621 target: > > [0.301219] BUG: Bad rss-counter state mm:(ptrval) type:MM_ANONPAGES > > val:1 > > >

Re: exec error: BUG: Bad rss-counter

2021-03-01 Thread Eric W. Biederman
Ilya Lipnitskiy writes: > Eric, All, > > The following error appears when running Linux 5.10.18 on an embedded > MIPS mt7621 target: > [0.301219] BUG: Bad rss-counter state mm:(ptrval) type:MM_ANONPAGES val:1 > > Being a very generic error, I started digging and added a stack dump > before

exec error: BUG: Bad rss-counter

2021-02-28 Thread Ilya Lipnitskiy
Eric, All, The following error appears when running Linux 5.10.18 on an embedded MIPS mt7621 target: [0.301219] BUG: Bad rss-counter state mm:(ptrval) type:MM_ANONPAGES val:1 Being a very generic error, I started digging and added a stack dump before the BUG: Call Trace: [<80008094>]