Re: [RFC] ubsan: signed integer overflow in mem_cgroup_event_ratelimit

2017-06-16 Thread Michal Hocko
[CC Andrew] On Fri 16-06-17 21:26:53, Alice Ferrazzi wrote: > Hello, > > a user reported a UBSAN signed integer overflow in memcontrol.c > Shall we change something in mem_cgroup_event_ratelimit()? It took me quite some staring but it seems the report is correct. --- >From 5683a96c2bfe694b66c542

[RFC] ubsan: signed integer overflow in mem_cgroup_event_ratelimit

2017-06-16 Thread Alice Ferrazzi
Hello, a user reported a UBSAN signed integer overflow in memcontrol.c Shall we change something in mem_cgroup_event_ratelimit()? kernel: UBSAN: Undefined behaviour in mm/memcontrol.c:661:17 kernel: signed integer ov

[RFC] ubsan: signed integer overflow in mem_cgroup_event_ratelimit

2017-06-16 Thread Michal Hocko
[your email seems to be corrupted - here is a repost with reconstructed header] On Fri 16-06-17 21:10:26, Alice Ferrazzi wrote: > Hello, > > a user reported a UBSAN signed integer overflow in memcontrol.c > Shall we change something in mem_cgroup_event_ratelimit()? > > ==