On Mon, 3 Dec 2018 11:52:41 +0530 Ravi Bangoria <ravi.bangoria@xxxxxxxxxxxxx> wrote: > Hi Steve, > > Please pull this patch. > Please send a v2 version of the patch with the updated change log. And should it have a Fixes and be tagged for stable? -- Steve > Thanks. > > On 11/15/18 6:13 PM, Oleg Nesterov wrote: > > On 11/15, Ravi Bangoria wrote: > >> > >> There could be a race between task exit and probe unregister: > >> > >> exit_mm() > >> mmput() > >> __mmput() uprobe_unregister() > >> uprobe_clear_state() put_uprobe() > >> delayed_uprobe_remove() delayed_uprobe_remove() > >> > >> put_uprobe() is calling delayed_uprobe_remove() without taking > >> delayed_uprobe_lock and thus the race sometimes results in a > >> kernel crash. Fix this by taking delayed_uprobe_lock before > >> calling delayed_uprobe_remove() from put_uprobe(). > >> > >> Detailed crash log can be found at: > >> https://lkml.org/lkml/2018/11/1/1244 > > > > Thanks, looks good, > > > > Oleg. > >
