Messages in this thread | | | Date | Fri, 26 Oct 2007 14:33:15 +0200 (CEST) | From | Jan Engelhardt <> | Subject | Re: [PATCH] [RFC] brk randomization: compute RLIMIT_DATA properly (was Re: x86: randomize brk() and RLIMIT_DATA) |
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On Oct 26 2007 13:30, Hugh Dickins wrote: >> @@ -251,7 +251,8 @@ asmlinkage unsigned long sys_brk(unsigned long brk) >> * not page aligned -Ram Gupta >> */ >> rlim = current->signal->rlim[RLIMIT_DATA].rlim_cur; >> - if (rlim < RLIM_INFINITY && brk - mm->start_data > rlim) >> + if (rlim < RLIM_INFINITY && (brk - mm->start_brk) + >> + (mm->end_data - mm->start_data) > rlim) >> goto out; >> >> newbrk = PAGE_ALIGN(brk);
Parentheses around (brk - mm->start_brk) + (mm->end_data - mm->start_data) not strictly necessary. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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