| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Mon, 8 Jun 2009 21:11:57 +0300 (EEST) From: Pekka J Enberg <penberg@...helsinki.fi> To: mingo@...e.hu cc: linux-kernel@...r.kernel.org, a.p.zijlstra@...llo.nl, acme@...hat.com Subject: [PATCH 1/2] perf_counter: Add mmap event hooks to mprotect() From: Peter Zijlstra <a.p.zijlstra@...llo.nl> Some JIT compilers allocate memory for generated code with posix_memalign() + mprotect() so we need to hook into mprotect() to make sure 'perf' is aware that we're executing code in anonymous memory. [ penberg@...helsinki.fi: move the hook to sys_mprotect() ] Cc: Arnaldo Carvalho de Melo <acme@...hat.com> Signed-off-by: Pekka Enberg <penberg@...helsinki.fi> --- mm/mprotect.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/mm/mprotect.c b/mm/mprotect.c index 258197b..d80311b 100644 --- a/mm/mprotect.c +++ b/mm/mprotect.c @@ -23,6 +23,7 @@ #include <linux/swapops.h> #include <linux/mmu_notifier.h> #include <linux/migrate.h> +#include <linux/perf_counter.h> #include <asm/uaccess.h> #include <asm/pgtable.h> #include <asm/cacheflush.h> @@ -299,6 +300,7 @@ SYSCALL_DEFINE3(mprotect, unsigned long, start, size_t, len, error = mprotect_fixup(vma, &prev, nstart, tmp, newflags); if (error) goto out; + perf_counter_mmap(vma); nstart = tmp; if (nstart < prev->vm_end) -- 1.5.6.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists