| 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, 16 Feb 2015 12:52:33 -0600 From: Josh Poimboeuf <jpoimboe@...hat.com> To: Andrew Morton <akpm@...ux-foundation.org>, Ingo Molnar <mingo@...hat.com>, Peter Zijlstra <peterz@...radead.org> Cc: Jiri Kosina <jkosina@...e.cz>, Seth Jennings <sjenning@...hat.com>, linux-kernel@...r.kernel.org Subject: [PATCH 0/3] prevent /proc/<pid>/stack garbage for running tasks Reading /proc/<pid>/stack for a running task (other than current) can print garbage because the saved stack pointer is no longer accurate and the stack itself can be inconsistent. Add new sched and stacktrace functions so that /proc/<pid>/stack only walks the stack for sleeping tasks and the current task. The new sched_task_call() function will also be useful for future live patching code which will need to atomically examine a task's stack before patching it. Josh Poimboeuf (3): sched: add sched_task_call() stacktrace: add save_stack_trace_tsk_safe() proc: fix /proc/<pid>/stack for running tasks fs/proc/base.c | 2 +- include/linux/sched.h | 4 ++++ include/linux/stacktrace.h | 2 ++ kernel/sched/core.c | 17 +++++++++++++++++ kernel/stacktrace.c | 22 ++++++++++++++++++++++ 5 files changed, 46 insertions(+), 1 deletion(-) -- 2.1.0 -- 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