From: Elena Reshetova <elena.reshetova@intel.com>
To: linux-kernel@vger.kernel.org
Cc: linux-fsdevel@vger.kernel.org, peterz@infradead.org,
gregkh@linuxfoundation.org, viro@zeniv.linux.org.uk,
tj@kernel.org, mingo@redhat.com, hannes@cmpxchg.org,
lizefan@huawei.com, acme@kernel.org,
alexander.shishkin@linux.intel.com, eparis@redhat.com,
akpm@linux-foundation.org, arnd@arndb.de, luto@kernel.org,
keescook@chromium.org, tglx@linutronix.de, dvhart@infradead.org,
ebiederm@xmission.com,
Elena Reshetova <elena.reshetova@intel.com>
Subject: [PATCH 00/15] v5 kernel core pieces refcount conversions
Date: Wed, 30 Aug 2017 15:22:38 +0300 [thread overview]
Message-ID: <1504095773-22895-1-git-send-email-elena.reshetova@intel.com> (raw)
Now we have at least x86 support for ARCH_HAS_REFCOUNT merged and
arm and others on their way.
Changes in v5:
* Kees catched that the following changes in
perf_event_context.refcount and futex_pi_state.refcount
are not correct now when ARCH_HAS_REFCOUNT is enabled:
- WARN_ON(!atomic_inc_not_zero(refcount));
+ refcount_inc(refcount);
So they are now changed back to using refcount_inc_not_zero.
Changes in v4:
* just rebase and corrections on linux-next/master
Changes in v3:
* SoB chain corrected
* minor corrections based on v2 feedback
* rebase on linux-next/master as of today
Changes in v2:
* dropped already merged patches
* rebase on top of linux-next/master
* Now by default refcount_t = atomic_t (*) and uses all atomic
standard operations unless CONFIG_REFCOUNT_FULL is enabled.
This is a compromise for the systems that are critical on
performance (such as net) and cannot accept even slight delay
on the refcounter operations.
This series, for core kernel components, replaces atomic_t reference
counters with the new refcount_t type and API (see include/linux/refcount.h).
By doing this we prevent intentional or accidental
underflows or overflows that can led to use-after-free vulnerabilities.
The patches are fully independent and can be cherry-picked separately.
If there are no objections to the patches, please merge them via respective trees.
Elena Reshetova (15):
sched: convert sighand_struct.count to refcount_t
sched: convert signal_struct.sigcnt to refcount_t
sched: convert user_struct.__count to refcount_t
sched: convert numa_group.refcount to refcount_t
sched/task_struct: convert task_struct.usage to refcount_t
sched/task_struct: convert task_struct.stack_refcount to refcount_t
perf: convert perf_event_context.refcount to refcount_t
perf/ring_buffer: convert ring_buffer.refcount to refcount_t
perf/ring_buffer: convert ring_buffer.aux_refcount to refcount_t
uprobes: convert uprobe.ref to refcount_t
nsproxy: convert nsproxy.count to refcount_t
groups: convert group_info.usage to refcount_t
creds: convert cred.usage to refcount_t
futex: convert futex_pi_state.refcount to refcount_t
kcov: convert kcov.refcount to refcount_t
fs/exec.c | 4 ++--
fs/proc/task_nommu.c | 2 +-
include/linux/cred.h | 13 ++++++------
include/linux/init_task.h | 7 +++---
include/linux/nsproxy.h | 6 +++---
include/linux/perf_event.h | 3 ++-
include/linux/sched.h | 5 +++--
include/linux/sched/signal.h | 5 +++--
include/linux/sched/task.h | 4 ++--
include/linux/sched/task_stack.h | 2 +-
include/linux/sched/user.h | 5 +++--
kernel/cred.c | 46 ++++++++++++++++++++--------------------
kernel/events/core.c | 18 ++++++++--------
kernel/events/internal.h | 5 +++--
kernel/events/ring_buffer.c | 8 +++----
kernel/events/uprobes.c | 8 +++----
kernel/fork.c | 24 ++++++++++-----------
kernel/futex.c | 13 ++++++------
kernel/groups.c | 2 +-
kernel/kcov.c | 9 ++++----
kernel/nsproxy.c | 6 +++---
kernel/sched/fair.c | 12 +++++------
kernel/user.c | 8 +++----
23 files changed, 112 insertions(+), 103 deletions(-)
--
2.7.4
next reply other threads:[~2017-08-30 12:23 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-30 12:22 Elena Reshetova [this message]
2017-08-30 12:22 ` [PATCH 01/15] sched: convert sighand_struct.count to refcount_t Elena Reshetova
2017-08-30 12:22 ` [PATCH 02/15] sched: convert signal_struct.sigcnt " Elena Reshetova
2017-08-30 12:22 ` [PATCH 03/15] sched: convert user_struct.__count " Elena Reshetova
2017-08-30 12:22 ` [PATCH 04/15] sched: convert numa_group.refcount " Elena Reshetova
2017-08-30 12:22 ` [PATCH 05/15] sched/task_struct: convert task_struct.usage " Elena Reshetova
2017-08-30 12:22 ` [PATCH 06/15] sched/task_struct: convert task_struct.stack_refcount " Elena Reshetova
2017-08-30 12:22 ` [PATCH 07/15] perf: convert perf_event_context.refcount " Elena Reshetova
2017-08-30 12:22 ` [PATCH 08/15] perf/ring_buffer: convert ring_buffer.refcount " Elena Reshetova
2017-08-30 12:22 ` [PATCH 09/15] perf/ring_buffer: convert ring_buffer.aux_refcount " Elena Reshetova
2017-08-30 12:22 ` [PATCH 10/15] uprobes: convert uprobe.ref " Elena Reshetova
2017-08-30 12:22 ` [PATCH 11/15] nsproxy: convert nsproxy.count " Elena Reshetova
2017-08-30 12:22 ` [PATCH 12/15] groups: convert group_info.usage " Elena Reshetova
2017-08-30 12:22 ` [PATCH 13/15] creds: convert cred.usage " Elena Reshetova
2017-08-30 12:22 ` [PATCH 14/15] futex: convert futex_pi_state.refcount " Elena Reshetova
2017-09-01 7:39 ` Thomas Gleixner
2017-09-01 9:38 ` Peter Zijlstra
2017-09-01 9:43 ` Thomas Gleixner
2017-09-01 10:52 ` Reshetova, Elena
2017-09-01 10:52 ` Reshetova, Elena
2017-09-01 11:05 ` Reshetova, Elena
2017-09-01 11:05 ` Reshetova, Elena
2017-09-01 12:34 ` Peter Zijlstra
2017-09-01 12:34 ` Peter Zijlstra
2017-09-01 13:24 ` Reshetova, Elena
2017-09-01 13:24 ` Reshetova, Elena
2017-09-01 13:36 ` Peter Zijlstra
2017-09-01 13:36 ` Peter Zijlstra
2017-09-01 17:03 ` Reshetova, Elena
2017-09-01 17:03 ` Reshetova, Elena
2017-09-01 19:12 ` Peter Zijlstra
2017-09-01 19:12 ` Peter Zijlstra
2017-09-04 10:31 ` Reshetova, Elena
2017-09-04 10:31 ` Reshetova, Elena
2017-09-04 12:00 ` Peter Zijlstra
2017-09-04 12:00 ` Peter Zijlstra
2017-09-14 16:02 ` Reshetova, Elena
2017-09-14 16:02 ` Reshetova, Elena
2017-10-20 12:03 ` Reshetova, Elena
2017-10-20 12:03 ` Reshetova, Elena
2017-10-20 12:30 ` Thomas Gleixner
2017-10-20 12:30 ` Thomas Gleixner
2017-10-23 7:36 ` Reshetova, Elena
2017-10-23 7:36 ` Reshetova, Elena
2017-08-30 12:22 ` [PATCH 15/15] kcov: convert kcov.refcount " Elena Reshetova
2017-08-31 23:48 ` [PATCH 00/15] v5 kernel core pieces refcount conversions Kees Cook
2017-09-01 9:48 ` Peter Zijlstra
2017-09-01 16:55 ` Kees Cook
2017-09-01 17:08 ` Reshetova, Elena
2017-10-20 12:15 Elena Reshetova
2017-10-20 12:15 ` Elena Reshetova
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1504095773-22895-1-git-send-email-elena.reshetova@intel.com \
--to=elena.reshetova@intel.com \
--cc=acme@kernel.org \
--cc=akpm@linux-foundation.org \
--cc=alexander.shishkin@linux.intel.com \
--cc=arnd@arndb.de \
--cc=dvhart@infradead.org \
--cc=ebiederm@xmission.com \
--cc=eparis@redhat.com \
--cc=gregkh@linuxfoundation.org \
--cc=hannes@cmpxchg.org \
--cc=keescook@chromium.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=lizefan@huawei.com \
--cc=luto@kernel.org \
--cc=mingo@redhat.com \
--cc=peterz@infradead.org \
--cc=tglx@linutronix.de \
--cc=tj@kernel.org \
--cc=viro@zeniv.linux.org.uk \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.