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Groups > linux.kernel > #1690062
| From | Elena Reshetova <elena.reshetova@intel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 00/15] v4 kernel core pieces refcount conversions |
| Date | 2017-07-18 12:40 +0200 |
| Message-ID | <u4y55-1ed-29@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
Changes in v4: * commit messages adjusted * subsystem prefixes corrected 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. If you want to test with refcount_t protection enabled, CONFIG_REFCOUNT_FULL must be enabled. * The respective change is currently merged into -next as "locking/refcount: Create unchecked atomic_t implementation". 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 | 8 +++---- kernel/user.c | 8 +++---- 23 files changed, 110 insertions(+), 101 deletions(-) -- 2.7.4
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[PATCH 00/15] v4 kernel core pieces refcount conversions Elena Reshetova <elena.reshetova@intel.com> - 2017-07-18 12:40 +0200 [PATCH 14/15] futex: convert futex_pi_state.refcount to refcount_t Elena Reshetova <elena.reshetova@intel.com> - 2017-07-18 12:40 +0200 [PATCH 03/15] sched: convert user_struct.__count to refcount_t Elena Reshetova <elena.reshetova@intel.com> - 2017-07-18 12:40 +0200 [PATCH 12/15] groups: convert group_info.usage to refcount_t Elena Reshetova <elena.reshetova@intel.com> - 2017-07-18 12:40 +0200 [PATCH 11/15] nsproxy: convert nsproxy.count to refcount_t Elena Reshetova <elena.reshetova@intel.com> - 2017-07-18 12:40 +0200 [PATCH 13/15] creds: convert cred.usage to refcount_t Elena Reshetova <elena.reshetova@intel.com> - 2017-07-18 12:40 +0200 [PATCH 10/15] uprobes: convert uprobe.ref to refcount_t Elena Reshetova <elena.reshetova@intel.com> - 2017-07-18 12:40 +0200 [PATCH 04/15] sched: convert numa_group.refcount to refcount_t Elena Reshetova <elena.reshetova@intel.com> - 2017-07-18 12:40 +0200 [PATCH 06/15] sched/task_struct: convert task_struct.stack_refcount to refcount_t Elena Reshetova <elena.reshetova@intel.com> - 2017-07-18 12:40 +0200 [PATCH 09/15] perf/ring_buffer: convert ring_buffer.aux_refcount to refcount_t Elena Reshetova <elena.reshetova@intel.com> - 2017-07-18 12:50 +0200 [PATCH 07/15] perf: convert perf_event_context.refcount to refcount_t Elena Reshetova <elena.reshetova@intel.com> - 2017-07-18 12:50 +0200 [PATCH 08/15] perf/ring_buffer: convert ring_buffer.refcount to refcount_t Elena Reshetova <elena.reshetova@intel.com> - 2017-07-18 12:50 +0200 [PATCH 05/15] sched/task_struct: convert task_struct.usage to refcount_t Elena Reshetova <elena.reshetova@intel.com> - 2017-07-18 12:50 +0200 [PATCH 02/15] sched: convert signal_struct.sigcnt to refcount_t Elena Reshetova <elena.reshetova@intel.com> - 2017-07-18 12:50 +0200 [PATCH 01/15] sched: convert sighand_struct.count to refcount_t Elena Reshetova <elena.reshetova@intel.com> - 2017-07-18 12:50 +0200
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