From: Kees Cook <keescook@chromium.org> To: Jann Horn <jannh@google.com> Cc: Andrea Arcangeli <aarcange@redhat.com>, Giuseppe Scrivano <gscrivan@redhat.com>, Valentin Rothberg <vrothber@redhat.com>, YiFei Zhu <yifeifz2@illinois.edu>, Linux Containers <containers@lists.linux-foundation.org>, Tobin Feldman-Fitzthum <tobin@ibm.com>, kernel list <linux-kernel@vger.kernel.org>, Andy Lutomirski <luto@amacapital.net>, Hubertus Franke <frankeh@us.ibm.com>, David Laight <David.Laight@aculab.com>, Jack Chen <jianyan2@illinois.edu>, Dimitrios Skarlatos <dskarlat@cs.cmu.edu>, Josep Torrellas <torrella@illinois.edu>, Will Drewry <wad@chromium.org>, bpf <bpf@vger.kernel.org>, Tianyin Xu <tyxu@illinois.edu> Subject: Re: [PATCH v3 seccomp 5/5] seccomp/cache: Report cache data through /proc/pid/seccomp_cache Date: Wed, 30 Sep 2020 16:12:24 -0700 [thread overview] Message-ID: <202009301559.49BEDB79D@keescook> (raw) In-Reply-To: <CAG48ez0whaSTobwnoJHW+Eyqg5a8H4JCO-KHrgsuNiEg0qbD3w@mail.gmail.com> On Thu, Oct 01, 2020 at 12:00:46AM +0200, Jann Horn wrote: > On Wed, Sep 30, 2020 at 5:20 PM YiFei Zhu <zhuyifei1999@gmail.com> wrote: > [...] > > diff --git a/kernel/seccomp.c b/kernel/seccomp.c > [...] > > +int proc_pid_seccomp_cache(struct seq_file *m, struct pid_namespace *ns, > > + struct pid *pid, struct task_struct *task) > > +{ > > + struct seccomp_filter *f; > > + > > + /* > > + * We don't want some sandboxed process know what their seccomp > > + * filters consist of. > > + */ > > + if (!file_ns_capable(m->file, &init_user_ns, CAP_SYS_ADMIN)) > > + return -EACCES; > > + > > + f = READ_ONCE(task->seccomp.filter); > > + if (!f) > > + return 0; > > Hmm, this won't work, because the task could be exiting, and seccomp > filters are detached in release_task() (using > seccomp_filter_release()). And at the moment, seccomp_filter_release() > just locklessly NULLs out the tsk->seccomp.filter pointer and drops > the reference. Oh nice catch. Yeah, this would only happen if it was the only filter remaining on a process with no children, etc. > > The locking here is kind of gross, but basically I think you can > change this code to use lock_task_sighand() / unlock_task_sighand() > (see the other examples in fs/proc/base.c), and bail out if > lock_task_sighand() returns NULL. And in seccomp_filter_release(), add > something like this: > > /* We are effectively holding the siglock by not having any sighand. */ > WARN_ON(tsk->sighand != NULL); Yeah, good idea. -- Kees Cook _______________________________________________ Containers mailing list Containers@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/containers
WARNING: multiple messages have this Message-ID (diff)
From: Kees Cook <keescook@chromium.org> To: Jann Horn <jannh@google.com> Cc: YiFei Zhu <zhuyifei1999@gmail.com>, Linux Containers <containers@lists.linux-foundation.org>, YiFei Zhu <yifeifz2@illinois.edu>, bpf <bpf@vger.kernel.org>, kernel list <linux-kernel@vger.kernel.org>, Aleksa Sarai <cyphar@cyphar.com>, Andrea Arcangeli <aarcange@redhat.com>, Andy Lutomirski <luto@amacapital.net>, David Laight <David.Laight@aculab.com>, Dimitrios Skarlatos <dskarlat@cs.cmu.edu>, Giuseppe Scrivano <gscrivan@redhat.com>, Hubertus Franke <frankeh@us.ibm.com>, Jack Chen <jianyan2@illinois.edu>, Josep Torrellas <torrella@illinois.edu>, Tianyin Xu <tyxu@illinois.edu>, Tobin Feldman-Fitzthum <tobin@ibm.com>, Tycho Andersen <tycho@tycho.pizza>, Valentin Rothberg <vrothber@redhat.com>, Will Drewry <wad@chromium.org> Subject: Re: [PATCH v3 seccomp 5/5] seccomp/cache: Report cache data through /proc/pid/seccomp_cache Date: Wed, 30 Sep 2020 16:12:24 -0700 [thread overview] Message-ID: <202009301559.49BEDB79D@keescook> (raw) In-Reply-To: <CAG48ez0whaSTobwnoJHW+Eyqg5a8H4JCO-KHrgsuNiEg0qbD3w@mail.gmail.com> On Thu, Oct 01, 2020 at 12:00:46AM +0200, Jann Horn wrote: > On Wed, Sep 30, 2020 at 5:20 PM YiFei Zhu <zhuyifei1999@gmail.com> wrote: > [...] > > diff --git a/kernel/seccomp.c b/kernel/seccomp.c > [...] > > +int proc_pid_seccomp_cache(struct seq_file *m, struct pid_namespace *ns, > > + struct pid *pid, struct task_struct *task) > > +{ > > + struct seccomp_filter *f; > > + > > + /* > > + * We don't want some sandboxed process know what their seccomp > > + * filters consist of. > > + */ > > + if (!file_ns_capable(m->file, &init_user_ns, CAP_SYS_ADMIN)) > > + return -EACCES; > > + > > + f = READ_ONCE(task->seccomp.filter); > > + if (!f) > > + return 0; > > Hmm, this won't work, because the task could be exiting, and seccomp > filters are detached in release_task() (using > seccomp_filter_release()). And at the moment, seccomp_filter_release() > just locklessly NULLs out the tsk->seccomp.filter pointer and drops > the reference. Oh nice catch. Yeah, this would only happen if it was the only filter remaining on a process with no children, etc. > > The locking here is kind of gross, but basically I think you can > change this code to use lock_task_sighand() / unlock_task_sighand() > (see the other examples in fs/proc/base.c), and bail out if > lock_task_sighand() returns NULL. And in seccomp_filter_release(), add > something like this: > > /* We are effectively holding the siglock by not having any sighand. */ > WARN_ON(tsk->sighand != NULL); Yeah, good idea. -- Kees Cook
next prev parent reply other threads:[~2020-09-30 23:12 UTC|newest] Thread overview: 302+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-09-21 5:35 [RFC PATCH seccomp 0/2] seccomp: Add bitmap cache of arg-independent filter results that allow syscalls YiFei Zhu 2020-09-21 5:35 ` YiFei Zhu 2020-09-21 5:35 ` [RFC PATCH seccomp 1/2] seccomp/cache: Add "emulator" to check if filter is arg-dependent YiFei Zhu 2020-09-21 5:35 ` YiFei Zhu 2020-09-21 17:47 ` Jann Horn via Containers 2020-09-21 17:47 ` Jann Horn 2020-09-21 18:38 ` Jann Horn via Containers 2020-09-21 18:38 ` Jann Horn 2020-09-21 23:44 ` YiFei Zhu 2020-09-21 23:44 ` YiFei Zhu 2020-09-22 0:25 ` Jann Horn via Containers 2020-09-22 0:25 ` Jann Horn 2020-09-22 0:47 ` YiFei Zhu 2020-09-22 0:47 ` YiFei Zhu 2020-09-21 5:35 ` [RFC PATCH seccomp 2/2] seccomp/cache: Cache filter results that allow syscalls YiFei Zhu 2020-09-21 5:35 ` YiFei Zhu 2020-09-21 18:08 ` Jann Horn via Containers 2020-09-21 18:08 ` Jann Horn 2020-09-21 22:50 ` YiFei Zhu 2020-09-21 22:50 ` YiFei Zhu 2020-09-21 22:57 ` Jann Horn via Containers 2020-09-21 22:57 ` Jann Horn 2020-09-21 23:08 ` YiFei Zhu 2020-09-21 23:08 ` YiFei Zhu 2020-09-25 0:01 ` [PATCH v2 seccomp 2/6] asm/syscall.h: Add syscall_arches[] array Kees Cook 2020-09-25 0:01 ` Kees Cook 2020-09-25 0:15 ` Jann Horn via Containers 2020-09-25 0:15 ` Jann Horn 2020-09-25 0:18 ` Al Viro 2020-09-25 0:18 ` Al Viro 2020-09-25 0:24 ` Jann Horn via Containers 2020-09-25 0:24 ` Jann Horn 2020-09-25 1:27 ` YiFei Zhu 2020-09-25 1:27 ` YiFei Zhu 2020-09-25 3:09 ` Kees Cook 2020-09-25 3:09 ` Kees Cook 2020-09-25 3:28 ` YiFei Zhu 2020-09-25 3:28 ` YiFei Zhu 2020-09-25 16:39 ` YiFei Zhu 2020-09-25 16:39 ` YiFei Zhu 2020-09-21 5:48 ` [RFC PATCH seccomp 0/2] seccomp: Add bitmap cache of arg-independent filter results that allow syscalls Sargun Dhillon 2020-09-21 5:48 ` Sargun Dhillon 2020-09-21 7:13 ` YiFei Zhu 2020-09-21 7:13 ` YiFei Zhu 2020-09-21 8:30 ` Christian Brauner 2020-09-21 8:30 ` Christian Brauner 2020-09-21 8:44 ` YiFei Zhu 2020-09-21 8:44 ` YiFei Zhu 2020-09-21 13:51 ` Tycho Andersen 2020-09-21 13:51 ` Tycho Andersen 2020-09-21 15:27 ` YiFei Zhu 2020-09-21 15:27 ` YiFei Zhu 2020-09-21 16:39 ` Tycho Andersen 2020-09-21 16:39 ` Tycho Andersen 2020-09-21 22:57 ` YiFei Zhu 2020-09-21 22:57 ` YiFei Zhu 2020-09-21 19:16 ` Jann Horn via Containers 2020-09-21 19:16 ` Jann Horn 2020-09-21 19:35 ` Hubertus Franke 2020-09-21 19:45 ` Jann Horn via Containers 2020-09-21 19:45 ` Jann Horn 2020-09-23 19:26 ` Kees Cook 2020-09-23 19:26 ` Kees Cook 2020-09-23 22:54 ` YiFei Zhu 2020-09-23 22:54 ` YiFei Zhu 2020-09-24 6:52 ` Kees Cook 2020-09-24 6:52 ` Kees Cook 2020-09-24 12:06 ` [PATCH seccomp 0/6] " YiFei Zhu 2020-09-24 12:06 ` YiFei Zhu 2020-09-24 12:06 ` [PATCH seccomp 1/6] seccomp: Move config option SECCOMP to arch/Kconfig YiFei Zhu 2020-09-24 12:06 ` YiFei Zhu 2020-09-24 12:06 ` YiFei Zhu 2020-09-24 12:06 ` YiFei Zhu 2020-09-24 12:06 ` [PATCH seccomp 2/6] asm/syscall.h: Add syscall_arches[] array YiFei Zhu 2020-09-24 12:06 ` YiFei Zhu 2020-09-24 12:06 ` [PATCH seccomp 3/6] seccomp/cache: Add "emulator" to check if filter is arg-dependent YiFei Zhu 2020-09-24 12:06 ` YiFei Zhu 2020-09-24 12:06 ` [PATCH seccomp 4/6] seccomp/cache: Lookup syscall allowlist for fast path YiFei Zhu 2020-09-24 12:06 ` YiFei Zhu 2020-09-24 12:06 ` [PATCH seccomp 5/6] selftests/seccomp: Compare bitmap vs filter overhead YiFei Zhu 2020-09-24 12:06 ` YiFei Zhu 2020-09-24 12:06 ` [PATCH seccomp 6/6] seccomp/cache: Report cache data through /proc/pid/seccomp_cache YiFei Zhu 2020-09-24 12:06 ` YiFei Zhu 2020-09-24 12:44 ` [PATCH v2 seccomp 0/6] seccomp: Add bitmap cache of arg-independent filter results that allow syscalls YiFei Zhu 2020-09-24 12:44 ` YiFei Zhu 2020-09-24 12:44 ` [PATCH v2 seccomp 1/6] seccomp: Move config option SECCOMP to arch/Kconfig YiFei Zhu 2020-09-24 12:44 ` YiFei Zhu 2020-09-24 19:11 ` Kees Cook 2020-09-24 19:11 ` Kees Cook 2020-10-27 9:52 ` Geert Uytterhoeven 2020-10-27 9:52 ` Geert Uytterhoeven 2020-10-27 19:08 ` YiFei Zhu 2020-10-27 19:08 ` YiFei Zhu 2020-10-28 0:06 ` Kees Cook 2020-10-28 0:06 ` Kees Cook 2020-10-28 8:18 ` Geert Uytterhoeven 2020-10-28 8:18 ` Geert Uytterhoeven 2020-10-28 9:34 ` Jann Horn via Containers 2020-10-28 9:34 ` Jann Horn 2020-09-24 12:44 ` [PATCH v2 seccomp 2/6] asm/syscall.h: Add syscall_arches[] array YiFei Zhu 2020-09-24 12:44 ` YiFei Zhu 2020-09-24 13:47 ` David Laight 2020-09-24 13:47 ` David Laight 2020-09-24 14:16 ` YiFei Zhu 2020-09-24 14:16 ` YiFei Zhu 2020-09-24 14:20 ` David Laight 2020-09-24 14:20 ` David Laight 2020-09-24 14:37 ` YiFei Zhu 2020-09-24 14:37 ` YiFei Zhu 2020-09-24 16:02 ` YiFei Zhu 2020-09-24 16:02 ` YiFei Zhu 2020-09-24 12:44 ` [PATCH v2 seccomp 3/6] seccomp/cache: Add "emulator" to check if filter is arg-dependent YiFei Zhu 2020-09-24 12:44 ` YiFei Zhu 2020-09-24 23:25 ` Kees Cook 2020-09-24 23:25 ` Kees Cook 2020-09-25 3:04 ` YiFei Zhu 2020-09-25 3:04 ` YiFei Zhu 2020-09-25 16:45 ` YiFei Zhu 2020-09-25 16:45 ` YiFei Zhu 2020-09-25 19:42 ` Kees Cook 2020-09-25 19:42 ` Kees Cook 2020-09-25 19:51 ` Andy Lutomirski 2020-09-25 19:51 ` Andy Lutomirski 2020-09-25 20:37 ` Kees Cook 2020-09-25 20:37 ` Kees Cook 2020-09-25 21:07 ` Andy Lutomirski 2020-09-25 21:07 ` Andy Lutomirski 2020-09-25 23:49 ` Kees Cook 2020-09-25 23:49 ` Kees Cook 2020-09-26 0:34 ` Andy Lutomirski 2020-09-26 0:34 ` Andy Lutomirski 2020-09-26 1:23 ` YiFei Zhu 2020-09-26 1:23 ` YiFei Zhu 2020-09-26 2:47 ` Andy Lutomirski 2020-09-26 2:47 ` Andy Lutomirski 2020-09-26 4:35 ` Kees Cook 2020-09-26 4:35 ` Kees Cook 2020-09-24 12:44 ` [PATCH v2 seccomp 4/6] seccomp/cache: Lookup syscall allowlist for fast path YiFei Zhu 2020-09-24 12:44 ` YiFei Zhu 2020-09-24 23:46 ` Kees Cook 2020-09-24 23:46 ` Kees Cook 2020-09-25 1:55 ` YiFei Zhu 2020-09-25 1:55 ` YiFei Zhu 2020-09-24 12:44 ` [PATCH v2 seccomp 5/6] selftests/seccomp: Compare bitmap vs filter overhead YiFei Zhu 2020-09-24 12:44 ` YiFei Zhu 2020-09-24 23:47 ` Kees Cook 2020-09-24 23:47 ` Kees Cook 2020-09-25 1:35 ` YiFei Zhu 2020-09-25 1:35 ` YiFei Zhu 2020-09-24 12:44 ` [PATCH v2 seccomp 6/6] seccomp/cache: Report cache data through /proc/pid/seccomp_cache YiFei Zhu 2020-09-24 12:44 ` YiFei Zhu 2020-09-24 23:56 ` Kees Cook 2020-09-24 23:56 ` Kees Cook 2020-09-25 3:11 ` YiFei Zhu 2020-09-25 3:11 ` YiFei Zhu 2020-09-25 3:26 ` Kees Cook 2020-09-25 3:26 ` Kees Cook 2020-09-30 15:19 ` [PATCH v3 seccomp 0/5] seccomp: Add bitmap cache of constant allow filter results YiFei Zhu 2020-09-30 15:19 ` YiFei Zhu 2020-09-30 15:19 ` [PATCH v3 seccomp 1/5] x86: Enable seccomp architecture tracking YiFei Zhu 2020-09-30 15:19 ` YiFei Zhu 2020-09-30 21:21 ` Kees Cook 2020-09-30 21:21 ` Kees Cook 2020-09-30 21:33 ` Jann Horn via Containers 2020-09-30 21:33 ` Jann Horn 2020-09-30 22:53 ` Kees Cook 2020-09-30 22:53 ` Kees Cook 2020-09-30 23:15 ` Jann Horn via Containers 2020-09-30 23:15 ` Jann Horn 2020-09-30 15:19 ` [PATCH v3 seccomp 2/5] seccomp/cache: Add "emulator" to check if filter is constant allow YiFei Zhu 2020-09-30 15:19 ` YiFei Zhu 2020-09-30 22:24 ` Jann Horn via Containers 2020-09-30 22:24 ` Jann Horn 2020-09-30 22:49 ` Kees Cook 2020-09-30 22:49 ` Kees Cook 2020-10-01 11:28 ` YiFei Zhu 2020-10-01 11:28 ` YiFei Zhu 2020-10-01 21:08 ` Jann Horn via Containers 2020-10-01 21:08 ` Jann Horn 2020-09-30 22:40 ` Kees Cook 2020-09-30 22:40 ` Kees Cook 2020-10-01 11:52 ` YiFei Zhu 2020-10-01 11:52 ` YiFei Zhu 2020-10-01 21:05 ` Kees Cook 2020-10-01 21:05 ` Kees Cook 2020-10-02 11:08 ` YiFei Zhu 2020-10-02 11:08 ` YiFei Zhu 2020-10-09 4:47 ` YiFei Zhu 2020-10-09 4:47 ` YiFei Zhu 2020-10-09 5:41 ` Kees Cook 2020-10-09 5:41 ` Kees Cook 2020-09-30 15:19 ` [PATCH v3 seccomp 3/5] seccomp/cache: Lookup syscall allowlist for fast path YiFei Zhu 2020-09-30 15:19 ` YiFei Zhu 2020-09-30 21:32 ` Kees Cook 2020-09-30 21:32 ` Kees Cook 2020-10-09 0:17 ` YiFei Zhu 2020-10-09 0:17 ` YiFei Zhu 2020-10-09 5:35 ` Kees Cook 2020-10-09 5:35 ` Kees Cook 2020-09-30 15:19 ` [PATCH v3 seccomp 4/5] selftests/seccomp: Compare bitmap vs filter overhead YiFei Zhu 2020-09-30 15:19 ` YiFei Zhu 2020-09-30 15:19 ` [PATCH v3 seccomp 5/5] seccomp/cache: Report cache data through /proc/pid/seccomp_cache YiFei Zhu 2020-09-30 15:19 ` YiFei Zhu 2020-09-30 22:00 ` Jann Horn via Containers 2020-09-30 22:00 ` Jann Horn 2020-09-30 23:12 ` Kees Cook [this message] 2020-09-30 23:12 ` Kees Cook 2020-10-01 12:06 ` YiFei Zhu 2020-10-01 12:06 ` YiFei Zhu 2020-10-01 16:05 ` Jann Horn via Containers 2020-10-01 16:05 ` Jann Horn 2020-10-01 16:18 ` YiFei Zhu 2020-10-01 16:18 ` YiFei Zhu 2020-09-30 22:59 ` Kees Cook 2020-09-30 22:59 ` Kees Cook 2020-09-30 23:08 ` Jann Horn via Containers 2020-09-30 23:08 ` Jann Horn 2020-09-30 23:21 ` Kees Cook 2020-09-30 23:21 ` Kees Cook 2020-10-09 17:14 ` [PATCH v4 seccomp 0/5] seccomp: Add bitmap cache of constant allow filter results YiFei Zhu 2020-10-09 17:14 ` YiFei Zhu 2020-10-09 17:14 ` [PATCH v4 seccomp 1/5] seccomp/cache: Lookup syscall allowlist bitmap for fast path YiFei Zhu 2020-10-09 17:14 ` YiFei Zhu 2020-10-09 21:30 ` Jann Horn via Containers 2020-10-09 21:30 ` Jann Horn 2020-10-09 23:18 ` Kees Cook 2020-10-09 23:18 ` Kees Cook 2020-10-09 17:14 ` [PATCH v4 seccomp 2/5] seccomp/cache: Add "emulator" to check if filter is constant allow YiFei Zhu 2020-10-09 17:14 ` YiFei Zhu 2020-10-09 21:30 ` Jann Horn via Containers 2020-10-09 21:30 ` Jann Horn 2020-10-09 22:47 ` Kees Cook 2020-10-09 22:47 ` Kees Cook 2020-10-09 17:14 ` [PATCH v4 seccomp 3/5] x86: Enable seccomp architecture tracking YiFei Zhu 2020-10-09 17:14 ` YiFei Zhu 2020-10-09 17:25 ` Andy Lutomirski 2020-10-09 17:25 ` Andy Lutomirski 2020-10-09 18:32 ` YiFei Zhu 2020-10-09 18:32 ` YiFei Zhu 2020-10-09 20:59 ` Andy Lutomirski 2020-10-09 20:59 ` Andy Lutomirski 2020-10-09 17:14 ` [PATCH v4 seccomp 4/5] selftests/seccomp: Compare bitmap vs filter overhead YiFei Zhu 2020-10-09 17:14 ` YiFei Zhu 2020-10-09 17:14 ` [PATCH v4 seccomp 5/5] seccomp/cache: Report cache data through /proc/pid/seccomp_cache YiFei Zhu 2020-10-09 17:14 ` YiFei Zhu 2020-10-09 21:24 ` kernel test robot 2020-10-09 21:24 ` kernel test robot 2020-10-09 21:24 ` kernel test robot 2020-10-09 21:45 ` Jann Horn via Containers 2020-10-09 21:45 ` Jann Horn 2020-10-09 23:14 ` Kees Cook 2020-10-09 23:14 ` Kees Cook 2020-10-10 13:26 ` YiFei Zhu 2020-10-10 13:26 ` YiFei Zhu 2020-10-12 22:57 ` Kees Cook 2020-10-12 22:57 ` Kees Cook 2020-10-13 0:31 ` YiFei Zhu 2020-10-13 0:31 ` YiFei Zhu 2020-10-22 20:52 ` YiFei Zhu 2020-10-22 20:52 ` YiFei Zhu 2020-10-22 22:32 ` Kees Cook 2020-10-22 22:32 ` Kees Cook 2020-10-22 23:40 ` YiFei Zhu 2020-10-22 23:40 ` YiFei Zhu 2020-10-24 2:51 ` Kees Cook 2020-10-24 2:51 ` Kees Cook 2020-10-30 12:18 ` YiFei Zhu 2020-10-30 12:18 ` YiFei Zhu 2020-11-03 13:00 ` YiFei Zhu 2020-11-03 13:00 ` YiFei Zhu 2020-11-04 0:29 ` Kees Cook 2020-11-04 0:29 ` Kees Cook 2020-11-04 11:40 ` YiFei Zhu 2020-11-04 11:40 ` YiFei Zhu 2020-11-04 18:57 ` Kees Cook 2020-11-04 18:57 ` Kees Cook 2020-10-11 15:47 ` [PATCH v5 seccomp 0/5]seccomp: Add bitmap cache of constant allow filter results YiFei Zhu 2020-10-11 15:47 ` YiFei Zhu 2020-10-11 15:47 ` [PATCH v5 seccomp 1/5] seccomp/cache: Lookup syscall allowlist bitmap for fast path YiFei Zhu 2020-10-11 15:47 ` YiFei Zhu 2020-10-12 6:42 ` Jann Horn via Containers 2020-10-12 6:42 ` Jann Horn 2020-10-11 15:47 ` [PATCH v5 seccomp 2/5] seccomp/cache: Add "emulator" to check if filter is constant allow YiFei Zhu 2020-10-11 15:47 ` YiFei Zhu 2020-10-12 6:46 ` Jann Horn via Containers 2020-10-12 6:46 ` Jann Horn 2020-10-11 15:47 ` [PATCH v5 seccomp 3/5] x86: Enable seccomp architecture tracking YiFei Zhu 2020-10-11 15:47 ` YiFei Zhu 2020-10-11 15:47 ` [PATCH v5 seccomp 4/5] selftests/seccomp: Compare bitmap vs filter overhead YiFei Zhu 2020-10-11 15:47 ` YiFei Zhu 2020-10-11 15:47 ` [PATCH v5 seccomp 5/5] seccomp/cache: Report cache data through /proc/pid/seccomp_cache YiFei Zhu 2020-10-11 15:47 ` YiFei Zhu 2020-10-12 6:49 ` Jann Horn via Containers 2020-10-12 6:49 ` Jann Horn 2020-12-17 12:14 ` Geert Uytterhoeven 2020-12-17 12:14 ` Geert Uytterhoeven 2020-12-17 18:34 ` YiFei Zhu 2020-12-17 18:34 ` YiFei Zhu 2020-12-18 12:35 ` Geert Uytterhoeven 2020-12-18 12:35 ` Geert Uytterhoeven 2020-10-27 19:14 ` [PATCH v5 seccomp 0/5]seccomp: Add bitmap cache of constant allow filter results Kees Cook 2020-10-27 19:14 ` Kees Cook
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