From: ebiederm@xmission.com (Eric W. Biederman)
To: <linux-kernel@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
x86@kernel.org
Subject: [REVIEW][PATCH 00/20] siginfo cleanups for x86
Date: Tue, 18 Sep 2018 02:03:04 +0200 [thread overview]
Message-ID: <87y3bzk6yv.fsf@xmission.com> (raw)
I have been slowly going thought and reworking the arch specific
functions that generate siginfo. The problems I have been addressing
is that using siginfo directly is error prone. Using siginfo directly
makes it easy to leave fields initialized, and get confused about
which fields need to be filled in.
To address this I have added a series of helper functions to
kernel/signal.c, that are specific to exactly one use of struct siginfo
and take the parameters they need.
To use these functions the x86 signal handling needs some cleanups but
the net result appears to be less code that is easier to follow.
If while looking over these patches you see anything please let me know.
I don't think I missed something but to err is human.
Likewise if you would like to merge these patches via the tip tree
let me know. Otherwise after the review is complete I plan on merging
these into my siginfo tree. At this point I believe all of the
prerequisite patches are merged so it should not make a difference.
Eric W. Biederman (20):
signal: Simplify tracehook_report_syscall_exit
signal/x86: Inline fill_sigtrap_info in it's only caller send_sigtrap
signal/x86: Move MCE error reporting out of force_sig_info_fault
signal/x86: Use send_sig_mceerr as apropriate
signal/x86: In trace_mpx_bounds_register_exception add __user annotations
signal/x86: Move mpx siginfo generation into do_bounds
signal/x86/traps: Factor out show_signal
signal/x86/traps: Move setting error_code and trap_nr into do_trap_no_signal
signal/x86/traps: Use force_sig_bnderr
signal/x86/traps: Use force_sig instead of open coding it.
signal/x86/traps: Simplify trap generation
signal/x86: Remove pkey parameter from bad_area_nosemaphore
signal/x86: Remove the pkey parameter from do_sigbus
signal/x86: Remove pkey parameter from mm_fault_error
signal/x86: Don't compute pkey in __do_page_fault
signal/x86: Pass pkey not vma into __bad_area
signal/x86: Call force_sig_pkuerr from __bad_area_nosemaphore
signal/x86: Replace force_sig_info_fault with force_sig_fault
signal/x86: Pass pkey by value
signal/x86: Use force_sig_fault where appropriate
arch/powerpc/include/asm/ptrace.h | 2 +-
arch/powerpc/kernel/traps.c | 7 +-
arch/x86/entry/vsyscall/vsyscall_64.c | 9 +-
arch/x86/include/asm/mpx.h | 13 ++-
arch/x86/include/asm/ptrace.h | 2 +-
arch/x86/include/asm/trace/mpx.h | 4 +-
arch/x86/kernel/ptrace.c | 29 ++----
arch/x86/kernel/traps.c | 175 ++++++++++++++--------------------
arch/x86/kernel/umip.c | 8 +-
arch/x86/kvm/mmu.c | 11 +--
arch/x86/mm/fault.c | 161 +++++++++++--------------------
arch/x86/mm/mpx.c | 30 ++----
include/linux/ptrace.h | 17 ++--
include/linux/tracehook.h | 13 +--
14 files changed, 175 insertions(+), 306 deletions(-)
Eric
next reply other threads:[~2018-09-18 0:03 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-18 0:03 Eric W. Biederman [this message]
2018-09-18 0:05 ` [REVIEW][PATCH 01/20] signal: Simplify tracehook_report_syscall_exit Eric W. Biederman
2018-09-18 20:15 ` Thomas Gleixner
2018-09-18 0:05 ` [REVIEW][PATCH 02/20] signal/x86: Inline fill_sigtrap_info in it's only caller send_sigtrap Eric W. Biederman
2018-09-18 20:16 ` Thomas Gleixner
2018-09-19 5:46 ` Christoph Hellwig
2018-09-19 6:46 ` Eric W. Biederman
2018-09-18 0:05 ` [REVIEW][PATCH 03/20] signal/x86: Move MCE error reporting out of force_sig_info_fault Eric W. Biederman
2018-09-18 20:19 ` Thomas Gleixner
2018-09-19 13:49 ` Eric W. Biederman
2018-09-18 0:05 ` [REVIEW][PATCH 04/20] signal/x86: Use send_sig_mceerr as apropriate Eric W. Biederman
2018-09-18 20:21 ` Thomas Gleixner
2018-10-01 13:04 ` Paolo Bonzini
2018-09-18 0:05 ` [REVIEW][PATCH 05/20] signal/x86: In trace_mpx_bounds_register_exception add __user annotations Eric W. Biederman
2018-09-18 20:22 ` Thomas Gleixner
2018-09-18 0:05 ` [REVIEW][PATCH 06/20] signal/x86: Move mpx siginfo generation into do_bounds Eric W. Biederman
2018-09-18 20:25 ` Thomas Gleixner
2018-09-19 5:48 ` Christoph Hellwig
2018-09-19 13:52 ` Eric W. Biederman
2018-09-18 0:05 ` [REVIEW][PATCH 07/20] signal/x86/traps: Factor out show_signal Eric W. Biederman
2018-09-18 20:28 ` Thomas Gleixner
2018-09-18 0:05 ` [REVIEW][PATCH 08/20] signal/x86/traps: Move setting error_code and trap_nr into do_trap_no_signal Eric W. Biederman
2018-09-18 20:33 ` Thomas Gleixner
2018-09-18 20:37 ` Thomas Gleixner
2018-09-21 12:45 ` Eric W. Biederman
2018-09-21 13:39 ` Eric W. Biederman
2018-09-18 0:05 ` [REVIEW][PATCH 09/20] signal/x86/traps: Use force_sig_bnderr Eric W. Biederman
2018-09-18 20:34 ` Thomas Gleixner
2018-09-18 0:05 ` [REVIEW][PATCH 10/20] signal/x86/traps: Use force_sig instead of open coding it Eric W. Biederman
2018-09-18 20:34 ` Thomas Gleixner
2018-09-18 0:05 ` [REVIEW][PATCH 11/20] signal/x86/traps: Simplify trap generation Eric W. Biederman
2018-09-18 20:37 ` Thomas Gleixner
2018-09-18 0:05 ` [REVIEW][PATCH 12/20] signal/x86: Remove pkey parameter from bad_area_nosemaphore Eric W. Biederman
2018-09-18 20:44 ` Thomas Gleixner
2018-09-19 16:33 ` Dave Hansen
2018-09-21 12:34 ` Eric W. Biederman
2018-09-18 0:05 ` [REVIEW][PATCH 13/20] signal/x86: Remove the pkey parameter from do_sigbus Eric W. Biederman
2018-09-18 20:45 ` Thomas Gleixner
2018-09-18 0:05 ` [REVIEW][PATCH 14/20] signal/x86: Remove pkey parameter from mm_fault_error Eric W. Biederman
2018-09-18 20:46 ` Thomas Gleixner
2018-09-18 0:05 ` [REVIEW][PATCH 15/20] signal/x86: Don't compute pkey in __do_page_fault Eric W. Biederman
2018-09-18 20:46 ` Thomas Gleixner
2018-09-18 0:05 ` [REVIEW][PATCH 16/20] signal/x86: Pass pkey not vma into __bad_area Eric W. Biederman
2018-09-18 20:48 ` Thomas Gleixner
2018-09-18 0:05 ` [REVIEW][PATCH 17/20] signal/x86: Call force_sig_pkuerr from __bad_area_nosemaphore Eric W. Biederman
2018-09-18 20:50 ` Thomas Gleixner
2018-09-18 0:05 ` [REVIEW][PATCH 18/20] signal/x86: Replace force_sig_info_fault with force_sig_fault Eric W. Biederman
2018-09-18 20:51 ` Thomas Gleixner
2018-09-18 0:05 ` [REVIEW][PATCH 19/20] signal/x86: Pass pkey by value Eric W. Biederman
2018-09-18 20:52 ` Thomas Gleixner
2018-09-18 0:05 ` [REVIEW][PATCH 20/20] signal/x86: Use force_sig_fault where appropriate Eric W. Biederman
2018-09-18 20:53 ` Thomas Gleixner
2018-09-18 20:55 ` [REVIEW][PATCH 00/20] siginfo cleanups for x86 Thomas Gleixner
2018-09-18 21:10 ` Eric W. Biederman
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