Srikar Dronamraju writes:
> * Michael Ellerman [2020-09-11 21:55:23]:
>
>> Srikar Dronamraju writes:
>> > Current code assumes that cpumask of cpus sharing a l2-cache mask will
>> > always be a superset of cpu_sibling_mask.
>> >
>> > Lets stop that assumption. cpu_l2_cache_mask is a superset of
"Aneesh Kumar K.V" writes:
> Signed-off-by: Aneesh Kumar K.V
> ---
> arch/powerpc/mm/book3s64/pkeys.c | 7 ++-
> 1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/mm/book3s64/pkeys.c
> b/arch/powerpc/mm/book3s64/pkeys.c
> index 391230f93da2..16ea0b2f0ea5 100644
>
The __NR_mknod syscall doesn't exist on arm64 (only __NR_mknodat).
Switch to the modern syscall.
Fixes: ad5682184a81 ("selftests/seccomp: Check for EPOLLHUP for user_notif")
Signed-off-by: Kees Cook
---
tools/testing/selftests/seccomp/seccomp_bpf.c | 2 +-
1 file changed, 1 insertion(+), 1 delet
As the UAPI headers start to appear in distros, we need to avoid
outdated versions of struct clone_args to be able to test modern
features. Additionally pull in the syscall numbers correctly.
Signed-off-by: Kees Cook
---
I needed to fix this to get MIPS to build the seccomp selftests.
---
.../te
Instead of special-casing the specific case of shared registers, create
a default SYSCALL_RET_SET() macro (mirroring SYSCALL_NUM_SET()), that
writes to the SYSCALL_RET register. For architectures that can't set the
return value (for whatever reason), they can define SYSCALL_RET_SET()
without an ass
Some archs (like ppc) only support changing the return code during
syscall exit when ptrace is used. As the syscall number might not
be available anymore during syscall exit, it needs to be saved
during syscall enter. Adjust the ptrace tests to do this.
Reported-by: Thadeu Lima de Souza Cascardo
On powerpc, the errno is not inverted, and depends on ccr.so being
set. Add this to a powerpc definition of SYSCALL_RET_SET().
Co-developed-by: Thadeu Lima de Souza Cascardo
Signed-off-by: Thadeu Lima de Souza Cascardo
Link:
https://lore.kernel.org/linux-kselftest/20200911181012.171027-1-casca.
When none of the registers have changed, don't flush them back. This can
happen if the architecture uses a non-register way to change the syscall
(e.g. arm64) , and a return value hasn't been written.
Signed-off-by: Kees Cook
---
tools/testing/selftests/seccomp/seccomp_bpf.c | 6 --
1 file c
Consolidate the REGSET logic into the new ARCH_GETREG() and
ARCH_SETREG() macros, avoiding more #ifdef code in function bodies.
Signed-off-by: Kees Cook
---
tools/testing/selftests/seccomp/seccomp_bpf.c | 42 +++
1 file changed, 15 insertions(+), 27 deletions(-)
diff --git a/too
Instead of special-casing the get/set-registers routines, move the
HAVE_GETREG logic into the new ARCH_GETREG() and ARCH_SETREG() macros.
Signed-off-by: Kees Cook
---
tools/testing/selftests/seccomp/seccomp_bpf.c | 27 ++-
1 file changed, 15 insertions(+), 12 deletions(-)
diff -
With all architectures now using the common SYSCALL_NUM_SET() macro, the
arch-specific #ifdef can be removed from change_syscall() itself.
Signed-off-by: Kees Cook
---
tools/testing/selftests/seccomp/seccomp_bpf.c | 16 +++-
1 file changed, 3 insertions(+), 13 deletions(-)
diff --gi
Instead of having the mips O32 macro special-cased, pull the logic into
the SYSCALL_NUM() macro. Additionally include the ABI headers, since
these appear to have been missing, leaving __NR_O32_Linux undefined.
Signed-off-by: Kees Cook
---
tools/testing/selftests/seccomp/seccomp_bpf.c | 18 ++
Remove the arm64 special-case in change_syscall().
Signed-off-by: Kees Cook
---
tools/testing/selftests/seccomp/seccomp_bpf.c | 27 +--
1 file changed, 13 insertions(+), 14 deletions(-)
diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c
b/tools/testing/selftests/seccomp
Remove the arm special-case in change_syscall().
Signed-off-by: Kees Cook
---
tools/testing/selftests/seccomp/seccomp_bpf.c | 16 ++--
1 file changed, 6 insertions(+), 10 deletions(-)
diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c
b/tools/testing/selftests/seccomp/secco
In order to avoid "#ifdef"s in the main function bodies, create a new
macro, SYSCALL_NUM_SET(), where arch-specific logic can live.
Signed-off-by: Kees Cook
---
tools/testing/selftests/seccomp/seccomp_bpf.c | 15 +--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/tool
Hi,
This refactors the seccomp selftest macros used in change_syscall(),
in an effort to remove special cases for mips, arm, arm64, and xtensa,
which paves the way for powerpc fixes.
I'm not entirely done testing, but all-arch build tests and x86_64
selftests pass. I'll be doing arm, arm64, and i
To avoid an xtensa special-case, refactor all arch register macros to
take the register variable instead of depending on the macro expanding
as a struct member name.
Signed-off-by: Kees Cook
---
tools/testing/selftests/seccomp/seccomp_bpf.c | 97 +--
1 file changed, 47 insertions
Remove the mips special-case in change_syscall().
Signed-off-by: Kees Cook
---
tools/testing/selftests/seccomp/seccomp_bpf.c | 17 +
1 file changed, 9 insertions(+), 8 deletions(-)
diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c
b/tools/testing/selftests/seccomp/secc
Ira Weiny writes:
> On Sat, Sep 12, 2020 at 01:36:46AM +0530, Vaibhav Jain wrote:
>> Thanks for reviewing this patch Ira,
>>
>>
>> Ira Weiny writes:
>>
>> > On Thu, Sep 10, 2020 at 02:52:12PM +0530, Vaibhav Jain wrote:
>> >> A warning is reported by the kernel in case perf_stats_show() return
A warning is reported by the kernel in case perf_stats_show() returns
an error code. The warning is of the form below:
papr_scm ibm,persistent-memory:ibm,pmemory@4411:
Failed to query performance stats, Err:-10
dev_attr_show: perf_stats_show+0x0/0x1c0 [papr_scm] returned bad count
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