* [PATCH V2] perf arm64: Fix generate system call table failed with /tmp mounted with noexec
[not found] <1c6964d0-a7d2-83ef-16f2-bdf349e3f0af@gydle.com>
@ 2018-10-19 2:16 ` Hongxu Jia
2018-10-19 15:22 ` Sébastien Boisvert
0 siblings, 1 reply; 4+ messages in thread
From: Hongxu Jia @ 2018-10-19 2:16 UTC (permalink / raw)
To: linux-kernel, linux-perf-users
Cc: kim.phillips, brueckner, alexander.shishkin, jolsa, mpe, peterz,
ravi.bangoria, tmricht, acme, namhyung, hongxu.jia
When /tmp is mounted with noexec, mksyscalltbl fails.
[snip]
|perf-1.0/tools/perf/arch/arm64/entry/syscalls//mksyscalltbl:
/tmp/create-table-6VGPSt: Permission denied
[snip]
Add variable TMPDIR as prefix dir of the temporary file, if it is set,
replace default /tmp
Remove extra slash from `syscalls//mksyscalltbl'
Fixes: 2b5882435606 ("perf arm64: Generate system call table from asm/unistd.h")
Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
---
tools/perf/arch/arm64/Makefile | 2 +-
tools/perf/arch/arm64/entry/syscalls/mksyscalltbl | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/perf/arch/arm64/Makefile b/tools/perf/arch/arm64/Makefile
index dbef716..bc2a284 100644
--- a/tools/perf/arch/arm64/Makefile
+++ b/tools/perf/arch/arm64/Makefile
@@ -13,7 +13,7 @@ out := $(OUTPUT)arch/arm64/include/generated/asm
header := $(out)/syscalls.c
incpath := $(srctree)/tools
sysdef := $(srctree)/tools/arch/arm64/include/uapi/asm/unistd.h
-sysprf := $(srctree)/tools/perf/arch/arm64/entry/syscalls/
+sysprf := $(srctree)/tools/perf/arch/arm64/entry/syscalls
systbl := $(sysprf)/mksyscalltbl
# Create output directory if not already present
diff --git a/tools/perf/arch/arm64/entry/syscalls/mksyscalltbl b/tools/perf/arch/arm64/entry/syscalls/mksyscalltbl
index 2dbb8cad..c88fd32 100755
--- a/tools/perf/arch/arm64/entry/syscalls/mksyscalltbl
+++ b/tools/perf/arch/arm64/entry/syscalls/mksyscalltbl
@@ -23,7 +23,7 @@ create_table_from_c()
{
local sc nr last_sc
- create_table_exe=`mktemp /tmp/create-table-XXXXXX`
+ create_table_exe=`mktemp ${TMPDIR:-/tmp}/create-table-XXXXXX`
{
--
2.7.4
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH V2] perf arm64: Fix generate system call table failed with /tmp mounted with noexec
2018-10-19 2:16 ` [PATCH V2] perf arm64: Fix generate system call table failed with /tmp mounted with noexec Hongxu Jia
@ 2018-10-19 15:22 ` Sébastien Boisvert
2018-10-19 15:30 ` Arnaldo Carvalho de Melo
0 siblings, 1 reply; 4+ messages in thread
From: Sébastien Boisvert @ 2018-10-19 15:22 UTC (permalink / raw)
To: Hongxu Jia, linux-kernel, linux-perf-users
Cc: kim.phillips, brueckner, alexander.shishkin, jolsa, mpe, peterz,
ravi.bangoria, tmricht, acme, namhyung
On 2018-10-18 10:16 p.m., Hongxu Jia wrote:
> When /tmp is mounted with noexec, mksyscalltbl fails.
> [snip]
> |perf-1.0/tools/perf/arch/arm64/entry/syscalls//mksyscalltbl:
> /tmp/create-table-6VGPSt: Permission denied
> [snip]
>
> Add variable TMPDIR as prefix dir of the temporary file, if it is set,
> replace default /tmp
>
> Remove extra slash from `syscalls//mksyscalltbl'
>
> Fixes: 2b5882435606 ("perf arm64: Generate system call table from asm/unistd.h")
>
> Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
> ---
> tools/perf/arch/arm64/Makefile | 2 +-
> tools/perf/arch/arm64/entry/syscalls/mksyscalltbl | 2 +-
> 2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/tools/perf/arch/arm64/Makefile b/tools/perf/arch/arm64/Makefile
> index dbef716..bc2a284 100644
> --- a/tools/perf/arch/arm64/Makefile
> +++ b/tools/perf/arch/arm64/Makefile
> @@ -13,7 +13,7 @@ out := $(OUTPUT)arch/arm64/include/generated/asm
> header := $(out)/syscalls.c
> incpath := $(srctree)/tools
> sysdef := $(srctree)/tools/arch/arm64/include/uapi/asm/unistd.h
> -sysprf := $(srctree)/tools/perf/arch/arm64/entry/syscalls/
> +sysprf := $(srctree)/tools/perf/arch/arm64/entry/syscalls
Should this appear in different patch, since it is unrelated to adding TMPDIR support ?
Thanks
> systbl := $(sysprf)/mksyscalltbl
>
> # Create output directory if not already present
> diff --git a/tools/perf/arch/arm64/entry/syscalls/mksyscalltbl b/tools/perf/arch/arm64/entry/syscalls/mksyscalltbl
> index 2dbb8cad..c88fd32 100755
> --- a/tools/perf/arch/arm64/entry/syscalls/mksyscalltbl
> +++ b/tools/perf/arch/arm64/entry/syscalls/mksyscalltbl
> @@ -23,7 +23,7 @@ create_table_from_c()
> {
> local sc nr last_sc
>
> - create_table_exe=`mktemp /tmp/create-table-XXXXXX`
> + create_table_exe=`mktemp ${TMPDIR:-/tmp}/create-table-XXXXXX`
>
> {
>
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH V2] perf arm64: Fix generate system call table failed with /tmp mounted with noexec
2018-10-19 15:22 ` Sébastien Boisvert
@ 2018-10-19 15:30 ` Arnaldo Carvalho de Melo
2018-10-19 15:36 ` Hongxu Jia
0 siblings, 1 reply; 4+ messages in thread
From: Arnaldo Carvalho de Melo @ 2018-10-19 15:30 UTC (permalink / raw)
To: Sébastien Boisvert
Cc: Hongxu Jia, linux-kernel, linux-perf-users, kim.phillips,
brueckner, alexander.shishkin, jolsa, mpe, peterz, ravi.bangoria,
tmricht, namhyung
Em Fri, Oct 19, 2018 at 11:22:38AM -0400, Sébastien Boisvert escreveu:
>
>
> On 2018-10-18 10:16 p.m., Hongxu Jia wrote:
> > When /tmp is mounted with noexec, mksyscalltbl fails.
> > [snip]
> > |perf-1.0/tools/perf/arch/arm64/entry/syscalls//mksyscalltbl:
> > /tmp/create-table-6VGPSt: Permission denied
> > [snip]
> >
> > Add variable TMPDIR as prefix dir of the temporary file, if it is set,
> > replace default /tmp
> >
> > Remove extra slash from `syscalls//mksyscalltbl'
> >
> > Fixes: 2b5882435606 ("perf arm64: Generate system call table from asm/unistd.h")
> >
> > Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
> > ---
> > tools/perf/arch/arm64/Makefile | 2 +-
> > tools/perf/arch/arm64/entry/syscalls/mksyscalltbl | 2 +-
> > 2 files changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/tools/perf/arch/arm64/Makefile b/tools/perf/arch/arm64/Makefile
> > index dbef716..bc2a284 100644
> > --- a/tools/perf/arch/arm64/Makefile
> > +++ b/tools/perf/arch/arm64/Makefile
> > @@ -13,7 +13,7 @@ out := $(OUTPUT)arch/arm64/include/generated/asm
> > header := $(out)/syscalls.c
> > incpath := $(srctree)/tools
> > sysdef := $(srctree)/tools/arch/arm64/include/uapi/asm/unistd.h
> > -sysprf := $(srctree)/tools/perf/arch/arm64/entry/syscalls/
> > +sysprf := $(srctree)/tools/perf/arch/arm64/entry/syscalls
>
> Should this appear in different patch, since it is unrelated to adding TMPDIR support ?
Exactly.
So, to move forward, just send a new patch specifically for this part,
i.e. the removal of the harmless but unneeded extra slash, the other
part I already took care of.
- Arnaldo
> Thanks
>
> > systbl := $(sysprf)/mksyscalltbl
> >
> > # Create output directory if not already present
> > diff --git a/tools/perf/arch/arm64/entry/syscalls/mksyscalltbl b/tools/perf/arch/arm64/entry/syscalls/mksyscalltbl
> > index 2dbb8cad..c88fd32 100755
> > --- a/tools/perf/arch/arm64/entry/syscalls/mksyscalltbl
> > +++ b/tools/perf/arch/arm64/entry/syscalls/mksyscalltbl
> > @@ -23,7 +23,7 @@ create_table_from_c()
> > {
> > local sc nr last_sc
> >
> > - create_table_exe=`mktemp /tmp/create-table-XXXXXX`
> > + create_table_exe=`mktemp ${TMPDIR:-/tmp}/create-table-XXXXXX`
> >
> > {
> >
> >
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH V2] perf arm64: Fix generate system call table failed with /tmp mounted with noexec
2018-10-19 15:30 ` Arnaldo Carvalho de Melo
@ 2018-10-19 15:36 ` Hongxu Jia
0 siblings, 0 replies; 4+ messages in thread
From: Hongxu Jia @ 2018-10-19 15:36 UTC (permalink / raw)
To: Arnaldo Carvalho de Melo, Sébastien Boisvert
Cc: linux-kernel, linux-perf-users, kim.phillips, brueckner,
alexander.shishkin, jolsa, mpe, peterz, ravi.bangoria, tmricht,
namhyung
On 2018/10/19 下午11:30, Arnaldo Carvalho de Melo wrote:
> Exactly.
>
> So, to move forward, just send a new patch specifically for this part,
> i.e. the removal of the harmless but unneeded extra slash, the other
> part I already took care of.
Got it, I will send a new patch for the removal of the harmless
Thank a huge for all your guys to help me to improve commit message.
//Hongxu
>
> - Arnaldo
>
^ permalink raw reply [flat|nested] 4+ messages in thread
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2018-10-19 2:16 ` [PATCH V2] perf arm64: Fix generate system call table failed with /tmp mounted with noexec Hongxu Jia
2018-10-19 15:22 ` Sébastien Boisvert
2018-10-19 15:30 ` Arnaldo Carvalho de Melo
2018-10-19 15:36 ` Hongxu Jia
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