20 Sep, 2016
1 commit
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Move prctl tests from Documentation/prctl to selftests/prctl.
Remove prctl from Makefile to move the test. Update prctl Makefile to work
under selftests. prctl will not be run as part of selftests suite and will
not be included in install targets. They can be built separately for now.Acked-by: Jonathan Corbet
Signed-off-by: Shuah Khan
18 Feb, 2016
1 commit
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Signed int - unsigned int comparison fixed in mpssd, prctl, ptp, and
timers in Documentation. In places where 'int argc' and 'const char
**argv' are not used, they are replaced with voidDocumentation/mic/mpssd/mpssd.c: Fixed comparison in sum_iovec_len and
disp_iovecDocumentation/prctl/disable-tsc-ctxt-sw-stress-test.c: main signature
changed to void, as parameters 'argc' and 'argv' are never usedDocumentation/prctl/disable-tsc-on-off-stress-test.c: main signature
changed to voidDocumentation/prctl/disable-tsc-test.c: main signature changed to void
Documentation/ptp/testptp.c: Sign comparison fix
Documentation/timers/hpet_example.c: Sign comparision fixSigned-off-by: Mahesh Khanwalkar
Signed-off-by: Jonathan Corbet
23 Jun, 2015
1 commit
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The following was seen in linux-next build coverage, which is somewhat
unique since it uses powerpc host to cross compile x86:Documentation/prctl/disable-tsc-on-off-stress-test.c:36:1: error:
impossible register constraint in 'asm'
Documentation/prctl/disable-tsc-ctxt-sw-stress-test.c:34:1: error:
impossible register constraint in 'asm'
Documentation/prctl/disable-tsc-test.c:36:1: error: impossible
register constraint in 'asm'It probably makes sense to just skip building these tests when
we are cross compiling.Cc: Jonathan Corbet
Cc: linux-doc@vger.kernel.org
Cc: Erik Bosman
Signed-off-by: Paul Gortmaker
Signed-off-by: Jonathan Corbet
28 Oct, 2014
1 commit
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The prctl test code in Documentation/ tries to show how to
use a call that only makes sense on x86. Restrict it there
so that other platforms don't try to call asm("rdtsc").Signed-off-by: Alexander Graf
Acked-by: Peter Foley
Signed-off-by: Jonathan Corbet
26 Sep, 2014
3 commits
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Add some missing files to .gitignore.
Push Documentation/.gitignore down into subdirectories.Signed-off-by: Peter Foley
Signed-off-by: Randy Dunlap
Signed-off-by: Jiri Kosina -
Signed-off-by: Peter Foley
Signed-off-by: Randy Dunlap
Signed-off-by: Jiri Kosina -
Add a bunch of previously unbuilt source files to the Documentation build
machinery.Signed-off-by: Peter Foley
Signed-off-by: Randy Dunlap
Signed-off-by: Jiri Kosina
02 Oct, 2012
1 commit
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This fixes two issues that could cause incompatibility between
kernel versions:- If a tracer uses SECCOMP_RET_TRACE to select a syscall number
higher than the largest known syscall, emulate the unknown
vsyscall by returning -ENOSYS. (This is unlikely to make a
noticeable difference on x86-64 due to the way the system call
entry works.)- On x86-64 with vsyscall=emulate, skipped vsyscalls were buggy.
This updates the documentation accordingly.
Signed-off-by: Andy Lutomirski
Acked-by: Will Drewry
Signed-off-by: James Morris
07 Jul, 2012
1 commit
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The documentation didn't actually mention how to enable no_new_privs.
This also adds a note about possible interactions between
no_new_privs and LSMs (i.e. why teaching systemd to set no_new_privs
is not necessarily a good idea), and it references the new docs
from include/linux/prctl.h.Suggested-by: Rob Landley
Signed-off-by: Andy Lutomirski
Acked-by: Kees Cook
Signed-off-by: James Morris
03 Jul, 2012
1 commit
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Document no_new_privs.
Signed-off-by: Andy Lutomirski
Acked-by: Kees Cook
Signed-off-by: James Morris
14 Apr, 2012
1 commit
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Documents how system call filtering using Berkeley Packet
Filter programs works and how it may be used.
Includes an example for x86 and a semi-generic
example using a macro-based code generator.Acked-by: Eric Paris
Signed-off-by: Will Drewry
Acked-by: Kees Cookv18: - added acked by
- update no new privs numbers
v17: - remove @compat note and add Pitfalls section for arch checking
(keescook@chromium.org)
v16: -
v15: -
v14: - rebase/nochanges
v13: - rebase on to 88ebdda6159ffc15699f204c33feb3e431bf9bdc
v12: - comment on the ptrace_event use
- update arch support comment
- note the behavior of SECCOMP_RET_DATA when there are multiple filters
(keescook@chromium.org)
- lots of samples/ clean up incl 64-bit bpf-direct support
(markus@chromium.org)
- rebase to linux-next
v11: - overhaul return value language, updates (keescook@chromium.org)
- comment on do_exit(SIGSYS)
v10: - update for SIGSYS
- update for new seccomp_data layout
- update for ptrace option use
v9: - updated bpf-direct.c for SIGILL
v8: - add PR_SET_NO_NEW_PRIVS to the samples.
v7: - updated for all the new stuff in v7: TRAP, TRACE
- only talk about PR_SET_SECCOMP now
- fixed bad JLE32 check (coreyb@linux.vnet.ibm.com)
- adds dropper.c: a simple system call disabler
v6: - tweak the language to note the requirement of
PR_SET_NO_NEW_PRIVS being called prior to use. (luto@mit.edu)
v5: - update sample to use system call arguments
- adds a "fancy" example using a macro-based generator
- cleaned up bpf in the sample
- update docs to mention arguments
- fix prctl value (eparis@redhat.com)
- language cleanup (rdunlap@xenotime.net)
v4: - update for no_new_privs use
- minor tweaks
v3: - call out BPF Berkeley Packet Filter (rdunlap@xenotime.net)
- document use of tentative always-unprivileged
- guard sample compilation for i386 and x86_64
v2: - move code to samples (corbet@lwn.net)
Signed-off-by: James Morris
20 Apr, 2008
1 commit
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This patch adds three tests that test whether the PR_GET_TSC and
PR_SET_TSC commands have the desirable effect.The tests check whether the control register is updated correctly
at context switches and try to discover bugs while enabling/disabling
the timestamp counter.Signed-off-by: Erik Bosman
Signed-off-by: Ingo Molnar
Signed-off-by: Thomas Gleixner
