linux-toradex.git/drivers/misc/lkdtm.c, branch v4.1.10

Add MODULE_DESCRIPTION to dummy-irq.c and lkdtm.c in drivers/misc

2014-07-09T21:19:34+00:00

This starts to address
https://bugzilla.kernel.org/show_bug.cgi?id=10770

Signed-off-by: Terry Chia 
Signed-off-by: Greg Kroah-Hartman

lkdtm: include cacheflush.h

2014-02-15T02:53:58+00:00

Some architectures need cacheflush.h explicitly included (mips) for
use of flush_icache_range():

    config: make ARCH=mips allmodconfig
    All error/warnings:
    >> ERROR: "flush_icache_range" undefined!

Reported-by: Fengguang Wu 
Signed-off-by: Kees Cook 
Signed-off-by: Greg Kroah-Hartman

lkdtm: add "WRITE_KERN" test

2014-02-14T20:30:20+00:00

Add "WRITE_KERN" crash target to validate that kernel executable memory
is not writable.

Signed-off-by: Kees Cook 
Signed-off-by: Greg Kroah-Hartman

lkdtm: flush icache and report actions

2014-02-14T20:30:20+00:00

Some CPUs explicitly need to have their icache flushed after making
executable code copies for the memory region execution tests.
Additionally, report the specific address targets being used so that
debugging non-crash failures is easier.

Signed-off-by: Kees Cook 
Signed-off-by: Greg Kroah-Hartman

lkdtm: convert to using pr_* for reports

2014-02-14T20:30:20+00:00

Move to using pr_* calls instead of printk calls for reporting.

Signed-off-by: Kees Cook 
Signed-off-by: Greg Kroah-Hartman

drivers: misc: Mark function jp_generic_ide_ioctl() as static in lkdtm.c

2013-12-19T00:41:52+00:00

This patch marks the function jp_generic_ide_ioctl() as static in
lkdtm.c because it is not used outside this file.

Thus, it also eliminates the following warnings in lkdtm.c:
drivers/misc/lkdtm.c:227:5: warning: no previous prototype for ‘jp_generic_ide_ioctl’ [-Wmissing-prototypes]

Signed-off-by: Rashika Kheria 
Reviewed-by: Josh Triplett 
Signed-off-by: Greg Kroah-Hartman

lkdtm: clean up sparse warnings

2013-12-09T06:39:51+00:00

Since lkdtm intentionally does "bad" things, we need to convince sparse
that we're doing these things on purpose. This adds an explicit cast
to the call to copy_to_user() and marks the spin lock as expecting
to dead-lock.

Reported-by: Fengguang Wu 
Signed-off-by: Kees Cook 
Signed-off-by: Greg Kroah-Hartman

lkdtm: add tests for additional page permissions

2013-10-29T23:13:39+00:00

Testing execution and access of userspace from the kernel is needed for
validating things like Intel's SMEP and SMAP protections. Additionally,
add an explicit test for validating that RO page permissions have been
set for the RO data area.

Signed-off-by: Kees Cook 
Signed-off-by: Greg Kroah-Hartman

lkdtm: adjust recursion size to avoid warnings

2013-10-29T23:13:39+00:00

When CONFIG_FRAME_WARN is set low (e.g. some ARM builds), the hard-coded
stack buffer size used for kernel stack over run testing triggers build
warnings. Instead, avoid the warning by recalcuating the buffer size and
recursion count needed to trigger the test. Also uses the recursion counter
indirectly to avoid changing the parameter during the test.

Signed-off-by: Kees Cook 
Signed-off-by: Greg Kroah-Hartman

lkdtm: isolate stack corruption test

2013-10-25T05:21:00+00:00

When tests were added to lkdtm that grew the stack frame, the stack
corruption test stopped working. This isolates the test in its own
function, and forces it not to be inlined.

Signed-off-by: Kees Cook 
Fixes: cc33c537c12f ("lkdtm: add "EXEC_*" triggers")
Cc: stable  # 3.12
Signed-off-by: Greg Kroah-Hartman