Add a space between subj= and feature= fields to make them parsable.
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paul Moore <pmoore@redhat.com>
Rename audit_log_remove_rule() to audit_tree_log_remove_rule() to avoid
confusion with watch and mark rule removal/changes.
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
Re-factor audit_rule_change() to reduce the amount of code redundancy and
simplify the logic.
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
Use same rule existence check order as audit_make_tree(), audit_to_watch(),
update_lsm_rule() for legibility.
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
openrisc:defconfig fails to build in next-20140926 with the following error.
In file included from arch/openrisc/kernel/signal.c:31:0:
./arch/openrisc/include/asm/syscall.h: In function 'syscall_get_arch':
./arch/openrisc/include/asm/syscall.h:77:9: error: 'EM_OPENRISC' undeclared
Fix by moving EM_OPENRISC to include/uapi/linux/elf-em.h.
Fixes: ce5d112827 ("ARCH: AUDIT: implement syscall_get_arch for all arches")
Cc: Eric Paris <eparis@redhat.com>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Eric Paris <eparis@redhat.com>
When task->comm is passed directly to audit_log_untrustedstring() without
getting a copy or using the task_lock, there is a race that could happen that
would output a NULL (\0) in the output string that would effectively truncate
the rest of the report text after the comm= field in the audit, losing fields.
Use get_task_comm() to get a copy while acquiring the task_lock to prevent
this and to prevent the result from being a mixture of old and new values of
comm.
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
When an AUDIT_GET_FEATURE message is sent from userspace to the kernel, it
should reply with a message tagged as an AUDIT_GET_FEATURE type with a struct
audit_feature. The current reply is a message tagged as an AUDIT_GET
type with a struct audit_feature.
This appears to have been a cut-and-paste-eo in commit b0fed40.
Reported-by: Steve Grubb <sgrubb@redhat.com>
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Report:
Looking at your example code in
http://people.redhat.com/rbriggs/audit-multicast-listen/audit-multicast-listen.c,
it seems that nlmsg_len field in the received messages is supposed to
contain the length of the header + payload, but it is always set to the
size of the header only, i.e. 16. The example program works, because
the printf format specifies the minimum width, not "precision", so it
simply prints out the payload until the first zero byte. This isn't too
much of a problem, but precludes the use of recvmmsg, iiuc?
(gdb) p *(struct nlmsghdr*)nlh
$14 = {nlmsg_len = 16, nlmsg_type = 1100, nlmsg_flags = 0, nlmsg_seq = 0, nlmsg_pid = 9910}
The only time nlmsg_len would have been updated was at audit_buffer_alloc()
inside audit_log_start() and never updated after. It should arguably be done
in audit_log_vformat(), but would be more efficient in audit_log_end().
Reported-by: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Since only one of val, uid, gid and lsm* are used at any given time, combine
them to reduce the size of the struct audit_field.
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Various audit events dealing with adding, removing and updating rules result in
invalid values set for the op keys which result in embedded spaces in op=
values.
The invalid values are
op="add rule" set in kernel/auditfilter.c
op="remove rule" set in kernel/auditfilter.c
op="remove rule" set in kernel/audit_tree.c
op="updated rules" set in kernel/audit_watch.c
op="remove rule" set in kernel/audit_watch.c
Replace the space in the above values with an underscore character ('_').
Coded-by: Burn Alting <burn@swtf.dyndns.org>
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Since there is already a primitive to do this operation in the atomic_t, use it
to simplify audit_serial().
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Use kernel.h definition.
Cc: Eric Paris <eparis@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
The arm64 tree added calls to audit_syscall_entry() and rightly included
the syscall number. The interface has since been changed to not need
the syscall number. As such, arm64 should no longer pass that value.
Signed-off-by: Eric Paris <eparis@redhat.com>
This patch adds auditing functions on entry to or exit from
every system call invocation.
Acked-by: Richard Guy Briggs <rgb@redhat.com>
Acked-by Will Deacon <will.deacon@arm.com>
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Since the arch is found locally in __audit_syscall_entry(), there is no need to
pass it in as a parameter. Delete it from the parameter list.
x86* was the only arch to call __audit_syscall_entry() directly and did so from
assembly code.
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: x86@kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-audit@redhat.com
Signed-off-by: Eric Paris <eparis@redhat.com>
---
As this patch relies on changes in the audit tree, I think it
appropriate to send it through my tree rather than the x86 tree.
We are currently embedding the same check from thread_info.h into
syscall.h thanks to the way syscall_get_arch() was implemented in the
audit tree. Instead create a new function, is_32bit_task() which is
similar to that found on the powerpc arch. This simplifies the
syscall.h code and makes the build/Kconfig requirements much easier
to understand.
Signed-off-by: Eric Paris <eparis@redhat.com
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: sparclinux@vger.kernel.org
After merging the audit tree, today's linux-next build (sparc defconfig)
failed like this:
In file included from include/linux/audit.h:29:0,
from mm/mmap.c:33:
arch/sparc/include/asm/syscall.h: In function 'syscall_get_arch':
arch/sparc/include/asm/syscall.h:131:9: error: 'TIF_32BIT' undeclared (first use in this function)
arch/sparc/include/asm/syscall.h:131:9: note: each undeclared identifier is reported only once for each function it appears in
And many more ...
Caused by commit 374c0c054122 ("ARCH: AUDIT: implement syscall_get_arch
for all arches").
This patch wraps the usage of TIF_32BIT in:
if defined(__sparc__) && defined(__arch64__)
Which solves the build problem.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
Include linux/thread_info.h so we can use is_32_bit_task() cleanly.
Then just simplify syscall_get_arch() since is_32_bit_task() works for
all configuration options.
Suggested-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Eric Paris <eparis@redhat.com>
avr32 does not have an asm/syscall.h file. We need the
syscall_get_arch() definition from that file for all arch's which
support CONFIG_AUDITSYSCALL. Obviously avr32 is not one of those
arch's. Move the include inside the CONFIG_AUDITSYSCALL such that we
only do the include if we need the results.
When the syscall_get_arch() call is moved inside __audit_syscall_entry()
this include can be dropped entirely. But that is going to require some
assembly changes on x86* in a patch that is not ready for the tree...
Reported-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
The AUDIT_SECCOMP record looks something like this:
type=SECCOMP msg=audit(1373478171.953:32775): auid=4325 uid=4325 gid=4325 ses=1 subj=unconfined_u:unconfined_r:unconfined_t:s0 pid=12381 comm="test" sig=31 syscall=231 compat=0 ip=0x39ea8bca89 code=0x0
In order to determine what syscall 231 maps to, we need to have the arch= field right before it.
To see the event, compile this test.c program:
=====
int main(void)
{
return seccomp_load(seccomp_init(SCMP_ACT_KILL));
}
=====
gcc -g test.c -o test -lseccomp
After running the program, find the record by: ausearch --start recent -m SECCOMP -i
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
signed-off-by: Eric Paris <eparis@redhat.com>
Since every arch should have syscall_get_arch() defined, stop using the
function argument and just collect this ourselves. We do not drop the
argument as fixing some code paths (in assembly) to not pass this first
argument is non-trivial. The argument will be dropped when that is
fixed.
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
Since Alpha supports syscall audit it now needs to have a syscall.h
which implements syscall_get_arch() rather than hard coding this value
into audit_syscall_entry().
Based-on-patch-by: Richard Briggs <rgb@redhat.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
Cc: linux-alpha@vger.kernel.org
This patch defines syscall_get_arch() for the um platform. It adds a
new syscall.h header file to define this. It copies the HOST_AUDIT_ARCH
definition from ptrace.h. (that definition will be removed when we
switch audit to use this new syscall_get_arch() function)
Based-on-patch-by: Richard Briggs <rgb@redhat.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
Cc: user-mode-linux-devel@lists.sourceforge.net
This patch defines syscall_get_arch() for the superh platform. It does
so in both syscall_32.h and syscall_64.h. I'm not certain if the
implementation in syscall_64.h couldn't just be used in syscall.h as I
can't really track the setting of CONFIG_64BIT...
This way is safe, but we might be able to combine these if a superh
person were able to review...
[v2]
fixed indentation stoopidity (Sergei Shtylyov)
use AUDIT_ARCH_SH instead of EM_SH
Based-on-patch-by: Richard Briggs <rgb@redhat.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
Cc: linux-sh@vger.kernel.org
syscall_get_arch() used to take a task as a argument. It now uses
current. Fix the doc text.
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
The kernel only uses struct audit_rule_data. We dropped support for
struct audit_rule a long time ago. Drop the definition in the header
file.
Signed-off-by: Eric Paris <eparis@redhat.com>
Pull timer fixes from Thomas Gleixner:
"Two fixes in the timer area:
- a long-standing lock inversion due to a printk
- suspend-related hrtimer corruption in sched_clock"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
timer: Fix lock inversion between hrtimer_bases.lock and scheduler locks
sched_clock: Avoid corrupting hrtimer tree during suspend
Pull ARM fixes from Russell King:
"A few fixes for ARM. Some of these are correctness issues:
- TLBs must be flushed after the old mappings are removed by the DMA
mapping code, but before the new mappings are established.
- An off-by-one entry error in the Keystone LPAE setup code.
Fixes include:
- ensuring that the identity mapping for LPAE does not remove the
kernel image from the identity map.
- preventing userspace from trapping into kgdb.
- fixing a preemption issue in the Intel iwmmxt code.
- fixing a build error with nommu.
Other changes include:
- Adding a note about which areas of memory are expected to be
accessible while the identity mapping tables are in place"
* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: 8124/1: don't enter kgdb when userspace executes a kgdb break instruction
ARM: idmap: add identity mapping usage note
ARM: 8115/1: LPAE: reduce damage caused by idmap to virtual memory layout
ARM: fix alignment of keystone page table fixup
ARM: 8112/1: only select ARM_PATCH_PHYS_VIRT if MMU is enabled
ARM: 8100/1: Fix preemption disable in iwmmxt_task_enable()
ARM: DMA: ensure that old section mappings are flushed from the TLB
The kgdb breakpoint hooks (kgdb_brk_fn and kgdb_compiled_brk_fn)
should only be entered when a kgdb break instruction is executed
from the kernel. Otherwise, if kgdb is enabled, a userspace program
can cause the kernel to drop into the debugger by executing either
KGDB_BREAKINST or KGDB_COMPILED_BREAK.
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Omar Sandoval <osandov@osandov.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add a note about the usage of the identity mapping; we do not support
accesses outside of the identity map region and kernel image while a
CPU is using the identity map. This is because the identity mapping
may overwrite vmalloc space, IO mappings, the vectors pages, etc.
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Pull vfs fixes from Al Viro:
"This contains a couple of fixes - one is the aio fix from Christoph,
the other a fallocate() one from Eric"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
vfs: fix check for fallocate on active swapfile
direct-io: fix AIO regression
Pull x86 fix from Peter Anvin:
"A single fix to not invoke the espfix code on Xen PV, as it turns out
to oops the guest when invoked after all. This patch leaves some
amount of dead code, in particular unnecessary initialization of the
espfix stacks when they won't be used, but in the interest of keeping
the patch minimal that cleanup can wait for the next cycle"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86_64/entry/xen: Do not invoke espfix64 on Xen
Here are some tiny staging driver bugfixes that I've had in my tree for
the past week that resolve some reported issues. Nothing major at all,
but it would be good to get them merged for 3.16-rc8 or -final.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-3.16-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver bugfixes from Greg KH:
"Here are some tiny staging driver bugfixes that I've had in my tree
for the past week that resolve some reported issues. Nothing major at
all, but it would be good to get them merged for 3.16-rc8 or -final"
* tag 'staging-3.16-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: vt6655: Fix disassociated messages every 10 seconds
staging: vt6655: Fix Warning on boot handle_irq_event_percpu.
staging: rtl8723au: rtw_resume(): release semaphore before exit on error
iio:bma180: Missing check for frequency fractional part
iio:bma180: Fix scale factors to report correct acceleration units
iio: buffer: Fix demux table creation
Fix race in dm cache that caused improper reporting of the number of
dirty blocks in the cache.
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Merge tag 'dm-3.16-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
"Fix dm bufio shrinker to properly zero-fill all fields.
Fix race in dm cache that caused improper reporting of the number of
dirty blocks in the cache"
* tag 'dm-3.16-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm cache: fix race affecting dirty block count
dm bufio: fully initialize shrinker
A DT bugfix for Nomadik that had an ambigouos double-inversion of a gpio
line, and one MAINTAINER URL update that might as well go in now.
We could hold off until the merge window, but then we'll just have to mark
the DT fix for stable and it just seems like in total causing more work.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM straggler SoC fix from Olof Johansson:
"A DT bugfix for Nomadik that had an ambigouos double-inversion of a
gpio line, and one MAINTAINER URL update that might as well go in now.
We could hold off until the merge window, but then we'll just have to
mark the DT fix for stable and it just seems like in total causing
more work"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
MAINTAINERS: Update Tegra Git URL
ARM: nomadik: fix up double inversion in DT
nr_dirty is updated without locking, causing it to drift so that it is
non-zero (either a small positive integer, or a very large one when an
underflow occurs) even when there are no actual dirty blocks. This was
due to a race between the workqueue and map function accessing nr_dirty
in parallel without proper protection.
People were seeing under runs due to a race on increment/decrement of
nr_dirty, see: https://lkml.org/lkml/2014/6/3/648
Fix this by using an atomic_t for nr_dirty.
Reported-by: roma1390@gmail.com
Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
1d3d4437ea ("vmscan: per-node deferred work") added a flags field to
struct shrinker assuming that all shrinkers were zero filled. The dm
bufio shrinker is not zero filled, which leaves arbitrary kmalloc() data
in flags. So far the only defined flags bit is SHRINKER_NUMA_AWARE.
But there are proposed patches which add other bits to shrinker.flags
(e.g. memcg awareness).
Rather than simply initializing the shrinker, this patch uses kzalloc()
when allocating the dm_bufio_client to ensure that the embedded shrinker
and any other similar structures are zeroed.
This fixes theoretical over aggressive shrinking of dm bufio objects.
If the uninitialized dm_bufio_client.shrinker.flags contains
SHRINKER_NUMA_AWARE then shrink_slab() would call the dm shrinker for
each numa node rather than just once. This has been broken since 3.12.
Signed-off-by: Greg Thelen <gthelen@google.com>
Acked-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org # v3.12+
Fix the broken check for calling sys_fallocate() on an active swapfile,
introduced by commit 0790b31b69 ("fs: disallow all fallocate
operation on active swapfile").
Signed-off-by: Eric Biggers <ebiggers3@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
The direct-io.c rewrite to use the iov_iter infrastructure stopped updating
the size field in struct dio_submit, and thus rendered the check for
allowing asynchronous completions to always return false. Fix this by
comparing it to the count of bytes in the iov_iter instead.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Tim Chen <tim.c.chen@linux.intel.com>
Tested-by: Tim Chen <tim.c.chen@linux.intel.com>
One commit that fixes a problem causing PNP devices to be associated
with wrong ACPI device objects sometimes during device enumeration
due to an incorrect check in a matching function.
That problem was uncovered by the ACPI device enumeration rework
in 3.14.
/
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Merge tag 'pm+acpi-3.16-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki:
"One commit that fixes a problem causing PNP devices to be associated
with wrong ACPI device objects sometimes during device enumeration due
to an incorrect check in a matching function.
That problem was uncovered by the ACPI device enumeration rework in
3.14"
* tag 'pm+acpi-3.16-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / PNP: Fix acpi_pnp_match()
platforms. Missed this one from the last set of fixes.
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Merge tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mike.turquette/linux
Pull clock driver fix from Mike Turquette:
"A single patch to re-enable audio which is broken on all DRA7
SoC-based platforms. Missed this one from the last set of fixes"
* tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mike.turquette/linux:
clk: ti: clk-7xx: Correct ABE DPLL configuration
Pull crypto fix from Herbert Xu:
"This adds missing SELinux labeling to AF_ALG sockets which apparently
causes SELinux (or at least the SELinux people) to misbehave :)"
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: af_alg - properly label AF_ALG socket
Richard Guy Briggs
Eric Paris
Guenter Roeck
Burn Alting
Fabian Frederick
AKASHI Takahiro
Stephen Rothwell
Linus Torvalds
Omar Sandoval
Russell King
Anssi Hannula
Greg Thelen
Jan Kara
Eric Biggers
Christoph Hellwig