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This is the same issue as ppc64 before, when returning to userland we
shouldn't re-compute the seccomp check or the task could be killed during
sigreturn when orig_eax is overwritten by the sigreturn syscall. This was
found by Roland.
This was harmless from a security standpoint, but some i686 users reported
failures with auditing enabled system wide (some distro surprisingly makes
it the default) and I reproduced it too by keeping the whole workload under
strace -f.
Patch is tested and works for me under strace -f.
nobody@athlon:~/cpushare> strace -o /tmp/o -f python seccomp_test.py
make: Nothing to be done for `seccomp_test'.
Starting computing some malicious bytecode
init
load
start
stop
receive_data failure
kill
exit_code 0 signal 9
The malicious bytecode has been killed successfully by seccomp
Starting computing some safe bytecode
init
load
start
stop
174 counts
kill
exit_code 0 signal 0
The seccomp_test.py completed successfully, thank you for testing.
(akpm: collaterally cleaned up a bit of do_syscall_trace() too)
Signed-off-by: Andrea Arcangeli <andrea@cpushare.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Add TANBAC TB0287 support.
Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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The following patch changes the usages of PVR_440* into strcmp's with the
cpu_name field, and removes the defines altogether. The Ebony portion was
briefly tested long ago. One benefit of moving from PVR-tests to string
tests in general is that not all CPUs can be on and be able to do this type
of comparison.
See http://patchwork.ozlabs.org/linuxppc/patch?id=1250 for the original
thread.
Signed-off-by: Tom Rini <trini@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Modifies serial_init to get base baud rate from the rs_table entry instead
of BAUD_BASE. This patch eliminates duplication between the
SERIAL_PORT_DFNS macro and BAUD_BASE. Without the patch, if a port set the
baud rate in SERIAL_PORT_DFNS, but did not update BASE_BAUD, the BASE_BAUD
value would still be used.
Signed-off-by: Grant Likely <grant.likely@gdcanada.com>
Signed-off-by: Tom Rini <trini@kernel.crashing.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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In the flush and invalidate bootcode on PPC4xx we were accidentally using
the wrong instruction. Use cmplw, which reads from a register like we
want.
Signed-off-by: Tom Rini <trini@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Subject says it all, there is no need to link perfmon.o on
sub-architectures other than CONFIG_E500.
Signed-off-by: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Looks like the help comment for MPC834x got merged incorrectly.
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Remove the weird and apparently unnecessary logic in MP_processor_info() which
assumes that the BSP is the first one to run MP_processor_info(). On one of
my boxes that isn't true and cpu_possible_map gets the wrong value.
Cc: Zwane Mwaikambo <zwane@arm.linux.org.uk>
Cc: Alexander Nyberg <alexn@telia.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Needed to get them to build.
And a hint to avoid hardcoding to many constants in assembler.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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Cris has a dedicated asm-offsets.c file per subarchitecture.
So a symlink is created to put the desired asm-offsets.c file
in $(ARCH)/kernel
This is absolutely not good practice, but it was the trick
used in the rest of the cris code.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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Removed obsolete stuff from arch makefile.
mips had a special rule for generating asm-offsets.h so preserved it
using an architecture specific hook in top-level Kbuild file.
Renamed .h file to asm-offsets.h
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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Delete obsolete stuff from arch Makefile
Rename file to asm-offsets.h
The trick used in the arch Makefile to circumvent the circular
dependency is kept.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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Deleted obsolete stuff from arch makefile
Renamed .c file to asm-offsets.h
Fix include of asm-offsets.h to use new name
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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Delete obsolete stuff from arch makefiles
Rename .h file to asm-offsets.h
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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Delete obsoleted stuff from arch Makefile and rename
constants.h to asm-offsets.h
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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Delete obsoleted parts form arch makefiles and rename to asm-offsets.h
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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Rename all includes to use asm-offsets.h to match generic name
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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h8300, m68knommu, sh and sh64 all used the name asm-offsets.h so minimal
changes required.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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Patch from Richard Purdie
Fix a pm_message_t type warning in the Sharp scoop driver
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Patch from Richard Purdie
We can remove this timer and its associated code from the corgi
platform code now mmc_detect_change() and the pxamci code support
an optional delay.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The legacy PIC's name is "i8259".
Signed-off-by: Karsten Wiese <annabellesgarden@yahoo.de>
Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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sys_mbind is a 6-arg syscall, hence needs wrapping to save the
sixth argument.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Passes -m64 to sparse on uml/amd64, tells sparse to stay out of
USER_OBJS.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Building asm-offsets.h has been moved to a seperate Kbuild file
located in the top-level directory. This allow us to share the
functionality across the architectures.
The old rules in architecture specific Makefiles will die
in subsequent patches.
Furhtermore the usual kbuild dependency tracking is now used
when deciding to rebuild asm-offsets.s. So we no longer risk
to fail a rebuild caused by asm-offsets.c dependencies being touched.
With this common rule-set we now force the same name across
all architectures. Following patches will fix the rest.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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It's called printch, not printchar
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The pciconfig_iobase, pciconfig_read and pciconfig_write system calls
were only implemented for 32-bit processes; for 64-bit processes they
returned an ENOSYS error. This allows them to be used by 64-bit
processes as well. The X server uses pciconfig_iobase at least, and
this change is necessary to allow a 64-bit X server to work on my G5.
Signed-off-by: Paul Mackerras <paulus@samba.org>
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I/O memory accessors. Big-endian version. For those busses/devices
that do export big-endian I/O memory.
Of notable relevance/reference:
http://lwn.net/Articles/132804/
http://ozlabs.org/pipermail/linuxppc-embedded/2005-August/019798.html
http://ozlabs.org/pipermail/linuxppc-embedded/2005-August/019752.html
Signed-Off-By: Arthur Othieno <a.othieno@bluewin.ch>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This patch pulls the PCI-related junk out of struct device_node and
puts it in a separate structure, struct pci_dn. The device_node now
just has a void * pointer in it, which points to a struct pci_dn for
nodes that represent PCI devices. It could potentially be used in
future for device-specific data for other sorts of devices, such as
virtual I/O devices.
Signed-off-by: Paul Mackerras <paulus@samba.org>
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In PPC64 there are number of problems in arch/ppc64/boot/main.c that
prevent a kernel from making use of a large (greater than ~16MB) INITRD.
This is 64 bit architecture and really large INITRD images should be
possible.
Simply put the existing code has a fixed reservation (claim) address and
once the kernel plus initrd image are large enough to pass this address
all sorts of bad things occur. The fix is the dynamically establish the
first claim address above the loaded kernel plus initrd (plus some
"padding" and rounding). If PROG_START is defined this will be used as
the minimum safe address - currently known to be 0x01400000 for the
firmwares tested so far.
Signed-off-by: Mark Bellon <mbellon@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This patch cleans up the output generated by ppc64 builds.
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Make check_bugs() static inline and remove it from syscalls.c.
Signed-off-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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The earlier commit 8d9273918635f0301368c01b56c03a6f339e8d51
(Consolidate early console and PPCDBG code) broke iSeries because
it caused unregister_console(&udbg_console) to be called
unconditionally. iSeries never registers the udbg_console.
This just reverts part of the change.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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The SPARSEMEM EXTREME code (802f192e4a600f7ef84ca25c8b818c8830acef5a) that
went in yesterday broke PPC64 for !CONFIG_NUMA.
The problem is that (free|reserve)_bootmem don't take a page number as their
first argument, they take an address. Ruh roh.
Booted on P5 LPAR, iSeries and G5.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This fixes a severe bug in the bpa_iic driver that caused
all sorts of problems.
We had been using incorrect priority values for inter processor
interrupts, which resulted in always doing CALL_FUNCTION
instead of RESCHEDULE or DEBUGGER_BREAK.
The symptoms cured by this patch include bad performance on
SMP systems spurious kernel panics in the IPI code.
Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Add syscall numbers and syscall table entries for mbind,
set_mempolicy and get_mempolicy.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Rework the 68x328 configuration and setup code. All 68x328 varients
share the same timer hardware. So extract that into its own file,
instead of keeping copies in each processors setup code.
Signed-off-by: Greg Ungerer <gerg@uclinux.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Create common timer code for all 68x328 processor varients.
Signed-off-by: Greg Ungerer <gerg@uclinux.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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The boot loader on the MOD5272 board doesn't set the register maping,
so set it in the 5272 init code. There was code in there to support
this, but we had never needed to use it before.
Signed-off-by: Greg Ungerer <gerg@uclinux.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Add timer support for the ColdFire 523x processor family.
(It uses the ColdFire PIT timer hardware, so we just build that in).
Signed-off-by: Greg Ungerer <gerg@uclinux.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Rework the 68x328 configuration and setup code. All 68x328 varient
share the same timer hardware, so extract that into its own file,
instead of keeping copies in each processors setup code.
Signed-off-by: Greg Ungerer <gerg@uclinux.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Create common 68VZ328 config code. It is essentially the same for
all boards that use this, so no point having a version of it for
each.
Signed-off-by: Greg Ungerer <gerg@uclinux.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Remove DragonEngine2 specific config code. Use common 68VZ328 config
code now.
Signed-off-by: Greg Ungerer <gerg@uclinux.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Remove uCdimm specific config code. Use common 68VZ328 config code now.
Signed-off-by: Greg Ungerer <gerg@uclinux.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Signed-off-by: Greg Ungerer <gerg@uclinux.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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