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Markos Chandras ab6c15bc66 MIPS: MSC: Prevent out-of-bounds writes to MIPS SC ioremap'd region 
Previously, the lower limit for the MIPS SC initialization loop was
set incorrectly allowing one extra loop leading to writes
beyond the MSC ioremap'd space. More precisely, the value of the 'imp'
in the last loop increased beyond the msc_irqmap_t boundaries and
as a result of which, the 'n' variable was loaded with an incorrect
value. This value was used later on to calculate the offset in the
MSC01_IC_SUP which led to random crashes like the following one:

CPU 0 Unable to handle kernel paging request at virtual address e75c0200,
epc == 8058dba4, ra == 8058db90
[...]
Call Trace:
[<8058dba4>] init_msc_irqs+0x104/0x154
[<8058b5bc>] arch_init_irq+0xd8/0x154
[<805897b0>] start_kernel+0x220/0x36c

Kernel panic - not syncing: Attempted to kill the idle task!

This patch fixes the problem

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: stable@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7118/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-06-26 10:48:23 +01:00
..
.gitignore
…
8250-platform.c
mips: remove needless include of module.h from core kernel files.
2011-10-31 19:30:57 -04:00
asm-offsets.c
Revert "MIPS: Save/restore MSA context around signals"
2014-06-26 10:48:18 +01:00
binfmt_elfn32.c
MIPS: Compat: Fix cputime_to_timeval() arguments in compat binfmt_elf.
2013-06-06 16:11:26 +02:00
binfmt_elfo32.c
MIPS: Support for 64-bit FP with O32 binaries
2014-01-13 23:40:56 +01:00
bmips_vec.S
MIPS: Fix gigaton of warning building with microMIPS.
2014-03-31 18:17:12 +02:00
branch.c
Merge branch '3.15-fixes' into mips-for-linux-next
2014-06-04 22:53:02 +02:00
cevt-bcm1480.c
MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code
2013-07-14 19:36:51 -04:00
cevt-ds1287.c
MIPS: Whitespace cleanup.
2013-02-01 10:00:22 +01:00
cevt-gic.c
MIPS: allow GIC clockevent device config from other CPUs
2014-05-02 16:39:11 +01:00
cevt-gt641xx.c
MIPS: Whitespace cleanup.
2013-02-01 10:00:22 +01:00
cevt-r4k.c
Merge branch 'wip-mips-pm' of https://github.com/paulburton/linux into mips-for-linux-next
2014-05-29 15:08:23 +02:00
cevt-sb1250.c
MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code
2013-07-14 19:36:51 -04:00
cevt-txx9.c
MIPS: Whitespace cleanup.
2013-02-01 10:00:22 +01:00
cps-vec.S
MIPS: smp-cps: duplicate core0 CCA on secondary cores
2014-05-28 16:20:33 +01:00
cpu-bugs64.c
MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code
2013-07-14 19:36:51 -04:00
cpu-probe.c
MIPS: Add function get_ebase_cpunum
2014-05-30 21:01:11 +02:00
crash_dump.c
mips: remove savemaxmem parameter setup
2013-07-03 16:08:03 -07:00
crash.c
mips: delete non-required instances of include <linux/init.h>
2014-01-24 22:39:56 +01:00
csrc-bcm1480.c
MIPS: Whitespace cleanup.
2013-02-01 10:00:22 +01:00
csrc-gic.c
MIPS: Refactor GIC clocksource code.
2013-05-09 17:55:20 +02:00
csrc-ioasic.c
MIPS: DECstation HRT initialization rearrangement
2013-09-13 11:56:13 +02:00
csrc-r4k.c
mips: convert to clocksource_register_hz/khz
2011-02-21 13:33:50 -08:00
csrc-sb1250.c
MIPS: Whitespace cleanup.
2013-02-01 10:00:22 +01:00
early_printk_8250.c
MIPS: Add 8250/16550 serial early printk driver
2013-10-29 21:24:36 +01:00
early_printk.c
early_printk: consolidate random copies of identical code
2013-04-29 18:28:13 -07:00
entry.S
MIPS: MT: Remove SMTC support
2014-05-24 00:07:01 +02:00
ftrace.c
Most of the changes were largely clean ups, and some documentation.
2014-04-03 10:26:31 -07:00
genex.S
MIPS: MT: Remove SMTC support
2014-05-24 00:07:01 +02:00
gpio_txx9.c
…
head.S
MIPS: MT: Remove SMTC support
2014-05-24 00:07:01 +02:00
i8253.c
MIPS: irq: Remove IRQF_DISABLED
2011-12-07 22:03:45 +00:00
i8259.c
MIPS: MT: Remove SMTC support
2014-05-24 00:07:01 +02:00
idle.c
Merge branch 'wip-mips-pm' of https://github.com/paulburton/linux into mips-for-linux-next
2014-05-29 15:08:23 +02:00
irq_cpu.c
MIPS: Panic messages should not end in \n.
2013-10-29 21:24:19 +01:00
irq_txx9.c
MIPS: Whitespace cleanup.
2013-02-01 10:00:22 +01:00
irq-gic.c
MIPS: allow GIC clockevent device config from other CPUs
2014-05-02 16:39:11 +01:00
irq-gt641xx.c
MIPS: Whitespace cleanup.
2013-02-01 10:00:22 +01:00
irq-msc01.c
MIPS: MSC: Prevent out-of-bounds writes to MIPS SC ioremap'd region
2014-06-26 10:48:23 +01:00
irq-rm7000.c
MIPS: Whitespace cleanup.
2013-02-01 10:00:22 +01:00
irq.c
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
2014-06-09 18:10:34 -07:00
jump_label.c
MIPS: jump label: Add MIPS support.
2011-01-18 19:30:24 +01:00
kgdb.c
MIPS: kernel: {ftrace,kgdb}: Set correct address limit for cache flushes
2014-03-26 23:09:18 +01:00
kprobes.c
kprobes/mips: Fix to check double free of insn slot
2013-05-22 12:48:30 +02:00
linux32.c
unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINE
2013-05-09 13:46:38 -04:00
machine_kexec.c
MIPS: kdump: Add support
2012-12-13 16:46:47 +01:00
Makefile
MIPS: OCTEON: Enable use of FPU
2014-05-30 21:01:09 +02:00
mcount.S
MIPS: Ftrace: Fix function tracing return address to match
2013-09-03 14:46:27 +02:00
mips_ksyms.c
MIPS: checksum: Split the 'copy_user' symbol
2014-03-26 23:09:17 +01:00
mips_machine.c
MIPS: move mips_{set,get}_machine_name() to a more generic place
2013-05-08 01:19:07 +02:00
mips-cm.c
MIPS: Add generic CM probe & access code
2014-03-06 21:25:22 +01:00
mips-cpc.c
MIPS: smp-cps: rework core/VPE initialisation
2014-05-28 16:20:28 +01:00
mips-mt-fpaff.c
MIPS: MT: Remove SMTC support
2014-05-24 00:07:01 +02:00
mips-mt.c
MIPS: MT: Remove SMTC support
2014-05-24 00:07:01 +02:00
module-rela.c
MIPS: Whitespace cleanup.
2013-02-01 10:00:22 +01:00
module.c
MIPS: Use NUMA_NO_NODE instead of -1 for node ID.
2013-10-29 21:24:14 +01:00
octeon_switch.S
MIPS: OCTEON: Enable use of FPU
2014-05-30 21:01:09 +02:00
perf_event_mipsxx.c
MIPS: perf: Add interAptiv support
2014-03-31 18:17:12 +02:00
perf_event.c
MIPS: perf: Reorganize contents of perf support files.
2011-10-24 23:34:26 +01:00
pm-cps.c
MIPS: pm-cps: convert smp_mb__*()
2014-06-16 12:47:47 +01:00
pm.c
MIPS: PM: Implement PM helper macros
2014-05-02 16:39:10 +01:00
proc.c
Revert "MIPS: MT: proc: Add support for printing VPE and TC ids"
2014-05-13 00:29:33 +02:00
process.c
MIPS: MT: Remove SMTC support
2014-05-24 00:07:01 +02:00
prom.c
mips: convert fdt pointers to opaque pointers
2014-04-30 00:59:13 -05:00
ptrace32.c
MIPS: Simplify PTRACE_PEEKUSR for FPC_EIR
2014-03-31 18:17:12 +02:00
ptrace.c
MIPS: ptrace: Avoid smp_processor_id() in preemptible code
2014-05-28 10:54:41 +02:00
r4k_fpu.S
Revert "MIPS: Save/restore MSA context around signals"
2014-06-26 10:48:18 +01:00
r4k_switch.S
MIPS: OCTEON: Enable use of FPU
2014-05-30 21:01:09 +02:00
r2300_fpu.S
MIPS: Whitespace cleanup.
2013-02-01 10:00:22 +01:00
r2300_switch.S
MIPS: stack protector: Fix per-task canary switch
2013-10-07 15:31:04 +02:00
r6000_fpu.S
update David Miller's old email address
2011-04-06 06:19:38 -07:00
relocate_kernel.S
MIPS: kdump: Skip walking indirection page for crashkernels
2013-09-05 20:53:37 +02:00
reset.c
mips: migrate core kernel file from module.h --> export.h
2011-10-31 19:30:56 -04:00
rtlx-cmp.c
MIPS: APRP: Unregister rtlx interrupt hook at module exit
2014-03-06 20:55:07 +01:00
rtlx-mt.c
MIPS: MT: Remove SMTC support
2014-05-24 00:07:01 +02:00
rtlx.c
MIPS: APRP: Code formatting clean-ups.
2014-01-22 20:19:02 +01:00
scall32-o32.S
MIPS: Wire up renameat2 syscall.
2014-05-13 17:57:33 +02:00
scall64-64.S
MIPS: Wire up renameat2 syscall.
2014-05-13 17:57:33 +02:00
scall64-n32.S
MIPS: Wire up renameat2 syscall.
2014-05-13 17:57:33 +02:00
scall64-o32.S
MIPS: Wire up renameat2 syscall.
2014-05-13 17:57:33 +02:00
segment.c
MIPS: Add debugfs file to print the segmentation control registers
2014-01-22 20:19:00 +01:00
setup.c
MIPS: Fix start of free memory when using initrd
2013-10-29 21:24:23 +01:00
signal32.c
Revert "MIPS: Save/restore MSA context around signals"
2014-06-26 10:48:18 +01:00
signal_n32.c
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
2013-03-02 07:44:16 -08:00
signal-common.h
most of set_current_blocked() callers want SIGKILL/SIGSTOP removed from set
2012-06-01 12:58:51 -04:00
signal.c
Revert "MIPS: Save/restore MSA context around signals"
2014-06-26 10:48:18 +01:00
smp-bmips.c
MIPS: SMP: Remove plat_smp_ops cpus_done method.
2014-05-27 11:06:42 +02:00
smp-cmp.c
MIPS: SMP: Remove plat_smp_ops cpus_done method.
2014-05-27 11:06:42 +02:00
smp-cps.c
MIPS: smp-cps: Convert smp_mb__after_atomic_dec()
2014-06-16 12:47:47 +01:00
smp-gic.c
cpuidle: cpuidle-cps: add MIPS CPS cpuidle driver
2014-05-28 16:20:36 +01:00
smp-mt.c
MIPS: SMP: Remove plat_smp_ops cpus_done method.
2014-05-27 11:06:42 +02:00
smp-up.c
MIPS: SMP: Remove plat_smp_ops cpus_done method.
2014-05-27 11:06:42 +02:00
smp.c
Merge branch 'wip-mips-pm' of https://github.com/paulburton/linux into mips-for-linux-next
2014-05-29 15:08:23 +02:00
spinlock_test.c
mips: migrate core kernel file from module.h --> export.h
2011-10-31 19:30:56 -04:00
spram.c
MIPS: Use current_cpu_type() instead of c->cputype
2014-03-31 18:17:12 +02:00
stacktrace.c
mips: migrate core kernel file from module.h --> export.h
2011-10-31 19:30:56 -04:00
sync-r4k.c
MIPS: MT: Remove SMTC support
2014-05-24 00:07:01 +02:00
syscall.c
MIPS: Fix gigaton of warning building with microMIPS.
2014-03-31 18:17:12 +02:00
time.c
MIPS: MT: Remove SMTC support
2014-05-24 00:07:01 +02:00
topology.c
MIPS: Add arch generic CPU hotplug
2009-06-24 18:34:40 +01:00
traps.c
Merge branch '3.15-fixes' into mips-for-linux-next
2014-06-04 22:53:02 +02:00
unaligned.c
MIPS: kernel: unaligned: Handle unaligned accesses for EVA
2014-03-26 23:09:16 +01:00
vdso.c
coredump: remove VM_ALWAYSDUMP flag
2012-03-23 16:58:42 -07:00
vmlinux.lds.S
MIPS: Discard .eh_frame sections in linker script.
2013-08-26 15:33:41 +02:00
vpe-cmp.c
MIPS: APRP: Add VPE loader support for CMP platforms.
2014-01-22 20:19:02 +01:00
vpe-mt.c
MIPS: MT: Remove SMTC support
2014-05-24 00:07:01 +02:00
vpe.c
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
2014-01-30 17:20:32 -08:00
watch.c
MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code
2013-07-14 19:36:51 -04:00