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Markos Chandras 9a87f81f93 MIPS: MSC: Prevent out-of-bounds writes to MIPS SC ioremap'd region 
commit ab6c15bc66 upstream.

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: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7118/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-06 18:54:13 -07:00
..
.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 MIPS: ASM offsets for VCPU arch specific fields. 2013-05-08 03:55:37 +02:00
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: Compat: Fix cputime_to_timeval() arguments in compat binfmt_elf. 2013-06-06 16:11:26 +02:00
bmips_vec.S MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
branch.c MIPS: MIPS16e: Support handling of delay slots. 2013-05-09 17:55:20 +02:00
cevt-bcm1480.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
cevt-ds1287.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
cevt-gic.c MIPS: Add new GIC clockevent driver. 2013-05-09 17:55:21 +02:00
cevt-gt641xx.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
cevt-r4k.c Merge branch 'mti-next' of git://git.linux-mips.org/pub/scm/sjhill/linux-sjhill into mips-for-linux-next 2013-05-09 17:57:30 +02:00
cevt-sb1250.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
cevt-smtc.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
cevt-txx9.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
cpu-bugs64.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
cpu-probe.c MIPS: Consolidate idle loop / WAIT instruction support in a single file. 2013-05-22 01:34:25 +02:00
crash.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
crash_dump.c MIPS: Fix build error for crash_dump.c in 3.10-rc1 2013-05-17 20:36:02 +02:00
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: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
csrc-powertv.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
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.c early_printk: consolidate random copies of identical code 2013-04-29 18:28:13 -07:00
entry.S Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal 2012-12-12 12:22:13 -08:00
ftrace.c MIPS: ftrace: Add missing CONFIG_DYNAMIC_FTRACE 2013-06-10 18:15:18 +02:00
genex.S MIPS: Idle: Break r4k_wait into two functions and fix it. 2013-05-22 01:34:28 +02:00
gpio_txx9.c
head.S MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
i8253.c MIPS: irq: Remove IRQF_DISABLED 2011-12-07 22:03:45 +00:00
i8259.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
idle.c MIPS: Alchemy: fix wait function 2013-06-10 17:59:46 +02:00
irq-gic.c MIPS: Add new GIC clockevent driver. 2013-05-09 17:55:21 +02:00
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 2014-07-06 18:54:13 -07:00
irq-rm7000.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
irq.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
irq_cpu.c Merge branch 'mips-next-3.9' of git://git.linux-mips.org/pub/scm/john/linux-john into mips-for-linux-next 2013-02-21 12:51:33 +01:00
irq_txx9.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
jump_label.c MIPS: jump label: Add MIPS support. 2011-01-18 19:30:24 +01:00
kgdb.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +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: Consolidate idle loop / WAIT instruction support in a single file. 2013-05-22 01:34:25 +02:00
mcount.S MIPS: Unbreak function tracer for 64-bit kernel. 2013-04-05 15:10:22 +02:00
mips-mt-fpaff.c MIPS: MT: Fix build with CONFIG_UIDGID_STRICT_TYPE_CHECKS=y 2012-12-13 18:15:26 +01:00
mips-mt.c Merge branch 'master' into for-next 2012-04-08 21:48:52 +02:00
mips_ksyms.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +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
module-rela.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
module.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
octeon_switch.S MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
perf_event.c MIPS: perf: Reorganize contents of perf support files. 2011-10-24 23:34:26 +01:00
perf_event_mipsxx.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
proc.c MIPS: Idle: Consolidate all declarations in <asm/idle.h>. 2013-05-22 01:34:27 +02:00
process.c MIPS: Consolidate idle loop / WAIT instruction support in a single file. 2013-05-22 01:34:25 +02:00
prom.c MIPS: move mips_{set,get}_machine_name() to a more generic place 2013-05-08 01:19:07 +02:00
ptrace.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
ptrace32.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
r4k_fpu.S update David Miller's old email address 2011-04-06 06:19:38 -07:00
r4k_switch.S MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
r2300_fpu.S MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
r2300_switch.S MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
r6000_fpu.S update David Miller's old email address 2011-04-06 06:19:38 -07:00
relocate_kernel.S MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
reset.c mips: migrate core kernel file from module.h --> export.h 2011-10-31 19:30:56 -04:00
rtlx.c MIPS: rtlx: Fix implicit declaration of function set_vi_handler() 2013-06-06 16:11:25 +02:00
scall32-o32.S MIPS: microMIPS: Add support for exception handling. 2013-05-09 17:55:18 +02:00
scall64-64.S MIPS: N64: Wire getdents64(2) 2013-05-22 15:37:58 +02:00
scall64-n32.S get rid of compat_sys_semctl() and friends in case of ARCH_WANT_OLD_COMPAT_IPC 2013-03-03 23:00:27 -05:00
scall64-o32.S unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINE 2013-05-09 13:46:38 -04:00
setup.c MIPS: add detect_memory_region() 2013-05-08 01:19:11 +02:00
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 MIPS: microMIPS: Add vdso support. 2013-05-09 17:55:19 +02:00
signal32.c Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2013-03-02 07:44:16 -08:00
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
smp-bmips.c MIPS: BMIPS: delay irq enable to ->smp_finish() 2012-07-19 11:23:44 +02:00
smp-cmp.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
smp-mt.c MIPS: Move 'gic_present' to common location. 2013-05-09 17:55:20 +02:00
smp-up.c
smp.c MIPS: Idle: Consolidate all declarations in <asm/idle.h>. 2013-05-22 01:34:27 +02:00
smtc-asm.S MIPS: microMIPS: Add support for exception handling. 2013-05-09 17:55:18 +02:00
smtc-proc.c mips: single_open() leaks 2013-05-05 00:10:21 -04:00
smtc.c MIPS: Idle: Do address fiddlery in helper functions. 2013-05-22 01:34:28 +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 Disintegrate asm/system.h for MIPS 2012-03-28 18:30:02 +01:00
stacktrace.c mips: migrate core kernel file from module.h --> export.h 2011-10-31 19:30:56 -04:00
sync-r4k.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
syscall.c Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2013-03-02 07:44:16 -08:00
time.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
topology.c
traps.c MIPS: Trap exception handling fixes 2013-05-23 17:47:51 +02:00
unaligned.c MIPS: MIPS16e: Add unaligned access support. 2013-05-09 17:55:20 +02:00
vdso.c coredump: remove VM_ALWAYSDUMP flag 2012-03-23 16:58:42 -07:00
vmlinux.lds.S MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
vpe.c Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2013-03-02 07:44:16 -08:00
watch.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00