Jason Wessel 72630f7050 mips,kgdb: fix recursive page fault with CONFIG_KPROBES ...

commit f0a996eeed upstream.

This fault was detected using the kgdb test suite on boot and it
crashes recursively due to the fact that CONFIG_KPROBES on mips adds
an extra die notifier in the page fault handler.  The crash signature
looks like this:

kgdbts:RUN bad memory access test
KGDB: re-enter exception: ALL breakpoints killed
Call Trace:
[<807b7548>] dump_stack+0x20/0x54
[<807b7548>] dump_stack+0x20/0x54

The fix for now is to have kgdb return immediately if the fault type
is DIE_PAGE_FAULT and allow the kprobe code to decide what is supposed
to happen.

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2012-10-21 09:17:10 -07:00

..

cpufreq

MIPS: Use set_cpus_allowed_ptr

2010-05-21 21:31:14 +01:00

.gitignore

[MIPS] Ignore vmlinux.lds generated files

2008-08-26 09:10:27 +01:00

8250-platform.c

[MIPS] Put an end to <asm/serial.h>'s long and annyoing existence

2007-07-10 17:33:01 +01:00

asm-offsets.c

MIPS: Remove unused task_struct.trap_no field.

2010-08-05 13:26:30 +01:00

binfmt_elfn32.c

remove div_long_long_rem

2008-05-01 08:03:58 -07:00

binfmt_elfo32.c

MIPS: 64-bit: Fix o32 core dump

2009-07-03 15:45:27 +01:00

branch.c

MIPS: Sanitize restart logics

2010-10-18 16:59:02 +01:00

cevt-bcm1480.c

MIPS: Add missing #inclusions of <linux/irq.h>

2010-10-07 14:08:54 +01:00

cevt-ds1287.c

MIPS: Add missing #inclusions of <linux/irq.h>

2010-10-07 14:08:54 +01:00

cevt-gt641xx.c

MIPS: Add missing #inclusions of <linux/irq.h>

2010-10-07 14:08:54 +01:00

cevt-r4k.c

MIPS: Fix CP0 COUNTER clockevent race

2010-12-16 18:10:58 +00:00

cevt-sb1250.c

MIPS: Add missing #inclusions of <linux/irq.h>

2010-10-07 14:08:54 +01:00

cevt-smtc.c

MIPS: Add missing #inclusions of <linux/irq.h>

2010-10-07 14:08:54 +01:00

cevt-txx9.c

mips: convert to clocksource_register_hz/khz

2011-02-21 13:33:50 -08:00

cpu-bugs64.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

cpu-probe.c

MIPS: Set ELF AT_PLATFORM string for Loongson2 processors

2011-05-19 09:55:48 +01:00

csrc-bcm1480.c

mips: convert to clocksource_register_hz/khz

2011-02-21 13:33:50 -08:00

csrc-ioasic.c

mips: convert to clocksource_register_hz/khz

2011-02-21 13:33:50 -08:00

csrc-powertv.c

mips: convert to clocksource_register_hz/khz

2011-02-21 13:33:50 -08:00

csrc-r4k.c

mips: convert to clocksource_register_hz/khz

2011-02-21 13:33:50 -08:00

csrc-sb1250.c

mips: convert to clocksource_register_hz/khz

2011-02-21 13:33:50 -08:00

early_printk.c

[MIPS] fix sparse warning about setup_early_printk()

2008-07-15 18:44:29 +01:00

entry.S

MIPS: Split do_syscall_trace into two functions.

2011-05-19 09:55:44 +01:00

ftrace.c

MIPS: Mask jump target in ftrace_dyn_arch_init_insns().

2011-05-10 18:15:22 +01:00

genex.S

MIPS: Read watch registers with interrupts disabled.

2009-01-30 21:32:58 +00:00

gpio_txx9.c

[MIPS] txx9: Make gpio_txx9 entirely spinlock-safe

2008-07-15 18:44:34 +01:00

head.S

MIPS: Avoid potential hazard on Context register

2009-11-02 12:00:07 +01:00

i8253.c

clocksource: convert mips to generic i8253 clocksource

2011-05-14 10:29:48 +01:00

i8259.c

PM / MIPS: Convert i8259.c to using syscore_ops

2011-07-16 00:59:54 +02:00

init_task.c

Use new __init_task_data macro in arch init_task.c files.

2009-09-21 06:27:08 +02:00

irq_cpu.c

MIPS: Convert the irq functions to the new names

2011-03-29 14:48:07 +02:00

irq_txx9.c

MIPS: Convert the irq functions to the new names

2011-03-29 14:48:07 +02:00

irq-gic.c

MIPS: Convert the irq functions to the new names

2011-03-29 14:48:07 +02:00

irq-gt641xx.c

MIPS: Convert the irq functions to the new names

2011-03-29 14:48:07 +02:00

irq-msc01.c

MIPS: Convert the irq functions to the new names

2011-03-29 14:48:07 +02:00

irq-rm7000.c

MIPS: Convert the irq functions to the new names

2011-03-29 14:48:07 +02:00

irq-rm9000.c

MIPS: Convert the irq functions to the new names

2011-03-29 14:48:07 +02:00

irq.c

MIPS: Convert the irq functions to the new names

2011-03-29 14:48:07 +02:00

jump_label.c

MIPS: jump label: Add MIPS support.

2011-01-18 19:30:24 +01:00

kgdb.c

mips,kgdb: fix recursive page fault with CONFIG_KPROBES

2012-10-21 09:17:10 -07:00

kprobes.c

MIPS: kprobe: Add support.

2010-08-05 13:26:29 +01:00

kspd.c

MIPS: kspd: Adjust confusing if indentation

2010-10-04 18:33:54 +01:00

linux32.c

MIPS: compat: Don't clobber personality bits in 32-bit sys_personality().

2010-12-16 18:10:54 +00:00

machine_kexec.c

[MIPS] Unconditionally writeback and invalidate caches on kexec.

2007-08-27 02:16:59 +01:00

Makefile

MIPS: Kconfig and Makefile update for Netlogic XLR/XLS

2011-05-19 09:55:40 +01:00

mcount.S

MIPS: tracing: Fix the indentation of mcount.S

2010-08-05 13:26:06 +01:00

mips_ksyms.c

MIPS: Tracing: Add static function tracer support for MIPS

2009-12-17 01:57:21 +00:00

mips_machine.c

MIPS: Add generic support for multiple machines within a single kernel

2011-01-18 19:30:21 +01:00

mips-mt-fpaff.c

MIPS: MT: Fix build error iFPU affinity code

2010-10-25 08:12:27 -07:00

mips-mt.c

MIPS: Remove useless zero initializations.

2009-09-17 20:07:51 +02:00

module.c

MIPS: jump label: Add MIPS support.

2011-01-18 19:30:24 +01:00

octeon_switch.S

update David Miller's old email address

2011-04-06 06:19:38 -07:00

perf_event_mipsxx.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

perf_event.c

MIPS, Perf-events: Use unsigned delta for right shift in event update

2011-03-14 21:07:27 +01:00

proc.c

MIPS: Probe for presence of KScratch registers.

2011-01-18 19:30:22 +01:00

process.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

prom.c

dt/flattree: explicitly pass command line pointer to early_init_dt_scan_chosen

2011-05-11 14:53:18 +02:00

ptrace32.c

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

ptrace.c

MIPS: Split do_syscall_trace into two functions.

2011-05-19 09:55:44 +01:00

r4k_fpu.S

update David Miller's old email address

2011-04-06 06:19:38 -07:00

r4k_switch.S

update David Miller's old email address

2011-04-06 06:19:38 -07:00

r2300_fpu.S

update David Miller's old email address

2011-04-06 06:19:38 -07:00

r2300_switch.S

update David Miller's old email address

2011-04-06 06:19:38 -07:00

r6000_fpu.S

update David Miller's old email address

2011-04-06 06:19:38 -07:00

relocate_kernel.S

[MIPS] Kexec: Fix several 64-bit bugs.

2007-07-31 21:35:36 +01:00

reset.c

[MIPS] Export pm_power_off

2006-12-10 21:52:11 +00:00

rtlx.c

llseek: automatically add .llseek fop

2010-10-15 15:53:27 +02:00

scall32-o32.S

ns: Wire up the setns system call

2011-05-28 10:48:39 -07:00

scall64-64.S

ns: Wire up the setns system call

2011-05-28 10:48:39 -07:00

scall64-n32.S

ns: Wire up the setns system call

2011-05-28 10:48:39 -07:00

scall64-o32.S

ns: Wire up the setns system call

2011-05-28 10:48:39 -07:00

setup.c

MIPS: Implement __read_mostly

2011-01-18 19:30:28 +01:00

signal32.c

MIPS: Fix GCC-4.6 'set but not used' warning in signal*.c

2011-03-14 21:07:25 +01:00

signal_n32.c

MIPS: do_sigaltstack() expects userland pointers

2010-10-18 16:59:03 +01:00

signal-common.h

MIPS: Move signal trampolines off of the stack.

2010-04-12 17:26:15 +01:00

signal.c

MIPS: Fix GCC-4.6 'set but not used' warning in signal*.c

2011-03-14 21:07:25 +01:00

smp-cmp.c

cpumask: Use accessors for cpu_*_mask: mips

2009-09-24 09:34:48 +09:30

smp-mt.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

smp-up.c

cpumask: arch_send_call_function_ipi_mask: mips

2009-09-24 09:34:45 +09:30

smp.c

MIPS: Move idle task creation to work queue

2011-03-14 21:07:27 +01:00

smtc-asm.S

[MIPS] SMTC: Don't set and restore irqregs ptr from self_ipi.

2007-06-11 18:20:53 +01:00

smtc-proc.c

[MIPS] SMP: Call platform methods via ops structure.

2008-01-29 10:14:57 +00:00

smtc.c

sched: Provide scheduler_ipi() callback in response to smp_send_reschedule()

2011-04-14 08:52:32 +02:00

spinlock_test.c

MIPS: Crazy spinlock speed test.

2010-02-27 12:53:42 +01:00

spram.c

MIPS: SPRAM: Clean up support code a little

2009-11-02 12:00:05 +01:00

stacktrace.c

MIPS: Eleminate filenames from comments

2009-08-03 17:52:40 +01:00

sync-r4k.c

MIPS: CMP: Update sync-r4k for current kernel

2009-07-03 15:45:27 +01:00

syscall.c

MIPS: Move arch_get_unmapped_area and gang to new file.

2011-05-19 09:55:49 +01:00

time.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

topology.c

MIPS: Add arch generic CPU hotplug

2009-06-24 18:34:40 +01:00

traps.c

MIPS: Fix duplicate invocation of notify_die.

2011-05-18 14:18:26 +01:00

unaligned.c

MIPS: add support for software performance events

2010-10-29 19:08:48 +01:00

vdso.c

MIPS: Make init_vdso a subsys_initcall.

2010-07-26 19:08:16 +01:00

vmlinux.lds.S

MIPS: Properly align the .data..init_task section.

2012-08-01 12:26:54 -07:00

vpe.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

watch.c

MIPS: Add HARDWARE_WATCHPOINTS definitions and support code.

2008-10-11 16:18:56 +01:00