Masami Hiramatsu 3dda8d29b5 x86/kprobes: Verify stack frame on kretprobe ...

commit 3ff9c075cc767b3060bdac12da72fc94dd7da1b8 upstream.

Verify the stack frame pointer on kretprobe trampoline handler,
If the stack frame pointer does not match, it skips the wrong
entry and tries to find correct one.

This can happen if user puts the kretprobe on the function
which can be used in the path of ftrace user-function call.
Such functions should not be probed, so this adds a warning
message that reports which function should be blacklisted.

Tested-by: Andrea Righi <righi.andrea@gmail.com>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/155094059185.6137.15527904013362842072.stgit@devbox
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2019-04-27 09:34:02 +02:00

..

acpi

Merge branch 'acpi-pci'

2015-11-07 01:30:10 +01:00

asm-generic

asm-generic: Fix local variable shadow in __set_fixmap_offset

2019-04-03 06:23:23 +02:00

clocksource

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crypto

crypto: vmac - separate tfm and request context

2018-08-17 20:56:45 +02:00

drm

drm: Add DP PSR2 sink enable bit

2018-08-06 16:24:39 +02:00

dt-bindings

ARM: dts: Fix omap3 off mode pull defines

2017-11-21 09:21:19 +01:00

keys

KEYS: user: Align the payload buffer

2019-03-23 08:44:17 +01:00

kvm

KVM: arm/arm64: arch_timer: Preserve physical dist. active state on LR.active

2015-11-24 18:07:40 +01:00

linux

x86/kprobes: Verify stack frame on kretprobe

2019-04-27 09:34:02 +02:00

math-emu

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media

media: v4l: event: Prevent freeing event subscriptions while accessed

2018-10-10 08:52:10 +02:00

memory

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misc

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net

netns: provide pure entropy for net_hash_mix()

2019-04-27 09:33:55 +02:00

pcmcia

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ras

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rdma

IB/core: Make testing MR flags for writability a static inline function

2018-08-15 17:42:06 +02:00

rxrpc

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scsi

scsi: Add STARGET_CREATED_REMOVE state to scsi_target_state

2018-11-10 07:41:37 -08:00

soc

memory: tegra: Apply interrupts mask per SoC

2018-08-06 16:24:38 +02:00

sound

ALSA: compress: Fix stop handling on compressed capture streams

2019-02-20 10:13:16 +01:00

target

target: Avoid early CMD_T_PRE_EXECUTE failures during ABORT_TASK

2018-01-17 09:35:31 +01:00

trace

ext4: force inode writes when nfsd calls commit_metadata()

2019-01-13 10:05:30 +01:00

uapi

uapi/if_ether.h: move __UAPI_DEF_ETHHDR libc define

2019-02-20 10:13:24 +01:00

video

udlfb: set optimal write delay

2018-09-09 20:04:36 +02:00

xen

fix xen_swiotlb_dma_mmap prototype

2017-10-05 09:41:48 +02:00

Kbuild

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