Masami Hiramatsu e336b40277 kprobes: Prohibit probing on BUG() and WARN() address ...

Since BUG() and WARN() may use a trap (e.g. UD2 on x86) to
get the address where the BUG() has occurred, kprobes can not
do single-step out-of-line that instruction. So prohibit
probing on such address.

Without this fix, if someone put a kprobe on WARN(), the
kernel will crash with invalid opcode error instead of
outputing warning message, because kernel can not find
correct bug address.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David S . Miller <davem@davemloft.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Naveen N . Rao <naveen.n.rao@linux.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/156750890133.19112.3393666300746167111.stgit@devnote2
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2019-09-05 10:15:16 +02:00

..

acpi

Merge tag 'docs-5.3' of git://git.lwn.net/linux

2019-07-09 12:34:26 -07:00

asm-generic

include/asm-generic/5level-fixup.h: fix variable 'p4d' set but not used

2019-08-13 16:06:52 -07:00

clocksource

clocksource/drivers: Continue making Hyper-V clocksource ISA agnostic

2019-07-03 11:00:59 +02:00

crypto

Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

2019-07-08 20:57:08 -07:00

drm

drm/fb-helper: Instanciate shadow FB if configured in device's mode_config

2019-08-01 15:01:35 +02:00

dt-bindings

Merge tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2019-07-19 17:19:24 -07:00

keys

Merge tag 'keys-request-20190626' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

2019-07-08 19:19:37 -07:00

kvm

KVM: arm/arm64: Sync ICH_VMCR_EL2 back when about to block

2019-08-05 15:36:46 +01:00

linux

kprobes: Prohibit probing on BUG() and WARN() address

2019-09-05 10:15:16 +02:00

math-emu

nds32: Mark expected switch fall-throughs

2019-08-29 11:06:56 -05:00

media

Merge tag 'media/v5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

2019-07-09 09:47:22 -07:00

misc

auxdisplay: charlcd: move charlcd.h to drivers/auxdisplay

2019-08-08 19:59:17 +02:00

net

nexthop: Fix nexthop_num_path for blackhole nexthops

2019-08-25 14:29:10 -07:00

pcmcia

Merge tag 'docs-5.3' of git://git.lwn.net/linux

2019-07-09 12:34:26 -07:00

ras

…

rdma

RDMA/restrack: Rewrite PID namespace check to be reliable

2019-08-20 13:44:44 -04:00

scsi

scsi: fcoe: Embed fc_rport_priv in fcoe_rport structure

2019-07-29 21:12:35 -04:00

soc

Merge tag 'arc-5.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

2019-08-27 10:50:27 -07:00

sound

Merge tag 'sound-5.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

2019-08-09 09:21:27 -07:00

target

…

trace

rxrpc: Fix read-after-free in rxrpc_queue_local()

2019-08-14 11:37:51 +01:00

uapi

Merge branch 'linus' into perf/core, to pick up fixes

2019-09-02 09:12:21 +02:00

vdso

…

video

Merge tag 'drm-next-2019-07-16' of git://anongit.freedesktop.org/drm/drm

2019-07-15 19:04:27 -07:00

xen

xen: avoid link error on ARM

2019-07-31 08:14:12 +02:00

Kbuild

kbuild: add net/netfilter/nf_tables_offload.h to header-test blacklist.

2019-07-21 11:43:43 -07:00