WSL2-Linux-Kernel/arch/arm64
Will Deacon a22d570aee arm64: kprobes: Avoid calling kprobes debug handlers explicitly
Kprobes bypasses our debug hook registration code so that it doesn't
get tangled up with recursive debug exceptions from things like lockdep:

  http://lists.infradead.org/pipermail/linux-arm-kernel/2015-February/324385.html

However, since then, (a) the hook list has become RCU protected and (b)
the kprobes hooks were found not to filter out exceptions from userspace
correctly. On top of that, the step handler is invoked directly from
single_step_handler(), which *does* use the debug hook list, so it's
clearly not the end of the world.

For now, have kprobes use the debug hook registration API like everybody
else. We can revisit this in the future if this is found to limit
coverage significantly.

Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-04-09 11:21:13 +01:00
..
boot arm64: tegra: Disable CQE Support for SDMMC4 on Tegra186 2019-03-25 17:12:20 +01:00
configs Allwinner arm64 defconfig changes for 5.1 2019-02-15 16:51:26 +01:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-03-05 09:09:55 -08:00
include arm64: kprobes: Avoid calling kprobes debug handlers explicitly 2019-04-09 11:21:13 +01:00
kernel arm64: kprobes: Avoid calling kprobes debug handlers explicitly 2019-04-09 11:21:13 +01:00
kvm KVM: arm64: Reset the PMU in preemptible context 2019-03-19 17:56:24 +00:00
lib arm64: Makefile: Replace -pg with CC_FLAGS_FTRACE 2019-04-09 10:34:59 +01:00
mm arm64: debug: Remove unused return value from do_debug_exception() 2019-04-09 11:21:12 +01:00
net arm64: bpf: implement jitting of JMP32 2019-01-26 13:33:02 -08:00
xen arm64: mm: Add additional parameter to uaccess_ttbr0_disable 2018-01-17 13:57:49 +01:00
Kconfig arm64: remove obsolete selection of MULTI_IRQ_HANDLER 2019-03-20 17:34:16 +00:00
Kconfig.debug Kconfig: consolidate the "Kernel hacking" menu 2018-08-02 08:06:48 +09:00
Kconfig.platforms This pull request brings in a build fix for arm64 with bcm2835 2019-03-18 10:31:24 -07:00
Makefile kasan, arm64: adjust shadow size for tag-based mode 2018-12-28 12:11:43 -08:00