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Mark Johnston 3a15ccadf8 kasan: Disable validation of function parameters passed by value 
It appears that the emitted code in the caller does not update shadow
state for values passed on the stack to the callee, which it seemingly
ought to do after pushing values on the stack and prior to the call
itself.  This leaves open a window where an interrupt handler can cause
regions of the stack containing these values to be poisoned, resulting
in rare false positive reports.  This happens particularly in the amd64
TLB invalidation code, where we liberally pass cpuset_t's around by
value.

LLVM has a flag to disable validation of accesses of function parameters
passed by value.  Such validation is itself a relatively new feature.
Turn it off for now.

Reported by:	pho, syzkaller
Sponsored by:	The FreeBSD Foundation

(cherry picked from commit 2a519c3b14)
2021-11-17 09:27:16 -05:00
..
config.mk Add SCTP_SUPPORT handling to config.mk. 2020-06-25 15:25:00 +00:00
dtb.build.mk Switch to the new device-tree vendor tree 2021-01-15 20:08:39 +01:00
dtb.mk Allow kernel config to specify DTS/DTSO to build, and out-of-tree support 2019-03-26 02:45:23 +00:00
files driver for MAX44009 I2C illuminance sensor 2021-11-13 11:12:05 +02:00
files.amd64 ossl: Add ChaCha20 cipher support. 2021-10-21 08:51:24 -07:00
files.arm arm: move signal delivery code to exec_machdep.c 2021-10-16 16:01:48 +03:00
files.arm64 Revert "files.arm64: fix sort order for aw_i2s.c" 2021-11-13 11:15:11 +02:00
files.i386 ossl: Add ChaCha20 cipher support. 2021-10-21 08:51:24 -07:00
files.mips amd64: implement strlen in assembly, take 2 2021-04-10 13:53:46 +00:00
files.powerpc amd64: implement strlen in assembly, take 2 2021-04-10 13:53:46 +00:00
files.riscv riscv: move signal delivery code to exec_machdep.c 2021-10-16 16:01:48 +03:00
files.x86 kvm_clock: KVM paravirtual clock support 2021-10-10 12:21:16 +03:00
kern.mk Don't error out on unused but set variables with clang 13 2021-09-02 23:53:18 +02:00
kern.opts.mk WITH_OFED build option: fix 2021-02-05 03:27:33 +02:00
kern.post.mk Use a template assembly file to generate the embedded MFS. 2020-10-20 16:48:45 +00:00
kern.pre.mk kasan: Disable validation of function parameters passed by value 2021-11-17 09:27:16 -05:00
kmod.mk conf/kern.mk: save some work by using realpath instead of cd ; pwd 2021-02-01 12:39:17 +00:00
kmod.opts.mk Add a kmod.opts.mk. 2019-11-21 18:14:26 +00:00
kmod_syms.awk
kmod_syms_prefix.awk
ldscript.amd64 amd64: do not assume that kernel is loaded at 2M physical 2021-08-24 02:21:13 +03:00
ldscript.arm Eliminate the generated ldscript for arm and arm64, and strip $a/$d marker 2019-12-29 18:17:12 +00:00
ldscript.arm64 More the arm64 early page tables and stack to .bss 2020-12-23 13:10:23 +00:00
ldscript.i386 Expose the kernel's build-ID through sysctl 2019-06-04 13:07:10 +00:00
ldscript.kmod.amd64 Move PLTs to the beginning of amd64 kernel modules. 2020-09-16 13:51:47 +00:00
ldscript.kmod.i386 Formalize the use of linker scripts for kernel modules. 2019-10-16 22:19:56 +00:00
ldscript.mips Expose the kernel's build-ID through sysctl 2019-06-04 13:07:10 +00:00
ldscript.mips.cfe Expose the kernel's build-ID through sysctl 2019-06-04 13:07:10 +00:00
ldscript.mips.mips64 Expose the kernel's build-ID through sysctl 2019-06-04 13:07:10 +00:00
ldscript.mips.octeon1 Fix linking OCTEON1 kernel with LLD 2020-03-22 22:18:00 +00:00
ldscript.powerpc [PowerPC] kernel ifunc support for powerpc*, fix ppc64 relocation oddities. 2020-05-07 19:32:49 +00:00
ldscript.powerpc64 [PowerPC] Fix build-id note on powerpc64 kernel 2020-06-01 19:40:59 +00:00
ldscript.powerpc64le [PowerPC64LE] Set up powerpc.powerpc64le architecture 2020-09-22 23:49:30 +00:00
ldscript.powerpcspe [PowerPC] kernel ifunc support for powerpc*, fix ppc64 relocation oddities. 2020-05-07 19:32:49 +00:00
ldscript.riscv Set the LMA of the riscv kernel to the OpenSBI jump target by default 2020-02-04 00:06:16 +00:00
Makefile.amd64 Don't try ctfconvert on file without debug info. 2020-04-28 16:09:25 +00:00
Makefile.arm Switch to the new device-tree vendor tree 2021-01-15 20:08:39 +01:00
Makefile.arm64 arm64: Check dtb version against the one we're expecting to find 2021-08-16 18:07:53 +02:00
Makefile.i386 Retire CLANG_NO_IAS34 2018-11-01 23:11:47 +00:00
Makefile.mips mips: Add the device-tree path to the include paths 2021-01-16 11:33:37 +01:00
Makefile.powerpc Remove tests for obsolete compilers in the build system 2020-05-12 15:22:40 +00:00
Makefile.riscv riscv: Add the device-tree path to the include path 2021-01-16 11:31:17 +01:00
newvers.sh newvers.sh: add newline at EOF in generated vers.c 2021-03-05 12:46:12 -05:00
NOTES Add EPOCH_TRACE to NOTES to get LINT coverage. 2021-10-19 16:53:30 -07:00
options conf: Add a KMSAN kernel option 2021-11-02 18:17:58 -04:00
options.amd64 Initial support for bhyve save and restore. 2020-05-05 00:02:04 +00:00
options.arm Remove unused options. 2020-11-29 17:42:32 +00:00
options.arm64 arm64: Add a SOC_BRCM_NS2 option 2021-02-19 19:03:56 +01:00
options.i386 hyperv: Fix vmbus after the i386 4/4 split 2021-06-21 21:09:17 -04:00
options.mips Remove remaning definition of GFB_<foo> options. 2020-12-05 19:44:00 +00:00
options.powerpc Remove remaning definition of GFB_<foo> options. 2020-12-05 19:44:00 +00:00
options.riscv o Add driver for PLIC (Platform-Level Interrupt Controller) device. 2018-06-12 17:45:15 +00:00
std.nodebug Split out the NODEBUG options to a common file 2021-01-14 16:57:53 +00:00
sysent.mk Rebuild sysent when capabilities.conf is updated. 2020-07-07 16:35:52 +00:00
systags.sh Fix kernel-tags target. 2020-01-23 13:56:12 +00:00
WITHOUT_SOURCELESS
WITHOUT_SOURCELESS_HOST
WITHOUT_SOURCELESS_UCODE retire cx,ctau drivers 2020-03-20 16:50:19 +00:00