Changes in Makefile

122b52f0bab007ebeb414c8280c1def17b9ed1f4 - lkdtm/powerpc: add PPC_RADIX_TLBIEL test for radix MCE validation

Mon, 18 May 2026 08:56:05 +0200

lkdtm/powerpc: add PPC_RADIX_TLBIEL test for radix MCE validationAdd a new LKDTM trigger (PPC_RADIX_TLBIEL) that executes a process-scopedradix TLBIEL instruction to exercise the radix MMU behaviour andassociated machine check exception (MCE) handling paths.This provides a way to validate MCE handling in radix mode. Currently,there is no dedicated LKDTM test that exercises this path or allowstriggering radix-specific machine check behaviour for validation.The test is only enabled on ppc64 systems with radix MMUsupport and If radix is not active, the trigger is skipped and reported asXFAIL.Co-developed-by: Ritesh Harjani (IBM) Signed-off-by: Ritesh Harjani (IBM) Signed-off-by: Sayali Patil Reviewed-by: Ritesh Harjani (IBM) Reviewed-by: Michael Ellerman Link: https://patch.msgid.link/85c9b59217bcecb3c7af52e9d5b175266771d7de.1778975974.git.sayalip@linux.ibm.comSigned-off-by: Kees Cook List of files: /linux/drivers/misc/lkdtm/Makefile

57fbad15c2eee77276a541c616589b32976d2b8e - stackleak: Rename STACKLEAK to KSTACK_ERASE

Fri, 18 Jul 2025 01:25:06 +0200

stackleak: Rename STACKLEAK to KSTACK_ERASEIn preparation for adding Clang sanitizer coverage stack depth trackingthat can support stack depth callbacks:- Add the new top-level CONFIG_KSTACK_ERASE option which will be implemented either with the stackleak GCC plugin, or with the Clang stack depth callback support.- Rename CONFIG_GCC_PLUGIN_STACKLEAK as needed to CONFIG_KSTACK_ERASE, but keep it for anything specific to the GCC plugin itself.- Rename all exposed "STACKLEAK" names and files to "KSTACK_ERASE" (named for what it does rather than what it protects against), but leave as many of the internals alone as possible to avoid even more churn.While here, also split "prev_lowest_stack" into CONFIG_KSTACK_ERASE_METRICS,since that's the only place it is referenced from.Suggested-by: Ingo Molnar Link: https://lore.kernel.org/r/20250717232519.2984886-1-kees@kernel.orgSigned-off-by: Kees Cook List of files: /linux/drivers/misc/lkdtm/Makefile

ff9a79307f89563da6d841da8b7cc4a0afceb0e2 - Merge tag 'kbuild-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Sat, 18 May 2024 21:39:20 +0200

Merge tag 'kbuild-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuildPull Kbuild updates from Masahiro Yamada: - Avoid 'constexpr', which is a keyword in C23 - Allow 'dtbs_check' and 'dt_compatible_check' run independently of 'dt_binding_check' - Fix weak references to avoid GOT entries in position-independent code generation - Convert the last use of 'optional' property in arch/sh/Kconfig - Remove support for the 'optional' property in Kconfig - Remove support for Clang's ThinLTO caching, which does not work with the .incbin directive - Change the semantics of $(src) so it always points to the source directory, which fixes Makefile inconsistencies between upstream and downstream - Fix 'make tar-pkg' for RISC-V to produce a consistent package - Provide reasonable default coverage for objtool, sanitizers, and profilers - Remove redundant OBJECT_FILES_NON_STANDARD, KASAN_SANITIZE, etc. - Remove the last use of tristate choice in drivers/rapidio/Kconfig - Various cleanups and fixes in Kconfig* tag 'kbuild-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (46 commits) kconfig: use sym_get_choice_menu() in sym_check_prop() rapidio: remove choice for enumeration kconfig: lxdialog: remove initialization with A_NORMAL kconfig: m/nconf: merge two item_add_str() calls kconfig: m/nconf: remove dead code to display value of bool choice kconfig: m/nconf: remove dead code to display children of choice members kconfig: gconf: show checkbox for choice correctly kbuild: use GCOV_PROFILE and KCSAN_SANITIZE in scripts/Makefile.modfinal Makefile: remove redundant tool coverage variables kbuild: provide reasonable defaults for tool coverage modules: Drop the .export_symbol section from the final modules kconfig: use menu_list_for_each_sym() in sym_check_choice_deps() kconfig: use sym_get_choice_menu() in conf_write_defconfig() kconfig: add sym_get_choice_menu() helper kconfig: turn defaults and additional prompt for choice members into error kconfig: turn missing prompt for choice members into error kconfig: turn conf_choice() into void function kconfig: use linked list in sym_set_changed() kconfig: gconf: use MENU_CHANGED instead of SYMBOL_CHANGED kconfig: gconf: remove debug code ... List of files: /linux/drivers/misc/lkdtm/Makefile

7f7f6f7ad654b326897c9f54438a06f03454bd0d - Makefile: remove redundant tool coverage variables

Mon, 06 May 2024 15:35:43 +0200

Makefile: remove redundant tool coverage variablesNow Kbuild provides reasonable defaults for objtool, sanitizers, andprofilers.Remove redundant variables.Note:This commit changes the coverage for some objects: - include arch/mips/vdso/vdso-image.o into UBSAN, GCOV, KCOV - include arch/sparc/vdso/vdso-image-*.o into UBSAN - include arch/sparc/vdso/vma.o into UBSAN - include arch/x86/entry/vdso/extable.o into KASAN, KCSAN, UBSAN, GCOV, KCOV - include arch/x86/entry/vdso/vdso-image-*.o into KASAN, KCSAN, UBSAN, GCOV, KCOV - include arch/x86/entry/vdso/vdso32-setup.o into KASAN, KCSAN, UBSAN, GCOV, KCOV - include arch/x86/entry/vdso/vma.o into GCOV, KCOV - include arch/x86/um/vdso/vma.o into KASAN, GCOV, KCOVI believe these are positive effects because all of them are kernelspace objects.Signed-off-by: Masahiro Yamada Reviewed-by: Kees Cook Tested-by: Roberto Sassu List of files: /linux/drivers/misc/lkdtm/Makefile

fb28a8862dc4b5bf8e44578338f35d9c6c68339d - lkdtm: Disable CFI checking for perms functions

Wed, 01 May 2024 01:49:57 +0200

lkdtm: Disable CFI checking for perms functionsThe EXEC_RODATA test plays a lot of tricks to live in the .rodata section,and once again ran into objtool's (completely reasonable) assumptionsthat executable code should live in an executable section. However, thismanifested only under CONFIG_CFI_CLANG=y, as one of the .cfi_sites waspointing into the .rodata section.Since we're testing non-CFI execution properties in perms.c (androdata.c), we can disable CFI for the involved functions, and remove theCFI arguments from rodata.c entirely.Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-lkp/202308301532.d7acf63e-oliver.sang@intel.comFixes: 6342a20efbd8 ("objtool: Add elf_create_section_pair()")Link: https://lore.kernel.org/r/20240430234953.work.760-kees@kernel.orgSigned-off-by: Kees Cook List of files: /linux/drivers/misc/lkdtm/Makefile

efc72a665a61fd48c462f5248a9e3dc991398ddd - lkdtm: Disable return thunks in rodata.c

Mon, 18 Jul 2022 16:50:25 +0200

lkdtm: Disable return thunks in rodata.cThe following warning was seen: WARNING: CPU: 0 PID: 0 at arch/x86/kernel/alternative.c:557 apply_returns (arch/x86/kernel/alternative.c:557 (discriminator 1)) Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.19.0-rc4-00008-gee88d363d156 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-debian-1.16.0-4 04/01/2014 RIP: 0010:apply_returns (arch/x86/kernel/alternative.c:557 (discriminator 1)) Code: ff ff 74 cb 48 83 c5 04 49 39 ee 0f 87 81 fe ff ff e9 22 ff ff ff 0f 0b 48 83 c5 04 49 39 ee 0f 87 6d fe ff ff e9 0e ff ff ff <0f> 0b 48 83 c5 04 49 39 ee 0f 87 59 fe ff ff e9 fa fe ff ff 48 89The warning happened when apply_returns() failed to convert "JMP__x86_return_thunk" to RET. It was instead a JMP to nowhere, due to thethunk relocation not getting resolved.That rodata.o code is objcopy'd to .rodata, and later memcpy'd, sorelocations don't work (and are apparently silently ignored).LKDTM is only used for testing, so the naked RET should be fine. Sojust disable return thunks for that file.While at it, disable objtool and KCSAN for the file.Fixes: 0b53c374b9ef ("x86/retpoline: Use -mfunction-return")Reported-by: kernel test robot Debugged-by: Peter Zijlstra Signed-off-by: Josh Poimboeuf Signed-off-by: Peter Zijlstra (Intel) Link: https://lore.kernel.org/lkml/Ys58BxHxoDZ7rfpr@xsang-OptiPlex-9020/ List of files: /linux/drivers/misc/lkdtm/Makefile

3bad80dab94a16c9b7991105e3bffd5fe5957e9a - Merge tag 'char-misc-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Fri, 14 Jan 2022 16:02:28 +0100

Merge tag 'char-misc-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-miscPull char/misc and other driver updates from Greg KH: "Here is the large set of char, misc, and other "small" driver subsystem changes for 5.17-rc1. Lots of different things are in here for char/misc drivers such as: - habanalabs driver updates - mei driver updates - lkdtm driver updates - vmw_vmci driver updates - android binder driver updates - other small char/misc driver updates Also smaller driver subsystems have also been updated, including: - fpga subsystem updates - iio subsystem updates - soundwire subsystem updates - extcon subsystem updates - gnss subsystem updates - phy subsystem updates - coresight subsystem updates - firmware subsystem updates - comedi subsystem updates - mhi subsystem updates - speakup subsystem updates - rapidio subsystem updates - spmi subsystem updates - virtual driver updates - counter subsystem updates Too many individual changes to summarize, the shortlog contains the full details. All of these have been in linux-next for a while with no reported issues"* tag 'char-misc-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (406 commits) counter: 104-quad-8: Fix use-after-free by quad8_irq_handler dt-bindings: mux: Document mux-states property dt-bindings: ti-serdes-mux: Add defines for J721S2 SoC counter: remove old and now unused registration API counter: ti-eqep: Convert to new counter registration counter: stm32-lptimer-cnt: Convert to new counter registration counter: stm32-timer-cnt: Convert to new counter registration counter: microchip-tcb-capture: Convert to new counter registration counter: ftm-quaddec: Convert to new counter registration counter: intel-qep: Convert to new counter registration counter: interrupt-cnt: Convert to new counter registration counter: 104-quad-8: Convert to new counter registration counter: Update documentation for new counter registration functions counter: Provide alternative counter registration functions counter: stm32-timer-cnt: Convert to counter_priv() wrapper counter: stm32-lptimer-cnt: Convert to counter_priv() wrapper counter: ti-eqep: Convert to counter_priv() wrapper counter: ftm-quaddec: Convert to counter_priv() wrapper counter: intel-qep: Convert to counter_priv() wrapper counter: microchip-tcb-capture: Convert to counter_priv() wrapper ... List of files: /linux/drivers/misc/lkdtm/Makefile

bc93a22a19eb2b68a16ecf04cdf4b2ed65aaf398 - lkdtm: Fix content of section containing lkdtm_rodata_do_nothing()

Fri, 08 Oct 2021 18:58:40 +0200

lkdtm: Fix content of section containing lkdtm_rodata_do_nothing()On a kernel without CONFIG_STRICT_KERNEL_RWX, running EXEC_RODATAtest leads to "Illegal instruction" failure.Looking at the content of rodata_objcopy.o, we see that thefunction content zeroes only: Disassembly of section .rodata: 0000000000000000 <.lkdtm_rodata_do_nothing>: 0: 00 00 00 00 .long 0x0Add the contents flag in order to keep the content of the sectionwhile renaming it. Disassembly of section .rodata: 0000000000000000 <.lkdtm_rodata_do_nothing>: 0: 4e 80 00 20 blrFixes: e9e08a07385e ("lkdtm: support llvm-objcopy")Cc: stable@vger.kernel.orgCc: Kees Cook Cc: Arnd Bergmann Cc: Greg Kroah-Hartman Cc: Nick Desaulniers Cc: Nathan Chancellor Signed-off-by: Christophe Leroy Reviewed-by: Nick Desaulniers Signed-off-by: Kees Cook Link: https://lore.kernel.org/r/8900731fbc05fb8b0de18af7133a8fc07c3c53a1.1633712176.git.christophe.leroy@csgroup.eu List of files: /linux/drivers/misc/lkdtm/Makefile

c28573744b74eb6de19add503d6a986795c4c137 - powerpc/64s: Make hash MMU support configurable

Wed, 01 Dec 2021 15:41:51 +0100

powerpc/64s: Make hash MMU support configurableThis adds Kconfig selection which allows 64s hash MMU support to bedisabled. It can be disabled if radix support is enabled, the minimumsupported CPU type is POWER9 (or higher), and KVM is not selected.Signed-off-by: Nicholas Piggin Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20211201144153.2456614-17-npiggin@gmail.com List of files: /linux/drivers/misc/lkdtm/Makefile

01dd633e7aae169915fea89224acb7a2b688912b - drivers/misc/lkdtm: disable LTO for rodata.o

Fri, 11 Dec 2020 19:46:30 +0100

drivers/misc/lkdtm: disable LTO for rodata.oDisable LTO for rodata.o to allow objcopy to be used tomanipulate sections.Signed-off-by: Sami Tolvanen Acked-by: Kees Cook Signed-off-by: Kees Cook Link: https://lore.kernel.org/r/20201211184633.3213045-14-samitolvanen@google.com List of files: /linux/drivers/misc/lkdtm/Makefile

8a5be36b9303ae167468d4f5e1b3c090b9981396 - Merge tag 'powerpc-5.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Thu, 17 Dec 2020 22:34:25 +0100

Merge tag 'powerpc-5.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxPull powerpc updates from Michael Ellerman: - Switch to the generic C VDSO, as well as some cleanups of our VDSO setup/handling code. - Support for KUAP (Kernel User Access Prevention) on systems using the hashed page table MMU, using memory protection keys. - Better handling of PowerVM SMT8 systems where all threads of a core do not share an L2, allowing the scheduler to make better scheduling decisions. - Further improvements to our machine check handling. - Show registers when unwinding interrupt frames during stack traces. - Improvements to our pseries (PowerVM) partition migration code. - Several series from Christophe refactoring and cleaning up various parts of the 32-bit code. - Other smaller features, fixes & cleanups.Thanks to: Alan Modra, Alexey Kardashevskiy, Andrew Donnellan, AneeshKumar K.V, Ard Biesheuvel, Athira Rajeev, Balamuruhan S, Bill Wendling,Cédric Le Goater, Christophe Leroy, Christophe Lombard, Colin Ian King,Daniel Axtens, David Hildenbrand, Frederic Barrat, Ganesh Goudar,Gautham R. Shenoy, Geert Uytterhoeven, Giuseppe Sacco, Greg Kurz,Harish, Jan Kratochvil, Jordan Niethe, Kaixu Xia, Laurent Dufour,Leonardo Bras, Madhavan Srinivasan, Mahesh Salgaonkar, MathieuDesnoyers, Nathan Lynch, Nicholas Piggin, Oleg Nesterov, OliverO'Halloran, Oscar Salvador, Po-Hsu Lin, Qian Cai, Qinglang Miao, RandyDunlap, Ravi Bangoria, Sachin Sant, Sandipan Das, Sebastian AndrzejSiewior , Segher Boessenkool, Srikar Dronamraju, Tyrel Datwyler, UweKleine-König, Vincent Stehlé, Youling Tang, and Zhang Xiaoxu.* tag 'powerpc-5.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (304 commits) powerpc/32s: Fix cleanup_cpu_mmu_context() compile bug powerpc: Add config fragment for disabling -Werror powerpc/configs: Add ppc64le_allnoconfig target powerpc/powernv: Rate limit opal-elog read failure message powerpc/pseries/memhotplug: Quieten some DLPAR operations powerpc/ps3: use dma_mapping_error() powerpc: force inlining of csum_partial() to avoid multiple csum_partial() with GCC10 powerpc/perf: Fix Threshold Event Counter Multiplier width for P10 powerpc/mm: Fix hugetlb_free_pmd_range() and hugetlb_free_pud_range() KVM: PPC: Book3S HV: Fix mask size for emulated msgsndp KVM: PPC: fix comparison to bool warning KVM: PPC: Book3S: Assign boolean values to a bool variable powerpc: Inline setup_kup() powerpc/64s: Mark the kuap/kuep functions non __init KVM: PPC: Book3S HV: XIVE: Add a comment regarding VP numbering powerpc/xive: Improve error reporting of OPAL calls powerpc/xive: Simplify xive_do_source_eoi() powerpc/xive: Remove P9 DD1 flag XIVE_IRQ_FLAG_EOI_FW powerpc/xive: Remove P9 DD1 flag XIVE_IRQ_FLAG_MASK_FW powerpc/xive: Remove P9 DD1 flag XIVE_IRQ_FLAG_SHIFT_BUG ... List of files: /linux/drivers/misc/lkdtm/Makefile

febebaf366868a4204deb3955ef5dda17f676fc1 - drivers/misc/lkdtm: add new file in LKDTM to test fortified strscpy

Wed, 16 Dec 2020 05:43:54 +0100

drivers/misc/lkdtm: add new file in LKDTM to test fortified strscpyThis new test ensures that fortified strscpy has the same behavior thanvanilla strscpy (e.g. returning -E2BIG when src content is truncated).Finally, it generates a crash at runtime because there is a write overflowin destination string.Link: https://lkml.kernel.org/r/20201122162451.27551-5-laniel_francis@privacyrequired.comSigned-off-by: Francis Laniel Reviewed-by: Kees Cook Cc: Daniel Axtens Cc: Daniel Micay Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds List of files: /linux/drivers/misc/lkdtm/Makefile

2911ed9f47b47cb5ab87d03314b3b9fe008e607f - Merge tag 'char-misc-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Tue, 15 Dec 2020 23:10:09 +0100

Merge tag 'char-misc-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-miscPull char / misc driver updates from Greg KH: "Here is the big char/misc driver update for 5.11-rc1. Continuing the tradition of previous -rc1 pulls, there seems to be more and more tiny driver subsystems flowing through this tree. Lots of different things, all of which have been in linux-next for a while with no reported issues: - extcon driver updates - habannalab driver updates - mei driver updates - uio driver updates - binder fixes and features added - soundwire driver updates - mhi bus driver updates - phy driver updates - coresight driver updates - fpga driver updates - speakup driver updates - slimbus driver updates - various small char and misc driver updates"* tag 'char-misc-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (305 commits) extcon: max77693: Fix modalias string extcon: fsa9480: Support TI TSU6111 variant extcon: fsa9480: Rewrite bindings in YAML and extend dt-bindings: extcon: add binding for TUSB320 extcon: Add driver for TI TUSB320 slimbus: qcom: fix potential NULL dereference in qcom_slim_prg_slew() siox: Make remove callback return void siox: Use bus_type functions for probe, remove and shutdown spmi: Add driver shutdown support spmi: fix some coding style issues at the spmi core spmi: get rid of a warning when built with W=1 uio: uio_hv_generic: use devm_kzalloc() for private data alloc uio: uio_fsl_elbc_gpcm: use device-managed allocators uio: uio_aec: use devm_kzalloc() for uio_info object uio: uio_cif: use devm_kzalloc() for uio_info object uio: uio_netx: use devm_kzalloc() for or uio_info object uio: uio_mf624: use devm_kzalloc() for uio_info object uio: uio_sercos3: use device-managed functions for simple allocs uio: uio_dmem_genirq: finalize conversion of probe to devm_ handlers uio: uio_dmem_genirq: convert simple allocations to device-managed ... List of files: /linux/drivers/misc/lkdtm/Makefile

6d5a88cd0c1506115d71a4d3a26b60645c89df6c - lkdtm: disable KASAN for rodata.o

Tue, 15 Dec 2020 04:09:24 +0100

lkdtm: disable KASAN for rodata.oBuilding lkdtm with KASAN and Clang 11 or later results in the followingerror when attempting to load the module: kernel tried to execute NX-protected page - exploit attempt? (uid: 0) BUG: unable to handle page fault for address: ffffffffc019cd70 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0011) - permissions violation ... RIP: 0010:asan.module_ctor+0x0/0xffffffffffffa290 [lkdtm] ... Call Trace: do_init_module+0x17c/0x570 load_module+0xadee/0xd0b0 __x64_sys_finit_module+0x16c/0x1a0 do_syscall_64+0x34/0x50 entry_SYSCALL_64_after_hwframe+0x44/0xa9The reason is that rodata.o generates a dummy function that lives in.rodata to validate that .rodata can't be executed; however, Clang 11 addsKASAN globals support by generating module constructors to initializeglobals redzones. When Clang 11 adds a module constructor to rodata.o, itis also added to .rodata: any attempt to call it on initialization resultsin the above error.Therefore, disable KASAN instrumentation for rodata.o.Link: https://lkml.kernel.org/r/20201214191413.3164796-1-elver@google.comSigned-off-by: Marco Elver Cc: Kees Cook Cc: Arnd Bergmann Cc: Greg Kroah-Hartman Cc: Andrey Konovalov Cc: Dmitry Vyukov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds List of files: /linux/drivers/misc/lkdtm/Makefile

3f618ab3323407ee4c6a6734a37eb6e9663ebfb9 - lkdtm: don't move ctors to .rodata

Mon, 07 Dec 2020 18:05:33 +0100

lkdtm: don't move ctors to .rodataWhen building with KASAN and LKDTM, clang may implictly generate anasan.module_ctor function in the LKDTM rodata object. The Makefile movesthe lkdtm_rodata_do_nothing() function into .rodata by renaming thefile's .text section to .rodata, and consequently also moves the ctorfunction into .rodata, leading to a boot time crash (splat below) whenthe ctor is invoked by do_ctors().Let's prevent this by marking the function as noinstr rather thannotrace, and renaming the file's .noinstr.text to .rodata. Marking thefunction as noinstr will prevent tracing and kprobes, and will inhibitany undesireable compiler instrumentation.The ctor function (if any) will be placed in .text and will workcorrectly.Example splat before this patch is applied:[ 0.916359] Unable to handle kernel execute from non-executable memory at virtual address ffffa0006b60f5ac[ 0.922088] Mem abort info:[ 0.922828] ESR = 0x8600000e[ 0.923635] EC = 0x21: IABT (current EL), IL = 32 bits[ 0.925036] SET = 0, FnV = 0[ 0.925838] EA = 0, S1PTW = 0[ 0.926714] swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000000427b3000[ 0.928489] [ffffa0006b60f5ac] pgd=000000023ffff003, p4d=000000023ffff003, pud=000000023fffe003, pmd=0068000042000f01[ 0.931330] Internal error: Oops: 8600000e [#1] PREEMPT SMP[ 0.932806] Modules linked in:[ 0.933617] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.10.0-rc7 #2[ 0.935620] Hardware name: linux,dummy-virt (DT)[ 0.936924] pstate: 40400005 (nZcv daif +PAN -UAO -TCO BTYPE=--)[ 0.938609] pc : asan.module_ctor+0x0/0x14[ 0.939759] lr : do_basic_setup+0x4c/0x70[ 0.940889] sp : ffff27b600177e30[ 0.941815] x29: ffff27b600177e30 x28: 0000000000000000[ 0.943306] x27: 0000000000000000 x26: 0000000000000000[ 0.944803] x25: 0000000000000000 x24: 0000000000000000[ 0.946289] x23: 0000000000000001 x22: 0000000000000000[ 0.947777] x21: ffffa0006bf4a890 x20: ffffa0006befb6c0[ 0.949271] x19: ffffa0006bef9358 x18: 0000000000000068[ 0.950756] x17: fffffffffffffff8 x16: 0000000000000000[ 0.952246] x15: 0000000000000000 x14: 0000000000000000[ 0.953734] x13: 00000000838a16d5 x12: 0000000000000001[ 0.955223] x11: ffff94000da74041 x10: dfffa00000000000[ 0.956715] x9 : 0000000000000000 x8 : ffffa0006b60f5ac[ 0.958199] x7 : f9f9f9f9f9f9f9f9 x6 : 000000000000003f[ 0.959683] x5 : 0000000000000040 x4 : 0000000000000000[ 0.961178] x3 : ffffa0006bdc15a0 x2 : 0000000000000005[ 0.962662] x1 : 00000000000000f9 x0 : ffffa0006bef9350[ 0.964155] Call trace:[ 0.964844] asan.module_ctor+0x0/0x14[ 0.965895] kernel_init_freeable+0x158/0x198[ 0.967115] kernel_init+0x14/0x19c[ 0.968104] ret_from_fork+0x10/0x30[ 0.969110] Code: 00000003 00000000 00000000 00000000 (00000000)[ 0.970815] ---[ end trace b5339784e20d015c ]---Cc: Arnd Bergmann Cc: Greg Kroah-Hartman Cc: Kees Cook Acked-by: Kees Cook Signed-off-by: Mark Rutland Link: https://lore.kernel.org/r/20201207170533.10738-1-mark.rutland@arm.comSigned-off-by: Greg Kroah-Hartman List of files: /linux/drivers/misc/lkdtm/Makefile

3ba150fb21207e4a7f4b600eb2dbbe83f94571fe - lkdtm/powerpc: Add SLB multihit test

Mon, 30 Nov 2020 09:30:57 +0100

lkdtm/powerpc: Add SLB multihit testTo check machine check handling, add support to inject slbmultihit errors.Co-developed-by: Mahesh Salgaonkar Signed-off-by: Mahesh Salgaonkar Signed-off-by: Ganesh Goudar [mpe: Use CONFIG_PPC_BOOK3S_64 to fix compile errors reported by lkp@intel.com]Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20201130083057.135610-1-ganeshgr@linux.ibm.com List of files: /linux/drivers/misc/lkdtm/Makefile

b0eb93cfd516201ccf0e4d36e226cfe1b16cc1fe - lkdtm: Add Control Flow Integrity test

Thu, 08 Aug 2019 20:37:45 +0200

lkdtm: Add Control Flow Integrity testThis adds a simple test for forward CFI (indirect function calls) withfunction prototype granularity (as implemented by Clang's CFI).Signed-off-by: Kees Cook List of files: /linux/drivers/misc/lkdtm/Makefile

e9e08a07385e08f1a7f85c5d1e345c21c9564963 - lkdtm: support llvm-objcopy

Wed, 15 May 2019 20:24:41 +0200

lkdtm: support llvm-objcopyWith CONFIG_LKDTM=y and make OBJCOPY=llvm-objcopy, llvm-objcopy errors:llvm-objcopy: error: --set-section-flags=.text conflicts with--rename-section=.text=.rodataRather than support setting flags then renaming sections vs renamingthen setting flags, it's simpler to just change both at the same timevia --rename-section. Adding the load flag is required for GNU objcopyto mark .rodata Type as PROGBITS after the rename.This can be verified with:$ readelf -S drivers/misc/lkdtm/rodata_objcopy.o...Section Headers: [Nr] Name Type Address Offset Size EntSize Flags Link Info Align... [ 1] .rodata PROGBITS 0000000000000000 00000040 0000000000000004 0000000000000000 A 0 0 4...Which shows that .text is now renamed .rodata, the alloc flag A is set,the type is PROGBITS, and the section is not flagged as writeable W.Cc: stable@vger.kernel.orgLink: https://sourceware.org/bugzilla/show_bug.cgi?id=24554Link: https://github.com/ClangBuiltLinux/linux/issues/448Reported-by: Nathan Chancellor Suggested-by: Alan Modra Suggested-by: Jordan Rupprect Suggested-by: Kees Cook Acked-by: Kees Cook Reviewed-by: Nathan Chancellor Signed-off-by: Nick Desaulniers Signed-off-by: Greg Kroah-Hartman List of files: /linux/drivers/misc/lkdtm/Makefile

f90d1e0c7804b52e12fea501aa46a12c1ff6a567 - lkdtm: Add a test for STACKLEAK

Fri, 17 Aug 2018 00:17:00 +0200

lkdtm: Add a test for STACKLEAKIntroduce an lkdtm test for the STACKLEAK feature: check that thecurrent task stack is properly erased (filled with STACKLEAK_POISON).Signed-off-by: Alexander Popov Signed-off-by: Tycho Andersen Tested-by: Laura Abbott Signed-off-by: Kees Cook List of files: /linux/drivers/misc/lkdtm/Makefile

039a1c42058db54692a6d4497508bd48555f29fb - lkdtm: Relocate code to subdirectory

Tue, 06 Mar 2018 23:58:09 +0100

lkdtm: Relocate code to subdirectoryThe LKDTM modules keep expanding, and it's getting weird to have each fileget a prefix. Instead, move to a subdirectory for cleaner handling.Signed-off-by: Kees Cook Signed-off-by: Greg Kroah-Hartman List of files: /linux/drivers/misc/lkdtm/Makefile