Buildresult: linus/um-allyesconfig/um-x86_64 built on Nov 28 2019, 10:26

kisskb

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Status:	Failed
Date/Time:	Nov 28 2019, 10:26
Duration:	0:05:32.074696
Builder:	blade46
Revision:	Merge tag 'trace-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace (`95f1fa9e3418d50ce099e67280b5497b9c93843b)`
Target:	linus/um-allyesconfig/um-x86_64
Branch:	linus
Compiler:	um-x86_64 (x86_64-linux-gcc.br_real (Buildroot 2017.05) 5.4.0 / GNU ld (GNU Binutils) 2.27)
Config:	allyesconfig (download)
Log:	Download original Possible errors drivers/misc/lkdtm/bugs.c:284:8: error: implicit declaration of function 'native_read_cr4' [-Werror=implicit-function-declaration] drivers/misc/lkdtm/bugs.c:286:13: error: 'X86_CR4_SMEP' undeclared (first use in this function) drivers/misc/lkdtm/bugs.c:293:2: error: implicit declaration of function 'native_write_cr4' [-Werror=implicit-function-declaration] cc1: some warnings being treated as errors make[4]: * [scripts/Makefile.build:265: drivers/misc/lkdtm/bugs.o] Error 1 make[3]: * [scripts/Makefile.build:509: drivers/misc/lkdtm] Error 2 make[2]: * [scripts/Makefile.build:509: drivers/misc] Error 2 make[1]: * [Makefile:1652: drivers] Error 2 make: *** [Makefile:179: sub-make] Error 2 Possible warnings (26) WARNING: unmet direct dependencies detected for GPIO_GENERIC WARNING: unmet direct dependencies detected for GPIO_GENERIC WARNING: unmet direct dependencies detected for GPIO_GENERIC WARNING: unmet direct dependencies detected for GPIO_GENERIC arch/um/os-Linux/signal.c:51:1: warning: the frame size of 2976 bytes is larger than 2048 bytes [-Wframe-larger-than=] arch/um/os-Linux/signal.c:95:1: warning: the frame size of 2960 bytes is larger than 2048 bytes [-Wframe-larger-than=] security/apparmor/policy_unpack.c:523:9: warning: 'pos' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/block/null_blk_main.c:307:48: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] lib/lz4/lz4hc_compress.c:579:1: warning: the frame size of 2144 bytes is larger than 2048 bytes [-Wframe-larger-than=] Full Log # git rev-parse -q --verify 95f1fa9e3418d50ce099e67280b5497b9c93843b^{commit} 95f1fa9e3418d50ce099e67280b5497b9c93843b already have revision, skipping fetch # git checkout -q -f -B kisskb 95f1fa9e3418d50ce099e67280b5497b9c93843b # git clean -qxdf # < git log -1 # commit 95f1fa9e3418d50ce099e67280b5497b9c93843b # Merge: 477093b3e144 16c0f03f629a # Author: Linus Torvalds <torvalds@linux-foundation.org> # Date: Wed Nov 27 11:42:01 2019 -0800 # # Merge tag 'trace-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace # # Pull tracing updates from Steven Rostedt: # "New tracing features: # # - New PERMANENT flag to ftrace_ops when attaching a callback to a # function. # # As /proc/sys/kernel/ftrace_enabled when set to zero will disable # all attached callbacks in ftrace, this has a detrimental impact on # live kernel tracing, as it disables all that it patched. If a # ftrace_ops is registered to ftrace with the PERMANENT flag set, it # will prevent ftrace_enabled from being disabled, and if # ftrace_enabled is already disabled, it will prevent a ftrace_ops # with PREMANENT flag set from being registered. # # - New register_ftrace_direct(). # # As eBPF would like to register its own trampolines to be called by # the ftrace nop locations directly, without going through the ftrace # trampoline, this function has been added. This allows for eBPF # trampolines to live along side of ftrace, perf, kprobe and live # patching. It also utilizes the ftrace enabled_functions file that # keeps track of functions that have been modified in the kernel, to # allow for security auditing. # # - Allow for kernel internal use of ftrace instances. # # Subsystems in the kernel can now create and destroy their own # tracing instances which allows them to have their own tracing # buffer, and be able to record events without worrying about other # users from writing over their data. # # - New seq_buf_hex_dump() that lets users use the hex_dump() in their # seq_buf usage. # # - Notifications now added to tracing_max_latency to allow user space # to know when a new max latency is hit by one of the latency # tracers. # # - Wider spread use of generic compare operations for use of bsearch # and friends. # # - More synthetic event fields may be defined (32 up from 16) # # - Use of xarray for architectures with sparse system calls, for the # system call trace events. # # This along with small clean ups and fixes" # # * tag 'trace-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (51 commits) # tracing: Enable syscall optimization for MIPS # tracing: Use xarray for syscall trace events # tracing: Sample module to demonstrate kernel access to Ftrace instances. # tracing: Adding new functions for kernel access to Ftrace instances # tracing: Fix Kconfig indentation # ring-buffer: Fix typos in function ring_buffer_producer # ftrace: Use BIT() macro # ftrace: Return ENOTSUPP when DYNAMIC_FTRACE_WITH_DIRECT_CALLS is not configured # ftrace: Rename ftrace_graph_stub to ftrace_stub_graph # ftrace: Add a helper function to modify_ftrace_direct() to allow arch optimization # ftrace: Add helper find_direct_entry() to consolidate code # ftrace: Add another check for match in register_ftrace_direct() # ftrace: Fix accounting bug with direct->count in register_ftrace_direct() # ftrace/selftests: Fix spelling mistake "wakeing" -> "waking" # tracing: Increase SYNTH_FIELDS_MAX for synthetic_events # ftrace/samples: Add a sample module that implements modify_ftrace_direct() # ftrace: Add modify_ftrace_direct() # tracing: Add missing "inline" in stub function of latency_fsnotify() # tracing: Remove stray tab in TRACE_EVAL_MAP_FILE's help text # tracing: Use seq_buf_hex_dump() to dump buffers # ... # < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-gcc --version # < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-ld --version # < git log --format=%s --max-count=1 95f1fa9e3418d50ce099e67280b5497b9c93843b # < make -s -j 32 ARCH=um O=/kisskb/build/linus_um-allyesconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 allyesconfig WARNING: unmet direct dependencies detected for GPIO_GENERIC Depends on [n]: GPIOLIB [=y] && HAS_IOMEM [=n] Selected by [y]: - PINCTRL_EQUILIBRIUM [=y] && PINCTRL [=y] # Added to kconfig CONFIG_STANDALONE=y # Added to kconfig CONFIG_KCOV=n # Added to kconfig CONFIG_GCC_PLUGINS=n # Added to kconfig CONFIG_GCC_PLUGIN_CYC_COMPLEXITY=n # Added to kconfig CONFIG_GCC_PLUGIN_SANCOV=n # Added to kconfig CONFIG_GCC_PLUGIN_LATENT_ENTROPY=n # Added to kconfig CONFIG_GCC_PLUGIN_STRUCTLEAK=n # Added to kconfig CONFIG_GCC_PLUGIN_RANDSTRUCT=n # Added to kconfig CONFIG_UML_NET=n # Added to kconfig CONFIG_UML_NET_ETHERTAP=n # Added to kconfig CONFIG_UML_NET_TUNTAP=n # Added to kconfig CONFIG_UML_NET_SLIP=n # Added to kconfig CONFIG_UML_NET_DAEMON=n # Added to kconfig CONFIG_UML_NET_VDE=n # Added to kconfig CONFIG_UML_NET_MCAST=n # Added to kconfig CONFIG_UML_NET_PCAP=n # Added to kconfig CONFIG_UML_NET_SLIRP=n # Added to kconfig CONFIG_GCOV_KERNEL=n # yes \n \| make -s -j 32 ARCH=um O=/kisskb/build/linus_um-allyesconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 oldconfig yes: standard output: Broken pipe # make -s -j 32 ARCH=um O=/kisskb/build/linus_um-allyesconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 WARNING: unmet direct dependencies detected for GPIO_GENERIC Depends on [n]: GPIOLIB [=y] && HAS_IOMEM [=n] Selected by [y]: - PINCTRL_EQUILIBRIUM [=y] && PINCTRL [=y] WARNING: unmet direct dependencies detected for GPIO_GENERIC Depends on [n]: GPIOLIB [=y] && HAS_IOMEM [=n] Selected by [y]: - PINCTRL_EQUILIBRIUM [=y] && PINCTRL [=y] WARNING: unmet direct dependencies detected for GPIO_GENERIC Depends on [n]: GPIOLIB [=y] && HAS_IOMEM [=n] Selected by [y]: - PINCTRL_EQUILIBRIUM [=y] && PINCTRL [=y] /kisskb/src/arch/um/os-Linux/signal.c: In function 'sig_handler_common': /kisskb/src/arch/um/os-Linux/signal.c:51:1: warning: the frame size of 2976 bytes is larger than 2048 bytes [-Wframe-larger-than=] } ^ /kisskb/src/arch/um/os-Linux/signal.c: In function 'timer_real_alarm_handler': /kisskb/src/arch/um/os-Linux/signal.c:95:1: warning: the frame size of 2960 bytes is larger than 2048 bytes [-Wframe-larger-than=] } ^ /kisskb/src/security/apparmor/policy_unpack.c: In function 'unpack_profile': /kisskb/src/security/apparmor/policy_unpack.c:523:9: warning: 'pos' may be used uninitialized in this function [-Wmaybe-uninitialized] str[pos] = ':'; ^ /kisskb/src/security/apparmor/policy_unpack.c:494:14: note: 'pos' was declared here int c, j, pos, size2 = unpack_strdup(e, &str, NULL); ^ /kisskb/src/drivers/block/null_blk_main.c: In function 'nullb_device_zone_nr_conv_store': /kisskb/src/drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] dev->NAME = new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:279:7: note: 'new_value' was declared here TYPE new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:327:1: note: in expansion of macro 'NULLB_DEVICE_ATTR' NULLB_DEVICE_ATTR(zone_nr_conv, uint, NULL); ^ /kisskb/src/drivers/block/null_blk_main.c: In function 'nullb_device_mbps_store': /kisskb/src/drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] dev->NAME = new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:279:7: note: 'new_value' was declared here TYPE new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:323:1: note: in expansion of macro 'NULLB_DEVICE_ATTR' NULLB_DEVICE_ATTR(mbps, uint, NULL); ^ /kisskb/src/drivers/block/null_blk_main.c: In function 'nullb_device_index_store': /kisskb/src/drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] dev->NAME = new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:279:7: note: 'new_value' was declared here TYPE new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:318:1: note: in expansion of macro 'NULLB_DEVICE_ATTR' NULLB_DEVICE_ATTR(index, uint, NULL); ^ /kisskb/src/drivers/block/null_blk_main.c: In function 'nullb_device_hw_queue_depth_store': /kisskb/src/drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] dev->NAME = new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:279:7: note: 'new_value' was declared here TYPE new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:317:1: note: in expansion of macro 'NULLB_DEVICE_ATTR' NULLB_DEVICE_ATTR(hw_queue_depth, uint, NULL); ^ /kisskb/src/drivers/block/null_blk_main.c: In function 'nullb_device_irqmode_store': /kisskb/src/drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] dev->NAME = new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:279:7: note: 'new_value' was declared here TYPE new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:316:1: note: in expansion of macro 'NULLB_DEVICE_ATTR' NULLB_DEVICE_ATTR(irqmode, uint, NULL); ^ /kisskb/src/drivers/block/null_blk_main.c: In function 'nullb_device_blocksize_store': /kisskb/src/drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] dev->NAME = new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:279:7: note: 'new_value' was declared here TYPE new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:315:1: note: in expansion of macro 'NULLB_DEVICE_ATTR' NULLB_DEVICE_ATTR(blocksize, uint, NULL); ^ /kisskb/src/drivers/block/null_blk_main.c: In function 'nullb_device_queue_mode_store': /kisskb/src/drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] dev->NAME = new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:279:7: note: 'new_value' was declared here TYPE new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:314:1: note: in expansion of macro 'NULLB_DEVICE_ATTR' NULLB_DEVICE_ATTR(queue_mode, uint, NULL); ^ /kisskb/src/drivers/block/null_blk_main.c: In function 'nullb_device_home_node_store': /kisskb/src/drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] dev->NAME = new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:279:7: note: 'new_value' was declared here TYPE new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:313:1: note: in expansion of macro 'NULLB_DEVICE_ATTR' NULLB_DEVICE_ATTR(home_node, uint, NULL); ^ /kisskb/src/drivers/block/null_blk_main.c: In function 'nullb_device_zone_size_store': /kisskb/src/drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] dev->NAME = new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:279:7: note: 'new_value' was declared here TYPE new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:326:1: note: in expansion of macro 'NULLB_DEVICE_ATTR' NULLB_DEVICE_ATTR(zone_size, ulong, NULL); ^ /kisskb/src/drivers/block/null_blk_main.c: In function 'nullb_device_cache_size_store': /kisskb/src/drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] dev->NAME = new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:279:7: note: 'new_value' was declared here TYPE new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:324:1: note: in expansion of macro 'NULLB_DEVICE_ATTR' NULLB_DEVICE_ATTR(cache_size, ulong, NULL); ^ /kisskb/src/drivers/block/null_blk_main.c: In function 'nullb_device_completion_nsec_store': /kisskb/src/drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] dev->NAME = new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:279:7: note: 'new_value' was declared here TYPE new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:311:1: note: in expansion of macro 'NULLB_DEVICE_ATTR' NULLB_DEVICE_ATTR(completion_nsec, ulong, NULL); ^ /kisskb/src/drivers/block/null_blk_main.c: In function 'nullb_device_size_store': /kisskb/src/drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] dev->NAME = new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:279:7: note: 'new_value' was declared here TYPE new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:310:1: note: in expansion of macro 'NULLB_DEVICE_ATTR' NULLB_DEVICE_ATTR(size, ulong, NULL); ^ /kisskb/src/drivers/block/null_blk_main.c: In function 'nullb_device_zoned_store': /kisskb/src/drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] dev->NAME = new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:279:7: note: 'new_value' was declared here TYPE new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:325:1: note: in expansion of macro 'NULLB_DEVICE_ATTR' NULLB_DEVICE_ATTR(zoned, bool, NULL); ^ /kisskb/src/drivers/block/null_blk_main.c: In function 'nullb_device_discard_store': /kisskb/src/drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] dev->NAME = new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:279:7: note: 'new_value' was declared here TYPE new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:322:1: note: in expansion of macro 'NULLB_DEVICE_ATTR' NULLB_DEVICE_ATTR(discard, bool, NULL); ^ /kisskb/src/drivers/block/null_blk_main.c: In function 'nullb_device_memory_backed_store': /kisskb/src/drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] dev->NAME = new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:279:7: note: 'new_value' was declared here TYPE new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:321:1: note: in expansion of macro 'NULLB_DEVICE_ATTR' NULLB_DEVICE_ATTR(memory_backed, bool, NULL); ^ /kisskb/src/drivers/block/null_blk_main.c: In function 'nullb_device_use_per_node_hctx_store': /kisskb/src/drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] dev->NAME = new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:279:7: note: 'new_value' was declared here TYPE new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:320:1: note: in expansion of macro 'NULLB_DEVICE_ATTR' NULLB_DEVICE_ATTR(use_per_node_hctx, bool, NULL); ^ /kisskb/src/drivers/block/null_blk_main.c: In function 'nullb_device_blocking_store': /kisskb/src/drivers/block/null_blk_main.c:291:12: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] dev->NAME = new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:279:7: note: 'new_value' was declared here TYPE new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:319:1: note: in expansion of macro 'NULLB_DEVICE_ATTR' NULLB_DEVICE_ATTR(blocking, bool, NULL); ^ /kisskb/src/drivers/block/null_blk_main.c: In function 'nullb_device_submit_queues_store': /kisskb/src/drivers/block/null_blk_main.c:307:48: warning: 'new_value' may be used uninitialized in this function [-Wmaybe-uninitialized] return set->nr_hw_queues == submit_queues ? 0 : -ENOMEM; ^ /kisskb/src/drivers/block/null_blk_main.c:279:7: note: 'new_value' was declared here TYPE new_value; \ ^ /kisskb/src/drivers/block/null_blk_main.c:312:1: note: in expansion of macro 'NULLB_DEVICE_ATTR' NULLB_DEVICE_ATTR(submit_queues, uint, nullb_apply_submit_queues); ^ /kisskb/src/lib/lz4/lz4hc_compress.c: In function 'LZ4HC_compress_generic': /kisskb/src/lib/lz4/lz4hc_compress.c:579:1: warning: the frame size of 2144 bytes is larger than 2048 bytes [-Wframe-larger-than=] } ^ /kisskb/src/drivers/misc/lkdtm/bugs.c: In function 'lkdtm_UNSET_SMEP': /kisskb/src/drivers/misc/lkdtm/bugs.c:284:8: error: implicit declaration of function 'native_read_cr4' [-Werror=implicit-function-declaration] cr4 = native_read_cr4(); ^ /kisskb/src/drivers/misc/lkdtm/bugs.c:286:13: error: 'X86_CR4_SMEP' undeclared (first use in this function) if ((cr4 & X86_CR4_SMEP) != X86_CR4_SMEP) { ^ /kisskb/src/drivers/misc/lkdtm/bugs.c:286:13: note: each undeclared identifier is reported only once for each function it appears in /kisskb/src/drivers/misc/lkdtm/bugs.c:293:2: error: implicit declaration of function 'native_write_cr4' [-Werror=implicit-function-declaration] native_write_cr4(cr4); ^ cc1: some warnings being treated as errors make[4]: * [/kisskb/src/scripts/Makefile.build:265: drivers/misc/lkdtm/bugs.o] Error 1 make[3]: * [/kisskb/src/scripts/Makefile.build:509: drivers/misc/lkdtm] Error 2 make[3]: * Waiting for unfinished jobs.... make[2]: * [/kisskb/src/scripts/Makefile.build:509: drivers/misc] Error 2 make[2]: * Waiting for unfinished jobs.... make[1]: * [/kisskb/src/Makefile:1652: drivers] Error 2 make[1]: * Waiting for unfinished jobs.... make: * [Makefile:179: sub-make] Error 2 Command 'make -s -j 32 ARCH=um O=/kisskb/build/linus_um-allyesconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 ' returned non-zero exit status 2 # rm -rf /kisskb/build/linus_um-allyesconfig_um-x86_64 # Build took: 0:05:32.074696

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