# git rev-parse -q --verify be65e2595b4c1fbeceba336d8ee83406726b1d8d^{commit} be65e2595b4c1fbeceba336d8ee83406726b1d8d already have revision, skipping fetch # git checkout -q -f -B kisskb be65e2595b4c1fbeceba336d8ee83406726b1d8d # git clean -qxdf # < git log -1 # commit be65e2595b4c1fbeceba336d8ee83406726b1d8d # Merge: 5404525b98c2 d1c392c9e2a3 # Author: Linus Torvalds # Date: Thu Sep 6 09:06:49 2018 -0700 # # Merge tag 'trace-v4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace # # Pull tracing fixes from Steven Rostedt: # "This fixes two annoying bugs: # # - The first one is a side effect caused by using SRCU for rcuidle # tracepoints. It seems that the perf was depending on the rcuidle # tracepoints to make RCU watch when it wasn't. # # The real fix will be to have perf use SRCU instead of depending on # RCU watching, but that can't be done until SRCU is safe to use in # NMI context (Paul's working on that). # # - The second bug fix is for a bug that's been periodically making my # tests fail randomly for some time. I haven't had time to track it # down, but finally have. It has to do with stressing NMIs (via perf) # while enabling or disabling ftrace function handling with lockdep # enabled. # # If an interrupt happens and just as it returns, it sets lockdep # back to "interrupts enabled" but before it returns an NMI is # triggered, and if this happens while printk_nmi_enter has a # breakpoint attached to it (because ftrace is converting it to or # from nop to call fentry), the breakpoint trap also calls into # lockdep, and since returning from the NMI to a interrupt handler, # interrupts were disabled when the NMI went off, lockdep keeps its # state as interrupts disabled when it returns back from the # interrupt handler where interrupts are enabled. # # This causes lockdep_assert_irqs_enabled() to trigger a false # positive" # # * tag 'trace-v4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: # printk/tracing: Do not trace printk_nmi_enter() # tracing: Add back in rcu_irq_enter/exit_irqson() for rcuidle tracepoints # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-gcc --version # < git log --format=%s --max-count=1 be65e2595b4c1fbeceba336d8ee83406726b1d8d # < make -s -j 120 ARCH=arm64 O=/kisskb/build/linus_arm64-allmodconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux- allmodconfig # make -s -j 120 ARCH=arm64 O=/kisskb/build/linus_arm64-allmodconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux- /kisskb/src/scripts/unifdef.c: In function 'Mpass': /kisskb/src/scripts/unifdef.c:453:28: warning: 'strncpy' output truncated before terminating nul copying 4 bytes from a string of the same length [-Wstringop-truncation] static void Mpass (void) { strncpy(keyword, "if ", 4); Pelif(); } ^~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from /kisskb/src/arch/arm64/include/asm/processor.h:41, from /kisskb/src/include/linux/rcupdate.h:43, from /kisskb/src/include/linux/rculist.h:11, from /kisskb/src/include/linux/pid.h:5, from /kisskb/src/include/linux/sched.h:14, from /kisskb/src/kernel/debug/kdb/kdb_support.c:15: In function 'strncpy', inlined from 'kallsyms_symbol_next' at /kisskb/src/kernel/debug/kdb/kdb_support.c:239:4: /kisskb/src/include/linux/string.h:246:9: warning: '__builtin_strncpy' specified bound depends on the length of the source argument [-Wstringop-overflow=] return __builtin_strncpy(p, q, size); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /kisskb/src/kernel/debug/kdb/kdb_support.c: In function 'kallsyms_symbol_next': /kisskb/src/include/linux/string.h:267:10: note: length computed here return __builtin_strlen(p); ^~~~~~~~~~~~~~~~~~~ /kisskb/src/lib/ubsan.c:432:1: warning: ignoring attribute 'noreturn' in declaration of a built-in function '__ubsan_handle_builtin_unreachable' because it conflicts with attribute 'const' [-Wattributes] { ^ : note: previous declaration here In file included from /kisskb/src/arch/arm64/include/asm/processor.h:41, from /kisskb/src/include/linux/rcupdate.h:43, from /kisskb/src/include/linux/rculist.h:11, from /kisskb/src/include/linux/pid.h:5, from /kisskb/src/include/linux/sched.h:14, from /kisskb/src/arch/arm64/include/asm/compat.h:25, from /kisskb/src/arch/arm64/include/asm/stat.h:24, from /kisskb/src/include/linux/stat.h:6, from /kisskb/src/include/linux/module.h:10, from /kisskb/src/lib/test_hexdump.c:8: In function 'strncpy', inlined from 'test_hexdump_prepare_test.isra.0' at /kisskb/src/lib/test_hexdump.c:102:3: /kisskb/src/include/linux/string.h:246:9: warning: '__builtin_strncpy' specified bound depends on the length of the source argument [-Wstringop-overflow=] return __builtin_strncpy(p, q, size); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /kisskb/src/lib/test_hexdump.c: In function 'test_hexdump_prepare_test.isra.0': /kisskb/src/include/linux/string.h:267:10: note: length computed here return __builtin_strlen(p); ^~~~~~~~~~~~~~~~~~~ /kisskb/src/drivers/isdn/hardware/eicon/message.c: In function 'sig_ind': /kisskb/src/drivers/isdn/hardware/eicon/message.c:5985:1: warning: the frame size of 2096 bytes is larger than 2048 bytes [-Wframe-larger-than=] } ^ Completed OK # rm -rf /kisskb/build/linus_arm64-allmodconfig_arm64-gcc8 # Build took: 0:05:19.800037