# 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 <torvalds@linux-foundation.org>
# 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/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-gcc --version
# < git log --format=%s --max-count=1 be65e2595b4c1fbeceba336d8ee83406726b1d8d
# < make -s -j 48 ARCH=arm O=/kisskb/build/linus_multi_v7_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-  multi_v7_defconfig
# make -s -j 48 ARCH=arm O=/kisskb/build/linus_multi_v7_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-  
<stdin>:1332:2: warning: #warning syscall io_pgetevents not implemented [-Wcpp]
/kisskb/src/arch/arm/crypto/Makefile:27: These CRC Extensions modules need binutils 2.23 or higher
/kisskb/src/arch/arm/crypto/Makefile:28:  crc32-arm-ce.o
/kisskb/src/arch/arm/crypto/Makefile:37: These ARMv8 Crypto Extensions modules need binutils 2.23 or higher
/kisskb/src/arch/arm/crypto/Makefile:38:  aes-arm-ce.o sha1-arm-ce.o sha2-arm-ce.o ghash-arm-ce.o
/kisskb/src/kernel/cgroup/cgroup-v1.c: In function 'cgroup1_mount':
/kisskb/src/kernel/cgroup/cgroup-v1.c:1256:20: warning: 'root' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/rcu/srcutree.c: In function 'init_srcu_struct_fields':
/kisskb/src/kernel/rcu/srcutree.c:148:32: warning: 'levelspread[<Ucb40>]' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/rcu/srcutree.c:96:6: note: 'levelspread[<Ucb40>]' was declared here
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:185:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/base/regmap/regmap.c: In function 'regmap_raw_read':
/kisskb/src/drivers/base/regmap/regmap.c:2511:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/base/regmap/regmap.c: In function '_regmap_raw_write':
/kisskb/src/drivers/base/regmap/regmap.c:1833:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/dma-buf/reservation.c: In function 'reservation_object_add_shared_fence':
/kisskb/src/drivers/dma-buf/reservation.c:226:6: warning: 'k' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/sound/hda/hdac_regmap.c: In function 'hda_reg_write':
/kisskb/src/sound/hda/hdac_regmap.c:282:16: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/i2c/i2c-core-base.c: In function 'i2c_generic_scl_recovery':
/kisskb/src/drivers/i2c/i2c-core-base.c:235:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c: In function 'proc_reg_open':
/kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c:341:21: note: 'pdeo' was declared here
/kisskb/src/net/mac80211/mlme.c: In function 'ieee80211_rx_mgmt_beacon':
/kisskb/src/net/mac80211/mlme.c:1511:3: warning: 'pwr_level_cisco' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/mac80211/mlme.c:1468:6: note: 'pwr_level_cisco' was declared here
/kisskb/src/drivers/clk/sunxi-ng/ccu_mux.c: In function 'ccu_mux_helper_determine_rate':
/kisskb/src/drivers/clk/sunxi-ng/ccu_mux.c:153:22: warning: 'best_parent' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c: In function 'get_scale_config':
/kisskb/src/drivers/gpu/drm/msm/disp/mdp5/mdp5.xml.h:1036:16: warning: 'uv_filter' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c:706:22: note: 'uv_filter' was declared here
/kisskb/src/drivers/soc/qcom/wcnss_ctrl.c: In function 'wcnss_async_probe':
/kisskb/src/drivers/soc/qcom/wcnss_ctrl.c:307:5: warning: 'expect_cbc' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/gpu/drm/sun4i/sun4i_tcon.c: In function 'sun4i_tcon_bind':
/kisskb/src/drivers/gpu/drm/sun4i/sun4i_tcon.c:1041:35: warning: 'has_lvds_alt' may be used uninitialized in this function [-Wuninitialized]
arch/arm/boot/dts/qcom-apq8064-arrow-sd-600eval.dtb: Warning (graph_endpoint): /soc/mdp@5100000/ports/port@3/endpoint: graph connection to node '/soc/hdmi-tx@4a00000/ports/port@0/endpoint' is not bidirectional
/kisskb/src/drivers/gpu/drm/nouveau/nvkm/subdev/top/gk104.c: In function 'gk104_top_oneinit':
/kisskb/src/drivers/gpu/drm/nouveau/nvkm/subdev/top/gk104.c:102:1: warning: 'inst' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/gpu/drm/nouveau/nvkm/subdev/top/gk104.c:102:1: warning: 'type' may be used uninitialized in this function [-Wuninitialized]
Completed OK
# rm -rf /kisskb/build/linus_multi_v7_defconfig_arm
# Build took: 0:02:45.972617