# 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/i386-linux/bin/i386-linux-gcc --version
# < git log --format=%s --max-count=1 be65e2595b4c1fbeceba336d8ee83406726b1d8d
# < make -s -j 120 ARCH=i386 O=/kisskb/build/linus-rand_i386-randconfig_i386 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/i386-linux/bin/i386-linux-  randconfig
KCONFIG_SEED=0x32625635
# Added to kconfig CONFIG_STANDALONE=y
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# yes \n | make -s -j 120 ARCH=i386 O=/kisskb/build/linus-rand_i386-randconfig_i386 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/i386-linux/bin/i386-linux-  oldconfig
yes: standard output: Broken pipe
# make -s -j 120 ARCH=i386 O=/kisskb/build/linus-rand_i386-randconfig_i386 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/i386-linux/bin/i386-linux-  
/kisskb/src/kernel/rcu/srcutree.c: In function 'init_srcu_struct_nodes':
/kisskb/src/kernel/rcu/srcutree.c:148:32: warning: 'levelspread[<U 500>]' may be used uninitialized in this function [-Wuninitialized]
/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/arch/x86/kernel/apic/io_apic.c: In function 'mp_map_pin_to_irq':
/kisskb/src/arch/x86/kernel/apic/io_apic.c:1034:6: warning: 'irq' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/arch/x86/kernel/e820.c: In function 'e820__setup_pci_gap':
/kisskb/src/arch/x86/kernel/e820.c:651:16: warning: 'gapstart' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/arch/x86/kernel/hw_breakpoint.c: In function 'hw_breakpoint_arch_parse':
/kisskb/src/arch/x86/kernel/hw_breakpoint.c:366:18: warning: 'align' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/ipc/shm.c: In function 'ksys_shmdt':
/kisskb/src/ipc/shm.c:1686:59: warning: 'file' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/mm/ksm.c: In function 'stable_node_dup':
/kisskb/src/mm/ksm.c:1395:15: warning: 'found_rmap_hlist_len' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/block/null_blk_main.c: In function 'null_handle_cmd':
/kisskb/src/drivers/block/null_blk_main.c:1214:35: warning: 'size' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/block/null_blk_main.c:1214:35: warning: 'sector' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/block/bfq-iosched.c: In function 'bfq_exit_icq_bfqq':
/kisskb/src/block/bfq-iosched.c:4110:11: warning: 'bfqd' 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/lib/mpi/mpicoder.c: In function 'mpi_read_raw_from_sgl':
/kisskb/src/lib/mpi/mpicoder.c:352:8: warning: 'buff' 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/drivers/dma-buf/reservation.c: In function 'reservation_object_add_shared_replace':
/kisskb/src/drivers/dma-buf/reservation.c:211:7: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/lib/raid6/recov_avx512.c:387:2: warning: #warning "your version of binutils lacks AVX512 support" [-Wcpp]
/kisskb/src/lib/rhashtable.c: In function 'rhashtable_rehash_one':
/kisskb/src/lib/rhashtable.c:264:2: warning: 'next' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/infiniband/ulp/ipoib/ipoib_main.c: In function 'ipoib_get_netdev':
/kisskb/src/drivers/infiniband/ulp/ipoib/ipoib_main.c:2158:30: warning: 'dev' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/udf/unicode.c: In function 'udf_name_conv_char':
/kisskb/src/fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/bridge/br_netlink.c: In function 'br_process_vlan_info.isra.25':
/kisskb/src/net/bridge/br_netlink.c:589:10: 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/net/core/gen_stats.c: In function '__gnet_stats_copy_basic':
/kisskb/src/net/core/gen_stats.c:161:19: warning: 'seq' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/mtd/ubi/eba.c: In function 'try_write_vid_and_data':
/kisskb/src/drivers/mtd/ubi/eba.c:1001:7: warning: 'opnum' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/pwm/pwm-atmel-hlcdc.c: In function 'atmel_hlcdc_pwm_apply':
/kisskb/src/drivers/pwm/pwm-atmel-hlcdc.c:78:56: warning: 'clk_period_ns' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/spi/spidev.c: In function 'spidev_ioctl':
/kisskb/src/drivers/spi/spidev.c:478:10: warning: 'n_ioc' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/core/dev.c: In function 'validate_xmit_skb_list':
/kisskb/src/net/core/dev.c:3343:15: warning: 'tail' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c: In function 'tun_get_user':
/kisskb/src/drivers/net/tun.c:1843:23: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c:1546:34: warning: 'linear' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c:1746:46: note: 'linear' was declared here
/kisskb/src/drivers/net/wireless/intel/iwlegacy/3945-mac.c: In function 'il3945_tx_skb':
/kisskb/src/drivers/net/wireless/intel/iwlegacy/3945-mac.c:615:33: warning: 'phys_addr' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/wireless/intel/iwlegacy/4965-mac.c: In function 'il4965_tx_skb':
/kisskb/src/drivers/net/wireless/intel/iwlegacy/4965-mac.c:1856:33: warning: 'phys_addr' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/sctp/output.c: In function 'sctp_packet_config':
/kisskb/src/include/net/sock.h:1926:19: warning: 'sk' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/sctp/output.c:94:15: note: 'sk' was declared here
/kisskb/src/net/mac80211/tdls.c: In function 'ieee80211_tdls_add_subband':
/kisskb/src/net/mac80211/tdls.c:106:43: warning: 'subband_start' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/mac80211/mlme.c: In function 'ieee80211_handle_pwr_constr.isra.31':
/kisskb/src/net/mac80211/mlme.c:1511:3: warning: 'pwr_level_cisco' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/mac80211/mesh_pathtbl.c: In function 'mesh_path_add':
/kisskb/src/net/mac80211/mesh_pathtbl.c:445:11: warning: 'mpath' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/mac80211/mesh_pathtbl.c:417:28: warning: 'new_mpath' may be used uninitialized in this function [-Wuninitialized]
/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(); }
                            ^~~~~~~~~~~~~~~~~~~~~~~~~~~
Completed OK
# rm -rf /kisskb/build/linus-rand_i386-randconfig_i386
# Build took: 0:02:40.802300