# git rev-parse -q --verify 4aa9fc2a435abe95a1e8d7f8c7b3d6356514b37a^{commit}
4aa9fc2a435abe95a1e8d7f8c7b3d6356514b37a
already have revision, skipping fetch
# git checkout -q -f -B kisskb 4aa9fc2a435abe95a1e8d7f8c7b3d6356514b37a
# git clean -qxdf
# < git log -1
# commit 4aa9fc2a435abe95a1e8d7f8c7b3d6356514b37a
# Author: Michal Hocko <mhocko@suse.com>
# Date:   Fri Jan 25 19:08:58 2019 +0100
# 
#     Revert "mm, memory_hotplug: initialize struct pages for the full memory section"
#     
#     This reverts commit 2830bf6f05fb3e05bc4743274b806c821807a684.
#     
#     The underlying assumption that one sparse section belongs into a single
#     numa node doesn't hold really. Robert Shteynfeld has reported a boot
#     failure. The boot log was not captured but his memory layout is as
#     follows:
#     
#       Early memory node ranges
#         node   1: [mem 0x0000000000001000-0x0000000000090fff]
#         node   1: [mem 0x0000000000100000-0x00000000dbdf8fff]
#         node   1: [mem 0x0000000100000000-0x0000001423ffffff]
#         node   0: [mem 0x0000001424000000-0x0000002023ffffff]
#     
#     This means that node0 starts in the middle of a memory section which is
#     also in node1.  memmap_init_zone tries to initialize padding of a
#     section even when it is outside of the given pfn range because there are
#     code paths (e.g.  memory hotplug) which assume that the full worth of
#     memory section is always initialized.
#     
#     In this particular case, though, such a range is already intialized and
#     most likely already managed by the page allocator.  Scribbling over
#     those pages corrupts the internal state and likely blows up when any of
#     those pages gets used.
#     
#     Reported-by: Robert Shteynfeld <robert.shteynfeld@gmail.com>
#     Fixes: 2830bf6f05fb ("mm, memory_hotplug: initialize struct pages for the full memory section")
#     Cc: stable@kernel.org
#     Signed-off-by: Michal Hocko <mhocko@suse.com>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-ld --version
# < git log --format=%s --max-count=1 4aa9fc2a435abe95a1e8d7f8c7b3d6356514b37a
# < make -s -j 10 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  randconfig
KCONFIG_SEED=0x40D8BEDE
# Added to kconfig CONFIG_STANDALONE=y
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_MODULE_SIG=n
# Added to kconfig CONFIG_CPU_BIG_ENDIAN=y
# Added to kconfig CONFIG_PPC64=y
# Added to kconfig CONFIG_PPC_DISABLE_WERROR=y
# Added to kconfig CONFIG_SECTION_MISMATCH_WARN_ONLY=y
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# Added to kconfig CONFIG_CC_STACKPROTECTOR_STRONG=n
# Added to kconfig CONFIG_GCC_PLUGINS=n
# Added to kconfig CONFIG_LD_HEAD_STUB_CATCH=y
# Added to kconfig 
# yes \n | make -s -j 10 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  oldconfig
yes: standard output: Broken pipe
# make -s -j 10 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
/kisskb/src/kernel/cgroup/cgroup-v1.c: In function 'cgroup1_mount':
/kisskb/src/kernel/cgroup/cgroup-v1.c:1263:20: warning: 'root' 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:186:16: 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:2594:6: 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:1855:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/f2fs/file.c: In function 'f2fs_precache_extents':
/kisskb/src/fs/f2fs/file.c:2937:6: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/f2fs/node.c: In function '__set_nat_cache_dirty':
/kisskb/src/include/linux/list.h:63:13: warning: 'head' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/f2fs/node.c:237:24: note: 'head' was declared here
/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:339:21: note: 'pdeo' was declared here
/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/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/drivers/soc/qcom/rpmh.c: In function 'rpmh_write_batch':
/kisskb/src/drivers/soc/qcom/rpmh.c:355:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq':
/kisskb/src/drivers/tty/serial/8250/8250_core.c:247:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c:227:19: note: 'i' was declared here
WARNING: vmlinux.o (.PPC.EMB.apuinfo): unexpected non-allocatable section.
Did you forget to use "ax"/"aw" in a .S file?
Note that for example <linux/init.h> contains
section definitions for use in .S files.

WARNING: 140 bad relocations
c000000000016692 R_PPC64_ADDR16_HIGHEST  .head.text+0x00000000000166ac
c000000000016696 R_PPC64_ADDR16_HIGHER  .head.text+0x00000000000166ac
c00000000001669e R_PPC64_ADDR16_HI  .head.text+0x00000000000166ac
c0000000000166a2 R_PPC64_ADDR16_LO  .head.text+0x00000000000166ac
c00000000096fbc4 R_PPC64_UADDR64   .rodata+0x0000000000299088
c00000000096fbdf R_PPC64_UADDR64   .rodata+0x0000000000285ba8
c00000000096fbfa R_PPC64_UADDR64   .rodata+0x0000000000285bd8
c00000000096fc15 R_PPC64_UADDR64   .rodata+0x0000000000285be8
c00000000096fc4b R_PPC64_UADDR64   .rodata+0x0000000000285c08
c00000000096fc66 R_PPC64_UADDR64   .rodata+0x0000000000285c18
c00000000096fc81 R_PPC64_UADDR64   .rodata+0x0000000000285c28
c00000000096fc9c R_PPC64_UADDR64   .rodata+0x0000000000285c38
c00000000096fcb7 R_PPC64_UADDR64   .rodata+0x0000000000285c48
c00000000096fcd2 R_PPC64_UADDR64   .rodata+0x0000000000285c58
c00000000096fced R_PPC64_UADDR64   .rodata+0x0000000000285c60
c00000000096fd23 R_PPC64_UADDR64   .rodata+0x0000000000285c78
c00000000096fd3e R_PPC64_UADDR64   .rodata+0x0000000000285c88
c00000000096fd59 R_PPC64_UADDR64   .rodata+0x0000000000285c98
c00000000096fd74 R_PPC64_UADDR64   .rodata+0x0000000000285ca8
c00000000096fd8f R_PPC64_UADDR64   .rodata+0x0000000000285cb8
c00000000096fdaa R_PPC64_UADDR64   .rodata+0x0000000000285cc8
c00000000096fdc5 R_PPC64_UADDR64   .rodata+0x0000000000285cd8
c00000000096fdfb R_PPC64_UADDR64   .rodata+0x0000000000285cf8
c00000000096fe16 R_PPC64_UADDR64   .rodata+0x0000000000285d08
c00000000096fe31 R_PPC64_UADDR64   .rodata+0x0000000000285d18
c00000000096fe4c R_PPC64_UADDR64   .rodata+0x0000000000285d28
c00000000096fe67 R_PPC64_UADDR64   .rodata+0x0000000000285d38
c00000000096fe82 R_PPC64_UADDR64   .rodata+0x0000000000285d48
c00000000096fe9d R_PPC64_UADDR64   .rodata+0x0000000000285d58
c00000000096fed3 R_PPC64_UADDR64   .rodata+0x0000000000285d78
c00000000096feee R_PPC64_UADDR64   .rodata+0x0000000000285d88
c00000000096ff09 R_PPC64_UADDR64   .rodata+0x0000000000285d98
c00000000096ff24 R_PPC64_UADDR64   .rodata+0x0000000000285da0
c00000000096ff3f R_PPC64_UADDR64   .rodata+0x0000000000285db0
c00000000096ff5a R_PPC64_UADDR64   .rodata+0x0000000000285dc0
c00000000096ff75 R_PPC64_UADDR64   .rodata+0x0000000000285dd0
c00000000096ffab R_PPC64_UADDR64   .rodata+0x0000000000285df0
c00000000096ffc6 R_PPC64_UADDR64   .rodata+0x0000000000285e00
c00000000096ffe1 R_PPC64_UADDR64   .rodata+0x0000000000285e10
c00000000096fffc R_PPC64_UADDR64   .rodata+0x0000000000285e20
c000000000970017 R_PPC64_UADDR64   .rodata+0x0000000000285e30
c000000000970032 R_PPC64_UADDR64   .rodata+0x0000000000285e40
c00000000097004d R_PPC64_UADDR64   .rodata+0x0000000000285e50
c000000000970083 R_PPC64_UADDR64   .rodata+0x0000000000285e70
c00000000097009e R_PPC64_UADDR64   .rodata+0x0000000000285e80
c0000000009700b9 R_PPC64_UADDR64   .rodata+0x0000000000285e90
c0000000009700d4 R_PPC64_UADDR64   .rodata+0x0000000000285ea0
c0000000009700ef R_PPC64_UADDR64   .rodata+0x0000000000285eb0
c00000000097010a R_PPC64_UADDR64   .rodata+0x0000000000285ec0
c000000000970125 R_PPC64_UADDR64   .rodata+0x0000000000285ed0
c00000000097015b R_PPC64_UADDR64   .rodata+0x0000000000285ef0
c000000000970176 R_PPC64_UADDR64   .rodata+0x0000000000285f00
c000000000970191 R_PPC64_UADDR64   .rodata+0x0000000000285f10
c0000000009701ac R_PPC64_UADDR64   .rodata+0x0000000000285f20
c0000000009701c7 R_PPC64_UADDR64   .rodata+0x0000000000285f30
c0000000009701e2 R_PPC64_UADDR64   .rodata+0x0000000000285f40
c0000000009701fd R_PPC64_UADDR64   .rodata+0x0000000000285f50
c000000000970233 R_PPC64_UADDR64   .rodata+0x0000000000285f70
c00000000097024e R_PPC64_UADDR64   .rodata+0x0000000000285f80
c000000000970269 R_PPC64_UADDR64   .rodata+0x0000000000285f90
c000000000970284 R_PPC64_UADDR64   .rodata+0x0000000000285fa0
c00000000097029f R_PPC64_UADDR64   .rodata+0x0000000000285fb0
c0000000009702ba R_PPC64_UADDR64   .rodata+0x0000000000285fc0
c0000000009702d5 R_PPC64_UADDR64   .rodata+0x0000000000285fd0
c00000000097030b R_PPC64_UADDR64   .rodata+0x0000000000285ff0
c000000000970326 R_PPC64_UADDR64   .rodata+0x0000000000286000
c000000000970341 R_PPC64_UADDR64   .rodata+0x0000000000286010
c00000000097035c R_PPC64_UADDR64   .rodata+0x0000000000286020
c000000000970377 R_PPC64_UADDR64   .rodata+0x0000000000286030
c000000000970392 R_PPC64_UADDR64   .rodata+0x0000000000286040
c0000000009703ad R_PPC64_UADDR64   .rodata+0x0000000000286050
c0000000009703e3 R_PPC64_UADDR64   .rodata+0x0000000000286070
c0000000009703fe R_PPC64_UADDR64   .rodata+0x0000000000286088
c000000000970419 R_PPC64_UADDR64   .rodata+0x0000000000286098
c000000000970434 R_PPC64_UADDR64   .rodata+0x00000000002860a8
c00000000097044f R_PPC64_UADDR64   .rodata+0x00000000002860b8
c00000000097046a R_PPC64_UADDR64   .rodata+0x00000000002860c8
c000000000970485 R_PPC64_UADDR64   .rodata+0x00000000002860e0
c0000000009704bb R_PPC64_UADDR64   .rodata+0x00000000002860f8
c0000000009704d6 R_PPC64_UADDR64   .rodata+0x0000000000286108
c0000000009704f1 R_PPC64_UADDR64   .rodata+0x0000000000286118
c00000000097050c R_PPC64_UADDR64   .rodata+0x0000000000286128
c000000000970527 R_PPC64_UADDR64   .rodata+0x0000000000286138
c000000000970542 R_PPC64_UADDR64   .rodata+0x0000000000286148
c00000000097055d R_PPC64_UADDR64   .rodata+0x0000000000286158
c000000000970593 R_PPC64_UADDR64   .rodata+0x0000000000286170
c0000000009705ae R_PPC64_UADDR64   .rodata+0x0000000000286180
c0000000009705c9 R_PPC64_UADDR64   .rodata+0x0000000000286190
c0000000009705e4 R_PPC64_UADDR64   .rodata+0x00000000002861a0
c0000000009705ff R_PPC64_UADDR64   .rodata+0x00000000002861b0
c00000000097061a R_PPC64_UADDR64   .rodata+0x00000000002861c0
c000000000970635 R_PPC64_UADDR64   .rodata+0x00000000002861d0
c00000000097066b R_PPC64_UADDR64   .rodata+0x00000000002861f8
c000000000970686 R_PPC64_UADDR64   .rodata+0x0000000000286210
c0000000009706a1 R_PPC64_UADDR64   .rodata+0x0000000000286220
c0000000009706bc R_PPC64_UADDR64   .rodata+0x0000000000286230
c0000000009706d7 R_PPC64_UADDR64   .rodata+0x0000000000286240
c0000000009706f2 R_PPC64_UADDR64   .rodata+0x0000000000286250
c00000000097070d R_PPC64_UADDR64   .rodata+0x0000000000286260
c000000000970743 R_PPC64_UADDR64   .rodata+0x0000000000286280
c00000000097075e R_PPC64_UADDR64   .rodata+0x0000000000286290
c000000000970779 R_PPC64_UADDR64   .rodata+0x00000000002862a0
c000000000970794 R_PPC64_UADDR64   .rodata+0x00000000002862b0
c0000000009707af R_PPC64_UADDR64   .rodata+0x00000000002862c0
c0000000009707ca R_PPC64_UADDR64   .rodata+0x00000000002862d0
c0000000009707e5 R_PPC64_UADDR64   .rodata+0x00000000002862e0
c00000000097081b R_PPC64_UADDR64   .rodata+0x0000000000286300
c000000000970836 R_PPC64_UADDR64   .rodata+0x0000000000286310
c000000000970851 R_PPC64_UADDR64   .rodata+0x0000000000286320
c00000000097086c R_PPC64_UADDR64   .rodata+0x0000000000286330
c000000000970887 R_PPC64_UADDR64   .rodata+0x0000000000286340
c0000000009708a2 R_PPC64_UADDR64   .rodata+0x0000000000286350
c0000000009708bd R_PPC64_UADDR64   .rodata+0x0000000000286360
c0000000009708f3 R_PPC64_UADDR64   .rodata+0x0000000000286380
c00000000097090e R_PPC64_UADDR64   .rodata+0x0000000000286390
c000000000970929 R_PPC64_UADDR64   .rodata+0x00000000002863a0
c000000000970944 R_PPC64_UADDR64   .rodata+0x00000000002863b0
c00000000097095f R_PPC64_UADDR64   .rodata+0x00000000002863c0
c00000000097097a R_PPC64_UADDR64   .rodata+0x00000000002863d0
c000000000970995 R_PPC64_UADDR64   .rodata+0x00000000002863e0
c0000000009709cb R_PPC64_UADDR64   .rodata+0x0000000000286400
c0000000009709e6 R_PPC64_UADDR64   .rodata+0x0000000000286410
c000000000970a01 R_PPC64_UADDR64   .rodata+0x0000000000286420
c000000000970a1c R_PPC64_UADDR64   .rodata+0x0000000000286430
c000000000970a37 R_PPC64_UADDR64   .rodata+0x0000000000286440
c000000000970a52 R_PPC64_UADDR64   .rodata+0x0000000000286450
c000000000970a6d R_PPC64_UADDR64   .rodata+0x0000000000286460
c000000000970aa3 R_PPC64_UADDR64   .rodata+0x0000000000286480
c000000000970abe R_PPC64_UADDR64   .rodata+0x0000000000286490
c000000000970ad9 R_PPC64_UADDR64   .rodata+0x00000000002864a0
c000000000970af4 R_PPC64_UADDR64   .rodata+0x00000000002864b0
c000000000970b0f R_PPC64_UADDR64   .rodata+0x00000000002864c0
c000000000970b2a R_PPC64_UADDR64   .rodata+0x00000000002864d0
c000000000970b45 R_PPC64_UADDR64   .rodata+0x00000000002864e8
c000000000970b7b R_PPC64_UADDR64   .rodata+0x0000000000286508
c000000000970b96 R_PPC64_UADDR64   .rodata+0x0000000000286518
c000000000970bb1 R_PPC64_UADDR64   .rodata+0x0000000000286528
c000000000970bcc R_PPC64_UADDR64   .rodata+0x0000000000286538
c000000000970be7 R_PPC64_UADDR64   .rodata+0x0000000000286548
c000000000970c02 R_PPC64_UADDR64   .rodata+0x0000000000286558
WARNING: You need at least binutils >= 2.19 to build a CONFIG_RELOCATABLE kernel
INFO: Uncompressed kernel (size 0xef7240) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0xf00000)
Image Name:   Linux-5.0.0-rc4+
Created:      Tue Jan 29 08:41:54 2019
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    4921316 Bytes = 4805.97 KiB = 4.69 MiB
Load Address: 00000000
Entry Point:  00000000
Completed OK
# rm -rf /kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc4.6
# Build took: 0:03:14.645306