Buildresult: linus/corenet64_smp_defconfig/powerpc-gcc4.6 built on Aug 2 2018, 05:18
kisskb
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Status:
OK
Date/Time:
Aug 2 2018, 05:18
Duration:
0:01:49.352168
Builder:
ka3
Revision:
staging: ashmem: Fix SIGBUS crash when traversing mmaped ashmem pages (
44960f2a7b63e224b1091b3e1d6f60e0cdf4be0c)
Target:
linus/corenet64_smp_defconfig/powerpc-gcc4.6
Branch:
linus
Compiler:
powerpc-gcc4.6
(powerpc-linux-gcc (GCC) 4.6.3)
Config:
corenet64_smp_defconfig
(
download
)
Log:
Download original
Possible warnings (10)
kernel/cgroup/cgroup-v1.c:1256:20: warning: 'root' may be used uninitialized in this function [-Wuninitialized] kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] drivers/base/regmap/regmap.c:2497:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] drivers/base/regmap/regmap.c:1819:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] mm/hugetlb.c:1433:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized] net/core/rtnetlink.c:3102:1: warning: the frame size of 1232 bytes is larger than 1024 bytes [-Wframe-larger-than=] drivers/tty/serial/8250/8250_core.c:251:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized] WARNING: vmlinux.o (.PPC.EMB.apuinfo): unexpected non-allocatable section.
Full Log
# git rev-parse -q --verify 44960f2a7b63e224b1091b3e1d6f60e0cdf4be0c^{commit} 44960f2a7b63e224b1091b3e1d6f60e0cdf4be0c already have revision, skipping fetch # git checkout -q -f -B kisskb 44960f2a7b63e224b1091b3e1d6f60e0cdf4be0c # git clean -qxdf # < git log -1 # commit 44960f2a7b63e224b1091b3e1d6f60e0cdf4be0c # Author: John Stultz <john.stultz@linaro.org> # Date: Tue Jul 31 10:17:04 2018 -0700 # # staging: ashmem: Fix SIGBUS crash when traversing mmaped ashmem pages # # Amit Pundir and Youling in parallel reported crashes with recent # mainline kernels running Android: # # F DEBUG : *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** # F DEBUG : Build fingerprint: 'Android/db410c32_only/db410c32_only:Q/OC-MR1/102:userdebug/test-key # F DEBUG : Revision: '0' # F DEBUG : ABI: 'arm' # F DEBUG : pid: 2261, tid: 2261, name: zygote >>> zygote <<< # F DEBUG : signal 7 (SIGBUS), code 2 (BUS_ADRERR), fault addr 0xec00008 # ... <snip> ... # F DEBUG : backtrace: # F DEBUG : #00 pc 00001c04 /system/lib/libc.so (memset+48) # F DEBUG : #01 pc 0010c513 /system/lib/libart.so (create_mspace_with_base+82) # F DEBUG : #02 pc 0015c601 /system/lib/libart.so (art::gc::space::DlMallocSpace::CreateMspace(void*, unsigned int, unsigned int)+40) # F DEBUG : #03 pc 0015c3ed /system/lib/libart.so (art::gc::space::DlMallocSpace::CreateFromMemMap(art::MemMap*, std::__1::basic_string<char, std::__ 1::char_traits<char>, std::__1::allocator<char>> const&, unsigned int, unsigned int, unsigned int, unsigned int, bool)+36) # ... # # This was bisected back to commit bfd40eaff5ab ("mm: fix # vma_is_anonymous() false-positives"). # # create_mspace_with_base() in the trace above, utilizes ashmem, and with # ashmem, for shared mappings we use shmem_zero_setup(), which sets the # vma->vm_ops to &shmem_vm_ops. But for private ashmem mappings nothing # sets the vma->vm_ops. # # Looking at the problematic patch, it seems to add a requirement that one # call vma_set_anonymous() on a vma, otherwise the dummy_vm_ops will be # used. Using the dummy_vm_ops seem to triggger SIGBUS when traversing # unmapped pages. # # Thus, this patch adds a call to vma_set_anonymous() for ashmem private # mappings and seems to avoid the reported problem. # # Fixes: bfd40eaff5ab ("mm: fix vma_is_anonymous() false-positives") # Cc: Kirill Shutemov <kirill.shutemov@linux.intel.com> # Cc: Andrew Morton <akpm@linux-foundation.org> # Cc: Dmitry Vyukov <dvyukov@google.com> # Cc: Oleg Nesterov <oleg@redhat.com> # Cc: Andrea Arcangeli <aarcange@redhat.com> # Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> # Cc: Hugh Dickins <hughd@google.com> # Cc: Joel Fernandes <joelaf@google.com> # Cc: Colin Cross <ccross@google.com> # Cc: Matthew Wilcox <willy@infradead.org> # Reported-by: Amit Pundir <amit.pundir@linaro.org> # Reported-by: Youling 257 <youling257@gmail.com> # Signed-off-by: John Stultz <john.stultz@linaro.org> # Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version # < git log --format=%s --max-count=1 44960f2a7b63e224b1091b3e1d6f60e0cdf4be0c # < make -s -j 80 ARCH=powerpc O=/kisskb/build/linus_corenet64_smp_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- corenet64_smp_defconfig # make -s -j 80 ARCH=powerpc O=/kisskb/build/linus_corenet64_smp_defconfig_powerpc 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:1256:20: 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:183:16: 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:2497:6: 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:1819:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/mm/hugetlb.c: In function 'alloc_pool_huge_page': /kisskb/src/mm/hugetlb.c:1433:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/core/rtnetlink.c: In function 'rtnl_newlink': /kisskb/src/net/core/rtnetlink.c:3102:1: warning: the frame size of 1232 bytes is larger than 1024 bytes [-Wframe-larger-than=] /kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq': /kisskb/src/drivers/tty/serial/8250/8250_core.c:251:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/tty/serial/8250/8250_core.c:231:19: note: 'i' 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] 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. INFO: Uncompressed kernel (size 0xf24840) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x1000000) Image Name: Linux-4.18.0-rc7-g44960f2 Created: Thu Aug 2 05:20:21 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6383045 Bytes = 6233.44 kB = 6.09 MB Load Address: 00000000 Entry Point: 00000000 Completed OK # rm -rf /kisskb/build/linus_corenet64_smp_defconfig_powerpc # Build took: 0:01:49.352168
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