Buildresult: linus/alpha-defconfig/alpha-gcc4.6 built on Jan 20 2019, 16:39
kisskb
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Status:
OK
Date/Time:
Jan 20 2019, 16:39
Duration:
0:00:29.015176
Builder:
ka4
Revision:
x86: uaccess: Inhibit speculation past access_ok() in user_access_begin() (
6e693b3ffecb0b478c7050b44a4842854154f715)
Target:
linus/alpha-defconfig/alpha-gcc4.6
Branch:
linus
Compiler:
alpha-gcc4.6
(alpha-linux-gcc (GCC) 4.6.3 / GNU ld (GNU Binutils) 2.22)
Config:
defconfig
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Log:
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Possible warnings (6)
<stdin>:1333:2: warning: #warning syscall io_pgetevents not implemented [-Wcpp] <stdin>:1336:2: warning: #warning syscall rseq not implemented [-Wcpp] include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] kernel/printk/printk.c:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] include/linux/skbuff.h:1338:6: warning: 'extra_uref' may be used uninitialized in this function [-Wuninitialized] WARNING: "saved_config" [vmlinux] is COMMON symbol
Full Log
# git rev-parse -q --verify 6e693b3ffecb0b478c7050b44a4842854154f715^{commit} 6e693b3ffecb0b478c7050b44a4842854154f715 already have revision, skipping fetch # git checkout -q -f -B kisskb 6e693b3ffecb0b478c7050b44a4842854154f715 # git clean -qxdf # < git log -1 # commit 6e693b3ffecb0b478c7050b44a4842854154f715 # Author: Will Deacon <will.deacon@arm.com> # Date: Sat Jan 19 21:56:05 2019 +0000 # # x86: uaccess: Inhibit speculation past access_ok() in user_access_begin() # # Commit 594cc251fdd0 ("make 'user_access_begin()' do 'access_ok()'") # makes the access_ok() check part of the user_access_begin() preceding a # series of 'unsafe' accesses. This has the desirable effect of ensuring # that all 'unsafe' accesses have been range-checked, without having to # pick through all of the callsites to verify whether the appropriate # checking has been made. # # However, the consolidated range check does not inhibit speculation, so # it is still up to the caller to ensure that they are not susceptible to # any speculative side-channel attacks for user addresses that ultimately # fail the access_ok() check. # # This is an oversight, so use __uaccess_begin_nospec() to ensure that # speculation is inhibited until the access_ok() check has passed. # # Reported-by: Julien Thierry <julien.thierry@arm.com> # Signed-off-by: Will Deacon <will.deacon@arm.com> # Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> # < /opt/cross/kisskb/gcc-4.6.3-nolibc/alpha-linux/bin/alpha-linux-gcc --version # < /opt/cross/kisskb/gcc-4.6.3-nolibc/alpha-linux/bin/alpha-linux-ld --version # < git log --format=%s --max-count=1 6e693b3ffecb0b478c7050b44a4842854154f715 # < make -s -j 120 ARCH=alpha O=/kisskb/build/linus_alpha-defconfig_alpha CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/alpha-linux/bin/alpha-linux- defconfig # make -s -j 120 ARCH=alpha O=/kisskb/build/linus_alpha-defconfig_alpha CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/alpha-linux/bin/alpha-linux- <stdin>:1333:2: warning: #warning syscall io_pgetevents not implemented [-Wcpp] <stdin>:1336:2: warning: #warning syscall rseq not implemented [-Wcpp] /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/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/net/ipv4/ip_output.c: In function '__ip_append_data': /kisskb/src/include/linux/skbuff.h:1338:6: warning: 'extra_uref' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/ipv4/ip_output.c:885:14: note: 'extra_uref' was declared here WARNING: "saved_config" [vmlinux] is COMMON symbol Kernel arch/alpha/boot/vmlinux.gz is ready Completed OK # rm -rf /kisskb/build/linus_alpha-defconfig_alpha # Build took: 0:00:29.015176
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