Buildresult: npiggin/holly_defconfig/powerpc-gcc4.6 built on Aug 28 2018, 18:53

kisskb

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Status:	OK
Date/Time:	Aug 28 2018, 18:53
Duration:	0:01:02.345329
Builder:	ka2
Revision:	powerpc/64s/hash: convert SLB miss handlers to C (`1ccd25030612c37a86f574e71c4f5b0ac246c183)`
Target:	npiggin/holly_defconfig/powerpc-gcc4.6
Branch:	npiggin
Compiler:	powerpc-gcc4.6 (powerpc-linux-gcc (GCC) 4.6.3)
Config:	holly_defconfig (download)
Log:	Download original Possible warnings (3) kernel/printk/printk.c:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] drivers/tty/serial/8250/8250_core.c:251:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] Full Log # git rev-parse -q --verify 1ccd25030612c37a86f574e71c4f5b0ac246c183^{commit} 1ccd25030612c37a86f574e71c4f5b0ac246c183 already have revision, skipping fetch # git checkout -q -f -B kisskb 1ccd25030612c37a86f574e71c4f5b0ac246c183 # git clean -qxdf # < git log -1 # commit 1ccd25030612c37a86f574e71c4f5b0ac246c183 # Author: Nicholas Piggin <npiggin@gmail.com> # Date: Wed Aug 15 00:10:22 2018 +1000 # # powerpc/64s/hash: convert SLB miss handlers to C # # This patch moves SLB miss handlers completely to C, using the standard # exception handler macros to set up the stack and branch to C. # # This can be done because the segment containing the kernel stack is # always bolted, so accessing it with relocation on will not cause an # SLB exception. # # Arbitrary kernel memory may not be accessed when handling kernel space # SLB misses, so care should be taken there. However user SLB misses can # access any kernel memory, which can be used to move some fields out of # the paca (in later patches). # # User SLB misses could quite easily reconcile IRQs and set up a first # class kernel environment and exit via ret_from_except, however that # doesn't seem to be necessary at the moment, so we only do that if a # bad fault is encountered. # # [ Credit to Aneesh for bug fixes, error checks, and improvements to bad # address handling, etc ] # # Signed-off-by: Nicholas Piggin <npiggin@gmail.com> # # Since RFC: # - Added MSR[RI] handling # - Fixed up a register loss bug exposed by irq tracing (Aneesh) # - Reject misses outside the defined kernel regions (Aneesh) # - Added several more sanity checks and error handling (Aneesh), we may # look at consolidating these tests and tightenig up the code but for # a first pass we decided it's better to check carefully. # # Since v1: # - Fixed SLB cache corruption (Aneesh) # - Fixed untidy SLBE allocation "leak" in get_vsid error case # - Now survives some stress testing on real hardware # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version # < git log --format=%s --max-count=1 1ccd25030612c37a86f574e71c4f5b0ac246c183 # < make -s -j 8 ARCH=powerpc O=/kisskb/build/npiggin_holly_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- holly_defconfig # make -s -j 8 ARCH=powerpc O=/kisskb/build/npiggin_holly_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- /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/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/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 INFO: Uncompressed kernel (size 0x52ee7c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) Completed OK # rm -rf /kisskb/build/npiggin_holly_defconfig_powerpc # Build took: 0:01:02.345329

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