Buildresult: linus/ppc40x_defconfig/powerpc-gcc4.6 built on Oct 3 2019, 10:59

kisskb

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Status:	OK
Date/Time:	Oct 3 2019, 10:59
Duration:	0:01:32.113954
Builder:	ka1
Revision:	timer-of: don't use conditional expression with mixed 'void' types (`0f1a7b3fac0583083ca19d4de47403511ced3521)`
Target:	linus/ppc40x_defconfig/powerpc-gcc4.6
Branch:	linus
Compiler:	powerpc-gcc4.6 (powerpc-linux-gcc (GCC) 4.6.3 / GNU ld (GNU Binutils) 2.22)
Config:	ppc40x_defconfig (download)
Log:	Download original Possible warnings (3) kernel/printk/printk.c:204:16: 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:248:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] Full Log # git rev-parse -q --verify 0f1a7b3fac0583083ca19d4de47403511ced3521^{commit} 0f1a7b3fac0583083ca19d4de47403511ced3521 already have revision, skipping fetch # git checkout -q -f -B kisskb 0f1a7b3fac0583083ca19d4de47403511ced3521 # git clean -qxdf # < git log -1 # commit 0f1a7b3fac0583083ca19d4de47403511ced3521 # Author: Linus Torvalds <torvalds@linux-foundation.org> # Date: Wed Oct 2 16:16:07 2019 -0700 # # timer-of: don't use conditional expression with mixed 'void' types # # Randy Dunlap reports on the sparse list that sparse warns about this # expression: # # of_irq->percpu ? free_percpu_irq(of_irq->irq, clkevt) : # free_irq(of_irq->irq, clkevt); # # and honestly, sparse is correct to warn. The return type of # free_percpu_irq() is 'void', while free_irq() returns a 'const void *' # that is the devname argument passed in to the request_irq(). # # You can't mix a void type with a non-void types in a conditional # expression according to the C standard. It so happens that gcc seems to # accept it - and the resulting type of the expression is void - but # there's really no reason for the kernel to have this kind of # non-standard expression with no real upside. # # The natural way to write that expression is with an if-statement: # # if (of_irq->percpu) # free_percpu_irq(of_irq->irq, clkevt); # else # free_irq(of_irq->irq, clkevt); # # which is more legible anyway. # # I'm not sure why that timer-of code seems to have this odd pattern. It # does the same at allocation time, but at least there the types match, # and it makes sense as an expression. # # Reported-by: Randy Dunlap <rdunlap@infradead.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 # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-ld --version # < git log --format=%s --max-count=1 0f1a7b3fac0583083ca19d4de47403511ced3521 # < make -s -j 8 ARCH=powerpc O=/kisskb/build/linus_ppc40x_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- ppc40x_defconfig # make -s -j 8 ARCH=powerpc O=/kisskb/build/linus_ppc40x_defconfig_powerpc-gcc4.6 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:204:16: 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:338:21: 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:248:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/tty/serial/8250/8250_core.c:228:19: note: 'i' was declared here INFO: Uncompressed kernel (size 0x53b744) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x53b744) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x53b744) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x52b0d0) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) Image Name: Linux-5.4.0-rc1-g0f1a7b3fac05 Created: Thu Oct 3 11:01:08 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2659675 Bytes = 2597.34 KiB = 2.54 MiB Load Address: 00600000 Entry Point: 00601758 Image Name: Linux-5.4.0-rc1-g0f1a7b3fac05 Created: Thu Oct 3 11:01:08 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2625117 Bytes = 2563.59 KiB = 2.50 MiB Load Address: 00000000 Entry Point: 00000000 INFO: Uncompressed kernel (size 0x53b744) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) Image Name: Linux-5.4.0-rc1-g0f1a7b3fac05 Created: Thu Oct 3 11:01:09 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2660075 Bytes = 2597.73 KiB = 2.54 MiB Load Address: 00600000 Entry Point: 006019cc Completed OK # rm -rf /kisskb/build/linus_ppc40x_defconfig_powerpc-gcc4.6 # Build took: 0:01:32.113954

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