Hi Arnd, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git pending-fixes head: be32e0f17dc184e41da2e83e5bf700f3f1c7e93f commit: 7f94b69ece515ac82defa60ef7cba2cf26180216 [192/251] ARM: ixp4xx: fix compile-testing soc drivers config: h8300-randconfig-s031-20210803 (attached as .config) compiler: h8300-linux-gcc (GCC) 10.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=7f94b69ece515ac82defa60ef7cba2cf26180216 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next pending-fixes git checkout 7f94b69ece515ac82defa60ef7cba2cf26180216 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=h8300 SHELL=/bin/bash drivers/soc/ixp4xx/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) drivers/soc/ixp4xx/ixp4xx-qmgr.c: note: in included file (through include/linux/io.h, include/linux/irq.h, include/asm-generic/hardirq.h, ...): arch/h8300/include/asm/io.h:44:11: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:26:18: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:26:18: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:26:18: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:26:18: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:26:18: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:26:18: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:44:11: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:44:11: sparse: sparse: cast removes address space '__iomem' of expression >> drivers/soc/ixp4xx/ixp4xx-qmgr.c:149:37: sparse: sparse: dereference of noderef expression drivers/soc/ixp4xx/ixp4xx-qmgr.c:153:40: sparse: sparse: dereference of noderef expression drivers/soc/ixp4xx/ixp4xx-qmgr.c:154:40: sparse: sparse: dereference of noderef expression arch/h8300/include/asm/io.h:44:11: sparse: sparse: cast removes address space '__iomem' of expression drivers/soc/ixp4xx/ixp4xx-qmgr.c:174:38: sparse: sparse: dereference of noderef expression drivers/soc/ixp4xx/ixp4xx-qmgr.c:174:44: sparse: sparse: dereference of noderef expression arch/h8300/include/asm/io.h:26:18: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:44:11: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:26:18: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:44:11: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:26:18: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:44:11: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:44:11: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:26:18: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:44:11: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:26:18: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:44:11: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:44:11: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:44:11: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:44:11: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:44:11: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:44:11: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:44:11: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:44:11: sparse: sparse: cast removes address space '__iomem' of expression arch/h8300/include/asm/io.h:44:11: sparse: sparse: cast removes address space '__iomem' of expression vim +149 drivers/soc/ixp4xx/ixp4xx-qmgr.c 82a96f5790ac93 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Halasa 2008-01-01 139 82a96f5790ac93 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Halasa 2008-01-01 140 d4c9e9fc975155 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-05-23 141 static irqreturn_t qmgr_irq1_a0(int irq, void *pdev) d4c9e9fc975155 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-05-23 142 { d4c9e9fc975155 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-05-23 143 int i, ret = 0; 0771c6939484d2 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-04-28 144 u32 en_bitmap, src, stat; d4c9e9fc975155 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-05-23 145 d4c9e9fc975155 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-05-23 146 /* ACK - it may clear any bits so don't rely on it */ d4c9e9fc975155 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-05-23 147 __raw_writel(0xFFFFFFFF, &qmgr_regs->irqstat[0]); d4c9e9fc975155 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-05-23 148 0771c6939484d2 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-04-28 @149 en_bitmap = qmgr_regs->irqen[0]; 0771c6939484d2 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-04-28 150 while (en_bitmap) { 0771c6939484d2 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-04-28 151 i = __fls(en_bitmap); /* number of the last "low" queue */ 0771c6939484d2 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-04-28 152 en_bitmap &= ~BIT(i); d4c9e9fc975155 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-05-23 153 src = qmgr_regs->irqsrc[i >> 3]; d4c9e9fc975155 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-05-23 154 stat = qmgr_regs->stat1[i >> 3]; d4c9e9fc975155 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-05-23 155 if (src & 4) /* the IRQ condition is inverted */ d4c9e9fc975155 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-05-23 156 stat = ~stat; d4c9e9fc975155 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-05-23 157 if (stat & BIT(src & 3)) { d4c9e9fc975155 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-05-23 158 irq_handlers[i](irq_pdevs[i]); d4c9e9fc975155 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-05-23 159 ret = IRQ_HANDLED; d4c9e9fc975155 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-05-23 160 } d4c9e9fc975155 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-05-23 161 } d4c9e9fc975155 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-05-23 162 return ret; d4c9e9fc975155 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-05-23 163 } d4c9e9fc975155 arch/arm/mach-ixp4xx/ixp4xx_qmgr.c Krzysztof Hałasa 2009-05-23 164 :::::: The code at line 149 was first introduced by commit :::::: 0771c6939484d2ebe0ec28257c2570aecd9911e0 IXP42x: Use __fls() in QMgr interrupt handlers. :::::: TO: Krzysztof Hałasa <khc@xxxxxxxxx> :::::: CC: Krzysztof Hałasa <khc@xxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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