Hi Calvin, kernel test robot noticed the following build errors: [auto build test ERROR on linus/master] [also build test ERROR on v6.12-rc6 next-20241105] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Calvin-Owens/pps-Fix-a-use-after-free/20241105-155819 base: linus/master patch link: https://lore.kernel.org/r/abc43b18f21379c21a4d2c63372a04b2746be665.1730792731.git.calvin%40wbinvd.org patch subject: [PATCH v3] pps: Fix a use-after-free config: um-allmodconfig (https://download.01.org/0day-ci/archive/20241106/202411061205.AZijSWPc-lkp@xxxxxxxxx/config) compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 639a7ac648f1e50ccd2556e17d401c04f9cce625) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241106/202411061205.AZijSWPc-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202411061205.AZijSWPc-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from drivers/ptp/ptp_ocp.c:10: In file included from include/linux/pci.h:38: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:14: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 548 | val = __raw_readb(PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' 37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) | ^ In file included from drivers/ptp/ptp_ocp.c:10: In file included from include/linux/pci.h:38: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:14: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu' 35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) | ^ In file included from drivers/ptp/ptp_ocp.c:10: In file included from include/linux/pci.h:38: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:14: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 585 | __raw_writeb(value, PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:693:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 693 | readsb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:701:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 701 | readsw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:709:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 709 | readsl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:718:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 718 | writesb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:727:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 727 | writesw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:736:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 736 | writesl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ In file included from drivers/ptp/ptp_ocp.c:10: In file included from include/linux/pci.h:1650: In file included from include/linux/dmapool.h:14: In file included from include/linux/scatterlist.h:8: In file included from include/linux/mm.h:2213: include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ >> drivers/ptp/ptp_ocp.c:4423:23: error: passing 'struct device' to parameter of incompatible type 'struct device *'; take the address with & 4423 | ptp_ocp_symlink(bp, pps->dev, "pps"); | ^~~~~~~~ | & drivers/ptp/ptp_ocp.c:4387:52: note: passing argument to parameter 'child' here 4387 | ptp_ocp_symlink(struct ptp_ocp *bp, struct device *child, const char *link) | ^ 13 warnings and 1 error generated. vim +4423 drivers/ptp/ptp_ocp.c 773bda96492153 Jonathan Lemon 2021-08-03 4411 773bda96492153 Jonathan Lemon 2021-08-03 4412 static int 773bda96492153 Jonathan Lemon 2021-08-03 4413 ptp_ocp_complete(struct ptp_ocp *bp) 773bda96492153 Jonathan Lemon 2021-08-03 4414 { 773bda96492153 Jonathan Lemon 2021-08-03 4415 struct pps_device *pps; 773bda96492153 Jonathan Lemon 2021-08-03 4416 char buf[32]; d7875b4b078f7e Vadim Fedorenko 2024-08-29 4417 773bda96492153 Jonathan Lemon 2021-08-03 4418 sprintf(buf, "ptp%d", ptp_clock_index(bp->ptp)); 773bda96492153 Jonathan Lemon 2021-08-03 4419 ptp_ocp_link_child(bp, buf, "ptp"); 773bda96492153 Jonathan Lemon 2021-08-03 4420 773bda96492153 Jonathan Lemon 2021-08-03 4421 pps = pps_lookup_dev(bp->ptp); 773bda96492153 Jonathan Lemon 2021-08-03 4422 if (pps) 773bda96492153 Jonathan Lemon 2021-08-03 @4423 ptp_ocp_symlink(bp, pps->dev, "pps"); 773bda96492153 Jonathan Lemon 2021-08-03 4424 f67bf662d2cffa Jonathan Lemon 2021-09-14 4425 ptp_ocp_debugfs_add_device(bp); f67bf662d2cffa Jonathan Lemon 2021-09-14 4426 773bda96492153 Jonathan Lemon 2021-08-03 4427 return 0; 773bda96492153 Jonathan Lemon 2021-08-03 4428 } 773bda96492153 Jonathan Lemon 2021-08-03 4429 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
