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Message-ID: <202411061205.AZijSWPc-lkp@intel.com>
Date: Wed, 6 Nov 2024 12:24:50 +0800
From: kernel test robot <lkp@...el.com>
To: Calvin Owens <calvin@...nvd.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
Rodolfo Giometti <giometti@...eenne.com>,
George Spelvin <linux@...izon.com>, linux-kernel@...r.kernel.org,
stable@...r.kernel.org
Subject: Re: [PATCH v3] pps: Fix a use-after-free
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@intel.com/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@intel.com/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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202411061205.AZijSWPc-lkp@intel.com/
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
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