Hi Greg,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu.git armnommu
head: ed5fa52b95e3fa1433687bfe643b2846858a8d92
commit: ed5fa52b95e3fa1433687bfe643b2846858a8d92 [3/3] ARM: versatile: support configuring versatile machine for no-MMU
config: arm-randconfig-r111-20240731 (https://download.01.org/0day-ci/archive/20240731/202407311725.iQ5sIAIR-lkp@xxxxxxxxx/config)
compiler: arm-linux-gnueabi-gcc (GCC) 14.1.0
reproduce: (https://download.01.org/0day-ci/archive/20240731/202407311725.iQ5sIAIR-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/202407311725.iQ5sIAIR-lkp@xxxxxxxxx/
sparse warnings: (new ones prefixed by >>)
arch/arm/mm/alignment.c:775:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got unsigned int [usertype] *ip @@
arch/arm/mm/alignment.c:775:25: sparse: expected void const volatile [noderef] __user *ptr
arch/arm/mm/alignment.c:775:25: sparse: got unsigned int [usertype] *ip
arch/arm/mm/alignment.c:790:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got unsigned short [usertype] *ip @@
arch/arm/mm/alignment.c:790:25: sparse: expected void const volatile [noderef] __user *ptr
arch/arm/mm/alignment.c:790:25: sparse: got unsigned short [usertype] *ip
vim +775 arch/arm/mm/alignment.c
c2860d43f5dfab George G. Davis 2009-06-04 768
1bb9fb0a147f9d Russell King 2019-09-06 769 static int alignment_get_arm(struct pt_regs *regs, u32 *ip, u32 *inst)
67e15fa5b487ad Russell King 2019-08-31 770 {
67e15fa5b487ad Russell King 2019-08-31 771 u32 instr = 0;
67e15fa5b487ad Russell King 2019-08-31 772 int fault;
67e15fa5b487ad Russell King 2019-08-31 773
67e15fa5b487ad Russell King 2019-08-31 774 if (user_mode(regs))
67e15fa5b487ad Russell King 2019-08-31 @775 fault = get_user(instr, ip);
67e15fa5b487ad Russell King 2019-08-31 776 else
25f12ae45fc193 Christoph Hellwig 2020-06-17 777 fault = get_kernel_nofault(instr, ip);
67e15fa5b487ad Russell King 2019-08-31 778
67e15fa5b487ad Russell King 2019-08-31 779 *inst = __mem_to_opcode_arm(instr);
67e15fa5b487ad Russell King 2019-08-31 780
67e15fa5b487ad Russell King 2019-08-31 781 return fault;
67e15fa5b487ad Russell King 2019-08-31 782 }
67e15fa5b487ad Russell King 2019-08-31 783
67e15fa5b487ad Russell King 2019-08-31 784 static int alignment_get_thumb(struct pt_regs *regs, u16 *ip, u16 *inst)
67e15fa5b487ad Russell King 2019-08-31 785 {
67e15fa5b487ad Russell King 2019-08-31 786 u16 instr = 0;
67e15fa5b487ad Russell King 2019-08-31 787 int fault;
67e15fa5b487ad Russell King 2019-08-31 788
67e15fa5b487ad Russell King 2019-08-31 789 if (user_mode(regs))
67e15fa5b487ad Russell King 2019-08-31 @790 fault = get_user(instr, ip);
67e15fa5b487ad Russell King 2019-08-31 791 else
25f12ae45fc193 Christoph Hellwig 2020-06-17 792 fault = get_kernel_nofault(instr, ip);
67e15fa5b487ad Russell King 2019-08-31 793
67e15fa5b487ad Russell King 2019-08-31 794 *inst = __mem_to_opcode_thumb16(instr);
67e15fa5b487ad Russell King 2019-08-31 795
67e15fa5b487ad Russell King 2019-08-31 796 return fault;
67e15fa5b487ad Russell King 2019-08-31 797 }
67e15fa5b487ad Russell King 2019-08-31 798
:::::: The code at line 775 was first introduced by commit
:::::: 67e15fa5b487adb9b78a92789eeff2d6ec8f5cee ARM: mm: fix alignment handler faults under memory pressure
:::::: TO: Russell King <rmk+kernel@xxxxxxxxxxxxxxx>
:::::: CC: Russell King <rmk+kernel@xxxxxxxxxxxxxxx>
--
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https://github.com/intel/lkp-tests/wiki
