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Thu, 13 Feb 2025 07:45:11 +0000 Date: Thu, 13 Feb 2025 15:45:00 +0800 From: kernel test robot To: Dave Penkler CC: , , , , , Dave Penkler , Subject: Re: [PATCH] staging: gpib: Remove dependencies on !X86_PAE Message-ID: <202502131453.cb6d2e4a-lkp@intel.com> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20250204174254.16576-1-dpenkler@gmail.com> X-ClientProxiedBy: SI2PR02CA0052.apcprd02.prod.outlook.com (2603:1096:4:196::18) To LV3PR11MB8603.namprd11.prod.outlook.com (2603:10b6:408:1b6::9) Precedence: bulk X-Mailing-List: linux-staging@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV3PR11MB8603:EE_|PH7PR11MB7449:EE_ X-MS-Office365-Filtering-Correlation-Id: 81b2f1bb-ccea-49b7-a172-08dd4c02585d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|1800799024|376014|7053199007; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?eRYXtLuf/UlosXG4d8AdrFSR9+Lpq8IqSU91jViGRAKKLki4GQnX1ZOe1cb5?= =?us-ascii?Q?9uPrlW97Uy6nrCYoOipMJll4lpWZFUz7ii6kqTLISD/xXB8rDMQquQI2omRt?= =?us-ascii?Q?+luNfnfOE673hCsMLacr0pk5i21L1DHdlTaNmC69h/UoqmonG9sKxRYdgusO?= =?us-ascii?Q?RvbsZTQAmmocWWbZ9tx321WYfSnsCW6JC7YT5lKgvVHwbGvSJdrPRoRi5uEh?= =?us-ascii?Q?+ci0R0qma8R3b8PcTHrqd41b1RoGdLoTxrPi8tlIO1LMZrvCrGREPASLmaQS?= =?us-ascii?Q?J7/c7iefPxK9JTdURvjAU9ZuaabTnTUtwrWn6bwaJJS1KCpY63zzXlilVZ/E?= =?us-ascii?Q?GLxzF1bJ2UnWjEZzqzctpFg48xmUuSv8HNW9DyoiJGjs023Z02rxhcpuh7bp?= =?us-ascii?Q?mVSS4Y/cdxUhQizknBGi2rJfkiIsM+p/jjiiC0tdWWunOMNBLadGkr1I1+Of?= =?us-ascii?Q?DWVKdTH3wIUyCXv5DPV3IWKpdQPnkFliHJIFJY7Y152B/ZYn6kbOK+qL4ZGk?= =?us-ascii?Q?iAGeJKq7rbdG6br2nQH7VeNAkRvG6gBP/4bYb4k3gseb2Gsywps00ptePztD?= =?us-ascii?Q?+Y0JdPlKmhwX2xhkAaBjDj2MXL+IfD8zsTmrOzsHZyPQdSjF1l34VItncbQp?= =?us-ascii?Q?mSL3X4N5/qj2d/exe6NoufDjVogV2nOKinHJgP1tN6sqNIaJQS1LMu3ryB6G?= =?us-ascii?Q?iyRMp1pHuTWONOryXcT4KszOJaU/E3pFXDYgPdnA/8pcj4Cg5gd1G0mozE93?= =?us-ascii?Q?JLCigLg+RpJAH4V4XvmABCMNvIy646zCMhsuLDe6LjHp2aj2ECXWL/91S5sl?= =?us-ascii?Q?c8JM2GHMXKeg5cx/5vwACfI2rzTtfq2DqL3zP3NKG75H+AFVKlYnKdjvtTzB?= =?us-ascii?Q?A9ZY31z7Rc05MF/+8/xloAc3ciS555yoNlAhe9aUy0a7W+qACV4YFW7k/5u1?= =?us-ascii?Q?1wiIMX4XYrQm8gq17TZHr188iBu2Pz63I6HBhJ1hp6uYjf0fMFaFx8YfhsKg?= =?us-ascii?Q?/Pit78C3m+mYSX2B+zIW1Z3jnVkd1JDkR/83TdVDdcUVkt/cNEC0gb8lizo/?= =?us-ascii?Q?sJa8pmC+VQuy5rgvcuhLRkcvzObD+m1ruYx1Us9vzxC5GOqSltOC0pjtgJVJ?= =?us-ascii?Q?FXgfk2kFFIRam7D6ZchNj3pTdQ+xbziw1ygtlPQl2O8ctGS2gYsuKhLEvOSu?= =?us-ascii?Q?fkmZ/eaaHNX0+J0q6bMlb34NUjmqz2t+xFRbnAqrqB5Vpb/ze72+4K+qimGW?= =?us-ascii?Q?WS6j639g4keX/tSjCcqRK4ue9tQJx9j7t/Div0o4wChgi/EY/ADIRLLu2dVG?= =?us-ascii?Q?CXgmj8zGKWWzI8eEL/IFSQtuPV8lGBBK3klK1CTI/ZadPg=3D=3D?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:LV3PR11MB8603.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(366016)(1800799024)(376014)(7053199007);DIR:OUT;SFP:1101; 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Hello, kernel test robot noticed "BUG:kernel_NULL_pointer_dereference,address" on: commit: 01b060a1e15939da2119458ea676709c33f0d26e ("[PATCH] staging: gpib: Remove dependencies on !X86_PAE") url: https://github.com/intel-lab-lkp/linux/commits/Dave-Penkler/staging-gpib-Remove-dependencies-on-X86_PAE/20250205-014405 base: https://git.kernel.org/cgit/linux/kernel/git/gregkh/staging.git 7b66aae77da56f2eabd92d3fb012d2fb98212bbd patch link: https://lore.kernel.org/all/20250204174254.16576-1-dpenkler@gmail.com/ patch subject: [PATCH] staging: gpib: Remove dependencies on !X86_PAE in testcase: boot config: i386-randconfig-005-20250211 compiler: gcc-12 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G (please refer to attached dmesg/kmsg for entire log/backtrace) +---------------------------------------------------------------------------+------------+------------+ | | 7b66aae77d | 01b060a1e1 | +---------------------------------------------------------------------------+------------+------------+ | BUG:kernel_NULL_pointer_dereference,address | 0 | 24 | | Oops | 0 | 24 | | EIP:strcmp | 0 | 24 | | Kernel_panic-not_syncing:Fatal_exception | 0 | 24 | +---------------------------------------------------------------------------+------------+------------+ 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 | Closes: https://lore.kernel.org/oe-lkp/202502131453.cb6d2e4a-lkp@intel.com [ 7.884853][ T1] agilent_82357a_gpib driver loading [ 7.884906][ T1] usbcore: registered new interface driver agilent_82357a_gpib [ 7.886405][ T1] BUG: kernel NULL pointer dereference, address: 00000000 [ 7.887131][ T1] #PF: supervisor read access in kernel mode [ 7.887739][ T1] #PF: error_code(0x0000) - not-present page [ 7.888347][ T1] *pdpt = 0000000000000000 *pde = f000ff53f000ff53 [ 7.889046][ T1] Oops: Oops: 0000 [#1] PREEMPT [ 7.889536][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper Not tainted 6.14.0-rc1-00010-g01b060a1e159 #1 f08c34d46b2d33c70805190edc7163ed78d17b6d [ 7.889552][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 7.889552][ T1] EIP: strcmp (arch/x86/lib/string_32.c:100) [ 7.889552][ T1] Code: 8b 4d f0 49 78 06 ac aa 84 c0 75 f7 31 c0 aa 5e 89 d8 5b 5e 5f 5d 31 d2 31 c9 c3 3e 8d 74 26 00 55 89 e5 57 89 d7 56 89 c6 ac 75 08 84 c0 75 f8 31 c0 eb 04 19 c0 0c 01 5e 5f 5d 31 d2 c3 3e All code ======== 0: 8b 4d f0 mov -0x10(%rbp),%ecx 3: 49 78 06 rex.WB js 0xc 6: ac lods %ds:(%rsi),%al 7: aa stos %al,%es:(%rdi) 8: 84 c0 test %al,%al a: 75 f7 jne 0x3 c: 31 c0 xor %eax,%eax e: aa stos %al,%es:(%rdi) f: 5e pop %rsi 10: 89 d8 mov %ebx,%eax 12: 5b pop %rbx 13: 5e pop %rsi 14: 5f pop %rdi 15: 5d pop %rbp 16: 31 d2 xor %edx,%edx 18: 31 c9 xor %ecx,%ecx 1a: c3 ret 1b: 3e 8d 74 26 00 ds lea 0x0(%rsi,%riz,1),%esi 20: 55 push %rbp 21: 89 e5 mov %esp,%ebp 23: 57 push %rdi 24: 89 d7 mov %edx,%edi 26: 56 push %rsi 27: 89 c6 mov %eax,%esi 29: ac lods %ds:(%rsi),%al 2a:* ae scas %es:(%rdi),%al <-- trapping instruction 2b: 75 08 jne 0x35 2d: 84 c0 test %al,%al 2f: 75 f8 jne 0x29 31: 31 c0 xor %eax,%eax 33: eb 04 jmp 0x39 35: 19 c0 sbb %eax,%eax 37: 0c 01 or $0x1,%al 39: 5e pop %rsi 3a: 5f pop %rdi 3b: 5d pop %rbp 3c: 31 d2 xor %edx,%edx 3e: c3 ret 3f: 3e ds Code starting with the faulting instruction =========================================== 0: ae scas %es:(%rdi),%al 1: 75 08 jne 0xb 3: 84 c0 test %al,%al 5: 75 f8 jne 0xffffffffffffffff 7: 31 c0 xor %eax,%eax 9: eb 04 jmp 0xf b: 19 c0 sbb %eax,%eax d: 0c 01 or $0x1,%al f: 5e pop %rsi 10: 5f pop %rdi 11: 5d pop %rbp 12: 31 d2 xor %edx,%edx 14: c3 ret 15: 3e ds [ 7.889552][ T1] EAX: c2f01073 EBX: c66fcd00 ECX: 00000000 EDX: 00000000 [ 7.889552][ T1] ESI: c2f0109f EDI: 00000000 EBP: c4759ea4 ESP: c4759e9c [ 7.889552][ T1] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 EFLAGS: 00010282 [ 7.889552][ T1] CR0: 80050033 CR2: 00000000 CR3: 03a47000 CR4: 000406b0 [ 7.889552][ T1] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 7.889552][ T1] DR6: fffe0ff0 DR7: 00000400 [ 7.889552][ T1] Call Trace: [ 7.889552][ T1] ? show_regs (arch/x86/kernel/dumpstack.c:478) [ 7.889552][ T1] ? __die_body (arch/x86/kernel/dumpstack.c:421) [ 7.889552][ T1] ? __die (arch/x86/kernel/dumpstack.c:435) [ 7.889552][ T1] ? page_fault_oops (arch/x86/mm/fault.c:714) [ 7.889552][ T1] ? kernelmode_fixup_or_oops+0x55/0x63 [ 7.889552][ T1] ? __bad_area_nosemaphore+0x31/0x17b [ 7.889552][ T1] ? bad_area_nosemaphore (arch/x86/mm/fault.c:834) [ 7.889552][ T1] ? do_user_addr_fault (arch/x86/mm/fault.c:1279 (discriminator 1)) [ 7.889552][ T1] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 7.889552][ T1] ? exc_page_fault (arch/x86/include/asm/irqflags.h:26 arch/x86/include/asm/irqflags.h:87 arch/x86/include/asm/irqflags.h:147 arch/x86/mm/fault.c:1488 arch/x86/mm/fault.c:1538) [ 7.889552][ T1] ? pvclock_clocksource_read_nowd (arch/x86/mm/fault.c:1493) [ 7.889552][ T1] ? handle_exception (arch/x86/entry/entry_32.S:1048) [ 7.889552][ T1] ? rs690_fix_64bit_dma (arch/x86/pci/fixup.c:801) [ 7.889552][ T1] ? psi_show (kernel/sched/psi.c:1241) [ 7.889552][ T1] ? pvclock_clocksource_read_nowd (arch/x86/mm/fault.c:1493) [ 7.889552][ T1] ? strcmp (arch/x86/lib/string_32.c:100) [ 7.889552][ T1] ? psi_show (kernel/sched/psi.c:1241) [ 7.889552][ T1] ? pvclock_clocksource_read_nowd (arch/x86/mm/fault.c:1493) [ 7.889552][ T1] ? strcmp (arch/x86/lib/string_32.c:100) [ 7.889552][ T1] kset_find_obj (lib/kobject.c:912) [ 7.889552][ T1] driver_find (drivers/base/bus.c:1333) [ 7.889552][ T1] driver_register (drivers/base/driver.c:243) [ 7.889552][ T1] pcmcia_register_driver (drivers/pcmcia/ds.c:187) [ 7.889552][ T1] cb7210_init_module (drivers/staging/gpib/cb7210/cb7210.c:1571) [ 7.889552][ T1] ? agilent_82357a_init_module (drivers/staging/gpib/cb7210/cb7210.c:1507) [ 7.889552][ T1] do_one_initcall (init/main.c:1257) [ 7.889552][ T1] ? do_initcalls (init/main.c:1317 init/main.c:1335) [ 7.889552][ T1] do_initcalls (init/main.c:1318 init/main.c:1335) [ 7.889552][ T1] ? rest_init (init/main.c:1449) [ 7.889552][ T1] kernel_init_freeable (init/main.c:1570) [ 7.889552][ T1] kernel_init (init/main.c:1459) [ 7.889552][ T1] ret_from_fork (arch/x86/kernel/process.c:154) [ 7.889552][ T1] ? rest_init (init/main.c:1449) [ 7.889552][ T1] ret_from_fork_asm (arch/x86/entry/entry_32.S:737) [ 7.889552][ T1] entry_INT80_32 (arch/x86/entry/entry_32.S:945) [ 7.889552][ T1] Modules linked in: [ 7.889552][ T1] CR2: 0000000000000000 [ 7.889552][ T1] ---[ end trace 0000000000000000 ]--- [ 7.889552][ T1] EIP: strcmp (arch/x86/lib/string_32.c:100) [ 7.889552][ T1] Code: 8b 4d f0 49 78 06 ac aa 84 c0 75 f7 31 c0 aa 5e 89 d8 5b 5e 5f 5d 31 d2 31 c9 c3 3e 8d 74 26 00 55 89 e5 57 89 d7 56 89 c6 ac 75 08 84 c0 75 f8 31 c0 eb 04 19 c0 0c 01 5e 5f 5d 31 d2 c3 3e All code ======== 0: 8b 4d f0 mov -0x10(%rbp),%ecx 3: 49 78 06 rex.WB js 0xc 6: ac lods %ds:(%rsi),%al 7: aa stos %al,%es:(%rdi) 8: 84 c0 test %al,%al a: 75 f7 jne 0x3 c: 31 c0 xor %eax,%eax e: aa stos %al,%es:(%rdi) f: 5e pop %rsi 10: 89 d8 mov %ebx,%eax 12: 5b pop %rbx 13: 5e pop %rsi 14: 5f pop %rdi 15: 5d pop %rbp 16: 31 d2 xor %edx,%edx 18: 31 c9 xor %ecx,%ecx 1a: c3 ret 1b: 3e 8d 74 26 00 ds lea 0x0(%rsi,%riz,1),%esi 20: 55 push %rbp 21: 89 e5 mov %esp,%ebp 23: 57 push %rdi 24: 89 d7 mov %edx,%edi 26: 56 push %rsi 27: 89 c6 mov %eax,%esi 29: ac lods %ds:(%rsi),%al 2a:* ae scas %es:(%rdi),%al <-- trapping instruction 2b: 75 08 jne 0x35 2d: 84 c0 test %al,%al 2f: 75 f8 jne 0x29 31: 31 c0 xor %eax,%eax 33: eb 04 jmp 0x39 35: 19 c0 sbb %eax,%eax 37: 0c 01 or $0x1,%al 39: 5e pop %rsi 3a: 5f pop %rdi The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20250213/202502131453.cb6d2e4a-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki