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Fri, 26 Jun 2026 06:54:36 +0000 Date: Fri, 26 Jun 2026 14:54:29 +0800 From: kernel test robot To: Jim Cromie , =?utf-8?Q?=C5=81ukasz?= Bartosik CC: , , Subject: [jimc:jb-fix] [dynamic_debug] d405145208: Oops:general_protection_fault,probably_for_non-canonical_address#:#[##]SMP_KASAN Message-ID: <202606261437.36507000-lkp@intel.com> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline User-Agent: s-nail v14.9.25 X-ClientProxiedBy: SG2P153CA0018.APCP153.PROD.OUTLOOK.COM (2603:1096::28) To PH0PR11MB5832.namprd11.prod.outlook.com (2603:10b6:510:141::7) Precedence: bulk X-Mailing-List: oe-lkp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH0PR11MB5832:EE_|CH3PR11MB7275:EE_ X-MS-Office365-Filtering-Correlation-Id: a7a59750-4c86-4bd4-3de4-08ded34fc932 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|23010399003|1800799024|366016|3023799007|18002099003|11063799006|56012099006; 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Hello, kernel test robot noticed "Oops:general_protection_fault,probably_for_non-canonical_address#:#[##]SMP_KASAN" on: commit: d4051452089e61a8aa3b39330981fc21d40aa60d ("dynamic_debug: Simplify classmap macros by removing redundant aligned(8) attributes") https://github.com/jimc/linux.git jb-fix in testcase: boot config: x86_64-randconfig-004-20260623 compiler: gcc-14 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 32G (please refer to attached dmesg/kmsg for entire log/backtrace) 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/202606261437.36507000-lkp@intel.com [ 2.487444][ T1] Oops: general protection fault, probably for non-canonical address 0xe007ffe1e0000000: 0000 [#1] SMP KASAN [ 2.487955][ T1] KASAN: maybe wild-memory-access in range [0x00401f0f00000000-0x00401f0f00000007] [ 2.487955][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 7.1.0-00050-gd4051452089e #1 PREEMPTLAZY [ 2.487955][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 2.487955][ T1] RIP: 0010:strcmp (kbuild/src/lib/string.c:283) [ 2.487955][ T1] Code: 41 55 41 54 53 48 89 fb 48 83 ec 08 eb 08 45 84 e4 74 65 4c 89 ee 48 89 df 48 83 c3 01 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 <42> 0f b6 04 30 38 d0 7f 04 84 c0 75 60 48 89 f0 48 89 f2 44 0f b6 All code ======== 0: 41 55 push %r13 2: 41 54 push %r12 4: 53 push %rbx 5: 48 89 fb mov %rdi,%rbx 8: 48 83 ec 08 sub $0x8,%rsp c: eb 08 jmp 0x16 e: 45 84 e4 test %r12b,%r12b 11: 74 65 je 0x78 13: 4c 89 ee mov %r13,%rsi 16: 48 89 df mov %rbx,%rdi 19: 48 83 c3 01 add $0x1,%rbx 1d: 48 89 f8 mov %rdi,%rax 20: 48 89 fa mov %rdi,%rdx 23: 48 c1 e8 03 shr $0x3,%rax 27: 83 e2 07 and $0x7,%edx 2a:* 42 0f b6 04 30 movzbl (%rax,%r14,1),%eax <-- trapping instruction 2f: 38 d0 cmp %dl,%al 31: 7f 04 jg 0x37 33: 84 c0 test %al,%al 35: 75 60 jne 0x97 37: 48 89 f0 mov %rsi,%rax 3a: 48 89 f2 mov %rsi,%rdx 3d: 44 rex.R 3e: 0f .byte 0xf 3f: b6 .byte 0xb6 Code starting with the faulting instruction =========================================== 0: 42 0f b6 04 30 movzbl (%rax,%r14,1),%eax 5: 38 d0 cmp %dl,%al 7: 7f 04 jg 0xd 9: 84 c0 test %al,%al b: 75 60 jne 0x6d d: 48 89 f0 mov %rsi,%rax 10: 48 89 f2 mov %rsi,%rdx 13: 44 rex.R 14: 0f .byte 0xf 15: b6 .byte 0xb6 [ 2.487955][ T1] RSP: 0000:ffffc9000001fc10 EFLAGS: 00010246 [ 2.487955][ T1] RAX: 000803e1e0000000 RBX: 00401f0f00000001 RCX: 000000005555555c [ 2.487955][ T1] RDX: 0000000000000000 RSI: ffffffff88a01760 RDI: 00401f0f00000000 [ 2.487955][ T1] RBP: ffffc9000001fc38 R08: 0000000000000000 R09: 0000000000000000 [ 2.487955][ T1] R10: ffffc9000001fd30 R11: 0000000000000000 R12: 0000000f8d1165e8 [ 2.487955][ T1] R13: ffffc9000001fd30 R14: dffffc0000000000 R15: 0000000000000000 [ 2.487955][ T1] FS: 0000000000000000(0000) GS:ffff888790b4a000(0000) knlGS:0000000000000000 [ 2.487955][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.487955][ T1] CR2: ffff88883ffff000 CR3: 000000000aee4000 CR4: 00000000000406f0 [ 2.487955][ T1] Call Trace: [ 2.487955][ T1] [ 2.487955][ T1] ddebug_add_module (kbuild/src/lib/dynamic_debug.c:1572 (discriminator 8)) [ 2.487955][ T1] ? __up_write (kbuild/src/include/linux/instrumented.h:112 kbuild/src/include/linux/atomic/atomic-instrumented.h:3390 kbuild/src/kernel/locking/rwsem.c:1415) [ 2.487955][ T1] ? up_write (kbuild/src/kernel/locking/rwsem.c:1682) [ 2.487955][ T1] dynamic_debug_init (kbuild/src/lib/dynamic_debug.c:1815) The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260626/202606261437.36507000-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki