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Fri, 20 Mar 2026 07:54:00 +0000 Date: Fri, 20 Mar 2026 15:53:54 +0800 From: kernel test robot To: Mike Rapoport CC: , , Mike Rapoport , Subject: [rppt:free-late/v0.3] [memblock, treewide] bbe3478393: KASAN:use-after-free_in_memblock_isolate_range Message-ID: <202603200841.b2d24d21-lkp@intel.com> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline User-Agent: s-nail v14.9.25 X-ClientProxiedBy: SI1PR02CA0015.apcprd02.prod.outlook.com (2603:1096:4:1f7::18) 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-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH0PR11MB5832:EE_|PH7PR11MB6008:EE_ X-MS-Office365-Filtering-Correlation-Id: 6706cc63-bcec-4c4e-ef80-08de8655d92d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|376014|1800799024|56012099003|18002099003; X-Microsoft-Antispam-Message-Info: tL3I8mnOR33qd4ldUX96JHaSW3VxhrDhTBXOKe1femaJDI1lbPim0RXkdDbh8MaCLnlJdcP01CTNmJ6d32PuFiOhBOeiow7CJ4Uah+JaZYbrtet77gLXh6LcSNuMNwQQn8MFq8AhzG0ec0wrypzfIYs11gLxJ5ngdrn1xz0jcCBuikz+yC7IVRqDSk+E0tx1d2fjtVhqrDwYubMnEEtAHV14Y3iODLzPYM1XSvSTvqIJ1p+kvScIZn/EhdquxgRYuo9LR1eTE34hkoePbEGDEAZ7xAE7OsBXfJMGiolr5NMTwvwoe5a4/Ku/O9vyAbyjkCS6f4T8BMUIGrk36jbFtNxczqKh0sOe6SNDTD5YtEaCQoioqojJigD/YxgrLyLOeIVpN6h3Po1Cyncxg6ajadyY/InytF8dXvZtvcBh477ApdW10EqMZZSP9Mi1v4L79Mys2F6R6XgEL+SlOakQTPp8+TRpKX82mdCgUMxWo8Gkx5AVdXgWTtP5gL3/27Rd7GLsYmqbpjA+kYWLtrzlTKOkoJEbWCqvBFX25hs2qdbGbtf1Q9lAKTW94bR2GmIeWMCEtqg2EUxi3vpDtrxytptQ5E9WJNTz+W/z6rlMDQnN/sLp2850mr9/nDr8zhHmOweFRa8F6NZvdjOi1ztQqjoLwVTHdA3WpNsWMovBYcKqphEl2Qv2tegY+IGijssI X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:PH0PR11MB5832.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(366016)(376014)(1800799024)(56012099003)(18002099003);DIR:OUT;SFP:1101; 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NUC14RVS-B/NUC14RVSU9, BIOS RVMTL357.0047.2025.0108.1408 01/08/2025 kern :err : [ 0.977424] [ T1] Call Trace: kern :err : [ 0.977424] [ T1] kern :err : [ 0.977424] [ T1] dump_stack_lvl (lib/dump_stack.c:122) kern :err : [ 0.977424] [ T1] print_address_description+0x88/0x320 kern :err : [ 0.977424] [ T1] ? memblock_isolate_range (mm/memblock.c:828) kern :err : [ 0.977424] [ T1] print_report (mm/kasan/report.c:483) kern :err : [ 0.977424] [ T1] ? __virt_addr_valid (include/linux/mmzone.h:2114 (discriminator 1) include/linux/mmzone.h:2196 (discriminator 1) arch/x86/mm/physaddr.c:54 (discriminator 1)) kern :err : [ 0.977424] [ T1] ? memblock_isolate_range (mm/memblock.c:828) kern :err : [ 0.977424] [ T1] kasan_report (mm/kasan/report.c:597) kern :err : [ 0.977424] [ T1] ? memblock_isolate_range (mm/memblock.c:828) kern :err : [ 0.977424] [ T1] memblock_isolate_range (mm/memblock.c:828) kern :err : [ 0.977424] [ T1] memblock_phys_free (mm/memblock.c:875 mm/memblock.c:991) kern :err : [ 0.977424] [ T1] ? __cpuhp_setup_state_cpuslocked (kernel/cpu.c:2522) kern :err : [ 0.977424] [ T1] ? __pfx_memblock_phys_free (mm/memblock.c:981) kern :err : [ 0.977424] [ T1] ? __pfx_buffer_exit_cpu_dead (fs/buffer.c:3051) kern :err : [ 0.977424] [ T1] ? __cpuhp_setup_state (kernel/cpu.c:2536) kern :err : [ 0.977424] [ T1] ? buffer_init (fs/buffer.c:3162 (discriminator 1)) kern :err : [ 0.977424] [ T1] memblock_discard (mm/memblock.c:398) kern :err : [ 0.977424] [ T1] page_alloc_init_late (include/linux/find.h:214 include/linux/nodemask.h:253 mm/mm_init.c:2345) kern :err : [ 0.977424] [ T1] kernel_init_freeable (init/main.c:1475 init/main.c:1692) kern :err : [ 0.977424] [ T1] ? __pfx_kernel_init_freeable (init/main.c:1664) kern :err : [ 0.977424] [ T1] ? __pfx_schedule_timeout (kernel/time/sleep_timeout.c:62) kern :err : [ 0.977424] [ T1] ? __pfx__raw_spin_lock_irq (kernel/locking/spinlock.c:169) kern :err : [ 0.977424] [ T1] ? __pfx_kernel_init (init/main.c:1574) kern :err : [ 0.977424] [ T1] ? __pfx_kernel_init (init/main.c:1574) kern :err : [ 0.977424] [ T1] kernel_init (init/main.c:1584) kern :err : [ 0.977424] [ T1] ? __pfx_kernel_init (init/main.c:1574) kern :err : [ 0.977424] [ T1] ret_from_fork (arch/x86/kernel/process.c:164) kern :err : [ 0.977424] [ T1] ? __pfx_ret_from_fork (arch/x86/kernel/process.c:153) kern :err : [ 0.977424] [ T1] ? switch_fpu (arch/x86/include/asm/bitops.h:202 (discriminator 1) arch/x86/include/asm/bitops.h:232 (discriminator 1) include/asm-generic/bitops/instrumented-non-atomic.h:142 (discriminator 1) include/linux/thread_info.h:133 (discriminator 1) include/linux/sched.h:2064 (discriminator 1) arch/x86/include/asm/fpu/sched.h:34 (discriminator 1)) kern :err : [ 0.977424] [ T1] ? __switch_to (arch/x86/include/asm/cpufeature.h:101 arch/x86/kernel/process_64.c:377 arch/x86/kernel/process_64.c:665) kern :err : [ 0.977424] [ T1] ? __pfx_kernel_init (init/main.c:1574) kern :err : [ 0.977424] [ T1] ret_from_fork_asm (arch/x86/entry/entry_64.S:255) kern :err : [ 0.977424] [ T1] kern :err : [ 0.977424] [ T1] The buggy address belongs to the physical page: kern :warn : [ 0.977424] [ T1] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x87f3aa kern :warn : [ 0.977424] [ T1] flags: 0x17ffffc0000000(node=0|zone=2|lastcpupid=0x1fffff) kern :warn : [ 0.977424] [ T1] raw: 0017ffffc0000000 ffff88880a4c7f30 ffffea0021fceac8 0000000000000000 kern :warn : [ 0.977424] [ T1] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 kern :warn : [ 0.977424] [ T1] page dumped because: kasan: bad access detected kern :err : [ 0.977424] [ T1] Memory state around the buggy address: kern :err : [ 0.977424] [ T1] ffff88887f3a9f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 kern :err : [ 0.977424] [ T1] ffff88887f3a9f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 kern :err : [ 0.977424] [ T1] >ffff88887f3aa000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff kern :err : [ 0.977424] [ T1] ^ kern :err : [ 0.977424] [ T1] ffff88887f3aa080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff kern :err : [ 0.977424] [ T1] ffff88887f3aa100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff kern :err : [ 0.977424] [ T1] ================================================================== The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260320/202603200841.b2d24d21-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki