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GoNUi99VbwQRshXqYDkhENpwQzdNMZkln+4rMOEn6vPSGMd91FtomhxnemhA7+sQK2vv6tvmc4JXq+07sfCEzfWl+pfEfDDJMcdPSxAs0y+UGSFduSQzy8F1uOgFz1ZqGdD74dpVVC2QIqo7LH5eF3mBOXnq63lo3Bjeam8mCA0OBb5Xk5oWdIQACKShbm3nHWVeaWDmmAsJFCOdc5h+8iPxLLg73yzvHUo8YC+xNShtqyfWuxrNwHP7crwnhDh199wLCBugkZow/L/aYz8NxzmHpuaA7dKeg0EbknxBo9WwHOqAMhW55KYYT4Zh7xVhlWjuD61htMvMnVN/GAfiZWGCeOrrQES0ZMsnyMB7L73zEp/vepbk+paVmnIcf3f1lUy0XCY/RdjUzp3yQRKfKVFuDdgzw9bYcgDKyqFnR1Dgh5/5kBVVg1ewFKvUK1beGRO6Wvs4sInhN7G4WHFJc8O0bhZib6NhV0Dah8ByQZrhuumXRE7Omsa6jq2m7fLLnrUoomznafm5X+qD55qqqjCnEl/XCkV4Fht9SS5Ez474IhgY2gVVCSSYpWtA2VQ4FYqsf X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, kernel test robot noticed "kernel_BUG_at_include/linux/page-flags.h" on: commit: 3e721b4c4250773f06818e43821a30108775a59b ("[PATCH 4/5] mm: Add PageAnonNotKsm()") url: https://github.com/intel-lab-lkp/linux/commits/Matthew-Wilcox-Oracle/ksm-Use-a-folio-in-try_to_merge_one_page/20241002-232657 base: https://git.kernel.org/cgit/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/all/20241002152533.1350629-5-willy@infradead.org/ patch subject: [PATCH 4/5] mm: Add PageAnonNotKsm() in testcase: boot compiler: clang-18 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G (please refer to attached dmesg/kmsg for entire log/backtrace) +------------------------------------------+------------+------------+ | | 3e3e3b90a7 | 3e721b4c42 | +------------------------------------------+------------+------------+ | boot_successes | 6 | 0 | | boot_failures | 0 | 6 | | kernel_BUG_at_include/linux/page-flags.h | 0 | 6 | | Oops:invalid_opcode:#[##]SMP | 0 | 6 | | RIP:folio_add_new_anon_rmap | 0 | 6 | | Kernel_panic-not_syncing:Fatal_exception | 0 | 6 | +------------------------------------------+------------+------------+ 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/202410062122.193c5b0e-oliver.sang@intel.com [ 219.772371][ T65] ------------[ cut here ]------------ [ 219.783937][ T65] kernel BUG at include/linux/page-flags.h:1139! [ 219.798558][ T65] Oops: invalid opcode: 0000 [#1] SMP [ 219.800949][ T65] CPU: 1 UID: 0 PID: 65 Comm: kworker/u10:1 Tainted: G T 6.12.0-rc1-00097-g3e721b4c4250 #1 [ 219.800949][ T65] Tainted: [T]=RANDSTRUCT [ 219.800949][ T65] RIP: 0010:folio_add_new_anon_rmap (include/linux/page-flags.h:1139) [ 219.800949][ T65] Code: 40 ec ff 48 89 df 48 c7 c6 1a 3c 7b 90 e8 78 58 fc ff 90 0f 0b e8 40 d9 e7 ff 4c 89 ff 48 c7 c6 ef 26 78 90 e8 61 58 fc ff 90 <0f> 0b e8 29 d9 e7 ff 4c 89 ff 48 c7 c6 d9 61 68 90 e8 4a 58 fc ff All code ======== 0: 40 ec rex in (%dx),%al 2: ff 48 89 decl -0x77(%rax) 5: df 48 c7 fisttps -0x39(%rax) 8: c6 (bad) 9: 1a 3c 7b sbb (%rbx,%rdi,2),%bh c: 90 nop d: e8 78 58 fc ff call 0xfffffffffffc588a 12: 90 nop 13: 0f 0b ud2 15: e8 40 d9 e7 ff call 0xffffffffffe7d95a 1a: 4c 89 ff mov %r15,%rdi 1d: 48 c7 c6 ef 26 78 90 mov $0xffffffff907826ef,%rsi 24: e8 61 58 fc ff call 0xfffffffffffc588a 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: e8 29 d9 e7 ff call 0xffffffffffe7d95a 31: 4c 89 ff mov %r15,%rdi 34: 48 c7 c6 d9 61 68 90 mov $0xffffffff906861d9,%rsi 3b: e8 4a 58 fc ff call 0xfffffffffffc588a Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: e8 29 d9 e7 ff call 0xffffffffffe7d930 7: 4c 89 ff mov %r15,%rdi a: 48 c7 c6 d9 61 68 90 mov $0xffffffff906861d9,%rsi 11: e8 4a 58 fc ff call 0xfffffffffffc5860 [ 219.800949][ T65] RSP: 0000:ffff90094044fae8 EFLAGS: 00010246 [ 219.800949][ T65] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 219.800949][ T65] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 219.800949][ T65] RBP: ffff90094044fb28 R08: 0000000000000000 R09: 0000000000000000 [ 219.800949][ T65] R10: 0000000000000000 R11: 0000000000000000 R12: ffff900940107000 [ 219.800949][ T65] R13: 00000007fffffffe R14: 0000000000000000 R15: fffff9dd10bf0ec0 [ 219.800949][ T65] FS: 0000000000000000(0000) GS:ffff900c2fd00000(0000) knlGS:0000000000000000 [ 219.800949][ T65] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 219.800949][ T65] CR2: 0000000000000000 CR3: 00000000a1a37000 CR4: 00000000000006b0 [ 219.800949][ T65] Call Trace: [ 219.800949][ T65] [ 219.800949][ T65] ? __die_body (arch/x86/kernel/dumpstack.c:421) [ 219.800949][ T65] ? die (arch/x86/kernel/dumpstack.c:?) [ 219.800949][ T65] ? do_trap (arch/x86/kernel/traps.c:171 arch/x86/kernel/traps.c:197) [ 219.800949][ T65] ? do_error_trap (arch/x86/kernel/traps.c:217) [ 219.800949][ T65] ? folio_add_new_anon_rmap (include/linux/page-flags.h:1139) [ 219.800949][ T65] ? handle_invalid_op (arch/x86/kernel/traps.c:254) [ 219.800949][ T65] ? folio_add_new_anon_rmap (include/linux/page-flags.h:1139) [ 219.800949][ T65] ? exc_invalid_op (arch/x86/kernel/traps.c:315) [ 219.800949][ T65] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:621) [ 219.800949][ T65] ? folio_add_new_anon_rmap (include/linux/page-flags.h:1139) [ 219.800949][ T65] ? folio_add_new_anon_rmap (include/linux/page-flags.h:1139) [ 219.800949][ T65] handle_pte_fault (mm/memory.c:4842) [ 219.800949][ T65] ? ftrace_likely_update (kernel/trace/trace_branch.c:?) [ 219.800949][ T65] handle_mm_fault (mm/memory.c:?) [ 219.800949][ T65] ? handle_mm_fault (arch/x86/include/asm/current.h:49 mm/memory.c:6062) [ 219.800949][ T65] __get_user_pages (mm/gup.c:1189) [ 219.800949][ T65] ? ftrace_likely_update (kernel/trace/trace_branch.c:?) [ 219.800949][ T65] ? is_valid_gup_args (mm/gup.c:2546) [ 219.800949][ T65] get_user_pages_remote (mm/gup.c:?) [ 219.800949][ T65] get_arg_page (fs/exec.c:225) [ 219.800949][ T65] copy_string_kernel (fs/exec.c:685) [ 219.800949][ T65] ? __cond_resched (kernel/sched/core.c:?) [ 219.800949][ T65] kernel_execve (fs/exec.c:2000) [ 219.800949][ T65] call_usermodehelper_exec_async (kernel/umh.c:110) [ 219.800949][ T65] ? __cfi_call_usermodehelper_exec_async (kernel/umh.c:65) [ 219.800949][ T65] ret_from_fork (arch/x86/kernel/process.c:153) [ 219.800949][ T65] ? __cfi_call_usermodehelper_exec_async (kernel/umh.c:65) [ 219.800949][ T65] ret_from_fork_asm (arch/x86/entry/entry_64.S:257) [ 219.800949][ T65] [ 219.800949][ T65] Modules linked in: [ 220.299454][ T65] ---[ end trace 0000000000000000 ]--- [ 220.310211][ T65] RIP: 0010:folio_add_new_anon_rmap (include/linux/page-flags.h:1139) [ 220.322429][ T65] Code: 40 ec ff 48 89 df 48 c7 c6 1a 3c 7b 90 e8 78 58 fc ff 90 0f 0b e8 40 d9 e7 ff 4c 89 ff 48 c7 c6 ef 26 78 90 e8 61 58 fc ff 90 <0f> 0b e8 29 d9 e7 ff 4c 89 ff 48 c7 c6 d9 61 68 90 e8 4a 58 fc ff All code ======== 0: 40 ec rex in (%dx),%al 2: ff 48 89 decl -0x77(%rax) 5: df 48 c7 fisttps -0x39(%rax) 8: c6 (bad) 9: 1a 3c 7b sbb (%rbx,%rdi,2),%bh c: 90 nop d: e8 78 58 fc ff call 0xfffffffffffc588a 12: 90 nop 13: 0f 0b ud2 15: e8 40 d9 e7 ff call 0xffffffffffe7d95a 1a: 4c 89 ff mov %r15,%rdi 1d: 48 c7 c6 ef 26 78 90 mov $0xffffffff907826ef,%rsi 24: e8 61 58 fc ff call 0xfffffffffffc588a 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: e8 29 d9 e7 ff call 0xffffffffffe7d95a 31: 4c 89 ff mov %r15,%rdi 34: 48 c7 c6 d9 61 68 90 mov $0xffffffff906861d9,%rsi 3b: e8 4a 58 fc ff call 0xfffffffffffc588a Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: e8 29 d9 e7 ff call 0xffffffffffe7d930 7: 4c 89 ff mov %r15,%rdi a: 48 c7 c6 d9 61 68 90 mov $0xffffffff906861d9,%rsi 11: e8 4a 58 fc ff call 0xfffffffffffc5860 The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20241006/202410062122.193c5b0e-oliver.sang@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki