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X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR11MB7720 X-OriginatorOrg: intel.com Hello, kernel test robot noticed "WARNING:at_mm/page_alloc.c:#__add_to_free_list" on: commit: c095828c286182c38cfc8837ca4fec8bc4bdb81d ("[PATCH v4 2/4] mm/page_isolation: remove migratetype from move_freepages_block_isolate()") url: https://github.com/intel-lab-lkp/linux/commits/Zi-Yan/mm-page_isolation-make-page-isolation-a-standalone-bit/20250510-040418 patch link: https://lore.kernel.org/all/20250509200111.3372279-3-ziy@nvidia.com/ patch subject: [PATCH v4 2/4] mm/page_isolation: remove migratetype from move_freepages_block_isolate() in testcase: boot config: x86_64-kexec compiler: clang-20 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G (please refer to attached dmesg/kmsg for entire log/backtrace) +-------------------------------------------------------+------------+------------+ | | 8e72f4e133 | c095828c28 | +-------------------------------------------------------+------------+------------+ | WARNING:at_mm/page_alloc.c:#__add_to_free_list | 0 | 24 | | RIP:__add_to_free_list | 0 | 24 | | WARNING:at_mm/page_alloc.c:#__del_page_from_free_list | 0 | 24 | | RIP:__del_page_from_free_list | 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/202505121332.74fc97c-lkp@intel.com [ 0.337813][ T0] ------------[ cut here ]------------ [ 0.338214][ T0] page type is 0, passed migratetype is 2 (nr=512) [ 0.338706][ T0] WARNING: CPU: 0 PID: 0 at mm/page_alloc.c:703 __add_to_free_list (kbuild/obj/consumer/x86_64-kexec/mm/page_alloc.c:701) [ 0.339381][ T0] Modules linked in: [ 0.339666][ T0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.15.0-rc5-next-20250509-00002-gc095828c2861 #1 PREEMPT(voluntary) [ 0.340589][ T0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 0.341361][ T0] RIP: 0010:__add_to_free_list (kbuild/obj/consumer/x86_64-kexec/mm/page_alloc.c:701) [ 0.341789][ T0] Code: 48 c1 fe 06 ba 87 00 00 00 e8 53 5f ff ff 84 c0 be 05 00 00 00 48 0f 49 f0 48 c7 c7 b3 9b 7b 82 89 ea 44 89 f1 e8 b7 71 cd ff <0f> 0b e9 35 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 All code ======== 0: 48 c1 fe 06 sar $0x6,%rsi 4: ba 87 00 00 00 mov $0x87,%edx 9: e8 53 5f ff ff call 0xffffffffffff5f61 e: 84 c0 test %al,%al 10: be 05 00 00 00 mov $0x5,%esi 15: 48 0f 49 f0 cmovns %rax,%rsi 19: 48 c7 c7 b3 9b 7b 82 mov $0xffffffff827b9bb3,%rdi 20: 89 ea mov %ebp,%edx 22: 44 89 f1 mov %r14d,%ecx 25: e8 b7 71 cd ff call 0xffffffffffcd71e1 2a:* 0f 0b ud2 <-- trapping instruction 2c: e9 35 ff ff ff jmp 0xffffffffffffff66 31: 90 nop 32: 90 nop 33: 90 nop 34: 90 nop 35: 90 nop 36: 90 nop 37: 90 nop 38: 90 nop 39: 90 nop 3a: 90 nop 3b: 90 nop 3c: 90 nop 3d: 90 nop 3e: 90 nop 3f: 90 nop Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: e9 35 ff ff ff jmp 0xffffffffffffff3c 7: 90 nop 8: 90 nop 9: 90 nop a: 90 nop b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop [ 0.343261][ T0] RSP: 0000:ffffffff82a038c8 EFLAGS: 00010046 [ 0.343707][ T0] RAX: 0000000000000000 RBX: ffff88843fff1528 RCX: 0000000000000001 [ 0.344296][ T0] RDX: ffffffff82a036b8 RSI: 00000000ffff7fff RDI: 0000000000000001 [ 0.344885][ T0] RBP: 0000000000000002 R08: 0000000000000000 R09: ffffffff82a036b0 [ 0.345473][ T0] R10: 00000000ffff7fff R11: 0000000000000001 R12: ffffea0004328000 [ 0.346062][ T0] R13: 0000000000000002 R14: 0000000000000200 R15: 0000000000000009 [ 0.346650][ T0] FS: 0000000000000000(0000) GS:ffff8884ac41b000(0000) knlGS:0000000000000000 [ 0.347330][ T0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 0.347813][ T0] CR2: ffff88843ffff000 CR3: 0000000002a30000 CR4: 00000000000000b0 [ 0.348625][ T0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 0.349523][ T0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 0.350424][ T0] Call Trace: [ 0.350791][ T0] [ 0.351122][ T0] try_to_claim_block (kbuild/obj/consumer/x86_64-kexec/mm/page_alloc.c:616) [ 0.351662][ T0] __rmqueue_pcplist (kbuild/obj/consumer/x86_64-kexec/mm/page_alloc.c:2280) [ 0.352211][ T0] ? string (kbuild/obj/consumer/x86_64-kexec/lib/vsprintf.c:718) [ 0.352641][ T0] ? string (kbuild/obj/consumer/x86_64-kexec/lib/vsprintf.c:718) [ 0.353067][ T0] ? move_right (kbuild/obj/consumer/x86_64-kexec/lib/vsprintf.c:?) [ 0.353553][ T0] get_page_from_freelist (kbuild/obj/consumer/x86_64-kexec/mm/page_alloc.c:3178) [ 0.354182][ T0] ? sprintf (kbuild/obj/consumer/x86_64-kexec/lib/vsprintf.c:3039) [ 0.354632][ T0] ? prb_first_seq (kbuild/obj/consumer/x86_64-kexec/kernel/printk/printk_ringbuffer.c:1963) [ 0.355163][ T0] __alloc_frozen_pages_noprof (kbuild/obj/consumer/x86_64-kexec/mm/page_alloc.c:5028) [ 0.355786][ T0] alloc_pages_mpol (kbuild/obj/consumer/x86_64-kexec/mm/mempolicy.c:2411) [ 0.356329][ T0] new_slab (kbuild/obj/consumer/x86_64-kexec/mm/slub.c:2454) [ 0.356780][ T0] ___slab_alloc (kbuild/obj/consumer/x86_64-kexec/arch/x86/include/asm/preempt.h:80 kbuild/obj/consumer/x86_64-kexec/mm/slub.c:3859) [ 0.357310][ T0] ? pcpu_block_refresh_hint (kbuild/obj/consumer/x86_64-kexec/include/linux/find.h:69) [ 0.357916][ T0] ? radix_tree_node_alloc (kbuild/obj/consumer/x86_64-kexec/include/linux/radix-tree.h:57 kbuild/obj/consumer/x86_64-kexec/lib/radix-tree.c:278) [ 0.358495][ T0] __slab_alloc (kbuild/obj/consumer/x86_64-kexec/arch/x86/include/asm/preempt.h:95 kbuild/obj/consumer/x86_64-kexec/mm/slub.c:3950) [ 0.358983][ T0] kmem_cache_alloc_noprof (kbuild/obj/consumer/x86_64-kexec/mm/slub.c:4023) [ 0.359609][ T0] ? radix_tree_node_alloc (kbuild/obj/consumer/x86_64-kexec/include/linux/radix-tree.h:57 kbuild/obj/consumer/x86_64-kexec/lib/radix-tree.c:278) [ 0.360207][ T0] radix_tree_node_alloc (kbuild/obj/consumer/x86_64-kexec/include/linux/radix-tree.h:57 kbuild/obj/consumer/x86_64-kexec/lib/radix-tree.c:278) [ 0.360783][ T0] idr_get_free (kbuild/obj/consumer/x86_64-kexec/lib/radix-tree.c:1508) [ 0.361266][ T0] idr_alloc_u32 (kbuild/obj/consumer/x86_64-kexec/include/linux/err.h:70 kbuild/obj/consumer/x86_64-kexec/lib/idr.c:47) [ 0.361765][ T0] idr_alloc (kbuild/obj/consumer/x86_64-kexec/lib/idr.c:88) [ 0.362220][ T0] init_cpu_worker_pool (kbuild/obj/consumer/x86_64-kexec/kernel/workqueue.c:714 kbuild/obj/consumer/x86_64-kexec/kernel/workqueue.c:7733) [ 0.362798][ T0] workqueue_init_early (kbuild/obj/consumer/x86_64-kexec/kernel/workqueue.c:7803) [ 0.363372][ T0] start_kernel (kbuild/obj/consumer/x86_64-kexec/init/main.c:991) [ 0.363882][ T0] x86_64_start_reservations (??:?) [ 0.364494][ T0] x86_64_start_kernel (kbuild/obj/consumer/x86_64-kexec/arch/x86/kernel/head64.c:238) [ 0.365039][ T0] common_startup_64 (kbuild/obj/consumer/x86_64-kexec/arch/x86/kernel/head_64.S:419) [ 0.365589][ T0] [ 0.365919][ T0] ---[ end trace 0000000000000000 ]--- The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20250512/202505121332.74fc97c-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki