------------[ cut here ]------------ kernel BUG at [] mm/page_table_check.c:118! Kernel BUG [#1] Modules linked in: CPU: 0 UID: 0 PID: 3952 Comm: syz.0.37 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: riscv-virtio,qemu (DT) epc : page_table_check_set+0x9ca/0xc72 mm/page_table_check.c:118 ra : page_table_check_set+0x9ca/0xc72 mm/page_table_check.c:118 epc : ffffffff80c81160 ra : ffffffff80c81160 sp : ffff8f800a0c61d0 gp : ffffffff8a4a0660 tp : ffffaf801afe3580 t0 : 0000000000000000 t1 : fffff5ef0279f409 t2 : ffffffff918772e0 s0 : ffff8f800a0c6250 s1 : 0000000000000001 a0 : 0000000000000001 a1 : 0000000000000000 a2 : 0000000000080000 a3 : ffffffff80c81160 a4 : ffff8f8005242438 a5 : 00000000000a5438 a6 : 0000000000000003 a7 : ffffaf8013cfa04b s2 : 00000000000b3200 s3 : 0000000000000000 s4 : ffffaf8013cfa000 s5 : 0000000000000001 s6 : 0000000000000001 s7 : dfffffff00000000 s8 : ffffffff88c5a280 s9 : 0000000000007fff s10: 0000000000000000 s11: ffffffff8a5bece0 t3 : 0000000000000001 t4 : fffff5ef0279f409 t5 : fffff5ef0279f40a t6 : 0000000000000002 ssp : 0000000000000000 status: 0000000200000120 badaddr: ffffffff80c81160 cause: 0000000000000003 [] page_table_check_set+0x9ca/0xc72 mm/page_table_check.c:118 [] __page_table_check_ptes_set+0x264/0x47c mm/page_table_check.c:212 [] page_table_check_ptes_set include/linux/page_table_check.h:83 [inline] [] set_ptes arch/riscv/include/asm/pgtable.h:645 [inline] [] remove_migration_pte+0x10e2/0x2256 mm/migrate.c:436 [] rmap_walk_anon+0x30e/0x690 mm/rmap.c:3001 [] rmap_walk_locked+0xa6/0xca mm/rmap.c:3117 [] remove_migration_ptes+0x18a/0x1bc mm/migrate.c:471 [] remap_page mm/huge_memory.c:3482 [inline] [] __folio_split+0xce8/0x140e mm/huge_memory.c:4114 [] __split_huge_page_to_list_to_order mm/huge_memory.c:4244 [inline] [] split_huge_page_to_list_to_order include/linux/huge_mm.h:415 [inline] [] split_folio_to_list+0x4c/0x5e mm/huge_memory.c:4308 [] shrink_folio_list+0x21d8/0x4d90 mm/vmscan.c:1284 [] reclaim_folio_list+0x134/0x8ee mm/vmscan.c:2171 [] reclaim_pages+0x33e/0x4b8 mm/vmscan.c:2208 [] madvise_cold_or_pageout_pte_range+0x1b72/0x23ac mm/madvise.c:443 [] walk_pmd_range mm/pagewalk.c:148 [inline] [] walk_pud_range mm/pagewalk.c:239 [inline] [] walk_p4d_range mm/pagewalk.c:280 [inline] [] walk_pgd_range+0xd12/0x1eca mm/pagewalk.c:321 [] __walk_page_range+0x138/0x7a8 mm/pagewalk.c:429 [] walk_page_range_vma_unsafe+0x1ec/0x82c mm/pagewalk.c:733 [] walk_page_range_vma+0x5a/0x84 mm/pagewalk.c:743 [] madvise_pageout_page_range mm/madvise.c:621 [inline] [] madvise_pageout+0x26c/0x7c4 mm/madvise.c:646 [] madvise_vma_behavior+0x72c/0x1eac mm/madvise.c:1357 [] madvise_walk_vmas+0x23a/0x976 mm/madvise.c:1712 [] madvise_do_behavior+0x1ea/0x5be mm/madvise.c:1907 [] do_madvise+0x23a/0x294 mm/madvise.c:2005 [] __do_sys_madvise mm/madvise.c:2014 [inline] [] __se_sys_madvise mm/madvise.c:2012 [inline] [] __riscv_sys_madvise+0x88/0xdc mm/madvise.c:2012 [] syscall_handler+0x92/0x114 arch/riscv/include/asm/syscall.h:112 [] do_trap_ecall_u+0x3e4/0x636 arch/riscv/kernel/traps.c:342 [] handle_exception+0x168/0x174 arch/riscv/kernel/entry.S:237 Code: c097 ff8a 80e7 3560 82e3 e404 d097 ff8a 80e7 8540 (9002) d097 ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: ff8ac097 auipc ra,0xff8ac 4: 356080e7 jalr 854(ra) # 0xff8ac356 8: e40482e3 beqz s1,0xfffffffffffffe4c c: ff8ad097 auipc ra,0xff8ad 10: 854080e7 jalr -1964(ra) # 0xff8ac860 * 14: 9002 ebreak <-- trapping instruction 16: 97d0 .short 0xd097