------------[ cut here ]------------
kernel BUG at [] mm/page_table_check.c:118!
Kernel BUG [#1]
Modules linked in:
CPU: 0 UID: 0 PID: 5815 Comm: syz.0.742 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: riscv-virtio,qemu (DT)
epc : page_table_check_set+0x912/0xb98 mm/page_table_check.c:118
 ra : page_table_check_set+0x912/0xb98 mm/page_table_check.c:118
epc : ffffffff80c9f576 ra : ffffffff80c9f576 sp : ffff8f80023f7020
 gp : ffffffff8b127580 tp : ffffaf801c37d040 t0 : ffff8f80023f75b8
 t1 : fffff5ef02935c09 t2 : ffffffff86c06d80 s0 : ffff8f80023f70a0
 s1 : 0000000000000001 a0 : 0000000000000001 a1 : 0000000000000000
 a2 : 0000000000080000 a3 : ffffffff80c9f576 a4 : ffff8f80048d60c8
 a5 : 000000000002d0c8 a6 : 0000000000000003 a7 : ffffaf80149ae04b
 s2 : 00000000000b5600 s3 : 0000000000000000 s4 : ffffaf80149ae000
 s5 : 0000000000000200 s6 : 0000000000000001 s7 : dfffffff00000000
 s8 : ffffffff8986e0c0 s9 : 0000000000007fff s10: 0000000000000000
 s11: ffffffff8b248360 t3 : 00000000000000c8 t4 : fffff5ef02935c09
 t5 : fffff5ef02935c0a t6 : 0000000000000002 ssp : 0000000000000000
status: 0000000200000120 badaddr: ffffffff80c9f576 cause: 0000000000000003
[<ffffffff80c9f576>] page_table_check_set+0x912/0xb98 mm/page_table_check.c:118
[<ffffffff80c9fc9c>] __page_table_check_ptes_set+0x23c/0x4a4 mm/page_table_check.c:223
[<ffffffff80c2ab8a>] page_table_check_ptes_set include/linux/page_table_check.h:83 [inline]
[<ffffffff80c2ab8a>] set_ptes arch/riscv/include/asm/pgtable.h:642 [inline]
[<ffffffff80c2ab8a>] __split_huge_pmd_locked mm/huge_memory.c:3458 [inline]
[<ffffffff80c2ab8a>] split_huge_pmd_locked+0x1e96/0x22e0 mm/huge_memory.c:3476
[<ffffffff80c2b178>] __split_huge_pmd+0x1a4/0x2aa mm/huge_memory.c:3490
[<ffffffff80c2d9e0>] split_huge_pmd_address mm/huge_memory.c:3503 [inline]
[<ffffffff80c2d9e0>] split_huge_pmd_if_needed mm/huge_memory.c:3515 [inline]
[<ffffffff80c2d9e0>] split_huge_pmd_if_needed mm/huge_memory.c:3506 [inline]
[<ffffffff80c2d9e0>] vma_adjust_trans_huge+0x272/0x4b2 mm/huge_memory.c:3527
[<ffffffff80afbfdc>] __split_vma+0xbc2/0x1db8 mm/vma.c:601
[<ffffffff80aff322>] split_vma mm/vma.c:643 [inline]
[<ffffffff80aff322>] vma_modify+0xc8e/0x21be mm/vma.c:1779
[<ffffffff80b0725a>] vma_modify_flags+0x278/0x3a4 mm/vma.c:1799
[<ffffffff80aa1b30>] mprotect_fixup+0x1c8/0xa56 mm/mprotect.c:824
[<ffffffff80aa2a1e>] do_mprotect_pkey.constprop.0+0x660/0xb1c mm/mprotect.c:1002
[<ffffffff80aa2f46>] __do_sys_mprotect mm/mprotect.c:1023 [inline]
[<ffffffff80aa2f46>] __se_sys_mprotect mm/mprotect.c:1020 [inline]
[<ffffffff80aa2f46>] __riscv_sys_mprotect+0x6c/0x1b2 mm/mprotect.c:1020
[<ffffffff8007dc50>] syscall_handler+0x92/0x114 arch/riscv/include/asm/syscall.h:112
[<ffffffff8663070a>] do_trap_ecall_u+0x4ca/0x658 arch/riscv/kernel/traps.c:341
[<ffffffff8665d064>] handle_exception+0x168/0x174 arch/riscv/kernel/entry.S:237
Code: 8097 ff89 80e7 2bc0 8ce3 bc04 8097 ff89 80e7 7ba0 (9002) 8097 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	ff898097          	auipc	ra,0xff898
   4:	2bc080e7          	jalr	700(ra) # 0xff8982bc
   8:	bc048ce3          	beqz	s1,0xfffffffffffffbe0
   c:	ff898097          	auipc	ra,0xff898
  10:	7ba080e7          	jalr	1978(ra) # 0xff8987c6
* 14:	9002                	ebreak <-- trapping instruction
  16:	9780                	.short	0x8097