BUG: unable to handle kernel paging request at ffffeafff8fa0020 IP: [] __read_once_size include/linux/compiler.h:243 [inline] IP: [] compound_head include/linux/page-flags.h:143 [inline] IP: [] PageMlocked include/linux/page-flags.h:327 [inline] IP: [] __split_huge_pmd+0x391/0x1870 mm/huge_memory.c:1773 PGD 0 [ 89.161979] Oops: 0000 [#1] PREEMPT SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 8663 Comm: syz-executor2 Not tainted 4.9.122-g54068d6 #30 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801a8740000 task.stack: ffff8801bdfb8000 RIP: 0010:[] [] __read_once_size include/linux/compiler.h:243 [inline] RIP: 0010:[] [] compound_head include/linux/page-flags.h:143 [inline] RIP: 0010:[] [] PageMlocked include/linux/page-flags.h:327 [inline] RIP: 0010:[] [] __split_huge_pmd+0x391/0x1870 mm/huge_memory.c:1773 RSP: 0018:ffff8801bdfbf9c0 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffffeafff8fa0000 RCX: ffffc90003085000 RDX: 1ffffd5fff1f4004 RSI: ffffffff8154df6e RDI: ffffeafff8fa0020 RBP: ffff8801bdfbfaf0 R08: ffff8801a8740910 R09: 0000000000000001 R10: ffff8801a8740000 R11: 1ffff100350e811d R12: ffffea0000000000 R13: 0000000000000000 R14: ffff8801c8c9c040 R15: ffff8801d7d44800 FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f572eb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: ffffeafff8fa0020 CR3: 00000001cfe41000 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffffffff810d3f06 ffff8801bdfbfa78 0000000000000000 ffff8801a8740000 ffffed00350e8118 ffff8801a87408c8 ffffffff846df420 0000000000000000 ffff8801bdfbfa40 ffffffff812324a2 ffff8801d3e4d228 1ffff10037bf7f4d Call Trace: [] move_page_tables+0x602/0x1420 mm/mremap.c:230 [] move_vma+0x2a1/0x930 mm/mremap.c:292 [] mremap_to mm/mremap.c:462 [inline] [] SYSC_mremap mm/mremap.c:526 [inline] [] SyS_mremap+0x979/0xd20 mm/mremap.c:492 [] do_syscall_32_irqs_on arch/x86/entry/common.c:325 [inline] [] do_fast_syscall_32+0x2f7/0x870 arch/x86/entry/common.c:387 [] entry_SYSENTER_compat+0x90/0xa2 arch/x86/entry/entry_64_compat.S:137 Code: ff df 4c 21 e3 49 bc 00 00 00 00 00 ea ff ff 48 c1 eb 06 4c 01 e3 48 8d 7b 20 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 14 13 00 00 <4c> 8b 6b 20 49 89 dc 41 f6 c5 01 0f 85 ab 0a 00 00 e8 b9 2d e1 RIP [] __read_once_size include/linux/compiler.h:243 [inline] RIP [] compound_head include/linux/page-flags.h:143 [inline] RIP [] PageMlocked include/linux/page-flags.h:327 [inline] RIP [] __split_huge_pmd+0x391/0x1870 mm/huge_memory.c:1773 RSP CR2: ffffeafff8fa0020 ---[ end trace 630af55aea3506f9 ]---