BUG: unable to handle kernel paging request at ffffeafff9bc8000 IP: [] constant_test_bit arch/x86/include/asm/bitops.h:311 [inline] IP: [] PageHead include/linux/page-flags.h:473 [inline] IP: [] copy_huge_pmd+0x260/0x550 mm/huge_memory.c:854 PGD 0 [ 133.588641] Oops: 0000 [#1] PREEMPT SMP KASAN keychord: keycode 4096 out of range keychord: keycode 4096 out of range Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 11643 Comm: syz-executor7 Not tainted 4.9.122-g54068d6 #78 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801a1ea1800 task.stack: ffff8801ce018000 RIP: 0010:[] [] constant_test_bit arch/x86/include/asm/bitops.h:311 [inline] RIP: 0010:[] [] PageHead include/linux/page-flags.h:473 [inline] RIP: 0010:[] [] copy_huge_pmd+0x260/0x550 mm/huge_memory.c:854 RSP: 0018:ffff8801ce01f9e8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffffeafff9bc8000 RCX: ffffc90004740000 RDX: 1ffffd5fff379000 RSI: ffffffff8154af65 RDI: 00003ffe6f2001e0 RBP: ffff8801ce01fa40 R08: ffff8801a1ea2160 R09: 0000000000000001 R10: ffff8801a1ea1800 R11: 1ffff100343d4427 R12: ffff8801d8960540 R13: ffff8801bbfc7800 R14: 00003ffe6f2001e0 R15: ffff8801cd78f800 FS: 00007f99ccfbb700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffeafff9bc8000 CR3: 00000001d8746000 CR4: 00000000001606f0 Stack: 00003ffe6f2001e0 ffff8801be523840 ffff8801b98d9c60 ffffea0006fd9b00 00003fffffe00000 0000000020000000 ffff8801cd78f800 ffff8801cd78f800 00000001cd78f067 000000003fffffff dffffc0000000000 ffff8801ce01fc08 Call Trace: [] copy_pmd_range mm/memory.c:1003 [inline] [] copy_pud_range mm/memory.c:1035 [inline] [] copy_page_range+0x71e/0x19f0 mm/memory.c:1097 [] dup_mmap kernel/fork.c:674 [inline] [] dup_mm kernel/fork.c:1156 [inline] [] copy_mm kernel/fork.c:1210 [inline] [] copy_process.part.51+0x3d6b/0x6330 kernel/fork.c:1678 [] copy_process kernel/fork.c:1503 [inline] [] _do_fork+0x1b0/0xdd0 kernel/fork.c:1963 [] SYSC_clone kernel/fork.c:2075 [inline] [] SyS_clone+0x37/0x50 kernel/fork.c:2069 [] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282 [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Code: 00 ea ff ff 48 23 45 c8 48 c1 e8 06 48 8d 1c 10 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 80 3c 02 00 0f 85 4c 02 00 00 <48> 8b 03 f6 c4 40 0f 84 c7 01 00 00 e8 bf 5d e1 ff 48 8d 7b 20 RIP [] constant_test_bit arch/x86/include/asm/bitops.h:311 [inline] RIP [] PageHead include/linux/page-flags.h:473 [inline] RIP [] copy_huge_pmd+0x260/0x550 mm/huge_memory.c:854 RSP CR2: ffffeafff9bc8000 ---[ end trace b44b69f7c9980efd ]---