------------[ cut here ]------------ kernel BUG at mm/memory.c:2220! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 29400 Comm: syz-executor.1 Not tainted 6.1.42-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 RIP: 0010:vmf_insert_pfn_prot+0x428/0x440 mm/memory.c:2220 Code: ff 89 de e8 6a b5 be ff 45 84 e4 74 2b e8 00 b3 be ff e9 54 fd ff ff e8 f6 b2 be ff 0f 0b e8 ef b2 be ff 0f 0b e8 e8 b2 be ff <0f> 0b e8 51 4d b9 08 e8 dc b2 be ff 0f 0b e8 d5 b2 be ff 0f 0b 0f RSP: 0018:ffffc900030af620 EFLAGS: 00010287 RAX: ffffffff81cb37c8 RBX: 0000000000000420 RCX: 0000000000040000 RDX: ffffc90003bd1000 RSI: 0000000000000a55 RDI: 0000000000000a56 RBP: ffffc900030af6e0 R08: ffffffff81cb34a0 R09: ffffffff81cb3474 R10: 0000000000000002 R11: ffff8880734d5940 R12: 000000000c040474 R13: ffff8880526355e8 R14: ffffc900030af660 R15: 000000000001e1bc FS: 00007feb4f4676c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcf35dc4d58 CR3: 000000008a57b000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: drm_gem_shmem_fault+0x1d9/0x230 drivers/gpu/drm/drm_gem_shmem_helper.c:562 __do_fault+0x136/0x4f0 mm/memory.c:4231 do_read_fault mm/memory.c:4582 [inline] do_fault mm/memory.c:4711 [inline] handle_pte_fault mm/memory.c:4983 [inline] __handle_mm_fault mm/memory.c:5125 [inline] handle_mm_fault+0x3407/0x5330 mm/memory.c:5246 do_user_addr_fault arch/x86/mm/fault.c:1380 [inline] handle_page_fault arch/x86/mm/fault.c:1471 [inline] exc_page_fault+0x26f/0x660 arch/x86/mm/fault.c:1527 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0010:copy_user_short_string+0xa/0x40 arch/x86/lib/copy_user_64.S:232 Code: 83 f8 12 74 0a 89 d1 f3 a4 89 c8 0f 01 ca c3 89 d0 0f 01 ca c3 01 ca eb e7 0f 1f 80 00 00 00 00 89 d1 83 e2 07 c1 e9 03 74 12 <4c> 8b 06 4c 89 07 48 8d 76 08 48 8d 7f 08 ff c9 75 ee 21 d2 74 10 RSP: 0018:ffffc900030afb50 EFLAGS: 00050202 RAX: ffffffff8434c101 RBX: 00007fffffffefe0 RCX: 0000000000000004 RDX: 0000000000000000 RSI: 0000000020000400 RDI: ffffc900030afc70 RBP: ffffc900030afee8 R08: dffffc0000000000 R09: fffff52000615f92 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000020 R13: ffff88807398a280 R14: ffffc900030afc70 R15: 0000000020000400 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline] raw_copy_from_user arch/x86/include/asm/uaccess_64.h:52 [inline] _copy_from_user+0xf3/0x170 lib/usercopy.c:23 copy_from_user include/linux/uaccess.h:161 [inline] kvm_vm_ioctl+0x689/0xb60 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4713 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7feb4e67cb29 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007feb4f4670c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007feb4e79bf80 RCX: 00007feb4e67cb29 RDX: 0000000020000400 RSI: 000000004020ae46 RDI: 0000000000000004 RBP: 00007feb4e6c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007feb4e79bf80 R15: 00007ffc1e5684b8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:vmf_insert_pfn_prot+0x428/0x440 mm/memory.c:2220 Code: ff 89 de e8 6a b5 be ff 45 84 e4 74 2b e8 00 b3 be ff e9 54 fd ff ff e8 f6 b2 be ff 0f 0b e8 ef b2 be ff 0f 0b e8 e8 b2 be ff <0f> 0b e8 51 4d b9 08 e8 dc b2 be ff 0f 0b e8 d5 b2 be ff 0f 0b 0f RSP: 0018:ffffc900030af620 EFLAGS: 00010287 RAX: ffffffff81cb37c8 RBX: 0000000000000420 RCX: 0000000000040000 RDX: ffffc90003bd1000 RSI: 0000000000000a55 RDI: 0000000000000a56 RBP: ffffc900030af6e0 R08: ffffffff81cb34a0 R09: ffffffff81cb3474 R10: 0000000000000002 R11: ffff8880734d5940 R12: 000000000c040474 R13: ffff8880526355e8 R14: ffffc900030af660 R15: 000000000001e1bc FS: 00007feb4f4676c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33023000 CR3: 000000008a57b000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 83 f8 12 cmp $0x12,%eax 3: 74 0a je 0xf 5: 89 d1 mov %edx,%ecx 7: f3 a4 rep movsb %ds:(%rsi),%es:(%rdi) 9: 89 c8 mov %ecx,%eax b: 0f 01 ca clac e: c3 ret f: 89 d0 mov %edx,%eax 11: 0f 01 ca clac 14: c3 ret 15: 01 ca add %ecx,%edx 17: eb e7 jmp 0x0 19: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 20: 89 d1 mov %edx,%ecx 22: 83 e2 07 and $0x7,%edx 25: c1 e9 03 shr $0x3,%ecx 28: 74 12 je 0x3c * 2a: 4c 8b 06 mov (%rsi),%r8 <-- trapping instruction 2d: 4c 89 07 mov %r8,(%rdi) 30: 48 8d 76 08 lea 0x8(%rsi),%rsi 34: 48 8d 7f 08 lea 0x8(%rdi),%rdi 38: ff c9 dec %ecx 3a: 75 ee jne 0x2a 3c: 21 d2 and %edx,%edx 3e: 74 10 je 0x50