------------[ cut here ]------------ kernel BUG at mm/memory.c:2220! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 4949 Comm: syz-executor.3 Not tainted 6.1.29-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 RIP: 0010:vmf_insert_pfn_prot+0x428/0x440 mm/memory.c:2220 Code: ff 89 de e8 ba ef be ff 45 84 e4 74 2b e8 50 ed be ff e9 54 fd ff ff e8 46 ed be ff 0f 0b e8 3f ed be ff 0f 0b e8 38 ed be ff <0f> 0b e8 21 21 b7 08 e8 2c ed be ff 0f 0b e8 25 ed be ff 0f 0b 0f RSP: 0018:ffffc9000a767720 EFLAGS: 00010287 RAX: ffffffff81cad798 RBX: 0000000000000420 RCX: 0000000000040000 RDX: ffffc9000c5ea000 RSI: 0000000000000471 RDI: 0000000000000472 RBP: ffffc9000a7677e0 R08: ffffffff81cad470 R09: ffffffff81cad444 R10: 0000000000000002 R11: ffff88808d9b0000 R12: 000000000c040474 R13: ffff888023290d80 R14: ffffc9000a767760 R15: 000000000001e958 FS: 00007fe4fd422700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007faa84f6f000 CR3: 000000002190d000 CR4: 00000000003506e0 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:4212 do_read_fault mm/memory.c:4563 [inline] do_fault mm/memory.c:4692 [inline] handle_pte_fault mm/memory.c:4964 [inline] __handle_mm_fault mm/memory.c:5106 [inline] handle_mm_fault+0x3407/0x5330 mm/memory.c:5227 do_user_addr_fault arch/x86/mm/fault.c:1428 [inline] handle_page_fault arch/x86/mm/fault.c:1519 [inline] exc_page_fault+0x58d/0x790 arch/x86/mm/fault.c:1575 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0010:copy_user_enhanced_fast_string+0xa/0x40 arch/x86/lib/copy_user_64.S:166 Code: ff c9 75 f2 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 8d 0c ca 89 ca eb 20 0f 01 cb 83 fa 40 72 38 89 d1 a4 31 c0 0f 01 ca c3 89 ca eb 0a 66 2e 0f 1f 84 00 00 00 00 00 RSP: 0018:ffffc9000a767c68 EFLAGS: 00050202 RAX: ffffffff8433fe01 RBX: 00007fffffffef80 RCX: 0000000000000080 RDX: 0000000000000080 RSI: 0000000020000000 RDI: ffffc9000a767d20 RBP: 0000000000000080 R08: dffffc0000000000 R09: fffff520014ecfb4 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000080 R13: dffffc0000000000 R14: ffffc9000a767d20 R15: 0000000020000000 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] move_addr_to_kernel+0x7e/0x140 net/socket.c:249 __sys_sendto+0x2b4/0x5f0 net/socket.c:2108 __do_sys_sendto net/socket.c:2129 [inline] __se_sys_sendto net/socket.c:2125 [inline] __x64_sys_sendto+0xda/0xf0 net/socket.c:2125 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: 0033:0x7fe4fc68c169 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe4fd422168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fe4fc7abf80 RCX: 00007fe4fc68c169 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007fe4fc6e7ca1 R08: 0000000020000000 R09: 0000000000000080 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe4edffcdf R14: 00007fe4fd422300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:vmf_insert_pfn_prot+0x428/0x440 mm/memory.c:2220 Code: ff 89 de e8 ba ef be ff 45 84 e4 74 2b e8 50 ed be ff e9 54 fd ff ff e8 46 ed be ff 0f 0b e8 3f ed be ff 0f 0b e8 38 ed be ff <0f> 0b e8 21 21 b7 08 e8 2c ed be ff 0f 0b e8 25 ed be ff 0f 0b 0f RSP: 0018:ffffc9000a767720 EFLAGS: 00010287 RAX: ffffffff81cad798 RBX: 0000000000000420 RCX: 0000000000040000 RDX: ffffc9000c5ea000 RSI: 0000000000000471 RDI: 0000000000000472 RBP: ffffc9000a7677e0 R08: ffffffff81cad470 R09: ffffffff81cad444 R10: 0000000000000002 R11: ffff88808d9b0000 R12: 000000000c040474 R13: ffff888023290d80 R14: ffffc9000a767760 R15: 000000000001e958 FS: 00007fe4fd422700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33821000 CR3: 000000002190d000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: ff c9 dec %ecx 2: 75 f2 jne 0xfffffff6 4: 89 d1 mov %edx,%ecx 6: c1 e9 03 shr $0x3,%ecx 9: 83 e2 07 and $0x7,%edx c: f3 48 a5 rep movsq %ds:(%rsi),%es:(%rdi) f: 89 d1 mov %edx,%ecx 11: f3 a4 rep movsb %ds:(%rsi),%es:(%rdi) 13: 31 c0 xor %eax,%eax 15: 0f 01 ca clac 18: c3 retq 19: 8d 0c ca lea (%rdx,%rcx,8),%ecx 1c: 89 ca mov %ecx,%edx 1e: eb 20 jmp 0x40 20: 0f 01 cb stac 23: 83 fa 40 cmp $0x40,%edx 26: 72 38 jb 0x60 28: 89 d1 mov %edx,%ecx * 2a: f3 a4 rep movsb %ds:(%rsi),%es:(%rdi) <-- trapping instruction 2c: 31 c0 xor %eax,%eax 2e: 0f 01 ca clac 31: c3 retq 32: 89 ca mov %ecx,%edx 34: eb 0a jmp 0x40 36: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1) 3d: 00 00 00