------------[ cut here ]------------ kernel BUG at mm/memory.c:2230! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 5656 Comm: syz.4.720 Not tainted 6.1.102-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:vmf_insert_pfn_prot+0x2b3/0x2d0 mm/memory.c:2230 Code: 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 77 03 be ff b8 02 00 00 00 eb c4 e8 6b 03 be ff 0f 0b e8 64 03 be ff 0f 0b e8 5d 03 be ff <0f> 0b e8 06 42 d8 08 e8 51 03 be ff 0f 0b 66 2e 0f 1f 84 00 00 00 RSP: 0018:ffffc90005477580 EFLAGS: 00010283 RAX: ffffffff81cc9833 RBX: 0000000000000420 RCX: 0000000000040000 RDX: ffffc9000a2db000 RSI: 00000000000006de RDI: 00000000000006df RBP: ffffc90005477640 R08: ffffffff81cc967d R09: ffffffff81cc9651 R10: 0000000000000002 R11: ffff888021c33b80 R12: ffffc900054775c0 R13: ffff888028ef9a20 R14: 1ffff92000a8eeb4 R15: 000000000c040471 FS: 00007f1af15f16c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f418ff8 CR3: 0000000029ada000 CR4: 00000000003526e0 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:4261 do_read_fault mm/memory.c:4612 [inline] do_fault mm/memory.c:4741 [inline] handle_pte_fault mm/memory.c:5013 [inline] __handle_mm_fault mm/memory.c:5155 [inline] handle_mm_fault+0x3412/0x5340 mm/memory.c:5276 do_user_addr_fault arch/x86/mm/fault.c:1340 [inline] handle_page_fault arch/x86/mm/fault.c:1431 [inline] exc_page_fault+0x26f/0x620 arch/x86/mm/fault.c:1487 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0010:copy_user_short_string+0x22/0x40 arch/x86/lib/copy_user_64.S:242 Code: 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 89 d1 <8a> 06 88 07 48 ff c6 48 ff c7 ff c9 75 f2 31 c0 0f 01 ca c3 8d 14 RSP: 0018:ffffc90005477ab0 EFLAGS: 00050202 RAX: ffffffff8438ad01 RBX: 00007fffffffeffc RCX: 0000000000000004 RDX: 0000000000000004 RSI: 0000000020000040 RDI: ffffc90005477b70 RBP: ffffc90005477d80 R08: dffffc0000000000 R09: 0000000000000003 R10: ffffffffffffffff R11: dffffc0000000001 R12: 0000000000000004 R13: ffffc90005477b48 R14: ffffc90005477b70 R15: 0000000020000040 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] copy_from_sockptr_offset include/linux/sockptr.h:48 [inline] copy_from_sockptr include/linux/sockptr.h:55 [inline] do_ip_getsockopt+0x1f9/0x2570 net/ipv4/ip_sockglue.c:1565 ip_getsockopt+0xe9/0x2d0 net/ipv4/ip_sockglue.c:1809 __sys_getsockopt+0x2b2/0x5d0 net/socket.c:2327 __do_sys_getsockopt net/socket.c:2342 [inline] __se_sys_getsockopt net/socket.c:2339 [inline] __x64_sys_getsockopt+0xb1/0xc0 net/socket.c:2339 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f1af0777299 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1af15f1048 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007f1af0905f80 RCX: 00007f1af0777299 RDX: 0000000000000053 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f1af07e48e6 R08: 0000000020000040 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f1af0905f80 R15: 00007ffee18ba548 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:vmf_insert_pfn_prot+0x2b3/0x2d0 mm/memory.c:2230 Code: 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 77 03 be ff b8 02 00 00 00 eb c4 e8 6b 03 be ff 0f 0b e8 64 03 be ff 0f 0b e8 5d 03 be ff <0f> 0b e8 06 42 d8 08 e8 51 03 be ff 0f 0b 66 2e 0f 1f 84 00 00 00 RSP: 0018:ffffc90005477580 EFLAGS: 00010283 RAX: ffffffff81cc9833 RBX: 0000000000000420 RCX: 0000000000040000 RDX: ffffc9000a2db000 RSI: 00000000000006de RDI: 00000000000006df RBP: ffffc90005477640 R08: ffffffff81cc967d R09: ffffffff81cc9651 R10: 0000000000000002 R11: ffff888021c33b80 R12: ffffc900054775c0 R13: ffff888028ef9a20 R14: 1ffff92000a8eeb4 R15: 000000000c040471 FS: 00007f1af15f16c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555573bd5c8 CR3: 0000000029ada000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 7: 89 d1 mov %edx,%ecx 9: 83 e2 07 and $0x7,%edx c: c1 e9 03 shr $0x3,%ecx f: 74 12 je 0x23 11: 4c 8b 06 mov (%rsi),%r8 14: 4c 89 07 mov %r8,(%rdi) 17: 48 8d 76 08 lea 0x8(%rsi),%rsi 1b: 48 8d 7f 08 lea 0x8(%rdi),%rdi 1f: ff c9 dec %ecx 21: 75 ee jne 0x11 23: 21 d2 and %edx,%edx 25: 74 10 je 0x37 27: 89 d1 mov %edx,%ecx * 29: 8a 06 mov (%rsi),%al <-- trapping instruction 2b: 88 07 mov %al,(%rdi) 2d: 48 ff c6 inc %rsi 30: 48 ff c7 inc %rdi 33: ff c9 dec %ecx 35: 75 f2 jne 0x29 37: 31 c0 xor %eax,%eax 39: 0f 01 ca clac 3c: c3 ret 3d: 8d .byte 0x8d 3e: 14 .byte 0x14