------------[ cut here ]------------ kernel BUG at mm/memory.c:2163! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 31907 Comm: syz-executor.1 Not tainted 6.3.0-rc7-syzkaller-00152-g2af3e53a4dc0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 RIP: 0010:vmf_insert_pfn_prot+0x42c/0x450 mm/memory.c:2163 Code: ff 89 de e8 c6 3c bf ff 45 84 e4 74 2b e8 2c 3a bf ff e9 54 fd ff ff e8 22 3a bf ff 0f 0b e8 1b 3a bf ff 0f 0b e8 14 3a bf ff <0f> 0b e8 0d 3e d3 08 e8 08 3a bf ff 0f 0b e8 01 3a bf ff 0f 0b 66 RSP: 0018:ffffc900060e7780 EFLAGS: 00010287 RAX: ffffffff81cb3f7c RBX: 0000000000000420 RCX: 0000000000040000 RDX: ffffc90003eb1000 RSI: 00000000000000a2 RDI: 00000000000000a3 RBP: ffffc900060e7840 R08: ffffffff81cb3c54 R09: ffffffff81cb3c28 R10: 0000000000000002 R11: ffff88807c43ba80 R12: 000000000c040471 R13: ffff8880847d0000 R14: ffffc900060e77c0 R15: 000000000001df57 FS: 00007f05eb941700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020506000 CR3: 0000000028711000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: drm_gem_shmem_fault+0x1dd/0x240 drivers/gpu/drm/drm_gem_shmem_helper.c:559 __do_fault+0x136/0x500 mm/memory.c:4155 do_read_fault mm/memory.c:4506 [inline] do_fault mm/memory.c:4635 [inline] handle_pte_fault mm/memory.c:4923 [inline] __handle_mm_fault mm/memory.c:5065 [inline] handle_mm_fault+0x3357/0x51c0 mm/memory.c:5211 do_user_addr_fault arch/x86/mm/fault.c:1407 [inline] handle_page_fault arch/x86/mm/fault.c:1498 [inline] exc_page_fault+0x5b1/0x7c0 arch/x86/mm/fault.c:1554 asm_exc_page_fault+0x26/0x30 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:ffffc900060e7cd0 EFLAGS: 00050202 RAX: ffffffff84304501 RBX: 00007fffffffeffc RCX: 0000000000000004 RDX: 0000000000000004 RSI: 00000000200003c0 RDI: ffffc900060e7d60 RBP: ffffc900060e7dd0 R08: dffffc0000000000 R09: 0000000000000003 R10: ffffffffffffffff R11: dffffc0000000001 R12: 0000000000000004 R13: ffff88803a7ff000 R14: ffffc900060e7d60 R15: 00000000200003c0 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+0xf7/0x170 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] j1939_sk_setsockopt+0x425/0xfa0 net/can/j1939/socket.c:727 __sys_setsockopt+0x545/0x980 net/socket.c:2271 __do_sys_setsockopt net/socket.c:2282 [inline] __se_sys_setsockopt net/socket.c:2279 [inline] __x64_sys_setsockopt+0xb5/0xd0 net/socket.c:2279 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f05eac8c169 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:00007f05eb941168 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f05eadabf80 RCX: 00007f05eac8c169 RDX: 0000000000000003 RSI: 000000000000006b RDI: 0000000000000004 RBP: 00007f05eace7ca1 R08: 0000000000000004 R09: 0000000000000000 R10: 00000000200003c0 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffe660b35f R14: 00007f05eb941300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:vmf_insert_pfn_prot+0x42c/0x450 mm/memory.c:2163 Code: ff 89 de e8 c6 3c bf ff 45 84 e4 74 2b e8 2c 3a bf ff e9 54 fd ff ff e8 22 3a bf ff 0f 0b e8 1b 3a bf ff 0f 0b e8 14 3a bf ff <0f> 0b e8 0d 3e d3 08 e8 08 3a bf ff 0f 0b e8 01 3a bf ff 0f 0b 66 RSP: 0018:ffffc900060e7780 EFLAGS: 00010287 RAX: ffffffff81cb3f7c RBX: 0000000000000420 RCX: 0000000000040000 RDX: ffffc90003eb1000 RSI: 00000000000000a2 RDI: 00000000000000a3 RBP: ffffc900060e7840 R08: ffffffff81cb3c54 R09: ffffffff81cb3c28 R10: 0000000000000002 R11: ffff88807c43ba80 R12: 000000000c040471 R13: ffff8880847d0000 R14: ffffc900060e77c0 R15: 000000000001df57 FS: 00007f05eb941700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c014f50f9c CR3: 0000000028711000 CR4: 00000000003506f0 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 retq 3d: 8d .byte 0x8d 3e: 14 .byte 0x14