------------[ cut here ]------------ kernel BUG at mm/memory.c:2230! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 3730 Comm: syz-executor.4 Not tainted 6.1.73-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:vmf_insert_pfn_prot+0x428/0x440 mm/memory.c:2230 Code: ff 89 de e8 aa 28 be ff 45 84 e4 74 2b e8 40 26 be ff e9 54 fd ff ff e8 36 26 be ff 0f 0b e8 2f 26 be ff 0f 0b e8 28 26 be ff <0f> 0b e8 61 2b be 08 e8 1c 26 be ff 0f 0b e8 15 26 be ff 0f 0b 0f RSP: 0018:ffffc90004b67160 EFLAGS: 00010287 RAX: ffffffff81cc4c98 RBX: 0000000000000420 RCX: 0000000000040000 RDX: ffffc9000b81c000 RSI: 0000000000001376 RDI: 0000000000001377 RBP: ffffc90004b67220 R08: ffffffff81cc4970 R09: ffffffff81cc4944 R10: 0000000000000002 R11: ffff88802769bb80 R12: 000000000c140473 R13: ffff888019324948 R14: ffffc90004b671a0 R15: 000000000001e6d4 FS: 00007f45ca8236c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb63a9c4d58 CR3: 000000007afb1000 CR4: 00000000003506f0 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:4241 do_cow_fault mm/memory.c:4622 [inline] do_fault mm/memory.c:4723 [inline] handle_pte_fault mm/memory.c:4993 [inline] __handle_mm_fault mm/memory.c:5135 [inline] handle_mm_fault+0x2fbe/0x5340 mm/memory.c:5256 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:__put_user_nocheck_4+0x3/0x11 Code: 00 00 48 39 d9 73 54 0f 01 cb 66 89 01 31 c9 0f 01 ca c3 0f 1f 44 00 00 48 bb fd ef ff ff ff 7f 00 00 48 39 d9 73 34 0f 01 cb <89> 01 31 c9 0f 01 ca c3 66 0f 1f 44 00 00 48 bb f9 ef ff ff ff 7f RSP: 0018:ffffc90004b67688 EFLAGS: 00050293 RAX: 0000000000000000 RBX: 00007fffffffeffd RCX: 0000000020000180 RDX: 0000000000000001 RSI: ffffffff8aebf7c0 RDI: ffffffff8b3cfa80 RBP: ffff88807ef41238 R08: dffffc0000000000 R09: fffffbfff1ce6996 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 1ffff9200096cedc R14: ffff88807ef41080 R15: 0000000020000180 sctp_ioctl+0x12c/0x1a0 net/sctp/socket.c:4924 inet_ioctl+0x245/0x400 net/ipv4/af_inet.c:1007 sock_do_ioctl+0x152/0x450 net/socket.c:1204 sock_ioctl+0x47f/0x770 net/socket.c:1321 vfs_ioctl fs/ioctl.c:51 [inline] do_vfs_ioctl+0xc26/0x2a90 fs/ioctl.c:830 __do_sys_ioctl fs/ioctl.c:868 [inline] __se_sys_ioctl+0x81/0x160 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f45c9a7cda9 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:00007f45ca8230c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f45c9babf80 RCX: 00007f45c9a7cda9 RDX: 0000000020000180 RSI: 000000000000541b RDI: 0000000000000004 RBP: 00007f45c9ac947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f45c9babf80 R15: 00007fffedd15588 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:vmf_insert_pfn_prot+0x428/0x440 mm/memory.c:2230 Code: ff 89 de e8 aa 28 be ff 45 84 e4 74 2b e8 40 26 be ff e9 54 fd ff ff e8 36 26 be ff 0f 0b e8 2f 26 be ff 0f 0b e8 28 26 be ff <0f> 0b e8 61 2b be 08 e8 1c 26 be ff 0f 0b e8 15 26 be ff 0f 0b 0f RSP: 0018:ffffc90004b67160 EFLAGS: 00010287 RAX: ffffffff81cc4c98 RBX: 0000000000000420 RCX: 0000000000040000 RDX: ffffc9000b81c000 RSI: 0000000000001376 RDI: 0000000000001377 RBP: ffffc90004b67220 R08: ffffffff81cc4970 R09: ffffffff81cc4944 R10: 0000000000000002 R11: ffff88802769bb80 R12: 000000000c140473 R13: ffff888019324948 R14: ffffc90004b671a0 R15: 000000000001e6d4 FS: 00007f45ca8236c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000140 CR3: 000000007afb1000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 48 39 d9 cmp %rbx,%rcx 5: 73 54 jae 0x5b 7: 0f 01 cb stac a: 66 89 01 mov %ax,(%rcx) d: 31 c9 xor %ecx,%ecx f: 0f 01 ca clac 12: c3 ret 13: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 18: 48 bb fd ef ff ff ff movabs $0x7fffffffeffd,%rbx 1f: 7f 00 00 22: 48 39 d9 cmp %rbx,%rcx 25: 73 34 jae 0x5b 27: 0f 01 cb stac * 2a: 89 01 mov %eax,(%rcx) <-- trapping instruction 2c: 31 c9 xor %ecx,%ecx 2e: 0f 01 ca clac 31: c3 ret 32: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) 38: 48 rex.W 39: bb f9 ef ff ff mov $0xffffeff9,%ebx 3e: ff (bad) 3f: 7f .byte 0x7f