------------[ cut here ]------------ kernel BUG at mm/memory.c:2202! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 4851 Comm: syz-executor.0 Not tainted 6.3.0-syzkaller-13091-g3c4aa4434377 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 RIP: 0010:vmf_insert_pfn_prot+0x24c/0x460 mm/memory.c:2202 Code: 0f 0b e8 57 6b c1 ff 4d 89 f7 bf 20 00 00 00 41 83 e7 28 4c 89 fe e8 83 67 c1 ff 49 83 ff 20 0f 85 a5 fe ff ff e8 34 6b c1 ff <0f> 0b 49 be ff ff ff ff ff ff 0f 00 e8 23 6b c1 ff 4d 21 ee 4c 89 RSP: 0018:ffffc900031ef700 EFLAGS: 00010246 RAX: 0000000000040000 RBX: 1ffff9200063dee2 RCX: ffffc90003e52000 RDX: 0000000000040000 RSI: ffffffff81c2f29c RDI: 0000000000000007 RBP: ffff88802a7d9900 R08: 0000000000000007 R09: 0000000000000020 R10: 0000000000000020 R11: 1ffffffff219986e R12: 0000000020ffd000 R13: 00000000000289dd R14: 000000000c140472 R15: 0000000000000020 FS: 00007f7434b5a700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020ffd000 CR3: 000000002ab01000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: drm_gem_shmem_fault+0x1e5/0x3a0 drivers/gpu/drm/drm_gem_shmem_helper.c:563 __do_fault+0x107/0x600 mm/memory.c:4176 do_read_fault mm/memory.c:4530 [inline] do_fault mm/memory.c:4659 [inline] do_pte_missing mm/memory.c:3647 [inline] handle_pte_fault mm/memory.c:4947 [inline] __handle_mm_fault+0x28bc/0x41c0 mm/memory.c:5089 handle_mm_fault+0x2af/0x9f0 mm/memory.c:5243 do_user_addr_fault+0x51a/0x1210 arch/x86/mm/fault.c:1440 handle_page_fault arch/x86/mm/fault.c:1534 [inline] exc_page_fault+0x98/0x170 arch/x86/mm/fault.c:1590 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0010:fault_in_readable+0x164/0x270 mm/gup.c:1863 Code: 47 e8 45 31 f6 e8 0c 4e c4 ff 48 39 eb 75 13 eb 2e e8 00 4e c4 ff 48 81 c3 00 10 00 00 48 39 eb 74 1d e8 ef 4d c4 ff 45 89 f7 <8a> 03 31 ff 44 89 fe 88 44 24 28 e8 fc 49 c4 ff 45 85 ff 74 d2 e8 RSP: 0018:ffffc900031efb10 EFLAGS: 00050246 RAX: 0000000000040000 RBX: 0000000020ffd000 RCX: ffffc90003e52000 RDX: 0000000000040000 RSI: ffffffff81c00fe1 RDI: 0000000000000005 RBP: 0000000020ffe000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000001000 R13: 0000000020ffc140 R14: 0000000000000000 R15: 0000000000000000 fault_in_iov_iter_readable+0x252/0x2c0 lib/iov_iter.c:362 generic_perform_write+0x1ae/0x570 mm/filemap.c:3913 __generic_file_write_iter+0x2ae/0x500 mm/filemap.c:4051 generic_file_write_iter+0xe3/0x350 mm/filemap.c:4083 call_write_iter include/linux/fs.h:1868 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0xa1d/0xe40 fs/read_write.c:584 ksys_write+0x12b/0x250 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f7433e8c169 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:00007f7434b5a168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f7433fabf80 RCX: 00007f7433e8c169 RDX: 000000000208e24b RSI: 0000000020000140 RDI: 0000000000000007 RBP: 00007f7433ee7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f74340cfb1f R14: 00007f7434b5a300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:vmf_insert_pfn_prot+0x24c/0x460 mm/memory.c:2202 Code: 0f 0b e8 57 6b c1 ff 4d 89 f7 bf 20 00 00 00 41 83 e7 28 4c 89 fe e8 83 67 c1 ff 49 83 ff 20 0f 85 a5 fe ff ff e8 34 6b c1 ff <0f> 0b 49 be ff ff ff ff ff ff 0f 00 e8 23 6b c1 ff 4d 21 ee 4c 89 RSP: 0018:ffffc900031ef700 EFLAGS: 00010246 RAX: 0000000000040000 RBX: 1ffff9200063dee2 RCX: ffffc90003e52000 RDX: 0000000000040000 RSI: ffffffff81c2f29c RDI: 0000000000000007 RBP: ffff88802a7d9900 R08: 0000000000000007 R09: 0000000000000020 R10: 0000000000000020 R11: 1ffffffff219986e R12: 0000000020ffd000 R13: 00000000000289dd R14: 000000000c140472 R15: 0000000000000020 FS: 00007f7434b5a700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020ffd000 CR3: 000000002ab01000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 45 31 f6 xor %r14d,%r14d 3: e8 0c 4e c4 ff callq 0xffc44e14 8: 48 39 eb cmp %rbp,%rbx b: 75 13 jne 0x20 d: eb 2e jmp 0x3d f: e8 00 4e c4 ff callq 0xffc44e14 14: 48 81 c3 00 10 00 00 add $0x1000,%rbx 1b: 48 39 eb cmp %rbp,%rbx 1e: 74 1d je 0x3d 20: e8 ef 4d c4 ff callq 0xffc44e14 25: 45 89 f7 mov %r14d,%r15d * 28: 8a 03 mov (%rbx),%al <-- trapping instruction 2a: 31 ff xor %edi,%edi 2c: 44 89 fe mov %r15d,%esi 2f: 88 44 24 28 mov %al,0x28(%rsp) 33: e8 fc 49 c4 ff callq 0xffc44a34 38: 45 85 ff test %r15d,%r15d 3b: 74 d2 je 0xf 3d: e8 .byte 0xe8