------------[ cut here ]------------
kernel BUG at mm/memory.c:2163!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 15891 Comm: syz-executor.2 Not tainted 6.3.0-rc3-syzkaller-00394-g0ec57cfa721f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:vmf_insert_pfn_prot+0x24c/0x460 mm/memory.c:2163
Code: 0f 0b e8 c7 58 c2 ff 4d 89 f7 bf 20 00 00 00 41 83 e7 28 4c 89 fe e8 23 55 c2 ff 49 83 ff 20 0f 85 a5 fe ff ff e8 a4 58 c2 ff <0f> 0b 49 be ff ff ff ff ff ff 0f 00 e8 93 58 c2 ff 4d 21 ee 4c 89
RSP: 0018:ffffc9000345f6f0 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 1ffff9200068bee0 RCX: ffffc90005ce9000
RDX: 0000000000040000 RSI: ffffffff81c07fac RDI: 0000000000000007
RBP: ffff888029c40b60 R08: 0000000000000007 R09: 0000000000000020
R10: 0000000000000020 R11: 0000000000000003 R12: 00000000207ef000
R13: 000000000001cb3e R14: 000000000c040474 R15: 0000000000000020
FS:  00007f7aee51a700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000207ef000 CR3: 000000007d6a6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 drm_gem_shmem_fault+0x1e1/0x290 drivers/gpu/drm/drm_gem_shmem_helper.c:559
 __do_fault+0x107/0x600 mm/memory.c:4141
 do_read_fault mm/memory.c:4492 [inline]
 do_fault mm/memory.c:4621 [inline]
 handle_pte_fault mm/memory.c:4909 [inline]
 __handle_mm_fault+0x24f3/0x3e60 mm/memory.c:5051
 handle_mm_fault+0x2ba/0x9c0 mm/memory.c:5197
 do_user_addr_fault+0x475/0x1230 arch/x86/mm/fault.c:1407
 handle_page_fault arch/x86/mm/fault.c:1498 [inline]
 exc_page_fault+0x98/0x170 arch/x86/mm/fault.c:1554
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0010:fault_in_readable+0x179/0x290 mm/gup.c:1863
Code: 36 c5 ff 49 39 dd 0f 84 06 01 00 00 45 31 f6 eb 11 e8 2b 36 c5 ff 48 81 c3 00 10 00 00 4c 39 eb 74 1d e8 1a 36 c5 ff 45 89 f7 <8a> 03 31 ff 44 89 fe 88 44 24 28 e8 57 32 c5 ff 45 85 ff 74 d2 e8
RSP: 0018:ffffc9000345fb10 EFLAGS: 00050246
RAX: 0000000000040000 RBX: 00000000207ef000 RCX: ffffc90005ce9000
RDX: 0000000000040000 RSI: ffffffff81bda236 RDI: 0000000000000005
RBP: 00000000207ee3c0 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000001000
R13: 00000000207f0000 R14: 0000000000000000 R15: 0000000000000000
 fault_in_iov_iter_readable+0x252/0x2c0 lib/iov_iter.c:350
 generic_perform_write+0x1ae/0x570 mm/filemap.c:3916
 __generic_file_write_iter+0x2ae/0x500 mm/filemap.c:4054
 generic_file_write_iter+0xe3/0x350 mm/filemap.c:4086
 call_write_iter include/linux/fs.h:1851 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x9ed/0xe10 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: 0033:0x7f7aed88c0f9
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:00007f7aee51a168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f7aed9abf80 RCX: 00007f7aed88c0f9
RDX: 000000000208e24b RSI: 00000000200003c0 RDI: 0000000000000003
RBP: 00007f7aed8e7b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7aedacfb1f R14: 00007f7aee51a300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:vmf_insert_pfn_prot+0x24c/0x460 mm/memory.c:2163
Code: 0f 0b e8 c7 58 c2 ff 4d 89 f7 bf 20 00 00 00 41 83 e7 28 4c 89 fe e8 23 55 c2 ff 49 83 ff 20 0f 85 a5 fe ff ff e8 a4 58 c2 ff <0f> 0b 49 be ff ff ff ff ff ff 0f 00 e8 93 58 c2 ff 4d 21 ee 4c 89
RSP: 0018:ffffc9000345f6f0 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 1ffff9200068bee0 RCX: ffffc90005ce9000
RDX: 0000000000040000 RSI: ffffffff81c07fac RDI: 0000000000000007
RBP: ffff888029c40b60 R08: 0000000000000007 R09: 0000000000000020
R10: 0000000000000020 R11: 0000000000000003 R12: 00000000207ef000
R13: 000000000001cb3e R14: 000000000c040474 R15: 0000000000000020
FS:  00007f7aee51a700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32e24000 CR3: 000000007d6a6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	36 c5 ff 49          	ss (bad)
   4:	39 dd                	cmp    %ebx,%ebp
   6:	0f 84 06 01 00 00    	je     0x112
   c:	45 31 f6             	xor    %r14d,%r14d
   f:	eb 11                	jmp    0x22
  11:	e8 2b 36 c5 ff       	callq  0xffc53641
  16:	48 81 c3 00 10 00 00 	add    $0x1000,%rbx
  1d:	4c 39 eb             	cmp    %r13,%rbx
  20:	74 1d                	je     0x3f
  22:	e8 1a 36 c5 ff       	callq  0xffc53641
  27:	45 89 f7             	mov    %r14d,%r15d
* 2a:	8a 03                	mov    (%rbx),%al <-- trapping instruction
  2c:	31 ff                	xor    %edi,%edi
  2e:	44 89 fe             	mov    %r15d,%esi
  31:	88 44 24 28          	mov    %al,0x28(%rsp)
  35:	e8 57 32 c5 ff       	callq  0xffc53291
  3a:	45 85 ff             	test   %r15d,%r15d
  3d:	74 d2                	je     0x11
  3f:	e8                   	.byte 0xe8