WARNING: CPU: 0 PID: 21052 at drivers/gpu/drm/drm_gem_shmem_helper.c:562 drm_gem_shmem_vm_open+0x96/0xb0 drivers/gpu/drm/drm_gem_shmem_helper.c:562
Modules linked in:
CPU: 0 PID: 21052 Comm: syz-executor.0 Not tainted 5.15.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:drm_gem_shmem_vm_open+0x96/0xb0 drivers/gpu/drm/drm_gem_shmem_helper.c:562
Code: 89 c6 e8 cd ab 20 fd 85 db 75 1a e8 84 a4 20 fd 48 89 ef 5b 5d 41 5c e9 c8 66 f5 ff e8 73 a4 20 fd 0f 0b eb ca e8 6a a4 20 fd <0f> 0b eb dd e8 c1 f9 67 fd eb 89 e8 ba f9 67 fd eb a8 0f 1f 84 00
RSP: 0018:ffffc90006747b78 EFLAGS: 00010216
RAX: 00000000000034d8 RBX: 00000000fffffffc RCX: ffffc90002e61000
RDX: 0000000000040000 RSI: ffffffff84555a16 RDI: 0000000000000003
RBP: ffff88807cdbdd68 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff845559f3 R11: 0000000000000000 R12: ffff88801b1b1800
R13: ffff88807cdbdc60 R14: 000000002017c000 R15: ffff88807cdbddf8
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0063) knlGS:00000000f451eb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000019fc7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __split_vma+0x23c/0x550 mm/mmap.c:2737
 __do_munmap+0x32a/0x11c0 mm/mmap.c:2841
 do_munmap mm/mmap.c:2895 [inline]
 munmap_vma_range mm/mmap.c:603 [inline]
 mmap_region+0x2fd/0x1650 mm/mmap.c:1742
 do_mmap+0x869/0xfb0 mm/mmap.c:1575
 vm_mmap_pgoff+0x1b7/0x290 mm/util.c:519
 ksys_mmap_pgoff+0x49f/0x620 mm/mmap.c:1624
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf6f24549
Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f451e59c EFLAGS: 00000246 ORIG_RAX: 00000000000000c0
RAX: ffffffffffffffda RBX: 000000002017c000 RCX: 0000000000004940
RDX: 0000000000000003 RSI: 0000000000008011 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
----------------
Code disassembly (best guess):
   0:	03 74 c0 01          	add    0x1(%rax,%rax,8),%esi
   4:	10 05 03 74 b8 01    	adc    %al,0x1b87403(%rip)        # 0x1b8740d
   a:	10 06                	adc    %al,(%rsi)
   c:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
  10:	10 07                	adc    %al,(%rdi)
  12:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
  16:	10 08                	adc    %cl,(%rax)
  18:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1c:	00 00                	add    %al,(%rax)
  1e:	00 00                	add    %al,(%rax)
  20:	00 51 52             	add    %dl,0x52(%rcx)
  23:	55                   	push   %rbp
  24:	89 e5                	mov    %esp,%ebp
  26:	0f 34                	sysenter
  28:	cd 80                	int    $0x80
* 2a:	5d                   	pop    %rbp <-- trapping instruction
  2b:	5a                   	pop    %rdx
  2c:	59                   	pop    %rcx
  2d:	c3                   	retq
  2e:	90                   	nop
  2f:	90                   	nop
  30:	90                   	nop
  31:	90                   	nop
  32:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  39:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi