[syzbot] [dri?] kernel BUG in vmf_insert_pfn_prot (2)

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit:    9e6c269de404 Merge tag 'i2c-for-6.5-rc7' of git://git.kern..
git tree:       upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=110b32d3a80000
kernel config:  https://syzkaller.appspot.com/x/.config?x=aa796b6080b04102
dashboard link: https://syzkaller.appspot.com/bug?extid=398e17b61dab22cc56bc
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14284307a80000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/481d8421bfb2/disk-9e6c269d.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/5ec626f94634/vmlinux-9e6c269d.xz
kernel image: https://storage.googleapis.com/syzbot-assets/ab1e59619bd6/bzImage-9e6c269d.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+398e17b61dab22cc56bc@xxxxxxxxxxxxxxxxxxxxxxxxx

------------[ cut here ]------------
kernel BUG at mm/memory.c:2214!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 5157 Comm: syz-executor.3 Not tainted 6.5.0-rc6-syzkaller-00253-g9e6c269de404 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:vmf_insert_pfn_prot+0x247/0x430 mm/memory.c:2214
Code: 0f 0b e8 0c 4f c0 ff 49 89 ef bf 20 00 00 00 41 83 e7 28 4c 89 fe e8 88 4a c0 ff 49 83 ff 20 0f 85 aa fe ff ff e8 e9 4e c0 ff <0f> 0b 48 bd ff ff ff ff ff ff 0f 00 e8 d8 4e c0 ff 4c 89 f6 48 89
RSP: 0018:ffffc9000415f750 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8880275a0d00 RCX: 0000000000000000
RDX: ffff888018379dc0 RSI: ffffffff81c5b9b7 RDI: 0000000000000007
RBP: 000000000c140477 R08: 0000000000000007 R09: 0000000000000020
R10: 0000000000000020 R11: 000000000000001f R12: 0000000020ffc000
R13: 1ffff9200082beeb R14: 000000000007e79e R15: 0000000000000020
FS:  00007f235bd9a6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020ffc000 CR3: 0000000022a32000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 drm_gem_shmem_fault+0x1ea/0x3a0 drivers/gpu/drm/drm_gem_shmem_helper.c:563
 __do_fault+0x107/0x5f0 mm/memory.c:4198
 do_read_fault mm/memory.c:4547 [inline]
 do_fault mm/memory.c:4670 [inline]
 do_pte_missing mm/memory.c:3664 [inline]
 handle_pte_fault mm/memory.c:4939 [inline]
 __handle_mm_fault+0x27e0/0x3b80 mm/memory.c:5079
 handle_mm_fault+0x2ab/0x9d0 mm/memory.c:5233
 do_user_addr_fault+0x446/0xfc0 arch/x86/mm/fault.c:1392
 handle_page_fault arch/x86/mm/fault.c:1486 [inline]
 exc_page_fault+0x5c/0xd0 arch/x86/mm/fault.c:1542
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0010:rep_movs_alternative+0x4a/0xb0 arch/x86/lib/copy_user_64.S:71
Code: 75 f1 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 8b 06 48 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 df 83 f9 08 73 e8 eb c9 <f3> a4 c3 0f 1f 00 4c 8b 06 4c 8b 4e 08 4c 8b 56 10 4c 8b 5e 18 4c
RSP: 0018:ffffc9000415fb50 EFLAGS: 00050206
RAX: 0000000000000001 RBX: 0000000020ffc000 RCX: 0000000000001000
RDX: 0000000000000000 RSI: 0000000020ffc000 RDI: ffff88807b764000
RBP: 0000000000001000 R08: 0000000000000001 R09: ffffed100f6ec9ff
R10: ffff88807b764fff R11: 0000000000000000 R12: 0000000020ffd000
R13: ffff88807b764000 R14: 0000000000000000 R15: 0000000020ffc000
 copy_user_generic arch/x86/include/asm/uaccess_64.h:112 [inline]
 raw_copy_from_user arch/x86/include/asm/uaccess_64.h:127 [inline]
 _copy_from_user+0xc2/0xf0 lib/usercopy.c:23
 copy_from_user include/linux/uaccess.h:183 [inline]
 snd_rawmidi_kernel_write1+0x360/0x860 sound/core/rawmidi.c:1618
 snd_rawmidi_write+0x278/0xc10 sound/core/rawmidi.c:1687
 vfs_write+0x2a4/0xe40 fs/read_write.c:582
 ksys_write+0x1f0/0x250 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f235b07cae9
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:00007f235bd9a0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f235b19bf80 RCX: 00007f235b07cae9
RDX: 00000000fffffd2c RSI: 0000000020000000 RDI: 0000000000000005
RBP: 00007f235b0c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f235b19bf80 R15: 00007ffd9cdf0fe8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:vmf_insert_pfn_prot+0x247/0x430 mm/memory.c:2214
Code: 0f 0b e8 0c 4f c0 ff 49 89 ef bf 20 00 00 00 41 83 e7 28 4c 89 fe e8 88 4a c0 ff 49 83 ff 20 0f 85 aa fe ff ff e8 e9 4e c0 ff <0f> 0b 48 bd ff ff ff ff ff ff 0f 00 e8 d8 4e c0 ff 4c 89 f6 48 89
RSP: 0018:ffffc9000415f750 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8880275a0d00 RCX: 0000000000000000
RDX: ffff888018379dc0 RSI: ffffffff81c5b9b7 RDI: 0000000000000007
RBP: 000000000c140477 R08: 0000000000000007 R09: 0000000000000020
R10: 0000000000000020 R11: 000000000000001f R12: 0000000020ffc000
R13: 1ffff9200082beeb R14: 000000000007e79e R15: 0000000000000020
FS:  00007f235bd9a6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f93c20ffac1 CR3: 0000000022a32000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	75 f1                	jne    0xfffffff3
   2:	c3                   	ret
   3:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   a:	00 00 00 00
   e:	66 90                	xchg   %ax,%ax
  10:	48 8b 06             	mov    (%rsi),%rax
  13:	48 89 07             	mov    %rax,(%rdi)
  16:	48 83 c6 08          	add    $0x8,%rsi
  1a:	48 83 c7 08          	add    $0x8,%rdi
  1e:	83 e9 08             	sub    $0x8,%ecx
  21:	74 df                	je     0x2
  23:	83 f9 08             	cmp    $0x8,%ecx
  26:	73 e8                	jae    0x10
  28:	eb c9                	jmp    0xfffffff3
* 2a:	f3 a4                	rep movsb %ds:(%rsi),%es:(%rdi) <-- trapping instruction
  2c:	c3                   	ret
  2d:	0f 1f 00             	nopl   (%rax)
  30:	4c 8b 06             	mov    (%rsi),%r8
  33:	4c 8b 4e 08          	mov    0x8(%rsi),%r9
  37:	4c 8b 56 10          	mov    0x10(%rsi),%r10
  3b:	4c 8b 5e 18          	mov    0x18(%rsi),%r11
  3f:	4c                   	rex.WR


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