security_file_ioctl+0xcb/0x2d0 security/security.c:2913
 __do_sys_ioctl fs/ioctl.c:901 [inline]
 __se_sys_ioctl+0x47/0x170 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
kernel BUG at mm/filemap.c:3442!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 11428 Comm: syz.6.1223 Not tainted 6.16.0-rc4-syzkaller-00049-gb4911fb0b060 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:filemap_fault+0x117d/0x1200 mm/filemap.c:3442
Code: 38 c1 0f 8c 8e fc ff ff 4c 89 e7 e8 8d 6b 29 00 e9 81 fc ff ff e8 a3 13 c8 ff 48 89 df 48 c7 c6 a0 30 94 8b e8 d4 ae 0d 00 90 <0f> 0b e8 8c 13 c8 ff 48 8b 3c 24 48 c7 c6 20 37 94 8b e8 bc ae 0d
RSP: 0018:ffffc9000dcf76e0 EFLAGS: 00010246
RAX: eed1b72d270b6500 RBX: ffffea0000c21a80 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8d96e815 RDI: 00000000ffffffff
RBP: ffffc9000dcf7818 R08: ffffffff8f9fdbf7 R09: 1ffffffff1f3fb7e
R10: dffffc0000000000 R11: fffffbfff1f3fb7f R12: dffffc0000000000
R13: 1ffffd4000184351 R14: ffffea0000c21a98 R15: ffffea0000c21a88
FS:  00007f3af2def6c0(0000) GS:ffff888125d84000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ea223914b0 CR3: 0000000027990000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __do_fault+0x135/0x390 mm/memory.c:5169
 do_shared_fault mm/memory.c:5654 [inline]
 do_fault mm/memory.c:5728 [inline]
 do_pte_missing mm/memory.c:4251 [inline]
 handle_pte_fault mm/memory.c:6069 [inline]
 __handle_mm_fault+0x198b/0x5620 mm/memory.c:6212
 handle_mm_fault+0x2d5/0x7f0 mm/memory.c:6381
 do_user_addr_fault+0x764/0x1390 arch/x86/mm/fault.c:1387
 handle_page_fault arch/x86/mm/fault.c:1476 [inline]
 exc_page_fault+0x76/0xf0 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:__put_user_4+0xd/0x20 arch/x86/lib/putuser.S:94
Code: 66 89 01 31 c9 0f 01 ca e9 00 3b 03 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 89 cb 48 c1 fb 3f 48 09 d9 0f 01 cb <89> 01 31 c9 0f 01 ca e9 d7 3a 03 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000dcf7c98 EFLAGS: 00050202
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00002000000016f8
RDX: 0000000000000000 RSI: ffffffff8db5a681 RDI: ffffffff8be1b940
RBP: ffffc9000dcf7eb0 R08: 0000000000000000 R09: ffffffff820a3bc0
R10: dffffc0000000000 R11: ffffed100f1527c1 R12: 00002000000016c0
R13: 0000000000040000 R14: 0000200000000480 R15: 0000000000000049
 __sys_sendmmsg+0x25f/0x430 net/socket.c:2714
 __do_sys_sendmmsg net/socket.c:2736 [inline]
 __se_sys_sendmmsg net/socket.c:2733 [inline]
 __x64_sys_sendmmsg+0xa0/0xc0 net/socket.c:2733
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3af1f8e929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3af2def038 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f3af21b6080 RCX: 00007f3af1f8e929
RDX: 00000000000002e9 RSI: 0000200000000480 RDI: 0000000000000005
RBP: 00007f3af2010b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f3af21b6080 R15: 00007ffe8c253dd8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:filemap_fault+0x117d/0x1200 mm/filemap.c:3442
Code: 38 c1 0f 8c 8e fc ff ff 4c 89 e7 e8 8d 6b 29 00 e9 81 fc ff ff e8 a3 13 c8 ff 48 89 df 48 c7 c6 a0 30 94 8b e8 d4 ae 0d 00 90 <0f> 0b e8 8c 13 c8 ff 48 8b 3c 24 48 c7 c6 20 37 94 8b e8 bc ae 0d
RSP: 0018:ffffc9000dcf76e0 EFLAGS: 00010246
RAX: eed1b72d270b6500 RBX: ffffea0000c21a80 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8d96e815 RDI: 00000000ffffffff
RBP: ffffc9000dcf7818 R08: ffffffff8f9fdbf7 R09: 1ffffffff1f3fb7e
R10: dffffc0000000000 R11: fffffbfff1f3fb7f R12: dffffc0000000000
R13: 1ffffd4000184351 R14: ffffea0000c21a98 R15: ffffea0000c21a88
FS:  00007f3af2def6c0(0000) GS:ffff888125d84000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fa12ff8 CR3: 0000000027990000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	66 89 01             	mov    %ax,(%rcx)
   3:	31 c9                	xor    %ecx,%ecx
   5:	0f 01 ca             	clac
   8:	e9 00 3b 03 00       	jmp    0x33b0d
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	48 89 cb             	mov    %rcx,%rbx
  20:	48 c1 fb 3f          	sar    $0x3f,%rbx
  24:	48 09 d9             	or     %rbx,%rcx
  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:	e9 d7 3a 03 00       	jmp    0x33b0d
  36:	90                   	nop
  37:	90                   	nop
  38:	90                   	nop
  39:	90                   	nop
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop