------------[ cut here ]------------
WARNING: CPU: 0 PID: 12734 at fs/udf/inode.c:2050 __udf_add_aext+0x550/0x6f0
Modules linked in:
CPU: 0 PID: 12734 Comm: syz-executor.1 Not tainted 6.3.0-rc4-syzkaller-00195-g5a57b48fdfcb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:__udf_add_aext+0x550/0x6f0 fs/udf/inode.c:2049
Code: 4c 89 e7 e8 92 67 e4 fe 49 8b 3c 24 4c 89 fe e8 96 f4 03 ff 31 c0 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 c0 b0 8e fe <0f> 0b e9 ed fb ff ff e8 b4 b0 8e fe 0f 0b e9 5c fc ff ff e8 a8 b0
RSP: 0018:ffffc900033fead8 EFLAGS: 00010283
RAX: ffffffff82fba1c0 RBX: 1ffff9200067fda5 RCX: 0000000000040000
RDX: ffffc9000c620000 RSI: 0000000000017f14 RDI: 0000000000017f15
RBP: 0000000000000000 R08: ffffffff82fb9da6 R09: ffffffff82fb9cd6
R10: 0000000000000002 R11: ffff88802c008000 R12: ffffc900033fed20
R13: 0000000000000004 R14: dffffc0000000000 R15: ffffc900033fed28
FS:  00007fa3adcdd700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200c3038 CR3: 00000000737fc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 udf_add_aext fs/udf/inode.c:2107 [inline]
 udf_insert_aext fs/udf/inode.c:2269 [inline]
 udf_update_extents fs/udf/inode.c:1189 [inline]
 inode_getblk fs/udf/inode.c:904 [inline]
 udf_map_block+0x3bce/0x4ff0 fs/udf/inode.c:450
 __udf_get_block+0x126/0x410 fs/udf/inode.c:464
 __block_write_begin_int+0x548/0x1a50 fs/buffer.c:2034
 udf_page_mkwrite+0x5ae/0x960 fs/udf/file.c:69
 do_page_mkwrite+0x1a1/0x600 mm/memory.c:2925
 wp_page_shared mm/memory.c:3274 [inline]
 do_wp_page+0x501/0x3620 mm/memory.c:3356
 handle_pte_fault mm/memory.c:4927 [inline]
 __handle_mm_fault mm/memory.c:5051 [inline]
 handle_mm_fault+0x23a0/0x51c0 mm/memory.c:5197
 do_user_addr_fault arch/x86/mm/fault.c:1407 [inline]
 handle_page_fault arch/x86/mm/fault.c:1498 [inline]
 exc_page_fault+0x5b1/0x7c0 arch/x86/mm/fault.c:1554
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0010:__put_user_nocheck_4+0xb/0x20 arch/x86/lib/putuser.S:105
Code: 0f 1e fa 48 bb fd ef ff ff ff 7f 00 00 48 39 d9 73 70 0f 01 cb 89 01 31 c9 0f 01 ca c3 66 90 f3 0f 1e fa f3 0f 1e fa 0f 01 cb <89> 01 31 c9 0f 01 ca c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3
RSP: 0018:ffffc900033ff918 EFLAGS: 00050246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000020005030
RDX: ffff88802c008000 RSI: 0000000000000000 RDI: 00000000ffffffff
RBP: ffffc900033ffa90 R08: ffffffff888a041b R09: fffff5200067fed5
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000020005000 R15: 0000000000000000
 ____sys_recvmsg+0x371/0x570 net/socket.c:2733
 ___sys_recvmsg net/socket.c:2762 [inline]
 do_recvmmsg+0x471/0xad0 net/socket.c:2856
 __sys_recvmmsg net/socket.c:2935 [inline]
 __do_sys_recvmmsg net/socket.c:2958 [inline]
 __se_sys_recvmmsg net/socket.c:2951 [inline]
 __x64_sys_recvmmsg+0x199/0x240 net/socket.c:2951
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa3b748c0f9
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:00007fa3adcdd168 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007fa3b75ac120 RCX: 00007fa3b748c0f9
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000006
RBP: 00007fa3b74e7b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff6c05571f R14: 00007fa3adcdd300 R15: 0000000000022000
 </TASK>
----------------
Code disassembly (best guess):
   0:	0f 1e fa             	nop    %edx
   3:	48 bb fd ef ff ff ff 	movabs $0x7fffffffeffd,%rbx
   a:	7f 00 00
   d:	48 39 d9             	cmp    %rbx,%rcx
  10:	73 70                	jae    0x82
  12:	0f 01 cb             	stac
  15:	89 01                	mov    %eax,(%rcx)
  17:	31 c9                	xor    %ecx,%ecx
  19:	0f 01 ca             	clac
  1c:	c3                   	retq
  1d:	66 90                	xchg   %ax,%ax
  1f:	f3 0f 1e fa          	endbr64
  23:	f3 0f 1e fa          	endbr64
  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:	c3                   	retq
  32:	66 2e 0f 1f 84 00 00 	nopw   %cs:0x0(%rax,%rax,1)
  39:	00 00 00
  3c:	0f 1f 00             	nopl   (%rax)
  3f:	f3                   	repz