Call Trace:
 <TASK>
 dump_stack_lvl+0xc1/0xf0
------------[ cut here ]------------
 should_fail_ex+0x4b4/0x5b0
WARNING: CPU: 0 PID: 6233 at lib/iov_iter.c:364 _copy_from_iter+0x2b2/0x1140
Modules linked in:
 should_failslab+0x9/0x20

CPU: 0 PID: 6233 Comm: syz-executor.4 Not tainted 6.3.0-rc2-next-20230317 #1
 kmem_cache_alloc+0x5a/0x390
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
 __alloc_file+0x21/0x240
RIP: 0010:_copy_from_iter+0x2b2/0x1140
 alloc_empty_file+0x71/0x190
Code: 5d 41 5e 41 5f e9 52 f0 32 02 e8 09 66 36 ff be 70 01 00 00 48 c7 c7 c0 bd 9e 84 e8 68 53 5a ff e9 51 fe ff ff e8 ee 65 36 ff <0f> 0b 45 31 f6 eb 87 e8 e2 65 36 ff 31 ff 89 ee e8 19 61 36 ff 40
 alloc_file+0x5e/0x810
RSP: 0018:ffff8880158776b0 EFLAGS: 00010212
 alloc_file_pseudo+0x16e/0x260

RAX: 0000000000000895 RBX: 0000000000000000 RCX: ffffc900031ec000
RDX: 0000000000040000 RSI: ffffffff8214f712 RDI: 0000000000000001
 __shmem_file_setup+0x202/0x300
RBP: 0000000000001000 R08: 0000000000000001 R09: 0000000000000000
 __do_sys_memfd_create+0x32b/0x910
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: ffff8880158778e0 R14: 0000000000001000 R15: ffff8880158778e0
FS:  00007faa72929700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 do_syscall_64+0x3f/0x90
CR2: 0000000020000680 CR3: 000000001d134000 CR4: 0000000000350ef0
 entry_SYSCALL_64_after_hwframe+0x72/0xdc
Call Trace:
RIP: 0033:0x7f2f57856b19
 <TASK>
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2f54dcbf48 EFLAGS: 00000246
 ORIG_RAX: 000000000000013f
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f2f57856b19
RDX: 0000000000000800 RSI: 0000000000000000 RDI: 00007f2f578b00fb
RBP: 0000000000000001 R08: 0000000000000400 R09: ffffffffffffffff
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000008100000
R13: 0000000020000100 R14: 0000000000000800 R15: 0000000020000140
 copy_page_from_iter+0x251/0x430
 </TASK>
 blk_rq_map_user_iov+0xb41/0x16c0
 blk_rq_map_user_io+0x1d1/0x200
 sg_common_write.constprop.0+0xd8d/0x15f0
 sg_new_write.isra.0+0x523/0x770
 sg_ioctl+0x9f2/0x26a0
 __x64_sys_ioctl+0x19e/0x210
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7faa753b3b19
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007faa72929188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007faa754c6f60 RCX: 00007faa753b3b19
RDX: 0000000020000680 RSI: 0000000000002285 RDI: 0000000000000003
RBP: 00007faa7540df6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc9303e8bf R14: 00007faa72929300 R15: 0000000000022000
 </TASK>
irq event stamp: 1025
hardirqs last  enabled at (1037): [<ffffffff812f8eb8>] __up_console_sem+0x78/0x80
hardirqs last disabled at (1048): [<ffffffff812f8e9d>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (482): [<ffffffff8118d7bc>] __irq_exit_rcu+0xcc/0x110
softirqs last disabled at (469): [<ffffffff8118d7bc>] __irq_exit_rcu+0xcc/0x110
---[ end trace 0000000000000000 ]---
netlink: 40 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 40 bytes leftover after parsing attributes in process `syz-executor.5'.
loop6: detected capacity change from 0 to 4
EXT4-fs (loop6): Couldn't mount because of unsupported optional features (69540820)
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	ff c3                	inc    %ebx
   2:	66 2e 0f 1f 84 00 00 	nopw   %cs:0x0(%rax,%rax,1)
   9:	00 00 00
   c:	0f 1f 40 00          	nopl   0x0(%rax)
  10:	48 89 f8             	mov    %rdi,%rax
  13:	48 89 f7             	mov    %rsi,%rdi
  16:	48 89 d6             	mov    %rdx,%rsi
  19:	48 89 ca             	mov    %rcx,%rdx
  1c:	4d 89 c2             	mov    %r8,%r10
  1f:	4d 89 c8             	mov    %r9,%r8
  22:	4c 8b 4c 24 08       	mov    0x8(%rsp),%r9
  27:	0f 05                	syscall
* 29:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax <-- trapping instruction
  2f:	73 01                	jae    0x32
  31:	c3                   	retq
  32:	48 c7 c1 bc ff ff ff 	mov    $0xffffffffffffffbc,%rcx
  39:	f7 d8                	neg    %eax
  3b:	64 89 01             	mov    %eax,%fs:(%rcx)
  3e:	48                   	rex.W