------------[ cut here ]------------
WARNING: CPU: 1 PID: 5649 at lib/iov_iter.c:644 _copy_from_iter+0x2f1/0x1330
Modules linked in:
CPU: 1 PID: 5649 Comm: syz-executor.1 Not tainted 6.3.0-next-20230425 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:_copy_from_iter+0x2f1/0x1330
Code: 36 ff 44 89 f3 e9 2f ff ff ff e8 4a 20 36 ff be 88 02 00 00 48 c7 c7 c0 da 9e 84 e8 59 16 5a ff e9 13 fe ff ff e8 2f 20 36 ff <0f> 0b 45 31 f6 e9 77 ff ff ff e8 20 20 36 ff 31 ff 89 ee e8 57 1b
RSP: 0018:ffff88803edc7608 EFLAGS: 00010212
RAX: 000000000000119c RBX: 0000000000000000 RCX: ffffc9000cc37000
RDX: 0000000000040000 RSI: ffffffff8215dd81 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000653
R13: ffffea000069a400 R14: 0000000000000653 R15: ffff88803edc7838
FS:  00007f66d4a76700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe748b3cf64 CR3: 000000003653a000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 copy_page_from_iter+0xe3/0x180
 blk_rq_map_user_iov+0xb39/0x16c0
 blk_rq_map_user_io+0x1d1/0x200
 sg_common_write.constprop.0+0xd8d/0x15f0
 sg_write.part.0+0x698/0xac0
 sg_write+0x8d/0xe0
 vfs_write+0x2d8/0xdd0
 ksys_write+0x12b/0x260
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f66d7500b19
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:00007f66d4a76188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f66d7613f60 RCX: 00007f66d7500b19
RDX: 0000000000000681 RSI: 0000000020000540 RDI: 0000000000000003
RBP: 00007f66d755af6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff66fae8df R14: 00007f66d4a76300 R15: 0000000000022000
 </TASK>
irq event stamp: 1537
hardirqs last  enabled at (1553): [<ffffffff812fea18>] __up_console_sem+0x78/0x80
hardirqs last disabled at (1572): [<ffffffff812fe9fd>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (776): [<ffffffff8118e59c>] __irq_exit_rcu+0xcc/0x110
softirqs last disabled at (771): [<ffffffff8118e59c>] __irq_exit_rcu+0xcc/0x110
---[ end trace 0000000000000000 ]---
sg_write: data in/out 119/1619 bytes for SCSI command 0x41-- guessing data in;
   program syz-executor.1 not setting count and/or reply_len properly