sg_write: data in/out 524252/251 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.6 not setting count and/or reply_len properly
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5547 at lib/iov_iter.c:629 _copy_from_iter+0x2f1/0x1130
Modules linked in:
CPU: 1 PID: 5547 Comm: syz-executor.6 Not tainted 6.1.0-rc7-next-20221129 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:_copy_from_iter+0x2f1/0x1130
Code: 37 ff 44 89 f3 e9 2f ff ff ff e8 4a 71 37 ff be 79 02 00 00 48 c7 c7 80 b5 9e 84 e8 79 e0 5a ff e9 13 fe ff ff e8 2f 71 37 ff <0f> 0b 45 31 f6 e9 77 ff ff ff e8 20 71 37 ff 31 ff 89 ee e8 e7 6c
RSP: 0018:ffff888033f075e8 EFLAGS: 00010216
RAX: 0000000000002d0d RBX: 0000000000000000 RCX: ffffc90006df6000
RDX: 0000000000040000 RSI: ffffffff8211a7c1 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000001000
R13: ffffea0001165c00 R14: 0000000000001000 R15: ffff888033f07818
FS:  00007fc11a6fa700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2c23e000 CR3: 000000001aac4000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 copy_page_from_iter+0xe3/0x180
 blk_rq_map_user_iov+0xb0c/0x1650
 blk_rq_map_user_io+0x1ee/0x220
 sg_common_write.constprop.0+0xd84/0x15e0
 sg_write.part.0+0x706/0xb20
 sg_write+0x88/0xe0
 vfs_write+0x358/0xe40
 ksys_write+0x12b/0x260
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7fc11d1c6b19
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:00007fc11a6fa188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc11d2da0e0 RCX: 00007fc11d1c6b19
RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000005
RBP: 00007fc11d220f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffff7bac21f R14: 00007fc11a6fa300 R15: 0000000000022000
 </TASK>
irq event stamp: 2221
hardirqs last  enabled at (2231): [<ffffffff812e1068>] __up_console_sem+0x78/0x80
hardirqs last disabled at (2242): [<ffffffff812e104d>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (2134): [<ffffffff8118333b>] __irq_exit_rcu+0x11b/0x180
softirqs last disabled at (2123): [<ffffffff8118333b>] __irq_exit_rcu+0x11b/0x180
---[ end trace 0000000000000000 ]---
sg_write: data in/out 524252/251 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.5 not setting count and/or reply_len properly
loop4: detected capacity change from 0 to 264192
loop4: detected capacity change from 0 to 264192
loop4: detected capacity change from 0 to 264192
sg_write: data in/out 524252/251 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.5 not setting count and/or reply_len properly
sg_write: data in/out 524252/251 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.6 not setting count and/or reply_len properly
sg_write: data in/out 524252/251 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.5 not setting count and/or reply_len properly
sg_write: data in/out 524252/251 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.6 not setting count and/or reply_len properly
loop4: detected capacity change from 0 to 264192
Bluetooth: hci7: command 0x0406 tx timeout
Bluetooth: hci5: command 0x0406 tx timeout
Bluetooth: hci1: command 0x0406 tx timeout
Bluetooth: hci2: command 0x0406 tx timeout
Bluetooth: hci4: command 0x0406 tx timeout
Bluetooth: hci6: command 0x0406 tx timeout
loop4: detected capacity change from 0 to 264192
I/O error, dev loop4, sector 264064 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
device lo entered promiscuous mode
device lo left promiscuous mode
device lo entered promiscuous mode
random: crng reseeded on system resumption
device lo left promiscuous mode
syz_tun: refused to change device tx_queue_len
device lo entered promiscuous mode
syz_tun: refused to change device tx_queue_len
device lo left promiscuous mode
device lo entered promiscuous mode
random: crng reseeded on system resumption
syz_tun: refused to change device tx_queue_len
random: crng reseeded on system resumption
syz_tun: refused to change device tx_queue_len
random: crng reseeded on system resumption
syz_tun: refused to change device tx_queue_len