sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
   program syz-executor.6 not setting count and/or reply_len properly
------------[ cut here ]------------
WARNING: CPU: 1 PID: 12134 at lib/iov_iter.c:629 _copy_from_iter+0x2bf/0x1170
Modules linked in:
CPU: 1 PID: 12134 Comm: syz-executor.6 Not tainted 6.2.0-rc5-next-20230123 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:_copy_from_iter+0x2bf/0x1170
Code: 5d 41 5e 41 5f e9 35 4a 33 02 e8 7c c3 37 ff be 79 02 00 00 48 c7 c7 80 e4 9e 84 e8 5b 5f 5b ff e9 48 fe ff ff e8 61 c3 37 ff <0f> 0b 45 31 f6 eb 87 e8 55 c3 37 ff 31 ff 89 ee e8 1c bf 37 ff 40
RSP: 0018:ffff88802f897608 EFLAGS: 00010212
RAX: 00000000000009a3 RBX: 0000000000000000 RCX: ffffc9000982b000
RDX: 0000000000040000 RSI: ffffffff8211b5af RDI: 0000000000000001
RBP: 0000000000000390 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88802f897838
R13: ffffea00010aee00 R14: 0000000000000390 R15: ffff88802f897838
FS:  00007fa77fd29700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5bf0683004 CR3: 00000000411cc000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 copy_page_from_iter+0x251/0x430
 blk_rq_map_user_iov+0xb41/0x16c0
 blk_rq_map_user_io+0x1d1/0x200
 sg_common_write.constprop.0+0xd8d/0x15f0
 sg_write.part.0+0x698/0xa90
 sg_write+0x8d/0xe0
 vfs_write+0x2cf/0xdd0
 ksys_write+0x12b/0x260
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7fa7827b3b19
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:00007fa77fd29188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fa7828c6f60 RCX: 00007fa7827b3b19
RDX: 000000000000002b RSI: 0000000020000380 RDI: 0000000000000007
RBP: 00007fa78280df6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc840fbb4f R14: 00007fa77fd29300 R15: 0000000000022000
 </TASK>
irq event stamp: 3743
hardirqs last  enabled at (3755): [<ffffffff812e9bce>] vprintk_emit+0x50e/0x560
hardirqs last disabled at (3762): [<ffffffff812e9b65>] vprintk_emit+0x4a5/0x560
softirqs last  enabled at (2784): [<ffffffff8118303f>] irq_exit_rcu+0x11f/0x190
softirqs last disabled at (2635): [<ffffffff8118303f>] irq_exit_rcu+0x11f/0x190
---[ end trace 0000000000000000 ]---
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
   program syz-executor.6 not setting count and/or reply_len properly
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
   program syz-executor.6 not setting count and/or reply_len properly
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
   program syz-executor.0 not setting count and/or reply_len properly
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
   program syz-executor.1 not setting count and/or reply_len properly
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
   program syz-executor.5 not setting count and/or reply_len properly
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
   program syz-executor.0 not setting count and/or reply_len properly
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
   program syz-executor.6 not setting count and/or reply_len properly
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
   program syz-executor.1 not setting count and/or reply_len properly
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
   program syz-executor.5 not setting count and/or reply_len properly
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
syz-executor.0 (12266) used greatest stack depth: 23896 bytes left
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
netlink: 228 bytes leftover after parsing attributes in process `syz-executor.1'.
netlink: 228 bytes leftover after parsing attributes in process `syz-executor.1'.
netlink: 228 bytes leftover after parsing attributes in process `syz-executor.1'.
netlink: 228 bytes leftover after parsing attributes in process `syz-executor.1'.
memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=12549 'syz-executor.4'
capability: warning: `syz-executor.6' uses 32-bit capabilities (legacy support in use)