sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.5 not setting count and/or reply_len properly
------------[ cut here ]------------
WARNING: CPU: 1 PID: 6889 at lib/iov_iter.c:629 _copy_from_iter+0x2b2/0x1140
Modules linked in:
CPU: 1 PID: 6889 Comm: syz-executor.5 Not tainted 6.2.0-rc6-next-20230201 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:_copy_from_iter+0x2b2/0x1140
Code: 5d 41 5e 41 5f e9 52 a2 32 02 e8 f9 38 36 ff be 79 02 00 00 48 c7 c7 40 c5 9e 84 e8 68 f0 59 ff e9 51 fe ff ff e8 de 38 36 ff <0f> 0b 45 31 f6 eb 87 e8 d2 38 36 ff 31 ff 89 ee e8 39 34 36 ff 40
RSP: 0018:ffff88803c9ff608 EFLAGS: 00010212
RAX: 0000000000003f11 RBX: 0000000000000000 RCX: ffffc90002600000
RDX: 0000000000040000 RSI: ffffffff82152612 RDI: 0000000000000001
RBP: 0000000000001000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: ffff88803c9ff838 R14: 0000000000001000 R15: ffff88803c9ff838
FS:  00007f1e32170700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdab74eff8 CR3: 000000000ed7c000 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+0x698/0xac0
 sg_write+0x8d/0xe0
 vfs_write+0x2cf/0xdc0
 ksys_write+0x12b/0x260
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f1e34c3cb19
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:00007f1e32170188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1e34d500e0 RCX: 00007f1e34c3cb19
RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000004
RBP: 00007f1e34c96f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffce982e26f R14: 00007f1e32170300 R15: 0000000000022000
 </TASK>
irq event stamp: 877
hardirqs last  enabled at (889): [<ffffffff812f94e8>] __up_console_sem+0x78/0x80
hardirqs last disabled at (898): [<ffffffff812f94cd>] __up_console_sem+0x5d/0x80
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=6890 comm=syz-executor.5
softirqs last  enabled at (830): [<ffffffff8118cfdc>] __irq_exit_rcu+0xcc/0x110
softirqs last disabled at (819): [<ffffffff8118cfdc>] __irq_exit_rcu+0xcc/0x110
---[ end trace 0000000000000000 ]---
loop2: detected capacity change from 0 to 40
loop2: detected capacity change from 0 to 40
sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.5 not setting count and/or reply_len properly
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=6932 comm=syz-executor.5
sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.2 not setting count and/or reply_len properly
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=6942 comm=syz-executor.2
sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.7 not setting count and/or reply_len properly
sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.6 not setting count and/or reply_len properly
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=6946 comm=syz-executor.7
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=6948 comm=syz-executor.6
loop1: detected capacity change from 0 to 40
sg_write: data in/out 917468/251 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 917468/251 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.2 not setting count and/or reply_len properly
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=6955 comm=syz-executor.5
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=6958 comm=syz-executor.2
loop1: detected capacity change from 0 to 40
loop1: detected capacity change from 0 to 40
sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.5 not setting count and/or reply_len properly
loop3: detected capacity change from 0 to 40
sg_write: data in/out 917468/251 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 917468/251 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.2 not setting count and/or reply_len properly
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=6974 comm=syz-executor.6
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=6973 comm=syz-executor.2
loop1: detected capacity change from 0 to 40
loop3: detected capacity change from 0 to 40
loop2: detected capacity change from 0 to 40
loop2: detected capacity change from 0 to 40
loop0: detected capacity change from 0 to 40
loop3: detected capacity change from 0 to 40
loop1: detected capacity change from 0 to 40
loop0: detected capacity change from 0 to 40
loop2: detected capacity change from 0 to 40
loop0: detected capacity change from 0 to 40
loop2: detected capacity change from 0 to 264192
tmpfs: Unknown parameter 'fowner'
loop2: detected capacity change from 0 to 264192
tmpfs: Unknown parameter 'fowner'
loop2: detected capacity change from 0 to 264192
tmpfs: Unknown parameter 'fowner'
loop1: detected capacity change from 0 to 264192
tmpfs: Unknown parameter 'fowner'
tmpfs: Unknown parameter 'fowner'
tmpfs: Unknown parameter '.]sĀrefer:0'
tmpfs: Unknown parameter '.]sĀrefer:0'
tmpfs: Unknown parameter 'fowner'
tmpfs: Unknown parameter '.]sĀrefer:0'
tmpfs: Unknown parameter 'fowner'
tmpfs: Unknown parameter '.]sĀrefer:0'