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
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6435 at lib/iov_iter.c:385 _copy_from_iter+0x2f1/0x1320
Modules linked in:
CPU: 0 PID: 6435 Comm: syz-executor.7 Not tainted 6.4.0-rc4-next-20230602 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:_copy_from_iter+0x2f1/0x1320
Code: b2 ff ff 89 c3 e9 1f ff ff ff e8 7a e0 35 ff be 85 01 00 00 48 c7 c7 60 ea 9e 84 e8 59 3a 5a ff e9 13 fe ff ff e8 5f e0 35 ff <0f> 0b 45 31 f6 e9 67 ff ff ff e8 50 e0 35 ff 31 ff 89 ee e8 87 db
RSP: 0018:ffff888044d37608 EFLAGS: 00010212
RAX: 00000000000048ea RBX: 0000000000000000 RCX: ffffc900047ef000
RDX: 0000000000040000 RSI: ffffffff82162b21 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff818110d5 R12: 0000000000001000
R13: ffffea0001079400 R14: 0000000000001000 R15: ffff888044d37838
FS:  00007f29ad94d700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005633f74177c8 CR3: 0000000014692000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
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+0x2b8/0xd40
 ksys_write+0x12b/0x260
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x6e/0xd8
RIP: 0033:0x7f29b03d7b19
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:00007f29ad94d188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f29b04eaf60 RCX: 00007f29b03d7b19
RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000004
RBP: 00007f29b0431f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd4b95476f R14: 00007f29ad94d300 R15: 0000000000022000
 </TASK>
irq event stamp: 1409
hardirqs last  enabled at (1419): [<ffffffff812fe828>] __up_console_sem+0x78/0x80
hardirqs last disabled at (1432): [<ffffffff812fe80d>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (1448): [<ffffffff8118de53>] irq_exit_rcu+0x93/0xc0
softirqs last disabled at (1441): [<ffffffff8118de53>] irq_exit_rcu+0x93/0xc0
---[ end trace 0000000000000000 ]---
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=6435 comm=syz-executor.7
syz-executor.5: attempt to access beyond end of device
loop5: rw=0, sector=64, nr_sectors = 2 limit=0
isofs_fill_super: bread failed, dev=loop5, iso_blknum=16, block=32
syz-executor.5: attempt to access beyond end of device
loop5: rw=0, sector=64, nr_sectors = 2 limit=0
isofs_fill_super: bread failed, dev=loop5, iso_blknum=16, block=32
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=6435 comm=syz-executor.7
EXT4-fs (loop3): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
EXT4-fs error (device loop3): ext4_validate_block_bitmap:431: comm syz-executor.3: bg 0: block 2: invalid block bitmap
EXT4-fs (loop3): unmounting filesystem 00000000-0000-0000-0000-000000000000.
syz-executor.4: attempt to access beyond end of device
loop4: rw=2049, sector=40, nr_sectors = 4 limit=40
Buffer I/O error on dev loop4, logical block 10, lost async page write
sit0: left promiscuous mode
sit0: entered promiscuous mode
sit0: left promiscuous mode