------------[ cut here ]------------
WARNING: CPU: 1 PID: 7587 at lib/iov_iter.c:385 _copy_from_iter+0x2f1/0x1320
Modules linked in:
CPU: 1 PID: 7587 Comm: syz-executor.7 Not tainted 6.4.0-rc5-next-20230605 #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 4a e8 35 ff be 85 01 00 00 48 c7 c7 c0 ec 9e 84 e8 79 43 5a ff e9 13 fe ff ff e8 2f e8 35 ff <0f> 0b 45 31 f6 e9 67 ff ff ff e8 20 e8 35 ff 31 ff 89 ee e8 57 e3
RSP: 0018:ffff8880460576b0 EFLAGS: 00010216
RAX: 00000000000001f7 RBX: 0000000000000000 RCX: ffffc9000782f000
RDX: 0000000000040000 RSI: ffffffff821623b1 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 000000000000000c
R13: ffffea0001103e00 R14: 000000000000000c R15: ffff8880460578e0
FS:  00007fc9c6e0c700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000180 CR3: 0000000043174000 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_new_write.isra.0+0x523/0x770
 sg_ioctl+0x9f2/0x26a0
 __x64_sys_ioctl+0x19e/0x210
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x6e/0xd8
RIP: 0033:0x7fc9c9896b19
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:00007fc9c6e0c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fc9c99a9f60 RCX: 00007fc9c9896b19
RDX: 0000000020000180 RSI: 0000000000002285 RDI: 0000000000000003
RBP: 00007fc9c98f0f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffda0bb674f R14: 00007fc9c6e0c300 R15: 0000000000022000
 </TASK>
irq event stamp: 987
hardirqs last  enabled at (997): [<ffffffff812fe828>] __up_console_sem+0x78/0x80
hardirqs last disabled at (1008): [<ffffffff812fe80d>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (746): [<ffffffff8118de53>] irq_exit_rcu+0x93/0xc0
softirqs last disabled at (741): [<ffffffff8118de53>] irq_exit_rcu+0x93/0xc0
---[ end trace 0000000000000000 ]---
syz-executor.2: attempt to access beyond end of device
loop2: rw=4096, sector=2, nr_sectors = 2 limit=0
EXT4-fs (loop2): unable to read superblock