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.0 not setting count and/or reply_len properly
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4429 at lib/iov_iter.c:623 _copy_from_iter+0x2b2/0x1140
Modules linked in:
CPU: 1 PID: 4429 Comm: syz-executor.0 Not tainted 6.3.0-rc2-next-20230315 #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 c2 0d 35 02 e8 89 11 35 ff be 73 02 00 00 48 c7 c7 40 e7 9e 84 e8 18 1b 59 ff e9 51 fe ff ff e8 6e 11 35 ff <0f> 0b 45 31 f6 eb 87 e8 62 11 35 ff 31 ff 89 ee e8 99 0c 35 ff 40
RSP: 0018:ffff888045627608 EFLAGS: 00010212
RAX: 0000000000005659 RBX: 0000000000000000 RCX: ffffc900007e7000
RDX: 0000000000040000 RSI: ffffffff82166ae2 RDI: 0000000000000001
RBP: 0000000000001000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: ffff888045627838 R14: 0000000000001000 R15: ffff888045627838
FS:  00007f10ef82b700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f003e08f4c0 CR3: 0000000008ec2000 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+0x2d8/0xdd0
 ksys_write+0x12b/0x260
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f10f22b5b19
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:00007f10ef82b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f10f23c8f60 RCX: 00007f10f22b5b19
RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000005
RBP: 00007f10f230ff6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff41e3c94f R14: 00007f10ef82b300 R15: 0000000000022000
 </TASK>
irq event stamp: 5513
hardirqs last  enabled at (5547): [<ffffffff8460144a>] asm_sysvec_apic_timer_interrupt+0x1a/0x20
hardirqs last disabled at (5588): [<ffffffff8449400f>] sysvec_apic_timer_interrupt+0xf/0x90
softirqs last  enabled at (3130): [<ffffffff8118ea6c>] __irq_exit_rcu+0xcc/0x110
softirqs last disabled at (2871): [<ffffffff8118ea6c>] __irq_exit_rcu+0xcc/0x110
---[ end trace 0000000000000000 ]---
audit: type=1400 audit(1678996399.167:10): avc:  denied  { read } for  pid=4427 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1
sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.0 not setting count and/or reply_len properly
syz-executor.5 uses obsolete (PF_INET,SOCK_PACKET)
syz-executor.3: attempt to access beyond end of device
loop3: rw=2049, sector=40, nr_sectors = 4 limit=40
Buffer I/O error on dev loop3, logical block 10, lost async page write
random: crng reseeded on system resumption
sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.0 not setting count and/or reply_len properly