RBP: 00007f8fb35cb1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffff45c9a9f R14: 00007f8fb35cb300 R15: 0000000000022000
 </TASK>
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5835 at lib/iov_iter.c:364 _copy_from_iter+0x2b2/0x1140
Modules linked in:
CPU: 0 PID: 5835 Comm: syz-executor.1 Not tainted 6.3.0-rc3-next-20230320 #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 42 02 33 02 e8 49 70 36 ff be 70 01 00 00 48 c7 c7 c0 c1 9e 84 e8 58 5f 5a ff e9 51 fe ff ff e8 2e 70 36 ff <0f> 0b 45 31 f6 eb 87 e8 22 70 36 ff 31 ff 89 ee e8 59 6b 36 ff 40
RSP: 0018:ffff888043ab7608 EFLAGS: 00010216
RAX: 00000000000048d5 RBX: 0000000000000000 RCX: ffffc900037f9000
RDX: 0000000000040000 RSI: ffffffff8214f3a2 RDI: 0000000000000001
RBP: 0000000000001000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: ffff888043ab7838 R14: 0000000000001000 R15: ffff888043ab7838
FS:  00007f0d1fcb3700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2c322000 CR3: 0000000018158000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
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: 0033:0x7f0d2273db19
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:00007f0d1fcb3188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0d22850f60 RCX: 00007f0d2273db19
RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000005
RBP: 00007f0d22797f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffebf9c5a5f R14: 00007f0d1fcb3300 R15: 0000000000022000
 </TASK>
irq event stamp: 9173
hardirqs last  enabled at (9221): [<ffffffff8460144a>] asm_sysvec_apic_timer_interrupt+0x1a/0x20
hardirqs last disabled at (9262): [<ffffffff8445a08f>] sysvec_apic_timer_interrupt+0xf/0x90
softirqs last  enabled at (4722): [<ffffffff8118d79c>] __irq_exit_rcu+0xcc/0x110
softirqs last disabled at (4195): [<ffffffff8118d79c>] __irq_exit_rcu+0xcc/0x110
---[ end trace 0000000000000000 ]---
loop7: detected capacity change from 0 to 64
FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=5847 comm=syz-executor.1
loop5: detected capacity change from 0 to 136
ISOFS: unable to read i-node block
isofs_fill_super: get root inode failed
loop1: detected capacity change from 0 to 72
FAT-fs (loop1): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.1 not setting count and/or reply_len properly
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