loop1: detected capacity change from 0 to 128
sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.3 not setting count and/or reply_len properly
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6301 at lib/iov_iter.c:376 _copy_from_iter+0x2bf/0x1200
Modules linked in:
CPU: 0 PID: 6301 Comm: syz-executor.3 Not tainted 6.3.0-rc6-next-20230413 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:_copy_from_iter+0x2bf/0x1200
Code: 5d 41 5e 41 5f e9 c5 94 35 02 e8 dc 87 36 ff be 7c 01 00 00 48 c7 c7 40 cd 9e 84 e8 cb 93 5a ff e9 48 fe ff ff e8 c1 87 36 ff <0f> 0b 45 31 f6 eb 87 e8 b5 87 36 ff 31 ff 89 ee e8 ec 82 36 ff 40
RSP: 0018:ffff888048e57608 EFLAGS: 00010212
RAX: 0000000000003a9c RBX: 0000000000000000 RCX: ffffc900007fb000
RDX: 0000000000040000 RSI: ffffffff82153edf RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff888048e57838
R13: ffffea00007b7c00 R14: 0000000000001000 R15: ffff888048e57838
FS:  00007f4bf531a700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb416fd3d38 CR3: 00000000488ac000 CR4: 0000000000350ef0
DR0: 0000000020000040 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+0x2d8/0xdc0
 ksys_write+0x12b/0x260
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f4bf7da4b19
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:00007f4bf531a188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f4bf7eb7f60 RCX: 00007f4bf7da4b19
RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000004
RBP: 00007f4bf7dfef6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffff5c1517f R14: 00007f4bf531a300 R15: 0000000000022000
 </TASK>
irq event stamp: 975
hardirqs last  enabled at (981): [<ffffffff813038c4>] vprintk_emit+0x504/0x560
hardirqs last disabled at (986): [<ffffffff8130385b>] vprintk_emit+0x49b/0x560
softirqs last  enabled at (730): [<ffffffff8118db0c>] __irq_exit_rcu+0xcc/0x110
softirqs last disabled at (725): [<ffffffff8118db0c>] __irq_exit_rcu+0xcc/0x110
---[ end trace 0000000000000000 ]---
isofs_fill_super: bread failed, dev=loop1, iso_blknum=32, block=64
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=6312 comm=syz-executor.3
sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.3 not setting count and/or reply_len properly
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=6312 comm=syz-executor.3
loop1: detected capacity change from 0 to 128
isofs_fill_super: bread failed, dev=loop1, iso_blknum=32, block=64
tmpfs: Unknown parameter 'mask'
tmpfs: Unknown parameter 'mask'
SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22
SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22