------------[ cut here ]------------
WARNING: CPU: 1 PID: 4315 at lib/iov_iter.c:629 _copy_from_iter+0x2f1/0x1130
Modules linked in:
CPU: 1 PID: 4315 Comm: syz-executor.1 Not tainted 6.1.0-rc7-next-20221202 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:_copy_from_iter+0x2f1/0x1130
Code: 37 ff 44 89 f3 e9 2f ff ff ff e8 5a 16 37 ff be 79 02 00 00 48 c7 c7 40 bd 9e 84 e8 b9 94 5a ff e9 13 fe ff ff e8 3f 16 37 ff <0f> 0b 45 31 f6 e9 77 ff ff ff e8 30 16 37 ff 31 ff 89 ee e8 f7 11
RSP: 0018:ffff8880215d75e8 EFLAGS: 00010212
RAX: 0000000000003e6c RBX: 0000000000000000 RCX: ffffc90007023000
RDX: 0000000000040000 RSI: ffffffff8211fe11 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000001000
R13: ffffea00011cf200 R14: 0000000000001000 R15: ffff8880215d7818
FS:  00007fbdf5038700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1380821fe8 CR3: 000000000dd56000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 copy_page_from_iter+0xe3/0x180
 blk_rq_map_user_iov+0xb0c/0x1650
 blk_rq_map_user_io+0x1ee/0x220
 sg_common_write.constprop.0+0xd84/0x15e0
 sg_write.part.0+0x706/0xb20
 sg_write+0x88/0xe0
 vfs_write+0x358/0xe40
 ksys_write+0x12b/0x260
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7fbdf7ac2b19
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:00007fbdf5038188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fbdf7bd5f60 RCX: 00007fbdf7ac2b19
RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000003
RBP: 00007fbdf7b1cf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff67f6100f R14: 00007fbdf5038300 R15: 0000000000022000
 </TASK>
irq event stamp: 1149
hardirqs last  enabled at (1161): [<ffffffff812e1228>] __up_console_sem+0x78/0x80
hardirqs last disabled at (1172): [<ffffffff812e120d>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (348): [<ffffffff811834db>] __irq_exit_rcu+0x11b/0x180
softirqs last disabled at (317): [<ffffffff811834db>] __irq_exit_rcu+0x11b/0x180
---[ end trace 0000000000000000 ]---
device syz_tun entered promiscuous mode
device lo entered promiscuous mode
device lo left promiscuous mode
device syz_tun left promiscuous mode
=======================================================
WARNING: The mand mount option has been deprecated and
         and is ignored by this kernel. Remove the mand
         option from the mount to silence this warning.
=======================================================