R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 0000000000000000 R14: 00007f1ef9735f80 R15: 00007ffec8b8ac28
 </TASK>
------------[ cut here ]------------
WARNING: CPU: 3 PID: 14358 at lib/iov_iter.c:255 _copy_from_iter+0x3a0/0x1560 lib/iov_iter.c:255
Modules linked in:
CPU: 3 UID: 0 PID: 14358 Comm: syz.0.2387 Not tainted 6.12.0-rc4-syzkaller-00261-g850925a8133c #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:_copy_from_iter+0x3a0/0x1560 lib/iov_iter.c:255
Code: 60 fd 0f 01 cb 48 89 d9 4c 89 f7 48 89 ee f3 a4 0f 1f 00 48 89 cd 0f 01 ca 49 89 df 49 29 cf e9 1e ff ff ff e8 11 92 fe fc 90 <0f> 0b 90 e9 ae fd ff ff e8 03 92 fe fc 89 ee bf 01 00 00 00 e8 d7
RSP: 0018:ffffc90005936fd0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff848eeb48
RDX: ffff8880231a8000 RSI: ffffffff848eee2f RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88806132ece0
R13: ffffc900059373c0 R14: ffff88806132ece0 R15: dffffc0000000000
FS:  00007f1efa2a96c0(0000) GS:ffff88806a900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1ef8fded58 CR3: 000000005ce72000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 copy_from_iter include/linux/uio.h:219 [inline]
 copy_from_iter_full include/linux/uio.h:236 [inline]
 pdu_write_u net/9p/protocol.c:234 [inline]
 p9pdu_vwritef+0x2d0/0x1cf0 net/9p/protocol.c:614
 p9_client_prepare_req+0x244/0x4d0 net/9p/client.c:651
 p9_client_rpc+0x1c3/0xc10 net/9p/client.c:691
 p9_client_write+0x31f/0x680 net/9p/client.c:1645
 v9fs_issue_write+0xe2/0x180 fs/9p/vfs_addr.c:59
 netfs_do_issue_write+0x92/0x110 fs/netfs/write_issue.c:233
 netfs_issue_write fs/netfs/write_issue.c:260 [inline]
 netfs_write_folio+0x82f/0x1930 fs/netfs/write_issue.c:505
 netfs_end_writethrough+0x53/0x170 fs/netfs/write_issue.c:672
 netfs_perform_write+0x1b1c/0x21a0 fs/netfs/buffered_write.c:385
 netfs_buffered_write_iter_locked fs/netfs/buffered_write.c:445 [inline]
 netfs_file_write_iter+0x432/0x4f0 fs/netfs/buffered_write.c:484
 v9fs_file_write_iter+0x9b/0x100 fs/9p/vfs_file.c:407
 aio_write+0x3b2/0x8c0 fs/aio.c:1633
 __io_submit_one fs/aio.c:2005 [inline]
 io_submit_one+0x1248/0x1da0 fs/aio.c:2052
 __do_sys_io_submit fs/aio.c:2111 [inline]
 __se_sys_io_submit fs/aio.c:2081 [inline]
 __x64_sys_io_submit+0x19d/0x330 fs/aio.c:2081
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1ef957e719
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1efa2a9038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 00007f1ef9735f80 RCX: 00007f1ef957e719
RDX: 0000000020000040 RSI: 0000000000000001 RDI: 00007f1efa281000
RBP: 00007f1efa2a9090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 0000000000000000 R14: 00007f1ef9735f80 R15: 00007ffec8b8ac28
 </TASK>