R13: 0000000000000000 R14: 00007f34bbb35f80 R15: 00007ffe6d4aea88
 </TASK>
------------[ cut here ]------------
WARNING: CPU: 0 PID: 9862 at lib/iov_iter.c:255 _copy_from_iter+0x3a0/0x1560 lib/iov_iter.c:255
Modules linked in:
CPU: 0 UID: 0 PID: 9862 Comm: syz.3.1060 Not tainted 6.12.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
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 e8 37 be 88 06 48 89 cd 0f 01 ca 49 89 df 49 29 cf e9 1e ff ff ff e8 61 e1 fe fc 90 <0f> 0b 90 e9 ae fd ff ff e8 53 e1 fe fc 89 ee bf 01 00 00 00 e8 27
RSP: 0018:ffffc90002d2ef28 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000004 RCX: ffffffff848e9718
RDX: ffff888037654880 RSI: ffffffff848e99ff RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888077d00060
R13: ffffc90002d2f318 R14: ffff888077d00060 R15: dffffc0000000000
FS:  00007f34bc8566c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fa1fffc CR3: 00000000335ca000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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_advance_write fs/netfs/write_issue.c:301 [inline]
 netfs_advance_write+0x384/0xc80 fs/netfs/write_issue.c:269
 netfs_write_folio+0xc19/0x1930 fs/netfs/write_issue.c:485
 netfs_writepages+0x29a/0x9d0 fs/netfs/write_issue.c:581
 do_writepages+0x1a3/0x7f0 mm/page-writeback.c:2683
 filemap_fdatawrite_wbc mm/filemap.c:398 [inline]
 filemap_fdatawrite_wbc+0x148/0x1c0 mm/filemap.c:388
 __filemap_fdatawrite_range+0xb3/0xf0 mm/filemap.c:431
 file_write_and_wait_range+0xca/0x140 mm/filemap.c:788
 v9fs_file_fsync+0xdb/0x1c0 fs/9p/vfs_file.c:418
 vfs_fsync_range+0x136/0x220 fs/sync.c:188
 generic_write_sync include/linux/fs.h:2871 [inline]
 netfs_file_write_iter+0x3dd/0x4f0 fs/netfs/buffered_write.c:487
 v9fs_file_write_iter+0x9b/0x100 fs/9p/vfs_file.c:407
 new_sync_write fs/read_write.c:590 [inline]
 vfs_write+0x5ae/0x1150 fs/read_write.c:683
 ksys_write+0x12f/0x260 fs/read_write.c:736
 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: 0033:0x7f34bb97e759
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:00007f34bc856038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f34bbb35f80 RCX: 00007f34bb97e759
RDX: 0000000000000004 RSI: 0000000020000300 RDI: 0000000000000007
RBP: 00007f34bc856090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 00007f34bbb35f80 R15: 00007ffe6d4aea88
 </TASK>