RAX: ffffffffffffffda RBX: 00007f4287976080 RCX: 00007f4287785d29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180 RBP: 00007f4288586090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 00007f4287976080 R15: 00007ffc872d2638 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 10419 at lib/iov_iter.c:255 _copy_from_iter+0x39c/0x1560 lib/iov_iter.c:255 Modules linked in: CPU: 0 UID: 0 PID: 10419 Comm: syz.1.1123 Not tainted 6.13.0-rc7-syzkaller-00019-gc45323b7560e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:_copy_from_iter+0x39c/0x1560 lib/iov_iter.c:255 Code: 5e fd 0f 01 cb 48 89 d9 4c 89 f7 48 89 ee e8 db c8 8a 06 48 89 cd 0f 01 ca 49 89 df 49 29 cf e9 22 ff ff ff e8 a5 f6 fb fc 90 <0f> 0b 90 e9 b2 fd ff ff e8 97 f6 fb fc 89 ee bf 01 00 00 00 e8 2b RSP: 0018:ffffc90004b4ee50 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000007fec RCX: ffffffff849e2b18 RDX: ffff888012f2a440 RSI: ffffffff849e2dfb RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000003 R12: ffff8880131012e0 R13: ffffc90004b4f240 R14: ffff8880131012e0 R15: dffffc0000000000 FS: 00007f42885866c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb9a355b946 CR3: 000000006bf62000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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+0xe4/0x1b0 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:262 [inline] netfs_advance_write fs/netfs/write_issue.c:303 [inline] netfs_advance_write+0x384/0xc80 fs/netfs/write_issue.c:271 netfs_write_folio+0xc19/0x1930 fs/netfs/write_issue.c:487 netfs_writepages+0x29a/0x8f0 fs/netfs/write_issue.c:583 do_writepages+0x1b3/0x820 mm/page-writeback.c:2708 filemap_fdatawrite_wbc mm/filemap.c:388 [inline] filemap_fdatawrite_wbc+0x104/0x160 mm/filemap.c:378 __filemap_fdatawrite_range+0xb3/0xf0 mm/filemap.c:421 v9fs_vfs_setattr+0x93a/0xab0 fs/9p/vfs_inode.c:1072 notify_change+0x6a6/0x1230 fs/attr.c:552 vfs_utimes+0x41d/0x850 fs/utimes.c:66 do_utimes_path fs/utimes.c:99 [inline] do_utimes+0x124/0x2a0 fs/utimes.c:140 do_futimesat+0x18f/0x200 fs/utimes.c:194 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: 0033:0x7f4287785d29 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:00007f4288586038 EFLAGS: 00000246 ORIG_RAX: 00000000000000eb RAX: ffffffffffffffda RBX: 00007f4287976080 RCX: 00007f4287785d29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180 RBP: 00007f4288586090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 00007f4287976080 R15: 00007ffc872d2638