Re: [syzbot] [mm?] BUG: stack guard page was hit in v9fs_file_read_iter

[syzbot]

Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
kernel panic: corrupted stack end in corrupted

subreq: ffff88802e249680, 1async: 0, r: ffff888023be2d80, transed: 4096, sub req length: 16777088, retry times: 47, subreq consume: 0, subreq list empty: 0, netfs_read_subreq_terminated
subreq: ffff88802e249680, err: 0, total: 0, transfed: 4096, v9fs_issue_read
Kernel panic - not syncing: corrupted stack end detected inside scheduler
CPU: 1 UID: 0 PID: 19770 Comm: syz.0.14673 Not tainted 6.12.0-rc6-syzkaller-gff7afaeca1a1-dirty #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>


Tested on:

commit:         ff7afaec Merge tag 'nfs-for-6.12-3' of git://git.linux..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1195bd5f980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c0b2fb415081f288
dashboard link: https://syzkaller.appspot.com/bug?extid=1fc6f64c40a9d143cfb6
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
patch:          https://syzkaller.appspot.com/x/patch.diff?x=17b00ea7980000