Re: [syzbot] [kernfs?] possible deadlock in kernfs_path_from_node

From: syzbot
Date: Sun Oct 13 2024 - 08:09:23 EST


syzbot suspects this issue was fixed by commit:

commit b6273b55d88539c6a7127a697c61d3f89c5831fe
Author: Takaya Saeki <takayas@xxxxxxxxxxxx>
Date: Tue Aug 13 10:03:12 2024 +0000

filemap: add trace events for get_pages, map_pages, and fault

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10f59087980000
start commit: 8a3f14bb1e94 libbpf: Workaround (another) -Wmaybe-uninitia..
git tree: bpf-next
kernel config: https://syzkaller.appspot.com/x/.config?x=eb19570bf3f0c14f
dashboard link: https://syzkaller.appspot.com/bug?extid=0772686ab2731ef3b722
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10aa1ffb980000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15b1abc7980000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: filemap: add trace events for get_pages, map_pages, and fault

For information about bisection process see: https://goo.gl/tpsmEJ#bisection