linux-kernel - Re: [syzbot] [fs?] [trace?] BUG: unable to handle kernel paging request in tracefs_apply

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Date: Mon, 12 Feb 2024 09:10:02 -0800
From: syzbot <syzbot+f8a023e0c6beabe2371a@...kaller.appspotmail.com>
To: eadavis@...com, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org, 
	mathieu.desnoyers@...icios.com, mhiramat@...nel.org, rostedt@...dmis.org, 
	syzkaller-bugs@...glegroups.com, torvalds@...ux-foundation.org
Subject: Re: [syzbot] [fs?] [trace?] BUG: unable to handle kernel paging
 request in tracefs_apply_options

syzbot suspects this issue was fixed by commit:

commit ad579864637af46447208254719943179b69d41a
Author: Steven Rostedt (Google) <rostedt@...dmis.org>
Date:   Tue Jan 2 20:12:49 2024 +0000

    tracefs: Check for dentry->d_inode exists in set_gid()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=17659d24180000
start commit:   453f5db0619e Merge tag 'trace-v6.7-rc7' of git://git.kerne..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=f8e72bae38c079e4
dashboard link: https://syzkaller.appspot.com/bug?extid=f8a023e0c6beabe2371a
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1414af31e80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15e52409e80000

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

#syz fix: tracefs: Check for dentry->d_inode exists in set_gid()

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