linux-kernel - Re: [syzbot] [mm?] [cgroups?] general protection fault in refill_obj

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Message-ID: <loiano2kji2pin44d7btrufm5ovdi5rm4fdmajhlvarsbfrbru@olcbsrrrdrh3>
Date: Tue, 27 May 2025 10:42:29 -0700
From: Shakeel Butt <shakeel.butt@...ux.dev>
To: syzbot <syzbot+5dd4e428fa723938e6fd@...kaller.appspotmail.com>
Cc: akpm@...ux-foundation.org, cgroups@...r.kernel.org, hannes@...xchg.org, 
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, mhocko@...nel.org, muchun.song@...ux.dev, 
	roman.gushchin@...ux.dev, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [mm?] [cgroups?] general protection fault in
 refill_obj_stock

On Tue, May 27, 2025 at 06:37:32AM -0700, syzbot wrote:
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    914873bc7df9 Merge tag 'x86-build-2025-05-25' of git://git..
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=12dcf882580000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=231a962e5fdb804b
> dashboard link: https://syzkaller.appspot.com/bug?extid=5dd4e428fa723938e6fd
> compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
> 
> Unfortunately, I don't have any reproducer for this issue yet.
> 
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/ecae640d0786/disk-914873bc.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/d451e50efeae/vmlinux-914873bc.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/8f7363263e49/bzImage-914873bc.xz
> 
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+5dd4e428fa723938e6fd@...kaller.appspotmail.com

#syz dup: [syzbot] [cgroups?] [mm?] BUG: unable to handle kernel paging request in percpu_ref_get_many (2)