linux-kernel - Re: [syzbot] [bpf?] general protection fault in bpf

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Message-ID: <000000000000cf8dba0619b7c0db@google.com>
Date: Thu, 30 May 2024 20:41:04 -0700
From: syzbot <syzbot+ba82760c63ba37799f70@...kaller.appspotmail.com>
To: andrii@...nel.org, aou@...s.berkeley.edu, ast@...nel.org, 
	bpf@...r.kernel.org, daniel@...earbox.net, eddyz87@...il.com, 
	haoluo@...gle.com, john.fastabend@...il.com, jolsa@...nel.org, 
	kpsingh@...nel.org, linux-kernel@...r.kernel.org, 
	linux-riscv@...ts.infradead.org, martin.lau@...ux.dev, netdev@...r.kernel.org, 
	olsajiri@...il.com, palmer@...belt.com, paul.walmsley@...ive.com, 
	puranjay12@...il.com, sdf@...gle.com, song@...nel.org, 
	syzkaller-bugs@...glegroups.com, yonghong.song@...ux.dev
Subject: Re: [syzbot] [bpf?] general protection fault in bpf_check (2)

syzbot suspects this issue was fixed by commit:

commit 122fdbd2a030a95128737fc77e47df15a8f170c3
Author: Puranjay Mohan <puranjay12@...il.com>
Date:   Fri Mar 22 15:35:18 2024 +0000

    bpf: verifier: reject addr_space_cast insn without arena

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14e17d3c980000
start commit:   4c2a26fc80bc bpf-next: Avoid goto in regs_refine_cond_op()
git tree:       bpf-next
kernel config:  https://syzkaller.appspot.com/x/.config?x=6fb1be60a193d440
dashboard link: https://syzkaller.appspot.com/bug?extid=ba82760c63ba37799f70
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14e6bbb9180000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12941291180000

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

#syz fix: bpf: verifier: reject addr_space_cast insn without arena

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