linux-kernel - Re: [syzbot] [bpf?] [net?] possible deadlock in sock_map_delete

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Message-ID: <00000000000050b78b061d822720@google.com>
Date: Thu, 18 Jul 2024 02:25:02 -0700
From: syzbot <syzbot+4ac2fe2b496abca8fa4b@...kaller.appspotmail.com>
To: andrii@...nel.org, ast@...nel.org, bpf@...r.kernel.org, 
	daniel@...earbox.net, davem@...emloft.net, edumazet@...gle.com, 
	jakub@...udflare.com, john.fastabend@...il.com, kuba@...nel.org, 
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org, pabeni@...hat.com, 
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [bpf?] [net?] possible deadlock in sock_map_delete_elem

syzbot suspects this issue was fixed by commit:

commit 98e948fb60d41447fd8d2d0c3b8637fc6b6dc26d
Author: Jakub Sitnicki <jakub@...udflare.com>
Date:   Mon May 27 11:20:07 2024 +0000

    bpf: Allow delete from sockmap/sockhash only if update is allowed

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=15df62b5980000
start commit:   4c639b6a7b9d selftests: net: move amt to socat for better ..
git tree:       net
kernel config:  https://syzkaller.appspot.com/x/.config?x=6d14c12b661fb43
dashboard link: https://syzkaller.appspot.com/bug?extid=4ac2fe2b496abca8fa4b
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=153e3f70980000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=174ac5d4980000

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

#syz fix: bpf: Allow delete from sockmap/sockhash only if update is allowed

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