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Date: Sun, 26 Apr 2020 14:53:42 -0700 From: Eric Dumazet <eric.dumazet@...il.com> To: "Jason A. Donenfeld" <Jason@...c4.com>, Eric Dumazet <eric.dumazet@...il.com> Cc: syzbot <syzbot+0251e883fe39e7a0cb0a@...kaller.appspotmail.com>, David Miller <davem@...emloft.net>, Florian Fainelli <f.fainelli@...il.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, jhs@...atatu.com, Jiří Pírko <jiri@...nulli.us>, Krzysztof Kozlowski <krzk@...nel.org>, kuba@...nel.org, kvalo@...eaurora.org, leon@...nel.org, LKML <linux-kernel@...r.kernel.org>, linux-kselftest@...r.kernel.org, Netdev <netdev@...r.kernel.org>, Shuah Khan <shuah@...nel.org>, syzkaller-bugs@...glegroups.com, Thomas Gleixner <tglx@...utronix.de>, vivien.didelot@...il.com, Cong Wang <xiyou.wangcong@...il.com> Subject: Re: INFO: rcu detected stall in wg_packet_tx_worker On 4/26/20 1:46 PM, Jason A. Donenfeld wrote: > > Ah, whew, okay. I had just begun instrumenting sfq (the highly > technical term for "adding printks everywhere") to figure out what's > going on. Looks like you've got a handle on it, so I'll let you have > at it. Yes, syzbot manages to put a zero in q->scaled_quantum I will send a fix. > > On the brighter side, it seems like Dmitry's and my effort to get full > coverage of WireGuard has paid off in the sense that tons of packets > wind up being shoveled through it in one way or another, which is > good. > Sure !
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