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Date: Mon, 24 Oct 2022 13:01:31 +0800 From: Herbert Xu <herbert@...dor.apana.org.au> To: Eric Dumazet <edumazet@...gle.com> Cc: syzbot <syzbot+1e9af9185d8850e2c2fa@...kaller.appspotmail.com>, davem@...emloft.net, kuba@...nel.org, linux-kernel@...r.kernel.org, netdev@...r.kernel.org, pabeni@...hat.com, steffen.klassert@...unet.com, syzkaller-bugs@...glegroups.com Subject: Re: [syzbot] kernel BUG in warn_crc32c_csum_combine On Sun, Oct 23, 2022 at 07:49:44PM -0700, Eric Dumazet wrote: > > pfkey_send_acquire() allocates and skb, and then later this skb seems > to be too small to fit all dump info. > > Maybe ->available status flips during the duration of the call ? > > (So count_esp_combs() might return a value, but later dump_esp_combs() > needs more space) Thanks! > Relevant patch suggests this could happen > > commit ba953a9d89a00c078b85f4b190bc1dde66fe16b5 > Author: Herbert Xu <herbert@...dor.apana.org.au> > Date: Thu Aug 4 18:03:46 2022 +0800 > > af_key: Do not call xfrm_probe_algs in parallel Yes this looks like the same issue just in a different spot. Cheers, -- Email: Herbert Xu <herbert@...dor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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