lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Fri, 07 Mar 2014 18:15:43 -0800 From: Behan Webster <behanw@...verseincode.com> To: Joe Perches <joe@...ches.com> CC: linville@...driver.com, johannes@...solutions.net, davem@...emloft.net, linux-wireless@...r.kernel.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, dwmw2@...radead.org, pageexec@...email.hu, Jan-Simon Möller <dl9pf@....de>, Vinícius Tinti <viniciustinti@...il.com>, Mark Charlebois <charlebm@...il.com> Subject: Re: [PATCH v2] mac80211: LLVMLinux: Remove VLAIS usage from mac80211 On 03/07/14 17:56, Joe Perches wrote: > On Fri, 2014-03-07 at 17:26 -0800, behanw@...verseincode.com wrote: >> From: Jan-Simon Möller <dl9pf@....de> >> >> Replaced the use of a Variable Length Array In Struct (VLAIS) with a C99 >> compliant equivalent. This is the original VLAIS struct. > [] >> diff --git a/net/mac80211/aes_ccm.c b/net/mac80211/aes_ccm.c > [] >> @@ -23,12 +23,14 @@ void ieee80211_aes_ccm_encrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad, >> u8 *data, size_t data_len, u8 *mic) >> { >> struct scatterlist assoc, pt, ct[2]; >> - struct { >> - struct aead_request req; >> - u8 priv[crypto_aead_reqsize(tfm)]; >> - } aead_req; >> >> - memset(&aead_req, 0, sizeof(aead_req)); >> + char aead_req_data[sizeof(struct aead_request) + >> + crypto_aead_reqsize(tfm) + >> + CRYPTO_MINALIGN] CRYPTO_MINALIGN_ATTR; > Can this be a too large amount of stack? > > Is crypto_aead_reqsize() limited to < ~1k? > > Perhaps it'd be better to use kzalloc for this > or another reserved pool No more stack being used than with the the original code. The stack memory use is identical. Behan -- Behan Webster behanw@...verseincode.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists