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 linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Sun, 3 Apr 2016 08:24:03 -0400 From: Shamir Rabinovitch <shamir.rabinovitch@...cle.com> To: rds-devel@....oracle.com, netdev@...r.kernel.org Cc: davem@...emloft.net, shamir.rabinovitch@...cle.com Subject: [PATCH v3 1/2] RDS: fix "Kernel unaligned access" on sparc64 Sparc64 expect 64 bit types to be aligned to 8. This patch ensure that memory allocated by 'rds_page_remainder_alloc' will be aligned to 8. This patch fix issue found in 'rds_ib_cong_recv' when accessing unaligned memory using uint64_t pointer. Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@...cle.com> Reviewed-by: Wengang Wang <wen.gang.wang@...cle.com> Reviewed-by: Ajaykumar Hotchandani <ajaykumar.hotchandani@...cle.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@...cle.com> Tested-by: Anand Bibhuti <anand.bibhuti@...cle.com> --- net/rds/page.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff --git a/net/rds/page.c b/net/rds/page.c index 616f21f..4813e1f 100644 --- a/net/rds/page.c +++ b/net/rds/page.c @@ -135,8 +135,9 @@ int rds_page_remainder_alloc(struct scatterlist *scat, unsigned long bytes, if (rem->r_offset != 0) rds_stats_inc(s_page_remainder_hit); - rem->r_offset += bytes; - if (rem->r_offset == PAGE_SIZE) { + /* fix 'Kernel unaligned access' on sparc64 */ + rem->r_offset += ALIGN(bytes, 8); + if (rem->r_offset >= PAGE_SIZE) { __free_page(rem->r_page); rem->r_page = NULL; } -- 1.7.1
Powered by blists - more mailing lists