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Date: Mon, 22 Aug 2016 16:56:57 +0300 From: Jari Ruusu <jariruusu@...rs.sourceforge.net> To: Willy Tarreau <w@....eu>, linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Al Viro <viro@...iv.linux.org.uk>, Ben Hutchings <ben@...adent.org.uk>, Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: Re: [PATCH 3.10 099/180] fix d_walk()/non-delayed __d_free() race This patch for 3.10 branch appears to be missing one important + dentry->d_flags |= DCACHE_RCUACCESS; in fs/dcache.c __d_materialise_dentry() function. When Ben Hutchings backported Al Viro's original fix to stable branches that he maintains, he added that one additional line to both 3.2 and 3.16 branches. Please consider including that additional one line fix for 3.10 stable branch also. Ben Hutchings said this on his 3.2.82-rc1 patch: [bwh: Backported to 3.2: - Adjust context - Also set the flag in __d_materialise_dentry())] http://marc.info/?l=linux-kernel&m=147117565612275&w=2 Ben Hutchings said this on his 3.16.37-rc1 patch: [bwh: Backported to 3.16: - Adjust context - Also set the flag in __d_materialise_dentry())] http://marc.info/?l=linux-kernel&m=147117433412006&w=2 Also mentioned by Sasha Levin on 3.18 and 4.1 commits: Cc: stable@...r.kernel.org # v3.2+ (and watch out for __d_materialise_dentry()) http://marc.info/?l=linux-stable-commits&m=146648034410827&w=2 http://marc.info/?l=linux-stable-commits&m=146647471009771&w=2 -- Jari Ruusu 4096R/8132F189 12D6 4C3A DCDA 0AA4 27BD ACDF F073 3C80 8132 F189
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