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authorLinus Torvalds <torvalds@linux-foundation.org>2021-10-24 09:48:33 -1000
committerLinus Torvalds <torvalds@linux-foundation.org>2021-10-24 09:48:33 -1000
commit87066fdd2e30fe9dd531125d95257c118a74617e (patch)
tree889339bdce44c612c179d28ab9209978e85eef48 /arch/x86
parentb20078fd69a3da08d85c79b95101cf25c4afcc97 (diff)
downloadlinux-master.tar.gz
Revert "mm/secretmem: use refcount_t instead of atomic_t"HEADmaster
This reverts commit 110860541f443f950c1274f217a1a3e298670a33. Converting the "secretmem_users" counter to a refcount is incorrect, because a refcount is special in zero and can't just be incremented (but a count of users is not, and "no users" is actually perfectly valid and not a sign of a free'd resource). Reported-by: syzbot+75639e6a0331cd61d3e2@syzkaller.appspotmail.com Cc: Jordy Zomer <jordy@pwning.systems> Cc: Kees Cook <keescook@chromium.org>, Cc: Jordy Zomer <jordy@jordyzomer.github.io> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86')
0 files changed, 0 insertions, 0 deletions