Thread (63 messages) 63 messages, 12 authors, 2017-03-21

Re: [PATCH 24/29] drivers: convert iblock_req.pending from atomic_t to refcount_t

From: Nicholas A. Bellinger <hidden>
Date: 2017-03-21 07:18:14
Also in: linux-bcache, linux-media, linux-pci, linux-raid, linux-scsi, linux-serial, lkml

Hi Elena,

On Mon, 2017-03-06 at 16:21 +0200, Elena Reshetova wrote:
refcount_t type and corresponding API should be
used instead of atomic_t when the variable is used as
a reference counter. This allows to avoid accidental
refcounter overflows that might lead to use-after-free
situations.

Signed-off-by: Elena Reshetova <redacted>
Signed-off-by: Hans Liljestrand <redacted>
Signed-off-by: Kees Cook <redacted>
Signed-off-by: David Windsor <redacted>
---
 drivers/target/target_core_iblock.c | 12 ++++++------
 drivers/target/target_core_iblock.h |  3 ++-
 2 files changed, 8 insertions(+), 7 deletions(-)
After reading up on this thread, it looks like various subsystem
maintainers are now picking these atomic_t -> refcount_t conversions..

That said, applied to target-pending/for-next and will plan to include
for v4.12-rc1 merge window.

Thanks!

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