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SubjectRe: [PATCH v11 4/6] xen/blkback: Protect 'reclaim_memory()' with 'reclaim_lock'
On 17.12.19 17:07, SeongJae Park wrote:
> From: SeongJae Park <>
> The 'reclaim_memory()' callback of blkback could race with
> 'xen_blkbk_probe()' and 'xen_blkbk_remove()'. In the case, incompletely
> linked 'backend_info' and 'blkif' might be exposed to the callback, thus
> result in bad results including NULL dereference. This commit fixes the
> problem by applying the 'reclaim_lock' protection to those.
> Note that this commit is separated for review purpose only. As the
> previous commit might result in race condition and might make bisect
> confuse, please squash this commit into previous commit if possible.
> Signed-off-by: SeongJae Park <>

Please merge this patch into patch 2.


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