On 23.04.21 07:40, Juergen Gross wrote:
Commit d3eeb1d77c5d0af ("xen/gntdev: use mmu_interval_notifier_insert") introduced an error in gntdev_mmap(): in case the call of mmu_interval_notifier_insert_locked() fails the exit path should not call mmu_interval_notifier_remove(), as this might result in NULL dereferences.One reason for failure is e.g. a signal pending for the running process. Fixes: d3eeb1d77c5d0af ("xen/gntdev: use mmu_interval_notifier_insert") Cc: sta...@vger.kernel.org Reported-by: Marek Marczykowski-Górecki <marma...@invisiblethingslab.com> Tested-by: Marek Marczykowski-Górecki <marma...@invisiblethingslab.com> Signed-off-by: Juergen Gross <jgr...@suse.com>
Pushed to xen/tip.git for-linus-5.13b Juergen
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