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![]() Under certain conditions, such as MPI_Abort, the hfi1 cleanup code may
represent the last reference held on the task mm.
hfi1_mmu_rb_unregister() then drops the last reference and the mm is freed
before the final use in hfi1_release_user_pages(). A new task may
allocate the mm structure while it is still being used, resulting in
problems. One manifestation is corruption of the mmap_sem counter leading
to a hang in down_write(). Another is corruption of an mm struct that is
in use by another task.
Fixes:
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.. | ||
bnxt_re | ||
cxgb4 | ||
efa | ||
hfi1 | ||
hns | ||
irdma | ||
mlx4 | ||
mlx5 | ||
mthca | ||
ocrdma | ||
qedr | ||
qib | ||
usnic | ||
vmw_pvrdma | ||
Makefile |