Revision 4fabb59449aa44a585b3603ffdadd4c5f4d0c033 authored by Wengang Wang on 06 July 2015, 06:35:11 UTC, committed by Doug Ledford on 14 July 2015, 17:20:11 UTC
Fixes: 3e0249f9c05c ("RDS/IB: add refcount tracking to struct rds_ib_device") There lacks a dropping on rds_ib_device.refcount in case rds_ib_alloc_fmr failed(mr pool running out). this lead to the refcount overflow. A complain in line 117(see following) is seen. From vmcore: s_ib_rdma_mr_pool_depleted is 2147485544 and rds_ibdev->refcount is -2147475448. That is the evidence the mr pool is used up. so rds_ib_alloc_fmr is very likely to return ERR_PTR(-EAGAIN). 115 void rds_ib_dev_put(struct rds_ib_device *rds_ibdev) 116 { 117 BUG_ON(atomic_read(&rds_ibdev->refcount) <= 0); 118 if (atomic_dec_and_test(&rds_ibdev->refcount)) 119 queue_work(rds_wq, &rds_ibdev->free_work); 120 } fix is to drop refcount when rds_ib_alloc_fmr failed. Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com> Reviewed-by: Haggai Eran <haggaie@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
1 parent 0a69127
module-common.lds
/*
* Common module linker script, always used when linking a module.
* Archs are free to supply their own linker scripts. ld will
* combine them automatically.
*/
SECTIONS {
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__kcrctab_gpl_future 0 : { *(SORT(___kcrctab_gpl_future+*)) }
. = ALIGN(8);
.init_array 0 : { *(SORT(.init_array.*)) *(.init_array) }
}
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