| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.0 05/55] sparc: Use GFP_ATOMIC in ldc_alloc_exp_dring() as it can be called in softirq context | Date | Wed, 8 Jul 2015 00:34:40 -0700 |
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4.0-stable review patch. If anyone has any objections, please let me know.
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From: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Upstream commit 671d773297969bebb1732e1cdc1ec03aa53c6be2
Since it is possible for vnet_event_napi to end up doing vnet_control_pkt_engine -> ... -> vnet_send_attr -> vnet_port_alloc_tx_ring -> ldc_alloc_exp_dring -> kzalloc() (i.e., in softirq context), kzalloc() should be called with GFP_ATOMIC from ldc_alloc_exp_dring.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- arch/sparc/kernel/ldc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/sparc/kernel/ldc.c +++ b/arch/sparc/kernel/ldc.c @@ -2313,7 +2313,7 @@ void *ldc_alloc_exp_dring(struct ldc_cha if (len & (8UL - 1)) return ERR_PTR(-EINVAL); - buf = kzalloc(len, GFP_KERNEL); + buf = kzalloc(len, GFP_ATOMIC); if (!buf) return ERR_PTR(-ENOMEM);
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