/* ar-skbuff.c: socket buffer destruction handling * * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include #include #include #include #include #include "ar-internal.h" #define select_skb_count(op) (op >= rxrpc_skb_tx_cleaned ? &rxrpc_n_tx_skbs : &rxrpc_n_rx_skbs) /* * Note the allocation or reception of a socket buffer. */ void rxrpc_new_skb(struct sk_buff *skb, enum rxrpc_skb_trace op) { const void *here = __builtin_return_address(0); int n = atomic_inc_return(select_skb_count(op)); trace_rxrpc_skb(skb, op, atomic_read(&skb->users), n, here); } /* * Note the re-emergence of a socket buffer from a queue or buffer. */ void rxrpc_see_skb(struct sk_buff *skb, enum rxrpc_skb_trace op) { const void *here = __builtin_return_address(0); if (skb) { int n = atomic_read(select_skb_count(op)); trace_rxrpc_skb(skb, op, atomic_read(&skb->users), n, here); } } /* * Note the addition of a ref on a socket buffer. */ void rxrpc_get_skb(struct sk_buff *skb, enum rxrpc_skb_trace op) { const void *here = __builtin_return_address(0); int n = atomic_inc_return(select_skb_count(op)); trace_rxrpc_skb(skb, op, atomic_read(&skb->users), n, here); skb_get(skb); } /* * Note the destruction of a socket buffer. */ void rxrpc_free_skb(struct sk_buff *skb, enum rxrpc_skb_trace op) { const void *here = __builtin_return_address(0); if (skb) { int n; CHECK_SLAB_OKAY(&skb->users); n = atomic_dec_return(select_skb_count(op)); trace_rxrpc_skb(skb, op, atomic_read(&skb->users), n, here); kfree_skb(skb); } } /* * Note the injected loss of a socket buffer. */ void rxrpc_lose_skb(struct sk_buff *skb, enum rxrpc_skb_trace op) { const void *here = __builtin_return_address(0); if (skb) { int n; CHECK_SLAB_OKAY(&skb->users); n = atomic_dec_return(select_skb_count(op)); trace_rxrpc_skb(skb, op, atomic_read(&skb->users), n, here); kfree_skb(skb); } } /* * Clear a queue of socket buffers. */ void rxrpc_purge_queue(struct sk_buff_head *list) { const void *here = __builtin_return_address(0); struct sk_buff *skb; while ((skb = skb_dequeue((list))) != NULL) { int n = atomic_dec_return(select_skb_count(rxrpc_skb_rx_purged)); trace_rxrpc_skb(skb, rxrpc_skb_rx_purged, atomic_read(&skb->users), n, here); kfree_skb(skb); } } on>
path: root/sound/soc/codecs/dmic.c
diff options
context:
space:
mode:
authorHarsh Jain <harsh@chelsio.com>2017-02-01 21:10:28 +0530
committerHerbert Xu <herbert@gondor.apana.org.au>2017-02-03 17:45:48 +0800
commit0b529f143e8baad441a5aac9ad55ec2434d8fb46 (patch)
treefd816e548e12745d4776ad0bd661bec142d3ea06 /sound/soc/codecs/dmic.c
parentc26819900036f5b91608051a0fc7c76f6b4ffc7b (diff)
crypto: algif_aead - Fix kernel panic on list_del
Kernel panics when userspace program try to access AEAD interface. Remove node from Linked List before freeing its memory. Cc: <stable@vger.kernel.org> Signed-off-by: Harsh Jain <harsh@chelsio.com> Reviewed-by: Stephan Müller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'sound/soc/codecs/dmic.c')