search for: skb_copy_bits

skb_copy_bits() can return an err, so have netif_be_start_xmit() crash informatively.. thanks, Nivedita _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

OK please try the following patch [PATCH] neighbour: fix a race in neigh_destroy() There is a race in neighbour code, because neigh_destroy() uses skb_queue_purge(&neigh->arp_queue) without holding neighbour lock, while other parts of the code assume neighbour rwlock is what protects arp_queue Convert all skb_queue_purge() calls to the __skb_queue_purge() variant Use

...0 ffff880076b9e280 ffff8800637097f0 > >> 000002ec00000000 00000000000002b8 ffff880077ac0000 0000000000000000 > >> ffff8800637097f0 ffff880066c9a7c0 00000000fffffdb4 000000000000024c > >> Call Trace: > >> <IRQ> > >> [<ffffffff8142db21>] ? skb_copy_bits+0x1c1/0x2e0 > >> [<ffffffff8142f173>] skb_copy+0xf3/0x120 > >> [<ffffffff81447fbc>] neigh_timer_handler+0x1ac/0x350 > >> [<ffffffff810573fe>] ? account_idle_ticks+0xe/0x10 > >> [<ffffffff81447e10>] ? neigh_alloc+0x180/0x180 > >&g...

...ysical Server Model: HP DL360G6 (Nehalem Server, 48GB RAM) <Panic Message> blkback: ring-ref 8, event-channel 9, protocol 1 (x86_64-abi) blkback: ring-ref 9, event-channel 10, protocol 1 (x86_64-abi) Unable to handle kernel paging request at ffff880074ec2b68 RIP: [<ffffffff804158eb>] skb_copy_bits+0x114/0x1d3 PGD 11a4067 PUD 13a6067 PMD 154e067 PTE 0 Oops: 0000 [1] SMP last sysfs file: /devices/xen-backend/vbd-1-51712/statistics/wr_sect CPU 2 Modules linked in: bridge netloop netbk blktap blkbk sg bonding ipv6 xfrm_nalgo crypto_api ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr isc...

...= 0x72428be7 kernel(rtnl_lock) = 0xc7a4fbed kernel(rtnl_unlock) = 0x6e720ff2 kernel(schedule) = 0x01000e51 kernel(sk_release_kernel) = 0x829200f4 kernel(skb_checksum) = 0x10af67fe kernel(skb_checksum_help) = 0x72fad770 kernel(skb_clone) = 0xd87b0b1f kernel(skb_copy_and_csum_dev) = 0x51154c2a kernel(skb_copy_bits) = 0x20242fb9 kernel(skb_gso_segment) = 0x3461dbb2 kernel(skb_pull) = 0xd3c80841 kernel(skb_pull_rcsum) = 0xc238d18d kernel(skb_push) = 0x3229caeb kernel(skb_put) = 0x207b7e2c kernel(skb_trim) = 0xc01e3b23 kernel(sock_create_kern) = 0xe91d52ab kernel(strcmp) = 0xe2d5255a kernel(strcpy) = 0xe914e41e...

From: Sjur Br?ndeland <sjur.brandeland at stericsson.com> This driver depends on Rusty's new host virtio ring implementation, so this patch-set is based on the vringh branch in Rusty's git. Changes since V1: - Use the new iov helper functions, and simplify iov handling. However this triggers compile warnings, as it takes struct iov while kernel api uses struct kiov - Introduced

From: Sjur Br?ndeland <sjur.brandeland at stericsson.com> This driver depends on Rusty's new host virtio ring implementation, so this patch-set is based on the vringh branch in Rusty's git. Changes since V1: - Use the new iov helper functions, and simplify iov handling. However this triggers compile warnings, as it takes struct iov while kernel api uses struct kiov - Introduced

From: Sjur Br?ndeland <sjur.brandeland at stericsson.com> This patch-set introduces the CAIF Virtio Link layer driver. This driver depends on Rusty's new host virtio ring implementation, so this patch-set is based on the vringh branch in Rusty's git. Regards, Sjur cc: Rusty Russell <rusty at rustcorp.com.au> cc: Ohad Ben-Cohen <ohad at wizery.com> cc: David S. Miller

From: Sjur Br?ndeland <sjur.brandeland at stericsson.com> This patch-set introduces the CAIF Virtio Link layer driver. This driver depends on Rusty's new host virtio ring implementation, so this patch-set is based on the vringh branch in Rusty's git. Regards, Sjur cc: Rusty Russell <rusty at rustcorp.com.au> cc: Ohad Ben-Cohen <ohad at wizery.com> cc: David S. Miller

...- 1); + buf_info->size = cfv->tx_hr + skb->len + cfv->tx_tr + pad_len; + + /* allocate dma memory buffer */ + buf_info->vaddr = (void *)gen_pool_alloc(cfv->genpool, buf_info->size); + if (unlikely(!buf_info->vaddr)) + goto err; + + /* copy skbuf contents to send buffer */ + skb_copy_bits(skb, 0, buf_info->vaddr + cfv->tx_hr + pad_len, skb->len); + sg_init_one(sg, buf_info->vaddr + pad_len, + skb->len + cfv->tx_hr + cfv->rx_hr); + + return buf_info; +err: + kfree(buf_info); + return NULL; +} + +/* Put the CAIF packet on the virtio ring and kick the receiver...

...- 1); + buf_info->size = cfv->tx_hr + skb->len + cfv->tx_tr + pad_len; + + /* allocate dma memory buffer */ + buf_info->vaddr = (void *)gen_pool_alloc(cfv->genpool, buf_info->size); + if (unlikely(!buf_info->vaddr)) + goto err; + + /* copy skbuf contents to send buffer */ + skb_copy_bits(skb, 0, buf_info->vaddr + cfv->tx_hr + pad_len, skb->len); + sg_init_one(sg, buf_info->vaddr + pad_len, + skb->len + cfv->tx_hr + cfv->rx_hr); + + return buf_info; +err: + kfree(buf_info); + return NULL; +} + +/* Put the CAIF packet on the virtio ring and kick the receiver...

This patch-set introduces the CAIF Virtio Link layer. The purpose is to communicate with a remote processor (a modem) over shared memory. Virtio is used as the transport mechanism, and the Remoteproc framework provides configuration and management of the Virtio rings and devices. The modem and Linux host may be on the same SoC, or connected over a shared memory interface such as LLI. Zero-Copy

This patch-set introduces the CAIF Virtio Link layer. The purpose is to communicate with a remote processor (a modem) over shared memory. Virtio is used as the transport mechanism, and the Remoteproc framework provides configuration and management of the Virtio rings and devices. The modem and Linux host may be on the same SoC, or connected over a shared memory interface such as LLI. Zero-Copy