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* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds2008-04-024-18/+31
|\ | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc64: remove unused calc_npages() in iommu_common.h sparc64: add the segment boundary checking to IOMMUs while merging SG entries [SPARC64]: Don't open-code {get,put}_cpu_var() in flush_tlb_pending().
| * sparc64: remove unused calc_npages() in iommu_common.hFUJITA Tomonori2008-03-281-13/+0Star
| | | | | | | | | | | | Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: add the segment boundary checking to IOMMUs while merging SG entriesFUJITA Tomonori2008-03-283-4/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some IOMMUs allocate memory areas spanning LLD's segment boundary limit. It forces low level drivers to have a workaround to adjust scatter lists that the IOMMU builds. We are in the process of making all the IOMMUs respect the segment boundary limits to remove such work around in LLDs. SPARC64 IOMMUs were rewritten to use the IOMMU helper functions and the commit 89c94f2f70d093f59b55d3ea8042d13889169346 made the IOMMUs not allocate memory areas spanning the segment boundary limit. However, SPARC64 IOMMUs allocate memory areas first then try to merge them (while some IOMMUs walk through all the sg entries to see how they can be merged first and allocate memory areas). So SPARC64 IOMMUs also need the boundary limit checking when they try to merge sg entries. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [SPARC64]: Don't open-code {get,put}_cpu_var() in flush_tlb_pending().David S. Miller2008-03-281-5/+2Star
| | | | | | | | | | | | Noticed by Andrew Morton. Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2008-04-0269-751/+323Star
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (45 commits) [VLAN]: Proc entry is not renamed when vlan device name changes. [IPV6]: Fix ICMP relookup error path dst leak [ATM] drivers/atm/iphase.c: compilation warning fix IPv6: do not create temporary adresses with too short preferred lifetime IPv6: only update the lifetime of the relevant temporary address bluetooth : __rfcomm_dlc_close lock fix bluetooth : use lockdep sub-classes for diffrent bluetooth protocol [ROSE/AX25] af_rose: rose_release() fix mac80211: correct use_short_preamble handling b43: Fix PCMCIA IRQ routing b43: Add DMA mapping failure messages mac80211: trigger ieee80211_sta_work after opening interface [LLC]: skb allocation size for responses [IP] UDP: Use SEQ_START_TOKEN. [NET]: Remove Documentation/networking/sk98lin.txt [ATM] atm/idt77252.c: Make 2 functions static [ATM]: Make atm/he.c:read_prom_byte() static [IPV6] MCAST: Ensure to check multicast listener(s). [LLC]: Kill llc_station_mac_sa symbol export. forcedeth: fix locking bug with netconsole ...
| * | [VLAN]: Proc entry is not renamed when vlan device name changes.Pavel Emelyanov2008-04-023-6/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This may lead to situations, when each of two proc entries produce data for the other's device. Looks like a BUG, so this patch is for net-2.6. It will not apply to net-2.6.26 since dev->nd_net access is replaced with dev_net(dev) one. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [IPV6]: Fix ICMP relookup error path dst leakHerbert Xu2008-04-021-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | When we encounter an error while looking up the dst the second time we need to drop the first dst. This patch is pretty much the same as the one for IPv4. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [ATM] drivers/atm/iphase.c: compilation warning fixLeonardo Potenza2008-04-021-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Removed the warning messages: drivers/atm/iphase.c:961: warning: 'tcnter' defined but not used drivers/atm/iphase.c:963: warning: 'xdump' defined but not used tcnter and xdump() are used only in debug build Signed-off-by: Leonardo Potenza <lpotenza@inwind.it> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | IPv6: do not create temporary adresses with too short preferred lifetimeBenoit Boissinot2008-04-021-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From RFC341: A temporary address is created only if this calculated Preferred Lifetime is greater than REGEN_ADVANCE time units. In particular, an implementation must not create a temporary address with a zero Preferred Lifetime. Signed-off-by: Benoit Boissinot <benoit.boissinot@ens-lyon.org> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | IPv6: only update the lifetime of the relevant temporary addressBenoit Boissinot2008-04-021-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When receiving a prefix information from a routeur, only update the lifetimes of the temporary address associated with that prefix. Otherwise if one deprecated prefix is advertized, all your temporary addresses will become deprecated. Signed-off-by: Benoit Boissinot <benoit.boissinot@ens-lyon.org> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | bluetooth : __rfcomm_dlc_close lock fixDave Young2008-04-022-6/+1Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Lockdep warning will be trigged while rfcomm connection closing. The locks taken in rfcomm_dev_add: rfcomm_dev_lock --> d->lock In __rfcomm_dlc_close: d->lock --> rfcomm_dev_lock (in rfcomm_dev_state_change) There's two way to fix it, one is in rfcomm_dev_add we first locking d->lock then the rfcomm_dev_lock The other (in this patch), remove the locking of d->lock for rfcomm_dev_state_change because just locking "d->state = BT_CLOSED;" is enough. [ 295.002046] ======================================================= [ 295.002046] [ INFO: possible circular locking dependency detected ] [ 295.002046] 2.6.25-rc7 #1 [ 295.002046] ------------------------------------------------------- [ 295.002046] krfcommd/2705 is trying to acquire lock: [ 295.002046] (rfcomm_dev_lock){-.--}, at: [<f89a090a>] rfcomm_dev_state_change+0x6a/0xd0 [rfcomm] [ 295.002046] [ 295.002046] but task is already holding lock: [ 295.002046] (&d->lock){--..}, at: [<f899c533>] __rfcomm_dlc_close+0x43/0xd0 [rfcomm] [ 295.002046] [ 295.002046] which lock already depends on the new lock. [ 295.002046] [ 295.002046] [ 295.002046] the existing dependency chain (in reverse order) is: [ 295.002046] [ 295.002046] -> #1 (&d->lock){--..}: [ 295.002046] [<c0149b23>] check_prev_add+0xd3/0x200 [ 295.002046] [<c0149ce5>] check_prevs_add+0x95/0xe0 [ 295.002046] [<c0149f6f>] validate_chain+0x23f/0x320 [ 295.002046] [<c014b7b1>] __lock_acquire+0x1c1/0x760 [ 295.002046] [<c014c349>] lock_acquire+0x79/0xb0 [ 295.002046] [<c03d6b99>] _spin_lock+0x39/0x80 [ 295.002046] [<f89a01c0>] rfcomm_dev_add+0x240/0x360 [rfcomm] [ 295.002046] [<f89a047e>] rfcomm_create_dev+0x6e/0xe0 [rfcomm] [ 295.002046] [<f89a0823>] rfcomm_dev_ioctl+0x33/0x60 [rfcomm] [ 295.002046] [<f899facc>] rfcomm_sock_ioctl+0x2c/0x50 [rfcomm] [ 295.002046] [<c0363d38>] sock_ioctl+0x118/0x240 [ 295.002046] [<c0194196>] vfs_ioctl+0x76/0x90 [ 295.002046] [<c0194446>] do_vfs_ioctl+0x56/0x140 [ 295.002046] [<c0194569>] sys_ioctl+0x39/0x60 [ 295.002046] [<c0104faa>] syscall_call+0x7/0xb [ 295.002046] [<ffffffff>] 0xffffffff [ 295.002046] [ 295.002046] -> #0 (rfcomm_dev_lock){-.--}: [ 295.002046] [<c0149a84>] check_prev_add+0x34/0x200 [ 295.002046] [<c0149ce5>] check_prevs_add+0x95/0xe0 [ 295.002046] [<c0149f6f>] validate_chain+0x23f/0x320 [ 295.002046] [<c014b7b1>] __lock_acquire+0x1c1/0x760 [ 295.002046] [<c014c349>] lock_acquire+0x79/0xb0 [ 295.002046] [<c03d6639>] _read_lock+0x39/0x80 [ 295.002046] [<f89a090a>] rfcomm_dev_state_change+0x6a/0xd0 [rfcomm] [ 295.002046] [<f899c548>] __rfcomm_dlc_close+0x58/0xd0 [rfcomm] [ 295.002046] [<f899d44f>] rfcomm_recv_ua+0x6f/0x120 [rfcomm] [ 295.002046] [<f899e061>] rfcomm_recv_frame+0x171/0x1e0 [rfcomm] [ 295.002046] [<f899e357>] rfcomm_run+0xe7/0x550 [rfcomm] [ 295.002046] [<c013c18c>] kthread+0x5c/0xa0 [ 295.002046] [<c0105c07>] kernel_thread_helper+0x7/0x10 [ 295.002046] [<ffffffff>] 0xffffffff [ 295.002046] [ 295.002046] other info that might help us debug this: [ 295.002046] [ 295.002046] 2 locks held by krfcommd/2705: [ 295.002046] #0: (rfcomm_mutex){--..}, at: [<f899e2eb>] rfcomm_run+0x7b/0x550 [rfcomm] [ 295.002046] #1: (&d->lock){--..}, at: [<f899c533>] __rfcomm_dlc_close+0x43/0xd0 [rfcomm] [ 295.002046] [ 295.002046] stack backtrace: [ 295.002046] Pid: 2705, comm: krfcommd Not tainted 2.6.25-rc7 #1 [ 295.002046] [<c0128a38>] ? printk+0x18/0x20 [ 295.002046] [<c014927f>] print_circular_bug_tail+0x6f/0x80 [ 295.002046] [<c0149a84>] check_prev_add+0x34/0x200 [ 295.002046] [<c0149ce5>] check_prevs_add+0x95/0xe0 [ 295.002046] [<c0149f6f>] validate_chain+0x23f/0x320 [ 295.002046] [<c014b7b1>] __lock_acquire+0x1c1/0x760 [ 295.002046] [<c014c349>] lock_acquire+0x79/0xb0 [ 295.002046] [<f89a090a>] ? rfcomm_dev_state_change+0x6a/0xd0 [rfcomm] [ 295.002046] [<c03d6639>] _read_lock+0x39/0x80 [ 295.002046] [<f89a090a>] ? rfcomm_dev_state_change+0x6a/0xd0 [rfcomm] [ 295.002046] [<f89a090a>] rfcomm_dev_state_change+0x6a/0xd0 [rfcomm] [ 295.002046] [<f899c548>] __rfcomm_dlc_close+0x58/0xd0 [rfcomm] [ 295.002046] [<f899d44f>] rfcomm_recv_ua+0x6f/0x120 [rfcomm] [ 295.002046] [<f899e061>] rfcomm_recv_frame+0x171/0x1e0 [rfcomm] [ 295.002046] [<c014abd9>] ? trace_hardirqs_on+0xb9/0x130 [ 295.002046] [<c03d6e89>] ? _spin_unlock_irqrestore+0x39/0x70 [ 295.002046] [<f899e357>] rfcomm_run+0xe7/0x550 [rfcomm] [ 295.002046] [<c03d4559>] ? __sched_text_start+0x229/0x4c0 [ 295.002046] [<c0120000>] ? cpu_avg_load_per_task+0x20/0x30 [ 295.002046] [<f899e270>] ? rfcomm_run+0x0/0x550 [rfcomm] [ 295.002046] [<c013c18c>] kthread+0x5c/0xa0 [ 295.002046] [<c013c130>] ? kthread+0x0/0xa0 [ 295.002046] [<c0105c07>] kernel_thread_helper+0x7/0x10 [ 295.002046] ======================= Signed-off-by: Dave Young <hidave.darkstar@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | bluetooth : use lockdep sub-classes for diffrent bluetooth protocolDave Young2008-04-021-0/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'rfcomm connect' will trigger lockdep warnings which is caused by locking diffrent kinds of bluetooth sockets at the same time. So using sub-classes per AF_BLUETOOTH sub-type for lockdep. Thanks for the hints from dave jones. --- > From: Dave Jones <davej@codemonkey.org.uk> > Date: Thu, 27 Mar 2008 12:21:56 -0400 > > > Mar 27 08:10:57 localhost kernel: Pid: 3611, comm: obex-data-serve Not tainted 2.6.25-0.121.rc5.git4.fc9 #1 > > Mar 27 08:10:57 localhost kernel: [__lock_acquire+2287/3089] __lock_acquire+0x8ef/0xc11 > > Mar 27 08:10:57 localhost kernel: [sched_clock+8/11] ? sched_clock+0x8/0xb > > Mar 27 08:10:57 localhost kernel: [lock_acquire+106/144] lock_acquire+0x6a/0x90 > > Mar 27 08:10:57 localhost kernel: [<f8bd9321>] ? l2cap_sock_bind+0x29/0x108 [l2cap] > > Mar 27 08:10:57 localhost kernel: [lock_sock_nested+182/198] lock_sock_nested+0xb6/0xc6 > > Mar 27 08:10:57 localhost kernel: [<f8bd9321>] ? l2cap_sock_bind+0x29/0x108 [l2cap] > > Mar 27 08:10:57 localhost kernel: [security_socket_post_create+22/27] ? security_socket_post_create+0x16/0x1b > > Mar 27 08:10:57 localhost kernel: [__sock_create+388/472] ? __sock_create+0x184/0x1d8 > > Mar 27 08:10:57 localhost kernel: [<f8bd9321>] l2cap_sock_bind+0x29/0x108 [l2cap] > > Mar 27 08:10:57 localhost kernel: [kernel_bind+10/13] kernel_bind+0xa/0xd > > Mar 27 08:10:57 localhost kernel: [<f8dad3d7>] rfcomm_dlc_open+0xc8/0x294 [rfcomm] > > Mar 27 08:10:57 localhost kernel: [lock_sock_nested+187/198] ? lock_sock_nested+0xbb/0xc6 > > Mar 27 08:10:57 localhost kernel: [<f8dae18c>] rfcomm_sock_connect+0x8b/0xc2 [rfcomm] > > Mar 27 08:10:57 localhost kernel: [sys_connect+96/125] sys_connect+0x60/0x7d > > Mar 27 08:10:57 localhost kernel: [__lock_acquire+1370/3089] ? __lock_acquire+0x55a/0xc11 > > Mar 27 08:10:57 localhost kernel: [sys_socketcall+140/392] sys_socketcall+0x8c/0x188 > > Mar 27 08:10:57 localhost kernel: [syscall_call+7/11] syscall_call+0x7/0xb --- Signed-off-by: Dave Young <hidave.darkstar@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [ROSE/AX25] af_rose: rose_release() fixJarek Poplawski2008-04-021-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | rose_release() doesn't release sockets properly, e.g. it skips sock_orphan(), so OOPSes are triggered in sock_def_write_space(), which was observed especially while ROSE skbs were kfreed from ax25_frames_acked(). There is also sock_hold() and lock_sock() added - similarly to ax25_release(). Thanks to Bernard Pidoux for substantial help in debugging this problem. Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Reported-and-tested-by: Bernard Pidoux <bpidoux@free.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | mac80211: correct use_short_preamble handlingVladimir Koutny2008-04-011-5/+4Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | ERP IE bit for preamble mode is 0 for short and 1 for long, not the other way around. This fixes the value reported to the driver via bss_conf->use_short_preamble field. Signed-off-by: Vladimir Koutny <vlado@ksp.sk> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * | b43: Fix PCMCIA IRQ routingMichael Buesch2008-04-011-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | This fixes the IRQ routing on PCMCIA devices. With this patch the card will finally be able to receive IRQs. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * | b43: Add DMA mapping failure messagesMichael Buesch2008-04-011-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | This adds messages for some DMA mapping failures. These are useful for debugging DMA address problems, as they appear on x86_64 machines with IOMMU enabled. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * | mac80211: trigger ieee80211_sta_work after opening interfaceJan Niehusmann2008-04-011-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ieee80211_sta_work is disabled while network interface is down. Therefore, if you configure wireless parameters before bringing the interface up, these configurations are not yet effective and association fails. A workaround from userspace is calling a command like 'iwconfig wlan0 ap any' after the interface is brought up. To fix this behaviour, trigger execution of ieee80211_sta_work from ieee80211_open when in STA or IBSS mode. Signed-off-by: Jan Niehusmann <jan@gondor.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * | [LLC]: skb allocation size for responsesJoonwoo Park2008-04-017-35/+74
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allocate the skb for llc responses with the received packet size by using the size adjustable llc_frame_alloc. Don't allocate useless extra payload. Cleanup magic numbers. So, this fixes oops. Reported by Jim Westfall: kernel: skb_over_panic: text:c0541fc7 len:1000 put:997 head:c166ac00 data:c166ac2f tail:0xc166b017 end:0xc166ac80 dev:eth0 kernel: ------------[ cut here ]------------ kernel: kernel BUG at net/core/skbuff.c:95! Signed-off-by: Joonwoo Park <joonwpark81@gmail.com> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [IP] UDP: Use SEQ_START_TOKEN.YOSHIFUJI Hideaki2008-04-011-2/+2
| | | | | | | | | | | | | | | Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NET]: Remove Documentation/networking/sk98lin.txtAdrian Bunk2008-04-012-571/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | Since the driver is gone there's no point in keeping the documentation. Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [ATM] atm/idt77252.c: Make 2 functions staticAdrian Bunk2008-04-011-4/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch makes the following needlessly global functions static: - idt77252_send() - idt77252_dev_close() Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [ATM]: Make atm/he.c:read_prom_byte() staticAdrian Bunk2008-04-011-2/+1Star
| | | | | | | | | | | | | | | | | | | | | This patch makes the needlessly global read_prom_byte() static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [IPV6] MCAST: Ensure to check multicast listener(s).YOSHIFUJI Hideaki2008-04-011-2/+1Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In ip6_mc_input(), we need to check whether we have listener(s) for the packet. After commit ae7bf20a6316272acfcaef5d265b18aaa54b41e4, all packets for multicast destinations are delivered to upper layer if IFF_PROMISC or IFF_ALLMULTI is set. In fact, bug was rather ancient; the original (before the commit) intent of the dev->flags check was to skip the ipv6_chk_mcast_addr() call, assuming L2 filters packets appropriately, but it was even not true. Let's explicitly check our multicast list. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Acked-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [LLC]: Kill llc_station_mac_sa symbol export.David S. Miller2008-03-291-1/+0Star
| | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
| * | Merge branch 'upstream-davem' of ↵David S. Miller2008-03-2910-21/+28
| |\ \ | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6
| | * | forcedeth: fix locking bug with netconsoleIngo Molnar2008-03-291-8/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While using netconsole on forcedeth, lockdep noticed the following locking bug: ================================= [ INFO: inconsistent lock state ] 2.6.24-rc6 #6 Signed-off-by: Ingo Molnar <mingo@elte.hu> --------------------------------- inconsistent {softirq-on-W} -> {in-softirq-W} usage. udevd/719 [HC0[0]:SC1[1]:HE1:SE0] takes: (_xmit_ETHER){-+..}, at: [<c043062e>] dev_watchdog+0x1c/0xb9 {softirq-on-W} state was registered at: [<c0147f67>] mark_held_locks+0x4e/0x66 [<c014810e>] trace_hardirqs_on+0xfe/0x136 [<c048ae63>] _spin_unlock_irq+0x22/0x42 [<c02ec617>] nv_start_xmit_optimized+0x347/0x37a [<c042c80d>] netpoll_send_skb+0xa4/0x147 [<c042d4a6>] netpoll_send_udp+0x238/0x242 [<c02f44f6>] write_msg+0x6d/0x9b [<c012c129>] __call_console_drivers+0x4e/0x5a [<c012c18c>] _call_console_drivers+0x57/0x5b [<c012c2dd>] release_console_sem+0x11c/0x1b9 [<c012caeb>] register_console+0x1eb/0x1f3 [<c06ae673>] init_netconsole+0x119/0x15f [<c069149b>] kernel_init+0x147/0x294 [<c01058cb>] kernel_thread_helper+0x7/0x10 [<ffffffff>] 0xffffffff irq event stamp: 950 hardirqs last enabled at (950): [<c048ae63>] _spin_unlock_irq+0x22/0x42 hardirqs last disabled at (949): [<c048aaf7>] _spin_lock_irq+0xc/0x38 softirqs last enabled at (0): [<c012a29c>] copy_process+0x375/0x126d softirqs last disabled at (947): [<c0106d43>] do_softirq+0x61/0xc6 other info that might help us debug this: no locks held by udevd/719. stack backtrace: Pid: 719, comm: udevd Not tainted 2.6.24-rc6 #6 [<c0105c46>] show_trace_log_lvl+0x12/0x25 [<c01063ec>] show_trace+0xd/0x10 [<c010670c>] dump_stack+0x57/0x5f [<c0147505>] print_usage_bug+0x10a/0x117 [<c0147c38>] mark_lock+0x121/0x402 [<c01488b6>] __lock_acquire+0x3d1/0xb64 [<c0149405>] lock_acquire+0x4e/0x6a [<c048a99b>] _spin_lock+0x23/0x32 [<c043062e>] dev_watchdog+0x1c/0xb9 [<c0133e4a>] run_timer_softirq+0x133/0x193 [<c0130907>] __do_softirq+0x78/0xed [<c0106d43>] do_softirq+0x61/0xc6 ======================= eth1: link down The fix is to disable/restore irqs instead of disable/enable. Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Ayaz Abdulla <aabdulla@nvidia.com> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| | * | usb net: asix does not really need 10/100mbitMike Frysinger2008-03-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The asix usb driver currently depends on NET_ETHERNET which means you cannot enable this driver if you only have 1000mbit enabled in your kernel. Since there is no real dependency between the NET_ETHERNET portion and the asix driver, simply drop it. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: Greg KH <greg@kroah.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| | * | Blackfin EMAC Driver: delete unused variables to fixup gcc warningsMike Frysinger2008-03-291-2/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| | * | ibm_newemac: emac_tx_csum typo fixValentine Barshak2008-03-291-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the "&& skb->ip_summed == CHECKSUM_PARTIAL" part out of emac_has_feature parameters. Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| | * | Make pasemi_mac.c depend on PPC_PASEMI to prevent link errorsMichael Ellerman2008-03-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | drivers/net/pasemi_mac.c is enabled by CONFIG_PASEMI_MAC, which depends on PPC64 && PCI. However pasemi_mac.c uses several routines that are only built when PPC_PASEMI is selected. This can lead to an unbuildable config: ERROR: ".pasemi_dma_start_chan" [drivers/net/pasemi_mac.ko] undefined! So make CONFIG_PASEMI_MAC depend on PPC_PASEMI instead of PPC64. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| | * | S2io: Version update for Tx completion patchSreenivasa Honnur2008-03-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Updated version number. - Resubmitting with correct version update. - this patch to be applied for upstream-davem branch Signed-off-by: Surjit Reang <surjit.reang@neterion.com> Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| | * | drivers/net/usb/pegasus.c: remove in_atomic() checkDavid Brownell2008-03-291-4/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove superfluous in-atomic() check; ethtool MII ops are called from task context. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Greg KH <greg@kroah.com> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| | * | dm9601: Fix multicast hash table handlingPeter Korsgaard2008-03-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The loop forgot to walk the net->mc_list list, so only the first multicast address was programmed into the hash table. Signed-off-by: Jeff Garzik <jeff@garzik.org>
| | * | [netdrvr] tulip_read_eeprom fixes for BUG 4420Grant Grundler2008-03-292-1/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If "location" is > "addr_len" bits, the high bits of location would interfere with the READ_CMD sent to the eeprom controller. A patch was submitted to bug: http://bugzilla.kernel.org/show_bug.cgi?id=4420 which simply truncated the "location", read whatever was in "location modulo addr_len", and returned that value. That avoids confusing the eeprom but seems like the wrong solution to me. Correct would be to not read beyond "1 << addr_len" address of the eeprom. I am submitting two changes to implement this: 1) tulip_read_eeprom will return zero (since we can't return -EINVAL) if this is attempted (defensive programming). 2) In tulip_core.c, fix the tulip_read_eeprom caller so they don't iterate past addr_len bits and make sure the entire tp->eeprom[] array is cleared. I konw we don't strictly need both. I would prefer both in the tree since it documents the issue and provides a second "defense" from the bug from creeping back in. Signed-off-by: Grant Grundler <grundler@parisc-linux.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * | | [INET]: inet_frag_evictor() must run with BH disabledDavid S. Miller2008-03-292-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | Based upon a lockdep trace from Dave Jones. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | net: Comment dev_kfree_skb_irq and dev_kfree_skb_any betterMatti Linnanvuori2008-03-291-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Comment dev_kfree_skb_irq and dev_kfree_skb_any better. Signed-off-by: Matti Linnanvuori <mattilinnanvuori@yahoo.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | [LLC]: station source mac addressJoonwoo Park2008-03-293-11/+4Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | kill unnecessary llc_station_mac_sa. Signed-off-by: Joonwoo Park <joonwpark81@gmail.com> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | [LLC]: bogus llc packet lengthJoonwoo Park2008-03-291-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | discard llc packet which has bogus packet length. Signed-off-by: Joonwoo Park <joonwpark81@gmail.com> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | [NET]: Add preemption point in qdisc_runHerbert Xu2008-03-291-3/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The qdisc_run loop is currently unbounded and runs entirely in a softirq. This is bad as it may create an unbounded softirq run. This patch fixes this by calling need_resched and breaking out if necessary. It also adds a break out if the jiffies value changes since that would indicate we've been transmitting for too long which starves other softirqs. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | [NET]: Don't send ICMP_FRAG_NEEDED for GSO packetsRusty Russell2008-03-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 9af3912ec9e30509b76cb376abb65a4d8af27df3 ("[NET] Move DF check to ip_forward") added a new check to send ICMP fragmentation needed for large packets. Unlike the check in ip_finish_output(), it doesn't check for GSO. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | [ATM] firestream: Fix uninitialized var warning.David S. Miller2008-03-291-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All code paths set tmc0 in some way, but GCC can't see that for some reason. Explicitly initialize to zero. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | bluetooth: replace deprecated RW_LOCK_UNLOCKED macrosRobert P. J. Day2008-03-294-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The older RW_LOCK_UNLOCKED macros defeat lockdep state tracing so replace them with the newer __RW_LOCK_UNLOCKED macros. Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | lapb: use the shorter LIST_HEAD form for brevityRobert P. J. Day2008-03-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | [BOND]: Fix warning in bond_sysfs.cDavid S. Miller2008-03-291-0/+1
| |/ / | | | | | | | | | | | | | | | | | | | | | original_mtu is only used if we end up with a non-NULL dev, and it is assigned in all such cases, but GCC can't see that. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [LLC]: Restrict LLC sockets to rootPatrick McHardy2008-03-281-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | LLC currently allows users to inject raw frames, including IP packets encapsulated in SNAP. While Linux doesn't handle IP over SNAP, other systems do. Restrict LLC sockets to root similar to packet sockets. [ Modified Patrick's patch to use CAP_NEW_RAW --DaveM ] Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | Merge branch 'master' of ↵David S. Miller2008-03-283-5/+12
| |\ \ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
| | * | rt2x00: Ignore set_state(STATE_SLEEP) failureIvo van Doorn2008-03-271-2/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some hardware never seem to accept the "goto sleep" command, since the legacy drivers don't have suspend and resume handlers the entire code for it was basically a educated guess (based on the "enable radio" code). This patch will only print a warning when the "goto sleep" command fails, and just continues as usual. Perhaps that means the device will not reach a sleep state and consumes more power then it should, but it is equally possible it simply needs some seconds longer to sleep. Anyway, by making the command non-fatal it will not block the rest of the suspend procedure. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * | drivers/net/wireless/iwlwifi/iwl-4965.c: correct use of ! and &Julia Lawall2008-03-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In commit e6bafba5b4765a5a252f1b8d31cbf6d2459da337, a bug was fixed that involved converting !x & y to !(x & y). The code below shows the same pattern, and thus should perhaps be fixed in the same way. This is not tested and clearly changes the semantics, so it is only something to consider. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ expression E1,E2; @@ ( !E1 & !E2 | - !E1 & E2 + !(E1 & E2) ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Cc: Tomas Winkler <tomas.winkler@intel.com> Cc: Guy Cohen <guy.cohen@intel.com> Cc: Reinette Chatre <reinette.chatre@intel.com> Cc: Zhu Yi <yi.zhu@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * | libertas: fix spinlock recursion bugHolger Schurig2008-03-271-2/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes a bug detected by CONFIG_DEBUG_SPINLOCK: if_cs_get_int_status() is only called from lbs_thread(), via priv->hw_get_int_status. However, lbs_thread() has already taken the priv->driver_lock. So it's a fault to take the same lock again here. Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de> Acked-by: Dan Williams <dcbw@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * | | [NET]: Use local_irq_{save,restore}() in napi_complete().David S. Miller2008-03-281-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Based upon a lockdep report. Since ->poll() can be invoked from netpoll with interrupts disabled, we must not unconditionally enable interrupts in napi_complete(). Instead we must use local_irq_{save,restore}(). Noticed by Peter Zijlstra: <irqs disabled> netpoll_poll() poll_napi() spin_trylock(&napi->poll_lock) poll_one_napi() napi->poll() := sky2_poll() napi_complete() local_irq_disable() local_irq_enable() <--- *BUG* <irq> irq_exit() do_softirq() net_rx_action() spin_lock(&napi->poll_lock) <--- Deadlock! Because we still hold the lock.... Signed-off-by: David S. Miller <davem@davemloft.net>
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-07-16 08:48:56 +0200