- Mar 09, 2007
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Jarek Poplawski authored
lockdep found that dev->lock taken from softirq in ipv6_add_addr is also taken in sctp_v6_copy_addrlist with softirqs enabled, so lockup is possible. Noticed-by:
Simon Arlott <simon@arlott.org> Signed-off-by:
Jarek Poplawski <jarkao2@o2.pl> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Alan Cox authored
For 2.6.20 it mostly used to just not work, for 2.6.21-rc it crashes, this seems to be down to luck (bad or good). The libata-acpi code needs to avoid doing PCI work on non-PCI devices. This is one hack although it's not pretty and perhaps there is a "right" way to check if a struct device * is PCI ? Signed-off-by:
Alan Cox <alan@redhat.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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- Mar 08, 2007
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Peter Zijlstra authored
ecryptfs uses a lock_parent() function, which I hope really locks the parents and is not abused Signed-off-by:
Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Michael Halcrow <mhalcrow@us.ibm.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Pat Gefre authored
The sn console driver was snagged by the use of CONFIG_DEBUG_SHIRQ! The request_irq() immediate call to the interrupt handler caused another attempt to lock the port lock - deadlock. This is a patch to fix that. Signed-off-by:
Patrick Gefre <pfg@sgi.com> Signed-off-by:
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Jeff Dike authored
In my previous x86_64 thread fix, I forgot to initialize thread.arch.fs in arch_prctl. A process calling arch_prctl to set %fs would lose it on the next context switch. It also turns out that you can switch to a process which is in the process of exiting and which has lost its mm. In this case, it's worse than useless to try to call arch_prctl on the host process. Signed-off-by:
Jeff Dike <jdike@linux.intel.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by:
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suzuki authored
Fix inverted check introduced in 57881dd9 "Fix check_partition routines". Signed-off-by:
Suzuki K P <suzuki@in.ibm.com> Signed-off-by:
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Davide Libenzi authored
IA64 and ARM-OABI are currently using their own version of epoll compat_ code. An architecture needs epoll_event translation if alignof(u64) in 32 bit mode is different from alignof(u64) in 64 bit mode. If an architecture needs epoll_event translation, it must define struct compat_epoll_event in asm/compat.h and set CONFIG_HAVE_COMPAT_EPOLL_EVENT and use compat_sys_epoll_ctl and compat_sys_epoll_wait. All 64 bit architecture should use compat_sys_epoll_pwait. [sfr: restructure and move to fs/compat.c, remove MIPS version of compat_sys_epoll_pwait, use __put_user_unaligned] Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Russell King <rmk@arm.linux.org.uk> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by:
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Jiri Kosina authored
[Bluetooth] Fix socket locking in hci_sock_dev_event() hci_sock_dev_event() uses bh_lock_sock() to lock the socket lock. This is not deadlock-safe against locking of the same socket lock in l2cap_connect_cfm() from softirq context. In addition to that, hci_sock_dev_event() doesn't seem to be called from softirq context, so it is safe to use lock_sock()/release_sock() instead. The lockdep warning can be triggered on my T42p simply by switching the Bluetooth off by the keyboard button. ================================= [ INFO: inconsistent lock state ] 2.6.21-rc2 #4 --------------------------------- inconsistent {in-softirq-W} -> {softirq-on-W} usage. khubd/156 [HC0[0]:SC0[0]:HE1:SE1] takes: (slock-AF_BLUETOOTH){-+..}, at: [<e0ca5520>] hci_sock_dev_event+0xa8/0xc5 [bluetooth] {in-softirq-W} state was registered at: [<c012d1db>] mark_lock+0x59/0x414 [<e0cef688>] l2cap_connect_cfm+0x4e/0x11f [l2cap] [<c012dfd7>] __lock_acquire+0x3e5/0xb99 [<e0cef688>] l2cap_connect_cfm+0x4e/0x11f [l2cap] [<c012e7f2>] lock_acquire+0x67/0x81 [<e0cef688>] l2cap_connect_cfm+0x4e/0x11f [l2cap] [<c036ee72>] _spin_lock+0x29/0x34 [<e0cef688>] l2cap_connect_cfm+0x4e/0x11f [l2cap] [<e0cef688>] l2cap_connect_cfm+0x4e/0x11f [l2cap] [<e0ca17c3>] hci_send_cmd+0x126/0x14f [bluetooth] [<e0ca4ce4>] hci_event_packet+0x729/0xebd [bluetooth] [<e0ca205b>] hci_rx_task+0x2a/0x20f [bluetooth] [<e0ca209d>] hci_rx_task+0x6c/0x20f [bluetooth] [<c012d7be>] trace_hardirqs_on+0x10d/0x14e [<c011ac85>] tasklet_action+0x3d/0x68 [<c011abba>] __do_softirq+0x41/0x92 [<c011ac32>] do_softirq+0x27/0x3d [<c0105134>] do_IRQ+0x7b/0x8f [<c0103dec>] common_interrupt+0x24/0x34 [<c0103df6>] common_interrupt+0x2e/0x34 [<c0248e65>] acpi_processor_idle+0x1b3/0x34a [<c0248e68>] acpi_processor_idle+0x1b6/0x34a [<c010232b>] cpu_idle+0x39/0x4e [<c04bab0c>] start_kernel+0x372/0x37a [<c04ba42b>] unknown_bootoption+0x0/0x202 [<ffffffff>] 0xffffffff Signed-off-by:Jiri Kosina <jkosina@suse.cz> Acked-by:
Marcel Holtmann <marcel@holtmann.org> Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Also PTRACE_OLDSETOPTIONS should be accepted, as done by kernel/ptrace.c and forced by binary compatibility. UML/32bit breaks because of this - since it is wise enough to use PTRACE_OLDSETOPTIONS to be binary compatible with 2.4 host kernels. Until 2.6.17 (commit f0f2d653 ) we had: default: return sys_ptrace(request, pid, addr, data); Instead here we have: case PTRACE_GET_THREAD_AREA: case ...: return sys_ptrace(request, pid, addr, data); default: return -EINVAL; This change was a style change - when a case is added, it must be explicitly tested this way. In this case, not enough testing was done. Cc: Andi Kleen <ak@suse.de> Signed-off-by:
Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: <stable@kernel.org> Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Avoid reusing userspace errno twice - it can be cleared by libc code everywhere (in particular printk() does clear it in my setup). Signed-off-by:
Jeff Dike <jdike@addtoit.com> Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Avoid returning ENOMEM in case of a duplicate IRQ - ENOMEM was saved into err earlier. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Fix confusion about call context - comments and code are inconsistent and plain wrong, my fault. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Since both UML consoles do not use percpu variables, they may be called when the cpu is still offline, and they may be marked CON_ANYTIME (this is documented in kernel/printk.c, grep for CON_ANYTIME to find mentions of this). Works well in testing done with lock debug enabled, should be safe but is not needed for next release. This would probably help also stderr_console.c, but this is yet to test. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
os_usr1_signal() is totally unused, os_usr1_process() is used only by TT mode. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Memory allocated by mcast_user_init must be freed in the matching mcast_remove. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
When a given host directory is specified to be mounted both in hostfs=path1 and with mount option -o path2, we should give access to path1/path2, but this does not happen. Fix that in the simpler way. Also, root_ino can be the empty string, since we use %s/%s as format. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Fix double free in the error path - when name is assigned into root_inode we do not own it any more and we must not kfree() it - see patch for details. Thanks to William Stearns for the initial report. CC: William Stearns <wstearns@pobox.com> Signed-off-by:
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Linus Torvalds authored
* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/dtor/input: Input: i8042 - another attempt to fix AUX delivery checks
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Dmitry Torokhov authored
Do not assume that AUX_LOOP command is broken unless it completes successfully but returns wrong (unexpected) data. Signed-off-by:Dmitry Torokhov <dtor@mail.ru>
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Linus Torvalds authored
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [BRIDGE]: adding new device to bridge should enable if up [IPV6]: Do not set IF_READY if device is down [IPSEC]: xfrm audit hook misplaced in pfkey_delete and xfrm_del_sa [IPSEC]: Add xfrm policy change auditing to pfkey_spdget [IPSEC]: xfrm_policy delete security check misplaced [CONNECTOR]: Bugfix for cn_call_callback() [DCCP]: Revert patch which disables bidirectional mode [IPV6]: Handle np->opt being NULL in ipv6_getsockopt_sticky(). [UDP]: Reread uh pointer after pskb_trim [NETFILTER]: nfnetlink_log: fix crash on bridged packet [NETFILTER]: nfnetlink_log: zero-terminate prefix [NETFILTER]: nf_conntrack_ipv6: fix incorrect classification of IPv6 fragments as ESTABLISHED
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git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds authored
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: [MIPS] ARC: Fix several compiler warnings. [MIPS] ISA: Fix typo [CHAR] ds1286: Fix handling of seconds in RTC_ALM_SET ioctl.
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git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6Linus Torvalds authored
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] fsys_getcpu for IA64 [IA64] remove duplicate declaration of efi_initialize_iomem_resources [IA64] Pick highest possible saved_max_pfn for crash_dump [IA64] fix NULL pointer in ia64/irq_chip-mask/unmask function
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Ralf Baechle authored
CC arch/mips/arc/init.o arch/mips/arc/init.c: In function 'prom_init': arch/mips/arc/init.c:27: warning: ISO C90 forbids mixed declarations and code arch/mips/arc/init.c:35: warning: format ‘%08lx’ expects type ‘long unsigned int’, but argument 2 has type 'ULONG' arch/mips/arc/init.c:28: warning: unused variable 'c' arch/mips/arc/init.c:27: warning: unused variable ‘cnt’ Signed-off-by:Ralf Baechle <ralf@linux-mips.org>
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Ralf Baechle authored
Lost CONFIG_ prefix discovered by Robert P. J. Day <rpjday@mindspring.com>. Signed-off-by: -
Ralf Baechle authored
o Fix use of uninitialized variable sec. o Make the RTC_ALM_SET ioctl return -EINVAL for non-zero seconds - the DS1286 has no second field for the alarm time. o Replace the obscure BIN_TO_BCD macro with BIN2BCD. Signed-off-by: -
Fenghua Yu authored
On 1.6GHz Montectio Tiger4, the following performance data is measured with kernel built with defconfig which has NUMA configured: Fastest sys_getcpu: 502 itc counts. Fastest fsys_getcpu: 28 itc counts. fsys_getcpu performance is largly impacted by whether data (node_to_cpu_map etc) is in cache. It can take fsys_getcpu up to ~150 itc counts in cold cache case. Signed-off-by:
Fenghua Yu <fenghua.yu@intel.com> Signed-off-by:
Tony Luck <tony.luck@intel.com>
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Horms authored
efi_initialize_iomem_resources() is declared in both include/linux/efi.h and arch/ia64/kernel/setup.c. This patch removes the latter. Signed-off-by:
Simon Horman <horms@verge.net.au> Signed-off-by:
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Tony Luck authored
Berhhard Walle noted that on his HP rx8640 he ended up with saved_max_pfn smaller than the highest address of system ram in /proc/iomem and proposed a patch to base the address on the unrounded and unfiltered EFI memory map address. Simon Horman and Magnus Damm suggested that the whole test be moved earlier in the function. This is the combination of both of these patches. Signed-off-by: -
Aji Srinivas authored
One change introduced by the workqueue removal patch is that adding an interface that is up to a bridge which is also up does not ever call br_stp_enable_port(), leaving the port in DISABLED state until we do ifconfig down and up or link events occur. The following patch to the br_add_if function fixes it. This is a regression introduced in 2.6.21. Submitted-by:
<Aji_Srinivas@emc.com> Signed-off-by:
Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by:
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Herbert Xu authored
Now that we add the IPv6 device at registration time we don't need to set IF_READY in ipv6_add_dev anymore because we will always get a NETDEV_UP event later on should the device ever become ready. Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
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Eric Paris authored
Inside pfkey_delete and xfrm_del_sa the audit hooks were not called if there was any permission/security failures in attempting to do the del operation (such as permission denied from security_xfrm_state_delete). This patch moves the audit hook to the exit path such that all failures (and successes) will actually get audited. Signed-off-by:
Eric Paris <eparis@redhat.com> Acked-by:
Venkat Yekkirala <vyekkirala@trustedcs.com> Acked-by:
James Morris <jmorris@namei.org> Signed-off-by:
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Eric Paris authored
pfkey_spdget neither had an LSM security hook nor auditing for the removal of xfrm_policy structs. The security hook was added when it was moved into xfrm_policy_byid instead of the callers to that function by my earlier patch and this patch adds the auditing hooks as well. Signed-off-by:
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Eric Paris authored
The security hooks to check permissions to remove an xfrm_policy were actually done after the policy was removed. Since the unlinking and deletion are done in xfrm_policy_by* functions this moves the hooks inside those 2 functions. There we have all the information needed to do the security check and it can be done before the deletion. Since auditing requires the result of that security check err has to be passed back and forth from the xfrm_policy_by* functions. This patch also fixes a bug where a deletion that failed the security check could cause improper accounting on the xfrm_policy (xfrm_get_policy didn't have a put on the exit path for the hold taken by xfrm_policy_by*) It also fixes the return code when no policy is found in xfrm_add_pol_expire. In old code (at least back in the 2.6.18 days) err wasn't used before the return when no policy is found and so the initialization would cause err to be ENOENT. But since err has since been used above when we don't get a policy back from the xfrm_policy_by* function we would always return 0 instead of the intended ENOENT. Also fixed some white space damage in the same area. Signed-off-by:
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Philipp Reisner authored
When system under heavy stress and must allocate new work instead of reusing old one, new work must use correct completion callback. Patch is based on Philipp's and Lars' work. I only cleaned small stuff (and removed spaces instead of tabs). Signed-off-by:
Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by:
Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by:
Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by:
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Gerrit Renker authored
This reverts an earlier patch which disabled bidirectional mode, meaning that a listening (passive) socket was not allowed to write to the other (active) end of the connection. This mode had been disabled when there were problems with CCID3, but it imposes a constraint on socket programming and thus hinders deployment. A change is included to ignore RX feedback received by the TX CCID3 module. Many thanks to Andre Noll for pointing out this issue. Signed-off-by:
Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by:
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David S. Miller authored
Signed-off-by: -
Herbert Xu authored
The header may have moved when trimming. Signed-off-by:
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Patrick McHardy authored
physoutdev is only set on purely bridged packet, when nfnetlink_log is used in the OUTPUT/FORWARD/POSTROUTING hooks on packets forwarded from or to a bridge it crashes when trying to dereference skb->nf_bridge->physoutdev. Reported by Holger Eitzenberger <heitzenberger@astaro.com> Signed-off-by:
Patrick McHardy <kaber@trash.net> Signed-off-by:
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Patrick McHardy authored
Userspace expects a zero-terminated string, so include the trailing zero in the netlink message. Signed-off-by:
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Patrick McHardy authored
The individual fragments of a packet reassembled by conntrack have the conntrack reference from the reassembled packet attached, but nfctinfo is not copied. This leaves it initialized to 0, which unfortunately is the value of IP_CT_ESTABLISHED. The result is that all IPv6 fragments are tracked as ESTABLISHED, allowing them to bypass a usual ruleset which accepts ESTABLISHED packets early. Signed-off-by:
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