The patch titled
lockdep: annotate __icmpv6_socket
has been removed from the -mm tree. Its filename is
lockdep-fix-sk_dst_check-deadlock.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: lockdep: annotate __icmpv6_socket
From: Ingo Molnar <mingo@xxxxxxx>
Split off __icmpv6_socket's sk->sk_dst_lock class, because it gets used
from softirqs, which is safe for __icmpv6_sockets (because they never get
directly used via userspace syscalls), but unsafe for normal sockets.
Has no effect on non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Jeff Garzik <jeff@xxxxxxxxxx>
Cc: Arjan van de Ven <arjan@xxxxxxxxxxxxxxx>
Acked-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
net/ipv6/icmp.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff -puN net/ipv6/icmp.c~lockdep-fix-sk_dst_check-deadlock net/ipv6/icmp.c
--- a/net/ipv6/icmp.c~lockdep-fix-sk_dst_check-deadlock
+++ a/net/ipv6/icmp.c
@@ -714,6 +714,11 @@ discard_it:
return 0;
}
+/*
+ * Special lock-class for __icmpv6_socket:
+ */
+static struct lock_class_key icmpv6_socket_sk_dst_lock_key;
+
int __init icmpv6_init(struct net_proto_family *ops)
{
struct sock *sk;
@@ -732,6 +737,14 @@ int __init icmpv6_init(struct net_proto_
sk = per_cpu(__icmpv6_socket, i)->sk;
sk->sk_allocation = GFP_ATOMIC;
+ /*
+ * Split off their lock-class, because sk->sk_dst_lock
+ * gets used from softirqs, which is safe for
+ * __icmpv6_socket (because those never get directly used
+ * via userspace syscalls), but unsafe for normal sockets.
+ */
+ lockdep_set_class(&sk->sk_dst_lock,
+ &icmpv6_socket_sk_dst_lock_key);
/* Enough space for 2 64K ICMP packets, including
* sk_buff struct overhead.
_
Patches currently in -mm which might be from mingo@xxxxxxx are
origin.patch
git-netdev-all.patch
fstack-protector-feature-annotate-the-pda-offsets.patch
fstack-protector-feature-add-the-kconfig-option.patch
fstack-protector-feature-add-the-canary-field-to-the.patch
fstack-protector-feature-add-the-__stack_chk_fail.patch
bootmem-use-max_dma_address-instead-of-low32limit.patch
slab-fix-lockdep-warnings.patch
slab-fix-lockdep-warnings-fix.patch
slab-fix-lockdep-warnings-fix-2.patch
i386-early-fault-handler.patch
i386-kill-references-to-xtime.patch
make-touch_nmi_watchdog-imply-touch_softlockup_watchdog-on.patch
make-touch_nmi_watchdog-imply-touch_softlockup_watchdog-on-fix.patch
let-warn_on-warn_on_once-return-the-condition.patch
let-warn_on-warn_on_once-return-the-condition-fix.patch
let-warn_on-warn_on_once-return-the-condition-fix-2.patch
spinlock_debug-dont-recompute-jiffies_per_loop.patch
lockdep-dont-pull-in-includes-when-lockdep-disabled.patch
rtmutex-clean-up-and-remove-some-extra-spinlocks.patch
rtmutex-clean-up-and-remove-some-extra-spinlocks-more.patch
lockdep-print-kernel-version.patch
check-return-value-of-cpu_callback.patch
posix-timers-fix-clock_nanosleep-doesnt-return-the-remaining-time-in-compatibility-mode-2.patch
posix-timers-fix-the-flags-handling-in-posix_cpu_nsleep-2.patch
has_stopped_jobs-cleanup.patch
__dequeue_signal-cleanup.patch
simplify-update_times-avoid-jiffies-jiffies_64-aliasing-problem-2.patch
do_sched_setscheduler-dont-take-tasklist_lock.patch
introduce-is_rt_policy-helper.patch
sched_setscheduler-fix-policy-checks.patch
reparent_to_init-use-has_rt_policy.patch
ntp-move-all-the-ntp-related-code-to-ntpc.patch
sched-force-sbin-init-off-isolated-cpus.patch
sched-remove-unnecessary-sched-group-allocations.patch
sched-remove-unnecessary-sched-group-allocations-fix.patch
lower-migration-thread-stop-machine-prio.patch
sched-generic-sched_group-cpu-power-setup.patch
sched-add-above-background-load-function.patch
mm-implement-swap-prefetching.patch
sched-cleanup-remove-task_t-convert-to-struct-task_struct-prefetch.patch
genirq-convert-the-x86_64-architecture-to-irq-chips.patch
genirq-convert-the-i386-architecture-to-irq-chips.patch
genirq-irq-convert-the-move_irq-flag-from-a-32bit-word-to-a-single-bit.patch
genirq-irq-add-moved_masked_irq.patch
genirq-x86_64-irq-reenable-migrating-irqs-to-other-cpus.patch
genirq-msi-simplify-msi-enable-and-disable.patch
genirq-msi-make-the-msi-boolean-tests-return-either-0-or-1.patch
genirq-msi-implement-helper-functions-read_msi_msg-and-write_msi_msg.patch
genirq-msi-refactor-the-msi_ops.patch
genirq-msi-simplify-the-msi-irq-limit-policy.patch
genirq-irq-add-a-dynamic-irq-creation-api.patch
genirq-ia64-irq-dynamic-irq-support.patch
genirq-i386-irq-dynamic-irq-support.patch
genirq-x86_64-irq-dynamic-irq-support.patch
genirq-msi-make-the-msi-code-irq-based-and-not-vector-based.patch
genirq-x86_64-irq-move-msi-message-composition-into-io_apicc.patch
genirq-i386-irq-move-msi-message-composition-into-io_apicc.patch
genirq-msi-only-build-msi-apicc-on-ia64.patch
genirq-x86_64-irq-remove-the-msi-assumption-that-irq-==-vector.patch
genirq-i386-irq-remove-the-msi-assumption-that-irq-==-vector.patch
genirq-irq-remove-msi-hacks.patch
genirq-irq-generalize-the-check-for-hardirq_bits.patch
genirq-x86_64-irq-make-the-external-irq-handlers-report-their-vector-not-the-irq-number.patch
genirq-x86_64-irq-make-vector_irq-per-cpu.patch
genirq-x86_64-irq-make-vector_irq-per-cpu-warning-fix.patch
genirq-x86_64-irq-kill-gsi_irq_sharing.patch
genirq-x86_64-irq-kill-irq-compression.patch
detect-atomic-counter-underflows.patch
debug-shared-irqs.patch
make-frame_pointer-default=y.patch
mutex-subsystem-synchro-test-module.patch
vdso-print-fatal-signals.patch
vdso-improve-print_fatal_signals-support-by-adding-memory-maps.patch
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