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Linus Torvalds 093a07e2fd Fix locking bug in "acquire_console_semaphore_for_printk()" 
When I cleaned up printk() and split up the printk locking logic in
commit 266c2e0abeca649fa6667a1a427ad1da507c6375 ("Make printk() console
semaphore accesses sensible") I had incorrectly moved the call to
have_callable_console() outside of the console semaphore.

That was buggy.  The console semaphore protects the console_drivers list
that is used by have_callable_console().

Thanks go to Bongani Hlope who saw this as a hang on shutdown and reboot
and bisected the bug to the right commit, and tested this patch. See

	http://lkml.org/lkml/2008/4/11/315

Bisected-and-tested-by: Bongani Hlope <bonganilinux@mweb.co.za>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-15 13:09:54 -07:00
..
irq
genirq: do not leave interupts enabled on free_irq
2008-02-19 10:43:58 +01:00
power
Merge branches 'release' and 'doc' into release
2008-03-13 01:59:53 -04:00
time
clocksource: revert: use init_timer_deferrable for clocksource_watchdog
2008-03-25 20:13:25 +01:00
.gitignore
Update kernel/.gitignore with new auto-generated files
2008-02-09 23:27:01 -08:00
acct.c
bsd_acct: using task_struct->tgid is not right in pid-namespaces
2008-03-24 19:22:20 -07:00
audit_tree.c
Introduce path_put()
2008-02-14 21:13:33 -08:00
audit.c
audit: silence two kerneldoc warnings in kernel/audit.c
2008-03-28 14:45:21 -07:00
audit.h
[PATCH] audit: watching subtrees
2007-10-21 02:37:45 -04:00
auditfilter.c
Introduce path_put()
2008-02-14 21:13:33 -08:00
auditsc.c
[PATCH] Audit: Fix the format type for size_t variables
2008-03-01 07:16:06 -05:00
backtracetest.c
x86: add a simple backtrace test module
2008-01-30 13:33:08 +01:00
capability.c
Add 64-bit capability support to the kernel
2008-02-05 09:44:20 -08:00
cgroup_debug.c
Task Control Groups: simple task cgroup debug info subsystem
2007-10-19 11:53:36 -07:00
cgroup.c
cgroups: include hierarchy ids in /proc/<pid>/cgroup
2008-04-11 08:06:43 -07:00
compat.c
hrtimer: don't modify restart_block->fn in restart functions
2008-02-10 10:48:03 +01:00
configs.c
…
cpu.c
cpu: fix section mismatch warnings for enable_nonboot_cpus
2008-02-08 09:22:41 -08:00
cpuset.c
cpusets: fix obsolete comment
2008-03-05 17:53:33 -08:00
delayacct.c
Add scaled time to taskstats based process accounting
2007-10-18 14:37:28 -07:00
dma.c
whitespace fixes: DMA channel allocator
2007-10-18 14:37:24 -07:00
exec_domain.c
whitespace fixes: execution domains
2007-10-18 14:37:26 -07:00
exit.c
asmlinkage_protect replaces prevent_tail_call
2008-04-10 17:28:26 -07:00
extable.c
module: Don't report discarded init pages as kernel text.
2008-01-29 17:13:18 +11:00
fork.c
memcgroup: fix spurious EBUSY on memory cgroup removal
2008-03-28 14:45:21 -07:00
futex_compat.c
futex_compat __user annotation
2008-03-30 14:18:41 -07:00
futex.c
NULL noise: fs/*, mm/*, kernel/*
2008-03-30 14:18:41 -07:00
hrtimer.c
hrtimer: catch expired CLOCK_REALTIME timers early
2008-02-14 22:08:30 +01:00
itimer.c
ITIMER_REAL: convert to use struct pid
2008-02-08 09:22:29 -08:00
kallsyms.c
remove support for un-needed _extratext section
2008-02-06 10:41:01 -08:00
Kconfig.hz
sched: high-res preemption tick
2008-01-25 21:08:29 +01:00
Kconfig.preempt
rcu: move PREEMPT_RCU config option back under PREEMPT
2008-03-10 18:01:20 -07:00
kexec.c
vmcoreinfo: add "VMCOREINFO_" to all the call for vmcoreinfo_append_str()
2008-02-07 08:42:25 -08:00
kfifo.c
is_power_of_2: kernel/kfifo.c
2007-07-16 09:05:50 -07:00
kmod.c
Dont touch fs_struct in usermodehelper
2008-02-14 21:13:32 -08:00
kprobes.c
kprobes: fix a null pointer bug in register_kretprobe()
2008-03-04 16:35:19 -08:00
ksysfs.c
Kobject: convert remaining kobject_unregister() to kobject_put()
2008-01-24 20:40:40 -08:00
kthread.c
sched: fix, always create kernel threads with normal priority
2008-01-25 21:08:33 +01:00
latencytop.c
sched: latencytop support
2008-01-25 21:08:34 +01:00
lockdep_internals.h
…
lockdep_proc.c
lockdep: Avoid /proc/lockdep & lock_stat infinite output
2007-10-11 22:11:11 +02:00
lockdep.c
Subject: lockdep: include all lock classes in all_lock_classes
2008-02-25 23:03:02 +01:00
Makefile
avoid overflows in kernel/time.c
2008-02-08 09:22:39 -08:00
marker.c
markers: use synchronize_sched()
2008-04-02 15:28:19 -07:00
module.c
modules: warn about suspicious return values from module's ->init() hook
2008-03-10 18:01:20 -07:00
mutex-debug.c
kernel: remove fastcall in kernel/*
2008-02-08 09:22:31 -08:00
mutex-debug.h
…
mutex.c
kernel: remove fastcall in kernel/*
2008-02-08 09:22:31 -08:00
mutex.h
…
notifier.c
kernel/notifier.c should #include <linux/reboot.h>
2008-02-06 10:41:02 -08:00
ns_cgroup.c
cgroups: implement namespace tracking subsystem
2007-10-19 11:53:37 -07:00
nsproxy.c
namespaces: move the IPC namespace under IPC_NS option
2008-02-08 09:22:23 -08:00
panic.c
ACPI: Taint kernel on ACPI table override (format corrected)
2008-02-06 22:07:51 -05:00
params.c
Add new string functions strict_strto* and convert kernel params to use them
2008-02-08 09:22:41 -08:00
pid_namespace.c
namespaces: cleanup the code managed with PID_NS option
2008-02-08 09:22:23 -08:00
pid.c
kernel: remove fastcall in kernel/*
2008-02-08 09:22:31 -08:00
pm_qos_params.c
pm qos infrastructure and interface
2008-02-05 09:44:22 -08:00
posix-cpu-timers.c
Use find_task_by_vpid in posix timers
2008-02-08 09:22:41 -08:00
posix-timers.c
hrtimer: check relative timeouts for overflow
2008-02-14 22:08:30 +01:00
printk.c
Fix locking bug in "acquire_console_semaphore_for_printk()"
2008-04-15 13:09:54 -07:00
profile.c
Nuke a duplicate include from profile.c
2008-02-08 09:22:34 -08:00
ptrace.c
ptrace_check_attach: remove unneeded ->signal != NULL check
2008-02-08 09:22:26 -08:00
rcuclassic.c
Preempt-RCU: implementation
2008-01-25 21:08:24 +01:00
rcupdate.c
rcupdate: fix comment
2008-02-13 16:21:18 -08:00
rcupreempt_trace.c
Preempt-RCU: implementation
2008-01-25 21:08:24 +01:00
rcupreempt.c
rcupreempt: remove never-migrates assumption from rcu_process_callbacks()
2008-02-29 20:21:13 +01:00
rcutorture.c
cpu-hotplug: replace lock_cpu_hotplug() with get_online_cpus()
2008-01-25 21:08:02 +01:00
relay.c
relay: set an spd_release() hook for splice
2008-03-26 12:04:09 +01:00
res_counter.c
Memory Resource Controller use strstrip while parsing arguments
2008-03-04 16:35:09 -08:00
resource.c
[POWERPC] Add arch-specific walk_memory_remove() for 64-bit powerpc
2008-02-08 19:52:48 +11:00
rtmutex_common.h
Don't operate with pid_t in rtmutex tester
2008-02-08 09:22:41 -08:00
rtmutex-debug.c
Don't operate with pid_t in rtmutex tester
2008-02-08 09:22:41 -08:00
rtmutex-debug.h
…
rtmutex-tester.c
Driver core: change sysdev classes to use dynamic kobject names
2008-01-24 20:40:40 -08:00
rtmutex.c
hrtimer: more hrtimer_init_sleeper() fallout.
2008-02-13 15:45:36 +01:00
rtmutex.h
…
rwsem.c
sched: mark rwsem functions as __sched for wchan/profiling
2007-12-18 15:21:13 +01:00
sched_debug.c
sched: improve affine wakeups
2008-03-19 04:27:53 +01:00
sched_fair.c
revert "sched: fix fair sleepers"
2008-04-14 14:26:23 +02:00
sched_idletask.c
sched: high-res preemption tick
2008-01-25 21:08:29 +01:00
sched_rt.c
sched: balance RT task resched only on runqueue
2008-03-07 16:43:00 +01:00
sched_stats.h
sched: clean up kernel/sched_stat.h
2007-11-28 15:52:56 +01:00
sched.c
NOHZ: reevaluate idle sleep length after add_timer_on()
2008-03-26 08:28:55 +01:00
seccomp.c
make seccomp zerocost in schedule
2007-07-16 09:05:50 -07:00
signal.c
freezer vs stopped or traced
2008-03-04 07:59:54 -08:00
softirq.c
rcu: add support for dynamic ticks and preempt rcu
2008-02-29 18:46:50 +01:00
softlockup.c
softlockup: fix task state setting
2008-02-29 18:46:53 +01:00
spinlock.c
spinlock: lockbreak cleanup
2008-01-30 13:31:20 +01:00
srcu.c
make srcu_readers_active() static
2008-02-06 10:41:02 -08:00
stacktrace.c
…
stop_machine.c
stopmachine: semaphore to mutex
2008-02-06 10:41:08 -08:00
sys_ni.c
timerfd: new timerfd API
2008-02-05 09:44:07 -08:00
sys.c
Pidns: make full use of xxx_vnr() calls
2008-02-08 09:22:29 -08:00
sysctl_check.c
constify tables in kernel/sysctl_check.c
2008-02-08 09:22:31 -08:00
sysctl.c
sched: revert load_balance_monitor() changes
2008-03-04 17:54:06 +01:00
taskstats.c
kernel/taskstats.c: fix bogus nlmsg_free()
2007-11-14 18:45:44 -08:00
test_kprobes.c
kprobes: kretprobe user entry-handler
2008-02-06 10:41:11 -08:00
time.c
avoid overflows in kernel/time.c
2008-02-08 09:22:39 -08:00
timeconst.pl
timeconst.pl: correct reversal of USEC_TO_HZ and HZ_TO_USEC
2008-02-12 14:29:26 -08:00
timer.c
NOHZ: reevaluate idle sleep length after add_timer_on()
2008-03-26 08:28:55 +01:00
tsacct.c
Add scaled time to taskstats based process accounting
2007-10-18 14:37:28 -07:00
uid16.c
asmlinkage_protect replaces prevent_tail_call
2008-04-10 17:28:26 -07:00
user_namespace.c
namespaces: cleanup the code managed with the USER_NS option
2008-02-08 09:22:23 -08:00
user.c
sched: rt-group: make rt groups scheduling configurable
2008-02-13 15:45:40 +01:00
utsname_sysctl.c
Isolate the UTS namespace's domainname and hostname back
2007-11-29 09:24:53 -08:00
utsname.c
Fix UTS corruption during clone(CLONE_NEWUTS)
2007-09-19 11:24:17 -07:00
wait.c
kernel: remove fastcall in kernel/*
2008-02-08 09:22:31 -08:00
workqueue.c
workqueue: make delayed_work_timer_fn() static
2008-02-08 09:22:37 -08:00