Linus Torvalds 33e0d57f5d Revert "kernel: make /proc/kallsyms mode 400 to reduce ease of attacking" ... This reverts commit 59365d136d. It turns out that this can break certain existing user land setups. Quoth Sarah Sharp: "On Wednesday, I updated my branch to commit 460781b from linus' tree, and my box would not boot. klogd segfaulted, which stalled the whole system. At first I thought it actually hung the box, but it continued booting after 5 minutes, and I was able to log in. It dropped back to the text console instead of the graphical bootup display for that period of time. dmesg surprisingly still works. I've bisected the problem down to this commit (commit 59365d136d) The box is running klogd 1.5.5ubuntu3 (from Jaunty). Yes, I know that's old. I read the bit in the commit about changing the permissions of kallsyms after boot, but if I can't boot that doesn't help." So let's just keep the old default, and encourage distributions to do the "chmod -r /proc/kallsyms" in their bootup scripts. This is not worth a kernel option to change default behavior, since it's so easily done in user space. Reported-and-bisected-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Cc: Marcus Meissner <meissner@suse.de> Cc: Tejun Heo <tj@kernel.org> Cc: Eugene Teo <eugeneteo@kernel.org> Cc: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2010-11-19 11:54:40 -08:00
..
debug	kdb: fix crash when KDB_BASE_CMD_MAX is exceeded	2010-11-17 13:54:57 -06:00
gcov	llseek: automatically add .llseek fop	2010-10-15 15:53:27 +02:00
irq	Merge branches 'irq-core-for-linus' and 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-10-31 20:40:24 -04:00
power	PM / OPP: Hide OPP configuration when SoCs do not provide an implementation	2010-11-11 01:51:26 +01:00
time	ntp: Clamp PLL update interval	2010-09-09 20:48:37 +02:00
trace	BKL: remove extraneous #include <smp_lock.h>	2010-11-17 08:59:32 -08:00
.gitignore
acct.c
async.c
audit.c	audit: Use rcu for task lookup protection	2010-10-30 08:45:42 -04:00
audit.h	audit: make functions static	2010-10-30 01:42:19 -04:00
audit_tree.c	in untag_chunk() we need to do alloc_chunk() a bit earlier	2010-10-30 02:18:32 -04:00
audit_watch.c	audit: make functions static	2010-10-30 01:42:19 -04:00
auditfilter.c	Audit: add support to match lsm labels on user audit messages	2010-10-30 01:41:57 -04:00
auditsc.c	audit mmap	2010-10-30 08:45:43 -04:00
backtracetest.c
bounds.c
capability.c
cgroup.c	convert cgroup and cpuset	2010-10-29 04:17:06 -04:00
cgroup_freezer.c	cgroup_freezer: update_freezer_state() does incorrect state transitions	2010-10-27 18:03:08 -07:00
compat.c	compat: Make compat_alloc_user_space() incorporate the access_ok()	2010-09-14 16:08:45 -07:00
configs.c	llseek: automatically add .llseek fop	2010-10-15 15:53:27 +02:00
cpu.c
cpuset.c	convert cgroup and cpuset	2010-10-29 04:17:06 -04:00
cred.c	signals: move cred_guard_mutex from task_struct to signal_struct	2010-10-27 18:03:12 -07:00
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c	posix-cpu-timers: workaround to suppress the problems with mt exec	2010-11-05 14:16:03 -07:00
extable.c
fork.c	signals: move cred_guard_mutex from task_struct to signal_struct	2010-10-27 18:03:12 -07:00
freezer.c
futex.c	futex: Address compiler warnings in exit_robust_list	2010-11-10 13:27:50 +01:00
futex_compat.c	futex: Address compiler warnings in exit_robust_list	2010-11-10 13:27:50 +01:00
groups.c	kernel/groups.c: fix integer overflow in groups_search	2010-09-09 18:57:24 -07:00
hrtimer.c	hrtimer: Preserve timer state in remove_hrtimer()	2010-10-14 13:29:59 +02:00
hung_task.c
hw_breakpoint.c	perf, hw_breakpoint: Fix crash in hw_breakpoint creation	2010-10-18 19:58:55 +02:00
irq_work.c	irq_work: Add generic hardirq context callbacks	2010-10-18 19:58:50 +02:00
itimer.c
jump_label.c	jump label: Make arch_jump_label_text_poke_early() optional	2010-10-29 12:56:13 -04:00
kallsyms.c	Revert "kernel: make /proc/kallsyms mode 400 to reduce ease of attacking"	2010-11-19 11:54:40 -08:00
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kexec.c	use clear_page()/copy_page() in favor of memset()/memcpy() on whole pages	2010-10-26 16:52:13 -07:00
kfifo.c	kfifo: fix scatterlist usage	2010-10-01 10:50:58 -07:00
kmod.c
kprobes.c	jump label: Fix error with preempt disable holding mutex	2010-10-29 12:55:55 -04:00
ksysfs.c
kthread.c
latencytop.c	latencytop: fix per task accumulator	2010-11-12 07:55:31 -08:00
lockdep.c	lockdep: Check the depth of subclass	2010-10-18 18:44:26 +02:00
lockdep_internals.h
lockdep_proc.c
lockdep_states.h
Makefile	Merge branch 'core-memblock-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-10-21 18:52:11 -07:00
module.c	(trivial) Fix compiler warning in kernel/modules.c	2010-10-27 20:33:05 +10:30
mutex-debug.c
mutex-debug.h
mutex.c	mutex: Fix annotations to include it in kernel-locking docbook	2010-09-03 08:19:51 +02:00
mutex.h
notifier.c
ns_cgroup.c	cgroup: notify ns_cgroup deprecated	2010-10-27 18:03:09 -07:00
nsproxy.c
padata.c
panic.c
params.c
perf_event.c	perf_events: Fix time tracking in samples	2010-11-10 22:58:39 +01:00
pid.c
pid_namespace.c
pm_qos_params.c	PM / PM QoS: Fix reversed min and max	2010-11-15 22:45:22 +01:00
posix-cpu-timers.c
posix-timers.c
printk.c	capabilities/syslog: open code cap_syslog logic to fix build failure	2010-11-15 15:40:01 -08:00
profile.c	llseek: automatically add .llseek fop	2010-10-15 15:53:27 +02:00
ptrace.c	signals: move cred_guard_mutex from task_struct to signal_struct	2010-10-27 18:03:12 -07:00
range.c	kernel/range.c: fix clean_sort_range() for the case of full array	2010-11-12 07:55:31 -08:00
rcupdate.c	Merge branch 'rcu/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-2.6-rcu into core/rcu	2010-10-07 09:43:11 +02:00
rcutiny.c
rcutiny_plugin.h
rcutorture.c	rcu: fix sparse errors in rcutorture.c	2010-09-23 09:16:42 -07:00
rcutree.c	rcu: using ACCESS_ONCE() to observe the jiffies_stall/rnp->qsmask value	2010-10-07 10:41:06 -07:00
rcutree.h	rcu: Add tracing data to support queueing models	2010-09-23 09:16:53 -07:00
rcutree_plugin.h	rcu: fix _oddness handling of verbose stall warnings	2010-09-02 16:15:30 -07:00
rcutree_trace.c	rcu: Add tracing data to support queueing models	2010-09-23 09:16:53 -07:00
relay.c	Clean up relay_alloc_page_array() slightly by using vzalloc rather than vmalloc and memset	2010-11-05 08:21:34 -07:00
res_counter.c
resource.c	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6	2010-10-28 11:59:52 -07:00
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c	rtmutex-tester: make it build without BKL	2010-10-19 11:29:56 +02:00
rtmutex.c
rtmutex.h
rtmutex_common.h
rwsem.c
sched.c	sched: Fix cross-sched-class wakeup preemption	2010-11-11 14:37:23 +01:00
sched_clock.c
sched_cpupri.c
sched_cpupri.h
sched_debug.c
sched_fair.c	sched: Fix cross-sched-class wakeup preemption	2010-11-11 14:37:23 +01:00
sched_features.h	sched: Remove irq time from available CPU power	2010-10-18 20:52:27 +02:00
sched_idletask.c
sched_rt.c	sched: Do not account irq time to current task	2010-10-18 20:52:26 +02:00
sched_stats.h	sched_stat: Update sched_info_queue/dequeue() code comments	2010-10-24 13:29:01 +02:00
sched_stoptask.c	sched: Fix cross-sched-class wakeup preemption	2010-11-11 14:37:23 +01:00
seccomp.c
semaphore.c
signal.c	signals: annotate lock context change on ptrace_stop()	2010-10-27 18:03:12 -07:00
smp.c	Typedef SMP call function pointer	2010-10-27 17:28:36 +01:00
softirq.c	Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-10-27 18:48:00 -07:00
spinlock.c
srcu.c	kernel: Remove undead ifdef CONFIG_DEBUG_LOCK_ALLOC	2010-09-23 09:14:51 -07:00
stacktrace.c
stop_machine.c	stop_machine: convert cpu notifier to return encapsulate errno value	2010-10-26 16:52:15 -07:00
sys.c	pid: make setpgid() system call use RCU read-side critical section	2010-08-31 17:00:18 -07:00
sys_ni.c	powerpc: define a compat_sys_recv cond_syscall	2010-09-23 17:03:55 +10:00
sysctl.c	kernel/sysctl.c: Fix build failure with !CONFIG_PRINTK	2010-11-16 07:56:09 -08:00
sysctl_binary.c
sysctl_check.c	sysctl: min/max bounds are optional	2010-10-15 14:42:24 -07:00
taskstats.c	taskstats: split fill_pid function	2010-10-27 18:03:17 -07:00
test_kprobes.c	kprobes: Fix selftest to clear flags field for reusing probes	2010-10-14 08:55:27 +02:00
time.c
timeconst.pl
timer.c	irq_work: Add generic hardirq context callbacks	2010-10-18 19:58:50 +02:00
tracepoint.c	jump_label: Use more consistent naming	2010-10-18 19:58:56 +02:00
tsacct.c	taskstats: use real microsecond granularity for CPU times	2010-10-27 18:03:17 -07:00
uid16.c
up.c
user-return-notifier.c
user.c	kernel/user.c: add lock release annotation on free_user()	2010-10-26 16:52:15 -07:00
user_namespace.c
utsname.c
utsname_sysctl.c
wait.c	docbook: add more wait/wake/completion to device-drivers docbook	2010-10-26 17:32:41 -07:00
watchdog.c	watchdog: Fix section mismatch and potential undefined behavior.	2010-11-05 17:45:35 -07:00
workqueue.c	workqueues: s/ON_STACK/ONSTACK/	2010-10-26 16:52:14 -07:00
workqueue_sched.h