Trent Piepho 5e37661389 [PATCH] symbol_put_addr() locks kernel ...

Even since a previous patch:

Fix race between CONFIG_DEBUG_SLABALLOC and modules
Sun, 27 Jun 2004 17:55:19 +0000 (17:55 +0000)
http://www.kernel.org/git/?p=linux/kernel/git/torvalds/old-2.6-bkcvs.git;a=commit;h=92b3db26d31cf21b70e3c1eadc56c179506d8fbe

The function symbol_put_addr() will deadlock the kernel.

symbol_put_addr() would acquire modlist_lock, then while holding the lock call
two functions kernel_text_address() and module_text_address() which also try
to acquire the same lock.  This deadlocks the kernel of course.

This patch changes symbol_put_addr() to not acquire the modlist_lock, it
doesn't need it since it never looks at the module list directly.  Also, it
now uses core_kernel_text() instead of kernel_text_address().  The latter has
an additional check for addr inside a module, but we don't need to do that
since we call module_text_address() (the same function kernel_text_address
uses) ourselves.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Cc: Zwane Mwaikambo <zwane@fsmlabs.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2006-05-15 11:20:55 -07:00

..

irq

[PATCH] request_irq(): remove warnings from irq probing

2006-04-28 08:33:46 -07:00

power

[PATCH] off-by-1 in kernel/power/main.c

2006-04-28 08:33:46 -07:00

.gitignore

gitignore: ignore more generated files

2006-01-03 11:35:26 +01:00

acct.c

[PATCH] Fix pacct bug in multithreading case.

2006-03-31 12:18:54 -08:00

audit.c

[PATCH] More user space subject labels

2006-05-01 06:10:01 -04:00

audit.h

[PATCH] support for context based audit filtering, part 2

2006-05-01 06:09:36 -04:00

auditfilter.c

[PATCH] More user space subject labels

2006-05-01 06:10:01 -04:00

auditsc.c

[PATCH] Audit Filter Performance

2006-05-01 06:10:07 -04:00

capability.c

[PATCH] refactor capable() to one implementation, add __capable() helper

2006-03-25 08:22:56 -08:00

compat.c

[PATCH] lightweight robust futexes: compat

2006-03-27 08:44:49 -08:00

configs.c

update the email address of Randy Dunlap

2006-01-03 13:37:51 +01:00

cpu.c

[PATCH] Notifier chain update: API changes

2006-03-27 08:44:50 -08:00

cpuset.c

[PATCH] cpuset: memory migration interaction fix

2006-03-31 12:18:55 -08:00

dma.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

exec_domain.c

[PATCH] Fix module refcount leak in __set_personality()

2006-03-24 07:33:30 -08:00

exit.c

[PATCH] move call of audit_free() into do_exit()

2006-05-01 06:06:13 -04:00

extable.c

[PATCH] symbol_put_addr() locks kernel

2006-05-15 11:20:55 -07:00

fork.c

[PATCH] move call of audit_free() into do_exit()

2006-05-01 06:06:13 -04:00

futex_compat.c

[PATCH] futex: check and validate timevals

2006-03-31 12:18:59 -08:00

futex.c

[PATCH] futex: check and validate timevals

2006-03-31 12:18:59 -08:00

hrtimer.c

[PATCH] Remove __devinit and __cpuinit from notifier_call definitions

2006-04-26 08:30:03 -07:00

intermodule.c

[PATCH] missing license tag in intermodule

2006-02-05 11:06:52 -08:00

itimer.c

[PATCH] hrtimers: remove data field

2006-03-26 08:57:03 -08:00

kallsyms.c

[PATCH] fix missing includes

2005-10-30 17:37:32 -08:00

Kconfig.hz

[PATCH] i386: Selectable Frequency of the Timer Interrupt

2005-06-23 09:45:10 -07:00

Kconfig.preempt

[PATCH] sched: voluntary kernel preemption

2005-06-25 16:24:45 -07:00

kexec.c

[PATCH] move capable() to capability.h

2006-01-11 18:42:13 -08:00

kfifo.c

[PATCH] gfp flags annotations - part 1

2005-10-08 15:00:57 -07:00

kmod.c

[PATCH] wait_for_helper: trivial style cleanup

2006-03-28 18:36:41 -08:00

kprobes.c

[PATCH] kprobes: NULL out non-relevant fields in struct kretprobe

2006-04-20 07:54:03 -07:00

ksysfs.c

[PATCH] fix build error if CONFIG_SYSFS=n

2006-03-24 07:33:31 -08:00

kthread.c

[PATCH] find_task_by_pid() needs tasklist_lock

2006-03-25 08:22:57 -08:00

Makefile

[PATCH] lightweight robust futexes: compat

2006-03-27 08:44:49 -08:00

module.c

[PATCH] symbol_put_addr() locks kernel

2006-05-15 11:20:55 -07:00

mutex-debug.c

[PATCH] fix/simplify mutex debugging code

2006-01-11 08:14:16 -08:00

mutex-debug.h

[PATCH] mutex subsystem, debugging code

2006-01-09 15:59:20 -08:00

mutex.c

[PATCH] mutex: trivial whitespace cleanups

2006-01-10 14:27:59 -08:00

mutex.h

[PATCH] mutex subsystem, core

2006-01-09 15:59:19 -08:00

panic.c

[PATCH] the scheduled unexport of panic_timeout

2006-04-11 06:18:40 -07:00

params.c

[PATCH] Change dash2underscore() return value to char

2006-03-28 09:16:03 -08:00

pid.c

[PATCH] pidhash: Refactor the pid hash table

2006-03-31 12:19:00 -08:00

posix-cpu-timers.c

[PATCH] hrtimer: switch clock_nanosleep to hrtimer nanosleep API

2006-01-10 08:01:38 -08:00

posix-timers.c

[PATCH] hrtimers: remove data field

2006-03-26 08:57:03 -08:00

printk.c

BUG_ON() Conversion in kernel/printk.c

2006-04-01 01:21:17 +02:00

profile.c

[PATCH] Remove __devinit and __cpuinit from notifier_call definitions

2006-04-26 08:30:03 -07:00

ptrace.c

ptrace_attach: fix possible deadlock schenario with irqs

2006-05-11 11:08:49 -07:00

rcupdate.c

[PATCH] RCU: introduce rcu_needs_cpu() interface

2006-05-15 11:20:55 -07:00

rcutorture.c

[PATCH] for_each_possible_cpu: fixes for generic part

2006-03-28 09:16:05 -08:00

relay.c

[PATCH] relay: consolidate sendfile() and read() code

2006-03-23 19:58:45 +01:00

resource.c

[PATCH] kernel/resource.c: __check_region(): remove pointless __deprecated

2006-01-10 08:02:02 -08:00

sched.c

[PATCH] Remove __devinitdata from notifier block definitions

2006-04-26 08:27:50 -07:00

seccomp.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

signal.c

[PATCH] fix non-leader exec under ptrace

2006-04-14 08:59:13 -07:00

softirq.c

[PATCH] Remove __devinit and __cpuinit from notifier_call definitions

2006-04-26 08:30:03 -07:00

softlockup.c

[PATCH] Remove __devinit and __cpuinit from notifier_call definitions

2006-04-26 08:30:03 -07:00

spinlock.c

[PATCH] BUILD_LOCK_OPS: cleanup preempt_disable() usage

2006-03-23 07:38:16 -08:00

stop_machine.c

[PATCH] Remove set_fs() in stop_machine()

2006-01-10 08:01:25 -08:00

sys_ni.c

[PATCH] frv: define MMU mode specific syscalls as 'cond_syscall' and clean up unneeded macros

2006-04-11 06:18:33 -07:00

sys.c

[PATCH] Make setsid() more robust

2006-03-31 12:18:59 -08:00

sysctl.c

[PATCH] Range checking in do_proc_dointvec_(userhz_)jiffies_conv

2006-03-24 07:33:20 -08:00

time.c

Fix comments: s/granuality/granularity/

2006-04-01 01:41:22 +02:00

timer.c

[PATCH] Remove __devinit and __cpuinit from notifier_call definitions

2006-04-26 08:30:03 -07:00

uid16.c

[PATCH] Add more prevent_tail_call()

2006-04-19 16:27:18 -07:00

user.c

[PATCH] free_uid() locking improvement

2006-03-24 07:33:20 -08:00

wait.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

workqueue.c

[PATCH] Remove __devinit and __cpuinit from notifier_call definitions

2006-04-26 08:30:03 -07:00