litmus-rt-ext-res.git - LITMUS^RT with extended reservations for Forbidden Zones paper @ RTAS'20

diff options

Diffstat (limited to 'security/apparmor/policy.c')

-rw-r--r--

1 files changed, 23 insertions, 1 deletions


diff --git a/security/apparmor/policy.c b/security/apparmor/policy.c index cf5fd220309b..813200384d97 100644 --- a/security/apparmor/policy.c +++ b/security/apparmor/policy.c
@@ -724,6 +724,8 @@ fail:
724	*/	724	*/
725	static void free_profile(struct aa_profile *profile)	725	static void free_profile(struct aa_profile *profile)
726	{	726	{
		727	struct aa_profile *p;
		728
727	AA_DEBUG("%s(%p)\n", __func__, profile);	729	AA_DEBUG("%s(%p)\n", __func__, profile);
728		730
729	if (!profile)	731	if (!profile)
@@ -751,7 +753,27 @@ static void free_profile(struct aa_profile *profile)
751	aa_put_dfa(profile->xmatch);	753	aa_put_dfa(profile->xmatch);
752	aa_put_dfa(profile->policy.dfa);	754	aa_put_dfa(profile->policy.dfa);
753		755
754	aa_put_profile(profile->replacedby);	756	/* put the profile reference for replacedby, but not via
		757	* put_profile(kref_put).
		758	* replacedby can form a long chain that can result in cascading
		759	* frees that blows the stack because kref_put makes a nested fn
		760	* call (it looks like recursion, with free_profile calling
		761	* free_profile) for each profile in the chain lp#1056078.
		762	*/
		763	for (p = profile->replacedby; p; ) {
		764	if (atomic_dec_and_test(&p->base.count.refcount)) {
		765	/* no more refs on p, grab its replacedby */
		766	struct aa_profile *next = p->replacedby;
		767	/* break the chain */
		768	p->replacedby = NULL;
		769	/* now free p, chain is broken */
		770	free_profile(p);
		771
		772	/* follow up with next profile in the chain */
		773	p = next;
		774	} else
		775	break;
		776	}
755		777
756	kzfree(profile);	778	kzfree(profile);
757	}	779	}

/* sis5595.c - Part of lm_sensors, Linux kernel modules for hardware monitoring Copyright (C) 1998 - 2001 Frodo Looijaard <frodol@dds.nl>, Kyösti Mälkki <kmalkki@cc.hut.fi>, and Mark D. Studebaker <mdsxyz123@yahoo.com> Ported to Linux 2.6 by Aurelien Jarno <aurelien@aurel32.net> with the help of Jean Delvare <khali@linux-fr.org> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* SiS southbridge has a LM78-like chip integrated on the same IC. This driver is a customized copy of lm78.c Supports following revisions: Version PCI ID PCI Revision 1 1039/0008 AF or less 2 1039/0008 B0 or greater Note: these chips contain a 0008 device which is incompatible with the 5595. We recognize these by the presence of the listed "blacklist" PCI ID and refuse to load. NOT SUPPORTED PCI ID BLACKLIST PCI ID 540 0008 0540 550 0008 0550 5513 0008 5511 5581 0008 5597 5582 0008 5597 5597 0008 5597 5598 0008 5597/5598 630 0008 0630 645 0008 0645 730 0008 0730 735 0008 0735 */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/module.h> #include <linux/slab.h> #include <linux/ioport.h> #include <linux/pci.h> #include <linux/platform_device.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <linux/err.h> #include <linux/init.h> #include <linux/jiffies.h> #include <linux/mutex.h> #include <linux/sysfs.h> #include <linux/acpi.h> #include <linux/io.h> /* If force_addr is set to anything different from 0, we forcibly enable the device at the given address. */ static u16 force_addr; module_param(force_addr, ushort, 0); MODULE_PARM_DESC(force_addr, "Initialize the base address of the sensors"); static struct platform_device *pdev; /* Many SIS5595 constants specified below */ /* Length of ISA address segment */ #define SIS5595_EXTENT 8 /* PCI Config Registers */ #define SIS5595_BASE_REG 0x68 #define SIS5595_PIN_REG 0x7A #define SIS5595_ENABLE_REG 0x7B /* Where are the ISA address/data registers relative to the base address */ #define SIS5595_ADDR_REG_OFFSET 5 #define SIS5595_DATA_REG_OFFSET 6 /* The SIS5595 registers */ #define SIS5595_REG_IN_MAX(nr) (0x2b + (nr) * 2) #define SIS5595_REG_IN_MIN(nr) (0x2c + (nr) * 2) #define SIS5595_REG_IN(nr) (0x20 + (nr)) #define SIS5595_REG_FAN_MIN(nr) (0x3b + (nr)) #define SIS5595_REG_FAN(nr) (0x28 + (nr)) /* On the first version of the chip, the temp registers are separate. On the second version, TEMP pin is shared with IN4, configured in PCI register 0x7A. The registers are the same as well. OVER and HYST are really MAX and MIN. */ #define REV2MIN 0xb0 #define SIS5595_REG_TEMP (( data->revision) >= REV2MIN) ? \ SIS5595_REG_IN(4) : 0x27 #define SIS5595_REG_TEMP_OVER (( data->revision) >= REV2MIN) ? \ SIS5595_REG_IN_MAX(4) : 0x39 #define SIS5595_REG_TEMP_HYST (( data->revision) >= REV2MIN) ? \ SIS5595_REG_IN_MIN(4) : 0x3a #define SIS5595_REG_CONFIG 0x40 #define SIS5595_REG_ALARM1 0x41 #define SIS5595_REG_ALARM2 0x42 #define SIS5595_REG_FANDIV 0x47 /* Conversions. Limit checking is only done on the TO_REG variants. */ /* IN: mV, (0V to 4.08V) REG: 16mV/bit */ static inline u8 IN_TO_REG(unsigned long val) { unsigned long nval = SENSORS_LIMIT(val, 0, 4080); return (nval + 8) / 16; } #define IN_FROM_REG(val) ((val) * 16) static inline u8 FAN_TO_REG(long rpm, int div) { if (rpm <= 0) return 255; return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254); } static inline int FAN_FROM_REG(u8 val, int div) { return val==0 ? -1 : val==255 ? 0 : 1350000/(val*div); } /* TEMP: mC (-54.12C to +157.53C) REG: 0.83C/bit + 52.12, two's complement */ static inline int TEMP_FROM_REG(s8 val) { return val * 830 + 52120; } static inline s8 TEMP_TO_REG(int val) { int nval = SENSORS_LIMIT(val, -54120, 157530) ; return nval<0 ? (nval-5212-415)/830 : (nval-5212+415)/830; } /* FAN DIV: 1, 2, 4, or 8 (defaults to 2) REG: 0, 1, 2, or 3 (respectively) (defaults to 1) */ static inline u8 DIV_TO_REG(int val) { return val==8 ? 3 : val==4 ? 2 : val==1 ? 0 : 1; } #define DIV_FROM_REG(val) (1 << (val)) /* For each registered chip, we need to keep some data in memory. The structure is dynamically allocated. */ struct sis5595_data { unsigned short addr; const char *name; struct device *hwmon_dev; struct mutex lock; struct mutex update_lock; char valid; /* !=0 if following fields are valid */ unsigned long last_updated; /* In jiffies */ char maxins; /* == 3 if temp enabled, otherwise == 4 */ u8 revision; /* Reg. value */ u8 in[5]; /* Register value */ u8 in_max[5]; /* Register value */ u8 in_min[5]; /* Register value */ u8 fan[2]; /* Register value */ u8 fan_min[2]; /* Register value */ s8 temp; /* Register value */ s8 temp_over; /* Register value */ s8 temp_hyst; /* Register value */ u8 fan_div[2]; /* Register encoding, shifted right */ u16 alarms; /* Register encoding, combined */ }; static struct pci_dev *s_bridge; /* pointer to the (only) sis5595 */ static int sis5595_probe(struct platform_device *pdev); static int __devexit sis5595_remove(struct platform_device *pdev); static int sis5595_read_value(struct sis5595_data *data, u8 reg); static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value); static struct sis5595_data *sis5595_update_device(struct device *dev); static void sis5595_init_device(struct sis5595_data *data); static struct platform_driver sis5595_driver = { .driver = { .owner = THIS_MODULE, .name = "sis5595", }, .probe = sis5595_probe, .remove = __devexit_p(sis5595_remove), }; /* 4 Voltages */ static ssize_t show_in(struct device *dev, struct device_attribute *da, char *buf) { struct sis5595_data *data = sis5595_update_device(dev); struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr])); } static ssize_t show_in_min(struct device *dev, struct device_attribute *da, char *buf) { struct sis5595_data *data = sis5595_update_device(dev); struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr])); } static ssize_t show_in_max(struct device *dev, struct device_attribute *da, char *buf) { struct sis5595_data *data = sis5595_update_device(dev); struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr])); } static ssize_t set_in_min(struct device *dev, struct device_attribute *da, const char *buf, size_t count) { struct sis5595_data *data = dev_get_drvdata(dev); struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; unsigned long val = simple_strtoul(buf, NULL, 10); mutex_lock(&data->update_lock); data->in_min[nr] = IN_TO_REG(val); sis5595_write_value(data, SIS5595_REG_IN_MIN(nr), data->in_min[nr]); mutex_unlock(&data->update_lock); return count; } static ssize_t set_in_max(struct device *dev, struct device_attribute *da, const char *buf, size_t count) { struct sis5595_data *data = dev_get_drvdata(dev); struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; unsigned long val = simple_strtoul(buf, NULL, 10); mutex_lock(&data->update_lock); data->in_max[nr] = IN_TO_REG(val); sis5595_write_value(data, SIS5595_REG_IN_MAX(nr), data->in_max[nr]); mutex_unlock(&data->update_lock); return count; } #define show_in_offset(offset) \ static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ show_in, NULL, offset); \ static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ show_in_min, set_in_min, offset); \ static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ show_in_max, set_in_max, offset); show_in_offset(0); show_in_offset(1); show_in_offset(2); show_in_offset(3); show_in_offset(4); /* Temperature */ static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char *buf) { struct sis5595_data *data = sis5595_update_device(dev); return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp)); } static ssize_t show_temp_over(struct device *dev, struct device_attribute *attr, char *buf) { struct sis5595_data *data = sis5595_update_device(dev); return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over)); } static ssize_t set_temp_over(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct sis5595_data *data = dev_get_drvdata(dev); long val = simple_strtol(buf, NULL, 10); mutex_lock(&data->update_lock); data->temp_over = TEMP_TO_REG(val); sis5595_write_value(data, SIS5595_REG_TEMP_OVER, data->temp_over); mutex_unlock(&data->update_lock); return count; } static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *attr, char *buf) { struct sis5595_data *data = sis5595_update_device(dev); return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_hyst)); } static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct sis5595_data *data = dev_get_drvdata(dev); long val = simple_strtol(buf, NULL, 10); mutex_lock(&data->update_lock); data->temp_hyst = TEMP_TO_REG(val); sis5595_write_value(data, SIS5595_REG_TEMP_HYST, data->temp_hyst); mutex_unlock(&data->update_lock); return count; } static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL); static DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp_over, set_temp_over); static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp_hyst, set_temp_hyst); /* 2 Fans */ static ssize_t show_fan(struct device *dev, struct device_attribute *da, char *buf) { struct sis5595_data *data = sis5595_update_device(dev); struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], DIV_FROM_REG(data->fan_div[nr])) ); } static ssize_t show_fan_min(struct device *dev, struct device_attribute *da, char *buf) { struct sis5595_data *data = sis5595_update_device(dev); struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])) ); } static ssize_t set_fan_min(struct device *dev, struct device_attribute *da, const char *buf, size_t count) { struct sis5595_data *data = dev_get_drvdata(dev); struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; unsigned long val = simple_strtoul(buf, NULL, 10); mutex_lock(&data->update_lock); data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]); mutex_unlock(&data->update_lock); return count; } static ssize_t show_fan_div(struct device *dev, struct device_attribute *da, char *buf) { struct sis5595_data *data = sis5595_update_device(dev); struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]) ); } /* Note: we save and restore the fan minimum here, because its value is determined in part by the fan divisor. This follows the principle of least surprise; the user doesn't expect the fan minimum to change just because the divisor changed. */ static ssize_t set_fan_div(struct device *dev, struct device_attribute *da, const char *buf, size_t count) { struct sis5595_data *data = dev_get_drvdata(dev); struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; unsigned long min; unsigned long val = simple_strtoul(buf, NULL, 10); int reg; mutex_lock(&data->update_lock); min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])); reg = sis5595_read_value(data, SIS5595_REG_FANDIV); switch (val) { case 1: data->fan_div[nr] = 0; break; case 2: data->fan_div[nr] = 1; break; case 4: data->fan_div[nr] = 2; break; case 8: data->fan_div[nr] = 3; break; default: dev_err(dev, "fan_div value %ld not " "supported. Choose one of 1, 2, 4 or 8!\n", val); mutex_unlock(&data->update_lock); return -EINVAL; } switch (nr) { case 0: reg = (reg & 0xcf) | (data->fan_div[nr] << 4); break; case 1: reg = (reg & 0x3f) | (data->fan_div[nr] << 6); break; } sis5595_write_value(data, SIS5595_REG_FANDIV, reg); data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]); mutex_unlock(&data->update_lock); return count; } #define show_fan_offset(offset) \ static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ show_fan, NULL, offset - 1); \ static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ show_fan_min, set_fan_min, offset - 1); \ static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ show_fan_div, set_fan_div, offset - 1); show_fan_offset(1); show_fan_offset(2); /* Alarms */ static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) { struct sis5595_data *data = sis5595_update_device(dev); return sprintf(buf, "%d\n", data->alarms); } static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); static ssize_t show_alarm(struct device *dev, struct device_attribute *da, char *buf) { struct sis5595_data *data = sis5595_update_device(dev); int nr = to_sensor_dev_attr(da)->index; return sprintf(buf, "%u\n", (data->alarms >> nr) & 1); } static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 15); static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 15); static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf) { struct sis5595_data *data = dev_get_drvdata(dev); return sprintf(buf, "%s\n", data->name); } static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); static struct attribute *sis5595_attributes[] = { &sensor_dev_attr_in0_input.dev_attr.attr, &sensor_dev_attr_in0_min.dev_attr.attr, &sensor_dev_attr_in0_max.dev_attr.attr, &sensor_dev_attr_in0_alarm.dev_attr.attr, &sensor_dev_attr_in1_input.dev_attr.attr, &sensor_dev_attr_in1_min.dev_attr.attr, &sensor_dev_attr_in1_max.dev_attr.attr, &sensor_dev_attr_in1_alarm.dev_attr.attr, &sensor_dev_attr_in2_input.dev_attr.attr, &sensor_dev_attr_in2_min.dev_attr.attr, &sensor_dev_attr_in2_max.dev_attr.attr, &sensor_dev_attr_in2_alarm.dev_attr.attr, &sensor_dev_attr_in3_input.dev_attr.attr, &sensor_dev_attr_in3_min.dev_attr.attr, &sensor_dev_attr_in3_max.dev_attr.attr, &sensor_dev_attr_in3_alarm.dev_attr.attr, &sensor_dev_attr_fan1_input.dev_attr.attr, &sensor_dev_attr_fan1_min.dev_attr.attr, &sensor_dev_attr_fan1_div.dev_attr.attr, &sensor_dev_attr_fan1_alarm.dev_attr.attr,


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