From: Greg KH <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
torvalds@linux-foundation.org, stable@vger.kernel.org
Cc: lwn@lwn.net, Jiri Slaby <jslaby@suse.cz>
Subject: Re: Linux 3.5.2
Date: Wed, 15 Aug 2012 08:20:13 -0700 [thread overview]
Message-ID: <20120815152013.GB14327@kroah.com> (raw)
In-Reply-To: <20120815151958.GA14327@kroah.com>
diff --git a/Documentation/security/Yama.txt b/Documentation/security/Yama.txt
index e369de2..dd908cf 100644
--- a/Documentation/security/Yama.txt
+++ b/Documentation/security/Yama.txt
@@ -46,14 +46,13 @@ restrictions, it can call prctl(PR_SET_PTRACER, PR_SET_PTRACER_ANY, ...)
so that any otherwise allowed process (even those in external pid namespaces)
may attach.
-These restrictions do not change how ptrace via PTRACE_TRACEME operates.
-
-The sysctl settings are:
+The sysctl settings (writable only with CAP_SYS_PTRACE) are:
0 - classic ptrace permissions: a process can PTRACE_ATTACH to any other
process running under the same uid, as long as it is dumpable (i.e.
did not transition uids, start privileged, or have called
- prctl(PR_SET_DUMPABLE...) already).
+ prctl(PR_SET_DUMPABLE...) already). Similarly, PTRACE_TRACEME is
+ unchanged.
1 - restricted ptrace: a process must have a predefined relationship
with the inferior it wants to call PTRACE_ATTACH on. By default,
@@ -61,12 +60,13 @@ The sysctl settings are:
classic criteria is also met. To change the relationship, an
inferior can call prctl(PR_SET_PTRACER, debugger, ...) to declare
an allowed debugger PID to call PTRACE_ATTACH on the inferior.
+ Using PTRACE_TRACEME is unchanged.
2 - admin-only attach: only processes with CAP_SYS_PTRACE may use ptrace
- with PTRACE_ATTACH.
+ with PTRACE_ATTACH, or through children calling PTRACE_TRACEME.
-3 - no attach: no processes may use ptrace with PTRACE_ATTACH. Once set,
- this sysctl cannot be changed to a lower value.
+3 - no attach: no processes may use ptrace with PTRACE_ATTACH nor via
+ PTRACE_TRACEME. Once set, this sysctl value cannot be changed.
The original children-only logic was based on the restrictions in grsecurity.
diff --git a/MAINTAINERS b/MAINTAINERS
index fe643e7..0d67d1b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5635,7 +5635,7 @@ F: Documentation/blockdev/ramdisk.txt
F: drivers/block/brd.c
RANDOM NUMBER DRIVER
-M: Matt Mackall <mpm@selenic.com>
+M: Theodore Ts'o" <tytso@mit.edu>
S: Maintained
F: drivers/char/random.c
diff --git a/Makefile b/Makefile
index d7ee1cb..5caa2fa 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 3
PATCHLEVEL = 5
-SUBLEVEL = 1
+SUBLEVEL = 2
EXTRAVERSION =
NAME = Saber-toothed Squirrel
diff --git a/arch/arm/boot/dts/imx53-ard.dts b/arch/arm/boot/dts/imx53-ard.dts
index 5b8eafc..fa95f4a 100644
--- a/arch/arm/boot/dts/imx53-ard.dts
+++ b/arch/arm/boot/dts/imx53-ard.dts
@@ -66,10 +66,30 @@
interrupt-parent = <&gpio2>;
interrupts = <31>;
reg-io-width = <4>;
+ /*
+ * VDD33A and VDDVARIO of LAN9220 are supplied by
+ * SW4_3V3 of LTC3589. Before the regulator driver
+ * for this PMIC is available, we use a fixed dummy
+ * 3V3 regulator to get LAN9220 driver probing work.
+ */
+ vdd33a-supply = <®_3p3v>;
+ vddvario-supply = <®_3p3v>;
smsc,irq-push-pull;
};
};
+ regulators {
+ compatible = "simple-bus";
+
+ reg_3p3v: 3p3v {
+ compatible = "regulator-fixed";
+ regulator-name = "3P3V";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-always-on;
+ };
+ };
+
gpio-keys {
compatible = "gpio-keys";
diff --git a/arch/arm/configs/mxs_defconfig b/arch/arm/configs/mxs_defconfig
index 5406c23..82f42df 100644
--- a/arch/arm/configs/mxs_defconfig
+++ b/arch/arm/configs/mxs_defconfig
@@ -33,7 +33,6 @@ CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_PREEMPT_VOLUNTARY=y
CONFIG_AEABI=y
-CONFIG_DEFAULT_MMAP_MIN_ADDR=65536
CONFIG_AUTO_ZRELADDR=y
CONFIG_FPE_NWFPE=y
CONFIG_NET=y
diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h
index 004c1bc..e4448e1 100644
--- a/arch/arm/include/asm/cacheflush.h
+++ b/arch/arm/include/asm/cacheflush.h
@@ -215,7 +215,9 @@ static inline void vivt_flush_cache_mm(struct mm_struct *mm)
static inline void
vivt_flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end)
{
- if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(vma->vm_mm)))
+ struct mm_struct *mm = vma->vm_mm;
+
+ if (!mm || cpumask_test_cpu(smp_processor_id(), mm_cpumask(mm)))
__cpuc_flush_user_range(start & PAGE_MASK, PAGE_ALIGN(end),
vma->vm_flags);
}
@@ -223,7 +225,9 @@ vivt_flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned
static inline void
vivt_flush_cache_page(struct vm_area_struct *vma, unsigned long user_addr, unsigned long pfn)
{
- if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(vma->vm_mm))) {
+ struct mm_struct *mm = vma->vm_mm;
+
+ if (!mm || cpumask_test_cpu(smp_processor_id(), mm_cpumask(mm))) {
unsigned long addr = user_addr & PAGE_MASK;
__cpuc_flush_user_range(addr, addr + PAGE_SIZE, vma->vm_flags);
}
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index 0d1851c..0f82098 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -244,6 +244,19 @@ svc_preempt:
b 1b
#endif
+__und_fault:
+ @ Correct the PC such that it is pointing at the instruction
+ @ which caused the fault. If the faulting instruction was ARM
+ @ the PC will be pointing at the next instruction, and have to
+ @ subtract 4. Otherwise, it is Thumb, and the PC will be
+ @ pointing at the second half of the Thumb instruction. We
+ @ have to subtract 2.
+ ldr r2, [r0, #S_PC]
+ sub r2, r2, r1
+ str r2, [r0, #S_PC]
+ b do_undefinstr
+ENDPROC(__und_fault)
+
.align 5
__und_svc:
#ifdef CONFIG_KPROBES
@@ -261,25 +274,32 @@ __und_svc:
@
@ r0 - instruction
@
-#ifndef CONFIG_THUMB2_KERNEL
+#ifndef CONFIG_THUMB2_KERNEL
ldr r0, [r4, #-4]
#else
+ mov r1, #2
ldrh r0, [r4, #-2] @ Thumb instruction at LR - 2
cmp r0, #0xe800 @ 32-bit instruction if xx >= 0
- ldrhhs r9, [r4] @ bottom 16 bits
- orrhs r0, r9, r0, lsl #16
+ blo __und_svc_fault
+ ldrh r9, [r4] @ bottom 16 bits
+ add r4, r4, #2
+ str r4, [sp, #S_PC]
+ orr r0, r9, r0, lsl #16
#endif
- adr r9, BSYM(1f)
+ adr r9, BSYM(__und_svc_finish)
mov r2, r4
bl call_fpe
+ mov r1, #4 @ PC correction to apply
+__und_svc_fault:
mov r0, sp @ struct pt_regs *regs
- bl do_undefinstr
+ bl __und_fault
@
@ IRQs off again before pulling preserved data off the stack
@
-1: disable_irq_notrace
+__und_svc_finish:
+ disable_irq_notrace
@
@ restore SPSR and restart the instruction
@@ -423,25 +443,33 @@ __und_usr:
mov r2, r4
mov r3, r5
+ @ r2 = regs->ARM_pc, which is either 2 or 4 bytes ahead of the
+ @ faulting instruction depending on Thumb mode.
+ @ r3 = regs->ARM_cpsr
@
- @ fall through to the emulation code, which returns using r9 if
- @ it has emulated the instruction, or the more conventional lr
- @ if we are to treat this as a real undefined instruction
- @
- @ r0 - instruction
+ @ The emulation code returns using r9 if it has emulated the
+ @ instruction, or the more conventional lr if we are to treat
+ @ this as a real undefined instruction
@
adr r9, BSYM(ret_from_exception)
- adr lr, BSYM(__und_usr_unknown)
+
tst r3, #PSR_T_BIT @ Thumb mode?
- itet eq @ explicit IT needed for the 1f label
- subeq r4, r2, #4 @ ARM instr at LR - 4
- subne r4, r2, #2 @ Thumb instr at LR - 2
-1: ldreqt r0, [r4]
+ bne __und_usr_thumb
+ sub r4, r2, #4 @ ARM instr at LR - 4
+1: ldrt r0, [r4]
#ifdef CONFIG_CPU_ENDIAN_BE8
- reveq r0, r0 @ little endian instruction
+ rev r0, r0 @ little endian instruction
#endif
- beq call_fpe
+ @ r0 = 32-bit ARM instruction which caused the exception
+ @ r2 = PC value for the following instruction (:= regs->ARM_pc)
+ @ r4 = PC value for the faulting instruction
+ @ lr = 32-bit undefined instruction function
+ adr lr, BSYM(__und_usr_fault_32)
+ b call_fpe
+
+__und_usr_thumb:
@ Thumb instruction
+ sub r4, r2, #2 @ First half of thumb instr at LR - 2
#if CONFIG_ARM_THUMB && __LINUX_ARM_ARCH__ >= 6 && CONFIG_CPU_V7
/*
* Thumb-2 instruction handling. Note that because pre-v6 and >= v6 platforms
@@ -455,7 +483,7 @@ __und_usr:
ldr r5, .LCcpu_architecture
ldr r5, [r5]
cmp r5, #CPU_ARCH_ARMv7
- blo __und_usr_unknown
+ blo __und_usr_fault_16 @ 16bit undefined instruction
/*
* The following code won't get run unless the running CPU really is v7, so
* coding round the lack of ldrht on older arches is pointless. Temporarily
@@ -463,15 +491,18 @@ __und_usr:
*/
.arch armv6t2
#endif
-2:
- ARM( ldrht r5, [r4], #2 )
- THUMB( ldrht r5, [r4] )
- THUMB( add r4, r4, #2 )
+2: ldrht r5, [r4]
cmp r5, #0xe800 @ 32bit instruction if xx != 0
- blo __und_usr_unknown
-3: ldrht r0, [r4]
+ blo __und_usr_fault_16 @ 16bit undefined instruction
+3: ldrht r0, [r2]
add r2, r2, #2 @ r2 is PC + 2, make it PC + 4
+ str r2, [sp, #S_PC] @ it's a 2x16bit instr, update
orr r0, r0, r5, lsl #16
+ adr lr, BSYM(__und_usr_fault_32)
+ @ r0 = the two 16-bit Thumb instructions which caused the exception
+ @ r2 = PC value for the following Thumb instruction (:= regs->ARM_pc)
+ @ r4 = PC value for the first 16-bit Thumb instruction
+ @ lr = 32bit undefined instruction function
#if __LINUX_ARM_ARCH__ < 7
/* If the target arch was overridden, change it back: */
@@ -482,17 +513,13 @@ __und_usr:
#endif
#endif /* __LINUX_ARM_ARCH__ < 7 */
#else /* !(CONFIG_ARM_THUMB && __LINUX_ARM_ARCH__ >= 6 && CONFIG_CPU_V7) */
- b __und_usr_unknown
+ b __und_usr_fault_16
#endif
- UNWIND(.fnend )
+ UNWIND(.fnend)
ENDPROC(__und_usr)
- @
- @ fallthrough to call_fpe
- @
-
/*
- * The out of line fixup for the ldrt above.
+ * The out of line fixup for the ldrt instructions above.
*/
.pushsection .fixup, "ax"
.align 2
@@ -524,11 +551,12 @@ ENDPROC(__und_usr)
* NEON handler code.
*
* Emulators may wish to make use of the following registers:
- * r0 = instruction opcode.
- * r2 = PC+4
+ * r0 = instruction opcode (32-bit ARM or two 16-bit Thumb)
+ * r2 = PC value to resume execution after successful emulation
* r9 = normal "successful" return address
- * r10 = this threads thread_info structure.
+ * r10 = this threads thread_info structure
* lr = unrecognised instruction return address
+ * IRQs disabled, FIQs enabled.
*/
@
@ Fall-through from Thumb-2 __und_usr
@@ -659,12 +687,17 @@ ENTRY(no_fp)
mov pc, lr
ENDPROC(no_fp)
-__und_usr_unknown:
- enable_irq
+__und_usr_fault_32:
+ mov r1, #4
+ b 1f
+__und_usr_fault_16:
+ mov r1, #2
+1: enable_irq
mov r0, sp
adr lr, BSYM(ret_from_exception)
- b do_undefinstr
-ENDPROC(__und_usr_unknown)
+ b __und_fault
+ENDPROC(__und_usr_fault_32)
+ENDPROC(__und_usr_fault_16)
.align 5
__pabt_usr:
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 19c95ea..693b744 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -247,6 +247,7 @@ void machine_shutdown(void)
void machine_halt(void)
{
machine_shutdown();
+ local_irq_disable();
while (1);
}
@@ -268,6 +269,7 @@ void machine_restart(char *cmd)
/* Whoops - the platform was unable to reboot. Tell the user! */
printk("Reboot failed -- System halted\n");
+ local_irq_disable();
while (1);
}
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 2c7217d..ea73045 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -563,7 +563,8 @@ void smp_send_stop(void)
cpumask_copy(&mask, cpu_online_mask);
cpumask_clear_cpu(smp_processor_id(), &mask);
- smp_cross_call(&mask, IPI_CPU_STOP);
+ if (!cpumask_empty(&mask))
+ smp_cross_call(&mask, IPI_CPU_STOP);
/* Wait up to one second for other CPUs to stop */
timeout = USEC_PER_SEC;
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 3647170..c7cae6b 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -370,18 +370,10 @@ static int call_undef_hook(struct pt_regs *regs, unsigned int instr)
asmlinkage void __exception do_undefinstr(struct pt_regs *regs)
{
- unsigned int correction = thumb_mode(regs) ? 2 : 4;
unsigned int instr;
siginfo_t info;
void __user *pc;
- /*
- * According to the ARM ARM, PC is 2 or 4 bytes ahead,
- * depending whether we're in Thumb mode or not.
- * Correct this offset.
- */
- regs->ARM_pc -= correction;
-
pc = (void __user *)instruction_pointer(regs);
if (processor_mode(regs) == SVC_MODE) {
diff --git a/arch/arm/mach-imx/clk-imx31.c b/arch/arm/mach-imx/clk-imx31.c
index c9a06d8..4bcb3a1 100644
--- a/arch/arm/mach-imx/clk-imx31.c
+++ b/arch/arm/mach-imx/clk-imx31.c
@@ -129,7 +129,7 @@ int __init mx31_clocks_init(unsigned long fref)
clk_register_clkdev(clk[nfc], NULL, "mxc_nand.0");
clk_register_clkdev(clk[ipu_gate], NULL, "ipu-core");
clk_register_clkdev(clk[ipu_gate], NULL, "mx3_sdc_fb");
- clk_register_clkdev(clk[kpp_gate], "kpp", NULL);
+ clk_register_clkdev(clk[kpp_gate], NULL, "imx-keypad");
clk_register_clkdev(clk[usb_div_post], "per", "mxc-ehci.0");
clk_register_clkdev(clk[usb_gate], "ahb", "mxc-ehci.0");
clk_register_clkdev(clk[ipg], "ipg", "mxc-ehci.0");
diff --git a/arch/arm/mach-imx/clk-imx51-imx53.c b/arch/arm/mach-imx/clk-imx51-imx53.c
index a2200c7..ae3d802 100644
--- a/arch/arm/mach-imx/clk-imx51-imx53.c
+++ b/arch/arm/mach-imx/clk-imx51-imx53.c
@@ -293,6 +293,7 @@ static void __init mx5_clocks_common_init(unsigned long rate_ckil,
clk_prepare_enable(clk[aips_tz2]); /* fec */
clk_prepare_enable(clk[spba]);
clk_prepare_enable(clk[emi_fast_gate]); /* fec */
+ clk_prepare_enable(clk[emi_slow_gate]); /* eim */
clk_prepare_enable(clk[tmax1]);
clk_prepare_enable(clk[tmax2]); /* esdhc2, fec */
clk_prepare_enable(clk[tmax3]); /* esdhc1, esdhc4 */
diff --git a/arch/arm/mach-pxa/raumfeld.c b/arch/arm/mach-pxa/raumfeld.c
index 5905ed1..d89d87ae 100644
--- a/arch/arm/mach-pxa/raumfeld.c
+++ b/arch/arm/mach-pxa/raumfeld.c
@@ -953,12 +953,12 @@ static struct i2c_board_info raumfeld_connector_i2c_board_info __initdata = {
static struct eeti_ts_platform_data eeti_ts_pdata = {
.irq_active_high = 1,
+ .irq_gpio = GPIO_TOUCH_IRQ,
};
static struct i2c_board_info raumfeld_controller_i2c_board_info __initdata = {
.type = "eeti_ts",
.addr = 0x0a,
- .irq = PXA_GPIO_TO_IRQ(GPIO_TOUCH_IRQ),
.platform_data = &eeti_ts_pdata,
};
diff --git a/arch/arm/mm/tlb-v7.S b/arch/arm/mm/tlb-v7.S
index 845f461..c202113 100644
--- a/arch/arm/mm/tlb-v7.S
+++ b/arch/arm/mm/tlb-v7.S
@@ -38,11 +38,19 @@ ENTRY(v7wbi_flush_user_tlb_range)
dsb
mov r0, r0, lsr #PAGE_SHIFT @ align address
mov r1, r1, lsr #PAGE_SHIFT
+#ifdef CONFIG_ARM_ERRATA_720789
+ mov r3, #0
+#else
asid r3, r3 @ mask ASID
+#endif
orr r0, r3, r0, lsl #PAGE_SHIFT @ Create initial MVA
mov r1, r1, lsl #PAGE_SHIFT
1:
+#ifdef CONFIG_ARM_ERRATA_720789
+ ALT_SMP(mcr p15, 0, r0, c8, c3, 3) @ TLB invalidate U MVA all ASID (shareable)
+#else
ALT_SMP(mcr p15, 0, r0, c8, c3, 1) @ TLB invalidate U MVA (shareable)
+#endif
ALT_UP(mcr p15, 0, r0, c8, c7, 1) @ TLB invalidate U MVA
add r0, r0, #PAGE_SZ
@@ -67,7 +75,11 @@ ENTRY(v7wbi_flush_kern_tlb_range)
mov r0, r0, lsl #PAGE_SHIFT
mov r1, r1, lsl #PAGE_SHIFT
1:
+#ifdef CONFIG_ARM_ERRATA_720789
+ ALT_SMP(mcr p15, 0, r0, c8, c3, 3) @ TLB invalidate U MVA all ASID (shareable)
+#else
ALT_SMP(mcr p15, 0, r0, c8, c3, 1) @ TLB invalidate U MVA (shareable)
+#endif
ALT_UP(mcr p15, 0, r0, c8, c7, 1) @ TLB invalidate U MVA
add r0, r0, #PAGE_SZ
cmp r0, r1
diff --git a/arch/arm/vfp/entry.S b/arch/arm/vfp/entry.S
index 4fa9903..cc926c9 100644
--- a/arch/arm/vfp/entry.S
+++ b/arch/arm/vfp/entry.S
@@ -7,18 +7,20 @@
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
- *
- * Basic entry code, called from the kernel's undefined instruction trap.
- * r0 = faulted instruction
- * r5 = faulted PC+4
- * r9 = successful return
- * r10 = thread_info structure
- * lr = failure return
*/
#include <asm/thread_info.h>
#include <asm/vfpmacros.h>
#include "../kernel/entry-header.S"
+@ VFP entry point.
+@
+@ r0 = instruction opcode (32-bit ARM or two 16-bit Thumb)
+@ r2 = PC value to resume execution after successful emulation
+@ r9 = normal "successful" return address
+@ r10 = this threads thread_info structure
+@ lr = unrecognised instruction return address
+@ IRQs disabled.
+@
ENTRY(do_vfp)
#ifdef CONFIG_PREEMPT
ldr r4, [r10, #TI_PREEMPT] @ get preempt count
diff --git a/arch/arm/vfp/vfphw.S b/arch/arm/vfp/vfphw.S
index 2d30c7f..3a0efaa 100644
--- a/arch/arm/vfp/vfphw.S
+++ b/arch/arm/vfp/vfphw.S
@@ -61,13 +61,13 @@
@ VFP hardware support entry point.
@
-@ r0 = faulted instruction
-@ r2 = faulted PC+4
-@ r9 = successful return
+@ r0 = instruction opcode (32-bit ARM or two 16-bit Thumb)
+@ r2 = PC value to resume execution after successful emulation
+@ r9 = normal "successful" return address
@ r10 = vfp_state union
@ r11 = CPU number
-@ lr = failure return
-
+@ lr = unrecognised instruction return address
+@ IRQs enabled.
ENTRY(vfp_support_entry)
DBGSTR3 "instr %08x pc %08x state %p", r0, r2, r10
@@ -161,9 +161,12 @@ vfp_hw_state_valid:
@ exception before retrying branch
@ out before setting an FPEXC that
@ stops us reading stuff
- VFPFMXR FPEXC, r1 @ restore FPEXC last
- sub r2, r2, #4
- str r2, [sp, #S_PC] @ retry the instruction
+ VFPFMXR FPEXC, r1 @ Restore FPEXC last
+ sub r2, r2, #4 @ Retry current instruction - if Thumb
+ str r2, [sp, #S_PC] @ mode it's two 16-bit instructions,
+ @ else it's one 32-bit instruction, so
+ @ always subtract 4 from the following
+ @ instruction address.
#ifdef CONFIG_PREEMPT
get_thread_info r10
ldr r4, [r10, #TI_PREEMPT] @ get preempt count
diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c
index 58696192..fb849d0 100644
--- a/arch/arm/vfp/vfpmodule.c
+++ b/arch/arm/vfp/vfpmodule.c
@@ -457,10 +457,16 @@ static int vfp_pm_suspend(void)
/* disable, just in case */
fmxr(FPEXC, fmrx(FPEXC) & ~FPEXC_EN);
+ } else if (vfp_current_hw_state[ti->cpu]) {
+#ifndef CONFIG_SMP
+ fmxr(FPEXC, fpexc | FPEXC_EN);
+ vfp_save_state(vfp_current_hw_state[ti->cpu], fpexc);
+ fmxr(FPEXC, fpexc);
+#endif
}
/* clear any information we had about last context state */
- memset(vfp_current_hw_state, 0, sizeof(vfp_current_hw_state));
+ vfp_current_hw_state[ti->cpu] = NULL;
return 0;
}
diff --git a/arch/ia64/include/asm/atomic.h b/arch/ia64/include/asm/atomic.h
index 7d91166..6e6fe18 100644
--- a/arch/ia64/include/asm/atomic.h
+++ b/arch/ia64/include/asm/atomic.h
@@ -17,8 +17,8 @@
#include <asm/intrinsics.h>
-#define ATOMIC_INIT(i) ((atomic_t) { (i) })
-#define ATOMIC64_INIT(i) ((atomic64_t) { (i) })
+#define ATOMIC_INIT(i) { (i) }
+#define ATOMIC64_INIT(i) { (i) }
#define atomic_read(v) (*(volatile int *)&(v)->counter)
#define atomic64_read(v) (*(volatile long *)&(v)->counter)
diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
index 5c3e088..1034884 100644
--- a/arch/ia64/kernel/irq_ia64.c
+++ b/arch/ia64/kernel/irq_ia64.c
@@ -23,7 +23,6 @@
#include <linux/ioport.h>
#include <linux/kernel_stat.h>
#include <linux/ptrace.h>
-#include <linux/random.h> /* for rand_initialize_irq() */
#include <linux/signal.h>
#include <linux/smp.h>
#include <linux/threads.h>
diff --git a/arch/sh/mm/fault.c b/arch/sh/mm/fault.c
index 1fc25d8..3bdc1ad 100644
--- a/arch/sh/mm/fault.c
+++ b/arch/sh/mm/fault.c
@@ -58,11 +58,15 @@ static void show_pte(struct mm_struct *mm, unsigned long addr)
{
pgd_t *pgd;
- if (mm)
+ if (mm) {
pgd = mm->pgd;
- else
+ } else {
pgd = get_TTB();
+ if (unlikely(!pgd))
+ pgd = swapper_pg_dir;
+ }
+
printk(KERN_ALERT "pgd = %p\n", pgd);
pgd += pgd_index(addr);
printk(KERN_ALERT "[%08lx] *pgd=%0*Lx", addr,
diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
index 1f84794..73ef56c 100644
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -219,7 +219,7 @@ void __init arch_init_ideal_nops(void)
ideal_nops = intel_nops;
#endif
}
-
+ break;
default:
#ifdef CONFIG_X86_64
ideal_nops = k8_nops;
diff --git a/arch/x86/syscalls/syscall_64.tbl b/arch/x86/syscalls/syscall_64.tbl
index 51171ae..29aed7a 100644
--- a/arch/x86/syscalls/syscall_64.tbl
+++ b/arch/x86/syscalls/syscall_64.tbl
@@ -318,7 +318,7 @@
309 common getcpu sys_getcpu
310 64 process_vm_readv sys_process_vm_readv
311 64 process_vm_writev sys_process_vm_writev
-312 64 kcmp sys_kcmp
+312 common kcmp sys_kcmp
#
# x32-specific system call numbers start at 512 to avoid cache impact
diff --git a/block/blk-ioc.c b/block/blk-ioc.c
index 893b800..fab4cdd 100644
--- a/block/blk-ioc.c
+++ b/block/blk-ioc.c
@@ -244,6 +244,7 @@ int create_task_io_context(struct task_struct *task, gfp_t gfp_flags, int node)
/* initialize */
atomic_long_set(&ioc->refcount, 1);
+ atomic_set(&ioc->nr_tasks, 1);
atomic_set(&ioc->active_ref, 1);
spin_lock_init(&ioc->lock);
INIT_RADIX_TREE(&ioc->icq_tree, GFP_ATOMIC | __GFP_HIGH);
diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
index 0734086..bbac51e 100644
--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@ -442,7 +442,7 @@ static int acpi_cpu_soft_notify(struct notifier_block *nfb,
/* Normal CPU soft online event */
} else {
acpi_processor_ppc_has_changed(pr, 0);
- acpi_processor_cst_has_changed(pr);
+ acpi_processor_hotplug(pr);
acpi_processor_reevaluate_tstate(pr, action);
acpi_processor_tstate_has_changed(pr);
}
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 693187d..774c31d 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -21,8 +21,6 @@ struct workqueue_struct *virtblk_wq;
struct virtio_blk
{
- spinlock_t lock;
-
struct virtio_device *vdev;
struct virtqueue *vq;
@@ -65,7 +63,7 @@ static void blk_done(struct virtqueue *vq)
unsigned int len;
unsigned long flags;
- spin_lock_irqsave(&vblk->lock, flags);
+ spin_lock_irqsave(vblk->disk->queue->queue_lock, flags);
while ((vbr = virtqueue_get_buf(vblk->vq, &len)) != NULL) {
int error;
@@ -99,7 +97,7 @@ static void blk_done(struct virtqueue *vq)
}
/* In case queue is stopped waiting for more buffers. */
blk_start_queue(vblk->disk->queue);
- spin_unlock_irqrestore(&vblk->lock, flags);
+ spin_unlock_irqrestore(vblk->disk->queue->queue_lock, flags);
}
static bool do_req(struct request_queue *q, struct virtio_blk *vblk,
@@ -431,7 +429,6 @@ static int __devinit virtblk_probe(struct virtio_device *vdev)
goto out_free_index;
}
- spin_lock_init(&vblk->lock);
vblk->vdev = vdev;
vblk->sg_elems = sg_elems;
sg_init_table(vblk->sg, vblk->sg_elems);
@@ -456,7 +453,7 @@ static int __devinit virtblk_probe(struct virtio_device *vdev)
goto out_mempool;
}
- q = vblk->disk->queue = blk_init_queue(do_virtblk_request, &vblk->lock);
+ q = vblk->disk->queue = blk_init_queue(do_virtblk_request, NULL);
if (!q) {
err = -ENOMEM;
goto out_put_disk;
@@ -576,30 +573,20 @@ static void __devexit virtblk_remove(struct virtio_device *vdev)
{
struct virtio_blk *vblk = vdev->priv;
int index = vblk->index;
- struct virtblk_req *vbr;
- unsigned long flags;
/* Prevent config work handler from accessing the device. */
mutex_lock(&vblk->config_lock);
vblk->config_enable = false;
mutex_unlock(&vblk->config_lock);
+ del_gendisk(vblk->disk);
+ blk_cleanup_queue(vblk->disk->queue);
+
/* Stop all the virtqueues. */
vdev->config->reset(vdev);
flush_work(&vblk->config_work);
- del_gendisk(vblk->disk);
-
- /* Abort requests dispatched to driver. */
- spin_lock_irqsave(&vblk->lock, flags);
- while ((vbr = virtqueue_detach_unused_buf(vblk->vq))) {
- __blk_end_request_all(vbr->req, -EIO);
- mempool_free(vbr, vblk->pool);
- }
- spin_unlock_irqrestore(&vblk->lock, flags);
-
- blk_cleanup_queue(vblk->disk->queue);
put_disk(vblk->disk);
mempool_destroy(vblk->pool);
vdev->config->del_vqs(vdev);
diff --git a/drivers/char/mspec.c b/drivers/char/mspec.c
index 8b78750..845f97f 100644
--- a/drivers/char/mspec.c
+++ b/drivers/char/mspec.c
@@ -283,7 +283,7 @@ mspec_mmap(struct file *file, struct vm_area_struct *vma,
vdata->flags = flags;
vdata->type = type;
spin_lock_init(&vdata->lock);
- vdata->refcnt = ATOMIC_INIT(1);
+ atomic_set(&vdata->refcnt, 1);
vma->vm_private_data = vdata;
vma->vm_flags |= (VM_IO | VM_RESERVED | VM_PFNMAP | VM_DONTEXPAND);
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 4ec04a7..d98b2a6 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -125,21 +125,26 @@
* The current exported interfaces for gathering environmental noise
* from the devices are:
*
+ * void add_device_randomness(const void *buf, unsigned int size);
* void add_input_randomness(unsigned int type, unsigned int code,
* unsigned int value);
- * void add_interrupt_randomness(int irq);
+ * void add_interrupt_randomness(int irq, int irq_flags);
* void add_disk_randomness(struct gendisk *disk);
*
+ * add_device_randomness() is for adding data to the random pool that
+ * is likely to differ between two devices (or possibly even per boot).
+ * This would be things like MAC addresses or serial numbers, or the
+ * read-out of the RTC. This does *not* add any actual entropy to the
+ * pool, but it initializes the pool to different values for devices
+ * that might otherwise be identical and have very little entropy
+ * available to them (particularly common in the embedded world).
+ *
* add_input_randomness() uses the input layer interrupt timing, as well as
* the event type information from the hardware.
*
- * add_interrupt_randomness() uses the inter-interrupt timing as random
- * inputs to the entropy pool. Note that not all interrupts are good
- * sources of randomness! For example, the timer interrupts is not a
- * good choice, because the periodicity of the interrupts is too
- * regular, and hence predictable to an attacker. Network Interface
- * Controller interrupts are a better measure, since the timing of the
- * NIC interrupts are more unpredictable.
+ * add_interrupt_randomness() uses the interrupt timing as random
+ * inputs to the entropy pool. Using the cycle counters and the irq source
+ * as inputs, it feeds the randomness roughly once a second.
*
* add_disk_randomness() uses what amounts to the seek time of block
* layer request events, on a per-disk_devt basis, as input to the
@@ -248,6 +253,8 @@
#include <linux/percpu.h>
#include <linux/cryptohash.h>
#include <linux/fips.h>
+#include <linux/ptrace.h>
+#include <linux/kmemcheck.h>
#ifdef CONFIG_GENERIC_HARDIRQS
# include <linux/irq.h>
@@ -256,8 +263,12 @@
#include <asm/processor.h>
#include <asm/uaccess.h>
#include <asm/irq.h>
+#include <asm/irq_regs.h>
#include <asm/io.h>
+#define CREATE_TRACE_POINTS
+#include <trace/events/random.h>
+
/*
* Configuration information
*/
@@ -266,6 +277,8 @@
#define SEC_XFER_SIZE 512
#define EXTRACT_SIZE 10
+#define LONGS(x) (((x) + sizeof(unsigned long) - 1)/sizeof(unsigned long))
+
/*
* The minimum number of bits of entropy before we wake up a read on
* /dev/random. Should be enough to do a significant reseed.
@@ -420,8 +433,10 @@ struct entropy_store {
/* read-write data: */
spinlock_t lock;
unsigned add_ptr;
+ unsigned input_rotate;
int entropy_count;
- int input_rotate;
+ int entropy_total;
+ unsigned int initialized:1;
__u8 last_data[EXTRACT_SIZE];
};
@@ -454,6 +469,10 @@ static struct entropy_store nonblocking_pool = {
.pool = nonblocking_pool_data
};
+static __u32 const twist_table[8] = {
+ 0x00000000, 0x3b6e20c8, 0x76dc4190, 0x4db26158,
+ 0xedb88320, 0xd6d6a3e8, 0x9b64c2b0, 0xa00ae278 };
+
/*
* This function adds bytes into the entropy "pool". It does not
* update the entropy estimate. The caller should call
@@ -464,29 +483,24 @@ static struct entropy_store nonblocking_pool = {
* it's cheap to do so and helps slightly in the expected case where
* the entropy is concentrated in the low-order bits.
*/
-static void mix_pool_bytes_extract(struct entropy_store *r, const void *in,
- int nbytes, __u8 out[64])
+static void _mix_pool_bytes(struct entropy_store *r, const void *in,
+ int nbytes, __u8 out[64])
{
- static __u32 const twist_table[8] = {
- 0x00000000, 0x3b6e20c8, 0x76dc4190, 0x4db26158,
- 0xedb88320, 0xd6d6a3e8, 0x9b64c2b0, 0xa00ae278 };
unsigned long i, j, tap1, tap2, tap3, tap4, tap5;
int input_rotate;
int wordmask = r->poolinfo->poolwords - 1;
const char *bytes = in;
__u32 w;
- unsigned long flags;
- /* Taps are constant, so we can load them without holding r->lock. */
tap1 = r->poolinfo->tap1;
tap2 = r->poolinfo->tap2;
tap3 = r->poolinfo->tap3;
tap4 = r->poolinfo->tap4;
tap5 = r->poolinfo->tap5;
- spin_lock_irqsave(&r->lock, flags);
- input_rotate = r->input_rotate;
- i = r->add_ptr;
+ smp_rmb();
+ input_rotate = ACCESS_ONCE(r->input_rotate);
+ i = ACCESS_ONCE(r->add_ptr);
/* mix one byte at a time to simplify size handling and churn faster */
while (nbytes--) {
@@ -513,19 +527,61 @@ static void mix_pool_bytes_extract(struct entropy_store *r, const void *in,
input_rotate += i ? 7 : 14;
}
- r->input_rotate = input_rotate;
- r->add_ptr = i;
+ ACCESS_ONCE(r->input_rotate) = input_rotate;
+ ACCESS_ONCE(r->add_ptr) = i;
+ smp_wmb();
if (out)
for (j = 0; j < 16; j++)
((__u32 *)out)[j] = r->pool[(i - j) & wordmask];
+}
+
+static void __mix_pool_bytes(struct entropy_store *r, const void *in,
+ int nbytes, __u8 out[64])
+{
+ trace_mix_pool_bytes_nolock(r->name, nbytes, _RET_IP_);
+ _mix_pool_bytes(r, in, nbytes, out);
+}
+
+static void mix_pool_bytes(struct entropy_store *r, const void *in,
+ int nbytes, __u8 out[64])
+{
+ unsigned long flags;
+ trace_mix_pool_bytes(r->name, nbytes, _RET_IP_);
+ spin_lock_irqsave(&r->lock, flags);
+ _mix_pool_bytes(r, in, nbytes, out);
spin_unlock_irqrestore(&r->lock, flags);
}
-static void mix_pool_bytes(struct entropy_store *r, const void *in, int bytes)
+struct fast_pool {
+ __u32 pool[4];
+ unsigned long last;
+ unsigned short count;
+ unsigned char rotate;
+ unsigned char last_timer_intr;
+};
+
+/*
+ * This is a fast mixing routine used by the interrupt randomness
+ * collector. It's hardcoded for an 128 bit pool and assumes that any
+ * locks that might be needed are taken by the caller.
+ */
+static void fast_mix(struct fast_pool *f, const void *in, int nbytes)
{
- mix_pool_bytes_extract(r, in, bytes, NULL);
+ const char *bytes = in;
+ __u32 w;
+ unsigned i = f->count;
+ unsigned input_rotate = f->rotate;
+
+ while (nbytes--) {
+ w = rol32(*bytes++, input_rotate & 31) ^ f->pool[i & 3] ^
+ f->pool[(i + 1) & 3];
+ f->pool[i & 3] = (w >> 3) ^ twist_table[w & 7];
+ input_rotate += (i++ & 3) ? 7 : 14;
+ }
+ f->count = i;
+ f->rotate = input_rotate;
}
/*
@@ -533,30 +589,38 @@ static void mix_pool_bytes(struct entropy_store *r, const void *in, int bytes)
*/
static void credit_entropy_bits(struct entropy_store *r, int nbits)
{
- unsigned long flags;
- int entropy_count;
+ int entropy_count, orig;
if (!nbits)
return;
- spin_lock_irqsave(&r->lock, flags);
-
DEBUG_ENT("added %d entropy credits to %s\n", nbits, r->name);
- entropy_count = r->entropy_count;
+retry:
+ entropy_count = orig = ACCESS_ONCE(r->entropy_count);
entropy_count += nbits;
+
if (entropy_count < 0) {
DEBUG_ENT("negative entropy/overflow\n");
entropy_count = 0;
} else if (entropy_count > r->poolinfo->POOLBITS)
entropy_count = r->poolinfo->POOLBITS;
- r->entropy_count = entropy_count;
+ if (cmpxchg(&r->entropy_count, orig, entropy_count) != orig)
+ goto retry;
+
+ if (!r->initialized && nbits > 0) {
+ r->entropy_total += nbits;
+ if (r->entropy_total > 128)
+ r->initialized = 1;
+ }
+
+ trace_credit_entropy_bits(r->name, nbits, entropy_count,
+ r->entropy_total, _RET_IP_);
/* should we wake readers? */
if (r == &input_pool && entropy_count >= random_read_wakeup_thresh) {
wake_up_interruptible(&random_read_wait);
kill_fasync(&fasync, SIGIO, POLL_IN);
}
- spin_unlock_irqrestore(&r->lock, flags);
}
/*********************************************************************
@@ -572,42 +636,24 @@ struct timer_rand_state {
unsigned dont_count_entropy:1;
};
-#ifndef CONFIG_GENERIC_HARDIRQS
-
-static struct timer_rand_state *irq_timer_state[NR_IRQS];
-
-static struct timer_rand_state *get_timer_rand_state(unsigned int irq)
-{
- return irq_timer_state[irq];
-}
-
-static void set_timer_rand_state(unsigned int irq,
- struct timer_rand_state *state)
-{
- irq_timer_state[irq] = state;
-}
-
-#else
-
-static struct timer_rand_state *get_timer_rand_state(unsigned int irq)
-{
- struct irq_desc *desc;
-
- desc = irq_to_desc(irq);
-
- return desc->timer_rand_state;
-}
-
-static void set_timer_rand_state(unsigned int irq,
- struct timer_rand_state *state)
+/*
+ * Add device- or boot-specific data to the input and nonblocking
+ * pools to help initialize them to unique values.
+ *
+ * None of this adds any entropy, it is meant to avoid the
+ * problem of the nonblocking pool having similar initial state
+ * across largely identical devices.
+ */
+void add_device_randomness(const void *buf, unsigned int size)
{
- struct irq_desc *desc;
+ unsigned long time = get_cycles() ^ jiffies;
- desc = irq_to_desc(irq);
-
- desc->timer_rand_state = state;
+ mix_pool_bytes(&input_pool, buf, size, NULL);
+ mix_pool_bytes(&input_pool, &time, sizeof(time), NULL);
+ mix_pool_bytes(&nonblocking_pool, buf, size, NULL);
+ mix_pool_bytes(&nonblocking_pool, &time, sizeof(time), NULL);
}
-#endif
+EXPORT_SYMBOL(add_device_randomness);
static struct timer_rand_state input_timer_state;
@@ -637,13 +683,9 @@ static void add_timer_randomness(struct timer_rand_state *state, unsigned num)
goto out;
sample.jiffies = jiffies;
-
- /* Use arch random value, fall back to cycles */
- if (!arch_get_random_int(&sample.cycles))
- sample.cycles = get_cycles();
-
+ sample.cycles = get_cycles();
sample.num = num;
- mix_pool_bytes(&input_pool, &sample, sizeof(sample));
+ mix_pool_bytes(&input_pool, &sample, sizeof(sample), NULL);
/*
* Calculate number of bits of randomness we probably added.
@@ -700,17 +742,48 @@ void add_input_randomness(unsigned int type, unsigned int code,
}
EXPORT_SYMBOL_GPL(add_input_randomness);
-void add_interrupt_randomness(int irq)
+static DEFINE_PER_CPU(struct fast_pool, irq_randomness);
+
+void add_interrupt_randomness(int irq, int irq_flags)
{
- struct timer_rand_state *state;
+ struct entropy_store *r;
+ struct fast_pool *fast_pool = &__get_cpu_var(irq_randomness);
+ struct pt_regs *regs = get_irq_regs();
+ unsigned long now = jiffies;
+ __u32 input[4], cycles = get_cycles();
+
+ input[0] = cycles ^ jiffies;
+ input[1] = irq;
+ if (regs) {
+ __u64 ip = instruction_pointer(regs);
+ input[2] = ip;
+ input[3] = ip >> 32;
+ }
- state = get_timer_rand_state(irq);
+ fast_mix(fast_pool, input, sizeof(input));
- if (state == NULL)
+ if ((fast_pool->count & 1023) &&
+ !time_after(now, fast_pool->last + HZ))
return;
- DEBUG_ENT("irq event %d\n", irq);
- add_timer_randomness(state, 0x100 + irq);
+ fast_pool->last = now;
+
+ r = nonblocking_pool.initialized ? &input_pool : &nonblocking_pool;
+ __mix_pool_bytes(r, &fast_pool->pool, sizeof(fast_pool->pool), NULL);
+ /*
+ * If we don't have a valid cycle counter, and we see
+ * back-to-back timer interrupts, then skip giving credit for
+ * any entropy.
+ */
+ if (cycles == 0) {
+ if (irq_flags & __IRQF_TIMER) {
+ if (fast_pool->last_timer_intr)
+ return;
+ fast_pool->last_timer_intr = 1;
+ } else
+ fast_pool->last_timer_intr = 0;
+ }
+ credit_entropy_bits(r, 1);
}
#ifdef CONFIG_BLOCK
@@ -742,7 +815,7 @@ static ssize_t extract_entropy(struct entropy_store *r, void *buf,
*/
static void xfer_secondary_pool(struct entropy_store *r, size_t nbytes)
{
- __u32 tmp[OUTPUT_POOL_WORDS];
+ __u32 tmp[OUTPUT_POOL_WORDS];
if (r->pull && r->entropy_count < nbytes * 8 &&
r->entropy_count < r->poolinfo->POOLBITS) {
@@ -761,7 +834,7 @@ static void xfer_secondary_pool(struct entropy_store *r, size_t nbytes)
bytes = extract_entropy(r->pull, tmp, bytes,
random_read_wakeup_thresh / 8, rsvd);
- mix_pool_bytes(r, tmp, bytes);
+ mix_pool_bytes(r, tmp, bytes, NULL);
credit_entropy_bits(r, bytes*8);
}
}
@@ -820,13 +893,19 @@ static size_t account(struct entropy_store *r, size_t nbytes, int min,
static void extract_buf(struct entropy_store *r, __u8 *out)
{
int i;
- __u32 hash[5], workspace[SHA_WORKSPACE_WORDS];
+ union {
+ __u32 w[5];
+ unsigned long l[LONGS(EXTRACT_SIZE)];
+ } hash;
+ __u32 workspace[SHA_WORKSPACE_WORDS];
__u8 extract[64];
+ unsigned long flags;
/* Generate a hash across the pool, 16 words (512 bits) at a time */
- sha_init(hash);
+ sha_init(hash.w);
+ spin_lock_irqsave(&r->lock, flags);
for (i = 0; i < r->poolinfo->poolwords; i += 16)
- sha_transform(hash, (__u8 *)(r->pool + i), workspace);
+ sha_transform(hash.w, (__u8 *)(r->pool + i), workspace);
/*
* We mix the hash back into the pool to prevent backtracking
@@ -837,13 +916,14 @@ static void extract_buf(struct entropy_store *r, __u8 *out)
* brute-forcing the feedback as hard as brute-forcing the
* hash.
*/
- mix_pool_bytes_extract(r, hash, sizeof(hash), extract);
+ __mix_pool_bytes(r, hash.w, sizeof(hash.w), extract);
+ spin_unlock_irqrestore(&r->lock, flags);
/*
* To avoid duplicates, we atomically extract a portion of the
* pool while mixing, and hash one final time.
*/
- sha_transform(hash, extract, workspace);
+ sha_transform(hash.w, extract, workspace);
memset(extract, 0, sizeof(extract));
memset(workspace, 0, sizeof(workspace));
@@ -852,20 +932,32 @@ static void extract_buf(struct entropy_store *r, __u8 *out)
* pattern, we fold it in half. Thus, we always feed back
* twice as much data as we output.
*/
- hash[0] ^= hash[3];
- hash[1] ^= hash[4];
- hash[2] ^= rol32(hash[2], 16);
- memcpy(out, hash, EXTRACT_SIZE);
- memset(hash, 0, sizeof(hash));
+ hash.w[0] ^= hash.w[3];
+ hash.w[1] ^= hash.w[4];
+ hash.w[2] ^= rol32(hash.w[2], 16);
+
+ /*
+ * If we have a architectural hardware random number
+ * generator, mix that in, too.
+ */
+ for (i = 0; i < LONGS(EXTRACT_SIZE); i++) {
+ unsigned long v;
+ if (!arch_get_random_long(&v))
+ break;
+ hash.l[i] ^= v;
+ }
+
+ memcpy(out, &hash, EXTRACT_SIZE);
+ memset(&hash, 0, sizeof(hash));
}
static ssize_t extract_entropy(struct entropy_store *r, void *buf,
- size_t nbytes, int min, int reserved)
+ size_t nbytes, int min, int reserved)
{
ssize_t ret = 0, i;
__u8 tmp[EXTRACT_SIZE];
- unsigned long flags;
+ trace_extract_entropy(r->name, nbytes, r->entropy_count, _RET_IP_);
xfer_secondary_pool(r, nbytes);
nbytes = account(r, nbytes, min, reserved);
@@ -873,6 +965,8 @@ static ssize_t extract_entropy(struct entropy_store *r, void *buf,
extract_buf(r, tmp);
if (fips_enabled) {
+ unsigned long flags;
+
spin_lock_irqsave(&r->lock, flags);
if (!memcmp(tmp, r->last_data, EXTRACT_SIZE))
panic("Hardware RNG duplicated output!\n");
@@ -898,6 +992,7 @@ static ssize_t extract_entropy_user(struct entropy_store *r, void __user *buf,
ssize_t ret = 0, i;
__u8 tmp[EXTRACT_SIZE];
+ trace_extract_entropy_user(r->name, nbytes, r->entropy_count, _RET_IP_);
xfer_secondary_pool(r, nbytes);
nbytes = account(r, nbytes, 0, 0);
@@ -931,17 +1026,35 @@ static ssize_t extract_entropy_user(struct entropy_store *r, void __user *buf,
/*
* This function is the exported kernel interface. It returns some
- * number of good random numbers, suitable for seeding TCP sequence
- * numbers, etc.
+ * number of good random numbers, suitable for key generation, seeding
+ * TCP sequence numbers, etc. It does not use the hw random number
+ * generator, if available; use get_random_bytes_arch() for that.
*/
void get_random_bytes(void *buf, int nbytes)
{
+ extract_entropy(&nonblocking_pool, buf, nbytes, 0, 0);
+}
+EXPORT_SYMBOL(get_random_bytes);
+
+/*
+ * This function will use the architecture-specific hardware random
+ * number generator if it is available. The arch-specific hw RNG will
+ * almost certainly be faster than what we can do in software, but it
+ * is impossible to verify that it is implemented securely (as
+ * opposed, to, say, the AES encryption of a sequence number using a
+ * key known by the NSA). So it's useful if we need the speed, but
+ * only if we're willing to trust the hardware manufacturer not to
+ * have put in a back door.
+ */
+void get_random_bytes_arch(void *buf, int nbytes)
+{
char *p = buf;
+ trace_get_random_bytes(nbytes, _RET_IP_);
while (nbytes) {
unsigned long v;
int chunk = min(nbytes, (int)sizeof(unsigned long));
-
+
if (!arch_get_random_long(&v))
break;
@@ -950,9 +1063,11 @@ void get_random_bytes(void *buf, int nbytes)
nbytes -= chunk;
}
- extract_entropy(&nonblocking_pool, p, nbytes, 0, 0);
+ if (nbytes)
+ extract_entropy(&nonblocking_pool, p, nbytes, 0, 0);
}
-EXPORT_SYMBOL(get_random_bytes);
+EXPORT_SYMBOL(get_random_bytes_arch);
+
/*
* init_std_data - initialize pool with system data
@@ -966,23 +1081,30 @@ EXPORT_SYMBOL(get_random_bytes);
static void init_std_data(struct entropy_store *r)
{
int i;
- ktime_t now;
- unsigned long flags;
+ ktime_t now = ktime_get_real();
+ unsigned long rv;
- spin_lock_irqsave(&r->lock, flags);
r->entropy_count = 0;
- spin_unlock_irqrestore(&r->lock, flags);
-
- now = ktime_get_real();
- mix_pool_bytes(r, &now, sizeof(now));
- for (i = r->poolinfo->POOLBYTES; i > 0; i -= sizeof flags) {
- if (!arch_get_random_long(&flags))
+ r->entropy_total = 0;
+ mix_pool_bytes(r, &now, sizeof(now), NULL);
+ for (i = r->poolinfo->POOLBYTES; i > 0; i -= sizeof(rv)) {
+ if (!arch_get_random_long(&rv))
break;
- mix_pool_bytes(r, &flags, sizeof(flags));
+ mix_pool_bytes(r, &rv, sizeof(rv), NULL);
}
- mix_pool_bytes(r, utsname(), sizeof(*(utsname())));
+ mix_pool_bytes(r, utsname(), sizeof(*(utsname())), NULL);
}
+/*
+ * Note that setup_arch() may call add_device_randomness()
+ * long before we get here. This allows seeding of the pools
+ * with some platform dependent data very early in the boot
+ * process. But it limits our options here. We must use
+ * statically allocated structures that already have all
+ * initializations complete at compile time. We should also
+ * take care not to overwrite the precious per platform data
+ * we were given.
+ */
static int rand_initialize(void)
{
init_std_data(&input_pool);
@@ -992,24 +1114,6 @@ static int rand_initialize(void)
}
module_init(rand_initialize);
-void rand_initialize_irq(int irq)
-{
- struct timer_rand_state *state;
-
- state = get_timer_rand_state(irq);
-
- if (state)
- return;
-
- /*
- * If kzalloc returns null, we just won't use that entropy
- * source.
- */
- state = kzalloc(sizeof(struct timer_rand_state), GFP_KERNEL);
- if (state)
- set_timer_rand_state(irq, state);
-}
-
#ifdef CONFIG_BLOCK
void rand_initialize_disk(struct gendisk *disk)
{
@@ -1117,7 +1221,7 @@ write_pool(struct entropy_store *r, const char __user *buffer, size_t count)
count -= bytes;
p += bytes;
- mix_pool_bytes(r, buf, bytes);
+ mix_pool_bytes(r, buf, bytes, NULL);
cond_resched();
}
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index 153980b..b298158 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -6,6 +6,7 @@
#include <linux/dmi.h>
#include <linux/efi.h>
#include <linux/bootmem.h>
+#include <linux/random.h>
#include <asm/dmi.h>
/*
@@ -111,6 +112,8 @@ static int __init dmi_walk_early(void (*decode)(const struct dmi_header *,
dmi_table(buf, dmi_len, dmi_num, decode, NULL);
+ add_device_randomness(buf, dmi_len);
+
dmi_iounmap(buf, dmi_len);
return 0;
}
diff --git a/drivers/firmware/pcdp.c b/drivers/firmware/pcdp.c
index 51e0e2d..a330492 100644
--- a/drivers/firmware/pcdp.c
+++ b/drivers/firmware/pcdp.c
@@ -95,7 +95,7 @@ efi_setup_pcdp_console(char *cmdline)
if (efi.hcdp == EFI_INVALID_TABLE_ADDR)
return -ENODEV;
- pcdp = ioremap(efi.hcdp, 4096);
+ pcdp = early_ioremap(efi.hcdp, 4096);
printk(KERN_INFO "PCDP: v%d at 0x%lx\n", pcdp->rev, efi.hcdp);
if (strstr(cmdline, "console=hcdp")) {
@@ -131,6 +131,6 @@ efi_setup_pcdp_console(char *cmdline)
}
out:
- iounmap(pcdp);
+ early_iounmap(pcdp, 4096);
return rc;
}
diff --git a/drivers/hid/hid-chicony.c b/drivers/hid/hid-chicony.c
index b99af34..a2abb8e 100644
--- a/drivers/hid/hid-chicony.c
+++ b/drivers/hid/hid-chicony.c
@@ -60,6 +60,7 @@ static int ch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
static const struct hid_device_id ch_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
{ }
};
MODULE_DEVICE_TABLE(hid, ch_devices);
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 4c87276..1f6957c 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1521,10 +1521,12 @@ static const struct hid_device_id hid_have_special_driver[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
{ HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4) },
{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011) },
diff --git a/drivers/hid/hid-cypress.c b/drivers/hid/hid-cypress.c
index 2f0be4c..9e43aac 100644
--- a/drivers/hid/hid-cypress.c
+++ b/drivers/hid/hid-cypress.c
@@ -129,6 +129,8 @@ static const struct hid_device_id cp_devices[] = {
.driver_data = CP_RDESC_SWAPPED_MIN_MAX },
{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3),
.driver_data = CP_RDESC_SWAPPED_MIN_MAX },
+ { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4),
+ .driver_data = CP_RDESC_SWAPPED_MIN_MAX },
{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE),
.driver_data = CP_2WHEEL_MOUSE_HACK },
{ }
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 3203923..9d9bb9a 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -208,6 +208,7 @@
#define USB_DEVICE_ID_CHICONY_MULTI_TOUCH 0xb19d
#define USB_DEVICE_ID_CHICONY_WIRELESS 0x0618
#define USB_DEVICE_ID_CHICONY_WIRELESS2 0x1123
+#define USB_DEVICE_ID_CHICONY_AK1D 0x1125
#define USB_VENDOR_ID_CHUNGHWAT 0x2247
#define USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH 0x0001
@@ -237,6 +238,7 @@
#define USB_DEVICE_ID_CYPRESS_BARCODE_1 0xde61
#define USB_DEVICE_ID_CYPRESS_BARCODE_2 0xde64
#define USB_DEVICE_ID_CYPRESS_BARCODE_3 0xbca1
+#define USB_DEVICE_ID_CYPRESS_BARCODE_4 0xed81
#define USB_DEVICE_ID_CYPRESS_TRUETOUCH 0xc001
#define USB_VENDOR_ID_DEALEXTREAME 0x10c5
@@ -573,6 +575,9 @@
#define USB_VENDOR_ID_NINTENDO 0x057e
#define USB_DEVICE_ID_NINTENDO_WIIMOTE 0x0306
+#define USB_VENDOR_ID_NOVATEK 0x0603
+#define USB_DEVICE_ID_NOVATEK_PCT 0x0600
+
#define USB_VENDOR_ID_NTRIG 0x1b96
#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN 0x0001
#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1 0x0003
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index c6655a5..348550a 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -962,6 +962,11 @@ static const struct hid_device_id mt_devices[] = {
MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
USB_DEVICE_ID_PANABOARD_UBT880) },
+ /* Novatek Panel */
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
+ USB_DEVICE_ID_NOVATEK_PCT) },
+
/* PenMount panels */
{ .driver_data = MT_CLS_CONFIDENCE,
MT_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index c703d53..4dc7136 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -40,11 +40,27 @@
* Note that newer firmware allows querying device for maximum useable
* coordinates.
*/
+#define XMIN 0
+#define XMAX 6143
+#define YMIN 0
+#define YMAX 6143
#define XMIN_NOMINAL 1472
#define XMAX_NOMINAL 5472
#define YMIN_NOMINAL 1408
#define YMAX_NOMINAL 4448
+/* Size in bits of absolute position values reported by the hardware */
+#define ABS_POS_BITS 13
+
+/*
+ * Any position values from the hardware above the following limits are
+ * treated as "wrapped around negative" values that have been truncated to
+ * the 13-bit reporting range of the hardware. These are just reasonable
+ * guesses and can be adjusted if hardware is found that operates outside
+ * of these parameters.
+ */
+#define X_MAX_POSITIVE (((1 << ABS_POS_BITS) + XMAX) / 2)
+#define Y_MAX_POSITIVE (((1 << ABS_POS_BITS) + YMAX) / 2)
/*****************************************************************************
* Stuff we need even when we do not want native Synaptics support
@@ -555,6 +571,12 @@ static int synaptics_parse_hw_state(const unsigned char buf[],
hw->right = (buf[0] & 0x02) ? 1 : 0;
}
+ /* Convert wrap-around values to negative */
+ if (hw->x > X_MAX_POSITIVE)
+ hw->x -= 1 << ABS_POS_BITS;
+ if (hw->y > Y_MAX_POSITIVE)
+ hw->y -= 1 << ABS_POS_BITS;
+
return 0;
}
diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c
index 004bc1b..869e057 100644
--- a/drivers/input/tablet/wacom_wac.c
+++ b/drivers/input/tablet/wacom_wac.c
@@ -248,7 +248,7 @@ static int wacom_graphire_irq(struct wacom_wac *wacom)
input_report_abs(input, ABS_X, le16_to_cpup((__le16 *)&data[2]));
input_report_abs(input, ABS_Y, le16_to_cpup((__le16 *)&data[4]));
if (wacom->tool[0] != BTN_TOOL_MOUSE) {
- input_report_abs(input, ABS_PRESSURE, data[6] | ((data[7] & 0x01) << 8));
+ input_report_abs(input, ABS_PRESSURE, data[6] | ((data[7] & 0x03) << 8));
input_report_key(input, BTN_TOUCH, data[1] & 0x01);
input_report_key(input, BTN_STYLUS, data[1] & 0x02);
input_report_key(input, BTN_STYLUS2, data[1] & 0x04);
diff --git a/drivers/input/touchscreen/eeti_ts.c b/drivers/input/touchscreen/eeti_ts.c
index 503c709..908407e 100644
--- a/drivers/input/touchscreen/eeti_ts.c
+++ b/drivers/input/touchscreen/eeti_ts.c
@@ -48,7 +48,7 @@ struct eeti_ts_priv {
struct input_dev *input;
struct work_struct work;
struct mutex mutex;
- int irq, irq_active_high;
+ int irq_gpio, irq, irq_active_high;
};
#define EETI_TS_BITDEPTH (11)
@@ -62,7 +62,7 @@ struct eeti_ts_priv {
static inline int eeti_ts_irq_active(struct eeti_ts_priv *priv)
{
- return gpio_get_value(irq_to_gpio(priv->irq)) == priv->irq_active_high;
+ return gpio_get_value(priv->irq_gpio) == priv->irq_active_high;
}
static void eeti_ts_read(struct work_struct *work)
@@ -157,7 +157,7 @@ static void eeti_ts_close(struct input_dev *dev)
static int __devinit eeti_ts_probe(struct i2c_client *client,
const struct i2c_device_id *idp)
{
- struct eeti_ts_platform_data *pdata;
+ struct eeti_ts_platform_data *pdata = client->dev.platform_data;
struct eeti_ts_priv *priv;
struct input_dev *input;
unsigned int irq_flags;
@@ -199,9 +199,12 @@ static int __devinit eeti_ts_probe(struct i2c_client *client,
priv->client = client;
priv->input = input;
- priv->irq = client->irq;
+ priv->irq_gpio = pdata->irq_gpio;
+ priv->irq = gpio_to_irq(pdata->irq_gpio);
- pdata = client->dev.platform_data;
+ err = gpio_request_one(pdata->irq_gpio, GPIOF_IN, client->name);
+ if (err < 0)
+ goto err1;
if (pdata)
priv->irq_active_high = pdata->irq_active_high;
@@ -215,13 +218,13 @@ static int __devinit eeti_ts_probe(struct i2c_client *client,
err = input_register_device(input);
if (err)
- goto err1;
+ goto err2;
err = request_irq(priv->irq, eeti_ts_isr, irq_flags,
client->name, priv);
if (err) {
dev_err(&client->dev, "Unable to request touchscreen IRQ.\n");
- goto err2;
+ goto err3;
}
/*
@@ -233,9 +236,11 @@ static int __devinit eeti_ts_probe(struct i2c_client *client,
device_init_wakeup(&client->dev, 0);
return 0;
-err2:
+err3:
input_unregister_device(input);
input = NULL; /* so we dont try to free it below */
+err2:
+ gpio_free(pdata->irq_gpio);
err1:
input_free_device(input);
kfree(priv);
diff --git a/drivers/isdn/hardware/mISDN/avmfritz.c b/drivers/isdn/hardware/mISDN/avmfritz.c
index c08fc60..fa6ca47 100644
--- a/drivers/isdn/hardware/mISDN/avmfritz.c
+++ b/drivers/isdn/hardware/mISDN/avmfritz.c
@@ -449,7 +449,8 @@ hdlc_fill_fifo(struct bchannel *bch)
{
struct fritzcard *fc = bch->hw;
struct hdlc_hw *hdlc;
- int count, fs, cnt = 0, idx, fillempty = 0;
+ int count, fs, cnt = 0, idx;
+ bool fillempty = false;
u8 *p;
u32 *ptr, val, addr;
@@ -462,7 +463,7 @@ hdlc_fill_fifo(struct bchannel *bch)
return;
count = fs;
p = bch->fill;
- fillempty = 1;
+ fillempty = true;
} else {
count = bch->tx_skb->len - bch->tx_idx;
if (count <= 0)
@@ -477,7 +478,7 @@ hdlc_fill_fifo(struct bchannel *bch)
hdlc->ctrl.sr.cmd |= HDLC_CMD_XME;
}
ptr = (u32 *)p;
- if (fillempty) {
+ if (!fillempty) {
pr_debug("%s.B%d: %d/%d/%d", fc->name, bch->nr, count,
bch->tx_idx, bch->tx_skb->len);
bch->tx_idx += count;
diff --git a/drivers/isdn/mISDN/layer2.c b/drivers/isdn/mISDN/layer2.c
index 0dc8abc..949cabb 100644
--- a/drivers/isdn/mISDN/layer2.c
+++ b/drivers/isdn/mISDN/layer2.c
@@ -2222,7 +2222,7 @@ create_l2(struct mISDNchannel *ch, u_int protocol, u_long options, int tei,
InitWin(l2);
l2->l2m.fsm = &l2fsm;
if (test_bit(FLG_LAPB, &l2->flag) ||
- test_bit(FLG_PTP, &l2->flag) ||
+ test_bit(FLG_FIXED_TEI, &l2->flag) ||
test_bit(FLG_LAPD_NET, &l2->flag))
l2->l2m.state = ST_L2_4;
else
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index cacd008..53aec45 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -2428,7 +2428,10 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr, int *skipp
/* There is nowhere to write, so all non-sync
* drives must be failed - so we are finished
*/
- sector_t rv = max_sector - sector_nr;
+ sector_t rv;
+ if (min_bad > 0)
+ max_sector = sector_nr + min_bad;
+ rv = max_sector - sector_nr;
*skipped = 1;
put_buf(r1_bio);
return rv;
diff --git a/drivers/media/rc/ene_ir.c b/drivers/media/rc/ene_ir.c
index bef5296..647dd95 100644
--- a/drivers/media/rc/ene_ir.c
+++ b/drivers/media/rc/ene_ir.c
@@ -1018,6 +1018,8 @@ static int ene_probe(struct pnp_dev *pnp_dev, const struct pnp_device_id *id)
spin_lock_init(&dev->hw_lock);
+ dev->hw_io = pnp_port_start(pnp_dev, 0);
+
pnp_set_drvdata(pnp_dev, dev);
dev->pnp_dev = pnp_dev;
@@ -1072,7 +1074,6 @@ static int ene_probe(struct pnp_dev *pnp_dev, const struct pnp_device_id *id)
/* claim the resources */
error = -EBUSY;
- dev->hw_io = pnp_port_start(pnp_dev, 0);
if (!request_region(dev->hw_io, ENE_IO_SIZE, ENE_DRIVER_NAME)) {
dev->hw_io = -1;
dev->irq = -1;
diff --git a/drivers/media/video/m5mols/m5mols_controls.c b/drivers/media/video/m5mols/m5mols_controls.c
index 392a028..fdbc205 100644
--- a/drivers/media/video/m5mols/m5mols_controls.c
+++ b/drivers/media/video/m5mols/m5mols_controls.c
@@ -527,8 +527,8 @@ static const struct v4l2_ctrl_ops m5mols_ctrl_ops = {
/* Supported manual ISO values */
static const s64 iso_qmenu[] = {
- /* AE_ISO: 0x01...0x07 */
- 50, 100, 200, 400, 800, 1600, 3200
+ /* AE_ISO: 0x01...0x07 (ISO: 50...3200) */
+ 50000, 100000, 200000, 400000, 800000, 1600000, 3200000
};
/* Supported Exposure Bias values, -2.0EV...+2.0EV */
diff --git a/drivers/media/video/videobuf-dma-contig.c b/drivers/media/video/videobuf-dma-contig.c
index b6b5cc1..358f4c0 100644
--- a/drivers/media/video/videobuf-dma-contig.c
+++ b/drivers/media/video/videobuf-dma-contig.c
@@ -359,32 +359,43 @@ static int __videobuf_mmap_mapper(struct videobuf_queue *q,
size = vma->vm_end - vma->vm_start;
size = (size < mem->size) ? size : mem->size;
- if (!mem->cached)
+ if (!mem->cached) {
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-
- pos = (unsigned long)mem->vaddr;
-
- while (size > 0) {
- page = virt_to_page((void *)pos);
- if (NULL == page) {
- dev_err(q->dev, "mmap: virt_to_page failed\n");
- __videobuf_dc_free(q->dev, mem);
- goto error;
- }
- retval = vm_insert_page(vma, start, page);
+ retval = remap_pfn_range(vma, vma->vm_start,
+ mem->dma_handle >> PAGE_SHIFT,
+ size, vma->vm_page_prot);
if (retval) {
- dev_err(q->dev, "mmap: insert failed with error %d\n",
- retval);
- __videobuf_dc_free(q->dev, mem);
+ dev_err(q->dev, "mmap: remap failed with error %d. ",
+ retval);
+ dma_free_coherent(q->dev, mem->size,
+ mem->vaddr, mem->dma_handle);
goto error;
}
- start += PAGE_SIZE;
- pos += PAGE_SIZE;
+ } else {
+ pos = (unsigned long)mem->vaddr;
+
+ while (size > 0) {
+ page = virt_to_page((void *)pos);
+ if (NULL == page) {
+ dev_err(q->dev, "mmap: virt_to_page failed\n");
+ __videobuf_dc_free(q->dev, mem);
+ goto error;
+ }
+ retval = vm_insert_page(vma, start, page);
+ if (retval) {
+ dev_err(q->dev, "mmap: insert failed with error %d\n",
+ retval);
+ __videobuf_dc_free(q->dev, mem);
+ goto error;
+ }
+ start += PAGE_SIZE;
+ pos += PAGE_SIZE;
- if (size > PAGE_SIZE)
- size -= PAGE_SIZE;
- else
- size = 0;
+ if (size > PAGE_SIZE)
+ size -= PAGE_SIZE;
+ else
+ size = 0;
+ }
}
vma->vm_ops = &videobuf_vm_ops;
diff --git a/drivers/mfd/ab3100-core.c b/drivers/mfd/ab3100-core.c
index 1efad20..1287645 100644
--- a/drivers/mfd/ab3100-core.c
+++ b/drivers/mfd/ab3100-core.c
@@ -409,8 +409,6 @@ static irqreturn_t ab3100_irq_handler(int irq, void *data)
u32 fatevent;
int err;
- add_interrupt_randomness(irq);
-
err = ab3100_get_register_page_interruptible(ab3100, AB3100_EVENTA1,
event_regs, 3);
if (err)
@@ -933,9 +931,6 @@ static int __devinit ab3100_probe(struct i2c_client *client,
err = request_threaded_irq(client->irq, NULL, ab3100_irq_handler,
IRQF_ONESHOT, "ab3100-core", ab3100);
- /* This real unpredictable IRQ is of course sampled for entropy */
- rand_initialize_irq(client->irq);
-
if (err)
goto exit_no_irq;
diff --git a/drivers/mfd/ezx-pcap.c b/drivers/mfd/ezx-pcap.c
index 43a76c4..db662e2 100644
--- a/drivers/mfd/ezx-pcap.c
+++ b/drivers/mfd/ezx-pcap.c
@@ -202,7 +202,7 @@ static void pcap_isr_work(struct work_struct *work)
}
local_irq_enable();
ezx_pcap_write(pcap, PCAP_REG_MSR, pcap->msr);
- } while (gpio_get_value(irq_to_gpio(pcap->spi->irq)));
+ } while (gpio_get_value(pdata->gpio));
}
static void pcap_irq_handler(unsigned int irq, struct irq_desc *desc)
diff --git a/drivers/mfd/wm831x-otp.c b/drivers/mfd/wm831x-otp.c
index f742745..b90f3e0 100644
--- a/drivers/mfd/wm831x-otp.c
+++ b/drivers/mfd/wm831x-otp.c
@@ -18,6 +18,7 @@
#include <linux/bcd.h>
#include <linux/delay.h>
#include <linux/mfd/core.h>
+#include <linux/random.h>
#include <linux/mfd/wm831x/core.h>
#include <linux/mfd/wm831x/otp.h>
@@ -66,6 +67,7 @@ static DEVICE_ATTR(unique_id, 0444, wm831x_unique_id_show, NULL);
int wm831x_otp_init(struct wm831x *wm831x)
{
+ char uuid[WM831X_UNIQUE_ID_LEN];
int ret;
ret = device_create_file(wm831x->dev, &dev_attr_unique_id);
@@ -73,6 +75,12 @@ int wm831x_otp_init(struct wm831x *wm831x)
dev_err(wm831x->dev, "Unique ID attribute not created: %d\n",
ret);
+ ret = wm831x_unique_id_read(wm831x, uuid);
+ if (ret == 0)
+ add_device_randomness(uuid, sizeof(uuid));
+ else
+ dev_err(wm831x->dev, "Failed to read UUID: %d\n", ret);
+
return ret;
}
diff --git a/drivers/net/ethernet/intel/e1000e/82571.c b/drivers/net/ethernet/intel/e1000e/82571.c
index 1f063dc..b8e4fcb 100644
--- a/drivers/net/ethernet/intel/e1000e/82571.c
+++ b/drivers/net/ethernet/intel/e1000e/82571.c
@@ -1601,10 +1601,8 @@ static s32 e1000_check_for_serdes_link_82571(struct e1000_hw *hw)
* auto-negotiation in the TXCW register and disable
* forced link in the Device Control register in an
* attempt to auto-negotiate with our link partner.
- * If the partner code word is null, stop forcing
- * and restart auto negotiation.
*/
- if ((rxcw & E1000_RXCW_C) || !(rxcw & E1000_RXCW_CW)) {
+ if (rxcw & E1000_RXCW_C) {
/* Enable autoneg, and unforce link up */
ew32(TXCW, mac->txcw);
ew32(CTRL, (ctrl & ~E1000_CTRL_SLU));
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index e44bfb8..5fb59ae 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -185,7 +185,6 @@ static void __tun_detach(struct tun_struct *tun)
netif_tx_lock_bh(tun->dev);
netif_carrier_off(tun->dev);
tun->tfile = NULL;
- tun->socket.file = NULL;
netif_tx_unlock_bh(tun->dev);
/* Drop read queue */
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 995ca8e..988b1f3 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -740,6 +740,7 @@ int ath9k_hw_init(struct ath_hw *ah)
case AR9300_DEVID_AR9340:
case AR9300_DEVID_AR9580:
case AR9300_DEVID_AR9462:
+ case AR9485_DEVID_AR1111:
break;
default:
if (common->bus_ops->ath_bus_type == ATH_USB)
diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index b620c55..02f5007 100644
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -48,6 +48,7 @@
#define AR9300_DEVID_AR9580 0x0033
#define AR9300_DEVID_AR9462 0x0034
#define AR9300_DEVID_AR9330 0x0035
+#define AR9485_DEVID_AR1111 0x0037
#define AR5416_AR9100_DEVID 0x000b
diff --git a/drivers/net/wireless/ath/ath9k/pci.c b/drivers/net/wireless/ath/ath9k/pci.c
index a856b51..54e8437 100644
--- a/drivers/net/wireless/ath/ath9k/pci.c
+++ b/drivers/net/wireless/ath/ath9k/pci.c
@@ -37,6 +37,7 @@ static DEFINE_PCI_DEVICE_TABLE(ath_pci_id_table) = {
{ PCI_VDEVICE(ATHEROS, 0x0032) }, /* PCI-E AR9485 */
{ PCI_VDEVICE(ATHEROS, 0x0033) }, /* PCI-E AR9580 */
{ PCI_VDEVICE(ATHEROS, 0x0034) }, /* PCI-E AR9462 */
+ { PCI_VDEVICE(ATHEROS, 0x0037) }, /* PCI-E AR1111/AR9485 */
{ 0 }
};
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
index 8cebd7c..745ce42 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
@@ -709,11 +709,14 @@ static int rs_toggle_antenna(u32 valid_ant, u32 *rate_n_flags,
*/
static bool rs_use_green(struct ieee80211_sta *sta)
{
- struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
- struct iwl_rxon_context *ctx = sta_priv->ctx;
-
- return (sta->ht_cap.cap & IEEE80211_HT_CAP_GRN_FLD) &&
- !(ctx->ht.non_gf_sta_present);
+ /*
+ * There's a bug somewhere in this code that causes the
+ * scaling to get stuck because GF+SGI can't be combined
+ * in SISO rates. Until we find that bug, disable GF, it
+ * has only limited benefit and we still interoperate with
+ * GF APs since we can always receive GF transmissions.
+ */
+ return false;
}
/**
diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c
index ee22bd7..5fb3a2e 100644
--- a/drivers/net/wireless/rt2x00/rt61pci.c
+++ b/drivers/net/wireless/rt2x00/rt61pci.c
@@ -2243,8 +2243,7 @@ static void rt61pci_txdone(struct rt2x00_dev *rt2x00dev)
static void rt61pci_wakeup(struct rt2x00_dev *rt2x00dev)
{
- struct ieee80211_conf conf = { .flags = 0 };
- struct rt2x00lib_conf libconf = { .conf = &conf };
+ struct rt2x00lib_conf libconf = { .conf = &rt2x00dev->hw->conf };
rt61pci_config(rt2x00dev, &libconf, IEEE80211_CONF_CHANGE_PS);
}
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 77aadde..556cbb4 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -1467,14 +1467,9 @@ static int asus_wmi_platform_init(struct asus_wmi *asus)
*/
if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
asus->dsts_id = ASUS_WMI_METHODID_DSTS;
- else if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS2, 0, 0, NULL))
+ else
asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
- if (!asus->dsts_id) {
- pr_err("Can't find DSTS");
- return -ENODEV;
- }
-
/* CWAP allow to define the behavior of the Fn+F2 key,
* this method doesn't seems to be present on Eee PCs */
if (asus->driver->quirks->wapf >= 0)
diff --git a/drivers/rtc/rtc-wm831x.c b/drivers/rtc/rtc-wm831x.c
index 59c6245..ea5c6f8 100644
--- a/drivers/rtc/rtc-wm831x.c
+++ b/drivers/rtc/rtc-wm831x.c
@@ -24,7 +24,7 @@
#include <linux/mfd/wm831x/core.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
-
+#include <linux/random.h>
/*
* R16416 (0x4020) - RTC Write Counter
@@ -96,6 +96,26 @@ struct wm831x_rtc {
unsigned int alarm_enabled:1;
};
+static void wm831x_rtc_add_randomness(struct wm831x *wm831x)
+{
+ int ret;
+ u16 reg;
+
+ /*
+ * The write counter contains a pseudo-random number which is
+ * regenerated every time we set the RTC so it should be a
+ * useful per-system source of entropy.
+ */
+ ret = wm831x_reg_read(wm831x, WM831X_RTC_WRITE_COUNTER);
+ if (ret >= 0) {
+ reg = ret;
+ add_device_randomness(®, sizeof(reg));
+ } else {
+ dev_warn(wm831x->dev, "Failed to read RTC write counter: %d\n",
+ ret);
+ }
+}
+
/*
* Read current time and date in RTC
*/
@@ -431,6 +451,8 @@ static int wm831x_rtc_probe(struct platform_device *pdev)
alm_irq, ret);
}
+ wm831x_rtc_add_randomness(wm831x);
+
return 0;
err:
diff --git a/drivers/target/target_core_cdb.c b/drivers/target/target_core_cdb.c
index 664f6e7..bf7d38a 100644
--- a/drivers/target/target_core_cdb.c
+++ b/drivers/target/target_core_cdb.c
@@ -1013,11 +1013,11 @@ int target_emulate_unmap(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
unsigned char *buf, *ptr = NULL;
- unsigned char *cdb = &cmd->t_task_cdb[0];
sector_t lba;
- unsigned int size = cmd->data_length, range;
- int ret = 0, offset;
- unsigned short dl, bd_dl;
+ int size = cmd->data_length;
+ u32 range;
+ int ret = 0;
+ int dl, bd_dl;
if (!dev->transport->do_discard) {
pr_err("UNMAP emulation not supported for: %s\n",
@@ -1026,24 +1026,41 @@ int target_emulate_unmap(struct se_cmd *cmd)
return -ENOSYS;
}
- /* First UNMAP block descriptor starts at 8 byte offset */
- offset = 8;
- size -= 8;
- dl = get_unaligned_be16(&cdb[0]);
- bd_dl = get_unaligned_be16(&cdb[2]);
-
buf = transport_kmap_data_sg(cmd);
- ptr = &buf[offset];
- pr_debug("UNMAP: Sub: %s Using dl: %hu bd_dl: %hu size: %hu"
+ dl = get_unaligned_be16(&buf[0]);
+ bd_dl = get_unaligned_be16(&buf[2]);
+
+ size = min(size - 8, bd_dl);
+ if (size / 16 > dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count) {
+ cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
+ ret = -EINVAL;
+ goto err;
+ }
+
+ /* First UNMAP block descriptor starts at 8 byte offset */
+ ptr = &buf[8];
+ pr_debug("UNMAP: Sub: %s Using dl: %u bd_dl: %u size: %u"
" ptr: %p\n", dev->transport->name, dl, bd_dl, size, ptr);
- while (size) {
+ while (size >= 16) {
lba = get_unaligned_be64(&ptr[0]);
range = get_unaligned_be32(&ptr[8]);
pr_debug("UNMAP: Using lba: %llu and range: %u\n",
(unsigned long long)lba, range);
+ if (range > dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count) {
+ cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
+ ret = -EINVAL;
+ goto err;
+ }
+
+ if (lba + range > dev->transport->get_blocks(dev) + 1) {
+ cmd->scsi_sense_reason = TCM_ADDRESS_OUT_OF_RANGE;
+ ret = -EINVAL;
+ goto err;
+ }
+
ret = dev->transport->do_discard(dev, lba, range);
if (ret < 0) {
pr_err("blkdev_issue_discard() failed: %d\n",
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 9fc2e90..70223d5 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -24,6 +24,7 @@
#include <linux/kthread.h>
#include <linux/mutex.h>
#include <linux/freezer.h>
+#include <linux/random.h>
#include <asm/uaccess.h>
#include <asm/byteorder.h>
@@ -2173,6 +2174,14 @@ int usb_new_device(struct usb_device *udev)
/* Tell the world! */
announce_device(udev);
+ if (udev->serial)
+ add_device_randomness(udev->serial, strlen(udev->serial));
+ if (udev->product)
+ add_device_randomness(udev->product, strlen(udev->product));
+ if (udev->manufacturer)
+ add_device_randomness(udev->manufacturer,
+ strlen(udev->manufacturer));
+
device_enable_async_suspend(&udev->dev);
/*
diff --git a/drivers/video/smscufx.c b/drivers/video/smscufx.c
index af3ef27..f39e069 100644
--- a/drivers/video/smscufx.c
+++ b/drivers/video/smscufx.c
@@ -904,7 +904,7 @@ static ssize_t ufx_ops_write(struct fb_info *info, const char __user *buf,
result = fb_sys_write(info, buf, count, ppos);
if (result > 0) {
- int start = max((int)(offset / info->fix.line_length) - 1, 0);
+ int start = max((int)(offset / info->fix.line_length), 0);
int lines = min((u32)((result / info->fix.line_length) + 1),
(u32)info->var.yres);
diff --git a/fs/exofs/ore.c b/fs/exofs/ore.c
index 24a49d4..1585db1 100644
--- a/fs/exofs/ore.c
+++ b/fs/exofs/ore.c
@@ -837,11 +837,11 @@ static int _write_mirror(struct ore_io_state *ios, int cur_comp)
bio->bi_rw |= REQ_WRITE;
}
- osd_req_write(or, _ios_obj(ios, dev), per_dev->offset,
- bio, per_dev->length);
+ osd_req_write(or, _ios_obj(ios, cur_comp),
+ per_dev->offset, bio, per_dev->length);
ORE_DBGMSG("write(0x%llx) offset=0x%llx "
"length=0x%llx dev=%d\n",
- _LLU(_ios_obj(ios, dev)->id),
+ _LLU(_ios_obj(ios, cur_comp)->id),
_LLU(per_dev->offset),
_LLU(per_dev->length), dev);
} else if (ios->kern_buff) {
@@ -853,20 +853,20 @@ static int _write_mirror(struct ore_io_state *ios, int cur_comp)
(ios->si.unit_off + ios->length >
ios->layout->stripe_unit));
- ret = osd_req_write_kern(or, _ios_obj(ios, per_dev->dev),
+ ret = osd_req_write_kern(or, _ios_obj(ios, cur_comp),
per_dev->offset,
ios->kern_buff, ios->length);
if (unlikely(ret))
goto out;
ORE_DBGMSG2("write_kern(0x%llx) offset=0x%llx "
"length=0x%llx dev=%d\n",
- _LLU(_ios_obj(ios, dev)->id),
+ _LLU(_ios_obj(ios, cur_comp)->id),
_LLU(per_dev->offset),
_LLU(ios->length), per_dev->dev);
} else {
- osd_req_set_attributes(or, _ios_obj(ios, dev));
+ osd_req_set_attributes(or, _ios_obj(ios, cur_comp));
ORE_DBGMSG2("obj(0x%llx) set_attributes=%d dev=%d\n",
- _LLU(_ios_obj(ios, dev)->id),
+ _LLU(_ios_obj(ios, cur_comp)->id),
ios->out_attr_len, dev);
}
diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c
index 06658ca..0b6387c 100644
--- a/fs/nilfs2/ioctl.c
+++ b/fs/nilfs2/ioctl.c
@@ -182,7 +182,7 @@ static int nilfs_ioctl_change_cpmode(struct inode *inode, struct file *filp,
if (copy_from_user(&cpmode, argp, sizeof(cpmode)))
goto out;
- down_read(&inode->i_sb->s_umount);
+ mutex_lock(&nilfs->ns_snapshot_mount_mutex);
nilfs_transaction_begin(inode->i_sb, &ti, 0);
ret = nilfs_cpfile_change_cpmode(
@@ -192,7 +192,7 @@ static int nilfs_ioctl_change_cpmode(struct inode *inode, struct file *filp,
else
nilfs_transaction_commit(inode->i_sb); /* never fails */
- up_read(&inode->i_sb->s_umount);
+ mutex_unlock(&nilfs->ns_snapshot_mount_mutex);
out:
mnt_drop_write_file(filp);
return ret;
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 1099a76..496904b 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -948,6 +948,8 @@ static int nilfs_attach_snapshot(struct super_block *s, __u64 cno,
struct nilfs_root *root;
int ret;
+ mutex_lock(&nilfs->ns_snapshot_mount_mutex);
+
down_read(&nilfs->ns_segctor_sem);
ret = nilfs_cpfile_is_snapshot(nilfs->ns_cpfile, cno);
up_read(&nilfs->ns_segctor_sem);
@@ -972,6 +974,7 @@ static int nilfs_attach_snapshot(struct super_block *s, __u64 cno,
ret = nilfs_get_root_dentry(s, root, root_dentry);
nilfs_put_root(root);
out:
+ mutex_unlock(&nilfs->ns_snapshot_mount_mutex);
return ret;
}
diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c
index 501b7f8..41e6a04 100644
--- a/fs/nilfs2/the_nilfs.c
+++ b/fs/nilfs2/the_nilfs.c
@@ -76,6 +76,7 @@ struct the_nilfs *alloc_nilfs(struct block_device *bdev)
nilfs->ns_bdev = bdev;
atomic_set(&nilfs->ns_ndirtyblks, 0);
init_rwsem(&nilfs->ns_sem);
+ mutex_init(&nilfs->ns_snapshot_mount_mutex);
INIT_LIST_HEAD(&nilfs->ns_dirty_files);
INIT_LIST_HEAD(&nilfs->ns_gc_inodes);
spin_lock_init(&nilfs->ns_inode_lock);
diff --git a/fs/nilfs2/the_nilfs.h b/fs/nilfs2/the_nilfs.h
index 9992b11..de7435f 100644
--- a/fs/nilfs2/the_nilfs.h
+++ b/fs/nilfs2/the_nilfs.h
@@ -47,6 +47,7 @@ enum {
* @ns_flags: flags
* @ns_bdev: block device
* @ns_sem: semaphore for shared states
+ * @ns_snapshot_mount_mutex: mutex to protect snapshot mounts
* @ns_sbh: buffer heads of on-disk super blocks
* @ns_sbp: pointers to super block data
* @ns_sbwtime: previous write time of super block
@@ -99,6 +100,7 @@ struct the_nilfs {
struct block_device *ns_bdev;
struct rw_semaphore ns_sem;
+ struct mutex ns_snapshot_mount_mutex;
/*
* used for
diff --git a/include/linux/input/eeti_ts.h b/include/linux/input/eeti_ts.h
index f875b31..16625d7 100644
--- a/include/linux/input/eeti_ts.h
+++ b/include/linux/input/eeti_ts.h
@@ -2,6 +2,7 @@
#define LINUX_INPUT_EETI_TS_H
struct eeti_ts_platform_data {
+ int irq_gpio;
unsigned int irq_active_high;
};
diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
index f1e2527..9a323d1 100644
--- a/include/linux/irqdesc.h
+++ b/include/linux/irqdesc.h
@@ -39,7 +39,6 @@ struct module;
*/
struct irq_desc {
struct irq_data irq_data;
- struct timer_rand_state *timer_rand_state;
unsigned int __percpu *kstat_irqs;
irq_flow_handler_t handle_irq;
#ifdef CONFIG_IRQ_PREFLOW_FASTEOI
diff --git a/include/linux/mfd/ezx-pcap.h b/include/linux/mfd/ezx-pcap.h
index 40c37216..32a1b5c 100644
--- a/include/linux/mfd/ezx-pcap.h
+++ b/include/linux/mfd/ezx-pcap.h
@@ -16,6 +16,7 @@ struct pcap_subdev {
struct pcap_platform_data {
unsigned int irq_base;
unsigned int config;
+ int gpio;
void (*init) (void *); /* board specific init */
int num_subdevs;
struct pcap_subdev *subdevs;
diff --git a/include/linux/random.h b/include/linux/random.h
index 8f74538..ac621ce 100644
--- a/include/linux/random.h
+++ b/include/linux/random.h
@@ -48,13 +48,13 @@ struct rnd_state {
#ifdef __KERNEL__
-extern void rand_initialize_irq(int irq);
-
+extern void add_device_randomness(const void *, unsigned int);
extern void add_input_randomness(unsigned int type, unsigned int code,
unsigned int value);
-extern void add_interrupt_randomness(int irq);
+extern void add_interrupt_randomness(int irq, int irq_flags);
extern void get_random_bytes(void *buf, int nbytes);
+extern void get_random_bytes_arch(void *buf, int nbytes);
void generate_random_uuid(unsigned char uuid_out[16]);
#ifndef MODULE
diff --git a/include/linux/security.h b/include/linux/security.h
index 4e5a73c..3dea6a9 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -1242,8 +1242,6 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
* Check that the @parent process has sufficient permission to trace the
* current process before allowing the current process to present itself
* to the @parent process for tracing.
- * The parent process will still have to undergo the ptrace_access_check
- * checks before it is allowed to trace this one.
* @parent contains the task_struct structure for debugger process.
* Return 0 if permission is granted.
* @capget:
diff --git a/include/trace/events/random.h b/include/trace/events/random.h
new file mode 100644
index 0000000..422df19
--- /dev/null
+++ b/include/trace/events/random.h
@@ -0,0 +1,134 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM random
+
+#if !defined(_TRACE_RANDOM_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_RANDOM_H
+
+#include <linux/writeback.h>
+#include <linux/tracepoint.h>
+
+DECLARE_EVENT_CLASS(random__mix_pool_bytes,
+ TP_PROTO(const char *pool_name, int bytes, unsigned long IP),
+
+ TP_ARGS(pool_name, bytes, IP),
+
+ TP_STRUCT__entry(
+ __field( const char *, pool_name )
+ __field( int, bytes )
+ __field(unsigned long, IP )
+ ),
+
+ TP_fast_assign(
+ __entry->pool_name = pool_name;
+ __entry->bytes = bytes;
+ __entry->IP = IP;
+ ),
+
+ TP_printk("%s pool: bytes %d caller %pF",
+ __entry->pool_name, __entry->bytes, (void *)__entry->IP)
+);
+
+DEFINE_EVENT(random__mix_pool_bytes, mix_pool_bytes,
+ TP_PROTO(const char *pool_name, int bytes, unsigned long IP),
+
+ TP_ARGS(pool_name, bytes, IP)
+);
+
+DEFINE_EVENT(random__mix_pool_bytes, mix_pool_bytes_nolock,
+ TP_PROTO(const char *pool_name, int bytes, unsigned long IP),
+
+ TP_ARGS(pool_name, bytes, IP)
+);
+
+TRACE_EVENT(credit_entropy_bits,
+ TP_PROTO(const char *pool_name, int bits, int entropy_count,
+ int entropy_total, unsigned long IP),
+
+ TP_ARGS(pool_name, bits, entropy_count, entropy_total, IP),
+
+ TP_STRUCT__entry(
+ __field( const char *, pool_name )
+ __field( int, bits )
+ __field( int, entropy_count )
+ __field( int, entropy_total )
+ __field(unsigned long, IP )
+ ),
+
+ TP_fast_assign(
+ __entry->pool_name = pool_name;
+ __entry->bits = bits;
+ __entry->entropy_count = entropy_count;
+ __entry->entropy_total = entropy_total;
+ __entry->IP = IP;
+ ),
+
+ TP_printk("%s pool: bits %d entropy_count %d entropy_total %d "
+ "caller %pF", __entry->pool_name, __entry->bits,
+ __entry->entropy_count, __entry->entropy_total,
+ (void *)__entry->IP)
+);
+
+TRACE_EVENT(get_random_bytes,
+ TP_PROTO(int nbytes, unsigned long IP),
+
+ TP_ARGS(nbytes, IP),
+
+ TP_STRUCT__entry(
+ __field( int, nbytes )
+ __field(unsigned long, IP )
+ ),
+
+ TP_fast_assign(
+ __entry->nbytes = nbytes;
+ __entry->IP = IP;
+ ),
+
+ TP_printk("nbytes %d caller %pF", __entry->nbytes, (void *)__entry->IP)
+);
+
+DECLARE_EVENT_CLASS(random__extract_entropy,
+ TP_PROTO(const char *pool_name, int nbytes, int entropy_count,
+ unsigned long IP),
+
+ TP_ARGS(pool_name, nbytes, entropy_count, IP),
+
+ TP_STRUCT__entry(
+ __field( const char *, pool_name )
+ __field( int, nbytes )
+ __field( int, entropy_count )
+ __field(unsigned long, IP )
+ ),
+
+ TP_fast_assign(
+ __entry->pool_name = pool_name;
+ __entry->nbytes = nbytes;
+ __entry->entropy_count = entropy_count;
+ __entry->IP = IP;
+ ),
+
+ TP_printk("%s pool: nbytes %d entropy_count %d caller %pF",
+ __entry->pool_name, __entry->nbytes, __entry->entropy_count,
+ (void *)__entry->IP)
+);
+
+
+DEFINE_EVENT(random__extract_entropy, extract_entropy,
+ TP_PROTO(const char *pool_name, int nbytes, int entropy_count,
+ unsigned long IP),
+
+ TP_ARGS(pool_name, nbytes, entropy_count, IP)
+);
+
+DEFINE_EVENT(random__extract_entropy, extract_entropy_user,
+ TP_PROTO(const char *pool_name, int nbytes, int entropy_count,
+ unsigned long IP),
+
+ TP_ARGS(pool_name, nbytes, entropy_count, IP)
+);
+
+
+
+#endif /* _TRACE_RANDOM_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index bdb1803..131ca17 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -133,7 +133,7 @@ irqreturn_t
handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action)
{
irqreturn_t retval = IRQ_NONE;
- unsigned int random = 0, irq = desc->irq_data.irq;
+ unsigned int flags = 0, irq = desc->irq_data.irq;
do {
irqreturn_t res;
@@ -161,7 +161,7 @@ handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action)
/* Fall through to add to randomness */
case IRQ_HANDLED:
- random |= action->flags;
+ flags |= action->flags;
break;
default:
@@ -172,8 +172,7 @@ handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action)
action = action->next;
} while (action);
- if (random & IRQF_SAMPLE_RANDOM)
- add_interrupt_randomness(irq);
+ add_interrupt_randomness(irq, flags);
if (!noirqdebug)
note_interrupt(irq, desc, retval);
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 8c54823..5e42eb1 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -893,22 +893,6 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
return -ENOSYS;
if (!try_module_get(desc->owner))
return -ENODEV;
- /*
- * Some drivers like serial.c use request_irq() heavily,
- * so we have to be careful not to interfere with a
- * running system.
- */
- if (new->flags & IRQF_SAMPLE_RANDOM) {
- /*
- * This function might sleep, we want to call it first,
- * outside of the atomic block.
- * Yes, this might clear the entropy pool if the wrong
- * driver is attempted to be loaded, without actually
- * installing a new handler, but is this really a problem,
- * only the sysadmin is able to do this.
- */
- rand_initialize_irq(irq);
- }
/*
* Check whether the interrupt nests into another interrupt
@@ -1354,7 +1338,6 @@ EXPORT_SYMBOL(free_irq);
* Flags:
*
* IRQF_SHARED Interrupt is shared
- * IRQF_SAMPLE_RANDOM The interrupt can be used for entropy
* IRQF_TRIGGER_* Specify active edge(s) or level
*
*/
diff --git a/kernel/printk.c b/kernel/printk.c
index 21bea76..146827f 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -999,6 +999,7 @@ static int syslog_print_all(char __user *buf, int size, bool clear)
struct log *msg = log_from_idx(idx);
len += msg_print_text(msg, prev, true, NULL, 0);
+ prev = msg->flags;
idx = log_next(idx);
seq++;
}
@@ -1011,6 +1012,7 @@ static int syslog_print_all(char __user *buf, int size, bool clear)
struct log *msg = log_from_idx(idx);
len -= msg_print_text(msg, prev, true, NULL, 0);
+ prev = msg->flags;
idx = log_next(idx);
seq++;
}
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index c3f36d41..598a73e 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -1030,7 +1030,8 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr,
* %pK cannot be used in IRQ context because its test
* for CAP_SYSLOG would be meaningless.
*/
- if (in_irq() || in_serving_softirq() || in_nmi()) {
+ if (kptr_restrict && (in_irq() || in_serving_softirq() ||
+ in_nmi())) {
if (spec.field_width == -1)
spec.field_width = default_width;
return string(buf, end, "pK-error", spec);
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index e198831..19558df 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2393,6 +2393,22 @@ void unmap_hugepage_range(struct vm_area_struct *vma, unsigned long start,
{
mutex_lock(&vma->vm_file->f_mapping->i_mmap_mutex);
__unmap_hugepage_range(vma, start, end, ref_page);
+ /*
+ * Clear this flag so that x86's huge_pmd_share page_table_shareable
+ * test will fail on a vma being torn down, and not grab a page table
+ * on its way out. We're lucky that the flag has such an appropriate
+ * name, and can in fact be safely cleared here. We could clear it
+ * before the __unmap_hugepage_range above, but all that's necessary
+ * is to clear it before releasing the i_mmap_mutex below.
+ *
+ * This works because in the contexts this is called, the VMA is
+ * going to be destroyed. It is not vunerable to madvise(DONTNEED)
+ * because madvise is not supported on hugetlbfs. The same applies
+ * for direct IO. unmap_hugepage_range() is only being called just
+ * before free_pgtables() so clearing VM_MAYSHARE will not cause
+ * surprises later.
+ */
+ vma->vm_flags &= ~VM_MAYSHARE;
mutex_unlock(&vma->vm_file->f_mapping->i_mmap_mutex);
}
@@ -2959,9 +2975,14 @@ void hugetlb_change_protection(struct vm_area_struct *vma,
}
}
spin_unlock(&mm->page_table_lock);
- mutex_unlock(&vma->vm_file->f_mapping->i_mmap_mutex);
-
+ /*
+ * Must flush TLB before releasing i_mmap_mutex: x86's huge_pmd_unshare
+ * may have cleared our pud entry and done put_page on the page table:
+ * once we release i_mmap_mutex, another task can do the final put_page
+ * and that page table be reused and filled with junk.
+ */
flush_tlb_range(vma, start, end);
+ mutex_unlock(&vma->vm_file->f_mapping->i_mmap_mutex);
}
int hugetlb_reserve_pages(struct inode *inode,
diff --git a/mm/internal.h b/mm/internal.h
index 2ba87fb..8052379 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -347,3 +347,5 @@ extern u32 hwpoison_filter_enable;
extern unsigned long vm_mmap_pgoff(struct file *, unsigned long,
unsigned long, unsigned long,
unsigned long, unsigned long);
+
+extern void set_pageblock_order(void);
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index de4ce70..6de0d61 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1433,8 +1433,8 @@ static int soft_offline_huge_page(struct page *page, int flags)
/* Keep page count to indicate a given hugepage is isolated. */
list_add(&hpage->lru, &pagelist);
- ret = migrate_huge_pages(&pagelist, new_page, MPOL_MF_MOVE_ALL, 0,
- true);
+ ret = migrate_huge_pages(&pagelist, new_page, MPOL_MF_MOVE_ALL, false,
+ MIGRATE_SYNC);
if (ret) {
struct page *page1, *page2;
list_for_each_entry_safe(page1, page2, &pagelist, lru)
@@ -1563,7 +1563,7 @@ int soft_offline_page(struct page *page, int flags)
page_is_file_cache(page));
list_add(&page->lru, &pagelist);
ret = migrate_pages(&pagelist, new_page, MPOL_MF_MOVE_ALL,
- 0, MIGRATE_SYNC);
+ false, MIGRATE_SYNC);
if (ret) {
putback_lru_pages(&pagelist);
pr_info("soft offline: %#lx: migration failed %d, type %lx\n",
diff --git a/mm/mmu_notifier.c b/mm/mmu_notifier.c
index 9a611d3..862b608 100644
--- a/mm/mmu_notifier.c
+++ b/mm/mmu_notifier.c
@@ -33,6 +33,24 @@
void __mmu_notifier_release(struct mm_struct *mm)
{
struct mmu_notifier *mn;
+ struct hlist_node *n;
+
+ /*
+ * RCU here will block mmu_notifier_unregister until
+ * ->release returns.
+ */
+ rcu_read_lock();
+ hlist_for_each_entry_rcu(mn, n, &mm->mmu_notifier_mm->list, hlist)
+ /*
+ * if ->release runs before mmu_notifier_unregister it
+ * must be handled as it's the only way for the driver
+ * to flush all existing sptes and stop the driver
+ * from establishing any more sptes before all the
+ * pages in the mm are freed.
+ */
+ if (mn->ops->release)
+ mn->ops->release(mn, mm);
+ rcu_read_unlock();
spin_lock(&mm->mmu_notifier_mm->lock);
while (unlikely(!hlist_empty(&mm->mmu_notifier_mm->list))) {
@@ -46,23 +64,6 @@ void __mmu_notifier_release(struct mm_struct *mm)
* mmu_notifier_unregister to return.
*/
hlist_del_init_rcu(&mn->hlist);
- /*
- * RCU here will block mmu_notifier_unregister until
- * ->release returns.
- */
- rcu_read_lock();
- spin_unlock(&mm->mmu_notifier_mm->lock);
- /*
- * if ->release runs before mmu_notifier_unregister it
- * must be handled as it's the only way for the driver
- * to flush all existing sptes and stop the driver
- * from establishing any more sptes before all the
- * pages in the mm are freed.
- */
- if (mn->ops->release)
- mn->ops->release(mn, mm);
- rcu_read_unlock();
- spin_lock(&mm->mmu_notifier_mm->lock);
}
spin_unlock(&mm->mmu_notifier_mm->lock);
@@ -284,16 +285,13 @@ void mmu_notifier_unregister(struct mmu_notifier *mn, struct mm_struct *mm)
{
BUG_ON(atomic_read(&mm->mm_count) <= 0);
- spin_lock(&mm->mmu_notifier_mm->lock);
if (!hlist_unhashed(&mn->hlist)) {
- hlist_del_rcu(&mn->hlist);
-
/*
* RCU here will force exit_mmap to wait ->release to finish
* before freeing the pages.
*/
rcu_read_lock();
- spin_unlock(&mm->mmu_notifier_mm->lock);
+
/*
* exit_mmap will block in mmu_notifier_release to
* guarantee ->release is called before freeing the
@@ -302,8 +300,11 @@ void mmu_notifier_unregister(struct mmu_notifier *mn, struct mm_struct *mm)
if (mn->ops->release)
mn->ops->release(mn, mm);
rcu_read_unlock();
- } else
+
+ spin_lock(&mm->mmu_notifier_mm->lock);
+ hlist_del_rcu(&mn->hlist);
spin_unlock(&mm->mmu_notifier_mm->lock);
+ }
/*
* Wait any running method to finish, of course including
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 4a4f921..201b508 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -4301,7 +4301,7 @@ static inline void setup_usemap(struct pglist_data *pgdat,
#ifdef CONFIG_HUGETLB_PAGE_SIZE_VARIABLE
/* Initialise the number of pages represented by NR_PAGEBLOCK_BITS */
-static inline void __init set_pageblock_order(void)
+void __init set_pageblock_order(void)
{
unsigned int order;
@@ -4329,7 +4329,7 @@ static inline void __init set_pageblock_order(void)
* include/linux/pageblock-flags.h for the values of pageblock_order based on
* the kernel config
*/
-static inline void set_pageblock_order(void)
+void __init set_pageblock_order(void)
{
}
diff --git a/mm/sparse.c b/mm/sparse.c
index c7bb952..950981f 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -493,6 +493,9 @@ void __init sparse_init(void)
struct page **map_map;
#endif
+ /* Setup pageblock_order for HUGETLB_PAGE_SIZE_VARIABLE */
+ set_pageblock_order();
+
/*
* map is using big page (aka 2M in x86 64 bit)
* usemap is less one page (aka 24 bytes)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 66e4310..f0f8ebb 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -720,9 +720,41 @@ static unsigned long shrink_page_list(struct list_head *page_list,
(PageSwapCache(page) && (sc->gfp_mask & __GFP_IO));
if (PageWriteback(page)) {
- nr_writeback++;
- unlock_page(page);
- goto keep;
+ /*
+ * memcg doesn't have any dirty pages throttling so we
+ * could easily OOM just because too many pages are in
+ * writeback and there is nothing else to reclaim.
+ *
+ * Check __GFP_IO, certainly because a loop driver
+ * thread might enter reclaim, and deadlock if it waits
+ * on a page for which it is needed to do the write
+ * (loop masks off __GFP_IO|__GFP_FS for this reason);
+ * but more thought would probably show more reasons.
+ *
+ * Don't require __GFP_FS, since we're not going into
+ * the FS, just waiting on its writeback completion.
+ * Worryingly, ext4 gfs2 and xfs allocate pages with
+ * grab_cache_page_write_begin(,,AOP_FLAG_NOFS), so
+ * testing may_enter_fs here is liable to OOM on them.
+ */
+ if (global_reclaim(sc) ||
+ !PageReclaim(page) || !(sc->gfp_mask & __GFP_IO)) {
+ /*
+ * This is slightly racy - end_page_writeback()
+ * might have just cleared PageReclaim, then
+ * setting PageReclaim here end up interpreted
+ * as PageReadahead - but that does not matter
+ * enough to care. What we do want is for this
+ * page to have PageReclaim set next time memcg
+ * reclaim reaches the tests above, so it will
+ * then wait_on_page_writeback() to avoid OOM;
+ * and it's also appropriate in global reclaim.
+ */
+ SetPageReclaim(page);
+ nr_writeback++;
+ goto keep_locked;
+ }
+ wait_on_page_writeback(page);
}
references = page_check_references(page, sc);
diff --git a/net/core/dev.c b/net/core/dev.c
index 1cb0d8a..a000840 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1172,6 +1172,7 @@ static int __dev_open(struct net_device *dev)
net_dmaengine_get();
dev_set_rx_mode(dev);
dev_activate(dev);
+ add_device_randomness(dev->dev_addr, dev->addr_len);
}
return ret;
@@ -4767,6 +4768,7 @@ int dev_set_mac_address(struct net_device *dev, struct sockaddr *sa)
err = ops->ndo_set_mac_address(dev, sa);
if (!err)
call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
+ add_device_randomness(dev->dev_addr, dev->addr_len);
return err;
}
EXPORT_SYMBOL(dev_set_mac_address);
@@ -5545,6 +5547,7 @@ int register_netdevice(struct net_device *dev)
dev_init_scheduler(dev);
dev_hold(dev);
list_netdevice(dev);
+ add_device_randomness(dev->dev_addr, dev->addr_len);
/* Notify protocols, that a new device appeared. */
ret = call_netdevice_notifiers(NETDEV_REGISTER, dev);
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 23e3f66..6c50ac0 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1384,6 +1384,7 @@ static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
goto errout;
send_addr_notify = 1;
modified = 1;
+ add_device_randomness(dev->dev_addr, dev->addr_len);
}
if (tb[IFLA_MTU]) {
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 2913113..e9494bc 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -621,6 +621,7 @@ void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
del_timer_sync(&sdata->u.mesh.housekeeping_timer);
del_timer_sync(&sdata->u.mesh.mesh_path_root_timer);
+ del_timer_sync(&sdata->u.mesh.mesh_path_timer);
/*
* If the timer fired while we waited for it, it will have
* requeued the work. Now the work will be running again
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index f56f045..aaf70aa 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -1844,12 +1844,13 @@ call_timeout(struct rpc_task *task)
return;
}
if (RPC_IS_SOFT(task)) {
- if (clnt->cl_chatty)
+ if (clnt->cl_chatty) {
rcu_read_lock();
printk(KERN_NOTICE "%s: server %s not responding, timed out\n",
clnt->cl_protname,
rcu_dereference(clnt->cl_xprt)->servername);
rcu_read_unlock();
+ }
if (task->tk_flags & RPC_TASK_TIMEOUT)
rpc_exit(task, -ETIMEDOUT);
else
diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c
index 92509ff..a70acae 100644
--- a/net/sunrpc/rpcb_clnt.c
+++ b/net/sunrpc/rpcb_clnt.c
@@ -251,7 +251,7 @@ static int rpcb_create_local_unix(struct net *net)
if (IS_ERR(clnt)) {
dprintk("RPC: failed to create AF_LOCAL rpcbind "
"client (errno %ld).\n", PTR_ERR(clnt));
- result = -PTR_ERR(clnt);
+ result = PTR_ERR(clnt);
goto out;
}
@@ -298,7 +298,7 @@ static int rpcb_create_local_net(struct net *net)
if (IS_ERR(clnt)) {
dprintk("RPC: failed to create local rpcbind "
"client (errno %ld).\n", PTR_ERR(clnt));
- result = -PTR_ERR(clnt);
+ result = PTR_ERR(clnt);
goto out;
}
diff --git a/net/wireless/core.c b/net/wireless/core.c
index a87d435..e98ab2f 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -974,6 +974,11 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
*/
synchronize_rcu();
INIT_LIST_HEAD(&wdev->list);
+ /*
+ * Ensure that all events have been processed and
+ * freed.
+ */
+ cfg80211_process_wdev_events(wdev);
break;
case NETDEV_PRE_UP:
if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype)))
diff --git a/net/wireless/core.h b/net/wireless/core.h
index 8523f38..bc686ef 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -426,6 +426,7 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
struct net_device *dev, enum nl80211_iftype ntype,
u32 *flags, struct vif_params *params);
void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
+void cfg80211_process_wdev_events(struct wireless_dev *wdev);
int cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev,
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index baf5704..460af03 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -891,7 +891,21 @@ static void handle_channel(struct wiphy *wiphy,
chan->max_antenna_gain = min(chan->orig_mag,
(int) MBI_TO_DBI(power_rule->max_antenna_gain));
chan->max_reg_power = (int) MBM_TO_DBM(power_rule->max_eirp);
- chan->max_power = min(chan->max_power, chan->max_reg_power);
+ if (chan->orig_mpwr) {
+ /*
+ * Devices that have their own custom regulatory domain
+ * but also use WIPHY_FLAG_STRICT_REGULATORY will follow the
+ * passed country IE power settings.
+ */
+ if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE &&
+ wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY &&
+ wiphy->flags & WIPHY_FLAG_STRICT_REGULATORY)
+ chan->max_power = chan->max_reg_power;
+ else
+ chan->max_power = min(chan->orig_mpwr,
+ chan->max_reg_power);
+ } else
+ chan->max_power = chan->max_reg_power;
}
static void handle_band(struct wiphy *wiphy,
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 316cfd0..6f13299 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -716,7 +716,7 @@ void cfg80211_upload_connect_keys(struct wireless_dev *wdev)
wdev->connect_keys = NULL;
}
-static void cfg80211_process_wdev_events(struct wireless_dev *wdev)
+void cfg80211_process_wdev_events(struct wireless_dev *wdev)
{
struct cfg80211_event *ev;
unsigned long flags;
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index daaa4ed..db10db2 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -2792,11 +2792,16 @@ static int selinux_inode_setxattr(struct dentry *dentry, const char *name,
/* We strip a nul only if it is at the end, otherwise the
* context contains a nul and we should audit that */
- str = value;
- if (str[size - 1] == '\0')
- audit_size = size - 1;
- else
- audit_size = size;
+ if (value) {
+ str = value;
+ if (str[size - 1] == '\0')
+ audit_size = size - 1;
+ else
+ audit_size = size;
+ } else {
+ str = "";
+ audit_size = 0;
+ }
ab = audit_log_start(current->audit_context, GFP_ATOMIC, AUDIT_SELINUX_ERR);
audit_log_format(ab, "op=setxattr invalid_context=");
audit_log_n_untrustedstring(ab, value, audit_size);
diff --git a/security/yama/yama_lsm.c b/security/yama/yama_lsm.c
index 83554ee..d51b7c7 100644
--- a/security/yama/yama_lsm.c
+++ b/security/yama/yama_lsm.c
@@ -290,10 +290,51 @@ static int yama_ptrace_access_check(struct task_struct *child,
return rc;
}
+/**
+ * yama_ptrace_traceme - validate PTRACE_TRACEME calls
+ * @parent: task that will become the ptracer of the current task
+ *
+ * Returns 0 if following the ptrace is allowed, -ve on error.
+ */
+static int yama_ptrace_traceme(struct task_struct *parent)
+{
+ int rc;
+
+ /* If standard caps disallows it, so does Yama. We should
+ * only tighten restrictions further.
+ */
+ rc = cap_ptrace_traceme(parent);
+ if (rc)
+ return rc;
+
+ /* Only disallow PTRACE_TRACEME on more aggressive settings. */
+ switch (ptrace_scope) {
+ case YAMA_SCOPE_CAPABILITY:
+ if (!ns_capable(task_user_ns(parent), CAP_SYS_PTRACE))
+ rc = -EPERM;
+ break;
+ case YAMA_SCOPE_NO_ATTACH:
+ rc = -EPERM;
+ break;
+ }
+
+ if (rc) {
+ char name[sizeof(current->comm)];
+ printk_ratelimited(KERN_NOTICE
+ "ptraceme of pid %d was attempted by: %s (pid %d)\n",
+ current->pid,
+ get_task_comm(name, parent),
+ parent->pid);
+ }
+
+ return rc;
+}
+
static struct security_operations yama_ops = {
.name = "yama",
.ptrace_access_check = yama_ptrace_access_check,
+ .ptrace_traceme = yama_ptrace_traceme,
.task_prctl = yama_task_prctl,
.task_free = yama_task_free,
};
diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c
index 2bf99fc..41f28c8 100644
--- a/sound/pci/hda/patch_conexant.c
+++ b/sound/pci/hda/patch_conexant.c
@@ -2972,7 +2972,6 @@ static const struct snd_pci_quirk cxt5066_cfg_tbl[] = {
SND_PCI_QUIRK(0x1028, 0x02d8, "Dell Vostro", CXT5066_DELL_VOSTRO),
SND_PCI_QUIRK(0x1028, 0x02f5, "Dell Vostro 320", CXT5066_IDEAPAD),
SND_PCI_QUIRK(0x1028, 0x0401, "Dell Vostro 1014", CXT5066_DELL_VOSTRO),
- SND_PCI_QUIRK(0x1028, 0x0402, "Dell Vostro", CXT5066_DELL_VOSTRO),
SND_PCI_QUIRK(0x1028, 0x0408, "Dell Inspiron One 19T", CXT5066_IDEAPAD),
SND_PCI_QUIRK(0x1028, 0x050f, "Dell Inspiron", CXT5066_IDEAPAD),
SND_PCI_QUIRK(0x1028, 0x0510, "Dell Vostro", CXT5066_IDEAPAD),
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index fc964d4..44d2ab5 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -5900,6 +5900,8 @@ static const struct alc_fixup alc269_fixups[] = {
[ALC269_FIXUP_PCM_44K] = {
.type = ALC_FIXUP_FUNC,
.v.func = alc269_fixup_pcm_44k,
+ .chained = true,
+ .chain_id = ALC269_FIXUP_QUANTA_MUTE
},
[ALC269_FIXUP_STEREO_DMIC] = {
.type = ALC_FIXUP_FUNC,
@@ -6001,9 +6003,10 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
SND_PCI_QUIRK(0x17aa, 0x21ca, "Thinkpad L412", ALC269_FIXUP_SKU_IGNORE),
SND_PCI_QUIRK(0x17aa, 0x21e9, "Thinkpad Edge 15", ALC269_FIXUP_SKU_IGNORE),
SND_PCI_QUIRK(0x17aa, 0x21f6, "Thinkpad T530", ALC269_FIXUP_LENOVO_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x21fa, "Thinkpad X230", ALC269_FIXUP_LENOVO_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x21fb, "Thinkpad T430s", ALC269_FIXUP_LENOVO_DOCK),
SND_PCI_QUIRK(0x17aa, 0x2203, "Thinkpad X230 Tablet", ALC269_FIXUP_LENOVO_DOCK),
- SND_PCI_QUIRK(0x17aa, 0x3bf8, "Quanta FL1", ALC269_FIXUP_QUANTA_MUTE),
- SND_PCI_QUIRK(0x17aa, 0x3bf8, "Lenovo Ideapd", ALC269_FIXUP_PCM_44K),
+ SND_PCI_QUIRK(0x17aa, 0x3bf8, "Quanta FL1", ALC269_FIXUP_PCM_44K),
SND_PCI_QUIRK(0x17aa, 0x9e54, "LENOVO NB", ALC269_FIXUP_LENOVO_EAPD),
#if 0
prev parent reply other threads:[~2012-08-15 15:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-15 15:19 Linux 3.5.2 Greg KH
2012-08-15 15:20 ` Greg KH [this message]
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