Re: Linux 3.18.63

From: Greg KH
Date: Thu Jul 27 2017 - 21:13:42 EST

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diff --git a/Makefile b/Makefile
index 769add3724a7..5526edb8f0e8 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 3
PATCHLEVEL = 18
-SUBLEVEL = 62
+SUBLEVEL = 63
EXTRAVERSION =
NAME = Diseased Newt

@@ -611,6 +611,9 @@ include $(srctree)/arch/$(SRCARCH)/Makefile

KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,)
KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,)
+KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation)
+KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow)
+KBUILD_CFLAGS += $(call cc-disable-warning, int-in-bool-context)
KBUILD_CFLAGS += $(call cc-option,-fno-PIE)
KBUILD_AFLAGS += $(call cc-option,-fno-PIE)

diff --git a/arch/mips/include/asm/branch.h b/arch/mips/include/asm/branch.h
index de781cf54bc7..da80878f2c0d 100644
--- a/arch/mips/include/asm/branch.h
+++ b/arch/mips/include/asm/branch.h
@@ -74,10 +74,7 @@ static inline int compute_return_epc(struct pt_regs *regs)
return __microMIPS_compute_return_epc(regs);
if (cpu_has_mips16)
return __MIPS16e_compute_return_epc(regs);
- return regs->cp0_epc;
- }
-
- if (!delay_slot(regs)) {
+ } else if (!delay_slot(regs)) {
regs->cp0_epc += 4;
return 0;
}
diff --git a/arch/mips/kernel/branch.c b/arch/mips/kernel/branch.c
index 4d7d99d601cc..5d34d60919f1 100644
--- a/arch/mips/kernel/branch.c
+++ b/arch/mips/kernel/branch.c
@@ -396,7 +396,7 @@ int __MIPS16e_compute_return_epc(struct pt_regs *regs)
*
* @regs: Pointer to pt_regs
* @insn: branch instruction to decode
- * @returns: -EFAULT on error and forces SIGBUS, and on success
+ * @returns: -EFAULT on error and forces SIGILL, and on success
* returns 0 or BRANCH_LIKELY_TAKEN as appropriate after
* evaluating the branch.
*/
@@ -493,6 +493,7 @@ int __compute_return_epc_for_insn(struct pt_regs *regs,
/*
* These are unconditional and in j_format.
*/
+ case jalx_op:
case jal_op:
regs->regs[31] = regs->cp0_epc + 8;
case j_op:
@@ -632,8 +633,9 @@ int __compute_return_epc_for_insn(struct pt_regs *regs,
return ret;

sigill:
- printk("%s: DSP branch but not DSP ASE - sending SIGBUS.\n", current->comm);
- force_sig(SIGBUS, current);
+ pr_info("%s: DSP branch but not DSP ASE - sending SIGILL.\n",
+ current->comm);
+ force_sig(SIGILL, current);
return -EFAULT;
}
EXPORT_SYMBOL_GPL(__compute_return_epc_for_insn);
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index 7aaf0dca09da..29a56858f0e0 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -802,7 +802,7 @@ asmlinkage void syscall_trace_leave(struct pt_regs *regs)
audit_syscall_exit(regs);

if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
- trace_sys_exit(regs, regs->regs[2]);
+ trace_sys_exit(regs, regs_return_value(regs));

if (test_thread_flag(TIF_SYSCALL_TRACE))
tracehook_report_syscall_exit(regs, 0);
diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S
index 00cad1005a16..ffa43464da00 100644
--- a/arch/mips/kernel/scall32-o32.S
+++ b/arch/mips/kernel/scall32-o32.S
@@ -361,7 +361,7 @@ EXPORT(sys_call_table)
PTR sys_writev
PTR sys_cacheflush
PTR sys_cachectl
- PTR sys_sysmips
+ PTR __sys_sysmips
PTR sys_ni_syscall /* 4150 */
PTR sys_getsid
PTR sys_fdatasync
diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S
index a6576cf1e6d9..e72f53630552 100644
--- a/arch/mips/kernel/scall64-64.S
+++ b/arch/mips/kernel/scall64-64.S
@@ -318,7 +318,7 @@ EXPORT(sys_call_table)
PTR sys_sched_getaffinity
PTR sys_cacheflush
PTR sys_cachectl
- PTR sys_sysmips
+ PTR __sys_sysmips
PTR sys_io_setup /* 5200 */
PTR sys_io_destroy
PTR sys_io_getevents
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index 9a47c1233d2a..dc33ef055fa2 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -307,7 +307,7 @@ EXPORT(sysn32_call_table)
PTR compat_sys_sched_getaffinity
PTR sys_cacheflush
PTR sys_cachectl
- PTR sys_sysmips
+ PTR __sys_sysmips
PTR compat_sys_io_setup /* 6200 */
PTR sys_io_destroy
PTR compat_sys_io_getevents
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index 8be0757e34cd..680f2cc13a6d 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -358,7 +358,7 @@ EXPORT(sys32_call_table)
PTR compat_sys_writev
PTR sys_cacheflush
PTR sys_cachectl
- PTR sys_sysmips
+ PTR __sys_sysmips
PTR sys_ni_syscall /* 4150 */
PTR sys_getsid
PTR sys_fdatasync
diff --git a/arch/mips/kernel/syscall.c b/arch/mips/kernel/syscall.c
index 4a4f9dda5658..1c864e20156f 100644
--- a/arch/mips/kernel/syscall.c
+++ b/arch/mips/kernel/syscall.c
@@ -28,6 +28,7 @@
#include <linux/elf.h>

#include <asm/asm.h>
+#include <asm/asm-eva.h>
#include <asm/branch.h>
#include <asm/cachectl.h>
#include <asm/cacheflush.h>
@@ -137,10 +138,12 @@ static inline int mips_atomic_set(unsigned long addr, unsigned long new)
__asm__ __volatile__ (
" .set arch=r4000 \n"
" li %[err], 0 \n"
- "1: ll %[old], (%[addr]) \n"
+ "1: \n"
+ user_ll("%[old]", "(%[addr])")
" move %[tmp], %[new] \n"
- "2: sc %[tmp], (%[addr]) \n"
- " bnez %[tmp], 4f \n"
+ "2: \n"
+ user_sc("%[tmp]", "(%[addr])")
+ " beqz %[tmp], 4f \n"
"3: \n"
" .subsection 2 \n"
"4: b 1b \n"
@@ -197,6 +200,12 @@ static inline int mips_atomic_set(unsigned long addr, unsigned long new)
unreachable();
}

+/*
+ * mips_atomic_set() normally returns directly via syscall_exit potentially
+ * clobbering static registers, so be sure to preserve them.
+ */
+save_static_function(sys_sysmips);
+
SYSCALL_DEFINE3(sysmips, long, cmd, long, arg1, long, arg2)
{
switch (cmd) {
diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c
index 22a2e15bd91b..bd0ad058c135 100644
--- a/arch/mips/math-emu/cp1emu.c
+++ b/arch/mips/math-emu/cp1emu.c
@@ -1856,6 +1856,35 @@ dcopuop:
return 0;
}

+/*
+ * Emulate FPU instructions.
+ *
+ * If we use FPU hardware, then we have been typically called to handle
+ * an unimplemented operation, such as where an operand is a NaN or
+ * denormalized. In that case exit the emulation loop after a single
+ * iteration so as to let hardware execute any subsequent instructions.
+ *
+ * If we have no FPU hardware or it has been disabled, then continue
+ * emulating floating-point instructions until one of these conditions
+ * has occurred:
+ *
+ * - a non-FPU instruction has been encountered,
+ *
+ * - an attempt to emulate has ended with a signal,
+ *
+ * - the ISA mode has been switched.
+ *
+ * We need to terminate the emulation loop if we got switched to the
+ * MIPS16 mode, whether supported or not, so that we do not attempt
+ * to emulate a MIPS16 instruction as a regular MIPS FPU instruction.
+ * Similarly if we got switched to the microMIPS mode and only the
+ * regular MIPS mode is supported, so that we do not attempt to emulate
+ * a microMIPS instruction as a regular MIPS FPU instruction. Or if
+ * we got switched to the regular MIPS mode and only the microMIPS mode
+ * is supported, so that we do not attempt to emulate a regular MIPS
+ * instruction that should cause an Address Error exception instead.
+ * For simplicity we always terminate upon an ISA mode switch.
+ */
int fpu_emulator_cop1Handler(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
int has_fpu, void *__user *fault_addr)
{
@@ -1943,6 +1972,15 @@ int fpu_emulator_cop1Handler(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
break;
if (sig)
break;
+ /*
+ * We have to check for the ISA bit explicitly here,
+ * because `get_isa16_mode' may return 0 if support
+ * for code compression has been globally disabled,
+ * or otherwise we may produce the wrong signal or
+ * even proceed successfully where we must not.
+ */
+ if ((xcp->cp0_epc ^ prevepc) & 0x1)
+ break;

cond_resched();
} while (xcp->cp0_epc > prevepc);
diff --git a/arch/powerpc/include/asm/atomic.h b/arch/powerpc/include/asm/atomic.h
index 512d2782b043..0d6670056cd2 100644
--- a/arch/powerpc/include/asm/atomic.h
+++ b/arch/powerpc/include/asm/atomic.h
@@ -453,7 +453,7 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
* Atomically increments @v by 1, so long as @v is non-zero.
* Returns non-zero if @v was non-zero, and zero otherwise.
*/
-static __inline__ long atomic64_inc_not_zero(atomic64_t *v)
+static __inline__ int atomic64_inc_not_zero(atomic64_t *v)
{
long t1, t2;

@@ -472,7 +472,7 @@ static __inline__ long atomic64_inc_not_zero(atomic64_t *v)
: "r" (&v->counter)
: "cc", "xer", "memory");

- return t1;
+ return t1 != 0;
}

#endif /* __powerpc64__ */
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index 32fd9f6ad6ef..d32ec6d3c726 100644
--- a/arch/powerpc/include/asm/reg.h
+++ b/arch/powerpc/include/asm/reg.h
@@ -1231,7 +1231,7 @@ static inline unsigned long mfvtb (void)
" .llong 0\n" \
".previous" \
: "=r" (rval) \
- : "i" (CPU_FTR_CELL_TB_BUG), "i" (SPRN_TBRL)); \
+ : "i" (CPU_FTR_CELL_TB_BUG), "i" (SPRN_TBRL) : "cr0"); \
rval;})
#else
#define mftb() ({unsigned long rval; \
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index ed671bd0690d..a3021e6ee14d 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -1950,6 +1950,7 @@ static int kvmppc_vcpu_run_hv(struct kvm_run *run, struct kvm_vcpu *vcpu)
{
int r;
int srcu_idx;
+ unsigned long ebb_regs[3] = {}; /* shut up GCC */

if (!vcpu->arch.sane) {
run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
@@ -1999,6 +2000,14 @@ static int kvmppc_vcpu_run_hv(struct kvm_run *run, struct kvm_vcpu *vcpu)
flush_fp_to_thread(current);
flush_altivec_to_thread(current);
flush_vsx_to_thread(current);
+
+ /* Save userspace EBB register values */
+ if (cpu_has_feature(CPU_FTR_ARCH_207S)) {
+ ebb_regs[0] = mfspr(SPRN_EBBHR);
+ ebb_regs[1] = mfspr(SPRN_EBBRR);
+ ebb_regs[2] = mfspr(SPRN_BESCR);
+ }
+
vcpu->arch.wqp = &vcpu->arch.vcore->wq;
vcpu->arch.pgdir = current->mm->pgd;
vcpu->arch.state = KVMPPC_VCPU_BUSY_IN_HOST;
@@ -2018,6 +2027,13 @@ static int kvmppc_vcpu_run_hv(struct kvm_run *run, struct kvm_vcpu *vcpu)
}
} while (is_kvmppc_resume_guest(r));

+ /* Restore userspace EBB register values */
+ if (cpu_has_feature(CPU_FTR_ARCH_207S)) {
+ mtspr(SPRN_EBBHR, ebb_regs[0]);
+ mtspr(SPRN_EBBRR, ebb_regs[1]);
+ mtspr(SPRN_BESCR, ebb_regs[2]);
+ }
+
out:
vcpu->arch.state = KVMPPC_VCPU_NOTREADY;
atomic_dec(&vcpu->kvm->arch.vcpus_running);
diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c
index 51b667316605..68ffdcbabdf1 100644
--- a/arch/powerpc/lib/sstep.c
+++ b/arch/powerpc/lib/sstep.c
@@ -687,8 +687,10 @@ int __kprobes analyse_instr(struct instruction_op *op, struct pt_regs *regs,
case 19:
switch ((instr >> 1) & 0x3ff) {
case 0: /* mcrf */
- rd = (instr >> 21) & 0x1c;
- ra = (instr >> 16) & 0x1c;
+ rd = 7 - ((instr >> 23) & 0x7);
+ ra = 7 - ((instr >> 18) & 0x7);
+ rd *= 4;
+ ra *= 4;
val = (regs->ccr >> ra) & 0xf;
regs->ccr = (regs->ccr & ~(0xfUL << rd)) | (val << rd);
goto instr_done;
@@ -967,6 +969,19 @@ int __kprobes analyse_instr(struct instruction_op *op, struct pt_regs *regs,
#endif

case 19: /* mfcr */
+ if ((instr >> 20) & 1) {
+ imm = 0xf0000000UL;
+ for (sh = 0; sh < 8; ++sh) {
+ if (instr & (0x80000 >> sh)) {
+ regs->gpr[rd] = regs->ccr & imm;
+ break;
+ }
+ imm >>= 4;
+ }
+
+ goto instr_done;
+ }
+
regs->gpr[rd] = regs->ccr;
regs->gpr[rd] &= 0xffffffffUL;
goto instr_done;
diff --git a/arch/s390/include/asm/syscall.h b/arch/s390/include/asm/syscall.h
index 5bc12598ae9e..13243715e5ad 100644
--- a/arch/s390/include/asm/syscall.h
+++ b/arch/s390/include/asm/syscall.h
@@ -64,6 +64,12 @@ static inline void syscall_get_arguments(struct task_struct *task,
{
unsigned long mask = -1UL;

+ /*
+ * No arguments for this syscall, there's nothing to do.
+ */
+ if (!n)
+ return;
+
BUG_ON(i + n > 6);
#ifdef CONFIG_COMPAT
if (test_tsk_thread_flag(task, TIF_31BIT))
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index a3eadfdc3e04..690a25967a10 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -316,6 +316,14 @@ static void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger,
struct mpc_intsrc mp_irq;

/*
+ * Check bus_irq boundary.
+ */
+ if (bus_irq >= NR_IRQS_LEGACY) {
+ pr_warn("Invalid bus_irq %u for legacy override\n", bus_irq);
+ return;
+ }
+
+ /*
* Convert 'gsi' to 'ioapic.pin'.
*/
ioapic = mp_find_ioapic(gsi);
diff --git a/arch/x86/kernel/rtc.c b/arch/x86/kernel/rtc.c
index ca9622a25e95..fe3dbfe0c4a5 100644
--- a/arch/x86/kernel/rtc.c
+++ b/arch/x86/kernel/rtc.c
@@ -170,7 +170,7 @@ static struct platform_device rtc_device = {
static __init int add_rtc_cmos(void)
{
#ifdef CONFIG_PNP
- static const char * const const ids[] __initconst =
+ static const char * const ids[] __initconst =
{ "PNP0b00", "PNP0b01", "PNP0b02", };
struct pnp_dev *dev;
struct pnp_id *id;
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index fb83d4acd400..ad7e3fb0ea3e 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -1673,7 +1673,7 @@ int pm_genpd_add_subdomain_names(const char *master_name,
int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
struct generic_pm_domain *subdomain)
{
- struct gpd_link *link;
+ struct gpd_link *l, *link;
int ret = -EINVAL;

if (IS_ERR_OR_NULL(genpd) || IS_ERR_OR_NULL(subdomain))
@@ -1682,7 +1682,7 @@ int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
start:
genpd_acquire_lock(genpd);

- list_for_each_entry(link, &genpd->master_links, master_node) {
+ list_for_each_entry_safe(link, l, &genpd->master_links, master_node) {
if (link->slave != subdomain)
continue;

@@ -2056,10 +2056,10 @@ EXPORT_SYMBOL_GPL(__of_genpd_add_provider);
*/
void of_genpd_del_provider(struct device_node *np)
{
- struct of_genpd_provider *cp;
+ struct of_genpd_provider *cp, *tmp;

mutex_lock(&of_genpd_mutex);
- list_for_each_entry(cp, &of_genpd_providers, link) {
+ list_for_each_entry_safe(cp, tmp, &of_genpd_providers, link) {
if (cp->node == np) {
list_del(&cp->link);
of_node_put(cp->node);
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
index c4f8e8f172cd..e8075400fc1b 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -330,6 +330,13 @@ static bool drm_dp_sideband_msg_build(struct drm_dp_sideband_msg_rx *msg,
return false;
}

+ /*
+ * ignore out-of-order messages or messages that are part of a
+ * failed transaction
+ */
+ if (!recv_hdr.somt && !msg->have_somt)
+ return false;
+
/* get length contained in this portion */
msg->curchunk_len = recv_hdr.msg_len;
msg->curchunk_hdrlen = hdrlen;
@@ -2049,7 +2056,7 @@ out_unlock:
}
EXPORT_SYMBOL(drm_dp_mst_topology_mgr_resume);

-static void drm_dp_get_one_sb_msg(struct drm_dp_mst_topology_mgr *mgr, bool up)
+static bool drm_dp_get_one_sb_msg(struct drm_dp_mst_topology_mgr *mgr, bool up)
{
int len;
u8 replyblock[32];
@@ -2064,12 +2071,12 @@ static void drm_dp_get_one_sb_msg(struct drm_dp_mst_topology_mgr *mgr, bool up)
replyblock, len);
if (ret != len) {
DRM_DEBUG_KMS("failed to read DPCD down rep %d %d\n", len, ret);
- return;
+ return false;
}
ret = drm_dp_sideband_msg_build(msg, replyblock, len, true);
if (!ret) {
DRM_DEBUG_KMS("sideband msg build failed %d\n", replyblock[0]);
- return;
+ return false;
}
replylen = msg->curchunk_len + msg->curchunk_hdrlen;

@@ -2081,21 +2088,32 @@ static void drm_dp_get_one_sb_msg(struct drm_dp_mst_topology_mgr *mgr, bool up)
ret = drm_dp_dpcd_read(mgr->aux, basereg + curreply,
replyblock, len);
if (ret != len) {
- DRM_DEBUG_KMS("failed to read a chunk\n");
+ DRM_DEBUG_KMS("failed to read a chunk (len %d, ret %d)\n",
+ len, ret);
+ return false;
}
+
ret = drm_dp_sideband_msg_build(msg, replyblock, len, false);
- if (ret == false)
+ if (!ret) {
DRM_DEBUG_KMS("failed to build sideband msg\n");
+ return false;
+ }
+
curreply += len;
replylen -= len;
}
+ return true;
}

static int drm_dp_mst_handle_down_rep(struct drm_dp_mst_topology_mgr *mgr)
{
int ret = 0;

- drm_dp_get_one_sb_msg(mgr, false);
+ if (!drm_dp_get_one_sb_msg(mgr, false)) {
+ memset(&mgr->down_rep_recv, 0,
+ sizeof(struct drm_dp_sideband_msg_rx));
+ return 0;
+ }

if (mgr->down_rep_recv.have_eomt) {
struct drm_dp_sideband_msg_tx *txmsg;
@@ -2151,7 +2169,12 @@ static int drm_dp_mst_handle_down_rep(struct drm_dp_mst_topology_mgr *mgr)
static int drm_dp_mst_handle_up_req(struct drm_dp_mst_topology_mgr *mgr)
{
int ret = 0;
- drm_dp_get_one_sb_msg(mgr, true);
+
+ if (!drm_dp_get_one_sb_msg(mgr, true)) {
+ memset(&mgr->up_req_recv, 0,
+ sizeof(struct drm_dp_sideband_msg_rx));
+ return 0;
+ }

if (mgr->up_req_recv.have_eomt) {
struct drm_dp_sideband_msg_req_body msg;
@@ -2203,7 +2226,9 @@ static int drm_dp_mst_handle_up_req(struct drm_dp_mst_topology_mgr *mgr)
DRM_DEBUG_KMS("Got RSN: pn: %d avail_pbn %d\n", msg.u.resource_stat.port_number, msg.u.resource_stat.available_pbn);
}

- drm_dp_put_mst_branch_device(mstb);
+ if (mstb)
+ drm_dp_put_mst_branch_device(mstb);
+
memset(&mgr->up_req_recv, 0, sizeof(struct drm_dp_sideband_msg_rx));
}
return ret;
diff --git a/drivers/gpu/drm/radeon/ci_dpm.c b/drivers/gpu/drm/radeon/ci_dpm.c
index c1652a047581..d4fd2068aa6d 100644
--- a/drivers/gpu/drm/radeon/ci_dpm.c
+++ b/drivers/gpu/drm/radeon/ci_dpm.c
@@ -738,6 +738,12 @@ bool ci_dpm_vblank_too_short(struct radeon_device *rdev)
if (r600_dpm_get_vrefresh(rdev) > 120)
return true;

+ /* disable mclk switching if the refresh is >120Hz, even if the
+ * blanking period would allow it
+ */
+ if (r600_dpm_get_vrefresh(rdev) > 120)
+ return true;
+
if (vblank_time < switch_limit)
return true;
else
diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
index 1e25a0616ca0..a4ea1342346d 100644
--- a/drivers/input/serio/i8042.c
+++ b/drivers/input/serio/i8042.c
@@ -397,8 +397,10 @@ static int i8042_start(struct serio *serio)
{
struct i8042_port *port = serio->port_data;

+ spin_lock_irq(&i8042_lock);
port->exists = true;
- mb();
+ spin_unlock_irq(&i8042_lock);
+
return 0;
}

@@ -411,16 +413,20 @@ static void i8042_stop(struct serio *serio)
{
struct i8042_port *port = serio->port_data;

+ spin_lock_irq(&i8042_lock);
port->exists = false;
+ port->serio = NULL;
+ spin_unlock_irq(&i8042_lock);

/*
+ * We need to make sure that interrupt handler finishes using
+ * our serio port before we return from this function.
* We synchronize with both AUX and KBD IRQs because there is
* a (very unlikely) chance that AUX IRQ is raised for KBD port
* and vice versa.
*/
synchronize_irq(I8042_AUX_IRQ);
synchronize_irq(I8042_KBD_IRQ);
- port->serio = NULL;
}

/*
@@ -537,7 +543,7 @@ static irqreturn_t i8042_interrupt(int irq, void *dev_id)

spin_unlock_irqrestore(&i8042_lock, flags);

- if (likely(port->exists && !filtered))
+ if (likely(serio && !filtered))
serio_interrupt(serio, data, dfl);

out:
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index b194ccfd3a36..63e57254ff62 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1120,13 +1120,16 @@ static void make_request(struct mddev *mddev, struct bio * bio)
*/
DEFINE_WAIT(w);
for (;;) {
- flush_signals(current);
+ sigset_t full, old;
prepare_to_wait(&conf->wait_barrier,
&w, TASK_INTERRUPTIBLE);
if (bio_end_sector(bio) <= mddev->suspend_lo ||
bio->bi_iter.bi_sector >= mddev->suspend_hi)
break;
+ sigfillset(&full);
+ sigprocmask(SIG_BLOCK, &full, &old);
schedule();
+ sigprocmask(SIG_SETMASK, &old, NULL);
}
finish_wait(&conf->wait_barrier, &w);
}
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 48096d09fef3..604c5dc95ffc 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -4705,12 +4705,15 @@ static void make_request(struct mddev *mddev, struct bio * bi)
* userspace, we want an interruptible
* wait.
*/
- flush_signals(current);
prepare_to_wait(&conf->wait_for_overlap,
&w, TASK_INTERRUPTIBLE);
if (logical_sector >= mddev->suspend_lo &&
logical_sector < mddev->suspend_hi) {
+ sigset_t full, old;
+ sigfillset(&full);
+ sigprocmask(SIG_BLOCK, &full, &old);
schedule();
+ sigprocmask(SIG_SETMASK, &old, NULL);
do_prepare = true;
}
goto retry;
@@ -6719,12 +6722,10 @@ static void end_reshape(struct r5conf *conf)
{

if (!test_bit(MD_RECOVERY_INTR, &conf->mddev->recovery)) {
- struct md_rdev *rdev;

spin_lock_irq(&conf->device_lock);
conf->previous_raid_disks = conf->raid_disks;
- rdev_for_each(rdev, conf->mddev)
- rdev->data_offset = rdev->new_data_offset;
+ md_finish_reshape(conf->mddev);
smp_wmb();
conf->reshape_progress = MaxSector;
spin_unlock_irq(&conf->device_lock);
diff --git a/drivers/media/rc/imon.c b/drivers/media/rc/imon.c
index 65f80b8b9f7a..eb9e7feb9b13 100644
--- a/drivers/media/rc/imon.c
+++ b/drivers/media/rc/imon.c
@@ -1629,7 +1629,7 @@ static void imon_incoming_packet(struct imon_context *ictx,
if (kc == KEY_KEYBOARD && !ictx->release_code) {
ictx->last_keycode = kc;
if (!nomouse) {
- ictx->pad_mouse = ~(ictx->pad_mouse) & 0x1;
+ ictx->pad_mouse = !ictx->pad_mouse;
dev_dbg(dev, "toggling to %s mode\n",
ictx->pad_mouse ? "mouse" : "keyboard");
spin_unlock_irqrestore(&ictx->kc_lock, flags);
diff --git a/drivers/misc/enclosure.c b/drivers/misc/enclosure.c
index 2cf2bbc0b927..6cab9411b158 100644
--- a/drivers/misc/enclosure.c
+++ b/drivers/misc/enclosure.c
@@ -320,6 +320,7 @@ int enclosure_add_device(struct enclosure_device *edev, int component,
struct device *dev)
{
struct enclosure_component *cdev;
+ int err;

if (!edev || component >= edev->components)
return -EINVAL;
@@ -329,12 +330,17 @@ int enclosure_add_device(struct enclosure_device *edev, int component,
if (cdev->dev == dev)
return -EEXIST;

- if (cdev->dev)
+ if (cdev->dev) {
enclosure_remove_links(cdev);
-
- put_device(cdev->dev);
+ put_device(cdev->dev);
+ }
cdev->dev = get_device(dev);
- return enclosure_add_links(cdev);
+ err = enclosure_add_links(cdev);
+ if (err) {
+ put_device(cdev->dev);
+ cdev->dev = NULL;
+ }
+ return err;
}
EXPORT_SYMBOL_GPL(enclosure_add_device);

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.c b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
index 1e8ea5e4d4ca..dbb9a11bc01b 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
@@ -1707,8 +1707,6 @@ static void ar9003_hw_spectral_scan_wait(struct ath_hw *ah)
static void ar9003_hw_tx99_start(struct ath_hw *ah, u32 qnum)
{
REG_SET_BIT(ah, AR_PHY_TEST, PHY_AGC_CLR);
- REG_SET_BIT(ah, 0x9864, 0x7f000);
- REG_SET_BIT(ah, 0x9924, 0x7f00fe);
REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_DIS);
REG_WRITE(ah, AR_CR, AR_CR_RXD);
REG_WRITE(ah, AR_DLCL_IFS(qnum), 0);
diff --git a/drivers/net/wireless/ath/ath9k/tx99.c b/drivers/net/wireless/ath/ath9k/tx99.c
index 40ab65e6882f..2ea3589f709f 100644
--- a/drivers/net/wireless/ath/ath9k/tx99.c
+++ b/drivers/net/wireless/ath/ath9k/tx99.c
@@ -190,22 +190,27 @@ static ssize_t write_file_tx99(struct file *file, const char __user *user_buf,
if (strtobool(buf, &start))
return -EINVAL;

+ mutex_lock(&sc->mutex);
+
if (start == sc->tx99_state) {
if (!start)
- return count;
+ goto out;
ath_dbg(common, XMIT, "Resetting TX99\n");
ath9k_tx99_deinit(sc);
}

if (!start) {
ath9k_tx99_deinit(sc);
- return count;
+ goto out;
}

r = ath9k_tx99_init(sc);
- if (r)
+ if (r) {
+ mutex_unlock(&sc->mutex);
return r;
-
+ }
+out:
+ mutex_unlock(&sc->mutex);
return count;
}

diff --git a/drivers/of/device.c b/drivers/of/device.c
index 46d6c75c1404..de20165bad48 100644
--- a/drivers/of/device.c
+++ b/drivers/of/device.c
@@ -128,6 +128,7 @@ ssize_t of_device_get_modalias(struct device *dev, char *str, ssize_t len)

return tsize;
}
+EXPORT_SYMBOL_GPL(of_device_get_modalias);

/**
* of_device_uevent - Display OF related uevent information
@@ -190,3 +191,4 @@ int of_device_uevent_modalias(struct device *dev, struct kobj_uevent_env *env)

return 0;
}
+EXPORT_SYMBOL_GPL(of_device_uevent_modalias);
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index b720e7816a72..e7adfbd2d482 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -925,6 +925,7 @@ static int pci_pm_thaw_noirq(struct device *dev)
return pci_legacy_resume_early(dev);

pci_update_current_state(pci_dev, PCI_D0);
+ pci_restore_state(pci_dev);

if (drv && drv->pm && drv->pm->thaw_noirq)
error = drv->pm->thaw_noirq(dev);
diff --git a/drivers/spmi/spmi.c b/drivers/spmi/spmi.c
index 1d92f5103ebf..ee40bb133051 100644
--- a/drivers/spmi/spmi.c
+++ b/drivers/spmi/spmi.c
@@ -353,11 +353,23 @@ static int spmi_drv_remove(struct device *dev)
return 0;
}

+static int spmi_drv_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+ int ret;
+
+ ret = of_device_uevent_modalias(dev, env);
+ if (ret != -ENODEV)
+ return ret;
+
+ return 0;
+}
+
static struct bus_type spmi_bus_type = {
.name = "spmi",
.match = spmi_device_match,
.probe = spmi_drv_probe,
.remove = spmi_drv_remove,
+ .uevent = spmi_drv_uevent,
};

/**
diff --git a/drivers/staging/rtl8188eu/os_dep/usb_intf.c b/drivers/staging/rtl8188eu/os_dep/usb_intf.c
index 2f87150a21b7..e33f0458fafc 100644
--- a/drivers/staging/rtl8188eu/os_dep/usb_intf.c
+++ b/drivers/staging/rtl8188eu/os_dep/usb_intf.c
@@ -48,6 +48,7 @@ static struct usb_device_id rtw_usb_id_tbl[] = {
{USB_DEVICE(0x2001, 0x330F)}, /* DLink DWA-125 REV D1 */
{USB_DEVICE(0x2001, 0x3310)}, /* Dlink DWA-123 REV D1 */
{USB_DEVICE(0x2001, 0x3311)}, /* DLink GO-USB-N150 REV B1 */
+ {USB_DEVICE(0x2357, 0x010c)}, /* TP-Link TL-WN722N v2 */
{USB_DEVICE(0x0df6, 0x0076)}, /* Sitecom N150 v2 */
{} /* Terminating entry */
};
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index d206274e6676..e59c8b3fd4f1 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -693,6 +693,15 @@ void target_complete_cmd(struct se_cmd *cmd, u8 scsi_status)
if (cmd->transport_state & CMD_T_ABORTED ||
cmd->transport_state & CMD_T_STOP) {
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
+ /*
+ * If COMPARE_AND_WRITE was stopped by __transport_wait_for_tasks(),
+ * release se_device->caw_sem obtained by sbc_compare_and_write()
+ * since target_complete_ok_work() or target_complete_failure_work()
+ * won't be called to invoke the normal CAW completion callbacks.
+ */
+ if (cmd->se_cmd_flags & SCF_COMPARE_AND_WRITE) {
+ up(&dev->caw_sem);
+ }
complete_all(&cmd->t_transport_stop_comp);
return;
} else if (!success) {
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index c84f7a3dd5f2..15ce4dc6eee6 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1776,6 +1776,9 @@ static const struct usb_device_id acm_ids[] = {
{ USB_DEVICE(0x1576, 0x03b1), /* Maretron USB100 */
.driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
},
+ { USB_DEVICE(0xfff0, 0x0100), /* DATECS FP-2000 */
+ .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
+ },

{ USB_DEVICE(0x2912, 0x0001), /* ATOL FPrint */
.driver_info = CLEAR_HALT_CONDITIONS,
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index 0fa8fd9adeba..08dbe69c1942 100644
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -651,6 +651,9 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd,
clear_bit(wIndex, &bus_state->resuming_ports);

set_bit(wIndex, &bus_state->rexit_ports);
+
+ xhci_test_and_clear_bit(xhci, port_array, wIndex,
+ PORT_PLC);
xhci_set_link_state(xhci, port_array, wIndex,
XDEV_U0);

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 4e0121100327..1b70797a286d 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -782,13 +782,16 @@ static void xhci_kill_endpoint_urbs(struct xhci_hcd *xhci,
(ep->ep_state & EP_GETTING_NO_STREAMS)) {
int stream_id;

- for (stream_id = 0; stream_id < ep->stream_info->num_streams;
+ for (stream_id = 1; stream_id < ep->stream_info->num_streams;
stream_id++) {
+ ring = ep->stream_info->stream_rings[stream_id];
+ if (!ring)
+ continue;
+
xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,
"Killing URBs for slot ID %u, ep index %u, stream %u",
- slot_id, ep_index, stream_id + 1);
- xhci_kill_ring_urbs(xhci,
- ep->stream_info->stream_rings[stream_id]);
+ slot_id, ep_index, stream_id);
+ xhci_kill_ring_urbs(xhci, ring);
}
} else {
ring = ep->ring;
diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c
index d51f47892386..379bc511ef66 100644
--- a/drivers/usb/renesas_usbhs/common.c
+++ b/drivers/usb/renesas_usbhs/common.c
@@ -699,8 +699,10 @@ static int usbhsc_resume(struct device *dev)
struct usbhs_priv *priv = dev_get_drvdata(dev);
struct platform_device *pdev = usbhs_priv_to_pdev(priv);

- if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
+ if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) {
usbhsc_power_ctrl(priv, 1);
+ usbhs_mod_autonomy_mode(priv);
+ }

usbhs_platform_call(priv, phy_reset, pdev);

diff --git a/drivers/usb/storage/isd200.c b/drivers/usb/storage/isd200.c
index 599d8bff26c3..420e096ac09b 100644
--- a/drivers/usb/storage/isd200.c
+++ b/drivers/usb/storage/isd200.c
@@ -1522,8 +1522,11 @@ static void isd200_ata_command(struct scsi_cmnd *srb, struct us_data *us)

/* Make sure driver was initialized */

- if (us->extra == NULL)
+ if (us->extra == NULL) {
usb_stor_dbg(us, "ERROR Driver not initialized\n");
+ srb->result = DID_ERROR << 16;
+ return;
+ }

scsi_set_resid(srb, 0);
/* scsi_bufflen might change in protocol translation to ata */
diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index f018d8d0f975..7b2f32726c1a 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -278,6 +278,34 @@ static void vfio_group_put(struct vfio_group *group)
kref_put_mutex(&group->kref, vfio_group_release, &vfio.group_lock);
}

+struct vfio_group_put_work {
+ struct work_struct work;
+ struct vfio_group *group;
+};
+
+static void vfio_group_put_bg(struct work_struct *work)
+{
+ struct vfio_group_put_work *do_work;
+
+ do_work = container_of(work, struct vfio_group_put_work, work);
+
+ vfio_group_put(do_work->group);
+ kfree(do_work);
+}
+
+static void vfio_group_schedule_put(struct vfio_group *group)
+{
+ struct vfio_group_put_work *do_work;
+
+ do_work = kmalloc(sizeof(*do_work), GFP_KERNEL);
+ if (WARN_ON(!do_work))
+ return;
+
+ INIT_WORK(&do_work->work, vfio_group_put_bg);
+ do_work->group = group;
+ schedule_work(&do_work->work);
+}
+
/* Assume group_lock or group reference is held */
static void vfio_group_get(struct vfio_group *group)
{
@@ -553,7 +581,14 @@ static int vfio_iommu_group_notifier(struct notifier_block *nb,
break;
}

- vfio_group_put(group);
+ /*
+ * If we're the last reference to the group, the group will be
+ * released, which includes unregistering the iommu group notifier.
+ * We hold a read-lock on that notifier list, unregistering needs
+ * a write-lock... deadlock. Release our reference asynchronously
+ * to avoid that situation.
+ */
+ vfio_group_schedule_put(group);
return NOTIFY_OK;
}

@@ -1401,6 +1436,15 @@ void vfio_group_put_external_user(struct vfio_group *group)
}
EXPORT_SYMBOL_GPL(vfio_group_put_external_user);

+bool vfio_external_group_match_file(struct vfio_group *test_group,
+ struct file *filep)
+{
+ struct vfio_group *group = filep->private_data;
+
+ return (filep->f_op == &vfio_group_fops) && (group == test_group);
+}
+EXPORT_SYMBOL_GPL(vfio_external_group_match_file);
+
int vfio_external_user_iommu_id(struct vfio_group *group)
{
return iommu_group_id(group->iommu_group);
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index a74f433a93b6..881af94ac68f 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -1383,6 +1383,7 @@ struct smb_version_operations smb20_operations = {
.clear_stats = smb2_clear_stats,
.print_stats = smb2_print_stats,
.is_oplock_break = smb2_is_valid_oplock_break,
+ .handle_cancelled_mid = smb2_handle_cancelled_mid,
.downgrade_oplock = smb2_downgrade_oplock,
.need_neg = smb2_need_neg,
.negotiate = smb2_negotiate,
@@ -1462,7 +1463,6 @@ struct smb_version_operations smb21_operations = {
.print_stats = smb2_print_stats,
.is_oplock_break = smb2_is_valid_oplock_break,
.handle_cancelled_mid = smb2_handle_cancelled_mid,
- .handle_cancelled_mid = smb2_handle_cancelled_mid,
.downgrade_oplock = smb2_downgrade_oplock,
.need_neg = smb2_need_neg,
.negotiate = smb2_negotiate,
@@ -1545,7 +1545,6 @@ struct smb_version_operations smb30_operations = {
.dump_share_caps = smb2_dump_share_caps,
.is_oplock_break = smb2_is_valid_oplock_break,
.handle_cancelled_mid = smb2_handle_cancelled_mid,
- .handle_cancelled_mid = smb2_handle_cancelled_mid,
.downgrade_oplock = smb2_downgrade_oplock,
.need_neg = smb2_need_neg,
.negotiate = smb2_negotiate,
diff --git a/fs/f2fs/acl.c b/fs/f2fs/acl.c
index f12d5c5ecc31..bafe6df6016f 100644
--- a/fs/f2fs/acl.c
+++ b/fs/f2fs/acl.c
@@ -206,7 +206,7 @@ static int __f2fs_set_acl(struct inode *inode, int type,
switch (type) {
case ACL_TYPE_ACCESS:
name_index = F2FS_XATTR_INDEX_POSIX_ACL_ACCESS;
- if (acl) {
+ if (acl && !ipage) {
error = posix_acl_update_mode(inode, &inode->i_mode, &acl);
if (error)
return error;
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 29b7a75064af..43d63a4d9a92 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1141,11 +1141,13 @@ static int nfs_lookup_revalidate(struct dentry *dentry, unsigned int flags)
/* Force a full look up iff the parent directory has changed */
if (!nfs_is_exclusive_create(dir, flags) &&
nfs_check_verifier(dir, dentry, flags & LOOKUP_RCU)) {
-
- if (nfs_lookup_verify_inode(inode, flags)) {
+ error = nfs_lookup_verify_inode(inode, flags);
+ if (error) {
if (flags & LOOKUP_RCU)
return -ECHILD;
- goto out_zap_parent;
+ if (error == -ESTALE)
+ goto out_zap_parent;
+ goto out_error;
}
goto out_valid;
}
@@ -1169,8 +1171,10 @@ static int nfs_lookup_revalidate(struct dentry *dentry, unsigned int flags)
trace_nfs_lookup_revalidate_enter(dir, dentry, flags);
error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr, label);
trace_nfs_lookup_revalidate_exit(dir, dentry, flags, error);
- if (error)
+ if (error == -ESTALE || error == -ENOENT)
goto out_bad;
+ if (error)
+ goto out_error;
if (nfs_compare_fh(NFS_FH(inode), fhandle))
goto out_bad;
if ((error = nfs_refresh_inode(inode, fattr)) != 0)
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index aa9eadc55834..596374ecbd41 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -1177,9 +1177,9 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat
return 0;
/* Has the inode gone and changed behind our back? */
if ((fattr->valid & NFS_ATTR_FATTR_FILEID) && nfsi->fileid != fattr->fileid)
- return -EIO;
+ return -ESTALE;
if ((fattr->valid & NFS_ATTR_FATTR_TYPE) && (inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT))
- return -EIO;
+ return -ESTALE;

if ((fattr->valid & NFS_ATTR_FATTR_CHANGE) != 0 &&
inode->i_version != fattr->change_attr)
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 9ae690d4cfeb..0c1ca254d616 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -1237,8 +1237,8 @@ int udf_setsize(struct inode *inode, loff_t newsize)
return err;
}
set_size:
- truncate_setsize(inode, newsize);
up_write(&iinfo->i_data_sem);
+ truncate_setsize(inode, newsize);
} else {
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
down_write(&iinfo->i_data_sem);
@@ -1255,9 +1255,9 @@ set_size:
udf_get_block);
if (err)
return err;
+ truncate_setsize(inode, newsize);
down_write(&iinfo->i_data_sem);
udf_clear_extent_cache(inode);
- truncate_setsize(inode, newsize);
udf_truncate_extents(inode);
up_write(&iinfo->i_data_sem);
}
diff --git a/include/linux/stddef.h b/include/linux/stddef.h
index f4aec0e75c3a..9c61c7cda936 100644
--- a/include/linux/stddef.h
+++ b/include/linux/stddef.h
@@ -3,7 +3,6 @@

#include <uapi/linux/stddef.h>

-
#undef NULL
#define NULL ((void *)0)

@@ -14,8 +13,18 @@ enum {

#undef offsetof
#ifdef __compiler_offsetof
-#define offsetof(TYPE,MEMBER) __compiler_offsetof(TYPE,MEMBER)
+#define offsetof(TYPE, MEMBER) __compiler_offsetof(TYPE, MEMBER)
#else
-#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+#define offsetof(TYPE, MEMBER) ((size_t)&((TYPE *)0)->MEMBER)
#endif
+
+/**
+ * offsetofend(TYPE, MEMBER)
+ *
+ * @TYPE: The type of the structure
+ * @MEMBER: The member within the structure to get the end offset of
+ */
+#define offsetofend(TYPE, MEMBER) \
+ (offsetof(TYPE, MEMBER) + sizeof(((TYPE *)0)->MEMBER))
+
#endif
diff --git a/include/linux/vfio.h b/include/linux/vfio.h
index d3204115f15d..4db76b31c43c 100644
--- a/include/linux/vfio.h
+++ b/include/linux/vfio.h
@@ -76,24 +76,13 @@ extern int vfio_register_iommu_driver(const struct vfio_iommu_driver_ops *ops);
extern void vfio_unregister_iommu_driver(
const struct vfio_iommu_driver_ops *ops);

-/**
- * offsetofend(TYPE, MEMBER)
- *
- * @TYPE: The type of the structure
- * @MEMBER: The member within the structure to get the end offset of
- *
- * Simple helper macro for dealing with variable sized structures passed
- * from user space. This allows us to easily determine if the provided
- * structure is sized to include various fields.
- */
-#define offsetofend(TYPE, MEMBER) \
- (offsetof(TYPE, MEMBER) + sizeof(((TYPE *)0)->MEMBER))
-
/*
* External user API
*/
extern struct vfio_group *vfio_group_get_external_user(struct file *filep);
extern void vfio_group_put_external_user(struct vfio_group *group);
+extern bool vfio_external_group_match_file(struct vfio_group *group,
+ struct file *filep);
extern int vfio_external_user_iommu_id(struct vfio_group *group);
extern long vfio_external_check_extension(struct vfio_group *group,
unsigned long arg);
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 050b4e399738..4886c0e97bbd 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -5761,21 +5761,6 @@ static void perf_log_throttle(struct perf_event *event, int enable)
perf_output_end(&handle);
}

-static bool sample_is_allowed(struct perf_event *event, struct pt_regs *regs)
-{
- /*
- * Due to interrupt latency (AKA "skid"), we may enter the
- * kernel before taking an overflow, even if the PMU is only
- * counting user events.
- * To avoid leaking information to userspace, we must always
- * reject kernel samples when exclude_kernel is set.
- */
- if (event->attr.exclude_kernel && !user_mode(regs))
- return false;
-
- return true;
-}
-
/*
* Generic event overflow handling, sampling.
*/
@@ -5823,12 +5808,6 @@ static int __perf_event_overflow(struct perf_event *event,
}

/*
- * For security, drop the skid kernel samples if necessary.
- */
- if (!sample_is_allowed(event, regs))
- return ret;
-
- /*
* XXX event_limit might not quite work as expected on inherited
* events
*/
diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c
index 3d7fb75354b7..119847b93ba6 100644
--- a/kernel/time/alarmtimer.c
+++ b/kernel/time/alarmtimer.c
@@ -619,7 +619,8 @@ static int alarm_timer_set(struct k_itimer *timr, int flags,
* Rate limit to the tick as a hot fix to prevent DOS. Will be
* mopped up later.
*/
- if (ktime_to_ns(timr->it.alarm.interval) < TICK_NSEC)
+ if (timr->it.alarm.interval.tv64 &&
+ ktime_to_ns(timr->it.alarm.interval) < TICK_NSEC)
timr->it.alarm.interval = ktime_set(0, TICK_NSEC);

exp = timespec_to_ktime(new_setting->it_value);
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 5b83ac63e7e9..111dfd986dbf 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -6405,6 +6405,7 @@ static int instance_delete(const char *name)
debugfs_remove_recursive(tr->dir);
free_trace_buffers(tr);

+ free_cpumask_var(tr->tracing_cpumask);
kfree(tr->name);
kfree(tr);

diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index 9ebc394ea5e5..39b04f919cb6 100644
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -22,6 +22,7 @@

#include <linux/crypto.h>
#include <linux/scatterlist.h>
+#include <crypto/algapi.h>
#include <crypto/b128ops.h>

#include <net/bluetooth/bluetooth.h>
@@ -163,7 +164,7 @@ bool smp_irk_matches(struct hci_dev *hdev, u8 irk[16], bdaddr_t *bdaddr)
if (err)
return false;

- return !memcmp(bdaddr->b, hash, 3);
+ return !crypto_memneq(bdaddr->b, hash, 3);
}

int smp_generate_rpa(struct hci_dev *hdev, u8 irk[16], bdaddr_t *rpa)
@@ -584,7 +585,7 @@ static u8 smp_random(struct smp_chan *smp)
if (ret)
return SMP_UNSPECIFIED;

- if (memcmp(smp->pcnf, confirm, sizeof(smp->pcnf)) != 0) {
+ if (crypto_memneq(smp->pcnf, confirm, sizeof(smp->pcnf))) {
BT_ERR("Pairing failed (confirmation values mismatch)");
return SMP_CONFIRM_FAILED;
}
diff --git a/net/key/af_key.c b/net/key/af_key.c
index d49fa0dd2634..08e2c6159e03 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -65,6 +65,10 @@ struct pfkey_sock {
} dump;
};

+static int parse_sockaddr_pair(struct sockaddr *sa, int ext_len,
+ xfrm_address_t *saddr, xfrm_address_t *daddr,
+ u16 *family);
+
static inline struct pfkey_sock *pfkey_sk(struct sock *sk)
{
return (struct pfkey_sock *)sk;
@@ -1921,19 +1925,14 @@ parse_ipsecrequest(struct xfrm_policy *xp, struct sadb_x_ipsecrequest *rq)

/* addresses present only in tunnel mode */
if (t->mode == XFRM_MODE_TUNNEL) {
- u8 *sa = (u8 *) (rq + 1);
- int family, socklen;
+ int err;

- family = pfkey_sockaddr_extract((struct sockaddr *)sa,
- &t->saddr);
- if (!family)
- return -EINVAL;
-
- socklen = pfkey_sockaddr_len(family);
- if (pfkey_sockaddr_extract((struct sockaddr *)(sa + socklen),
- &t->id.daddr) != family)
- return -EINVAL;
- t->encap_family = family;
+ err = parse_sockaddr_pair(
+ (struct sockaddr *)(rq + 1),
+ rq->sadb_x_ipsecrequest_len - sizeof(*rq),
+ &t->saddr, &t->id.daddr, &t->encap_family);
+ if (err)
+ return err;
} else
t->encap_family = xp->family;

@@ -1953,7 +1952,11 @@ parse_ipsecrequests(struct xfrm_policy *xp, struct sadb_x_policy *pol)
if (pol->sadb_x_policy_len * 8 < sizeof(struct sadb_x_policy))
return -EINVAL;

- while (len >= sizeof(struct sadb_x_ipsecrequest)) {
+ while (len >= sizeof(*rq)) {
+ if (len < rq->sadb_x_ipsecrequest_len ||
+ rq->sadb_x_ipsecrequest_len < sizeof(*rq))
+ return -EINVAL;
+
if ((err = parse_ipsecrequest(xp, rq)) < 0)
return err;
len -= rq->sadb_x_ipsecrequest_len;
@@ -2416,7 +2419,6 @@ out:
return err;
}

-#ifdef CONFIG_NET_KEY_MIGRATE
static int pfkey_sockaddr_pair_size(sa_family_t family)
{
return PFKEY_ALIGN8(pfkey_sockaddr_len(family) * 2);
@@ -2428,7 +2430,7 @@ static int parse_sockaddr_pair(struct sockaddr *sa, int ext_len,
{
int af, socklen;

- if (ext_len < pfkey_sockaddr_pair_size(sa->sa_family))
+ if (ext_len < 2 || ext_len < pfkey_sockaddr_pair_size(sa->sa_family))
return -EINVAL;

af = pfkey_sockaddr_extract(sa, saddr);
@@ -2444,6 +2446,7 @@ static int parse_sockaddr_pair(struct sockaddr *sa, int ext_len,
return 0;
}

+#ifdef CONFIG_NET_KEY_MIGRATE
static int ipsecrequests_to_migrate(struct sadb_x_ipsecrequest *rq1, int len,
struct xfrm_migrate *m)
{
@@ -2451,13 +2454,14 @@ static int ipsecrequests_to_migrate(struct sadb_x_ipsecrequest *rq1, int len,
struct sadb_x_ipsecrequest *rq2;
int mode;

- if (len <= sizeof(struct sadb_x_ipsecrequest) ||
- len < rq1->sadb_x_ipsecrequest_len)
+ if (len < sizeof(*rq1) ||
+ len < rq1->sadb_x_ipsecrequest_len ||
+ rq1->sadb_x_ipsecrequest_len < sizeof(*rq1))
return -EINVAL;

/* old endoints */
err = parse_sockaddr_pair((struct sockaddr *)(rq1 + 1),
- rq1->sadb_x_ipsecrequest_len,
+ rq1->sadb_x_ipsecrequest_len - sizeof(*rq1),
&m->old_saddr, &m->old_daddr,
&m->old_family);
if (err)
@@ -2466,13 +2470,14 @@ static int ipsecrequests_to_migrate(struct sadb_x_ipsecrequest *rq1, int len,
rq2 = (struct sadb_x_ipsecrequest *)((u8 *)rq1 + rq1->sadb_x_ipsecrequest_len);
len -= rq1->sadb_x_ipsecrequest_len;

- if (len <= sizeof(struct sadb_x_ipsecrequest) ||
- len < rq2->sadb_x_ipsecrequest_len)
+ if (len <= sizeof(*rq2) ||
+ len < rq2->sadb_x_ipsecrequest_len ||
+ rq2->sadb_x_ipsecrequest_len < sizeof(*rq2))
return -EINVAL;

/* new endpoints */
err = parse_sockaddr_pair((struct sockaddr *)(rq2 + 1),
- rq2->sadb_x_ipsecrequest_len,
+ rq2->sadb_x_ipsecrequest_len - sizeof(*rq2),
&m->new_saddr, &m->new_daddr,
&m->new_family);
if (err)
diff --git a/net/nfc/core.c b/net/nfc/core.c
index 819b87702b70..2ff3c924b64f 100644
--- a/net/nfc/core.c
+++ b/net/nfc/core.c
@@ -950,6 +950,8 @@ static void nfc_release(struct device *d)
kfree(se);
}

+ ida_simple_remove(&nfc_index_ida, dev->idx);
+
kfree(dev);
}

@@ -1024,6 +1026,7 @@ struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops,
int tx_headroom, int tx_tailroom)
{
struct nfc_dev *dev;
+ int rc;

if (!ops->start_poll || !ops->stop_poll || !ops->activate_target ||
!ops->deactivate_target || !ops->im_transceive)
@@ -1036,6 +1039,15 @@ struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops,
if (!dev)
return NULL;

+ rc = ida_simple_get(&nfc_index_ida, 0, 0, GFP_KERNEL);
+ if (rc < 0)
+ goto err_free_dev;
+ dev->idx = rc;
+
+ dev->dev.class = &nfc_class;
+ dev_set_name(&dev->dev, "nfc%d", dev->idx);
+ device_initialize(&dev->dev);
+
dev->ops = ops;
dev->supported_protocols = supported_protocols;
dev->tx_headroom = tx_headroom;
@@ -1058,6 +1070,11 @@ struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops,
}

return dev;
+
+err_free_dev:
+ kfree(dev);
+
+ return ERR_PTR(rc);
}
EXPORT_SYMBOL(nfc_allocate_device);

@@ -1072,14 +1089,6 @@ int nfc_register_device(struct nfc_dev *dev)

pr_debug("dev_name=%s\n", dev_name(&dev->dev));

- dev->idx = ida_simple_get(&nfc_index_ida, 0, 0, GFP_KERNEL);
- if (dev->idx < 0)
- return dev->idx;
-
- dev->dev.class = &nfc_class;
- dev_set_name(&dev->dev, "nfc%d", dev->idx);
- device_initialize(&dev->dev);
-
mutex_lock(&nfc_devlist_mutex);
nfc_devlist_generation++;
rc = device_add(&dev->dev);
@@ -1117,12 +1126,10 @@ EXPORT_SYMBOL(nfc_register_device);
*/
void nfc_unregister_device(struct nfc_dev *dev)
{
- int rc, id;
+ int rc;

pr_debug("dev_name=%s\n", dev_name(&dev->dev));

- id = dev->idx;
-
if (dev->rfkill) {
rfkill_unregister(dev->rfkill);
rfkill_destroy(dev->rfkill);
@@ -1147,8 +1154,6 @@ void nfc_unregister_device(struct nfc_dev *dev)
nfc_devlist_generation++;
device_del(&dev->dev);
mutex_unlock(&nfc_devlist_mutex);
-
- ida_simple_remove(&nfc_index_ida, id);
}
EXPORT_SYMBOL(nfc_unregister_device);

diff --git a/net/nfc/llcp_sock.c b/net/nfc/llcp_sock.c
index 51f077a92fa9..499e9483e3ee 100644
--- a/net/nfc/llcp_sock.c
+++ b/net/nfc/llcp_sock.c
@@ -76,7 +76,8 @@ static int llcp_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
struct sockaddr_nfc_llcp llcp_addr;
int len, ret = 0;

- if (!addr || addr->sa_family != AF_NFC)
+ if (!addr || alen < offsetofend(struct sockaddr, sa_family) ||
+ addr->sa_family != AF_NFC)
return -EINVAL;

pr_debug("sk %p addr %p family %d\n", sk, addr, addr->sa_family);
@@ -150,7 +151,8 @@ static int llcp_raw_sock_bind(struct socket *sock, struct sockaddr *addr,
struct sockaddr_nfc_llcp llcp_addr;
int len, ret = 0;

- if (!addr || addr->sa_family != AF_NFC)
+ if (!addr || alen < offsetofend(struct sockaddr, sa_family) ||
+ addr->sa_family != AF_NFC)
return -EINVAL;

pr_debug("sk %p addr %p family %d\n", sk, addr, addr->sa_family);
@@ -655,8 +657,7 @@ static int llcp_sock_connect(struct socket *sock, struct sockaddr *_addr,

pr_debug("sock %p sk %p flags 0x%x\n", sock, sk, flags);

- if (!addr || len < sizeof(struct sockaddr_nfc) ||
- addr->sa_family != AF_NFC)
+ if (!addr || len < sizeof(*addr) || addr->sa_family != AF_NFC)
return -EINVAL;

if (addr->service_name_len == 0 && addr->dsap == 0)
diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c
index 43cb1c17e267..c4dc31327522 100644
--- a/net/nfc/netlink.c
+++ b/net/nfc/netlink.c
@@ -899,7 +899,9 @@ static int nfc_genl_llc_get_params(struct sk_buff *skb, struct genl_info *info)
struct sk_buff *msg = NULL;
u32 idx;

- if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
+ if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
+ !info->attrs[NFC_ATTR_TARGET_INDEX] ||
+ !info->attrs[NFC_ATTR_PROTOCOLS])
return -EINVAL;

idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c
index 08e430d664cd..175b96ec65e2 100644
--- a/sound/soc/soc-compress.c
+++ b/sound/soc/soc-compress.c
@@ -68,7 +68,8 @@ out:
static int soc_compr_open_fe(struct snd_compr_stream *cstream)
{
struct snd_soc_pcm_runtime *fe = cstream->private_data;
- struct snd_pcm_substream *fe_substream = fe->pcm->streams[0].substream;
+ struct snd_pcm_substream *fe_substream =
+ fe->pcm->streams[cstream->direction].substream;
struct snd_soc_platform *platform = fe->platform;
struct snd_soc_dpcm *dpcm;
struct snd_soc_dapm_widget_list *list;
@@ -415,7 +416,8 @@ static int soc_compr_set_params_fe(struct snd_compr_stream *cstream,
struct snd_compr_params *params)
{
struct snd_soc_pcm_runtime *fe = cstream->private_data;
- struct snd_pcm_substream *fe_substream = fe->pcm->streams[0].substream;
+ struct snd_pcm_substream *fe_substream =
+ fe->pcm->streams[cstream->direction].substream;
struct snd_soc_platform *platform = fe->platform;
int ret = 0, stream;

diff --git a/tools/perf/ui/browser.c b/tools/perf/ui/browser.c
index 6680fa5cb9dd..d9f04239a12a 100644
--- a/tools/perf/ui/browser.c
+++ b/tools/perf/ui/browser.c
@@ -673,7 +673,7 @@ static void __ui_browser__line_arrow_down(struct ui_browser *browser,
ui_browser__gotorc(browser, row, column + 1);
SLsmg_draw_hline(2);

- if (row++ == 0)
+ if (++row == 0)
goto out;
} else
row = 0;
diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
index 0ba4057d271b..531e01becf40 100644
--- a/virt/kvm/ioapic.c
+++ b/virt/kvm/ioapic.c
@@ -610,7 +610,7 @@ static void kvm_ioapic_reset(struct kvm_ioapic *ioapic)
ioapic->ioregsel = 0;
ioapic->irr = 0;
ioapic->id = 0;
- memset(ioapic->irq_eoi, 0x00, IOAPIC_NUM_PINS);
+ memset(ioapic->irq_eoi, 0x00, sizeof(ioapic->irq_eoi));
rtc_irq_eoi_tracking_reset(ioapic);
update_handled_vectors(ioapic);
}
diff --git a/virt/kvm/vfio.c b/virt/kvm/vfio.c
index 620e37f741b8..6ddd3c742555 100644
--- a/virt/kvm/vfio.c
+++ b/virt/kvm/vfio.c
@@ -47,6 +47,22 @@ static struct vfio_group *kvm_vfio_group_get_external_user(struct file *filep)
return vfio_group;
}

+static bool kvm_vfio_external_group_match_file(struct vfio_group *group,
+ struct file *filep)
+{
+ bool ret, (*fn)(struct vfio_group *, struct file *);
+
+ fn = symbol_get(vfio_external_group_match_file);
+ if (!fn)
+ return false;
+
+ ret = fn(group, filep);
+
+ symbol_put(vfio_external_group_match_file);
+
+ return ret;
+}
+
static void kvm_vfio_group_put_external_user(struct vfio_group *vfio_group)
{
void (*fn)(struct vfio_group *);
@@ -169,18 +185,13 @@ static int kvm_vfio_set_group(struct kvm_device *dev, long attr, u64 arg)
if (!f.file)
return -EBADF;

- vfio_group = kvm_vfio_group_get_external_user(f.file);
- fdput(f);
-
- if (IS_ERR(vfio_group))
- return PTR_ERR(vfio_group);
-
ret = -ENOENT;

mutex_lock(&kv->lock);

list_for_each_entry(kvg, &kv->group_list, node) {
- if (kvg->vfio_group != vfio_group)
+ if (!kvm_vfio_external_group_match_file(kvg->vfio_group,
+ f.file))
continue;

list_del(&kvg->node);
@@ -192,7 +203,7 @@ static int kvm_vfio_set_group(struct kvm_device *dev, long attr, u64 arg)

mutex_unlock(&kv->lock);

- kvm_vfio_group_put_external_user(vfio_group);
+ fdput(f);

kvm_vfio_update_coherency(dev);

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