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Open Source and information security mailing list archives
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Date: Thu, 29 Jun 2017 14:17:32 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org,
Andrew Morton <akpm@...ux-foundation.org>,
torvalds@...ux-foundation.org, stable@...r.kernel.org
Cc: lwn@....net, Jiri Slaby <jslaby@...e.cz>
Subject: Re: Linux 4.4.75
diff --git a/Makefile b/Makefile
index 1f75507acbf4..696d15d8ad5d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 4
PATCHLEVEL = 4
-SUBLEVEL = 74
+SUBLEVEL = 75
EXTRAVERSION =
NAME = Blurry Fish Butt
diff --git a/arch/powerpc/kernel/kprobes.c b/arch/powerpc/kernel/kprobes.c
index 7c053f281406..1138fec3dd65 100644
--- a/arch/powerpc/kernel/kprobes.c
+++ b/arch/powerpc/kernel/kprobes.c
@@ -514,6 +514,15 @@ int __kprobes setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
#endif
#endif
+ /*
+ * jprobes use jprobe_return() which skips the normal return
+ * path of the function, and this messes up the accounting of the
+ * function graph tracer.
+ *
+ * Pause function graph tracing while performing the jprobe function.
+ */
+ pause_graph_tracing();
+
return 1;
}
@@ -536,6 +545,8 @@ int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
* saved regs...
*/
memcpy(regs, &kcb->jprobe_saved_regs, sizeof(struct pt_regs));
+ /* It's OK to start function graph tracing again */
+ unpause_graph_tracing();
preempt_enable_no_resched();
return 1;
}
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 3c3a367b6e59..396dc44e783b 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -2693,6 +2693,27 @@ static int kvmppc_vcpu_run_hv(struct kvm_run *run, struct kvm_vcpu *vcpu)
return -EINVAL;
}
+ /*
+ * Don't allow entry with a suspended transaction, because
+ * the guest entry/exit code will lose it.
+ * If the guest has TM enabled, save away their TM-related SPRs
+ * (they will get restored by the TM unavailable interrupt).
+ */
+#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
+ if (cpu_has_feature(CPU_FTR_TM) && current->thread.regs &&
+ (current->thread.regs->msr & MSR_TM)) {
+ if (MSR_TM_ACTIVE(current->thread.regs->msr)) {
+ run->exit_reason = KVM_EXIT_FAIL_ENTRY;
+ run->fail_entry.hardware_entry_failure_reason = 0;
+ return -EINVAL;
+ }
+ current->thread.tm_tfhar = mfspr(SPRN_TFHAR);
+ current->thread.tm_tfiar = mfspr(SPRN_TFIAR);
+ current->thread.tm_texasr = mfspr(SPRN_TEXASR);
+ current->thread.regs->msr &= ~MSR_TM;
+ }
+#endif
+
kvmppc_core_prepare_to_enter(vcpu);
/* No need to go into the guest when all we'll do is come back out */
diff --git a/arch/powerpc/mm/slb_low.S b/arch/powerpc/mm/slb_low.S
index 4c48b487698c..0b48ce40d351 100644
--- a/arch/powerpc/mm/slb_low.S
+++ b/arch/powerpc/mm/slb_low.S
@@ -179,6 +179,16 @@ END_MMU_FTR_SECTION_IFSET(MMU_FTR_1T_SEGMENT)
b slb_finish_load
8: /* invalid EA */
+ /*
+ * It's possible the bad EA is too large to fit in the SLB cache, which
+ * would mean we'd fail to invalidate it on context switch. So mark the
+ * SLB cache as full so we force a full flush. We also set cr7+eq to
+ * mark the address as a kernel address, so slb_finish_load() skips
+ * trying to insert it into the SLB cache.
+ */
+ li r9,SLB_CACHE_ENTRIES + 1
+ sth r9,PACASLBCACHEPTR(r13)
+ crset 4*cr7+eq
li r10,0 /* BAD_VSID */
li r9,0 /* BAD_VSID */
li r11,SLB_VSID_USER /* flags don't much matter */
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
index 51a9942cdb40..f4cae5357e40 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
@@ -681,6 +681,10 @@ int amdgpu_atombios_get_clock_info(struct amdgpu_device *adev)
DRM_INFO("Changing default dispclk from %dMhz to 600Mhz\n",
adev->clock.default_dispclk / 100);
adev->clock.default_dispclk = 60000;
+ } else if (adev->clock.default_dispclk <= 60000) {
+ DRM_INFO("Changing default dispclk from %dMhz to 625Mhz\n",
+ adev->clock.default_dispclk / 100);
+ adev->clock.default_dispclk = 62500;
}
adev->clock.dp_extclk =
le16_to_cpu(firmware_info->info_21.usUniphyDPModeExtClkFreq);
diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_crtc.c b/drivers/gpu/drm/amd/amdgpu/atombios_crtc.c
index 49aa35016653..247b088990dc 100644
--- a/drivers/gpu/drm/amd/amdgpu/atombios_crtc.c
+++ b/drivers/gpu/drm/amd/amdgpu/atombios_crtc.c
@@ -164,7 +164,7 @@ void amdgpu_atombios_crtc_powergate(struct drm_crtc *crtc, int state)
struct drm_device *dev = crtc->dev;
struct amdgpu_device *adev = dev->dev_private;
int index = GetIndexIntoMasterTable(COMMAND, EnableDispPowerGating);
- ENABLE_DISP_POWER_GATING_PARAMETERS_V2_1 args;
+ ENABLE_DISP_POWER_GATING_PS_ALLOCATION args;
memset(&args, 0, sizeof(args));
@@ -177,7 +177,7 @@ void amdgpu_atombios_crtc_powergate(struct drm_crtc *crtc, int state)
void amdgpu_atombios_crtc_powergate_init(struct amdgpu_device *adev)
{
int index = GetIndexIntoMasterTable(COMMAND, EnableDispPowerGating);
- ENABLE_DISP_POWER_GATING_PARAMETERS_V2_1 args;
+ ENABLE_DISP_POWER_GATING_PS_ALLOCATION args;
memset(&args, 0, sizeof(args));
diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c
index a9b01bcf7d0a..fcecaf5b5526 100644
--- a/drivers/gpu/drm/radeon/radeon_combios.c
+++ b/drivers/gpu/drm/radeon/radeon_combios.c
@@ -3394,6 +3394,13 @@ void radeon_combios_asic_init(struct drm_device *dev)
rdev->pdev->subsystem_vendor == 0x103c &&
rdev->pdev->subsystem_device == 0x280a)
return;
+ /* quirk for rs4xx Toshiba Sattellite L20-183 latop to make it resume
+ * - it hangs on resume inside the dynclk 1 table.
+ */
+ if (rdev->family == CHIP_RS400 &&
+ rdev->pdev->subsystem_vendor == 0x1179 &&
+ rdev->pdev->subsystem_device == 0xff31)
+ return;
/* DYN CLK 1 */
table = combios_get_table_offset(dev, COMBIOS_DYN_CLK_1_TABLE);
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index 4aa2cbe4c85f..a77521695c9a 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -127,6 +127,10 @@ static struct radeon_px_quirk radeon_px_quirk_list[] = {
* https://bugzilla.kernel.org/show_bug.cgi?id=51381
*/
{ PCI_VENDOR_ID_ATI, 0x6840, 0x1043, 0x2122, RADEON_PX_QUIRK_DISABLE_PX },
+ /* Asus K53TK laptop with AMD A6-3420M APU and Radeon 7670m GPU
+ * https://bugs.freedesktop.org/show_bug.cgi?id=101491
+ */
+ { PCI_VENDOR_ID_ATI, 0x6741, 0x1043, 0x2122, RADEON_PX_QUIRK_DISABLE_PX },
/* macbook pro 8.2 */
{ PCI_VENDOR_ID_ATI, 0x6741, PCI_VENDOR_ID_APPLE, 0x00e2, RADEON_PX_QUIRK_LONG_WAKEUP },
{ 0, 0, 0, 0, 0 },
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index e37030624165..c7f8b70d15ee 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -285,6 +285,9 @@
#define USB_VENDOR_ID_DEALEXTREAME 0x10c5
#define USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701 0x819a
+#define USB_VENDOR_ID_DELL 0x413c
+#define USB_DEVICE_ID_DELL_PIXART_USB_OPTICAL_MOUSE 0x301a
+
#define USB_VENDOR_ID_DELORME 0x1163
#define USB_DEVICE_ID_DELORME_EARTHMATE 0x0100
#define USB_DEVICE_ID_DELORME_EM_LT20 0x0200
diff --git a/drivers/hid/usbhid/hid-quirks.c b/drivers/hid/usbhid/hid-quirks.c
index 6ca6ab00fa93..ce1543d69acb 100644
--- a/drivers/hid/usbhid/hid-quirks.c
+++ b/drivers/hid/usbhid/hid-quirks.c
@@ -72,6 +72,7 @@ static const struct hid_blacklist {
{ USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_AXIS_295, HID_QUIRK_NOGET },
{ USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_PIXART_USB_OPTICAL_MOUSE, HID_QUIRK_ALWAYS_POLL },
{ USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_CREATIVE_SB_OMNI_SURROUND_51, HID_QUIRK_NOGET },
+ { USB_VENDOR_ID_DELL, USB_DEVICE_ID_DELL_PIXART_USB_OPTICAL_MOUSE, HID_QUIRK_ALWAYS_POLL },
{ USB_VENDOR_ID_DMI, USB_DEVICE_ID_DMI_ENC, HID_QUIRK_NOGET },
{ USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_WIIU, HID_QUIRK_MULTI_INPUT },
{ USB_VENDOR_ID_ELAN, HID_ANY_ID, HID_QUIRK_ALWAYS_POLL },
diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
index e7b96f1ac2c5..5be14ad29d46 100644
--- a/drivers/input/serio/i8042-x86ia64io.h
+++ b/drivers/input/serio/i8042-x86ia64io.h
@@ -788,6 +788,13 @@ static const struct dmi_system_id __initconst i8042_dmi_notimeout_table[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK U574"),
},
},
+ {
+ /* Fujitsu UH554 laptop */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK UH544"),
+ },
+ },
{ }
};
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index 37e4135ab213..64d6f053c2a5 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -1057,6 +1057,13 @@ static int spansion_quad_enable(struct spi_nor *nor)
return -EINVAL;
}
+ ret = spi_nor_wait_till_ready(nor);
+ if (ret) {
+ dev_err(nor->dev,
+ "timeout while writing configuration register\n");
+ return ret;
+ }
+
/* read back and check it */
ret = read_cr(nor);
if (!(ret > 0 && (ret & CR_QUAD_EN_SPAN))) {
diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
index d2701c53ed68..ebec2dceff45 100644
--- a/drivers/net/phy/marvell.c
+++ b/drivers/net/phy/marvell.c
@@ -822,8 +822,6 @@ static int marvell_read_status(struct phy_device *phydev)
phydev->lp_advertising = mii_stat1000_to_ethtool_lpa_t(lpagb) |
mii_lpa_to_ethtool_lpa_t(lpa);
- lpa &= adv;
-
if (status & MII_M1011_PHY_STATUS_FULLDUPLEX)
phydev->duplex = DUPLEX_FULL;
else
diff --git a/drivers/net/phy/mdio-bcm-iproc.c b/drivers/net/phy/mdio-bcm-iproc.c
index c0b4e65267af..46fe1ae919a3 100644
--- a/drivers/net/phy/mdio-bcm-iproc.c
+++ b/drivers/net/phy/mdio-bcm-iproc.c
@@ -81,8 +81,6 @@ static int iproc_mdio_read(struct mii_bus *bus, int phy_id, int reg)
if (rc)
return rc;
- iproc_mdio_config_clk(priv->base);
-
/* Prepare the read operation */
cmd = (MII_DATA_TA_VAL << MII_DATA_TA_SHIFT) |
(reg << MII_DATA_RA_SHIFT) |
@@ -112,8 +110,6 @@ static int iproc_mdio_write(struct mii_bus *bus, int phy_id,
if (rc)
return rc;
- iproc_mdio_config_clk(priv->base);
-
/* Prepare the write operation */
cmd = (MII_DATA_TA_VAL << MII_DATA_TA_SHIFT) |
(reg << MII_DATA_RA_SHIFT) |
@@ -163,6 +159,8 @@ static int iproc_mdio_probe(struct platform_device *pdev)
bus->read = iproc_mdio_read;
bus->write = iproc_mdio_write;
+ iproc_mdio_config_clk(priv->base);
+
rc = of_mdiobus_register(bus, pdev->dev.of_node);
if (rc) {
dev_err(&pdev->dev, "MDIO bus registration failed\n");
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 044253dca30a..b8a5a8e8f57d 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -27,6 +27,13 @@ enum {
NVME_NS_LIGHTNVM = 1,
};
+/* The below value is the specific amount of delay needed before checking
+ * readiness in case of the PCI_DEVICE(0x1c58, 0x0003), which needs the
+ * NVME_QUIRK_DELAY_BEFORE_CHK_RDY quirk enabled. The value (in ms) was
+ * found empirically.
+ */
+#define NVME_QUIRK_DELAY_AMOUNT 2000
+
/*
* Represents an NVM Express device. Each nvme_dev is a PCI function.
*/
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index c851bc53831c..4c673d45f1bd 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -1633,10 +1633,15 @@ static int nvme_wait_ready(struct nvme_dev *dev, u64 cap, bool enabled)
*/
static int nvme_disable_ctrl(struct nvme_dev *dev, u64 cap)
{
+ struct pci_dev *pdev = to_pci_dev(dev->dev);
+
dev->ctrl_config &= ~NVME_CC_SHN_MASK;
dev->ctrl_config &= ~NVME_CC_ENABLE;
writel(dev->ctrl_config, &dev->bar->cc);
+ if (pdev->vendor == 0x1c58 && pdev->device == 0x0003)
+ msleep(NVME_QUIRK_DELAY_AMOUNT);
+
return nvme_wait_ready(dev, cap, false);
}
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 655f79db7899..58048dd5fcd0 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -632,9 +632,12 @@ int __init of_scan_flat_dt(int (*it)(unsigned long node,
const char *pathp;
int offset, rc = 0, depth = -1;
- for (offset = fdt_next_node(blob, -1, &depth);
- offset >= 0 && depth >= 0 && !rc;
- offset = fdt_next_node(blob, offset, &depth)) {
+ if (!blob)
+ return 0;
+
+ for (offset = fdt_next_node(blob, -1, &depth);
+ offset >= 0 && depth >= 0 && !rc;
+ offset = fdt_next_node(blob, offset, &depth)) {
pathp = fdt_get_name(blob, offset, NULL);
if (*pathp == '/')
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index 200d3de8bc1e..a180c000e246 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -1112,6 +1112,18 @@ iscsit_get_immediate_data(struct iscsi_cmd *cmd, struct iscsi_scsi_req *hdr,
*/
if (dump_payload)
goto after_immediate_data;
+ /*
+ * Check for underflow case where both EDTL and immediate data payload
+ * exceeds what is presented by CDB's TRANSFER LENGTH, and what has
+ * already been set in target_cmd_size_check() as se_cmd->data_length.
+ *
+ * For this special case, fail the command and dump the immediate data
+ * payload.
+ */
+ if (cmd->first_burst_len > cmd->se_cmd.data_length) {
+ cmd->sense_reason = TCM_INVALID_CDB_FIELD;
+ goto after_immediate_data;
+ }
immed_ret = iscsit_handle_immediate_data(cmd, hdr,
cmd->first_burst_len);
diff --git a/drivers/target/target_core_internal.h b/drivers/target/target_core_internal.h
index 253a91bff943..272e6f755322 100644
--- a/drivers/target/target_core_internal.h
+++ b/drivers/target/target_core_internal.h
@@ -132,7 +132,7 @@ int init_se_kmem_caches(void);
void release_se_kmem_caches(void);
u32 scsi_get_new_index(scsi_index_t);
void transport_subsystem_check_init(void);
-void transport_cmd_finish_abort(struct se_cmd *, int);
+int transport_cmd_finish_abort(struct se_cmd *, int);
unsigned char *transport_dump_cmd_direction(struct se_cmd *);
void transport_dump_dev_state(struct se_device *, char *, int *);
void transport_dump_dev_info(struct se_device *, struct se_lun *,
diff --git a/drivers/target/target_core_tmr.c b/drivers/target/target_core_tmr.c
index 46b1991fbb50..c9be953496ec 100644
--- a/drivers/target/target_core_tmr.c
+++ b/drivers/target/target_core_tmr.c
@@ -75,7 +75,7 @@ void core_tmr_release_req(struct se_tmr_req *tmr)
kfree(tmr);
}
-static void core_tmr_handle_tas_abort(struct se_cmd *cmd, int tas)
+static int core_tmr_handle_tas_abort(struct se_cmd *cmd, int tas)
{
unsigned long flags;
bool remove = true, send_tas;
@@ -91,7 +91,7 @@ static void core_tmr_handle_tas_abort(struct se_cmd *cmd, int tas)
transport_send_task_abort(cmd);
}
- transport_cmd_finish_abort(cmd, remove);
+ return transport_cmd_finish_abort(cmd, remove);
}
static int target_check_cdb_and_preempt(struct list_head *list,
@@ -185,8 +185,8 @@ void core_tmr_abort_task(
cancel_work_sync(&se_cmd->work);
transport_wait_for_tasks(se_cmd);
- transport_cmd_finish_abort(se_cmd, true);
- target_put_sess_cmd(se_cmd);
+ if (!transport_cmd_finish_abort(se_cmd, true))
+ target_put_sess_cmd(se_cmd);
printk("ABORT_TASK: Sending TMR_FUNCTION_COMPLETE for"
" ref_tag: %llu\n", ref_tag);
@@ -286,8 +286,8 @@ static void core_tmr_drain_tmr_list(
cancel_work_sync(&cmd->work);
transport_wait_for_tasks(cmd);
- transport_cmd_finish_abort(cmd, 1);
- target_put_sess_cmd(cmd);
+ if (!transport_cmd_finish_abort(cmd, 1))
+ target_put_sess_cmd(cmd);
}
}
@@ -385,8 +385,8 @@ static void core_tmr_drain_state_list(
cancel_work_sync(&cmd->work);
transport_wait_for_tasks(cmd);
- core_tmr_handle_tas_abort(cmd, tas);
- target_put_sess_cmd(cmd);
+ if (!core_tmr_handle_tas_abort(cmd, tas))
+ target_put_sess_cmd(cmd);
}
}
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 60743bf27f37..37c77db6e737 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -639,9 +639,10 @@ static void transport_lun_remove_cmd(struct se_cmd *cmd)
percpu_ref_put(&lun->lun_ref);
}
-void transport_cmd_finish_abort(struct se_cmd *cmd, int remove)
+int transport_cmd_finish_abort(struct se_cmd *cmd, int remove)
{
bool ack_kref = (cmd->se_cmd_flags & SCF_ACK_KREF);
+ int ret = 0;
if (cmd->se_cmd_flags & SCF_SE_LUN_CMD)
transport_lun_remove_cmd(cmd);
@@ -653,9 +654,11 @@ void transport_cmd_finish_abort(struct se_cmd *cmd, int remove)
cmd->se_tfo->aborted_task(cmd);
if (transport_cmd_check_stop_to_fabric(cmd))
- return;
+ return 1;
if (remove && ack_kref)
- transport_put_cmd(cmd);
+ ret = transport_put_cmd(cmd);
+
+ return ret;
}
static void target_complete_failure_work(struct work_struct *work)
diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index 9ad5145d3103..6d8f865a2fb7 100644
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -1668,12 +1668,12 @@ static int ffs_func_eps_enable(struct ffs_function *func)
ep->ep->driver_data = ep;
ep->ep->desc = ds;
- comp_desc = (struct usb_ss_ep_comp_descriptor *)(ds +
- USB_DT_ENDPOINT_SIZE);
- ep->ep->maxburst = comp_desc->bMaxBurst + 1;
-
- if (needs_comp_desc)
+ if (needs_comp_desc) {
+ comp_desc = (struct usb_ss_ep_comp_descriptor *)(ds +
+ USB_DT_ENDPOINT_SIZE);
+ ep->ep->maxburst = comp_desc->bMaxBurst + 1;
ep->ep->comp_desc = comp_desc;
+ }
ret = usb_ep_enable(ep->ep);
if (likely(!ret)) {
diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c
index 7fbe19d5279e..81b2b9f808b5 100644
--- a/drivers/usb/usbip/vhci_hcd.c
+++ b/drivers/usb/usbip/vhci_hcd.c
@@ -215,14 +215,19 @@ done:
static inline void hub_descriptor(struct usb_hub_descriptor *desc)
{
+ int width;
+
memset(desc, 0, sizeof(*desc));
desc->bDescriptorType = USB_DT_HUB;
- desc->bDescLength = 9;
desc->wHubCharacteristics = cpu_to_le16(
HUB_CHAR_INDV_PORT_LPSM | HUB_CHAR_COMMON_OCPM);
+
desc->bNbrPorts = VHCI_NPORTS;
- desc->u.hs.DeviceRemovable[0] = 0xff;
- desc->u.hs.DeviceRemovable[1] = 0xff;
+ BUILD_BUG_ON(VHCI_NPORTS > USB_MAXCHILDREN);
+ width = desc->bNbrPorts / 8 + 1;
+ desc->bDescLength = USB_DT_HUB_NONVAR_SIZE + 2 * width;
+ memset(&desc->u.hs.DeviceRemovable[0], 0, width);
+ memset(&desc->u.hs.DeviceRemovable[width], 0xff, width);
}
static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c
index ac7d921ed984..257425511d10 100644
--- a/fs/autofs4/dev-ioctl.c
+++ b/fs/autofs4/dev-ioctl.c
@@ -331,7 +331,7 @@ static int autofs_dev_ioctl_fail(struct file *fp,
int status;
token = (autofs_wqt_t) param->fail.token;
- status = param->fail.status ? param->fail.status : -ENOENT;
+ status = param->fail.status < 0 ? param->fail.status : -ENOENT;
return autofs4_wait_release(sbi, token, status);
}
diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c
index 87b87e091e8e..efd72e1fae74 100644
--- a/fs/cifs/smb1ops.c
+++ b/fs/cifs/smb1ops.c
@@ -849,8 +849,13 @@ cifs_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_fid *fid, __u16 search_flags,
struct cifs_search_info *srch_inf)
{
- return CIFSFindFirst(xid, tcon, path, cifs_sb,
- &fid->netfid, search_flags, srch_inf, true);
+ int rc;
+
+ rc = CIFSFindFirst(xid, tcon, path, cifs_sb,
+ &fid->netfid, search_flags, srch_inf, true);
+ if (rc)
+ cifs_dbg(FYI, "find first failed=%d\n", rc);
+ return rc;
}
static int
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 087918c4612a..1d125d3d0d89 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -909,7 +909,7 @@ smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
kfree(utf16_path);
if (rc) {
- cifs_dbg(VFS, "open dir failed\n");
+ cifs_dbg(FYI, "open dir failed rc=%d\n", rc);
return rc;
}
@@ -919,7 +919,7 @@ smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
fid->volatile_fid, 0, srch_inf);
if (rc) {
- cifs_dbg(VFS, "query directory failed\n");
+ cifs_dbg(FYI, "query directory failed rc=%d\n", rc);
SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
}
return rc;
diff --git a/fs/exec.c b/fs/exec.c
index 3a6de10d3891..02153068a694 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -206,8 +206,26 @@ static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos,
if (write) {
unsigned long size = bprm->vma->vm_end - bprm->vma->vm_start;
+ unsigned long ptr_size;
struct rlimit *rlim;
+ /*
+ * Since the stack will hold pointers to the strings, we
+ * must account for them as well.
+ *
+ * The size calculation is the entire vma while each arg page is
+ * built, so each time we get here it's calculating how far it
+ * is currently (rather than each call being just the newly
+ * added size from the arg page). As a result, we need to
+ * always add the entire size of the pointers, so that on the
+ * last call to get_arg_page() we'll actually have the entire
+ * correct size.
+ */
+ ptr_size = (bprm->argc + bprm->envc) * sizeof(void *);
+ if (ptr_size > ULONG_MAX - size)
+ goto fail;
+ size += ptr_size;
+
acct_arg_size(bprm, size / PAGE_SIZE);
/*
@@ -225,13 +243,15 @@ static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos,
* to work from.
*/
rlim = current->signal->rlim;
- if (size > ACCESS_ONCE(rlim[RLIMIT_STACK].rlim_cur) / 4) {
- put_page(page);
- return NULL;
- }
+ if (size > READ_ONCE(rlim[RLIMIT_STACK].rlim_cur) / 4)
+ goto fail;
}
return page;
+
+fail:
+ put_page(page);
+ return NULL;
}
static void put_arg_page(struct page *page)
diff --git a/include/linux/timekeeper_internal.h b/include/linux/timekeeper_internal.h
index 25247220b4b7..f0f1793cfa49 100644
--- a/include/linux/timekeeper_internal.h
+++ b/include/linux/timekeeper_internal.h
@@ -29,7 +29,6 @@
*/
struct tk_read_base {
struct clocksource *clock;
- cycle_t (*read)(struct clocksource *cs);
cycle_t mask;
cycle_t cycle_last;
u32 mult;
diff --git a/kernel/signal.c b/kernel/signal.c
index f3f1f7a972fd..b92a047ddc82 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -503,7 +503,8 @@ int unhandled_signal(struct task_struct *tsk, int sig)
return !tsk->ptrace;
}
-static void collect_signal(int sig, struct sigpending *list, siginfo_t *info)
+static void collect_signal(int sig, struct sigpending *list, siginfo_t *info,
+ bool *resched_timer)
{
struct sigqueue *q, *first = NULL;
@@ -525,6 +526,12 @@ static void collect_signal(int sig, struct sigpending *list, siginfo_t *info)
still_pending:
list_del_init(&first->list);
copy_siginfo(info, &first->info);
+
+ *resched_timer =
+ (first->flags & SIGQUEUE_PREALLOC) &&
+ (info->si_code == SI_TIMER) &&
+ (info->si_sys_private);
+
__sigqueue_free(first);
} else {
/*
@@ -541,12 +548,12 @@ still_pending:
}
static int __dequeue_signal(struct sigpending *pending, sigset_t *mask,
- siginfo_t *info)
+ siginfo_t *info, bool *resched_timer)
{
int sig = next_signal(pending, mask);
if (sig)
- collect_signal(sig, pending, info);
+ collect_signal(sig, pending, info, resched_timer);
return sig;
}
@@ -558,15 +565,16 @@ static int __dequeue_signal(struct sigpending *pending, sigset_t *mask,
*/
int dequeue_signal(struct task_struct *tsk, sigset_t *mask, siginfo_t *info)
{
+ bool resched_timer = false;
int signr;
/* We only dequeue private signals from ourselves, we don't let
* signalfd steal them
*/
- signr = __dequeue_signal(&tsk->pending, mask, info);
+ signr = __dequeue_signal(&tsk->pending, mask, info, &resched_timer);
if (!signr) {
signr = __dequeue_signal(&tsk->signal->shared_pending,
- mask, info);
+ mask, info, &resched_timer);
/*
* itimer signal ?
*
@@ -611,7 +619,7 @@ int dequeue_signal(struct task_struct *tsk, sigset_t *mask, siginfo_t *info)
*/
current->jobctl |= JOBCTL_STOP_DEQUEUED;
}
- if ((info->si_code & __SI_MASK) == __SI_TIMER && info->si_sys_private) {
+ if (resched_timer) {
/*
* Release the siglock to ensure proper locking order
* of timer locks outside of siglocks. Note, we leave
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 738012d68117..6e4866834d26 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -116,6 +116,26 @@ static inline void tk_update_sleep_time(struct timekeeper *tk, ktime_t delta)
tk->offs_boot = ktime_add(tk->offs_boot, delta);
}
+/*
+ * tk_clock_read - atomic clocksource read() helper
+ *
+ * This helper is necessary to use in the read paths because, while the
+ * seqlock ensures we don't return a bad value while structures are updated,
+ * it doesn't protect from potential crashes. There is the possibility that
+ * the tkr's clocksource may change between the read reference, and the
+ * clock reference passed to the read function. This can cause crashes if
+ * the wrong clocksource is passed to the wrong read function.
+ * This isn't necessary to use when holding the timekeeper_lock or doing
+ * a read of the fast-timekeeper tkrs (which is protected by its own locking
+ * and update logic).
+ */
+static inline u64 tk_clock_read(struct tk_read_base *tkr)
+{
+ struct clocksource *clock = READ_ONCE(tkr->clock);
+
+ return clock->read(clock);
+}
+
#ifdef CONFIG_DEBUG_TIMEKEEPING
#define WARNING_FREQ (HZ*300) /* 5 minute rate-limiting */
@@ -173,7 +193,7 @@ static inline cycle_t timekeeping_get_delta(struct tk_read_base *tkr)
*/
do {
seq = read_seqcount_begin(&tk_core.seq);
- now = tkr->read(tkr->clock);
+ now = tk_clock_read(tkr);
last = tkr->cycle_last;
mask = tkr->mask;
max = tkr->clock->max_cycles;
@@ -207,7 +227,7 @@ static inline cycle_t timekeeping_get_delta(struct tk_read_base *tkr)
cycle_t cycle_now, delta;
/* read clocksource */
- cycle_now = tkr->read(tkr->clock);
+ cycle_now = tk_clock_read(tkr);
/* calculate the delta since the last update_wall_time */
delta = clocksource_delta(cycle_now, tkr->cycle_last, tkr->mask);
@@ -235,12 +255,10 @@ static void tk_setup_internals(struct timekeeper *tk, struct clocksource *clock)
old_clock = tk->tkr_mono.clock;
tk->tkr_mono.clock = clock;
- tk->tkr_mono.read = clock->read;
tk->tkr_mono.mask = clock->mask;
- tk->tkr_mono.cycle_last = tk->tkr_mono.read(clock);
+ tk->tkr_mono.cycle_last = tk_clock_read(&tk->tkr_mono);
tk->tkr_raw.clock = clock;
- tk->tkr_raw.read = clock->read;
tk->tkr_raw.mask = clock->mask;
tk->tkr_raw.cycle_last = tk->tkr_mono.cycle_last;
@@ -404,7 +422,7 @@ static __always_inline u64 __ktime_get_fast_ns(struct tk_fast *tkf)
now += timekeeping_delta_to_ns(tkr,
clocksource_delta(
- tkr->read(tkr->clock),
+ tk_clock_read(tkr),
tkr->cycle_last,
tkr->mask));
} while (read_seqcount_retry(&tkf->seq, seq));
@@ -432,6 +450,10 @@ static cycle_t dummy_clock_read(struct clocksource *cs)
return cycles_at_suspend;
}
+static struct clocksource dummy_clock = {
+ .read = dummy_clock_read,
+};
+
/**
* halt_fast_timekeeper - Prevent fast timekeeper from accessing clocksource.
* @tk: Timekeeper to snapshot.
@@ -448,13 +470,13 @@ static void halt_fast_timekeeper(struct timekeeper *tk)
struct tk_read_base *tkr = &tk->tkr_mono;
memcpy(&tkr_dummy, tkr, sizeof(tkr_dummy));
- cycles_at_suspend = tkr->read(tkr->clock);
- tkr_dummy.read = dummy_clock_read;
+ cycles_at_suspend = tk_clock_read(tkr);
+ tkr_dummy.clock = &dummy_clock;
update_fast_timekeeper(&tkr_dummy, &tk_fast_mono);
tkr = &tk->tkr_raw;
memcpy(&tkr_dummy, tkr, sizeof(tkr_dummy));
- tkr_dummy.read = dummy_clock_read;
+ tkr_dummy.clock = &dummy_clock;
update_fast_timekeeper(&tkr_dummy, &tk_fast_raw);
}
@@ -618,11 +640,10 @@ static void timekeeping_update(struct timekeeper *tk, unsigned int action)
*/
static void timekeeping_forward_now(struct timekeeper *tk)
{
- struct clocksource *clock = tk->tkr_mono.clock;
cycle_t cycle_now, delta;
s64 nsec;
- cycle_now = tk->tkr_mono.read(clock);
+ cycle_now = tk_clock_read(&tk->tkr_mono);
delta = clocksource_delta(cycle_now, tk->tkr_mono.cycle_last, tk->tkr_mono.mask);
tk->tkr_mono.cycle_last = cycle_now;
tk->tkr_raw.cycle_last = cycle_now;
@@ -1405,7 +1426,7 @@ void timekeeping_resume(void)
* The less preferred source will only be tried if there is no better
* usable source. The rtc part is handled separately in rtc core code.
*/
- cycle_now = tk->tkr_mono.read(clock);
+ cycle_now = tk_clock_read(&tk->tkr_mono);
if ((clock->flags & CLOCK_SOURCE_SUSPEND_NONSTOP) &&
cycle_now > tk->tkr_mono.cycle_last) {
u64 num, max = ULLONG_MAX;
@@ -1800,7 +1821,7 @@ void update_wall_time(void)
#ifdef CONFIG_ARCH_USES_GETTIMEOFFSET
offset = real_tk->cycle_interval;
#else
- offset = clocksource_delta(tk->tkr_mono.read(tk->tkr_mono.clock),
+ offset = clocksource_delta(tk_clock_read(&tk->tkr_mono),
tk->tkr_mono.cycle_last, tk->tkr_mono.mask);
#endif
diff --git a/lib/cmdline.c b/lib/cmdline.c
index 8f13cf73c2ec..79069d7938ea 100644
--- a/lib/cmdline.c
+++ b/lib/cmdline.c
@@ -22,14 +22,14 @@
* the values[M, M+1, ..., N] into the ints array in get_options.
*/
-static int get_range(char **str, int *pint)
+static int get_range(char **str, int *pint, int n)
{
int x, inc_counter, upper_range;
(*str)++;
upper_range = simple_strtol((*str), NULL, 0);
inc_counter = upper_range - *pint;
- for (x = *pint; x < upper_range; x++)
+ for (x = *pint; n && x < upper_range; x++, n--)
*pint++ = x;
return inc_counter;
}
@@ -96,7 +96,7 @@ char *get_options(const char *str, int nints, int *ints)
break;
if (res == 3) {
int range_nums;
- range_nums = get_range((char **)&str, ints + i);
+ range_nums = get_range((char **)&str, ints + i, nints - i);
if (range_nums < 0)
break;
/*
diff --git a/net/rxrpc/ar-key.c b/net/rxrpc/ar-key.c
index da3cc09f683e..91d43ab3a961 100644
--- a/net/rxrpc/ar-key.c
+++ b/net/rxrpc/ar-key.c
@@ -215,7 +215,7 @@ static int rxrpc_krb5_decode_principal(struct krb5_principal *princ,
unsigned int *_toklen)
{
const __be32 *xdr = *_xdr;
- unsigned int toklen = *_toklen, n_parts, loop, tmp;
+ unsigned int toklen = *_toklen, n_parts, loop, tmp, paddedlen;
/* there must be at least one name, and at least #names+1 length
* words */
@@ -245,16 +245,16 @@ static int rxrpc_krb5_decode_principal(struct krb5_principal *princ,
toklen -= 4;
if (tmp <= 0 || tmp > AFSTOKEN_STRING_MAX)
return -EINVAL;
- if (tmp > toklen)
+ paddedlen = (tmp + 3) & ~3;
+ if (paddedlen > toklen)
return -EINVAL;
princ->name_parts[loop] = kmalloc(tmp + 1, GFP_KERNEL);
if (!princ->name_parts[loop])
return -ENOMEM;
memcpy(princ->name_parts[loop], xdr, tmp);
princ->name_parts[loop][tmp] = 0;
- tmp = (tmp + 3) & ~3;
- toklen -= tmp;
- xdr += tmp >> 2;
+ toklen -= paddedlen;
+ xdr += paddedlen >> 2;
}
if (toklen < 4)
@@ -263,16 +263,16 @@ static int rxrpc_krb5_decode_principal(struct krb5_principal *princ,
toklen -= 4;
if (tmp <= 0 || tmp > AFSTOKEN_K5_REALM_MAX)
return -EINVAL;
- if (tmp > toklen)
+ paddedlen = (tmp + 3) & ~3;
+ if (paddedlen > toklen)
return -EINVAL;
princ->realm = kmalloc(tmp + 1, GFP_KERNEL);
if (!princ->realm)
return -ENOMEM;
memcpy(princ->realm, xdr, tmp);
princ->realm[tmp] = 0;
- tmp = (tmp + 3) & ~3;
- toklen -= tmp;
- xdr += tmp >> 2;
+ toklen -= paddedlen;
+ xdr += paddedlen >> 2;
_debug("%s/...@%s", princ->name_parts[0], princ->realm);
@@ -291,7 +291,7 @@ static int rxrpc_krb5_decode_tagged_data(struct krb5_tagged_data *td,
unsigned int *_toklen)
{
const __be32 *xdr = *_xdr;
- unsigned int toklen = *_toklen, len;
+ unsigned int toklen = *_toklen, len, paddedlen;
/* there must be at least one tag and one length word */
if (toklen <= 8)
@@ -305,15 +305,17 @@ static int rxrpc_krb5_decode_tagged_data(struct krb5_tagged_data *td,
toklen -= 8;
if (len > max_data_size)
return -EINVAL;
+ paddedlen = (len + 3) & ~3;
+ if (paddedlen > toklen)
+ return -EINVAL;
td->data_len = len;
if (len > 0) {
td->data = kmemdup(xdr, len, GFP_KERNEL);
if (!td->data)
return -ENOMEM;
- len = (len + 3) & ~3;
- toklen -= len;
- xdr += len >> 2;
+ toklen -= paddedlen;
+ xdr += paddedlen >> 2;
}
_debug("tag %x len %x", td->tag, td->data_len);
@@ -385,7 +387,7 @@ static int rxrpc_krb5_decode_ticket(u8 **_ticket, u16 *_tktlen,
const __be32 **_xdr, unsigned int *_toklen)
{
const __be32 *xdr = *_xdr;
- unsigned int toklen = *_toklen, len;
+ unsigned int toklen = *_toklen, len, paddedlen;
/* there must be at least one length word */
if (toklen <= 4)
@@ -397,6 +399,9 @@ static int rxrpc_krb5_decode_ticket(u8 **_ticket, u16 *_tktlen,
toklen -= 4;
if (len > AFSTOKEN_K5_TIX_MAX)
return -EINVAL;
+ paddedlen = (len + 3) & ~3;
+ if (paddedlen > toklen)
+ return -EINVAL;
*_tktlen = len;
_debug("ticket len %u", len);
@@ -405,9 +410,8 @@ static int rxrpc_krb5_decode_ticket(u8 **_ticket, u16 *_tktlen,
*_ticket = kmemdup(xdr, len, GFP_KERNEL);
if (!*_ticket)
return -ENOMEM;
- len = (len + 3) & ~3;
- toklen -= len;
- xdr += len >> 2;
+ toklen -= paddedlen;
+ xdr += paddedlen >> 2;
}
*_xdr = xdr;
@@ -550,7 +554,7 @@ static int rxrpc_preparse_xdr(struct key_preparsed_payload *prep)
{
const __be32 *xdr = prep->data, *token;
const char *cp;
- unsigned int len, tmp, loop, ntoken, toklen, sec_ix;
+ unsigned int len, paddedlen, loop, ntoken, toklen, sec_ix;
size_t datalen = prep->datalen;
int ret;
@@ -576,22 +580,21 @@ static int rxrpc_preparse_xdr(struct key_preparsed_payload *prep)
if (len < 1 || len > AFSTOKEN_CELL_MAX)
goto not_xdr;
datalen -= 4;
- tmp = (len + 3) & ~3;
- if (tmp > datalen)
+ paddedlen = (len + 3) & ~3;
+ if (paddedlen > datalen)
goto not_xdr;
cp = (const char *) xdr;
for (loop = 0; loop < len; loop++)
if (!isprint(cp[loop]))
goto not_xdr;
- if (len < tmp)
- for (; loop < tmp; loop++)
- if (cp[loop])
- goto not_xdr;
+ for (; loop < paddedlen; loop++)
+ if (cp[loop])
+ goto not_xdr;
_debug("cellname: [%u/%u] '%*.*s'",
- len, tmp, len, len, (const char *) xdr);
- datalen -= tmp;
- xdr += tmp >> 2;
+ len, paddedlen, len, len, (const char *) xdr);
+ datalen -= paddedlen;
+ xdr += paddedlen >> 2;
/* get the token count */
if (datalen < 12)
@@ -612,10 +615,11 @@ static int rxrpc_preparse_xdr(struct key_preparsed_payload *prep)
sec_ix = ntohl(*xdr);
datalen -= 4;
_debug("token: [%x/%zx] %x", toklen, datalen, sec_ix);
- if (toklen < 20 || toklen > datalen)
+ paddedlen = (toklen + 3) & ~3;
+ if (toklen < 20 || toklen > datalen || paddedlen > datalen)
goto not_xdr;
- datalen -= (toklen + 3) & ~3;
- xdr += (toklen + 3) >> 2;
+ datalen -= paddedlen;
+ xdr += paddedlen >> 2;
} while (--loop > 0);
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