The patch below does not apply to the 6.1-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y
git checkout FETCH_HEAD
git cherry-pick -x 0bb0a5c12ecf36ad561542bbb95f96355e036a02
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024100741-afoot-canal-db89@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^..
Possible dependencies:
0bb0a5c12ecf ("tracing/timerlat: Fix duplicated kthread creation due to CPU online/offline")
177e1cc2f412 ("tracing/osnoise: Use a cpumask to know what threads are kthreads")
e88ed227f639 ("tracing/timerlat: Add user-space interface")
4998e7fda149 ("tracing/osnoise: Switch from PF_NO_SETAFFINITY to migrate_disable")
30838fcd8107 ("tracing/osnoise: Add OSNOISE_WORKLOAD option")
b179d48b6aab ("tracing/osnoise: Add osnoise/options file")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 0bb0a5c12ecf36ad561542bbb95f96355e036a02 Mon Sep 17 00:00:00 2001
From: Wei Li <liwei391(a)huawei.com>
Date: Tue, 24 Sep 2024 17:45:11 +0800
Subject: [PATCH] tracing/timerlat: Fix duplicated kthread creation due to CPU
online/offline
osnoise_hotplug_workfn() is the asynchronous online callback for
"trace/osnoise:online". It may be congested when a CPU goes online and
offline repeatedly and is invoked for multiple times after a certain
online.
This will lead to kthread leak and timer corruption. Add a check
in start_kthread() to prevent this situation.
Cc: stable(a)vger.kernel.org
Cc: Masami Hiramatsu <mhiramat(a)kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com>
Link: https://lore.kernel.org/20240924094515.3561410-2-liwei391@huawei.com
Fixes: c8895e271f79 ("trace/osnoise: Support hotplug operations")
Signed-off-by: Wei Li <liwei391(a)huawei.com>
Signed-off-by: Steven Rostedt (Google) <rostedt(a)goodmis.org>
diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c
index 1439064f65d6..d1a539913a5f 100644
--- a/kernel/trace/trace_osnoise.c
+++ b/kernel/trace/trace_osnoise.c
@@ -2007,6 +2007,10 @@ static int start_kthread(unsigned int cpu)
void *main = osnoise_main;
char comm[24];
+ /* Do not start a new thread if it is already running */
+ if (per_cpu(per_cpu_osnoise_var, cpu).kthread)
+ return 0;
+
if (timerlat_enabled()) {
snprintf(comm, 24, "timerlat/%d", cpu);
main = timerlat_main;
@@ -2061,11 +2065,10 @@ static int start_per_cpu_kthreads(void)
if (cpumask_test_and_clear_cpu(cpu, &kthread_cpumask)) {
struct task_struct *kthread;
- kthread = per_cpu(per_cpu_osnoise_var, cpu).kthread;
+ kthread = xchg_relaxed(&(per_cpu(per_cpu_osnoise_var, cpu).kthread), NULL);
if (!WARN_ON(!kthread))
kthread_stop(kthread);
}
- per_cpu(per_cpu_osnoise_var, cpu).kthread = NULL;
}
for_each_cpu(cpu, current_mask) {
The patch below does not apply to the 4.19-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-4.19.y
git checkout FETCH_HEAD
git cherry-pick -x b25e11f978b63cb7857890edb3a698599cddb10e
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024100729-covenant-overtly-0189@gregkh' --subject-prefix 'PATCH 4.19.y' HEAD^..
Possible dependencies:
b25e11f978b6 ("Bluetooth: hci_event: Align BR/EDR JUST_WORKS paring with LE")
3e54c5890c87 ("Bluetooth: hci_event: Use of a function table to handle HCI events")
12cfe4176ad6 ("Bluetooth: HCI: Use skb_pull_data to parse LE Metaevents")
70a6b8de6af5 ("Bluetooth: HCI: Use skb_pull_data to parse Extended Inquiry Result event")
8d08d324fdcb ("Bluetooth: HCI: Use skb_pull_data to parse Inquiry Result with RSSI event")
27d9eb4bcac1 ("Bluetooth: HCI: Use skb_pull_data to parse Inquiry Result event")
aadc3d2f42a5 ("Bluetooth: HCI: Use skb_pull_data to parse Number of Complete Packets event")
e3f3a1aea871 ("Bluetooth: HCI: Use skb_pull_data to parse Command Complete event")
ae61a10d9d46 ("Bluetooth: HCI: Use skb_pull_data to parse BR/EDR events")
3244845c6307 ("Bluetooth: hci_sync: Convert MGMT_OP_SSP")
6f6ff38a1e14 ("Bluetooth: hci_sync: Convert MGMT_OP_SET_LOCAL_NAME")
cf75ad8b41d2 ("Bluetooth: hci_sync: Convert MGMT_SET_POWERED")
ad383c2c65a5 ("Bluetooth: hci_sync: Enable advertising when LL privacy is enabled")
e8907f76544f ("Bluetooth: hci_sync: Make use of hci_cmd_sync_queue set 3")
cba6b758711c ("Bluetooth: hci_sync: Make use of hci_cmd_sync_queue set 2")
161510ccf91c ("Bluetooth: hci_sync: Make use of hci_cmd_sync_queue set 1")
6a98e3836fa2 ("Bluetooth: Add helper for serialized HCI command execution")
4139ff008330 ("Bluetooth: Fix wrong opcode when LL privacy enabled")
01ce70b0a274 ("Bluetooth: eir: Move EIR/Adv Data functions to its own file")
5031ffcc79b8 ("Bluetooth: Keep MSFT ext info throughout a hci_dev's life cycle")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From b25e11f978b63cb7857890edb3a698599cddb10e Mon Sep 17 00:00:00 2001
From: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com>
Date: Thu, 12 Sep 2024 12:17:00 -0400
Subject: [PATCH] Bluetooth: hci_event: Align BR/EDR JUST_WORKS paring with LE
This aligned BR/EDR JUST_WORKS method with LE which since 92516cd97fd4
("Bluetooth: Always request for user confirmation for Just Works")
always request user confirmation with confirm_hint set since the
likes of bluetoothd have dedicated policy around JUST_WORKS method
(e.g. main.conf:JustWorksRepairing).
CVE: CVE-2024-8805
Cc: stable(a)vger.kernel.org
Fixes: ba15a58b179e ("Bluetooth: Fix SSP acceptor just-works confirmation without MITM")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com>
Tested-by: Kiran K <kiran.k(a)intel.com>
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index b87c0f1dab9e..561c8cb87473 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -5324,19 +5324,16 @@ static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data,
goto unlock;
}
- /* If no side requires MITM protection; auto-accept */
+ /* If no side requires MITM protection; use JUST_CFM method */
if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
(!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
- /* If we're not the initiators request authorization to
- * proceed from user space (mgmt_user_confirm with
- * confirm_hint set to 1). The exception is if neither
- * side had MITM or if the local IO capability is
- * NoInputNoOutput, in which case we do auto-accept
+ /* If we're not the initiator of request authorization and the
+ * local IO capability is not NoInputNoOutput, use JUST_WORKS
+ * method (mgmt_user_confirm with confirm_hint set to 1).
*/
if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
- conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
- (loc_mitm || rem_mitm)) {
+ conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) {
bt_dev_dbg(hdev, "Confirming auto-accept as acceptor");
confirm_hint = 1;
goto confirm;
The patch below does not apply to the 5.4-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y
git checkout FETCH_HEAD
git cherry-pick -x b25e11f978b63cb7857890edb3a698599cddb10e
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024100728-gentleman-exodus-8ae2@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^..
Possible dependencies:
b25e11f978b6 ("Bluetooth: hci_event: Align BR/EDR JUST_WORKS paring with LE")
3e54c5890c87 ("Bluetooth: hci_event: Use of a function table to handle HCI events")
12cfe4176ad6 ("Bluetooth: HCI: Use skb_pull_data to parse LE Metaevents")
70a6b8de6af5 ("Bluetooth: HCI: Use skb_pull_data to parse Extended Inquiry Result event")
8d08d324fdcb ("Bluetooth: HCI: Use skb_pull_data to parse Inquiry Result with RSSI event")
27d9eb4bcac1 ("Bluetooth: HCI: Use skb_pull_data to parse Inquiry Result event")
aadc3d2f42a5 ("Bluetooth: HCI: Use skb_pull_data to parse Number of Complete Packets event")
e3f3a1aea871 ("Bluetooth: HCI: Use skb_pull_data to parse Command Complete event")
ae61a10d9d46 ("Bluetooth: HCI: Use skb_pull_data to parse BR/EDR events")
3244845c6307 ("Bluetooth: hci_sync: Convert MGMT_OP_SSP")
6f6ff38a1e14 ("Bluetooth: hci_sync: Convert MGMT_OP_SET_LOCAL_NAME")
cf75ad8b41d2 ("Bluetooth: hci_sync: Convert MGMT_SET_POWERED")
ad383c2c65a5 ("Bluetooth: hci_sync: Enable advertising when LL privacy is enabled")
e8907f76544f ("Bluetooth: hci_sync: Make use of hci_cmd_sync_queue set 3")
cba6b758711c ("Bluetooth: hci_sync: Make use of hci_cmd_sync_queue set 2")
161510ccf91c ("Bluetooth: hci_sync: Make use of hci_cmd_sync_queue set 1")
6a98e3836fa2 ("Bluetooth: Add helper for serialized HCI command execution")
4139ff008330 ("Bluetooth: Fix wrong opcode when LL privacy enabled")
01ce70b0a274 ("Bluetooth: eir: Move EIR/Adv Data functions to its own file")
5031ffcc79b8 ("Bluetooth: Keep MSFT ext info throughout a hci_dev's life cycle")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From b25e11f978b63cb7857890edb3a698599cddb10e Mon Sep 17 00:00:00 2001
From: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com>
Date: Thu, 12 Sep 2024 12:17:00 -0400
Subject: [PATCH] Bluetooth: hci_event: Align BR/EDR JUST_WORKS paring with LE
This aligned BR/EDR JUST_WORKS method with LE which since 92516cd97fd4
("Bluetooth: Always request for user confirmation for Just Works")
always request user confirmation with confirm_hint set since the
likes of bluetoothd have dedicated policy around JUST_WORKS method
(e.g. main.conf:JustWorksRepairing).
CVE: CVE-2024-8805
Cc: stable(a)vger.kernel.org
Fixes: ba15a58b179e ("Bluetooth: Fix SSP acceptor just-works confirmation without MITM")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com>
Tested-by: Kiran K <kiran.k(a)intel.com>
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index b87c0f1dab9e..561c8cb87473 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -5324,19 +5324,16 @@ static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data,
goto unlock;
}
- /* If no side requires MITM protection; auto-accept */
+ /* If no side requires MITM protection; use JUST_CFM method */
if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
(!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
- /* If we're not the initiators request authorization to
- * proceed from user space (mgmt_user_confirm with
- * confirm_hint set to 1). The exception is if neither
- * side had MITM or if the local IO capability is
- * NoInputNoOutput, in which case we do auto-accept
+ /* If we're not the initiator of request authorization and the
+ * local IO capability is not NoInputNoOutput, use JUST_WORKS
+ * method (mgmt_user_confirm with confirm_hint set to 1).
*/
if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
- conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
- (loc_mitm || rem_mitm)) {
+ conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) {
bt_dev_dbg(hdev, "Confirming auto-accept as acceptor");
confirm_hint = 1;
goto confirm;
The patch below does not apply to the 5.10-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y
git checkout FETCH_HEAD
git cherry-pick -x b25e11f978b63cb7857890edb3a698599cddb10e
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024100727-emission-slot-94cc@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^..
Possible dependencies:
b25e11f978b6 ("Bluetooth: hci_event: Align BR/EDR JUST_WORKS paring with LE")
3e54c5890c87 ("Bluetooth: hci_event: Use of a function table to handle HCI events")
12cfe4176ad6 ("Bluetooth: HCI: Use skb_pull_data to parse LE Metaevents")
70a6b8de6af5 ("Bluetooth: HCI: Use skb_pull_data to parse Extended Inquiry Result event")
8d08d324fdcb ("Bluetooth: HCI: Use skb_pull_data to parse Inquiry Result with RSSI event")
27d9eb4bcac1 ("Bluetooth: HCI: Use skb_pull_data to parse Inquiry Result event")
aadc3d2f42a5 ("Bluetooth: HCI: Use skb_pull_data to parse Number of Complete Packets event")
e3f3a1aea871 ("Bluetooth: HCI: Use skb_pull_data to parse Command Complete event")
ae61a10d9d46 ("Bluetooth: HCI: Use skb_pull_data to parse BR/EDR events")
3244845c6307 ("Bluetooth: hci_sync: Convert MGMT_OP_SSP")
6f6ff38a1e14 ("Bluetooth: hci_sync: Convert MGMT_OP_SET_LOCAL_NAME")
cf75ad8b41d2 ("Bluetooth: hci_sync: Convert MGMT_SET_POWERED")
ad383c2c65a5 ("Bluetooth: hci_sync: Enable advertising when LL privacy is enabled")
e8907f76544f ("Bluetooth: hci_sync: Make use of hci_cmd_sync_queue set 3")
cba6b758711c ("Bluetooth: hci_sync: Make use of hci_cmd_sync_queue set 2")
161510ccf91c ("Bluetooth: hci_sync: Make use of hci_cmd_sync_queue set 1")
6a98e3836fa2 ("Bluetooth: Add helper for serialized HCI command execution")
4139ff008330 ("Bluetooth: Fix wrong opcode when LL privacy enabled")
01ce70b0a274 ("Bluetooth: eir: Move EIR/Adv Data functions to its own file")
5031ffcc79b8 ("Bluetooth: Keep MSFT ext info throughout a hci_dev's life cycle")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From b25e11f978b63cb7857890edb3a698599cddb10e Mon Sep 17 00:00:00 2001
From: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com>
Date: Thu, 12 Sep 2024 12:17:00 -0400
Subject: [PATCH] Bluetooth: hci_event: Align BR/EDR JUST_WORKS paring with LE
This aligned BR/EDR JUST_WORKS method with LE which since 92516cd97fd4
("Bluetooth: Always request for user confirmation for Just Works")
always request user confirmation with confirm_hint set since the
likes of bluetoothd have dedicated policy around JUST_WORKS method
(e.g. main.conf:JustWorksRepairing).
CVE: CVE-2024-8805
Cc: stable(a)vger.kernel.org
Fixes: ba15a58b179e ("Bluetooth: Fix SSP acceptor just-works confirmation without MITM")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com>
Tested-by: Kiran K <kiran.k(a)intel.com>
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index b87c0f1dab9e..561c8cb87473 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -5324,19 +5324,16 @@ static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data,
goto unlock;
}
- /* If no side requires MITM protection; auto-accept */
+ /* If no side requires MITM protection; use JUST_CFM method */
if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
(!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
- /* If we're not the initiators request authorization to
- * proceed from user space (mgmt_user_confirm with
- * confirm_hint set to 1). The exception is if neither
- * side had MITM or if the local IO capability is
- * NoInputNoOutput, in which case we do auto-accept
+ /* If we're not the initiator of request authorization and the
+ * local IO capability is not NoInputNoOutput, use JUST_WORKS
+ * method (mgmt_user_confirm with confirm_hint set to 1).
*/
if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
- conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
- (loc_mitm || rem_mitm)) {
+ conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) {
bt_dev_dbg(hdev, "Confirming auto-accept as acceptor");
confirm_hint = 1;
goto confirm;
The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y
git checkout FETCH_HEAD
git cherry-pick -x b25e11f978b63cb7857890edb3a698599cddb10e
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024100727-switch-reaffirm-2dec@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^..
Possible dependencies:
b25e11f978b6 ("Bluetooth: hci_event: Align BR/EDR JUST_WORKS paring with LE")
3e54c5890c87 ("Bluetooth: hci_event: Use of a function table to handle HCI events")
12cfe4176ad6 ("Bluetooth: HCI: Use skb_pull_data to parse LE Metaevents")
70a6b8de6af5 ("Bluetooth: HCI: Use skb_pull_data to parse Extended Inquiry Result event")
8d08d324fdcb ("Bluetooth: HCI: Use skb_pull_data to parse Inquiry Result with RSSI event")
27d9eb4bcac1 ("Bluetooth: HCI: Use skb_pull_data to parse Inquiry Result event")
aadc3d2f42a5 ("Bluetooth: HCI: Use skb_pull_data to parse Number of Complete Packets event")
e3f3a1aea871 ("Bluetooth: HCI: Use skb_pull_data to parse Command Complete event")
ae61a10d9d46 ("Bluetooth: HCI: Use skb_pull_data to parse BR/EDR events")
3244845c6307 ("Bluetooth: hci_sync: Convert MGMT_OP_SSP")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From b25e11f978b63cb7857890edb3a698599cddb10e Mon Sep 17 00:00:00 2001
From: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com>
Date: Thu, 12 Sep 2024 12:17:00 -0400
Subject: [PATCH] Bluetooth: hci_event: Align BR/EDR JUST_WORKS paring with LE
This aligned BR/EDR JUST_WORKS method with LE which since 92516cd97fd4
("Bluetooth: Always request for user confirmation for Just Works")
always request user confirmation with confirm_hint set since the
likes of bluetoothd have dedicated policy around JUST_WORKS method
(e.g. main.conf:JustWorksRepairing).
CVE: CVE-2024-8805
Cc: stable(a)vger.kernel.org
Fixes: ba15a58b179e ("Bluetooth: Fix SSP acceptor just-works confirmation without MITM")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com>
Tested-by: Kiran K <kiran.k(a)intel.com>
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index b87c0f1dab9e..561c8cb87473 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -5324,19 +5324,16 @@ static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data,
goto unlock;
}
- /* If no side requires MITM protection; auto-accept */
+ /* If no side requires MITM protection; use JUST_CFM method */
if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
(!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
- /* If we're not the initiators request authorization to
- * proceed from user space (mgmt_user_confirm with
- * confirm_hint set to 1). The exception is if neither
- * side had MITM or if the local IO capability is
- * NoInputNoOutput, in which case we do auto-accept
+ /* If we're not the initiator of request authorization and the
+ * local IO capability is not NoInputNoOutput, use JUST_WORKS
+ * method (mgmt_user_confirm with confirm_hint set to 1).
*/
if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
- conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
- (loc_mitm || rem_mitm)) {
+ conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) {
bt_dev_dbg(hdev, "Confirming auto-accept as acceptor");
confirm_hint = 1;
goto confirm;
The patch below does not apply to the 4.19-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-4.19.y
git checkout FETCH_HEAD
git cherry-pick -x 34820304cc2cd1804ee1f8f3504ec77813d29c8e
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024100702-doze-flashy-bbe9@gregkh' --subject-prefix 'PATCH 4.19.y' HEAD^..
Possible dependencies:
34820304cc2c ("uprobes: fix kernel info leak via "[uprobes]" vma")
2abbcc099ec6 ("uprobes: turn xol_area->pages[2] into xol_area->page")
6d27a31ef195 ("uprobes: introduce the global struct vm_special_mapping xol_mapping")
ff474a78cef5 ("uprobe: Add uretprobe syscall to speed up return probe")
1713b63a07a2 ("x86/shstk: Make return uprobe work with shadow stack")
05e36022c054 ("x86/shstk: Handle signals for shadow stack")
928054769dbd ("x86/shstk: Introduce routines modifying shstk")
b2926a36b97a ("x86/shstk: Handle thread shadow stack")
2d39a6add422 ("x86/shstk: Add user-mode shadow stack support")
98cfa4630912 ("x86: Introduce userspace API for shadow stack")
2da5b91fe409 ("x86/traps: Move control protection handler to separate file")
2f8794bd087e ("x86/mm: Provide arch_prctl() interface for LAM")
74c228d20a51 ("x86/uaccess: Provide untagged_addr() and remove tags before address check")
82721d8b25d7 ("x86/mm: Handle LAM on context switch")
5ef495e55f07 ("x86: Allow atomic MM_CONTEXT flags setting")
94a855111ed9 ("Merge tag 'x86_core_for_v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 34820304cc2cd1804ee1f8f3504ec77813d29c8e Mon Sep 17 00:00:00 2001
From: Oleg Nesterov <oleg(a)redhat.com>
Date: Sun, 29 Sep 2024 18:20:47 +0200
Subject: [PATCH] uprobes: fix kernel info leak via "[uprobes]" vma
xol_add_vma() maps the uninitialized page allocated by __create_xol_area()
into userspace. On some architectures (x86) this memory is readable even
without VM_READ, VM_EXEC results in the same pgprot_t as VM_EXEC|VM_READ,
although this doesn't really matter, debugger can read this memory anyway.
Link: https://lore.kernel.org/all/20240929162047.GA12611@redhat.com/
Reported-by: Will Deacon <will(a)kernel.org>
Fixes: d4b3b6384f98 ("uprobes/core: Allocate XOL slots for uprobes use")
Cc: stable(a)vger.kernel.org
Acked-by: Masami Hiramatsu (Google) <mhiramat(a)kernel.org>
Signed-off-by: Oleg Nesterov <oleg(a)redhat.com>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat(a)kernel.org>
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index 2ec796e2f055..4b52cb2ae6d6 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -1545,7 +1545,7 @@ static struct xol_area *__create_xol_area(unsigned long vaddr)
if (!area->bitmap)
goto free_area;
- area->page = alloc_page(GFP_HIGHUSER);
+ area->page = alloc_page(GFP_HIGHUSER | __GFP_ZERO);
if (!area->page)
goto free_bitmap;
The patch below does not apply to the 5.4-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y
git checkout FETCH_HEAD
git cherry-pick -x 34820304cc2cd1804ee1f8f3504ec77813d29c8e
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024100701-rage-cape-ea74@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^..
Possible dependencies:
34820304cc2c ("uprobes: fix kernel info leak via "[uprobes]" vma")
2abbcc099ec6 ("uprobes: turn xol_area->pages[2] into xol_area->page")
6d27a31ef195 ("uprobes: introduce the global struct vm_special_mapping xol_mapping")
ff474a78cef5 ("uprobe: Add uretprobe syscall to speed up return probe")
1713b63a07a2 ("x86/shstk: Make return uprobe work with shadow stack")
05e36022c054 ("x86/shstk: Handle signals for shadow stack")
928054769dbd ("x86/shstk: Introduce routines modifying shstk")
b2926a36b97a ("x86/shstk: Handle thread shadow stack")
2d39a6add422 ("x86/shstk: Add user-mode shadow stack support")
98cfa4630912 ("x86: Introduce userspace API for shadow stack")
2da5b91fe409 ("x86/traps: Move control protection handler to separate file")
2f8794bd087e ("x86/mm: Provide arch_prctl() interface for LAM")
74c228d20a51 ("x86/uaccess: Provide untagged_addr() and remove tags before address check")
82721d8b25d7 ("x86/mm: Handle LAM on context switch")
5ef495e55f07 ("x86: Allow atomic MM_CONTEXT flags setting")
94a855111ed9 ("Merge tag 'x86_core_for_v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 34820304cc2cd1804ee1f8f3504ec77813d29c8e Mon Sep 17 00:00:00 2001
From: Oleg Nesterov <oleg(a)redhat.com>
Date: Sun, 29 Sep 2024 18:20:47 +0200
Subject: [PATCH] uprobes: fix kernel info leak via "[uprobes]" vma
xol_add_vma() maps the uninitialized page allocated by __create_xol_area()
into userspace. On some architectures (x86) this memory is readable even
without VM_READ, VM_EXEC results in the same pgprot_t as VM_EXEC|VM_READ,
although this doesn't really matter, debugger can read this memory anyway.
Link: https://lore.kernel.org/all/20240929162047.GA12611@redhat.com/
Reported-by: Will Deacon <will(a)kernel.org>
Fixes: d4b3b6384f98 ("uprobes/core: Allocate XOL slots for uprobes use")
Cc: stable(a)vger.kernel.org
Acked-by: Masami Hiramatsu (Google) <mhiramat(a)kernel.org>
Signed-off-by: Oleg Nesterov <oleg(a)redhat.com>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat(a)kernel.org>
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index 2ec796e2f055..4b52cb2ae6d6 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -1545,7 +1545,7 @@ static struct xol_area *__create_xol_area(unsigned long vaddr)
if (!area->bitmap)
goto free_area;
- area->page = alloc_page(GFP_HIGHUSER);
+ area->page = alloc_page(GFP_HIGHUSER | __GFP_ZERO);
if (!area->page)
goto free_bitmap;
The patch below does not apply to the 5.10-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y
git checkout FETCH_HEAD
git cherry-pick -x 34820304cc2cd1804ee1f8f3504ec77813d29c8e
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024100701-subtotal-scurvy-8511@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^..
Possible dependencies:
34820304cc2c ("uprobes: fix kernel info leak via "[uprobes]" vma")
2abbcc099ec6 ("uprobes: turn xol_area->pages[2] into xol_area->page")
6d27a31ef195 ("uprobes: introduce the global struct vm_special_mapping xol_mapping")
ff474a78cef5 ("uprobe: Add uretprobe syscall to speed up return probe")
1713b63a07a2 ("x86/shstk: Make return uprobe work with shadow stack")
05e36022c054 ("x86/shstk: Handle signals for shadow stack")
928054769dbd ("x86/shstk: Introduce routines modifying shstk")
b2926a36b97a ("x86/shstk: Handle thread shadow stack")
2d39a6add422 ("x86/shstk: Add user-mode shadow stack support")
98cfa4630912 ("x86: Introduce userspace API for shadow stack")
2da5b91fe409 ("x86/traps: Move control protection handler to separate file")
2f8794bd087e ("x86/mm: Provide arch_prctl() interface for LAM")
74c228d20a51 ("x86/uaccess: Provide untagged_addr() and remove tags before address check")
82721d8b25d7 ("x86/mm: Handle LAM on context switch")
5ef495e55f07 ("x86: Allow atomic MM_CONTEXT flags setting")
94a855111ed9 ("Merge tag 'x86_core_for_v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 34820304cc2cd1804ee1f8f3504ec77813d29c8e Mon Sep 17 00:00:00 2001
From: Oleg Nesterov <oleg(a)redhat.com>
Date: Sun, 29 Sep 2024 18:20:47 +0200
Subject: [PATCH] uprobes: fix kernel info leak via "[uprobes]" vma
xol_add_vma() maps the uninitialized page allocated by __create_xol_area()
into userspace. On some architectures (x86) this memory is readable even
without VM_READ, VM_EXEC results in the same pgprot_t as VM_EXEC|VM_READ,
although this doesn't really matter, debugger can read this memory anyway.
Link: https://lore.kernel.org/all/20240929162047.GA12611@redhat.com/
Reported-by: Will Deacon <will(a)kernel.org>
Fixes: d4b3b6384f98 ("uprobes/core: Allocate XOL slots for uprobes use")
Cc: stable(a)vger.kernel.org
Acked-by: Masami Hiramatsu (Google) <mhiramat(a)kernel.org>
Signed-off-by: Oleg Nesterov <oleg(a)redhat.com>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat(a)kernel.org>
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index 2ec796e2f055..4b52cb2ae6d6 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -1545,7 +1545,7 @@ static struct xol_area *__create_xol_area(unsigned long vaddr)
if (!area->bitmap)
goto free_area;
- area->page = alloc_page(GFP_HIGHUSER);
+ area->page = alloc_page(GFP_HIGHUSER | __GFP_ZERO);
if (!area->page)
goto free_bitmap;
The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y
git checkout FETCH_HEAD
git cherry-pick -x 34820304cc2cd1804ee1f8f3504ec77813d29c8e
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024100700-debatable-kerchief-a632@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^..
Possible dependencies:
34820304cc2c ("uprobes: fix kernel info leak via "[uprobes]" vma")
2abbcc099ec6 ("uprobes: turn xol_area->pages[2] into xol_area->page")
6d27a31ef195 ("uprobes: introduce the global struct vm_special_mapping xol_mapping")
ff474a78cef5 ("uprobe: Add uretprobe syscall to speed up return probe")
1713b63a07a2 ("x86/shstk: Make return uprobe work with shadow stack")
05e36022c054 ("x86/shstk: Handle signals for shadow stack")
928054769dbd ("x86/shstk: Introduce routines modifying shstk")
b2926a36b97a ("x86/shstk: Handle thread shadow stack")
2d39a6add422 ("x86/shstk: Add user-mode shadow stack support")
98cfa4630912 ("x86: Introduce userspace API for shadow stack")
2da5b91fe409 ("x86/traps: Move control protection handler to separate file")
2f8794bd087e ("x86/mm: Provide arch_prctl() interface for LAM")
74c228d20a51 ("x86/uaccess: Provide untagged_addr() and remove tags before address check")
82721d8b25d7 ("x86/mm: Handle LAM on context switch")
5ef495e55f07 ("x86: Allow atomic MM_CONTEXT flags setting")
94a855111ed9 ("Merge tag 'x86_core_for_v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 34820304cc2cd1804ee1f8f3504ec77813d29c8e Mon Sep 17 00:00:00 2001
From: Oleg Nesterov <oleg(a)redhat.com>
Date: Sun, 29 Sep 2024 18:20:47 +0200
Subject: [PATCH] uprobes: fix kernel info leak via "[uprobes]" vma
xol_add_vma() maps the uninitialized page allocated by __create_xol_area()
into userspace. On some architectures (x86) this memory is readable even
without VM_READ, VM_EXEC results in the same pgprot_t as VM_EXEC|VM_READ,
although this doesn't really matter, debugger can read this memory anyway.
Link: https://lore.kernel.org/all/20240929162047.GA12611@redhat.com/
Reported-by: Will Deacon <will(a)kernel.org>
Fixes: d4b3b6384f98 ("uprobes/core: Allocate XOL slots for uprobes use")
Cc: stable(a)vger.kernel.org
Acked-by: Masami Hiramatsu (Google) <mhiramat(a)kernel.org>
Signed-off-by: Oleg Nesterov <oleg(a)redhat.com>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat(a)kernel.org>
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index 2ec796e2f055..4b52cb2ae6d6 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -1545,7 +1545,7 @@ static struct xol_area *__create_xol_area(unsigned long vaddr)
if (!area->bitmap)
goto free_area;
- area->page = alloc_page(GFP_HIGHUSER);
+ area->page = alloc_page(GFP_HIGHUSER | __GFP_ZERO);
if (!area->page)
goto free_bitmap;
The patch below does not apply to the 6.6-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y
git checkout FETCH_HEAD
git cherry-pick -x 34820304cc2cd1804ee1f8f3504ec77813d29c8e
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024100758-mossy-data-89d8@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^..
Possible dependencies:
34820304cc2c ("uprobes: fix kernel info leak via "[uprobes]" vma")
2abbcc099ec6 ("uprobes: turn xol_area->pages[2] into xol_area->page")
6d27a31ef195 ("uprobes: introduce the global struct vm_special_mapping xol_mapping")
ff474a78cef5 ("uprobe: Add uretprobe syscall to speed up return probe")
1713b63a07a2 ("x86/shstk: Make return uprobe work with shadow stack")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 34820304cc2cd1804ee1f8f3504ec77813d29c8e Mon Sep 17 00:00:00 2001
From: Oleg Nesterov <oleg(a)redhat.com>
Date: Sun, 29 Sep 2024 18:20:47 +0200
Subject: [PATCH] uprobes: fix kernel info leak via "[uprobes]" vma
xol_add_vma() maps the uninitialized page allocated by __create_xol_area()
into userspace. On some architectures (x86) this memory is readable even
without VM_READ, VM_EXEC results in the same pgprot_t as VM_EXEC|VM_READ,
although this doesn't really matter, debugger can read this memory anyway.
Link: https://lore.kernel.org/all/20240929162047.GA12611@redhat.com/
Reported-by: Will Deacon <will(a)kernel.org>
Fixes: d4b3b6384f98 ("uprobes/core: Allocate XOL slots for uprobes use")
Cc: stable(a)vger.kernel.org
Acked-by: Masami Hiramatsu (Google) <mhiramat(a)kernel.org>
Signed-off-by: Oleg Nesterov <oleg(a)redhat.com>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat(a)kernel.org>
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index 2ec796e2f055..4b52cb2ae6d6 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -1545,7 +1545,7 @@ static struct xol_area *__create_xol_area(unsigned long vaddr)
if (!area->bitmap)
goto free_area;
- area->page = alloc_page(GFP_HIGHUSER);
+ area->page = alloc_page(GFP_HIGHUSER | __GFP_ZERO);
if (!area->page)
goto free_bitmap;