--- /dev/null
+From fb3c007fde80d9d3b4207943e74c150c9116cead Mon Sep 17 00:00:00 2001
+From: Bin Li <bin.li@canonical.com>
+Date: Wed, 17 Jan 2024 23:41:23 +0800
+Subject: ALSA: hda/realtek: Enable headset mic on Lenovo M70 Gen5
+
+From: Bin Li <bin.li@canonical.com>
+
+commit fb3c007fde80d9d3b4207943e74c150c9116cead upstream.
+
+Lenovo M70 Gen5 is equipped with ALC623, and it needs
+ALC283_FIXUP_HEADSET_MIC quirk to make its headset mic work.
+
+Signed-off-by: Bin Li <bin.li@canonical.com>
+Cc: <stable@vger.kernel.org>
+Link: https://lore.kernel.org/r/20240117154123.21578-1-bin.li@canonical.com
+Signed-off-by: Takashi Iwai <tiwai@suse.de>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ sound/pci/hda/patch_realtek.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -10220,6 +10220,7 @@ static const struct snd_pci_quirk alc269
+ SND_PCI_QUIRK(0x17aa, 0x3176, "ThinkCentre Station", ALC283_FIXUP_HEADSET_MIC),
+ SND_PCI_QUIRK(0x17aa, 0x3178, "ThinkCentre Station", ALC283_FIXUP_HEADSET_MIC),
+ SND_PCI_QUIRK(0x17aa, 0x31af, "ThinkCentre Station", ALC623_FIXUP_LENOVO_THINKSTATION_P340),
++ SND_PCI_QUIRK(0x17aa, 0x334b, "Lenovo ThinkCentre M70 Gen5", ALC283_FIXUP_HEADSET_MIC),
+ SND_PCI_QUIRK(0x17aa, 0x3801, "Lenovo Yoga9 14IAP7", ALC287_FIXUP_YOGA9_14IAP7_BASS_SPK_PIN),
+ SND_PCI_QUIRK(0x17aa, 0x3802, "Lenovo Yoga DuetITL 2021", ALC287_FIXUP_YOGA7_14ITL_SPEAKERS),
+ SND_PCI_QUIRK(0x17aa, 0x3813, "Legion 7i 15IMHG05", ALC287_FIXUP_LEGION_15IMHG05_SPEAKERS),
--- /dev/null
+From b018cee7369896c7a15bfdbe88f168f3dbd8ba27 Mon Sep 17 00:00:00 2001
+From: Yo-Jung Lin <leo.lin@canonical.com>
+Date: Tue, 16 Jan 2024 10:07:19 +0800
+Subject: ALSA: hda/realtek: Enable mute/micmute LEDs and limit mic boost on HP ZBook
+
+From: Yo-Jung Lin <leo.lin@canonical.com>
+
+commit b018cee7369896c7a15bfdbe88f168f3dbd8ba27 upstream.
+
+On some HP ZBooks, the audio LEDs can be enabled by
+ALC236_FIXUP_HP_MUTE_LED_MICMUTE_VREF. So use it accordingly.
+
+Signed-off-by: Yo-Jung Lin <leo.lin@canonical.com>
+Cc: <stable@vger.kernel.org>
+Link: https://lore.kernel.org/r/20240116020722.27236-1-leo.lin@canonical.com
+Signed-off-by: Takashi Iwai <tiwai@suse.de>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ sound/pci/hda/patch_realtek.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -9943,6 +9943,7 @@ static const struct snd_pci_quirk alc269
+ SND_PCI_QUIRK(0x103c, 0x8c71, "HP EliteBook 845 G11", ALC287_FIXUP_CS35L41_I2C_2_HP_GPIO_LED),
+ SND_PCI_QUIRK(0x103c, 0x8c72, "HP EliteBook 865 G11", ALC287_FIXUP_CS35L41_I2C_2_HP_GPIO_LED),
+ SND_PCI_QUIRK(0x103c, 0x8c96, "HP", ALC236_FIXUP_HP_MUTE_LED_MICMUTE_VREF),
++ SND_PCI_QUIRK(0x103c, 0x8c97, "HP ZBook", ALC236_FIXUP_HP_MUTE_LED_MICMUTE_VREF),
+ SND_PCI_QUIRK(0x103c, 0x8ca4, "HP ZBook Fury", ALC245_FIXUP_CS35L41_SPI_2_HP_GPIO_LED),
+ SND_PCI_QUIRK(0x103c, 0x8ca7, "HP ZBook Fury", ALC245_FIXUP_CS35L41_SPI_2_HP_GPIO_LED),
+ SND_PCI_QUIRK(0x103c, 0x8cf5, "HP ZBook Studio 16", ALC245_FIXUP_CS35L41_SPI_4_HP_GPIO_LED),
--- /dev/null
+From bc7863d18677df66b2c7a0e172c91296ff380f11 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?=C3=87a=C4=9Fhan=20Demir?= <caghandemir@marun.edu.tr>
+Date: Mon, 15 Jan 2024 20:23:03 +0300
+Subject: ALSA: hda/relatek: Enable Mute LED on HP Laptop 15s-fq2xxx
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+From: Çağhan Demir <caghandemir@marun.edu.tr>
+
+commit bc7863d18677df66b2c7a0e172c91296ff380f11 upstream.
+
+This HP Laptop uses ALC236 codec with COEF 0x07 idx 1 controlling
+the mute LED. This patch enables the already existing quirk for
+this device.
+
+Signed-off-by: Çağhan Demir <caghandemir@marun.edu.tr>
+Cc: <stable@vger.kernel.org>
+Link: https://lore.kernel.org/r/20240115172303.4718-1-caghandemir@marun.edu.tr
+Signed-off-by: Takashi Iwai <tiwai@suse.de>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ sound/pci/hda/patch_realtek.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -9848,6 +9848,7 @@ static const struct snd_pci_quirk alc269
+ SND_PCI_QUIRK(0x103c, 0x87f5, "HP", ALC287_FIXUP_HP_GPIO_LED),
+ SND_PCI_QUIRK(0x103c, 0x87f6, "HP Spectre x360 14", ALC245_FIXUP_HP_X360_AMP),
+ SND_PCI_QUIRK(0x103c, 0x87f7, "HP Spectre x360 14", ALC245_FIXUP_HP_X360_AMP),
++ SND_PCI_QUIRK(0x103c, 0x87fe, "HP Laptop 15s-fq2xxx", ALC236_FIXUP_HP_MUTE_LED_COEFBIT2),
+ SND_PCI_QUIRK(0x103c, 0x8805, "HP ProBook 650 G8 Notebook PC", ALC236_FIXUP_HP_GPIO_LED),
+ SND_PCI_QUIRK(0x103c, 0x880d, "HP EliteBook 830 G8 Notebook PC", ALC285_FIXUP_HP_GPIO_LED),
+ SND_PCI_QUIRK(0x103c, 0x8811, "HP Spectre x360 15-eb1xxx", ALC285_FIXUP_HP_SPECTRE_X360_EB1),
--- /dev/null
+From a03cfad512ac24a35184d7d87ec0d5489e1cb763 Mon Sep 17 00:00:00 2001
+From: Takashi Iwai <tiwai@suse.de>
+Date: Fri, 12 Jan 2024 12:10:23 +0100
+Subject: ALSA: oxygen: Fix right channel of capture volume mixer
+
+From: Takashi Iwai <tiwai@suse.de>
+
+commit a03cfad512ac24a35184d7d87ec0d5489e1cb763 upstream.
+
+There was a typo in oxygen mixer code that didn't update the right
+channel value properly for the capture volume. Let's fix it.
+
+This trivial fix was originally reported on Bugzilla.
+
+Fixes: a3601560496d ("[ALSA] oxygen: add front panel controls")
+Cc: <stable@vger.kernel.org>
+Link: https://bugzilla.kernel.org/show_bug.cgi?id=156561
+Link: https://lore.kernel.org/r/20240112111023.6208-1-tiwai@suse.de
+Signed-off-by: Takashi Iwai <tiwai@suse.de>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ sound/pci/oxygen/oxygen_mixer.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/sound/pci/oxygen/oxygen_mixer.c
++++ b/sound/pci/oxygen/oxygen_mixer.c
+@@ -718,7 +718,7 @@ static int ac97_fp_rec_volume_put(struct
+ oldreg = oxygen_read_ac97(chip, 1, AC97_REC_GAIN);
+ newreg = oldreg & ~0x0707;
+ newreg = newreg | (value->value.integer.value[0] & 7);
+- newreg = newreg | ((value->value.integer.value[0] & 7) << 8);
++ newreg = newreg | ((value->value.integer.value[1] & 7) << 8);
+ change = newreg != oldreg;
+ if (change)
+ oxygen_write_ac97(chip, 1, AC97_REC_GAIN, newreg);
--- /dev/null
+From 9c896d6bc3dfef86659a6a1fb25ccdea5dbef6a3 Mon Sep 17 00:00:00 2001
+From: Eric Biggers <ebiggers@google.com>
+Date: Wed, 22 Nov 2023 19:08:38 -0800
+Subject: ceph: select FS_ENCRYPTION_ALGS if FS_ENCRYPTION
+
+From: Eric Biggers <ebiggers@google.com>
+
+commit 9c896d6bc3dfef86659a6a1fb25ccdea5dbef6a3 upstream.
+
+The kconfig options for filesystems that support FS_ENCRYPTION are
+supposed to select FS_ENCRYPTION_ALGS. This is needed to ensure that
+required crypto algorithms get enabled as loadable modules or builtin as
+is appropriate for the set of enabled filesystems. Do this for CEPH_FS
+so that there aren't any missing algorithms if someone happens to have
+CEPH_FS as their only enabled filesystem that supports encryption.
+
+Cc: stable@vger.kernel.org
+Fixes: f061feda6c54 ("ceph: add fscrypt ioctls and ceph.fscrypt.auth vxattr")
+Signed-off-by: Eric Biggers <ebiggers@google.com>
+Reviewed-by: Xiubo Li <xiubli@redhat.com>
+Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ fs/ceph/Kconfig | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/fs/ceph/Kconfig
++++ b/fs/ceph/Kconfig
+@@ -7,6 +7,7 @@ config CEPH_FS
+ select CRYPTO_AES
+ select CRYPTO
+ select NETFS_SUPPORT
++ select FS_ENCRYPTION_ALGS if FS_ENCRYPTION
+ default n
+ help
+ Choose Y or M here to include support for mounting the
--- /dev/null
+From 38d20c62903d669693a1869aa68c4dd5674e2544 Mon Sep 17 00:00:00 2001
+From: Namjae Jeon <linkinjeon@kernel.org>
+Date: Sat, 13 Jan 2024 15:30:07 +0900
+Subject: ksmbd: fix UAF issue in ksmbd_tcp_new_connection()
+
+From: Namjae Jeon <linkinjeon@kernel.org>
+
+commit 38d20c62903d669693a1869aa68c4dd5674e2544 upstream.
+
+The race is between the handling of a new TCP connection and
+its disconnection. It leads to UAF on `struct tcp_transport` in
+ksmbd_tcp_new_connection() function.
+
+Cc: stable@vger.kernel.org
+Reported-by: zdi-disclosures@trendmicro.com # ZDI-CAN-22991
+Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
+Signed-off-by: Steve French <stfrench@microsoft.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ fs/smb/server/connection.c | 6 ------
+ fs/smb/server/connection.h | 1 -
+ fs/smb/server/transport_rdma.c | 11 ++++++-----
+ fs/smb/server/transport_tcp.c | 13 +++++++------
+ 4 files changed, 13 insertions(+), 18 deletions(-)
+
+--- a/fs/smb/server/connection.c
++++ b/fs/smb/server/connection.c
+@@ -415,13 +415,7 @@ static void stop_sessions(void)
+ again:
+ down_read(&conn_list_lock);
+ list_for_each_entry(conn, &conn_list, conns_list) {
+- struct task_struct *task;
+-
+ t = conn->transport;
+- task = t->handler;
+- if (task)
+- ksmbd_debug(CONN, "Stop session handler %s/%d\n",
+- task->comm, task_pid_nr(task));
+ ksmbd_conn_set_exiting(conn);
+ if (t->ops->shutdown) {
+ up_read(&conn_list_lock);
+--- a/fs/smb/server/connection.h
++++ b/fs/smb/server/connection.h
+@@ -135,7 +135,6 @@ struct ksmbd_transport_ops {
+ struct ksmbd_transport {
+ struct ksmbd_conn *conn;
+ struct ksmbd_transport_ops *ops;
+- struct task_struct *handler;
+ };
+
+ #define KSMBD_TCP_RECV_TIMEOUT (7 * HZ)
+--- a/fs/smb/server/transport_rdma.c
++++ b/fs/smb/server/transport_rdma.c
+@@ -2039,6 +2039,7 @@ static bool rdma_frwr_is_supported(struc
+ static int smb_direct_handle_connect_request(struct rdma_cm_id *new_cm_id)
+ {
+ struct smb_direct_transport *t;
++ struct task_struct *handler;
+ int ret;
+
+ if (!rdma_frwr_is_supported(&new_cm_id->device->attrs)) {
+@@ -2056,11 +2057,11 @@ static int smb_direct_handle_connect_req
+ if (ret)
+ goto out_err;
+
+- KSMBD_TRANS(t)->handler = kthread_run(ksmbd_conn_handler_loop,
+- KSMBD_TRANS(t)->conn, "ksmbd:r%u",
+- smb_direct_port);
+- if (IS_ERR(KSMBD_TRANS(t)->handler)) {
+- ret = PTR_ERR(KSMBD_TRANS(t)->handler);
++ handler = kthread_run(ksmbd_conn_handler_loop,
++ KSMBD_TRANS(t)->conn, "ksmbd:r%u",
++ smb_direct_port);
++ if (IS_ERR(handler)) {
++ ret = PTR_ERR(handler);
+ pr_err("Can't start thread\n");
+ goto out_err;
+ }
+--- a/fs/smb/server/transport_tcp.c
++++ b/fs/smb/server/transport_tcp.c
+@@ -185,6 +185,7 @@ static int ksmbd_tcp_new_connection(stru
+ struct sockaddr *csin;
+ int rc = 0;
+ struct tcp_transport *t;
++ struct task_struct *handler;
+
+ t = alloc_transport(client_sk);
+ if (!t) {
+@@ -199,13 +200,13 @@ static int ksmbd_tcp_new_connection(stru
+ goto out_error;
+ }
+
+- KSMBD_TRANS(t)->handler = kthread_run(ksmbd_conn_handler_loop,
+- KSMBD_TRANS(t)->conn,
+- "ksmbd:%u",
+- ksmbd_tcp_get_port(csin));
+- if (IS_ERR(KSMBD_TRANS(t)->handler)) {
++ handler = kthread_run(ksmbd_conn_handler_loop,
++ KSMBD_TRANS(t)->conn,
++ "ksmbd:%u",
++ ksmbd_tcp_get_port(csin));
++ if (IS_ERR(handler)) {
+ pr_err("cannot start conn thread\n");
+- rc = PTR_ERR(KSMBD_TRANS(t)->handler);
++ rc = PTR_ERR(handler);
+ free_transport(t);
+ }
+ return rc;
--- /dev/null
+From 77bebd186442a7d703b796784db7495129cc3e70 Mon Sep 17 00:00:00 2001
+From: Namjae Jeon <linkinjeon@kernel.org>
+Date: Mon, 15 Jan 2024 10:24:54 +0900
+Subject: ksmbd: only v2 leases handle the directory
+
+From: Namjae Jeon <linkinjeon@kernel.org>
+
+commit 77bebd186442a7d703b796784db7495129cc3e70 upstream.
+
+When smb2 leases is disable, ksmbd can send oplock break notification
+and cause wait oplock break ack timeout. It may appear like hang when
+accessing a directory. This patch make only v2 leases handle the
+directory.
+
+Cc: stable@vger.kernel.org
+Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
+Signed-off-by: Steve French <stfrench@microsoft.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ fs/smb/server/oplock.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/fs/smb/server/oplock.c
++++ b/fs/smb/server/oplock.c
+@@ -1191,6 +1191,12 @@ int smb_grant_oplock(struct ksmbd_work *
+ bool prev_op_has_lease;
+ __le32 prev_op_state = 0;
+
++ /* Only v2 leases handle the directory */
++ if (S_ISDIR(file_inode(fp->filp)->i_mode)) {
++ if (!lctx || lctx->version != 2)
++ return 0;
++ }
++
+ opinfo = alloc_opinfo(work, pid, tid);
+ if (!opinfo)
+ return -ENOMEM;
--- /dev/null
+From 92e470163d96df8db6c4fa0f484e4a229edb903d Mon Sep 17 00:00:00 2001
+From: Namjae Jeon <linkinjeon@kernel.org>
+Date: Sat, 13 Jan 2024 15:11:41 +0900
+Subject: ksmbd: validate mech token in session setup
+
+From: Namjae Jeon <linkinjeon@kernel.org>
+
+commit 92e470163d96df8db6c4fa0f484e4a229edb903d upstream.
+
+If client send invalid mech token in session setup request, ksmbd
+validate and make the error if it is invalid.
+
+Cc: stable@vger.kernel.org
+Reported-by: zdi-disclosures@trendmicro.com # ZDI-CAN-22890
+Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
+Signed-off-by: Steve French <stfrench@microsoft.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ fs/smb/server/asn1.c | 5 +++++
+ fs/smb/server/connection.h | 1 +
+ fs/smb/server/smb2pdu.c | 22 +++++++++++++++++-----
+ 3 files changed, 23 insertions(+), 5 deletions(-)
+
+--- a/fs/smb/server/asn1.c
++++ b/fs/smb/server/asn1.c
+@@ -214,10 +214,15 @@ static int ksmbd_neg_token_alloc(void *c
+ {
+ struct ksmbd_conn *conn = context;
+
++ if (!vlen)
++ return -EINVAL;
++
+ conn->mechToken = kmemdup_nul(value, vlen, GFP_KERNEL);
+ if (!conn->mechToken)
+ return -ENOMEM;
+
++ conn->mechTokenLen = (unsigned int)vlen;
++
+ return 0;
+ }
+
+--- a/fs/smb/server/connection.h
++++ b/fs/smb/server/connection.h
+@@ -88,6 +88,7 @@ struct ksmbd_conn {
+ __u16 dialect;
+
+ char *mechToken;
++ unsigned int mechTokenLen;
+
+ struct ksmbd_conn_ops *conn_ops;
+
+--- a/fs/smb/server/smb2pdu.c
++++ b/fs/smb/server/smb2pdu.c
+@@ -1414,7 +1414,10 @@ static struct ksmbd_user *session_user(s
+ char *name;
+ unsigned int name_off, name_len, secbuf_len;
+
+- secbuf_len = le16_to_cpu(req->SecurityBufferLength);
++ if (conn->use_spnego && conn->mechToken)
++ secbuf_len = conn->mechTokenLen;
++ else
++ secbuf_len = le16_to_cpu(req->SecurityBufferLength);
+ if (secbuf_len < sizeof(struct authenticate_message)) {
+ ksmbd_debug(SMB, "blob len %d too small\n", secbuf_len);
+ return NULL;
+@@ -1505,7 +1508,10 @@ static int ntlm_authenticate(struct ksmb
+ struct authenticate_message *authblob;
+
+ authblob = user_authblob(conn, req);
+- sz = le16_to_cpu(req->SecurityBufferLength);
++ if (conn->use_spnego && conn->mechToken)
++ sz = conn->mechTokenLen;
++ else
++ sz = le16_to_cpu(req->SecurityBufferLength);
+ rc = ksmbd_decode_ntlmssp_auth_blob(authblob, sz, conn, sess);
+ if (rc) {
+ set_user_flag(sess->user, KSMBD_USER_FLAG_BAD_PASSWORD);
+@@ -1778,8 +1784,7 @@ int smb2_sess_setup(struct ksmbd_work *w
+
+ negblob_off = le16_to_cpu(req->SecurityBufferOffset);
+ negblob_len = le16_to_cpu(req->SecurityBufferLength);
+- if (negblob_off < offsetof(struct smb2_sess_setup_req, Buffer) ||
+- negblob_len < offsetof(struct negotiate_message, NegotiateFlags)) {
++ if (negblob_off < offsetof(struct smb2_sess_setup_req, Buffer)) {
+ rc = -EINVAL;
+ goto out_err;
+ }
+@@ -1788,8 +1793,15 @@ int smb2_sess_setup(struct ksmbd_work *w
+ negblob_off);
+
+ if (decode_negotiation_token(conn, negblob, negblob_len) == 0) {
+- if (conn->mechToken)
++ if (conn->mechToken) {
+ negblob = (struct negotiate_message *)conn->mechToken;
++ negblob_len = conn->mechTokenLen;
++ }
++ }
++
++ if (negblob_len < offsetof(struct negotiate_message, NegotiateFlags)) {
++ rc = -EINVAL;
++ goto out_err;
+ }
+
+ if (server_conf.auth_mechs & conn->auth_mechs) {
--- /dev/null
+From c2396651309eba291c15e32db8fbe44c738b5921 Mon Sep 17 00:00:00 2001
+From: Xi Ruoyao <xry111@xry111.site>
+Date: Wed, 17 Jan 2024 12:43:08 +0800
+Subject: LoongArch: Fix and simplify fcsr initialization on execve()
+
+From: Xi Ruoyao <xry111@xry111.site>
+
+commit c2396651309eba291c15e32db8fbe44c738b5921 upstream.
+
+There has been a lingering bug in LoongArch Linux systems causing some
+GCC tests to intermittently fail (see Closes link). I've made a minimal
+reproducer:
+
+ zsh% cat measure.s
+ .align 4
+ .globl _start
+ _start:
+ movfcsr2gr $a0, $fcsr0
+ bstrpick.w $a0, $a0, 16, 16
+ beqz $a0, .ok
+ break 0
+ .ok:
+ li.w $a7, 93
+ syscall 0
+ zsh% cc mesaure.s -o measure -nostdlib
+ zsh% echo $((1.0/3))
+ 0.33333333333333331
+ zsh% while ./measure; do ; done
+
+This while loop should not stop as POSIX is clear that execve must set
+fenv to the default, where FCSR should be zero. But in fact it will
+just stop after running for a while (normally less than 30 seconds).
+Note that "$((1.0/3))" is needed to reproduce this issue because it
+raises FE_INVALID and makes fcsr0 non-zero.
+
+The problem is we are currently relying on SET_PERSONALITY2() to reset
+current->thread.fpu.fcsr. But SET_PERSONALITY2() is executed before
+start_thread which calls lose_fpu(0). We can see if kernel preempt is
+enabled, we may switch to another thread after SET_PERSONALITY2() but
+before lose_fpu(0). Then bad thing happens: during the thread switch
+the value of the fcsr0 register is stored into current->thread.fpu.fcsr,
+making it dirty again.
+
+The issue can be fixed by setting current->thread.fpu.fcsr after
+lose_fpu(0) because lose_fpu() clears TIF_USEDFPU, then the thread
+switch won't touch current->thread.fpu.fcsr.
+
+The only other architecture setting FCSR in SET_PERSONALITY2() is MIPS.
+I've ran a similar test on MIPS with mainline kernel and it turns out
+MIPS is buggy, too. Anyway MIPS do this for supporting different FP
+flavors (NaN encodings, etc.) which do not exist on LoongArch. So for
+LoongArch, we can simply remove the current->thread.fpu.fcsr setting
+from SET_PERSONALITY2() and do it in start_thread(), after lose_fpu(0).
+
+The while loop failing with the mainline kernel has survived one hour
+after this change on LoongArch.
+
+Fixes: 803b0fc5c3f2baa ("LoongArch: Add process management")
+Closes: https://github.com/loongson-community/discussions/issues/7
+Link: https://lore.kernel.org/linux-mips/7a6aa1bbdbbe2e63ae96ff163fab0349f58f1b9e.camel@xry111.site/
+Cc: stable@vger.kernel.org
+Signed-off-by: Xi Ruoyao <xry111@xry111.site>
+Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ arch/loongarch/include/asm/elf.h | 5 -----
+ arch/loongarch/kernel/elf.c | 5 -----
+ arch/loongarch/kernel/process.c | 1 +
+ 3 files changed, 1 insertion(+), 10 deletions(-)
+
+--- a/arch/loongarch/include/asm/elf.h
++++ b/arch/loongarch/include/asm/elf.h
+@@ -241,8 +241,6 @@ void loongarch_dump_regs64(u64 *uregs, c
+ do { \
+ current->thread.vdso = &vdso_info; \
+ \
+- loongarch_set_personality_fcsr(state); \
+- \
+ if (personality(current->personality) != PER_LINUX) \
+ set_personality(PER_LINUX); \
+ } while (0)
+@@ -259,7 +257,6 @@ do { \
+ clear_thread_flag(TIF_32BIT_ADDR); \
+ \
+ current->thread.vdso = &vdso_info; \
+- loongarch_set_personality_fcsr(state); \
+ \
+ p = personality(current->personality); \
+ if (p != PER_LINUX32 && p != PER_LINUX) \
+@@ -340,6 +337,4 @@ extern int arch_elf_pt_proc(void *ehdr,
+ extern int arch_check_elf(void *ehdr, bool has_interpreter, void *interp_ehdr,
+ struct arch_elf_state *state);
+
+-extern void loongarch_set_personality_fcsr(struct arch_elf_state *state);
+-
+ #endif /* _ASM_ELF_H */
+--- a/arch/loongarch/kernel/elf.c
++++ b/arch/loongarch/kernel/elf.c
+@@ -23,8 +23,3 @@ int arch_check_elf(void *_ehdr, bool has
+ {
+ return 0;
+ }
+-
+-void loongarch_set_personality_fcsr(struct arch_elf_state *state)
+-{
+- current->thread.fpu.fcsr = boot_cpu_data.fpu_csr0;
+-}
+--- a/arch/loongarch/kernel/process.c
++++ b/arch/loongarch/kernel/process.c
+@@ -85,6 +85,7 @@ void start_thread(struct pt_regs *regs,
+ regs->csr_euen = euen;
+ lose_fpu(0);
+ lose_lbt(0);
++ current->thread.fpu.fcsr = boot_cpu_data.fpu_csr0;
+
+ clear_thread_flag(TIF_LSX_CTX_LIVE);
+ clear_thread_flag(TIF_LASX_CTX_LIVE);
serial-imx-ensure-that-imx_uart_rs485_config-is-called-with-enabled-clock.patch
serial-8250_exar-set-missing-rs485_supported-flag.patch
serial-omap-do-not-override-settings-for-rs485-support.patch
+alsa-oxygen-fix-right-channel-of-capture-volume-mixer.patch
+alsa-hda-relatek-enable-mute-led-on-hp-laptop-15s-fq2xxx.patch
+alsa-hda-realtek-enable-mute-micmute-leds-and-limit-mic-boost-on-hp-zbook.patch
+alsa-hda-realtek-enable-headset-mic-on-lenovo-m70-gen5.patch
+ksmbd-validate-mech-token-in-session-setup.patch
+ksmbd-fix-uaf-issue-in-ksmbd_tcp_new_connection.patch
+ksmbd-only-v2-leases-handle-the-directory.patch
+ceph-select-fs_encryption_algs-if-fs_encryption.patch
+loongarch-fix-and-simplify-fcsr-initialization-on-execve.patch
projects / thirdparty / kernel / stable-queue.git / commitdiff
