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[PATCH openEuler-22.03-LTS-SP1] thunderbolt: Mark XDomain as unplugged when router is removed
by Zhang Zekun 07 Nov '24

07 Nov '24

From: Mika Westerberg <mika.westerberg(a)linux.intel.com> stable inclusion from stable-v5.10.225 commit 747bc154577de6e6af4bc99abfa859b8419bb4d8 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAR5FZ CVE: CVE-2024-46702 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… --------------------------------------------------------------- commit e2006140ad2e01a02ed0aff49cc2ae3ceeb11f8d upstream. I noticed that when we do discrete host router NVM upgrade and it gets hot-removed from the PCIe side as a result of NVM firmware authentication, if there is another host connected with enabled paths we hang in tearing them down. This is due to fact that the Thunderbolt networking driver also tries to cleanup the paths and ends up blocking in tb_disconnect_xdomain_paths() waiting for the domain lock. However, at this point we already cleaned the paths in tb_stop() so there is really no need for tb_disconnect_xdomain_paths() to do that anymore. Furthermore it already checks if the XDomain is unplugged and bails out early so take advantage of that and mark the XDomain as unplugged when we remove the parent router. Cc: stable(a)vger.kernel.org Signed-off-by: Mika Westerberg <mika.westerberg(a)linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Zhang Zekun <zhangzekun11(a)huawei.com> --- drivers/thunderbolt/switch.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index b13a944eb462..f6580d11c0fe 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -2584,6 +2584,7 @@ void tb_switch_remove(struct tb_switch *sw) tb_switch_remove(port->remote->sw); port->remote = NULL; } else if (port->xdomain) { + port->xdomain->is_unplugged = true; tb_xdomain_remove(port->xdomain); port->xdomain = NULL; } -- 2.17.1

2 1

[PATCH OLK-5.10] thunderbolt: Mark XDomain as unplugged when router is removed
by Zhang Zekun 07 Nov '24

07 Nov '24

From: Mika Westerberg <mika.westerberg(a)linux.intel.com> stable inclusion from stable-v5.10.225 commit 747bc154577de6e6af4bc99abfa859b8419bb4d8 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAR5FZ CVE: CVE-2024-46702 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… --------------------------------------------------------------- commit e2006140ad2e01a02ed0aff49cc2ae3ceeb11f8d upstream. I noticed that when we do discrete host router NVM upgrade and it gets hot-removed from the PCIe side as a result of NVM firmware authentication, if there is another host connected with enabled paths we hang in tearing them down. This is due to fact that the Thunderbolt networking driver also tries to cleanup the paths and ends up blocking in tb_disconnect_xdomain_paths() waiting for the domain lock. However, at this point we already cleaned the paths in tb_stop() so there is really no need for tb_disconnect_xdomain_paths() to do that anymore. Furthermore it already checks if the XDomain is unplugged and bails out early so take advantage of that and mark the XDomain as unplugged when we remove the parent router. Cc: stable(a)vger.kernel.org Signed-off-by: Mika Westerberg <mika.westerberg(a)linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Zhang Zekun <zhangzekun11(a)huawei.com> --- drivers/thunderbolt/switch.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index b13a944eb462..f6580d11c0fe 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -2584,6 +2584,7 @@ void tb_switch_remove(struct tb_switch *sw) tb_switch_remove(port->remote->sw); port->remote = NULL; } else if (port->xdomain) { + port->xdomain->is_unplugged = true; tb_xdomain_remove(port->xdomain); port->xdomain = NULL; } -- 2.17.1

2 1

[PATCH openEuler-22.03-LTS-SP1] pinctrl: single: fix potential NULL dereference in pcs_get_function()
by Zhang Zekun 07 Nov '24

07 Nov '24

From: Ma Ke <make24(a)iscas.ac.cn> stable inclusion from stable-v5.10.225 commit 4e9436375fcc9bd2a60ee96aba6ed53f7a377d10 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAR49K CVE: CVE-2024-46685 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… ----------------------------------------------------------------- commit 1c38a62f15e595346a1106025722869e87ffe044 upstream. pinmux_generic_get_function() can return NULL and the pointer 'function' was dereferenced without checking against NULL. Add checking of pointer 'function' in pcs_get_function(). Found by code review. Cc: stable(a)vger.kernel.org Fixes: 571aec4df5b7 ("pinctrl: single: Use generic pinmux helpers for managing functions") Signed-off-by: Ma Ke <make24(a)iscas.ac.cn> Link: https://lore.kernel.org/20240808041355.2766009-1-make24@iscas.ac.cn Signed-off-by: Linus Walleij <linus.walleij(a)linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Zhang Zekun <zhangzekun11(a)huawei.com> --- drivers/pinctrl/pinctrl-single.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c index 22e471933b37..b5fd3889c110 100644 --- a/drivers/pinctrl/pinctrl-single.c +++ b/drivers/pinctrl/pinctrl-single.c @@ -350,6 +350,8 @@ static int pcs_get_function(struct pinctrl_dev *pctldev, unsigned pin, return -ENOTSUPP; fselector = setting->func; function = pinmux_generic_get_function(pctldev, fselector); + if (!function) + return -EINVAL; *func = function->data; if (!(*func)) { dev_err(pcs->dev, "%s could not find function%i\n", -- 2.17.1

2 1

[PATCH OLK-5.10] pinctrl: single: fix potential NULL dereference in pcs_get_function()
by Zhang Zekun 07 Nov '24

07 Nov '24

From: Ma Ke <make24(a)iscas.ac.cn> stable inclusion from stable-v5.10.225 commit 4e9436375fcc9bd2a60ee96aba6ed53f7a377d10 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAR49K CVE: CVE-2024-46685 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… ----------------------------------------------------------------- commit 1c38a62f15e595346a1106025722869e87ffe044 upstream. pinmux_generic_get_function() can return NULL and the pointer 'function' was dereferenced without checking against NULL. Add checking of pointer 'function' in pcs_get_function(). Found by code review. Cc: stable(a)vger.kernel.org Fixes: 571aec4df5b7 ("pinctrl: single: Use generic pinmux helpers for managing functions") Signed-off-by: Ma Ke <make24(a)iscas.ac.cn> Link: https://lore.kernel.org/20240808041355.2766009-1-make24@iscas.ac.cn Signed-off-by: Linus Walleij <linus.walleij(a)linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Zhang Zekun <zhangzekun11(a)huawei.com> --- drivers/pinctrl/pinctrl-single.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c index 22e471933b37..b5fd3889c110 100644 --- a/drivers/pinctrl/pinctrl-single.c +++ b/drivers/pinctrl/pinctrl-single.c @@ -350,6 +350,8 @@ static int pcs_get_function(struct pinctrl_dev *pctldev, unsigned pin, return -ENOTSUPP; fselector = setting->func; function = pinmux_generic_get_function(pctldev, fselector); + if (!function) + return -EINVAL; *func = function->data; if (!(*func)) { dev_err(pcs->dev, "%s could not find function%i\n", -- 2.17.1

2 1

[PATCH OLK-6.6] ksmbd: fix user-after-free from session log off
by Long Li 07 Nov '24

07 Nov '24

From: Namjae Jeon <linkinjeon(a)kernel.org> stable inclusion from stable-v6.6.57 commit 5511999e9615e4318e9142d23b29bd1597befc08 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IB0ENJ CVE: CVE-2024-50086 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=… -------------------------------- commit 7aa8804c0b67b3cb263a472d17f2cb50d7f1a930 upstream. There is racy issue between smb2 session log off and smb2 session setup. It will cause user-after-free from session log off. This add session_lock when setting SMB2_SESSION_EXPIRED and referece count to session struct not to free session while it is being used. Cc: stable(a)vger.kernel.org # v5.15+ Reported-by: zdi-disclosures(a)trendmicro.com # ZDI-CAN-25282 Signed-off-by: Namjae Jeon <linkinjeon(a)kernel.org> Signed-off-by: Steve French <stfrench(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Long Li <leo.lilong(a)huawei.com> --- fs/smb/server/mgmt/user_session.c | 26 +++++++++++++++++++++----- fs/smb/server/mgmt/user_session.h | 4 ++++ fs/smb/server/server.c | 2 ++ fs/smb/server/smb2pdu.c | 8 +++++++- 4 files changed, 34 insertions(+), 6 deletions(-) diff --git a/fs/smb/server/mgmt/user_session.c b/fs/smb/server/mgmt/user_session.c index dac5f984f175..9f40b9c473ba 100644 --- a/fs/smb/server/mgmt/user_session.c +++ b/fs/smb/server/mgmt/user_session.c @@ -176,9 +176,10 @@ static void ksmbd_expire_session(struct ksmbd_conn *conn) down_write(&conn->session_lock); xa_for_each(&conn->sessions, id, sess) { - if (sess->state != SMB2_SESSION_VALID || - time_after(jiffies, - sess->last_active + SMB2_SESSION_TIMEOUT)) { + if (atomic_read(&sess->refcnt) == 0 && + (sess->state != SMB2_SESSION_VALID || + time_after(jiffies, + sess->last_active + SMB2_SESSION_TIMEOUT))) { xa_erase(&conn->sessions, sess->id); hash_del(&sess->hlist); ksmbd_session_destroy(sess); @@ -268,8 +269,6 @@ struct ksmbd_session *ksmbd_session_lookup_slowpath(unsigned long long id) down_read(&sessions_table_lock); sess = __session_lookup(id); - if (sess) - sess->last_active = jiffies; up_read(&sessions_table_lock); return sess; @@ -288,6 +287,22 @@ struct ksmbd_session *ksmbd_session_lookup_all(struct ksmbd_conn *conn, return sess; } +void ksmbd_user_session_get(struct ksmbd_session *sess) +{ + atomic_inc(&sess->refcnt); +} + +void ksmbd_user_session_put(struct ksmbd_session *sess) +{ + if (!sess) + return; + + if (atomic_read(&sess->refcnt) <= 0) + WARN_ON(1); + else + atomic_dec(&sess->refcnt); +} + struct preauth_session *ksmbd_preauth_session_alloc(struct ksmbd_conn *conn, u64 sess_id) { @@ -390,6 +405,7 @@ static struct ksmbd_session *__session_create(int protocol) xa_init(&sess->rpc_handle_list); sess->sequence_number = 1; rwlock_init(&sess->tree_conns_lock); + atomic_set(&sess->refcnt, 1); ret = __init_smb2_session(sess); if (ret) diff --git a/fs/smb/server/mgmt/user_session.h b/fs/smb/server/mgmt/user_session.h index dc9fded2cd43..c1c4b20bd5c6 100644 --- a/fs/smb/server/mgmt/user_session.h +++ b/fs/smb/server/mgmt/user_session.h @@ -61,6 +61,8 @@ struct ksmbd_session { struct ksmbd_file_table file_table; unsigned long last_active; rwlock_t tree_conns_lock; + + atomic_t refcnt; }; static inline int test_session_flag(struct ksmbd_session *sess, int bit) @@ -104,4 +106,6 @@ void ksmbd_release_tree_conn_id(struct ksmbd_session *sess, int id); int ksmbd_session_rpc_open(struct ksmbd_session *sess, char *rpc_name); void ksmbd_session_rpc_close(struct ksmbd_session *sess, int id); int ksmbd_session_rpc_method(struct ksmbd_session *sess, int id); +void ksmbd_user_session_get(struct ksmbd_session *sess); +void ksmbd_user_session_put(struct ksmbd_session *sess); #endif /* __USER_SESSION_MANAGEMENT_H__ */ diff --git a/fs/smb/server/server.c b/fs/smb/server/server.c index 2bbc3c3316f0..d5d85300560d 100644 --- a/fs/smb/server/server.c +++ b/fs/smb/server/server.c @@ -238,6 +238,8 @@ static void __handle_ksmbd_work(struct ksmbd_work *work, } while (is_chained == true); send: + if (work->sess) + ksmbd_user_session_put(work->sess); if (work->tcon) ksmbd_tree_connect_put(work->tcon); smb3_preauth_hash_rsp(work); diff --git a/fs/smb/server/smb2pdu.c b/fs/smb/server/smb2pdu.c index c247ec2c7e22..a080f80256cb 100644 --- a/fs/smb/server/smb2pdu.c +++ b/fs/smb/server/smb2pdu.c @@ -605,8 +605,10 @@ int smb2_check_user_session(struct ksmbd_work *work) /* Check for validity of user session */ work->sess = ksmbd_session_lookup_all(conn, sess_id); - if (work->sess) + if (work->sess) { + ksmbd_user_session_get(work->sess); return 1; + } ksmbd_debug(SMB, "Invalid user session, Uid %llu\n", sess_id); return -ENOENT; } @@ -1737,6 +1739,7 @@ int smb2_sess_setup(struct ksmbd_work *work) } conn->binding = true; + ksmbd_user_session_get(sess); } else if ((conn->dialect < SMB30_PROT_ID || server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL) && (req->Flags & SMB2_SESSION_REQ_FLAG_BINDING)) { @@ -1763,6 +1766,7 @@ int smb2_sess_setup(struct ksmbd_work *work) } conn->binding = false; + ksmbd_user_session_get(sess); } work->sess = sess; @@ -2223,7 +2227,9 @@ int smb2_session_logoff(struct ksmbd_work *work) } ksmbd_destroy_file_table(&sess->file_table); + down_write(&conn->session_lock); sess->state = SMB2_SESSION_EXPIRED; + up_write(&conn->session_lock); ksmbd_free_user(sess->user); sess->user = NULL; -- 2.39.2

2 1

[PATCH OLK-5.10] RDMA/hns: Fix DCA mmap area PUAF
by Chengchang Tang 07 Nov '24

07 Nov '24

driver inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IB2DWH ---------------------------------------------------------------------- DCA mmap area would be freed after driver reseted or hot unplugged. At this time, the vma is still valid, which may lead to a PUAF. Using rdma_user_mmap_io() to remap this area to ensure the vma is zapped after dirver removal. Fixes: d3caaebdbfe9 ("RDMA/hns: Optimize user DCA perfermance by sharing DCA status") Signed-off-by: Chengchang Tang <tangchengchang(a)huawei.com> Signed-off-by: Xinghai Cen <cenxinghai(a)h-partners.com> --- drivers/infiniband/hw/hns/hns_roce_dca.c | 3 +- drivers/infiniband/hw/hns/hns_roce_main.c | 39 ++++------------------- 2 files changed, 9 insertions(+), 33 deletions(-) diff --git a/drivers/infiniband/hw/hns/hns_roce_dca.c b/drivers/infiniband/hw/hns/hns_roce_dca.c index 91b6b65c83df..65ed7666a826 100644 --- a/drivers/infiniband/hw/hns/hns_roce_dca.c +++ b/drivers/infiniband/hw/hns/hns_roce_dca.c @@ -1181,7 +1181,8 @@ static void init_udca_status(struct hns_roce_ucontext *uctx, int udca_max_qps, return; ctx->dca_mmap_entry = hns_roce_user_mmap_entry_insert(ib_uctx, - (u64)kaddr, size, HNS_ROCE_MMAP_TYPE_DCA); + (u64)virt_to_phys(kaddr), size, + HNS_ROCE_MMAP_TYPE_DCA); if (!ctx->dca_mmap_entry) { free_pages_exact(kaddr, size); return; diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c index 27b723a40abe..3872e777c74b 100644 --- a/drivers/infiniband/hw/hns/hns_roce_main.c +++ b/drivers/infiniband/hw/hns/hns_roce_main.c @@ -674,36 +674,6 @@ static void hns_roce_dealloc_ucontext(struct ib_ucontext *ibcontext) ida_free(&hr_dev->uar_ida.ida, (int)context->uar.logic_idx); } -static int mmap_dca(struct ib_ucontext *context, struct vm_area_struct *vma) -{ - struct hns_roce_ucontext *uctx = to_hr_ucontext(context); - struct hns_roce_dca_ctx *ctx = &uctx->dca_ctx; - struct page **pages; - unsigned long num; - int ret; - - if ((vma->vm_end - vma->vm_start != (ctx->status_npage * PAGE_SIZE) || - !(vma->vm_flags & VM_SHARED))) - return -EINVAL; - - if (!(vma->vm_flags & VM_WRITE) || (vma->vm_flags & VM_EXEC)) - return -EPERM; - - if (!ctx->buf_status) - return -EOPNOTSUPP; - - pages = kcalloc(ctx->status_npage, sizeof(struct page *), GFP_KERNEL); - if (!pages) - return -ENOMEM; - - for (num = 0; num < ctx->status_npage; num++) - pages[num] = virt_to_page(ctx->buf_status + num * PAGE_SIZE); - - ret = vm_insert_pages(vma, vma->vm_start, pages, &num); - kfree(pages); - return ret; -} - static int hns_roce_mmap(struct ib_ucontext *uctx, struct vm_area_struct *vma) { struct hns_roce_dev *hr_dev = to_hr_dev(uctx->device); @@ -728,8 +698,13 @@ static int hns_roce_mmap(struct ib_ucontext *uctx, struct vm_area_struct *vma) prot = pgprot_device(vma->vm_page_prot); break; case HNS_ROCE_MMAP_TYPE_DCA: - ret = mmap_dca(uctx, vma); - goto out; + if (!(vma->vm_flags & VM_WRITE) || (vma->vm_flags & VM_EXEC)) { + ret = -EPERM; + goto out; + } + vma->vm_flags |= VM_DONTEXPAND; + prot = vma->vm_page_prot; + break; case HNS_ROCE_MMAP_TYPE_RESET: if (vma->vm_flags & (VM_WRITE | VM_EXEC)) { ret = -EINVAL; -- 2.33.0

2 1

[PATCH OLK-6.6] RDMA/hns: Fix DCA mmap area PUAF
by Chengchang Tang 07 Nov '24

07 Nov '24

driver inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IB2H4P ---------------------------------------------------------------------- DCA mmap area would be freed after driver reseted or hot unplugged. At this time, the vma is still valid, which may lead to a PUAF. Using rdma_user_mmap_io() to remap this area to ensure the vma is zapped after dirver removal. Fixes: d3caaebdbfe9 ("RDMA/hns: Optimize user DCA perfermance by sharing DCA status") Signed-off-by: Chengchang Tang <tangchengchang(a)huawei.com> Signed-off-by: Xinghai Cen <cenxinghai(a)h-partners.com> --- drivers/infiniband/hw/hns/hns_roce_dca.c | 3 +- drivers/infiniband/hw/hns/hns_roce_main.c | 39 ++++------------------- 2 files changed, 9 insertions(+), 33 deletions(-) diff --git a/drivers/infiniband/hw/hns/hns_roce_dca.c b/drivers/infiniband/hw/hns/hns_roce_dca.c index 49adf43261d6..4cef41591795 100644 --- a/drivers/infiniband/hw/hns/hns_roce_dca.c +++ b/drivers/infiniband/hw/hns/hns_roce_dca.c @@ -1132,7 +1132,8 @@ static void init_udca_status(struct hns_roce_ucontext *uctx, int udca_max_qps, return; ctx->dca_mmap_entry = hns_roce_user_mmap_entry_insert(ib_uctx, - (u64)kaddr, size, HNS_ROCE_MMAP_TYPE_DCA); + (u64)virt_to_phys(kaddr), size, + HNS_ROCE_MMAP_TYPE_DCA); if (!ctx->dca_mmap_entry) { free_pages_exact(kaddr, size); return; diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c index 1302c58c3937..85223d25995d 100644 --- a/drivers/infiniband/hw/hns/hns_roce_main.c +++ b/drivers/infiniband/hw/hns/hns_roce_main.c @@ -644,36 +644,6 @@ static void hns_roce_dealloc_ucontext(struct ib_ucontext *ibcontext) ida_free(&hr_dev->uar_ida.ida, (int)context->uar.logic_idx); } -static int mmap_dca(struct ib_ucontext *context, struct vm_area_struct *vma) -{ - struct hns_roce_ucontext *uctx = to_hr_ucontext(context); - struct hns_roce_dca_ctx *ctx = &uctx->dca_ctx; - struct page **pages; - unsigned long num; - int ret; - - if ((vma->vm_end - vma->vm_start != (ctx->status_npage * PAGE_SIZE) || - !(vma->vm_flags & VM_SHARED))) - return -EINVAL; - - if (!(vma->vm_flags & VM_WRITE) || (vma->vm_flags & VM_EXEC)) - return -EPERM; - - if (!ctx->buf_status) - return -EOPNOTSUPP; - - pages = kcalloc(ctx->status_npage, sizeof(struct page *), GFP_KERNEL); - if (!pages) - return -ENOMEM; - - for (num = 0; num < ctx->status_npage; num++) - pages[num] = virt_to_page(ctx->buf_status + num * PAGE_SIZE); - - ret = vm_insert_pages(vma, vma->vm_start, pages, &num); - kfree(pages); - return ret; -} - static int hns_roce_mmap(struct ib_ucontext *uctx, struct vm_area_struct *vma) { struct hns_roce_dev *hr_dev = to_hr_dev(uctx->device); @@ -703,8 +673,13 @@ static int hns_roce_mmap(struct ib_ucontext *uctx, struct vm_area_struct *vma) prot = pgprot_device(vma->vm_page_prot); break; case HNS_ROCE_MMAP_TYPE_DCA: - ret = mmap_dca(uctx, vma); - goto out; + if (!(vma->vm_flags & VM_WRITE) || (vma->vm_flags & VM_EXEC)) { + ret = -EPERM; + goto out; + } + vma->vm_flags |= VM_DONTEXPAND; + prot = vma->vm_page_prot; + break; case HNS_ROCE_MMAP_TYPE_RESET: if (vma->vm_flags & (VM_WRITE | VM_EXEC)) { ret = -EINVAL; -- 2.33.0

2 1

[PATCH OLK-6.6] rcu-tasks: Fix access non-existent percpu rtpcp variable in rcu_tasks_need_gpcb()
by liwei 07 Nov '24

07 Nov '24

From: Zqiang <qiang.zhang1211(a)gmail.com> mainline inclusion from mainline-v6.12-rc1 commit fd70e9f1d85f5323096ad313ba73f5fe3d15ea41 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAYR9E CVE: CVE-2024-49926 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- For kernels built with CONFIG_FORCE_NR_CPUS=y, the nr_cpu_ids is defined as NR_CPUS instead of the number of possible cpus, this will cause the following system panic: smpboot: Allowing 4 CPUs, 0 hotplug CPUs ... setup_percpu: NR_CPUS:512 nr_cpumask_bits:512 nr_cpu_ids:512 nr_node_ids:1 ... BUG: unable to handle page fault for address: ffffffff9911c8c8 Oops: 0000 [#1] PREEMPT SMP PTI CPU: 0 PID: 15 Comm: rcu_tasks_trace Tainted: G W 6.6.21 #1 5dc7acf91a5e8e9ac9dcfc35bee0245691283ea6 RIP: 0010:rcu_tasks_need_gpcb+0x25d/0x2c0 RSP: 0018:ffffa371c00a3e60 EFLAGS: 00010082 CR2: ffffffff9911c8c8 CR3: 000000040fa20005 CR4: 00000000001706f0 Call Trace: <TASK> ? __die+0x23/0x80 ? page_fault_oops+0xa4/0x180 ? exc_page_fault+0x152/0x180 ? asm_exc_page_fault+0x26/0x40 ? rcu_tasks_need_gpcb+0x25d/0x2c0 ? __pfx_rcu_tasks_kthread+0x40/0x40 rcu_tasks_one_gp+0x69/0x180 rcu_tasks_kthread+0x94/0xc0 kthread+0xe8/0x140 ? __pfx_kthread+0x40/0x40 ret_from_fork+0x34/0x80 ? __pfx_kthread+0x40/0x40 ret_from_fork_asm+0x1b/0x80 </TASK> Considering that there may be holes in the CPU numbers, use the maximum possible cpu number, instead of nr_cpu_ids, for configuring enqueue and dequeue limits. [ neeraj.upadhyay: Fix htmldocs build error reported by Stephen Rothwell ] Closes: https://lore.kernel.org/linux-input/CALMA0xaTSMN+p4xUXkzrtR5r6k7hgoswcaXx7b… Reported-by: Zhixu Liu <zhixu.liu(a)gmail.com> Signed-off-by: Zqiang <qiang.zhang1211(a)gmail.com> Signed-off-by: Neeraj Upadhyay <neeraj.upadhyay(a)kernel.org> Conflicts: kernel/rcu/tasks.h [commit bfe93930ea1ea3c6c115a7d44af6e4fea609067e("rcu-tasks: Add data to eliminate RCU-tasks/do_exit() deadlocks") was not merged] [commit e62d8ae4620865411d1b2347980aa28ccf891a3d("rcu-tasks: Pull sampling of ->percpu_dequeue_lim out of loop") was not merged] Signed-off-by: liwei <liwei728(a)huawei.com> --- kernel/rcu/tasks.h | 83 ++++++++++++++++++++++++++++++---------------- 1 file changed, 54 insertions(+), 29 deletions(-) diff --git a/kernel/rcu/tasks.h b/kernel/rcu/tasks.h index df81506cf2bd..fbfa0f90f884 100644 --- a/kernel/rcu/tasks.h +++ b/kernel/rcu/tasks.h @@ -33,6 +33,7 @@ typedef void (*postgp_func_t)(struct rcu_tasks *rtp); * @barrier_q_head: RCU callback for barrier operation. * @rtp_blkd_tasks: List of tasks blocked as readers. * @cpu: CPU number corresponding to this entry. + * @index: Index of this CPU in rtpcp_array of the rcu_tasks structure. * @rtpp: Pointer to the rcu_tasks structure. */ struct rcu_tasks_percpu { @@ -47,6 +48,7 @@ struct rcu_tasks_percpu { struct rcu_head barrier_q_head; struct list_head rtp_blkd_tasks; int cpu; + int index; struct rcu_tasks *rtpp; }; @@ -73,6 +75,7 @@ struct rcu_tasks_percpu { * @postgp_func: This flavor's post-grace-period function (optional). * @call_func: This flavor's call_rcu()-equivalent function. * @rtpcpu: This flavor's rcu_tasks_percpu structure. + * @rtpcp_array: Array of pointers to rcu_tasks_percpu structure of CPUs in cpu_possible_mask. * @percpu_enqueue_shift: Shift down CPU ID this much when enqueuing callbacks. * @percpu_enqueue_lim: Number of per-CPU callback queues in use for enqueuing. * @percpu_dequeue_lim: Number of per-CPU callback queues in use for dequeuing. @@ -106,6 +109,7 @@ struct rcu_tasks { postgp_func_t postgp_func; call_rcu_func_t call_func; struct rcu_tasks_percpu __percpu *rtpcpu; + struct rcu_tasks_percpu **rtpcp_array; int percpu_enqueue_shift; int percpu_enqueue_lim; int percpu_dequeue_lim; @@ -179,6 +183,8 @@ module_param(rcu_task_collapse_lim, int, 0444); static int rcu_task_lazy_lim __read_mostly = 32; module_param(rcu_task_lazy_lim, int, 0444); +static int rcu_task_cpu_ids; + /* RCU tasks grace-period state for debugging. */ #define RTGS_INIT 0 #define RTGS_WAIT_WAIT_CBS 1 @@ -243,6 +249,8 @@ static void cblist_init_generic(struct rcu_tasks *rtp) unsigned long flags; int lim; int shift; + int maxcpu; + int index = 0; if (rcu_task_enqueue_lim < 0) { rcu_task_enqueue_lim = 1; @@ -252,14 +260,9 @@ static void cblist_init_generic(struct rcu_tasks *rtp) } lim = rcu_task_enqueue_lim; - if (lim > nr_cpu_ids) - lim = nr_cpu_ids; - shift = ilog2(nr_cpu_ids / lim); - if (((nr_cpu_ids - 1) >> shift) >= lim) - shift++; - WRITE_ONCE(rtp->percpu_enqueue_shift, shift); - WRITE_ONCE(rtp->percpu_dequeue_lim, lim); - smp_store_release(&rtp->percpu_enqueue_lim, lim); + rtp->rtpcp_array = kcalloc(num_possible_cpus(), sizeof(struct rcu_tasks_percpu *), GFP_KERNEL); + BUG_ON(!rtp->rtpcp_array); + for_each_possible_cpu(cpu) { struct rcu_tasks_percpu *rtpcp = per_cpu_ptr(rtp->rtpcpu, cpu); @@ -273,12 +276,28 @@ static void cblist_init_generic(struct rcu_tasks *rtp) INIT_WORK(&rtpcp->rtp_work, rcu_tasks_invoke_cbs_wq); rtpcp->cpu = cpu; rtpcp->rtpp = rtp; + rtpcp->index = index; + rtp->rtpcp_array[index] = rtpcp; + index++; if (!rtpcp->rtp_blkd_tasks.next) INIT_LIST_HEAD(&rtpcp->rtp_blkd_tasks); + + maxcpu = cpu; } - pr_info("%s: Setting shift to %d and lim to %d rcu_task_cb_adjust=%d.\n", rtp->name, - data_race(rtp->percpu_enqueue_shift), data_race(rtp->percpu_enqueue_lim), rcu_task_cb_adjust); + rcu_task_cpu_ids = maxcpu + 1; + if (lim > rcu_task_cpu_ids) + lim = rcu_task_cpu_ids; + shift = ilog2(rcu_task_cpu_ids / lim); + if (((rcu_task_cpu_ids - 1) >> shift) >= lim) + shift++; + WRITE_ONCE(rtp->percpu_enqueue_shift, shift); + WRITE_ONCE(rtp->percpu_dequeue_lim, lim); + smp_store_release(&rtp->percpu_enqueue_lim, lim); + + pr_info("%s: Setting shift to %d and lim to %d rcu_task_cb_adjust=%d rcu_task_cpu_ids=%d.\n", + rtp->name, data_race(rtp->percpu_enqueue_shift), data_race(rtp->percpu_enqueue_lim), + rcu_task_cb_adjust, rcu_task_cpu_ids); } // Compute wakeup time for lazy callback timer. @@ -346,7 +365,7 @@ static void call_rcu_tasks_generic(struct rcu_head *rhp, rcu_callback_t func, rtpcp->rtp_n_lock_retries = 0; } if (rcu_task_cb_adjust && ++rtpcp->rtp_n_lock_retries > rcu_task_contend_lim && - READ_ONCE(rtp->percpu_enqueue_lim) != nr_cpu_ids) + READ_ONCE(rtp->percpu_enqueue_lim) != rcu_task_cpu_ids) needadjust = true; // Defer adjustment to avoid deadlock. } // Queuing callbacks before initialization not yet supported. @@ -366,10 +385,10 @@ static void call_rcu_tasks_generic(struct rcu_head *rhp, rcu_callback_t func, raw_spin_unlock_irqrestore_rcu_node(rtpcp, flags); if (unlikely(needadjust)) { raw_spin_lock_irqsave(&rtp->cbs_gbl_lock, flags); - if (rtp->percpu_enqueue_lim != nr_cpu_ids) { + if (rtp->percpu_enqueue_lim != rcu_task_cpu_ids) { WRITE_ONCE(rtp->percpu_enqueue_shift, 0); - WRITE_ONCE(rtp->percpu_dequeue_lim, nr_cpu_ids); - smp_store_release(&rtp->percpu_enqueue_lim, nr_cpu_ids); + WRITE_ONCE(rtp->percpu_dequeue_lim, rcu_task_cpu_ids); + smp_store_release(&rtp->percpu_enqueue_lim, rcu_task_cpu_ids); pr_info("Switching %s to per-CPU callback queuing.\n", rtp->name); } raw_spin_unlock_irqrestore(&rtp->cbs_gbl_lock, flags); @@ -440,6 +459,8 @@ static int rcu_tasks_need_gpcb(struct rcu_tasks *rtp) int needgpcb = 0; for (cpu = 0; cpu < smp_load_acquire(&rtp->percpu_dequeue_lim); cpu++) { + if (!cpu_possible(cpu)) + continue; struct rcu_tasks_percpu *rtpcp = per_cpu_ptr(rtp->rtpcpu, cpu); /* Advance and accelerate any new callbacks. */ @@ -477,7 +498,7 @@ static int rcu_tasks_need_gpcb(struct rcu_tasks *rtp) if (rcu_task_cb_adjust && ncbs <= rcu_task_collapse_lim) { raw_spin_lock_irqsave(&rtp->cbs_gbl_lock, flags); if (rtp->percpu_enqueue_lim > 1) { - WRITE_ONCE(rtp->percpu_enqueue_shift, order_base_2(nr_cpu_ids)); + WRITE_ONCE(rtp->percpu_enqueue_shift, order_base_2(rcu_task_cpu_ids)); smp_store_release(&rtp->percpu_enqueue_lim, 1); rtp->percpu_dequeue_gpseq = get_state_synchronize_rcu(); gpdone = false; @@ -492,7 +513,9 @@ static int rcu_tasks_need_gpcb(struct rcu_tasks *rtp) pr_info("Completing switch %s to CPU-0 callback queuing.\n", rtp->name); } if (rtp->percpu_dequeue_lim == 1) { - for (cpu = rtp->percpu_dequeue_lim; cpu < nr_cpu_ids; cpu++) { + for (cpu = rtp->percpu_dequeue_lim; cpu < rcu_task_cpu_ids; cpu++) { + if (!cpu_possible(cpu)) + continue; struct rcu_tasks_percpu *rtpcp = per_cpu_ptr(rtp->rtpcpu, cpu); WARN_ON_ONCE(rcu_segcblist_n_cbs(&rtpcp->cblist)); @@ -507,30 +530,32 @@ static int rcu_tasks_need_gpcb(struct rcu_tasks *rtp) // Advance callbacks and invoke any that are ready. static void rcu_tasks_invoke_cbs(struct rcu_tasks *rtp, struct rcu_tasks_percpu *rtpcp) { - int cpu; - int cpunext; int cpuwq; unsigned long flags; int len; + int index; struct rcu_head *rhp; struct rcu_cblist rcl = RCU_CBLIST_INITIALIZER(rcl); struct rcu_tasks_percpu *rtpcp_next; - cpu = rtpcp->cpu; - cpunext = cpu * 2 + 1; - if (cpunext < smp_load_acquire(&rtp->percpu_dequeue_lim)) { - rtpcp_next = per_cpu_ptr(rtp->rtpcpu, cpunext); - cpuwq = rcu_cpu_beenfullyonline(cpunext) ? cpunext : WORK_CPU_UNBOUND; - queue_work_on(cpuwq, system_wq, &rtpcp_next->rtp_work); - cpunext++; - if (cpunext < smp_load_acquire(&rtp->percpu_dequeue_lim)) { - rtpcp_next = per_cpu_ptr(rtp->rtpcpu, cpunext); - cpuwq = rcu_cpu_beenfullyonline(cpunext) ? cpunext : WORK_CPU_UNBOUND; + index = rtpcp->index * 2 + 1; + if (index < num_possible_cpus()) { + rtpcp_next = rtp->rtpcp_array[index]; + if (rtpcp_next->cpu < smp_load_acquire(&rtp->percpu_dequeue_lim)) { + cpuwq = rcu_cpu_beenfullyonline(rtpcp_next->cpu) ? rtpcp_next->cpu : WORK_CPU_UNBOUND; queue_work_on(cpuwq, system_wq, &rtpcp_next->rtp_work); + index++; + if (index < num_possible_cpus()) { + rtpcp_next = rtp->rtpcp_array[index]; + if (rtpcp_next->cpu < smp_load_acquire(&rtp->percpu_dequeue_lim)) { + cpuwq = rcu_cpu_beenfullyonline(rtpcp_next->cpu) ? rtpcp_next->cpu : WORK_CPU_UNBOUND; + queue_work_on(cpuwq, system_wq, &rtpcp_next->rtp_work); + } + } } } - if (rcu_segcblist_empty(&rtpcp->cblist) || !cpu_possible(cpu)) + if (rcu_segcblist_empty(&rtpcp->cblist)) return; raw_spin_lock_irqsave_rcu_node(rtpcp, flags); rcu_segcblist_advance(&rtpcp->cblist, rcu_seq_current(&rtp->tasks_gp_seq)); -- 2.25.1

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[PATCH openEuler-22.03-LTS-SP1] bpf, net: Fix a potential race in do_sock_getsockopt()
by Pu Lehui 07 Nov '24

07 Nov '24

From: Tze-nan Wu <Tze-nan.Wu(a)mediatek.com> mainline inclusion from mainline-v6.11-rc7 commit 33f339a1ba54e56bba57ee9a77c71e385ab4825c category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IB2EW4 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- There's a potential race when `cgroup_bpf_enabled(CGROUP_GETSOCKOPT)` is false during the execution of `BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN`, but becomes true when `BPF_CGROUP_RUN_PROG_GETSOCKOPT` is called. This inconsistency can lead to `BPF_CGROUP_RUN_PROG_GETSOCKOPT` receiving an "-EFAULT" from `__cgroup_bpf_run_filter_getsockopt(max_optlen=0)`. Scenario shown as below: `process A` `process B` ----------- ------------ BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN enable CGROUP_GETSOCKOPT BPF_CGROUP_RUN_PROG_GETSOCKOPT (-EFAULT) To resolve this, remove the `BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN` macro and directly uses `copy_from_sockptr` to ensure that `max_optlen` is always set before `BPF_CGROUP_RUN_PROG_GETSOCKOPT` is invoked. Fixes: 0d01da6afc54 ("bpf: implement getsockopt and setsockopt hooks") Co-developed-by: Yanghui Li <yanghui.li(a)mediatek.com> Signed-off-by: Yanghui Li <yanghui.li(a)mediatek.com> Co-developed-by: Cheng-Jui Wang <cheng-jui.wang(a)mediatek.com> Signed-off-by: Cheng-Jui Wang <cheng-jui.wang(a)mediatek.com> Signed-off-by: Tze-nan Wu <Tze-nan.Wu(a)mediatek.com> Acked-by: Stanislav Fomichev <sdf(a)fomichev.me> Acked-by: Alexei Starovoitov <ast(a)kernel.org> Link: https://patch.msgid.link/20240830082518.23243-1-Tze-nan.Wu@mediatek.com Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> Conflicts: include/linux/bpf-cgroup.h net/socket.c [The conflicts were due to not merge commit 0b05b0cd78c9] Signed-off-by: Pu Lehui <pulehui(a)huawei.com> --- include/linux/bpf-cgroup.h | 9 --------- net/socket.c | 4 ++-- 2 files changed, 2 insertions(+), 11 deletions(-) diff --git a/include/linux/bpf-cgroup.h b/include/linux/bpf-cgroup.h index bf74485b6567..d9d5e38cfc82 100644 --- a/include/linux/bpf-cgroup.h +++ b/include/linux/bpf-cgroup.h @@ -432,14 +432,6 @@ int bpf_percpu_cgroup_storage_update(struct bpf_map *map, void *key, __ret; \ }) -#define BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen) \ -({ \ - int __ret = 0; \ - if (cgroup_bpf_enabled(CGROUP_GETSOCKOPT)) \ - get_user(__ret, optlen); \ - __ret; \ -}) - #define BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock, level, optname, optval, optlen, \ max_optlen, retval) \ ({ \ @@ -528,7 +520,6 @@ static inline int bpf_percpu_cgroup_storage_update(struct bpf_map *map, #define BPF_CGROUP_RUN_PROG_SOCK_OPS(sock_ops) ({ 0; }) #define BPF_CGROUP_RUN_PROG_DEVICE_CGROUP(atype, major, minor, access) ({ 0; }) #define BPF_CGROUP_RUN_PROG_SYSCTL(head,table,write,buf,count,pos) ({ 0; }) -#define BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen) ({ 0; }) #define BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock, level, optname, optval, \ optlen, max_optlen, retval) ({ retval; }) #define BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock, level, optname, optval, optlen, \ diff --git a/net/socket.c b/net/socket.c index 01d530af98ca..6fe73098df03 100644 --- a/net/socket.c +++ b/net/socket.c @@ -2148,7 +2148,7 @@ int __sys_getsockopt(int fd, int level, int optname, char __user *optval, { int err, fput_needed; struct socket *sock; - int max_optlen; + int max_optlen = 0; sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) @@ -2159,7 +2159,7 @@ int __sys_getsockopt(int fd, int level, int optname, char __user *optval, goto out_put; if (!in_compat_syscall()) - max_optlen = BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen); + get_user(max_optlen, optlen); if (level == SOL_SOCKET) err = sock_getsockopt(sock, level, optname, optval, optlen); -- 2.34.1

2 1

[PATCH OLK-5.10] bpf, net: Fix a potential race in do_sock_getsockopt()
by Pu Lehui 07 Nov '24

07 Nov '24

From: Tze-nan Wu <Tze-nan.Wu(a)mediatek.com> mainline inclusion from mainline-v6.11-rc7 commit 33f339a1ba54e56bba57ee9a77c71e385ab4825c category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IB2EW4 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- There's a potential race when `cgroup_bpf_enabled(CGROUP_GETSOCKOPT)` is false during the execution of `BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN`, but becomes true when `BPF_CGROUP_RUN_PROG_GETSOCKOPT` is called. This inconsistency can lead to `BPF_CGROUP_RUN_PROG_GETSOCKOPT` receiving an "-EFAULT" from `__cgroup_bpf_run_filter_getsockopt(max_optlen=0)`. Scenario shown as below: `process A` `process B` ----------- ------------ BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN enable CGROUP_GETSOCKOPT BPF_CGROUP_RUN_PROG_GETSOCKOPT (-EFAULT) To resolve this, remove the `BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN` macro and directly uses `copy_from_sockptr` to ensure that `max_optlen` is always set before `BPF_CGROUP_RUN_PROG_GETSOCKOPT` is invoked. Fixes: 0d01da6afc54 ("bpf: implement getsockopt and setsockopt hooks") Co-developed-by: Yanghui Li <yanghui.li(a)mediatek.com> Signed-off-by: Yanghui Li <yanghui.li(a)mediatek.com> Co-developed-by: Cheng-Jui Wang <cheng-jui.wang(a)mediatek.com> Signed-off-by: Cheng-Jui Wang <cheng-jui.wang(a)mediatek.com> Signed-off-by: Tze-nan Wu <Tze-nan.Wu(a)mediatek.com> Acked-by: Stanislav Fomichev <sdf(a)fomichev.me> Acked-by: Alexei Starovoitov <ast(a)kernel.org> Link: https://patch.msgid.link/20240830082518.23243-1-Tze-nan.Wu@mediatek.com Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> Conflicts: include/linux/bpf-cgroup.h net/socket.c [The conflicts were due to not merge commit 0b05b0cd78c9] Signed-off-by: Pu Lehui <pulehui(a)huawei.com> --- include/linux/bpf-cgroup.h | 9 --------- net/socket.c | 4 ++-- 2 files changed, 2 insertions(+), 11 deletions(-) diff --git a/include/linux/bpf-cgroup.h b/include/linux/bpf-cgroup.h index bf74485b6567..d9d5e38cfc82 100644 --- a/include/linux/bpf-cgroup.h +++ b/include/linux/bpf-cgroup.h @@ -432,14 +432,6 @@ int bpf_percpu_cgroup_storage_update(struct bpf_map *map, void *key, __ret; \ }) -#define BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen) \ -({ \ - int __ret = 0; \ - if (cgroup_bpf_enabled(CGROUP_GETSOCKOPT)) \ - get_user(__ret, optlen); \ - __ret; \ -}) - #define BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock, level, optname, optval, optlen, \ max_optlen, retval) \ ({ \ @@ -528,7 +520,6 @@ static inline int bpf_percpu_cgroup_storage_update(struct bpf_map *map, #define BPF_CGROUP_RUN_PROG_SOCK_OPS(sock_ops) ({ 0; }) #define BPF_CGROUP_RUN_PROG_DEVICE_CGROUP(atype, major, minor, access) ({ 0; }) #define BPF_CGROUP_RUN_PROG_SYSCTL(head,table,write,buf,count,pos) ({ 0; }) -#define BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen) ({ 0; }) #define BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock, level, optname, optval, \ optlen, max_optlen, retval) ({ retval; }) #define BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock, level, optname, optval, optlen, \ diff --git a/net/socket.c b/net/socket.c index 01d530af98ca..6fe73098df03 100644 --- a/net/socket.c +++ b/net/socket.c @@ -2148,7 +2148,7 @@ int __sys_getsockopt(int fd, int level, int optname, char __user *optval, { int err, fput_needed; struct socket *sock; - int max_optlen; + int max_optlen = 0; sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) @@ -2159,7 +2159,7 @@ int __sys_getsockopt(int fd, int level, int optname, char __user *optval, goto out_put; if (!in_compat_syscall()) - max_optlen = BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen); + get_user(max_optlen, optlen); if (level == SOL_SOCKET) err = sock_getsockopt(sock, level, optname, optval, optlen); -- 2.34.1

2 1