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[PATCH openEuler-22.03-LTS-SP1 0/4] Fix 'cgroup/cpuset: Prevent UAF in proc_cpuset_show()' issue with commmunity patches
by Chen Ridong 11 Nov '24

11 Nov '24

Fix 'cgroup/cpuset: Prevent UAF in proc_cpuset_show()' issue with commmunity patches Chen Ridong (3): Revert "cgroup: fix uaf when proc_cpuset_show" cgroup/cpuset: Prevent UAF in proc_cpuset_show() cgroup: add cgroup_root_ext to keep kabi Yafang Shao (1): cgroup: Make operations on the cgroup root_list RCU safe include/linux/cgroup-defs.h | 9 +++++++++ kernel/cgroup/cgroup-internal.h | 3 ++- kernel/cgroup/cgroup-v1.c | 6 ++++-- kernel/cgroup/cgroup.c | 17 ++++++++++------- kernel/cgroup/cpuset.c | 33 +++++++-------------------------- 5 files changed, 32 insertions(+), 36 deletions(-) -- 2.34.1

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[PATCH OLK-6.6 0/5] Script execution control
by Gu Bowen 11 Nov '24

11 Nov '24

Ensure that direct file execution (e.g. ./script.sh) and indirect file execution (e.g. sh script.sh) lead to the same result to support script protection. Gu Bowen (2): IMA support script execution check fix kabi breakage due to exec is_check Kees Cook (1): exec: Check __FMODE_EXEC instead of in_execve for LSMs Linus Torvalds (1): execve: open the executable file before doing anything else Mickaël Salaün (1): exec: Add a new AT_CHECK flag to execveat(2) V2: Add a new patch to fix kabi breakage. Align with the original variables to prevent others from inserting new variables before is_check in the future. fs/exec.c | 87 ++++++++++++++++++------------- include/linux/binfmts.h | 9 ++++ include/linux/ima.h | 1 + include/uapi/linux/fcntl.h | 31 +++++++++++ kernel/audit.h | 3 ++ kernel/auditsc.c | 1 + security/apparmor/lsm.c | 4 +- security/integrity/ima/ima_main.c | 11 ++++ security/security.c | 17 +++++- security/tomoyo/tomoyo.c | 3 +- 10 files changed, 128 insertions(+), 39 deletions(-) -- 2.25.1

2 6

[PATCH OLK-6.6 0/2] Some patches of RDMA from Linux to olk-6.6
by Chengchang Tang 11 Nov '24

11 Nov '24

From: Xinghai Cen <cenxinghai(a)h-partners.com> Some patches of RDMA from Linux to olk-6.6 Junxian Huang (2): RDMA/hns: Fix out-of-order issue of requester when setting FENCE RDMA/hns: Fix NULL pointer derefernce in hns_roce_map_mr_sg() drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 2 +- drivers/infiniband/hw/hns/hns_roce_hw_v2.h | 1 + drivers/infiniband/hw/hns/hns_roce_mr.c | 7 ++++--- 3 files changed, 6 insertions(+), 4 deletions(-) -- 2.33.0

2 3

[PATCH OLK-6.6] RDMA/mad: Improve handling of timed out WRs of mad agent
by Liu Jian 11 Nov '24

11 Nov '24

From: Saravanan Vajravel <saravanan.vajravel(a)broadcom.com> stable inclusion from stable-v6.6.57 commit a195a42dd25ca4f12489687065d00be64939409f category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IB2BVE CVE: CVE-2024-50095 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… ------------------------------------------------- [ Upstream commit 2a777679b8ccd09a9a65ea0716ef10365179caac ] Current timeout handler of mad agent acquires/releases mad_agent_priv lock for every timed out WRs. This causes heavy locking contention when higher no. of WRs are to be handled inside timeout handler. This leads to softlockup with below trace in some use cases where rdma-cm path is used to establish connection between peer nodes Trace: ----- BUG: soft lockup - CPU#4 stuck for 26s! [kworker/u128:3:19767] CPU: 4 PID: 19767 Comm: kworker/u128:3 Kdump: loaded Tainted: G OE ------- --- 5.14.0-427.13.1.el9_4.x86_64 #1 Hardware name: Dell Inc. PowerEdge R740/01YM03, BIOS 2.4.8 11/26/2019 Workqueue: ib_mad1 timeout_sends [ib_core] RIP: 0010:__do_softirq+0x78/0x2ac RSP: 0018:ffffb253449e4f98 EFLAGS: 00000246 RAX: 00000000ffffffff RBX: 0000000000000000 RCX: 000000000000001f RDX: 000000000000001d RSI: 000000003d1879ab RDI: fff363b66fd3a86b RBP: ffffb253604cbcd8 R08: 0000009065635f3b R09: 0000000000000000 R10: 0000000000000040 R11: ffffb253449e4ff8 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000040 FS: 0000000000000000(0000) GS:ffff8caa1fc80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd9ec9db900 CR3: 0000000891934006 CR4: 00000000007706e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: <IRQ> ? show_trace_log_lvl+0x1c4/0x2df ? show_trace_log_lvl+0x1c4/0x2df ? __irq_exit_rcu+0xa1/0xc0 ? watchdog_timer_fn+0x1b2/0x210 ? __pfx_watchdog_timer_fn+0x10/0x10 ? __hrtimer_run_queues+0x127/0x2c0 ? hrtimer_interrupt+0xfc/0x210 ? __sysvec_apic_timer_interrupt+0x5c/0x110 ? sysvec_apic_timer_interrupt+0x37/0x90 ? asm_sysvec_apic_timer_interrupt+0x16/0x20 ? __do_softirq+0x78/0x2ac ? __do_softirq+0x60/0x2ac __irq_exit_rcu+0xa1/0xc0 sysvec_call_function_single+0x72/0x90 </IRQ> <TASK> asm_sysvec_call_function_single+0x16/0x20 RIP: 0010:_raw_spin_unlock_irq+0x14/0x30 RSP: 0018:ffffb253604cbd88 EFLAGS: 00000247 RAX: 000000000001960d RBX: 0000000000000002 RCX: ffff8cad2a064800 RDX: 000000008020001b RSI: 0000000000000001 RDI: ffff8cad5d39f66c RBP: ffff8cad5d39f600 R08: 0000000000000001 R09: 0000000000000000 R10: ffff8caa443e0c00 R11: ffffb253604cbcd8 R12: ffff8cacb8682538 R13: 0000000000000005 R14: ffffb253604cbd90 R15: ffff8cad5d39f66c cm_process_send_error+0x122/0x1d0 [ib_cm] timeout_sends+0x1dd/0x270 [ib_core] process_one_work+0x1e2/0x3b0 ? __pfx_worker_thread+0x10/0x10 worker_thread+0x50/0x3a0 ? __pfx_worker_thread+0x10/0x10 kthread+0xdd/0x100 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x29/0x50 </TASK> Simplified timeout handler by creating local list of timed out WRs and invoke send handler post creating the list. The new method acquires/ releases lock once to fetch the list and hence helps to reduce locking contetiong when processing higher no. of WRs Signed-off-by: Saravanan Vajravel <saravanan.vajravel(a)broadcom.com> Link: https://lore.kernel.org/r/20240722110325.195085-1-saravanan.vajravel@broadc… Signed-off-by: Leon Romanovsky <leon(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Liu Jian <liujian56(a)huawei.com> --- drivers/infiniband/core/mad.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c index 674344eb8e2f..58befbaaf0ad 100644 --- a/drivers/infiniband/core/mad.c +++ b/drivers/infiniband/core/mad.c @@ -2616,14 +2616,16 @@ static int retry_send(struct ib_mad_send_wr_private *mad_send_wr) static void timeout_sends(struct work_struct *work) { + struct ib_mad_send_wr_private *mad_send_wr, *n; struct ib_mad_agent_private *mad_agent_priv; - struct ib_mad_send_wr_private *mad_send_wr; struct ib_mad_send_wc mad_send_wc; + struct list_head local_list; unsigned long flags, delay; mad_agent_priv = container_of(work, struct ib_mad_agent_private, timed_work.work); mad_send_wc.vendor_err = 0; + INIT_LIST_HEAD(&local_list); spin_lock_irqsave(&mad_agent_priv->lock, flags); while (!list_empty(&mad_agent_priv->wait_list)) { @@ -2641,13 +2643,16 @@ static void timeout_sends(struct work_struct *work) break; } - list_del(&mad_send_wr->agent_list); + list_del_init(&mad_send_wr->agent_list); if (mad_send_wr->status == IB_WC_SUCCESS && !retry_send(mad_send_wr)) continue; - spin_unlock_irqrestore(&mad_agent_priv->lock, flags); + list_add_tail(&mad_send_wr->agent_list, &local_list); + } + spin_unlock_irqrestore(&mad_agent_priv->lock, flags); + list_for_each_entry_safe(mad_send_wr, n, &local_list, agent_list) { if (mad_send_wr->status == IB_WC_SUCCESS) mad_send_wc.status = IB_WC_RESP_TIMEOUT_ERR; else @@ -2655,11 +2660,8 @@ static void timeout_sends(struct work_struct *work) mad_send_wc.send_buf = &mad_send_wr->send_buf; mad_agent_priv->agent.send_handler(&mad_agent_priv->agent, &mad_send_wc); - deref_mad_agent(mad_agent_priv); - spin_lock_irqsave(&mad_agent_priv->lock, flags); } - spin_unlock_irqrestore(&mad_agent_priv->lock, flags); } /* -- 2.34.1

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[PATCH OLK-5.10] RDMA/mad: Improve handling of timed out WRs of mad agent
by Liu Jian 11 Nov '24

11 Nov '24

From: Saravanan Vajravel <saravanan.vajravel(a)broadcom.com> stable inclusion from stable-v5.10.227 commit 713adaf0ecfc49405f6e5d9e409d984f628de818 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IB2BVE CVE: CVE-2024-50095 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… ------------------------------------------------- [ Upstream commit 2a777679b8ccd09a9a65ea0716ef10365179caac ] Current timeout handler of mad agent acquires/releases mad_agent_priv lock for every timed out WRs. This causes heavy locking contention when higher no. of WRs are to be handled inside timeout handler. This leads to softlockup with below trace in some use cases where rdma-cm path is used to establish connection between peer nodes Trace: ----- BUG: soft lockup - CPU#4 stuck for 26s! [kworker/u128:3:19767] CPU: 4 PID: 19767 Comm: kworker/u128:3 Kdump: loaded Tainted: G OE ------- --- 5.14.0-427.13.1.el9_4.x86_64 #1 Hardware name: Dell Inc. PowerEdge R740/01YM03, BIOS 2.4.8 11/26/2019 Workqueue: ib_mad1 timeout_sends [ib_core] RIP: 0010:__do_softirq+0x78/0x2ac RSP: 0018:ffffb253449e4f98 EFLAGS: 00000246 RAX: 00000000ffffffff RBX: 0000000000000000 RCX: 000000000000001f RDX: 000000000000001d RSI: 000000003d1879ab RDI: fff363b66fd3a86b RBP: ffffb253604cbcd8 R08: 0000009065635f3b R09: 0000000000000000 R10: 0000000000000040 R11: ffffb253449e4ff8 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000040 FS: 0000000000000000(0000) GS:ffff8caa1fc80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd9ec9db900 CR3: 0000000891934006 CR4: 00000000007706e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: <IRQ> ? show_trace_log_lvl+0x1c4/0x2df ? show_trace_log_lvl+0x1c4/0x2df ? __irq_exit_rcu+0xa1/0xc0 ? watchdog_timer_fn+0x1b2/0x210 ? __pfx_watchdog_timer_fn+0x10/0x10 ? __hrtimer_run_queues+0x127/0x2c0 ? hrtimer_interrupt+0xfc/0x210 ? __sysvec_apic_timer_interrupt+0x5c/0x110 ? sysvec_apic_timer_interrupt+0x37/0x90 ? asm_sysvec_apic_timer_interrupt+0x16/0x20 ? __do_softirq+0x78/0x2ac ? __do_softirq+0x60/0x2ac __irq_exit_rcu+0xa1/0xc0 sysvec_call_function_single+0x72/0x90 </IRQ> <TASK> asm_sysvec_call_function_single+0x16/0x20 RIP: 0010:_raw_spin_unlock_irq+0x14/0x30 RSP: 0018:ffffb253604cbd88 EFLAGS: 00000247 RAX: 000000000001960d RBX: 0000000000000002 RCX: ffff8cad2a064800 RDX: 000000008020001b RSI: 0000000000000001 RDI: ffff8cad5d39f66c RBP: ffff8cad5d39f600 R08: 0000000000000001 R09: 0000000000000000 R10: ffff8caa443e0c00 R11: ffffb253604cbcd8 R12: ffff8cacb8682538 R13: 0000000000000005 R14: ffffb253604cbd90 R15: ffff8cad5d39f66c cm_process_send_error+0x122/0x1d0 [ib_cm] timeout_sends+0x1dd/0x270 [ib_core] process_one_work+0x1e2/0x3b0 ? __pfx_worker_thread+0x10/0x10 worker_thread+0x50/0x3a0 ? __pfx_worker_thread+0x10/0x10 kthread+0xdd/0x100 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x29/0x50 </TASK> Simplified timeout handler by creating local list of timed out WRs and invoke send handler post creating the list. The new method acquires/ releases lock once to fetch the list and hence helps to reduce locking contetiong when processing higher no. of WRs Signed-off-by: Saravanan Vajravel <saravanan.vajravel(a)broadcom.com> Link: https://lore.kernel.org/r/20240722110325.195085-1-saravanan.vajravel@broadc… Signed-off-by: Leon Romanovsky <leon(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Liu Jian <liujian56(a)huawei.com> --- drivers/infiniband/core/mad.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c index 9355e521d9f4..521c3d050be2 100644 --- a/drivers/infiniband/core/mad.c +++ b/drivers/infiniband/core/mad.c @@ -2631,14 +2631,16 @@ static int retry_send(struct ib_mad_send_wr_private *mad_send_wr) static void timeout_sends(struct work_struct *work) { + struct ib_mad_send_wr_private *mad_send_wr, *n; struct ib_mad_agent_private *mad_agent_priv; - struct ib_mad_send_wr_private *mad_send_wr; struct ib_mad_send_wc mad_send_wc; + struct list_head local_list; unsigned long flags, delay; mad_agent_priv = container_of(work, struct ib_mad_agent_private, timed_work.work); mad_send_wc.vendor_err = 0; + INIT_LIST_HEAD(&local_list); spin_lock_irqsave(&mad_agent_priv->lock, flags); while (!list_empty(&mad_agent_priv->wait_list)) { @@ -2656,13 +2658,16 @@ static void timeout_sends(struct work_struct *work) break; } - list_del(&mad_send_wr->agent_list); + list_del_init(&mad_send_wr->agent_list); if (mad_send_wr->status == IB_WC_SUCCESS && !retry_send(mad_send_wr)) continue; - spin_unlock_irqrestore(&mad_agent_priv->lock, flags); + list_add_tail(&mad_send_wr->agent_list, &local_list); + } + spin_unlock_irqrestore(&mad_agent_priv->lock, flags); + list_for_each_entry_safe(mad_send_wr, n, &local_list, agent_list) { if (mad_send_wr->status == IB_WC_SUCCESS) mad_send_wc.status = IB_WC_RESP_TIMEOUT_ERR; else @@ -2670,11 +2675,8 @@ static void timeout_sends(struct work_struct *work) mad_send_wc.send_buf = &mad_send_wr->send_buf; mad_agent_priv->agent.send_handler(&mad_agent_priv->agent, &mad_send_wc); - deref_mad_agent(mad_agent_priv); - spin_lock_irqsave(&mad_agent_priv->lock, flags); } - spin_unlock_irqrestore(&mad_agent_priv->lock, flags); } /* -- 2.34.1

2 5

[PATCH openEuler-22.03-LTS-SP1] RDMA/mad: Improve handling of timed out WRs of mad agent
by Liu Jian 11 Nov '24

11 Nov '24

From: Saravanan Vajravel <saravanan.vajravel(a)broadcom.com> stable inclusion from stable-v5.10.227 commit 713adaf0ecfc49405f6e5d9e409d984f628de818 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IB2BVE CVE: CVE-2024-50095 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… ------------------------------------------------- [ Upstream commit 2a777679b8ccd09a9a65ea0716ef10365179caac ] Current timeout handler of mad agent acquires/releases mad_agent_priv lock for every timed out WRs. This causes heavy locking contention when higher no. of WRs are to be handled inside timeout handler. This leads to softlockup with below trace in some use cases where rdma-cm path is used to establish connection between peer nodes Trace: ----- BUG: soft lockup - CPU#4 stuck for 26s! [kworker/u128:3:19767] CPU: 4 PID: 19767 Comm: kworker/u128:3 Kdump: loaded Tainted: G OE ------- --- 5.14.0-427.13.1.el9_4.x86_64 #1 Hardware name: Dell Inc. PowerEdge R740/01YM03, BIOS 2.4.8 11/26/2019 Workqueue: ib_mad1 timeout_sends [ib_core] RIP: 0010:__do_softirq+0x78/0x2ac RSP: 0018:ffffb253449e4f98 EFLAGS: 00000246 RAX: 00000000ffffffff RBX: 0000000000000000 RCX: 000000000000001f RDX: 000000000000001d RSI: 000000003d1879ab RDI: fff363b66fd3a86b RBP: ffffb253604cbcd8 R08: 0000009065635f3b R09: 0000000000000000 R10: 0000000000000040 R11: ffffb253449e4ff8 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000040 FS: 0000000000000000(0000) GS:ffff8caa1fc80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd9ec9db900 CR3: 0000000891934006 CR4: 00000000007706e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: <IRQ> ? show_trace_log_lvl+0x1c4/0x2df ? show_trace_log_lvl+0x1c4/0x2df ? __irq_exit_rcu+0xa1/0xc0 ? watchdog_timer_fn+0x1b2/0x210 ? __pfx_watchdog_timer_fn+0x10/0x10 ? __hrtimer_run_queues+0x127/0x2c0 ? hrtimer_interrupt+0xfc/0x210 ? __sysvec_apic_timer_interrupt+0x5c/0x110 ? sysvec_apic_timer_interrupt+0x37/0x90 ? asm_sysvec_apic_timer_interrupt+0x16/0x20 ? __do_softirq+0x78/0x2ac ? __do_softirq+0x60/0x2ac __irq_exit_rcu+0xa1/0xc0 sysvec_call_function_single+0x72/0x90 </IRQ> <TASK> asm_sysvec_call_function_single+0x16/0x20 RIP: 0010:_raw_spin_unlock_irq+0x14/0x30 RSP: 0018:ffffb253604cbd88 EFLAGS: 00000247 RAX: 000000000001960d RBX: 0000000000000002 RCX: ffff8cad2a064800 RDX: 000000008020001b RSI: 0000000000000001 RDI: ffff8cad5d39f66c RBP: ffff8cad5d39f600 R08: 0000000000000001 R09: 0000000000000000 R10: ffff8caa443e0c00 R11: ffffb253604cbcd8 R12: ffff8cacb8682538 R13: 0000000000000005 R14: ffffb253604cbd90 R15: ffff8cad5d39f66c cm_process_send_error+0x122/0x1d0 [ib_cm] timeout_sends+0x1dd/0x270 [ib_core] process_one_work+0x1e2/0x3b0 ? __pfx_worker_thread+0x10/0x10 worker_thread+0x50/0x3a0 ? __pfx_worker_thread+0x10/0x10 kthread+0xdd/0x100 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x29/0x50 </TASK> Simplified timeout handler by creating local list of timed out WRs and invoke send handler post creating the list. The new method acquires/ releases lock once to fetch the list and hence helps to reduce locking contetiong when processing higher no. of WRs Signed-off-by: Saravanan Vajravel <saravanan.vajravel(a)broadcom.com> Link: https://lore.kernel.org/r/20240722110325.195085-1-saravanan.vajravel@broadc… Signed-off-by: Leon Romanovsky <leon(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Liu Jian <liujian56(a)huawei.com> --- drivers/infiniband/core/mad.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c index 9355e521d9f4..521c3d050be2 100644 --- a/drivers/infiniband/core/mad.c +++ b/drivers/infiniband/core/mad.c @@ -2631,14 +2631,16 @@ static int retry_send(struct ib_mad_send_wr_private *mad_send_wr) static void timeout_sends(struct work_struct *work) { + struct ib_mad_send_wr_private *mad_send_wr, *n; struct ib_mad_agent_private *mad_agent_priv; - struct ib_mad_send_wr_private *mad_send_wr; struct ib_mad_send_wc mad_send_wc; + struct list_head local_list; unsigned long flags, delay; mad_agent_priv = container_of(work, struct ib_mad_agent_private, timed_work.work); mad_send_wc.vendor_err = 0; + INIT_LIST_HEAD(&local_list); spin_lock_irqsave(&mad_agent_priv->lock, flags); while (!list_empty(&mad_agent_priv->wait_list)) { @@ -2656,13 +2658,16 @@ static void timeout_sends(struct work_struct *work) break; } - list_del(&mad_send_wr->agent_list); + list_del_init(&mad_send_wr->agent_list); if (mad_send_wr->status == IB_WC_SUCCESS && !retry_send(mad_send_wr)) continue; - spin_unlock_irqrestore(&mad_agent_priv->lock, flags); + list_add_tail(&mad_send_wr->agent_list, &local_list); + } + spin_unlock_irqrestore(&mad_agent_priv->lock, flags); + list_for_each_entry_safe(mad_send_wr, n, &local_list, agent_list) { if (mad_send_wr->status == IB_WC_SUCCESS) mad_send_wc.status = IB_WC_RESP_TIMEOUT_ERR; else @@ -2670,11 +2675,8 @@ static void timeout_sends(struct work_struct *work) mad_send_wc.send_buf = &mad_send_wr->send_buf; mad_agent_priv->agent.send_handler(&mad_agent_priv->agent, &mad_send_wc); - deref_mad_agent(mad_agent_priv); - spin_lock_irqsave(&mad_agent_priv->lock, flags); } - spin_unlock_irqrestore(&mad_agent_priv->lock, flags); } /* -- 2.34.1

2 5

[PATCH openEuler-1.0-LTS] net: fix data-races around sk->sk_forward_alloc
by Wang Liang 11 Nov '24

11 Nov '24

maillist inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IB2CPU CVE: NA Reference: https://lore.kernel.org/netdev/20241105080305.717508-1-wangliang74@huawei.c… -------------------------------- Syzkaller reported this warning: ------------[ cut here ]------------ WARNING: CPU: 0 PID: 16 at net/ipv4/af_inet.c:156 inet_sock_destruct+0x1c5/0x1e0 Modules linked in: CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.12.0-rc5 #26 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 RIP: 0010:inet_sock_destruct+0x1c5/0x1e0 Code: 24 12 4c 89 e2 5b 48 c7 c7 98 ec bb 82 41 5c e9 d1 18 17 ff 4c 89 e6 5b 48 c7 c7 d0 ec bb 82 41 5c e9 bf 18 17 ff 0f 0b eb 83 <0f> 0b eb 97 0f 0b eb 87 0f 0b e9 68 ff ff ff 66 66 2e 0f 1f 84 00 RSP: 0018:ffffc9000008bd90 EFLAGS: 00010206 RAX: 0000000000000300 RBX: ffff88810b172a90 RCX: 0000000000000007 RDX: 0000000000000002 RSI: 0000000000000300 RDI: ffff88810b172a00 RBP: ffff88810b172a00 R08: ffff888104273c00 R09: 0000000000100007 R10: 0000000000020000 R11: 0000000000000006 R12: ffff88810b172a00 R13: 0000000000000004 R14: 0000000000000000 R15: ffff888237c31f78 FS: 0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc63fecac8 CR3: 000000000342e000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> ? __warn+0x88/0x130 ? inet_sock_destruct+0x1c5/0x1e0 ? report_bug+0x18e/0x1a0 ? handle_bug+0x53/0x90 ? exc_invalid_op+0x18/0x70 ? asm_exc_invalid_op+0x1a/0x20 ? inet_sock_destruct+0x1c5/0x1e0 __sk_destruct+0x2a/0x200 rcu_do_batch+0x1aa/0x530 ? rcu_do_batch+0x13b/0x530 rcu_core+0x159/0x2f0 handle_softirqs+0xd3/0x2b0 ? __pfx_smpboot_thread_fn+0x10/0x10 run_ksoftirqd+0x25/0x30 smpboot_thread_fn+0xdd/0x1d0 kthread+0xd3/0x100 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x34/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1a/0x30 </TASK> ---[ end trace 0000000000000000 ]--- Its possible that two threads call tcp_v6_do_rcv()/sk_forward_alloc_add() concurrently when sk->sk_state == TCP_LISTEN with sk->sk_lock unlocked, which triggers a data-race around sk->sk_forward_alloc: tcp_v6_rcv tcp_v6_do_rcv skb_clone_and_charge_r sk_rmem_schedule __sk_mem_schedule sk_forward_alloc_add() skb_set_owner_r sk_mem_charge sk_forward_alloc_add() __kfree_skb skb_release_all skb_release_head_state sock_rfree sk_mem_uncharge sk_forward_alloc_add() sk_mem_reclaim // set local var reclaimable __sk_mem_reclaim sk_forward_alloc_add() In this syzkaller testcase, two threads call tcp_v6_do_rcv() with skb->truesize=768, the sk_forward_alloc changes like this: (cpu 1) | (cpu 2) | sk_forward_alloc ... | ... | 0 __sk_mem_schedule() | | +4096 = 4096 | __sk_mem_schedule() | +4096 = 8192 sk_mem_charge() | | -768 = 7424 | sk_mem_charge() | -768 = 6656 ... | ... | sk_mem_uncharge() | | +768 = 7424 reclaimable=7424 | | | sk_mem_uncharge() | +768 = 8192 | reclaimable=8192 | __sk_mem_reclaim() | | -4096 = 4096 | __sk_mem_reclaim() | -8192 = -4096 != 0 The skb_clone_and_charge_r() should not be called in tcp_v6_do_rcv() when sk->sk_state is TCP_LISTEN, it happens later in tcp_v6_syn_recv_sock(). Fix the same issue in dccp_v6_do_rcv(). Suggested-by: Eric Dumazet <edumazet(a)google.com> Reviewed-by: Eric Dumazet <edumazet(a)google.com> Fixes: e994b2f0fb92 ("tcp: do not lock listener to process SYN packets") Signed-off-by: Wang Liang <wangliang74(a)huawei.com> --- net/dccp/ipv6.c | 2 +- net/ipv6/tcp_ipv6.c | 4 +--- 2 files changed, 2 insertions(+), 4 deletions(-) diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c index 4ce961b1dc18..c798fd501239 100644 --- a/net/dccp/ipv6.c +++ b/net/dccp/ipv6.c @@ -602,7 +602,7 @@ static int dccp_v6_do_rcv(struct sock *sk, struct sk_buff *skb) by tcp. Feel free to propose better solution. --ANK (980728) */ - if (np->rxopt.all) + if (np->rxopt.all && sk->sk_state != DCCP_LISTEN) opt_skb = skb_clone_and_charge_r(skb, sk); if (sk->sk_state == DCCP_OPEN) { /* Fast path */ diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index 4d9c9fbef8b9..4d67488000f1 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -1330,7 +1330,7 @@ static int tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb) by tcp. Feel free to propose better solution. --ANK (980728) */ - if (np->rxopt.all) + if (np->rxopt.all && sk->sk_state != TCP_LISTEN) opt_skb = skb_clone_and_charge_r(skb, sk); if (sk->sk_state == TCP_ESTABLISHED) { /* Fast path */ @@ -1367,8 +1367,6 @@ static int tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb) if (nsk != sk) { if (tcp_child_process(sk, nsk, skb)) goto reset; - if (opt_skb) - __kfree_skb(opt_skb); return 0; } } else -- 2.34.1

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[PATCH OLK-6.6] iio: adc: ad7124: fix division by zero in ad7124_set_channel_odr()
by Yipeng Zou 11 Nov '24

11 Nov '24

From: Zicheng Qu <quzicheng(a)huawei.com> stable inclusion from stable-v6.6.60 commit 3dc0eda2cd5c653b162852ae5f0631bfe4ca5e95 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IB37AV CVE: CVE-2024-50232 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… ------------------------------------------------- commit efa353ae1b0541981bc96dbf2e586387d0392baa upstream. In the ad7124_write_raw() function, parameter val can potentially be zero. This may lead to a division by zero when DIV_ROUND_CLOSEST() is called within ad7124_set_channel_odr(). The ad7124_write_raw() function is invoked through the sequence: iio_write_channel_raw() -> iio_write_channel_attribute() -> iio_channel_write(), with no checks in place to ensure val is non-zero. Cc: stable(a)vger.kernel.org Fixes: 7b8d045e497a ("iio: adc: ad7124: allow more than 8 channels") Signed-off-by: Zicheng Qu <quzicheng(a)huawei.com> Reviewed-by: Nuno Sa <nuno.sa(a)analog.com> Link: https://patch.msgid.link/20241022134330.574601-1-quzicheng@huawei.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron(a)huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Yipeng Zou <zouyipeng(a)huawei.com> --- drivers/iio/adc/ad7124.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/ad7124.c b/drivers/iio/adc/ad7124.c index d2fe0269b6d3..34e06e2e51d6 100644 --- a/drivers/iio/adc/ad7124.c +++ b/drivers/iio/adc/ad7124.c @@ -643,7 +643,7 @@ static int ad7124_write_raw(struct iio_dev *indio_dev, switch (info) { case IIO_CHAN_INFO_SAMP_FREQ: - if (val2 != 0) { + if (val2 != 0 || val == 0) { ret = -EINVAL; break; } -- 2.34.1

2 1

[PATCH openEuler-22.03-LTS-SP1 0/2] CVE-2022-48953
by Heyuan Wang 11 Nov '24

11 Nov '24

Rafael J. Wysocki (2): rtc: cmos: Fix event handler registration ordering issue rtc: cmos: Fix wake alarm breakage drivers/rtc/rtc-cmos.c | 32 +++++++++++++++++++++++--------- 1 file changed, 23 insertions(+), 9 deletions(-) -- 2.25.1

2 3

[PATCH OLK-5.10] arm64: probes: Remove broken LDR (literal) uprobe support
by Chen Zhongjin 11 Nov '24

11 Nov '24

From: Mark Rutland <mark.rutland(a)arm.com> stable inclusion from stable-v5.10.228 commit 3728b4eb27910ffedd173018279a970705f2e03a category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IB2BX7 CVE: CVE-2024-50099 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- commit acc450aa07099d071b18174c22a1119c57da8227 upstream. The simulate_ldr_literal() and simulate_ldrsw_literal() functions are unsafe to use for uprobes. Both functions were originally written for use with kprobes, and access memory with plain C accesses. When uprobes was added, these were reused unmodified even though they cannot safely access user memory. There are three key problems: 1) The plain C accesses do not have corresponding extable entries, and thus if they encounter a fault the kernel will treat these as unintentional accesses to user memory, resulting in a BUG() which will kill the kernel thread, and likely lead to further issues (e.g. lockup or panic()). 2) The plain C accesses are subject to HW PAN and SW PAN, and so when either is in use, any attempt to simulate an access to user memory will fault. Thus neither simulate_ldr_literal() nor simulate_ldrsw_literal() can do anything useful when simulating a user instruction on any system with HW PAN or SW PAN. 3) The plain C accesses are privileged, as they run in kernel context, and in practice can access a small range of kernel virtual addresses. The instructions they simulate have a range of +/-1MiB, and since the simulated instructions must itself be a user instructions in the TTBR0 address range, these can address the final 1MiB of the TTBR1 acddress range by wrapping downwards from an address in the first 1MiB of the TTBR0 address range. In contemporary kernels the last 8MiB of TTBR1 address range is reserved, and accesses to this will always fault, meaning this is no worse than (1). Historically, it was theoretically possible for the linear map or vmemmap to spill into the final 8MiB of the TTBR1 address range, but in practice this is extremely unlikely to occur as this would require either: * Having enough physical memory to fill the entire linear map all the way to the final 1MiB of the TTBR1 address range. * Getting unlucky with KASLR randomization of the linear map such that the populated region happens to overlap with the last 1MiB of the TTBR address range. ... and in either case if we were to spill into the final page there would be larger problems as the final page would alias with error pointers. Practically speaking, (1) and (2) are the big issues. Given there have been no reports of problems since the broken code was introduced, it appears that no-one is relying on probing these instructions with uprobes. Avoid these issues by not allowing uprobes on LDR (literal) and LDRSW (literal), limiting the use of simulate_ldr_literal() and simulate_ldrsw_literal() to kprobes. Attempts to place uprobes on LDR (literal) and LDRSW (literal) will be rejected as arm_probe_decode_insn() will return INSN_REJECTED. In future we can consider introducing working uprobes support for these instructions, but this will require more significant work. Fixes: 9842ceae9fa8 ("arm64: Add uprobe support") Cc: stable(a)vger.kernel.org Signed-off-by: Mark Rutland <mark.rutland(a)arm.com> Cc: Catalin Marinas <catalin.marinas(a)arm.com> Cc: Will Deacon <will(a)kernel.org> Link: https://lore.kernel.org/r/20241008155851.801546-2-mark.rutland@arm.com Signed-off-by: Will Deacon <will(a)kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Chen Zhongjin <chenzhongjin(a)huawei.com> --- arch/arm64/kernel/probes/decode-insn.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/arch/arm64/kernel/probes/decode-insn.c b/arch/arm64/kernel/probes/decode-insn.c index 104101f633b10..492e50a6ddbfc 100644 --- a/arch/arm64/kernel/probes/decode-insn.c +++ b/arch/arm64/kernel/probes/decode-insn.c @@ -99,10 +99,6 @@ arm_probe_decode_insn(probe_opcode_t insn, struct arch_probe_insn *api) aarch64_insn_is_blr(insn) || aarch64_insn_is_ret(insn)) { api->handler = simulate_br_blr_ret; - } else if (aarch64_insn_is_ldr_lit(insn)) { - api->handler = simulate_ldr_literal; - } else if (aarch64_insn_is_ldrsw_lit(insn)) { - api->handler = simulate_ldrsw_literal; } else { /* * Instruction cannot be stepped out-of-line and we don't @@ -140,6 +136,17 @@ arm_kprobe_decode_insn(kprobe_opcode_t *addr, struct arch_specific_insn *asi) probe_opcode_t insn = le32_to_cpu(*addr); probe_opcode_t *scan_end = NULL; unsigned long size = 0, offset = 0; + struct arch_probe_insn *api = &asi->api; + + if (aarch64_insn_is_ldr_lit(insn)) { + api->handler = simulate_ldr_literal; + decoded = INSN_GOOD_NO_SLOT; + } else if (aarch64_insn_is_ldrsw_lit(insn)) { + api->handler = simulate_ldrsw_literal; + decoded = INSN_GOOD_NO_SLOT; + } else { + decoded = arm_probe_decode_insn(insn, &asi->api); + } /* * If there's a symbol defined in front of and near enough to @@ -157,7 +164,6 @@ arm_kprobe_decode_insn(kprobe_opcode_t *addr, struct arch_specific_insn *asi) else scan_end = addr - MAX_ATOMIC_CONTEXT_SIZE; } - decoded = arm_probe_decode_insn(insn, &asi->api); if (decoded != INSN_REJECTED && scan_end) if (is_probed_address_atomic(addr - 1, scan_end)) -- 2.25.1

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