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[PATCH OLK-6.6] ppp: fix memory leak in pad_compress_skb
by Zhang Changzhong 29 Sep '25

29 Sep '25

From: Qingfang Deng <dqfext(a)gmail.com> stable inclusion from stable-v6.6.105 commit 85c1c86a67e09143aa464e9bf09c397816772348 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/ICYXVZ CVE: CVE-2025-39847 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 4844123fe0b853a4982c02666cb3fd863d701d50 ] If alloc_skb() fails in pad_compress_skb(), it returns NULL without releasing the old skb. The caller does: skb = pad_compress_skb(ppp, skb); if (!skb) goto drop; drop: kfree_skb(skb); When pad_compress_skb() returns NULL, the reference to the old skb is lost and kfree_skb(skb) ends up doing nothing, leading to a memory leak. Align pad_compress_skb() semantics with realloc(): only free the old skb if allocation and compression succeed. At the call site, use the new_skb variable so the original skb is not lost when pad_compress_skb() fails. Fixes: b3f9b92a6ec1 ("[PPP]: add PPP MPPE encryption module") Signed-off-by: Qingfang Deng <dqfext(a)gmail.com> Reviewed-by: Eric Dumazet <edumazet(a)google.com> Reviewed-by: Yue Haibing <yuehaibing(a)huawei.com> Link: https://patch.msgid.link/20250903100726.269839-1-dqfext@gmail.com Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zhang Changzhong <zhangchangzhong(a)huawei.com> --- drivers/net/ppp/ppp_generic.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c index ee1527c..abe6a5e 100644 --- a/drivers/net/ppp/ppp_generic.c +++ b/drivers/net/ppp/ppp_generic.c @@ -1749,7 +1749,6 @@ pad_compress_skb(struct ppp *ppp, struct sk_buff *skb) */ if (net_ratelimit()) netdev_err(ppp->dev, "ppp: compressor dropped pkt\n"); - kfree_skb(skb); consume_skb(new_skb); new_skb = NULL; } @@ -1851,9 +1850,10 @@ ppp_send_frame(struct ppp *ppp, struct sk_buff *skb) "down - pkt dropped.\n"); goto drop; } - skb = pad_compress_skb(ppp, skb); - if (!skb) + new_skb = pad_compress_skb(ppp, skb); + if (!new_skb) goto drop; + skb = new_skb; } /* -- 2.9.5

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[PATCH OLK-6.6 0/3] CVE-2025-39889
by Zhang Changzhong 29 Sep '25

29 Sep '25

Frédéric Danis (1): Bluetooth: l2cap: Check encryption key size on incoming connection Luiz Augusto von Dentz (2): Bluetooth: L2CAP: Fix not checking l2cap_chan security level Bluetooth: hci_event: Fix not using key encryption size when its known include/net/bluetooth/hci_core.h | 1 + net/bluetooth/hci_conn.c | 24 +++++++++++++ net/bluetooth/hci_event.c | 73 +++++++++++++++++++++++----------------- net/bluetooth/l2cap_core.c | 16 +++++---- 4 files changed, 76 insertions(+), 38 deletions(-) -- 2.9.5

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[PATCH OLK-6.6] libceph: fix invalid accesses to ceph_connection_v1_info
by Zhang Changzhong 29 Sep '25

29 Sep '25

From: Ilya Dryomov <idryomov(a)gmail.com> stable inclusion from stable-v6.6.107 commit 23538cfbeed87159a5ac6c61e7a6de3d8d4486a8 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/ICZCI8 CVE: CVE-2025-39880 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit cdbc9836c7afadad68f374791738f118263c5371 upstream. There is a place where generic code in messenger.c is reading and another place where it is writing to con->v1 union member without checking that the union member is active (i.e. msgr1 is in use). On 64-bit systems, con->v1.auth_retry overlaps with con->v2.out_iter, so such a read is almost guaranteed to return a bogus value instead of 0 when msgr2 is in use. This ends up being fairly benign because the side effect is just the invalidation of the authorizer and successive fetching of new tickets. con->v1.connect_seq overlaps with con->v2.conn_bufs and the fact that it's being written to can cause more serious consequences, but luckily it's not something that happens often. Cc: stable(a)vger.kernel.org Fixes: cd1a677cad99 ("libceph, ceph: implement msgr2.1 protocol (crc and secure modes)") Signed-off-by: Ilya Dryomov <idryomov(a)gmail.com> Reviewed-by: Viacheslav Dubeyko <Slava.Dubeyko(a)ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Zhang Changzhong <zhangchangzhong(a)huawei.com> --- net/ceph/messenger.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c index 3c8b78d..8add913 100644 --- a/net/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -1524,7 +1524,7 @@ static void con_fault_finish(struct ceph_connection *con) * in case we faulted due to authentication, invalidate our * current tickets so that we can get new ones. */ - if (con->v1.auth_retry) { + if (!ceph_msgr2(from_msgr(con->msgr)) && con->v1.auth_retry) { dout("auth_retry %d, invalidating\n", con->v1.auth_retry); if (con->ops->invalidate_authorizer) con->ops->invalidate_authorizer(con); @@ -1714,9 +1714,10 @@ static void clear_standby(struct ceph_connection *con) { /* come back from STANDBY? */ if (con->state == CEPH_CON_S_STANDBY) { - dout("clear_standby %p and ++connect_seq\n", con); + dout("clear_standby %p\n", con); con->state = CEPH_CON_S_PREOPEN; - con->v1.connect_seq++; + if (!ceph_msgr2(from_msgr(con->msgr))) + con->v1.connect_seq++; WARN_ON(ceph_con_flag_test(con, CEPH_CON_F_WRITE_PENDING)); WARN_ON(ceph_con_flag_test(con, CEPH_CON_F_KEEPALIVE_PENDING)); } -- 2.9.5

2 1

[PATCH OLK-6.6] Bluetooth: Fix use-after-free in l2cap_sock_cleanup_listen()
by Zhang Changzhong 29 Sep '25

29 Sep '25

From: Kuniyuki Iwashima <kuniyu(a)google.com> stable inclusion from stable-v6.6.105 commit 6077d16b5c0f65d571eee709de2f0541fb5ef0ca category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/ICYXVI CVE: CVE-2025-39860 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 862c628108562d8c7a516a900034823b381d3cba ] syzbot reported the splat below without a repro. In the splat, a single thread calling bt_accept_dequeue() freed sk and touched it after that. The root cause would be the racy l2cap_sock_cleanup_listen() call added by the cited commit. bt_accept_dequeue() is called under lock_sock() except for l2cap_sock_release(). Two threads could see the same socket during the list iteration in bt_accept_dequeue(): CPU1 CPU2 (close()) ---- ---- sock_hold(sk) sock_hold(sk); lock_sock(sk) <-- block close() sock_put(sk) bt_accept_unlink(sk) sock_put(sk) <-- refcnt by bt_accept_enqueue() release_sock(sk) lock_sock(sk) sock_put(sk) bt_accept_unlink(sk) sock_put(sk) <-- last refcnt bt_accept_unlink(sk) <-- UAF Depending on the timing, the other thread could show up in the "Freed by task" part. Let's call l2cap_sock_cleanup_listen() under lock_sock() in l2cap_sock_release(). [0]: BUG: KASAN: slab-use-after-free in debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline] BUG: KASAN: slab-use-after-free in do_raw_spin_lock+0x26f/0x2b0 kernel/locking/spinlock_debug.c:115 Read of size 4 at addr ffff88803b7eb1c4 by task syz.5.3276/16995 CPU: 3 UID: 0 PID: 16995 Comm: syz.5.3276 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: <TASK> __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xcd/0x630 mm/kasan/report.c:482 kasan_report+0xe0/0x110 mm/kasan/report.c:595 debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline] do_raw_spin_lock+0x26f/0x2b0 kernel/locking/spinlock_debug.c:115 spin_lock_bh include/linux/spinlock.h:356 [inline] release_sock+0x21/0x220 net/core/sock.c:3746 bt_accept_dequeue+0x505/0x600 net/bluetooth/af_bluetooth.c:312 l2cap_sock_cleanup_listen+0x5c/0x2a0 net/bluetooth/l2cap_sock.c:1451 l2cap_sock_release+0x5c/0x210 net/bluetooth/l2cap_sock.c:1425 __sock_release+0xb3/0x270 net/socket.c:649 sock_close+0x1c/0x30 net/socket.c:1439 __fput+0x3ff/0xb70 fs/file_table.c:468 task_work_run+0x14d/0x240 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xeb/0x110 kernel/entry/common.c:43 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline] do_syscall_64+0x3f6/0x4c0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2accf8ebe9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffdb6cb1378 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00000000000426fb RCX: 00007f2accf8ebe9 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007f2acd1b7da0 R08: 0000000000000001 R09: 00000012b6cb166f R10: 0000001b30e20000 R11: 0000000000000246 R12: 00007f2acd1b609c R13: 00007f2acd1b6090 R14: ffffffffffffffff R15: 00007ffdb6cb1490 </TASK> Allocated by task 5326: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:388 [inline] __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:405 kasan_kmalloc include/linux/kasan.h:260 [inline] __do_kmalloc_node mm/slub.c:4365 [inline] __kmalloc_noprof+0x223/0x510 mm/slub.c:4377 kmalloc_noprof include/linux/slab.h:909 [inline] sk_prot_alloc+0x1a8/0x2a0 net/core/sock.c:2239 sk_alloc+0x36/0xc20 net/core/sock.c:2295 bt_sock_alloc+0x3b/0x3a0 net/bluetooth/af_bluetooth.c:151 l2cap_sock_alloc.constprop.0+0x33/0x1d0 net/bluetooth/l2cap_sock.c:1894 l2cap_sock_new_connection_cb+0x101/0x240 net/bluetooth/l2cap_sock.c:1482 l2cap_connect_cfm+0x4c4/0xf80 net/bluetooth/l2cap_core.c:7287 hci_connect_cfm include/net/bluetooth/hci_core.h:2050 [inline] hci_remote_features_evt+0x4dd/0x970 net/bluetooth/hci_event.c:3712 hci_event_func net/bluetooth/hci_event.c:7519 [inline] hci_event_packet+0xa0d/0x11c0 net/bluetooth/hci_event.c:7573 hci_rx_work+0x2c5/0x16b0 net/bluetooth/hci_core.c:4071 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3236 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400 kthread+0x3c2/0x780 kernel/kthread.c:463 ret_from_fork+0x5d7/0x6f0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Freed by task 16995: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:243 [inline] __kasan_slab_free+0x60/0x70 mm/kasan/common.c:275 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2417 [inline] slab_free mm/slub.c:4680 [inline] kfree+0x2b4/0x4d0 mm/slub.c:4879 sk_prot_free net/core/sock.c:2278 [inline] __sk_destruct+0x75f/0x9a0 net/core/sock.c:2373 sk_destruct+0xc2/0xf0 net/core/sock.c:2401 __sk_free+0xf4/0x3e0 net/core/sock.c:2412 sk_free+0x6a/0x90 net/core/sock.c:2423 sock_put include/net/sock.h:1960 [inline] bt_accept_unlink+0x245/0x2e0 net/bluetooth/af_bluetooth.c:262 bt_accept_dequeue+0x517/0x600 net/bluetooth/af_bluetooth.c:308 l2cap_sock_cleanup_listen+0x5c/0x2a0 net/bluetooth/l2cap_sock.c:1451 l2cap_sock_release+0x5c/0x210 net/bluetooth/l2cap_sock.c:1425 __sock_release+0xb3/0x270 net/socket.c:649 sock_close+0x1c/0x30 net/socket.c:1439 __fput+0x3ff/0xb70 fs/file_table.c:468 task_work_run+0x14d/0x240 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xeb/0x110 kernel/entry/common.c:43 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline] do_syscall_64+0x3f6/0x4c0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f Fixes: 1728137b33c0 ("Bluetooth: L2CAP: Fix use-after-free in l2cap_sock_ready_cb") Reported-by: syzbot+e5e64cdf8e92046dd3e1(a)syzkaller.appspotmail.com Closes: https://lore.kernel.org/linux-bluetooth/68af6b9d.a70a0220.3cafd4.0032.GAE@g… Signed-off-by: Kuniyuki Iwashima <kuniyu(a)google.com> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zhang Changzhong <zhangchangzhong(a)huawei.com> --- net/bluetooth/l2cap_sock.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c index 9a90697..59630db 100644 --- a/net/bluetooth/l2cap_sock.c +++ b/net/bluetooth/l2cap_sock.c @@ -1406,7 +1406,10 @@ static int l2cap_sock_release(struct socket *sock) if (!sk) return 0; + lock_sock_nested(sk, L2CAP_NESTING_PARENT); l2cap_sock_cleanup_listen(sk); + release_sock(sk); + bt_sock_unlink(&l2cap_sk_list, sk); err = l2cap_sock_shutdown(sock, SHUT_RDWR); -- 2.9.5

2 1

[PATCH openEuler-1.0-LTS] can: bcm: bcm_tx_setup(): fix KMSAN uninit-value in vfs_write
by Zhang Changzhong 29 Sep '25

29 Sep '25

From: Ivan Orlov <ivan.orlov0322(a)gmail.com> stable inclusion from stable-v4.19.280 commit 618b15d09fed6126356101543451d49860db4388 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/ICYJ1K CVE: CVE-2023-53344 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 2b4c99f7d9a57ecd644eda9b1fb0a1072414959f ] Syzkaller reported the following issue: ===================================================== BUG: KMSAN: uninit-value in aio_rw_done fs/aio.c:1520 [inline] BUG: KMSAN: uninit-value in aio_write+0x899/0x950 fs/aio.c:1600 aio_rw_done fs/aio.c:1520 [inline] aio_write+0x899/0x950 fs/aio.c:1600 io_submit_one+0x1d1c/0x3bf0 fs/aio.c:2019 __do_sys_io_submit fs/aio.c:2078 [inline] __se_sys_io_submit+0x293/0x770 fs/aio.c:2048 __x64_sys_io_submit+0x92/0xd0 fs/aio.c:2048 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Uninit was created at: slab_post_alloc_hook mm/slab.h:766 [inline] slab_alloc_node mm/slub.c:3452 [inline] __kmem_cache_alloc_node+0x71f/0xce0 mm/slub.c:3491 __do_kmalloc_node mm/slab_common.c:967 [inline] __kmalloc+0x11d/0x3b0 mm/slab_common.c:981 kmalloc_array include/linux/slab.h:636 [inline] bcm_tx_setup+0x80e/0x29d0 net/can/bcm.c:930 bcm_sendmsg+0x3a2/0xce0 net/can/bcm.c:1351 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] sock_write_iter+0x495/0x5e0 net/socket.c:1108 call_write_iter include/linux/fs.h:2189 [inline] aio_write+0x63a/0x950 fs/aio.c:1600 io_submit_one+0x1d1c/0x3bf0 fs/aio.c:2019 __do_sys_io_submit fs/aio.c:2078 [inline] __se_sys_io_submit+0x293/0x770 fs/aio.c:2048 __x64_sys_io_submit+0x92/0xd0 fs/aio.c:2048 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd CPU: 1 PID: 5034 Comm: syz-executor350 Not tainted 6.2.0-rc6-syzkaller-80422-geda666ff2276 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 ===================================================== We can follow the call chain and find that 'bcm_tx_setup' function calls 'memcpy_from_msg' to copy some content to the newly allocated frame of 'op->frames'. After that the 'len' field of copied structure being compared with some constant value (64 or 8). However, if 'memcpy_from_msg' returns an error, we will compare some uninitialized memory. This triggers 'uninit-value' issue. This patch will add 'memcpy_from_msg' possible errors processing to avoid uninit-value issue. Tested via syzkaller Reported-by: syzbot+c9bfd85eca611ebf5db1(a)syzkaller.appspotmail.com Link: https://syzkaller.appspot.com/bug?id=47f897f8ad958bbde5790ebf389b5e7e0a3450… Signed-off-by: Ivan Orlov <ivan.orlov0322(a)gmail.com> Fixes: 6f3b911d5f29b ("can: bcm: add support for CAN FD frames") Acked-by: Oliver Hartkopp <socketcan(a)hartkopp.net> Link: https://lore.kernel.org/all/20230314120445.12407-1-ivan.orlov0322@gmail.com Signed-off-by: Marc Kleine-Budde <mkl(a)pengutronix.de> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zhang Changzhong <zhangchangzhong(a)huawei.com> --- net/can/bcm.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/net/can/bcm.c b/net/can/bcm.c index 23efc3a..ab5126a 100644 --- a/net/can/bcm.c +++ b/net/can/bcm.c @@ -925,6 +925,8 @@ static int bcm_tx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg, cf = op->frames + op->cfsiz * i; err = memcpy_from_msg((u8 *)cf, msg, op->cfsiz); + if (err < 0) + goto free_op; if (op->flags & CAN_FD_FRAME) { if (cf->len > 64) @@ -934,12 +936,8 @@ static int bcm_tx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg, err = -EINVAL; } - if (err < 0) { - if (op->frames != &op->sframe) - kfree(op->frames); - kfree(op); - return err; - } + if (err < 0) + goto free_op; if (msg_head->flags & TX_CP_CAN_ID) { /* copy can_id into frame */ @@ -1010,6 +1008,12 @@ static int bcm_tx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg, bcm_tx_start_timer(op); return msg_head->nframes * op->cfsiz + MHSIZ; + +free_op: + if (op->frames != &op->sframe) + kfree(op->frames); + kfree(op); + return err; } /* -- 2.9.5

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[PATCH OLK-6.6] RDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask()
by Zhang Changzhong 29 Sep '25

29 Sep '25

From: "Yury Norov [NVIDIA]" <yury.norov(a)gmail.com> stable inclusion from stable-v6.6.103 commit 89fdac333a17ed990b41565630ef4791782e02f5 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/ICXMAI CVE: CVE-2025-39742 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 59f7d2138591ef8f0e4e4ab5f1ab674e8181ad3a ] The function divides number of online CPUs by num_core_siblings, and later checks the divider by zero. This implies a possibility to get and divide-by-zero runtime error. Fix it by moving the check prior to division. This also helps to save one indentation level. Signed-off-by: Yury Norov [NVIDIA] <yury.norov(a)gmail.com> Link: https://patch.msgid.link/20250604193947.11834-3-yury.norov@gmail.com Signed-off-by: Leon Romanovsky <leon(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zhang Changzhong <zhangchangzhong(a)huawei.com> --- drivers/infiniband/hw/hfi1/affinity.c | 44 +++++++++++++++++++---------------- 1 file changed, 24 insertions(+), 20 deletions(-) diff --git a/drivers/infiniband/hw/hfi1/affinity.c b/drivers/infiniband/hw/hfi1/affinity.c index bbc957c..e5db39f 100644 --- a/drivers/infiniband/hw/hfi1/affinity.c +++ b/drivers/infiniband/hw/hfi1/affinity.c @@ -964,31 +964,35 @@ static void find_hw_thread_mask(uint hw_thread_no, cpumask_var_t hw_thread_mask, struct hfi1_affinity_node_list *affinity) { int possible, curr_cpu, i; - uint num_cores_per_socket = node_affinity.num_online_cpus / + uint num_cores_per_socket; + + cpumask_copy(hw_thread_mask, &affinity->proc.mask); + + if (affinity->num_core_siblings == 0) + return; + + num_cores_per_socket = node_affinity.num_online_cpus / affinity->num_core_siblings / node_affinity.num_online_nodes; - cpumask_copy(hw_thread_mask, &affinity->proc.mask); - if (affinity->num_core_siblings > 0) { - /* Removing other siblings not needed for now */ - possible = cpumask_weight(hw_thread_mask); - curr_cpu = cpumask_first(hw_thread_mask); - for (i = 0; - i < num_cores_per_socket * node_affinity.num_online_nodes; - i++) - curr_cpu = cpumask_next(curr_cpu, hw_thread_mask); - - for (; i < possible; i++) { - cpumask_clear_cpu(curr_cpu, hw_thread_mask); - curr_cpu = cpumask_next(curr_cpu, hw_thread_mask); - } + /* Removing other siblings not needed for now */ + possible = cpumask_weight(hw_thread_mask); + curr_cpu = cpumask_first(hw_thread_mask); + for (i = 0; + i < num_cores_per_socket * node_affinity.num_online_nodes; + i++) + curr_cpu = cpumask_next(curr_cpu, hw_thread_mask); - /* Identifying correct HW threads within physical cores */ - cpumask_shift_left(hw_thread_mask, hw_thread_mask, - num_cores_per_socket * - node_affinity.num_online_nodes * - hw_thread_no); + for (; i < possible; i++) { + cpumask_clear_cpu(curr_cpu, hw_thread_mask); + curr_cpu = cpumask_next(curr_cpu, hw_thread_mask); } + + /* Identifying correct HW threads within physical cores */ + cpumask_shift_left(hw_thread_mask, hw_thread_mask, + num_cores_per_socket * + node_affinity.num_online_nodes * + hw_thread_no); } int hfi1_get_proc_affinity(int node) -- 2.9.5

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[PATCH OLK-6.6 0/4] CVE-2025-39832
by Zhang Changzhong 29 Sep '25

29 Sep '25

Moshe Shemesh (4): net/mlx5: Reload auxiliary drivers on fw_activate net/mlx5: Add device cap for supporting hot reset in sync reset flow net/mlx5: Add support for sync reset using hot reset net/mlx5: Fix lockdep assertion on sync reset unload event drivers/net/ethernet/mellanox/mlx5/core/devlink.c | 2 +- drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c | 184 ++++++++++++++------- drivers/net/ethernet/mellanox/mlx5/core/fw_reset.h | 1 + drivers/net/ethernet/mellanox/mlx5/core/main.c | 3 + include/linux/mlx5/mlx5_ifc.h | 11 +- 5 files changed, 138 insertions(+), 63 deletions(-) -- 2.9.5

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[PATCH v2 openEuler-25.03] xsched: Add base vstream support
by Xia Fukun 29 Sep '25

29 Sep '25

From: Konstantin Meskhidze <konstantin.meskhidze(a)huawei.com> hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/IC5EHB -------------------------------- Add sys_vstream_manage() syscall. Add the basic function framework. Add basic header files. Add new Kconfig.xsched with XCU_SCHEDULER and XCU_VSTREAM configurations. Create new dir kernel/xsched with vstream.c file with base xsched syscalls stubs. Add Makefile in kernel/xsched. Update main kernel Makefile to include kernel/xsched in build. Signed-off-by: Konstantin Meskhidze <konstantin.meskhidze(a)huawei.com> Signed-off-by: Hui Tang <tanghui20@.huawei.com> Signed-off-by: Liu Kai <liukai284(a)huawei.com> Signed-off-by: Xia Fukun <xiafukun(a)huawei.com> --- arch/arm/include/uapi/asm/unistd.h | 1 + arch/arm64/configs/openeuler_defconfig | 1 + arch/powerpc/include/uapi/asm/unistd.h | 1 + arch/x86/configs/openeuler_defconfig | 1 + arch/x86/entry/syscalls/syscall_64.tbl | 2 +- arch/x86/include/uapi/asm/unistd.h | 1 + include/linux/syscalls.h | 2 + include/linux/vstream.h | 9 ++++ include/uapi/asm-generic/unistd.h | 5 +- include/uapi/linux/xcu_vstream.h | 54 +++++++++++++++++++ init/Kconfig | 1 + kernel/Makefile | 1 + kernel/xsched/Kconfig | 11 ++++ kernel/xsched/Makefile | 2 + kernel/xsched/vstream.c | 73 ++++++++++++++++++++++++++ 15 files changed, 162 insertions(+), 3 deletions(-) create mode 100644 include/linux/vstream.h create mode 100644 include/uapi/linux/xcu_vstream.h create mode 100644 kernel/xsched/Kconfig create mode 100644 kernel/xsched/Makefile create mode 100644 kernel/xsched/vstream.c diff --git a/arch/arm/include/uapi/asm/unistd.h b/arch/arm/include/uapi/asm/unistd.h index a1149911464c..725c03445c4a 100644 --- a/arch/arm/include/uapi/asm/unistd.h +++ b/arch/arm/include/uapi/asm/unistd.h @@ -14,6 +14,7 @@ #ifndef _UAPI__ASM_ARM_UNISTD_H #define _UAPI__ASM_ARM_UNISTD_H +#define __IGNORE_kabi_reserved456 #define __NR_OABI_SYSCALL_BASE 0x900000 #define __NR_SYSCALL_MASK 0x0fffff diff --git a/arch/arm64/configs/openeuler_defconfig b/arch/arm64/configs/openeuler_defconfig index 8f97574813ca..a1b73ac9bd56 100644 --- a/arch/arm64/configs/openeuler_defconfig +++ b/arch/arm64/configs/openeuler_defconfig @@ -96,6 +96,7 @@ CONFIG_PREEMPT_NONE=y # CONFIG_PREEMPT_VOLUNTARY is not set # CONFIG_PREEMPT is not set # CONFIG_PREEMPT_DYNAMIC is not set +CONFIG_XCU_SCHEDULER=n # # CPU/Task time and stats accounting diff --git a/arch/powerpc/include/uapi/asm/unistd.h b/arch/powerpc/include/uapi/asm/unistd.h index 5f84e3dc98d0..52148408c41b 100644 --- a/arch/powerpc/include/uapi/asm/unistd.h +++ b/arch/powerpc/include/uapi/asm/unistd.h @@ -9,6 +9,7 @@ */ #ifndef _UAPI_ASM_POWERPC_UNISTD_H_ #define _UAPI_ASM_POWERPC_UNISTD_H_ +#define __IGNORE_kabi_reserved456 #ifndef __powerpc64__ #include <asm/unistd_32.h> diff --git a/arch/x86/configs/openeuler_defconfig b/arch/x86/configs/openeuler_defconfig index d5d3307a9290..633036782e59 100644 --- a/arch/x86/configs/openeuler_defconfig +++ b/arch/x86/configs/openeuler_defconfig @@ -116,6 +116,7 @@ CONFIG_PREEMPT_NONE=y # CONFIG_PREEMPT_VOLUNTARY is not set # CONFIG_PREEMPT is not set # CONFIG_PREEMPT_DYNAMIC is not set +CONFIG_XCU_SCHEDULER=n # # CPU/Task time and stats accounting diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl index f88268a37ec2..504d1a1701d4 100644 --- a/arch/x86/entry/syscalls/syscall_64.tbl +++ b/arch/x86/entry/syscalls/syscall_64.tbl @@ -377,7 +377,7 @@ 453 64 map_shadow_stack sys_map_shadow_stack 454 common kabi_reserved454 sys_ni_syscall 455 common kabi_reserved455 sys_ni_syscall -456 common kabi_reserved456 sys_ni_syscall +456 common vstream_manage sys_vstream_manage 457 common kabi_reserved457 sys_ni_syscall 458 common kabi_reserved458 sys_ni_syscall 459 common kabi_reserved459 sys_ni_syscall diff --git a/arch/x86/include/uapi/asm/unistd.h b/arch/x86/include/uapi/asm/unistd.h index be5e2e747f50..c4e01e910ecd 100644 --- a/arch/x86/include/uapi/asm/unistd.h +++ b/arch/x86/include/uapi/asm/unistd.h @@ -11,6 +11,7 @@ * thing regardless. */ #define __X32_SYSCALL_BIT 0x40000000 +#define __IGNORE_kabi_reserved456 #ifndef __KERNEL__ # ifdef __i386__ diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 36c592e43d65..119aabc72a2d 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -74,6 +74,7 @@ struct landlock_ruleset_attr; enum landlock_rule_type; struct cachestat_range; struct cachestat; +struct vstream_args; #include <linux/types.h> #include <linux/aio_abi.h> @@ -948,6 +949,7 @@ asmlinkage long sys_cachestat(unsigned int fd, struct cachestat __user *cstat, unsigned int flags); asmlinkage long sys_map_shadow_stack(unsigned long addr, unsigned long size, unsigned int flags); +asmlinkage long sys_vstream_manage(struct vstream_args __user *arg, int cmd); /* * Architecture-specific system calls */ diff --git a/include/linux/vstream.h b/include/linux/vstream.h new file mode 100644 index 000000000000..627f754f83c5 --- /dev/null +++ b/include/linux/vstream.h @@ -0,0 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _LINUX_VSTREAM_H +#define _LINUX_VSTREAM_H + +#include <uapi/linux/xcu_vstream.h> + +typedef int vstream_manage_t(struct vstream_args *arg); + +#endif /* _LINUX_VSTREAM_H */ diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h index bf2b30463784..9c7ef260593a 100644 --- a/include/uapi/asm-generic/unistd.h +++ b/include/uapi/asm-generic/unistd.h @@ -830,8 +830,9 @@ __SYSCALL(__NR_map_shadow_stack, sys_map_shadow_stack) __SYSCALL(__NR_kabi_reserved454, sys_ni_syscall) #define __NR_kabi_reserved455 455 __SYSCALL(__NR_kabi_reserved455, sys_ni_syscall) -#define __NR_kabi_reserved456 456 -__SYSCALL(__NR_kabi_reserved456, sys_ni_syscall) +#define __IGNORE_kabi_reserved456 +#define __NR_vstream_manage 456 +__SYSCALL(__NR_vstream_manage, sys_vstream_manage) #define __NR_kabi_reserved457 457 __SYSCALL(__NR_kabi_reserved457, sys_ni_syscall) #define __NR_kabi_reserved458 458 diff --git a/include/uapi/linux/xcu_vstream.h b/include/uapi/linux/xcu_vstream.h new file mode 100644 index 000000000000..32c71dce5ad1 --- /dev/null +++ b/include/uapi/linux/xcu_vstream.h @@ -0,0 +1,54 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +#ifndef _UAPI_XCU_VSTREAM_H +#define _UAPI_XCU_VSTREAM_H + +#include <linux/types.h> + +#define PAYLOAD_SIZE_MAX 512 +#define XCU_SQE_SIZE_MAX 64 + +/* + * VSTREAM_ALLOC: alloc a vstream, buffer for tasks + * VSTREAM_FREE: free a vstream + * VSTREAM_KICK: there are tasks to be executed in the vstream + */ +typedef enum VSTREAM_COMMAND { + VSTREAM_ALLOC = 0, + VSTREAM_FREE, + VSTREAM_KICK, + MAX_COMMAND +} vstream_command_t; + +typedef struct vstream_alloc_args { + __s32 type; + __u32 user_stream_id; +} vstream_alloc_args_t; + +typedef struct vstream_free_args { } vstream_free_args_t; + +typedef struct vstream_kick_args { + __u32 sqe_num; + __s32 timeout; + __s8 sqe[XCU_SQE_SIZE_MAX]; +} vstream_kick_args_t; + +typedef struct vstream_args { + __u32 channel_id; + __u32 fd; + __u32 dev_id; + __u32 task_type; + __u32 sq_id; + __u32 cq_id; + + /* Device related structures. */ + union { + vstream_alloc_args_t va_args; + vstream_free_args_t vf_args; + vstream_kick_args_t vk_args; + }; + + __u32 payload_size; + __s8 payload[PAYLOAD_SIZE_MAX]; +} vstream_args_t; + +#endif /* _UAPI_LINUX_SCHED_H */ diff --git a/init/Kconfig b/init/Kconfig index 5af21834fbff..52290ec7c8db 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -478,6 +478,7 @@ source "kernel/irq/Kconfig" source "kernel/time/Kconfig" source "kernel/bpf/Kconfig" source "kernel/Kconfig.preempt" +source "kernel/xsched/Kconfig" menu "CPU/Task time and stats accounting" diff --git a/kernel/Makefile b/kernel/Makefile index 1fe46db40806..0baddecc349f 100644 --- a/kernel/Makefile +++ b/kernel/Makefile @@ -50,6 +50,7 @@ obj-y += rcu/ obj-y += livepatch/ obj-y += dma/ obj-y += entry/ +obj-y += xsched/ obj-$(CONFIG_MODULES) += module/ obj-$(CONFIG_KCMP) += kcmp.o diff --git a/kernel/xsched/Kconfig b/kernel/xsched/Kconfig new file mode 100644 index 000000000000..093e39c11ca6 --- /dev/null +++ b/kernel/xsched/Kconfig @@ -0,0 +1,11 @@ +# SPDX-License-Identifier: GPL-2.0 + +config XCU_SCHEDULER + bool "Enable XSched functionality" + select CGROUP_XCU + default n + +config XCU_VSTREAM + bool "Enable vstream SQ/CQ buffers maintaining for XPU" + default n + depends on XCU_SCHEDULER diff --git a/kernel/xsched/Makefile b/kernel/xsched/Makefile new file mode 100644 index 000000000000..e972cd93b607 --- /dev/null +++ b/kernel/xsched/Makefile @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0 +obj-y += vstream.o diff --git a/kernel/xsched/vstream.c b/kernel/xsched/vstream.c new file mode 100644 index 000000000000..5723c359e0f2 --- /dev/null +++ b/kernel/xsched/vstream.c @@ -0,0 +1,73 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Vstream manage for XPU device + * + * Copyright (C) 2025-2026 Huawei Technologies Co., Ltd + * + * Author: Konstantin Meskhidze <konstantin.meskhidze(a)huawei.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + */ +#include <linux/syscalls.h> +#include <linux/vstream.h> + +#ifdef CONFIG_XCU_VSTREAM + +int vstream_alloc(struct vstream_args *arg) +{ + return 0; +} + +int vstream_free(struct vstream_args *arg) +{ + return 0; +} + +int vstream_kick(struct vstream_args *arg) +{ + return 0; +} + +/* + * vstream_manage_cmd table + */ +static vstream_manage_t(*vstream_command_table[MAX_COMMAND + 1]) = { + vstream_alloc, // VSTREAM_ALLOC + vstream_free, // VSTREAM_FREE + vstream_kick, // VSTREAM_KICK + NULL // MAX_COMMAND +}; + +SYSCALL_DEFINE2(vstream_manage, struct vstream_args __user *, arg, int, cmd) +{ + int res = 0; + struct vstream_args vstream_arg; + + if (copy_from_user(&vstream_arg, arg, sizeof(struct vstream_args))) { + pr_err("copy_from_user failed\n"); + return -EFAULT; + } + + res = vstream_command_table[cmd](&vstream_arg); + if (copy_to_user(arg, &vstream_arg, sizeof(struct vstream_args))) { + pr_err("copy_to_user failed\n"); + return -EFAULT; + } + + pr_debug("vstream_manage: cmd %d\n", cmd); + return res; +} +#else +SYSCALL_DEFINE2(vstream_manage, struct vstream_args __user *, arg, int, cmd) +{ + return 0; +} +#endif -- 2.34.1

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[PATCH OLK-6.6] memory tiers: use default_dram_perf_ref_source in log message
by Tong Tiangen 29 Sep '25

29 Sep '25

From: Huang Ying <ying.huang(a)intel.com> mainline inclusion from mainline-v6.12-rc1 commit a530bbc53826c607f64e8ee466c3351efaf6aea5 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IBOOGY Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- Commit 3718c02dbd4c ("acpi, hmat: calculate abstract distance with HMAT") added a default_dram_perf_ref_source variable that was initialized but never used. This causes kmemleak to report the following memory leak: unreferenced object 0xff11000225a47b60 (size 16): comm "swapper/0", pid 1, jiffies 4294761654 hex dump (first 16 bytes): 41 43 50 49 20 48 4d 41 54 00 c1 4b 7d b7 75 7c ACPI HMAT..K}.u| backtrace (crc e6d0e7b2): [<ffffffff95d5afdb>] __kmalloc_node_track_caller_noprof+0x36b/0x440 [<ffffffff95c276d6>] kstrdup+0x36/0x60 [<ffffffff95dfabfa>] mt_set_default_dram_perf+0x23a/0x2c0 [<ffffffff9ad64733>] hmat_init+0x2b3/0x660 [<ffffffff95203cec>] do_one_initcall+0x11c/0x5c0 [<ffffffff9ac9cfc4>] do_initcalls+0x1b4/0x1f0 [<ffffffff9ac9d52e>] kernel_init_freeable+0x4ae/0x520 [<ffffffff97c789cc>] kernel_init+0x1c/0x150 [<ffffffff952aecd1>] ret_from_fork+0x31/0x70 [<ffffffff9520b18a>] ret_from_fork_asm+0x1a/0x30 This reminds us that we forget to use the performance data source information. So, use the variable in the error log message to help identify the root cause of inconsistent performance number. Link: https://lkml.kernel.org/r/87y13mvo0n.fsf@yhuang6-desk2.ccr.corp.intel.com Fixes: 3718c02dbd4c ("acpi, hmat: calculate abstract distance with HMAT") Signed-off-by: "Huang, Ying" <ying.huang(a)intel.com> Reported-by: Waiman Long <longman(a)redhat.com> Acked-by: Waiman Long <longman(a)redhat.com> Cc: Alistair Popple <apopple(a)nvidia.com> Cc: Dave Jiang <dave.jiang(a)intel.com> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Conflicts: mm/memory-tiers.c [Context conflict] Signed-off-by: Tong Tiangen <tongtiangen(a)huawei.com> --- mm/memory-tiers.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/mm/memory-tiers.c b/mm/memory-tiers.c index 9a8f23a2377b..629f4bdd2da6 100644 --- a/mm/memory-tiers.c +++ b/mm/memory-tiers.c @@ -669,10 +669,10 @@ int mt_set_default_dram_perf(int nid, struct node_hmem_attrs *perf, pr_info( "memory-tiers: the performance of DRAM node %d mismatches that of the reference\n" "DRAM node %d.\n", nid, default_dram_perf_ref_nid); - pr_info(" performance of reference DRAM node %d:\n", - default_dram_perf_ref_nid); + pr_info(" performance of reference DRAM node %d from %s:\n", + default_dram_perf_ref_nid, default_dram_perf_ref_source); dump_hmem_attrs(&default_dram_perf, " "); - pr_info(" performance of DRAM node %d:\n", nid); + pr_info(" performance of DRAM node %d from %s:\n", nid, source); dump_hmem_attrs(perf, " "); pr_info( " disable default DRAM node performance based abstract distance algorithm.\n"); -- 2.25.1

2 1

[PATCH 00/27] Support NMI watchdog
by Yang Yingliang 29 Sep '25

29 Sep '25

Douglas Anderson (2): watchdog/perf: add a weak function for an arch to detect if perf can use NMIs arm64: enable perf events based hard lockup detector Ionela Voinescu (1): cpufreq: add function to get the hardware max frequency Jinjie Ruan (2): irqchip/gic-v3: Fix hard LOCKUP caused by NMI being masked irqchip/gic-v3: Fix a system stall when using pseudo NMI with CONFIG_ARM64_NMI closed Lecopzer Chen (2): watchdog/perf: adapt the watchdog_perf interface for async model arm64: add hw_nmi_get_sample_period for preparation of lockup detector Lorenzo Pieralisi (1): irqchip/gic-v3: Implement FEAT_GICv3_NMI support Mark Brown (11): arm64/booting: Document boot requirements for FEAT_NMI arm64/sysreg: Add definitions for immediate versions of MSR ALLINT arm64/asm: Introduce assembly macros for managing ALLINT arm64/hyp-stub: Enable access to ALLINT arm64/cpufeature: Detect PE support for FEAT_NMI KVM: arm64: Hide FEAT_NMI from guests arm64/nmi: Manage masking for superpriority interrupts along with DAIF arm64/entry: Don't call preempt_schedule_irq() with NMIs masked arm64/irq: Document handling of FEAT_NMI in irqflags.h arm64/nmi: Add handling of superpriority interrupts as NMIs arm64/nmi: Add Kconfig for NMI Mark Rutland (3): irqchip/gic-v3: Ensure pseudo-NMIs have an ISB between ack and handling irqchip/gic-v3: Refactor ISB + EOIR at ack time irqchip/gic-v3: Fix priority mask handling Xiongfeng Wang (1): init: only move down lockup_detector_init() when sdei_watchdog is enabled Yang Yingliang (1): config: enable CONFIG_ARM64_NMI and HARDLOCK_DETECTOR Yicong Yang (3): watchdog: Support watchdog_sdei coexist with existing watchdogs watchdog: Fix call trace when failed to initialize sdei irqchip/gic-v3: Fix one race condition due to NMI withdraw Documentation/arm64/booting.rst | 6 + arch/arm/include/asm/arch_gicv3.h | 7 +- arch/arm64/Kconfig | 20 ++ arch/arm64/configs/tencent.config | 4 +- arch/arm64/include/asm/assembler.h | 34 +++ arch/arm64/include/asm/cpucaps.h | 2 + arch/arm64/include/asm/cpufeature.h | 29 +++ arch/arm64/include/asm/daifflags.h | 20 ++ arch/arm64/include/asm/irqflags.h | 10 + arch/arm64/include/asm/ptrace.h | 2 +- arch/arm64/include/asm/sysreg.h | 26 +++ arch/arm64/kernel/Makefile | 1 + arch/arm64/kernel/cpufeature.c | 64 +++++- arch/arm64/kernel/head.S | 13 ++ arch/arm64/kernel/perf_event.c | 12 +- arch/arm64/kernel/process.c | 9 + arch/arm64/kernel/watchdog_hld.c | 36 ++++ arch/arm64/kernel/watchdog_sdei.c | 8 +- arch/arm64/kvm/hyp/switch.c | 7 + arch/arm64/kvm/sys_regs.c | 2 + drivers/cpufreq/cpufreq.c | 20 ++ drivers/irqchip/irq-gic-v3.c | 314 +++++++++++++++++++++++----- drivers/perf/arm_pmu.c | 5 + include/linux/cpufreq.h | 5 + include/linux/irqchip/arm-gic-v3.h | 4 + include/linux/nmi.h | 11 + include/linux/perf/arm_pmu.h | 2 + init/main.c | 6 +- kernel/watchdog.c | 83 +++++++- kernel/watchdog_hld.c | 12 +- 30 files changed, 702 insertions(+), 72 deletions(-) create mode 100644 arch/arm64/kernel/watchdog_hld.c -- 2.25.1

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