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[PATCH openEuler-1.0-LTS] xen-netback: don't produce zero-size SKB frags
by Ziyang Xuan 06 Feb '24

06 Feb '24

From: Jan Beulich <jbeulich(a)suse.com> stable inclusion from stable-v5.10.209 commit 5bb8270789c88c0e4ad78c0de2f274f2275c7f6c category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I8YCSC CVE: CVE-2023-46838 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit c7ec4f2d684e17d69bbdd7c4324db0ef5daac26a upstream. While frontends may submit zero-size requests (wasting a precious slot), core networking code as of at least 3ece782693c4b ("sock: skb_copy_ubufs support for compound pages") can't deal with SKBs when they have all zero-size fragments. Respond to empty requests right when populating fragments; all further processing is fragment based and hence won't encounter these empty requests anymore. In a way this should have been that way from the beginning: When no data is to be transferred for a particular request, there's not even a point in validating the respective grant ref. That's no different from e.g. passing NULL into memcpy() when at the same time the size is 0. This is XSA-448 / CVE-2023-46838. Cc: stable(a)vger.kernel.org Signed-off-by: Jan Beulich <jbeulich(a)suse.com> Reviewed-by: Juergen Gross <jgross(a)suse.com> Reviewed-by: Paul Durrant <paul(a)xen.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Ziyang Xuan <william.xuanziyang(a)huawei.com> --- drivers/net/xen-netback/netback.c | 44 ++++++++++++++++++++++++++----- 1 file changed, 38 insertions(+), 6 deletions(-) diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c index 103f2c09d785..850e8fdef34d 100644 --- a/drivers/net/xen-netback/netback.c +++ b/drivers/net/xen-netback/netback.c @@ -440,12 +440,25 @@ static void xenvif_get_requests(struct xenvif_queue *queue, } for (shinfo->nr_frags = 0; nr_slots > 0 && shinfo->nr_frags < MAX_SKB_FRAGS; - shinfo->nr_frags++, gop++, nr_slots--) { + nr_slots--) { + if (unlikely(!txp->size)) { + unsigned long flags; + + spin_lock_irqsave(&queue->response_lock, flags); + make_tx_response(queue, txp, 0, XEN_NETIF_RSP_OKAY); + push_tx_responses(queue); + spin_unlock_irqrestore(&queue->response_lock, flags); + ++txp; + continue; + } + index = pending_index(queue->pending_cons++); pending_idx = queue->pending_ring[index]; xenvif_tx_create_map_op(queue, pending_idx, txp, txp == first ? extra_count : 0, gop); frag_set_pending_idx(&frags[shinfo->nr_frags], pending_idx); + ++shinfo->nr_frags; + ++gop; if (txp == first) txp = txfrags; @@ -458,20 +471,39 @@ static void xenvif_get_requests(struct xenvif_queue *queue, shinfo = skb_shinfo(nskb); frags = shinfo->frags; - for (shinfo->nr_frags = 0; shinfo->nr_frags < nr_slots; - shinfo->nr_frags++, txp++, gop++) { + for (shinfo->nr_frags = 0; shinfo->nr_frags < nr_slots; ++txp) { + if (unlikely(!txp->size)) { + unsigned long flags; + + spin_lock_irqsave(&queue->response_lock, flags); + make_tx_response(queue, txp, 0, + XEN_NETIF_RSP_OKAY); + push_tx_responses(queue); + spin_unlock_irqrestore(&queue->response_lock, + flags); + continue; + } + index = pending_index(queue->pending_cons++); pending_idx = queue->pending_ring[index]; xenvif_tx_create_map_op(queue, pending_idx, txp, 0, gop); frag_set_pending_idx(&frags[shinfo->nr_frags], pending_idx); + ++shinfo->nr_frags; + ++gop; } - skb_shinfo(skb)->frag_list = nskb; - } else if (nskb) { + if (shinfo->nr_frags) { + skb_shinfo(skb)->frag_list = nskb; + nskb = NULL; + } + } + + if (nskb) { /* A frag_list skb was allocated but it is no longer needed - * because enough slots were converted to copy ops above. + * because enough slots were converted to copy ops above or some + * were empty. */ kfree_skb(nskb); } -- 2.25.1

2 1

[PATCH OLK-5.10] xen-netback: don't produce zero-size SKB frags
by Ziyang Xuan 06 Feb '24

06 Feb '24

From: Jan Beulich <jbeulich(a)suse.com> stable inclusion from stable-v5.10.209 commit cce8ba6fa4ec43ad778d64823a2f8ca120d362c1 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I8YCSC CVE: CVE-2023-46838 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit c7ec4f2d684e17d69bbdd7c4324db0ef5daac26a upstream. While frontends may submit zero-size requests (wasting a precious slot), core networking code as of at least 3ece782693c4b ("sock: skb_copy_ubufs support for compound pages") can't deal with SKBs when they have all zero-size fragments. Respond to empty requests right when populating fragments; all further processing is fragment based and hence won't encounter these empty requests anymore. In a way this should have been that way from the beginning: When no data is to be transferred for a particular request, there's not even a point in validating the respective grant ref. That's no different from e.g. passing NULL into memcpy() when at the same time the size is 0. This is XSA-448 / CVE-2023-46838. Cc: stable(a)vger.kernel.org Signed-off-by: Jan Beulich <jbeulich(a)suse.com> Reviewed-by: Juergen Gross <jgross(a)suse.com> Reviewed-by: Paul Durrant <paul(a)xen.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Ziyang Xuan <william.xuanziyang(a)huawei.com> --- drivers/net/xen-netback/netback.c | 44 ++++++++++++++++++++++++++----- 1 file changed, 38 insertions(+), 6 deletions(-) diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c index 1c366ddf62bc..d25bb5b9a54c 100644 --- a/drivers/net/xen-netback/netback.c +++ b/drivers/net/xen-netback/netback.c @@ -463,12 +463,25 @@ static void xenvif_get_requests(struct xenvif_queue *queue, } for (shinfo->nr_frags = 0; nr_slots > 0 && shinfo->nr_frags < MAX_SKB_FRAGS; - shinfo->nr_frags++, gop++, nr_slots--) { + nr_slots--) { + if (unlikely(!txp->size)) { + unsigned long flags; + + spin_lock_irqsave(&queue->response_lock, flags); + make_tx_response(queue, txp, 0, XEN_NETIF_RSP_OKAY); + push_tx_responses(queue); + spin_unlock_irqrestore(&queue->response_lock, flags); + ++txp; + continue; + } + index = pending_index(queue->pending_cons++); pending_idx = queue->pending_ring[index]; xenvif_tx_create_map_op(queue, pending_idx, txp, txp == first ? extra_count : 0, gop); frag_set_pending_idx(&frags[shinfo->nr_frags], pending_idx); + ++shinfo->nr_frags; + ++gop; if (txp == first) txp = txfrags; @@ -481,20 +494,39 @@ static void xenvif_get_requests(struct xenvif_queue *queue, shinfo = skb_shinfo(nskb); frags = shinfo->frags; - for (shinfo->nr_frags = 0; shinfo->nr_frags < nr_slots; - shinfo->nr_frags++, txp++, gop++) { + for (shinfo->nr_frags = 0; shinfo->nr_frags < nr_slots; ++txp) { + if (unlikely(!txp->size)) { + unsigned long flags; + + spin_lock_irqsave(&queue->response_lock, flags); + make_tx_response(queue, txp, 0, + XEN_NETIF_RSP_OKAY); + push_tx_responses(queue); + spin_unlock_irqrestore(&queue->response_lock, + flags); + continue; + } + index = pending_index(queue->pending_cons++); pending_idx = queue->pending_ring[index]; xenvif_tx_create_map_op(queue, pending_idx, txp, 0, gop); frag_set_pending_idx(&frags[shinfo->nr_frags], pending_idx); + ++shinfo->nr_frags; + ++gop; } - skb_shinfo(skb)->frag_list = nskb; - } else if (nskb) { + if (shinfo->nr_frags) { + skb_shinfo(skb)->frag_list = nskb; + nskb = NULL; + } + } + + if (nskb) { /* A frag_list skb was allocated but it is no longer needed - * because enough slots were converted to copy ops above. + * because enough slots were converted to copy ops above or some + * were empty. */ kfree_skb(nskb); } -- 2.25.1

2 1

[PATCH OLK-6.6 v2] block: kabi: KABI reservation for blk-cgroup
by Li Nan 06 Feb '24

06 Feb '24

hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I9110C ---------------------------------------------------------------------- Reserve KABI for file blk-cgroup.h. Signed-off-by: Li Nan <linan122(a)huawei.com> --- block/blk-cgroup.h | 30 ++++++++++++++++++++++++++++++ include/linux/blkdev.h | 2 +- 2 files changed, 31 insertions(+), 1 deletion(-) diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h index a2eb8be26f45..9128046994df 100644 --- a/block/blk-cgroup.h +++ b/block/blk-cgroup.h @@ -33,6 +33,7 @@ enum blkg_iostat_type { BLKG_IOSTAT_READ, BLKG_IOSTAT_WRITE, BLKG_IOSTAT_DISCARD, + BLKG_IOSTAT_KABI_REVERSE, BLKG_IOSTAT_NR, }; @@ -49,6 +50,12 @@ struct blkg_iostat_set { int lqueued; /* queued in llist */ struct blkg_iostat cur; struct blkg_iostat last; + + KABI_RESERVE(1) + KABI_RESERVE(2) + KABI_RESERVE(3) + KABI_RESERVE(4) + KABI_RESERVE(5) }; /* association between a blk cgroup and a request queue */ @@ -88,6 +95,12 @@ struct blkcg_gq { int last_use; struct rcu_head rcu_head; + + KABI_RESERVE(1) + KABI_RESERVE(2) + KABI_RESERVE(3) + KABI_RESERVE(4) + KABI_RESERVE(5) }; struct blkcg { @@ -117,6 +130,12 @@ struct blkcg { #ifdef CONFIG_CGROUP_V1_WRITEBACK struct list_head memcg_list; #endif + + KABI_RESERVE(1) + KABI_RESERVE(2) + KABI_RESERVE(3) + KABI_RESERVE(4) + KABI_RESERVE(5) }; static inline struct blkcg *css_to_blkcg(struct cgroup_subsys_state *css) @@ -140,6 +159,9 @@ struct blkg_policy_data { struct blkcg_gq *blkg; int plid; bool online; + + KABI_RESERVE(1) + KABI_RESERVE(2) }; /* @@ -153,6 +175,9 @@ struct blkcg_policy_data { /* the blkcg and policy id this per-policy data belongs to */ struct blkcg *blkcg; int plid; + + KABI_RESERVE(1) + KABI_RESERVE(2) }; typedef struct blkcg_policy_data *(blkcg_pol_alloc_cpd_fn)(gfp_t gfp); @@ -186,6 +211,11 @@ struct blkcg_policy { blkcg_pol_free_pd_fn *pd_free_fn; blkcg_pol_reset_pd_stats_fn *pd_reset_stats_fn; blkcg_pol_stat_pd_fn *pd_stat_fn; + + KABI_RESERVE(1) + KABI_RESERVE(2) + KABI_RESERVE(3) + KABI_RESERVE(4) }; extern struct blkcg blkcg_root; diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index d8a0ee46ba37..7478cf6c6d63 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -48,7 +48,7 @@ extern struct class block_class; * Maximum number of blkcg policies allowed to be registered concurrently. * Defined here to simplify include dependency. */ -#define BLKCG_MAX_POLS 6 +#define BLKCG_MAX_POLS 10 #define DISK_MAX_PARTS 256 #define DISK_NAME_LEN 32 -- 2.39.2

2 1

[PATCH OLK-6.6 0/1] sched: migtate user interface from smart grid to sched bpf
by Liao Chen 06 Feb '24

06 Feb '24

Migtating user interface from smart grid to sched bpf, which allows users to set SCHED_GRID_QOS_TASK_LEVEL through: /proc/${pid}/task/${pid}/tag interface. Although arbitrary integer value could be assigned to <tag>, currnetly we clamp the value of SCHED_GRID_QOS_TASK_LEVEL to 0-7, which maintains consistency. Liao Chen (1): sched: migtate user interface from smart grid to sched bpf fs/proc/base.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) -- 2.34.1

2 2

[PATCH OLK-6.6 0/2] Feature: smart halt poll & export vcpustat
by liangtian 06 Feb '24

06 Feb '24

2 3

[openeuler:OLK-6.6 2519/3004] drivers/gpu/drm/phytium/phytium_plane.c:30:6: warning: no previous prototype for function 'phytium_plane_destroy'
by kernel test robot 06 Feb '24

06 Feb '24

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: fa30d756edd690da32744e72880e2ff10c01208f commit: b80df10f845813bb4fc2002b5386ecdfa8be5f6c [2519/3004] DRM: Phytium display DRM driver config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20240206/202402061009.wXmMpBHa-lkp@…) compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 7dd790db8b77c4a833c06632e903dc4f13877a64) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240206/202402061009.wXmMpBHa-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202402061009.wXmMpBHa-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/gpu/drm/phytium/phytium_plane.c:30:6: warning: no previous prototype for function 'phytium_plane_destroy' [-Wmissing-prototypes] 30 | void phytium_plane_destroy(struct drm_plane *plane) | ^ drivers/gpu/drm/phytium/phytium_plane.c:30:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 30 | void phytium_plane_destroy(struct drm_plane *plane) | ^ | static >> drivers/gpu/drm/phytium/phytium_plane.c:72:1: warning: no previous prototype for function 'phytium_plane_atomic_set_property' [-Wmissing-prototypes] 72 | phytium_plane_atomic_set_property(struct drm_plane *plane, | ^ drivers/gpu/drm/phytium/phytium_plane.c:71:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 71 | int | ^ | static >> drivers/gpu/drm/phytium/phytium_plane.c:82:1: warning: no previous prototype for function 'phytium_plane_atomic_duplicate_state' [-Wmissing-prototypes] 82 | phytium_plane_atomic_duplicate_state(struct drm_plane *plane) | ^ drivers/gpu/drm/phytium/phytium_plane.c:81:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 81 | struct drm_plane_state * | ^ | static >> drivers/gpu/drm/phytium/phytium_plane.c:103:1: warning: no previous prototype for function 'phytium_plane_atomic_destroy_state' [-Wmissing-prototypes] 103 | phytium_plane_atomic_destroy_state(struct drm_plane *plane, struct drm_plane_state *state) | ^ drivers/gpu/drm/phytium/phytium_plane.c:102:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 102 | void | ^ | static drivers/gpu/drm/phytium/phytium_plane.c:362:20: warning: variable 'crtc_x' set but not used [-Wunused-but-set-variable] 362 | int src_x, src_y, crtc_x, crtc_y, crtc_w, crtc_h; | ^ drivers/gpu/drm/phytium/phytium_plane.c:362:28: warning: variable 'crtc_y' set but not used [-Wunused-but-set-variable] 362 | int src_x, src_y, crtc_x, crtc_y, crtc_w, crtc_h; | ^ 6 warnings generated. -- >> drivers/gpu/drm/phytium/phytium_crtc.c:380:1: warning: no previous prototype for function 'phytium_crtc_atomic_duplicate_state' [-Wmissing-prototypes] 380 | phytium_crtc_atomic_duplicate_state(struct drm_crtc *crtc) | ^ drivers/gpu/drm/phytium/phytium_crtc.c:379:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 379 | struct drm_crtc_state * | ^ | static >> drivers/gpu/drm/phytium/phytium_crtc.c:395:1: warning: no previous prototype for function 'phytium_crtc_atomic_destroy_state' [-Wmissing-prototypes] 395 | phytium_crtc_atomic_destroy_state(struct drm_crtc *crtc, | ^ drivers/gpu/drm/phytium/phytium_crtc.c:394:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 394 | void | ^ | static drivers/gpu/drm/phytium/phytium_crtc.c:607:29: warning: variable 'phytium_crtc_state' set but not used [-Wunused-but-set-variable] 607 | struct phytium_crtc_state *phytium_crtc_state = NULL; | ^ 3 warnings generated. -- >> drivers/gpu/drm/phytium/phytium_dp.c:506:6: warning: no previous prototype for function 'phytium_dp_coding_8b10b_need_enable' [-Wmissing-prototypes] 506 | bool phytium_dp_coding_8b10b_need_enable(unsigned char test_pattern) | ^ drivers/gpu/drm/phytium/phytium_dp.c:506:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 506 | bool phytium_dp_coding_8b10b_need_enable(unsigned char test_pattern) | ^ | static >> drivers/gpu/drm/phytium/phytium_dp.c:523:6: warning: no previous prototype for function 'phytium_dp_scrambled_need_enable' [-Wmissing-prototypes] 523 | bool phytium_dp_scrambled_need_enable(unsigned char test_pattern) | ^ drivers/gpu/drm/phytium/phytium_dp.c:523:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 523 | bool phytium_dp_scrambled_need_enable(unsigned char test_pattern) | ^ | static >> drivers/gpu/drm/phytium/phytium_dp.c:656:6: warning: no previous prototype for function 'phytium_dp_hw_enable_audio' [-Wmissing-prototypes] 656 | void phytium_dp_hw_enable_audio(struct phytium_dp_device *phytium_dp) | ^ drivers/gpu/drm/phytium/phytium_dp.c:656:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 656 | void phytium_dp_hw_enable_audio(struct phytium_dp_device *phytium_dp) | ^ | static >> drivers/gpu/drm/phytium/phytium_dp.c:825:6: warning: no previous prototype for function 'phytium_dp_hw_disable_video' [-Wmissing-prototypes] 825 | void phytium_dp_hw_disable_video(struct phytium_dp_device *phytium_dp) | ^ drivers/gpu/drm/phytium/phytium_dp.c:825:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 825 | void phytium_dp_hw_disable_video(struct phytium_dp_device *phytium_dp) | ^ | static >> drivers/gpu/drm/phytium/phytium_dp.c:836:6: warning: no previous prototype for function 'phytium_dp_hw_video_is_enable' [-Wmissing-prototypes] 836 | bool phytium_dp_hw_video_is_enable(struct phytium_dp_device *phytium_dp) | ^ drivers/gpu/drm/phytium/phytium_dp.c:836:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 836 | bool phytium_dp_hw_video_is_enable(struct phytium_dp_device *phytium_dp) | ^ | static >> drivers/gpu/drm/phytium/phytium_dp.c:847:6: warning: no previous prototype for function 'phytium_dp_hw_enable_video' [-Wmissing-prototypes] 847 | void phytium_dp_hw_enable_video(struct phytium_dp_device *phytium_dp) | ^ drivers/gpu/drm/phytium/phytium_dp.c:847:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 847 | void phytium_dp_hw_enable_video(struct phytium_dp_device *phytium_dp) | ^ | static >> drivers/gpu/drm/phytium/phytium_dp.c:859:6: warning: no previous prototype for function 'phytium_dp_hw_config_video' [-Wmissing-prototypes] 859 | void phytium_dp_hw_config_video(struct phytium_dp_device *phytium_dp) | ^ drivers/gpu/drm/phytium/phytium_dp.c:859:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 859 | void phytium_dp_hw_config_video(struct phytium_dp_device *phytium_dp) | ^ | static >> drivers/gpu/drm/phytium/phytium_dp.c:948:6: warning: no previous prototype for function 'phytium_dp_hw_disable_output' [-Wmissing-prototypes] 948 | void phytium_dp_hw_disable_output(struct phytium_dp_device *phytium_dp) | ^ drivers/gpu/drm/phytium/phytium_dp.c:948:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 948 | void phytium_dp_hw_disable_output(struct phytium_dp_device *phytium_dp) | ^ | static >> drivers/gpu/drm/phytium/phytium_dp.c:960:6: warning: no previous prototype for function 'phytium_dp_hw_enable_output' [-Wmissing-prototypes] 960 | void phytium_dp_hw_enable_output(struct phytium_dp_device *phytium_dp) | ^ drivers/gpu/drm/phytium/phytium_dp.c:960:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 960 | void phytium_dp_hw_enable_output(struct phytium_dp_device *phytium_dp) | ^ | static >> drivers/gpu/drm/phytium/phytium_dp.c:972:6: warning: no previous prototype for function 'phytium_dp_hw_enable_input_source' [-Wmissing-prototypes] 972 | void phytium_dp_hw_enable_input_source(struct phytium_dp_device *phytium_dp) | ^ drivers/gpu/drm/phytium/phytium_dp.c:972:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 972 | void phytium_dp_hw_enable_input_source(struct phytium_dp_device *phytium_dp) | ^ | static >> drivers/gpu/drm/phytium/phytium_dp.c:983:6: warning: no previous prototype for function 'phytium_dp_hw_disable_input_source' [-Wmissing-prototypes] 983 | void phytium_dp_hw_disable_input_source(struct phytium_dp_device *phytium_dp) | ^ drivers/gpu/drm/phytium/phytium_dp.c:983:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 983 | void phytium_dp_hw_disable_input_source(struct phytium_dp_device *phytium_dp) | ^ | static >> drivers/gpu/drm/phytium/phytium_dp.c:993:6: warning: no previous prototype for function 'phytium_dp_hw_output_is_enable' [-Wmissing-prototypes] 993 | bool phytium_dp_hw_output_is_enable(struct phytium_dp_device *phytium_dp) | ^ drivers/gpu/drm/phytium/phytium_dp.c:993:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 993 | bool phytium_dp_hw_output_is_enable(struct phytium_dp_device *phytium_dp) | ^ | static >> drivers/gpu/drm/phytium/phytium_dp.c:1030:6: warning: no previous prototype for function 'phytium_dp_hw_hpd_irq_setup' [-Wmissing-prototypes] 1030 | void phytium_dp_hw_hpd_irq_setup(struct phytium_dp_device *phytium_dp, bool enable) | ^ drivers/gpu/drm/phytium/phytium_dp.c:1030:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1030 | void phytium_dp_hw_hpd_irq_setup(struct phytium_dp_device *phytium_dp, bool enable) | ^ | static >> drivers/gpu/drm/phytium/phytium_dp.c:1045:5: warning: no previous prototype for function 'phytium_dp_hw_init' [-Wmissing-prototypes] 1045 | int phytium_dp_hw_init(struct phytium_dp_device *phytium_dp) | ^ drivers/gpu/drm/phytium/phytium_dp.c:1045:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1045 | int phytium_dp_hw_init(struct phytium_dp_device *phytium_dp) | ^ | static >> drivers/gpu/drm/phytium/phytium_dp.c:1223:6: warning: no previous prototype for function 'phytium_dp_dpcd_sink_dpms' [-Wmissing-prototypes] 1223 | void phytium_dp_dpcd_sink_dpms(struct phytium_dp_device *phytium_dp, int mode) | ^ drivers/gpu/drm/phytium/phytium_dp.c:1223:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1223 | void phytium_dp_dpcd_sink_dpms(struct phytium_dp_device *phytium_dp, int mode) | ^ | static >> drivers/gpu/drm/phytium/phytium_dp.c:1448:5: warning: no previous prototype for function 'phytium_dp_get_link_train_fallback_values' [-Wmissing-prototypes] 1448 | int phytium_dp_get_link_train_fallback_values(struct phytium_dp_device *phytium_dp) | ^ drivers/gpu/drm/phytium/phytium_dp.c:1448:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1448 | int phytium_dp_get_link_train_fallback_values(struct phytium_dp_device *phytium_dp) | ^ | static >> drivers/gpu/drm/phytium/phytium_dp.c:1497:5: warning: no previous prototype for function 'phytium_dp_start_link_train' [-Wmissing-prototypes] 1497 | int phytium_dp_start_link_train(struct phytium_dp_device *phytium_dp) | ^ drivers/gpu/drm/phytium/phytium_dp.c:1497:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1497 | int phytium_dp_start_link_train(struct phytium_dp_device *phytium_dp) | ^ | static >> drivers/gpu/drm/phytium/phytium_dp.c:1802:6: warning: no previous prototype for function 'phytium_dp_hpd_poll_handler' [-Wmissing-prototypes] 1802 | void phytium_dp_hpd_poll_handler(struct phytium_display_private *priv) | ^ drivers/gpu/drm/phytium/phytium_dp.c:1802:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1802 | void phytium_dp_hpd_poll_handler(struct phytium_display_private *priv) | ^ | static >> drivers/gpu/drm/phytium/phytium_dp.c:1949:6: warning: no previous prototype for function 'phytium_dp_fast_link_train' [-Wmissing-prototypes] 1949 | bool phytium_dp_fast_link_train(struct phytium_dp_device *phytium_dp) | ^ drivers/gpu/drm/phytium/phytium_dp.c:1949:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1949 | bool phytium_dp_fast_link_train(struct phytium_dp_device *phytium_dp) | ^ | static >> drivers/gpu/drm/phytium/phytium_dp.c:2140:6: warning: no previous prototype for function 'phytium_dp_adjust_link_train_parameter' [-Wmissing-prototypes] 2140 | void phytium_dp_adjust_link_train_parameter(struct phytium_dp_device *phytium_dp) | ^ drivers/gpu/drm/phytium/phytium_dp.c:2140:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2140 | void phytium_dp_adjust_link_train_parameter(struct phytium_dp_device *phytium_dp) | ^ | static drivers/gpu/drm/phytium/phytium_dp.c:2200:1: warning: no previous prototype for function 'phytium_encoder_mode_valid' [-Wmissing-prototypes] 2200 | phytium_encoder_mode_valid(struct drm_encoder *encoder, const struct drm_display_mode *mode) | ^ drivers/gpu/drm/phytium/phytium_dp.c:2199:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2199 | enum drm_mode_status | ^ | static drivers/gpu/drm/phytium/phytium_dp.c:2256:6: warning: no previous prototype for function 'phytium_dp_encoder_destroy' [-Wmissing-prototypes] 2256 | void phytium_dp_encoder_destroy(struct drm_encoder *encoder) | ^ drivers/gpu/drm/phytium/phytium_dp.c:2256:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2256 | void phytium_dp_encoder_destroy(struct drm_encoder *encoder) | ^ | static drivers/gpu/drm/phytium/phytium_dp.c:2469:5: warning: no previous prototype for function 'phytium_get_encoder_crtc_mask' [-Wmissing-prototypes] 2469 | int phytium_get_encoder_crtc_mask(struct phytium_dp_device *phytium_dp, int port) | ^ drivers/gpu/drm/phytium/phytium_dp.c:2469:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2469 | int phytium_get_encoder_crtc_mask(struct phytium_dp_device *phytium_dp, int port) | ^ | static 23 warnings generated. -- >> drivers/gpu/drm/phytium/phytium_gem.c:22:5: warning: no previous prototype for function 'phytium_memory_pool_alloc' [-Wmissing-prototypes] 22 | int phytium_memory_pool_alloc(struct phytium_display_private *priv, void **pvaddr, | ^ drivers/gpu/drm/phytium/phytium_gem.c:22:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 22 | int phytium_memory_pool_alloc(struct phytium_display_private *priv, void **pvaddr, | ^ | static >> drivers/gpu/drm/phytium/phytium_gem.c:37:6: warning: no previous prototype for function 'phytium_memory_pool_free' [-Wmissing-prototypes] 37 | void phytium_memory_pool_free(struct phytium_display_private *priv, void *vaddr, uint64_t size) | ^ drivers/gpu/drm/phytium/phytium_gem.c:37:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 37 | void phytium_memory_pool_free(struct phytium_display_private *priv, void *vaddr, uint64_t size) | ^ | static >> drivers/gpu/drm/phytium/phytium_gem.c:160:5: warning: no previous prototype for function 'phytium_gem_prime_vmap' [-Wmissing-prototypes] 160 | int phytium_gem_prime_vmap(struct drm_gem_object *obj, struct iosys_map *map) | ^ drivers/gpu/drm/phytium/phytium_gem.c:160:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 160 | int phytium_gem_prime_vmap(struct drm_gem_object *obj, struct iosys_map *map) | ^ | static >> drivers/gpu/drm/phytium/phytium_gem.c:169:6: warning: no previous prototype for function 'phytium_gem_prime_vunmap' [-Wmissing-prototypes] 169 | void phytium_gem_prime_vunmap(struct drm_gem_object *obj, struct iosys_map *map) | ^ drivers/gpu/drm/phytium/phytium_gem.c:169:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 169 | void phytium_gem_prime_vunmap(struct drm_gem_object *obj, struct iosys_map *map) | ^ | static >> drivers/gpu/drm/phytium/phytium_gem.c:181:5: warning: no previous prototype for function 'phytium_dma_transfer' [-Wmissing-prototypes] 181 | int phytium_dma_transfer(struct drm_device *drm_dev, int dev_to_mem, void *addr, | ^ drivers/gpu/drm/phytium/phytium_gem.c:181:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 181 | int phytium_dma_transfer(struct drm_device *drm_dev, int dev_to_mem, void *addr, | ^ | static 5 warnings generated. -- >> drivers/gpu/drm/phytium/phytium_fbdev.c:117:5: warning: no previous prototype for function 'phytium_drm_fbdev_init' [-Wmissing-prototypes] 117 | int phytium_drm_fbdev_init(struct drm_device *dev) | ^ drivers/gpu/drm/phytium/phytium_fbdev.c:117:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 117 | int phytium_drm_fbdev_init(struct drm_device *dev) | ^ | static >> drivers/gpu/drm/phytium/phytium_fbdev.c:139:6: warning: no previous prototype for function 'phytium_drm_fbdev_fini' [-Wmissing-prototypes] 139 | void phytium_drm_fbdev_fini(struct drm_device *dev) | ^ drivers/gpu/drm/phytium/phytium_fbdev.c:139:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 139 | void phytium_drm_fbdev_fini(struct drm_device *dev) | ^ | static 2 warnings generated. -- >> drivers/gpu/drm/phytium/phytium_debugfs.c:376:5: warning: no previous prototype for function 'phytium_debugfs_connector_add' [-Wmissing-prototypes] 376 | int phytium_debugfs_connector_add(struct drm_connector *connector) | ^ drivers/gpu/drm/phytium/phytium_debugfs.c:376:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 376 | int phytium_debugfs_connector_add(struct drm_connector *connector) | ^ | static >> drivers/gpu/drm/phytium/phytium_debugfs.c:438:5: warning: no previous prototype for function 'phytium_debugfs_display_register' [-Wmissing-prototypes] 438 | int phytium_debugfs_display_register(struct phytium_display_private *priv) | ^ drivers/gpu/drm/phytium/phytium_debugfs.c:438:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 438 | int phytium_debugfs_display_register(struct phytium_display_private *priv) | ^ | static 2 warnings generated. -- >> drivers/gpu/drm/phytium/px210_dp.c:852:6: warning: no previous prototype for function 'px210_dp_hw_spread_is_enable' [-Wmissing-prototypes] 852 | bool px210_dp_hw_spread_is_enable(struct phytium_dp_device *phytium_dp) | ^ drivers/gpu/drm/phytium/px210_dp.c:852:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 852 | bool px210_dp_hw_spread_is_enable(struct phytium_dp_device *phytium_dp) | ^ | static >> drivers/gpu/drm/phytium/px210_dp.c:864:5: warning: no previous prototype for function 'px210_dp_hw_reset' [-Wmissing-prototypes] 864 | int px210_dp_hw_reset(struct phytium_dp_device *phytium_dp) | ^ drivers/gpu/drm/phytium/px210_dp.c:864:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 864 | int px210_dp_hw_reset(struct phytium_dp_device *phytium_dp) | ^ | static >> drivers/gpu/drm/phytium/px210_dp.c:897:9: warning: no previous prototype for function 'px210_dp_hw_get_source_lane_count' [-Wmissing-prototypes] 897 | uint8_t px210_dp_hw_get_source_lane_count(struct phytium_dp_device *phytium_dp) | ^ drivers/gpu/drm/phytium/px210_dp.c:897:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 897 | uint8_t px210_dp_hw_get_source_lane_count(struct phytium_dp_device *phytium_dp) | ^ | static 3 warnings generated. .. vim +/phytium_plane_destroy +30 drivers/gpu/drm/phytium/phytium_plane.c 29 > 30 void phytium_plane_destroy(struct drm_plane *plane) 31 { 32 struct phytium_plane *phytium_plane = to_phytium_plane(plane); 33 34 drm_plane_cleanup(plane); 35 kfree(phytium_plane); 36 } 37 38 /** 39 * phytium_plane_atomic_get_property - fetch plane property value 40 * @plane: plane to fetch property for 41 * @state: state containing the property value 42 * @property: property to look up 43 * @val: pointer to write property value into 44 * 45 * The DRM core does not store shadow copies of properties for 46 * atomic-capable drivers. This entrypoint is used to fetch 47 * the current value of a driver-specific plane property. 48 */ 49 static int 50 phytium_plane_atomic_get_property(struct drm_plane *plane, 51 const struct drm_plane_state *state, 52 struct drm_property *property, 53 uint64_t *val) 54 { 55 DRM_DEBUG_KMS("Unknown plane property [PROP:%d:%s]\n", property->base.id, property->name); 56 return -EINVAL; 57 } 58 59 /** 60 * phytium_plane_atomic_set_property - set plane property value 61 * @plane: plane to set property for 62 * @state: state to update property value in 63 * @property: property to set 64 * @val: value to set property to 65 * 66 * Writes the specified property value for a plane into the provided atomic 67 * state object. 68 * 69 * Returns 0 on success, -EINVAL on unrecognized properties 70 */ 71 int > 72 phytium_plane_atomic_set_property(struct drm_plane *plane, 73 struct drm_plane_state *state, 74 struct drm_property *property, 75 uint64_t val) 76 { 77 DRM_DEBUG_KMS("Unknown plane property [PROP:%d:%s]\n", property->base.id, property->name); 78 return -EINVAL; 79 } 80 81 struct drm_plane_state * > 82 phytium_plane_atomic_duplicate_state(struct drm_plane *plane) 83 { 84 struct drm_plane_state *state = NULL; 85 struct phytium_plane_state *phytium_state = NULL; 86 87 phytium_state = kmemdup(plane->state, sizeof(*phytium_state), GFP_KERNEL); 88 89 if (!phytium_state) 90 return NULL; 91 92 state = &phytium_state->base; 93 if (state->fb) 94 drm_framebuffer_get(state->fb); 95 96 state->fence = NULL; 97 state->commit = NULL; 98 99 return state; 100 } 101 102 void > 103 phytium_plane_atomic_destroy_state(struct drm_plane *plane, struct drm_plane_state *state) 104 { 105 struct phytium_plane_state *phytium_state = to_phytium_plane_state(state); 106 107 __drm_atomic_helper_plane_destroy_state(state); 108 kfree(phytium_state); 109 } 110 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[PATCH OLK-6.6 0/3] reserve kabi space for some structures
by Li Lingfeng 06 Feb '24

06 Feb '24

Reserve kabi space for some structures in elevator/libata/libnvdimm. Li Lingfeng (3): elevator: reserve space for structures in elevator ata: libata: reserve space for structures in libata libnvdimm: reserve space for structures in libnvdimm block/elevator.h | 15 +++++++++++++++ include/linux/libata.h | 31 +++++++++++++++++++++++++++++++ include/linux/libnvdimm.h | 7 +++++++ include/linux/nd.h | 13 +++++++++++++ 4 files changed, 66 insertions(+) -- 2.31.1

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[PATCH openEuler-1.0-LTS 0/2] fix kprobe reenter bug
by Liu Chuang 06 Feb '24

06 Feb '24

Liu Chuang (1): arm64/openeuler_defconfig: add not set config to fix compiling error Masami Hiramatsu (1): tracing/kprobes: Do the notrace functions check without kprobes on ftrace arch/arm64/configs/openeuler_defconfig | 1 + kernel/trace/Kconfig | 2 +- kernel/trace/trace_kprobe.c | 2 +- 3 files changed, 3 insertions(+), 2 deletions(-) -- 2.34.1

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[PATCH OLK-5.10 00/16] ubi: fastmap: Optimize ubi wl algorithm to improve flash service life
by Zhihao Cheng 06 Feb '24

06 Feb '24

Christophe JAILLET (1): ubi: fastmap: Use the bitmap API to allocate bitmaps Jilin Yuan (1): ubi: Fix repeated words in comments Yang Li (1): ubi: Simplify bool conversion Zhihao Cheng (13): ubi: fastmap: Check wl_pool for free peb before wear leveling ubi: fastmap: Fix missed ec updating after erasing old fastmap data block ubi: fastmap: erase_block: Get erase counter from wl_entry rather than flash ubi: fastmap: Allocate memory with GFP_NOFS in ubi_update_fastmap ubi: Replace erase_block() with sync_erase() ubi: fastmap: Use free pebs reserved for bad block handling ubi: fastmap: Wait until there are enough free PEBs before filling pools ubi: fastmap: Remove unneeded break condition while filling pools ubi: fastmap: may_reserve_for_fm: Don't reserve PEB if fm_anchor exists ubi: fastmap: Get wl PEB even ec beyonds the 'max' if free PEBs are run out ubi: fastmap: Fix lapsed wear leveling for first 64 PEBs ubi: fastmap: Add module parameter to control reserving filling pool PEBs ubi: fastmap: Add control in 'UBI_IOCATT' ioctl to reserve PEBs for filling pools drivers/mtd/ubi/build.c | 25 +++++- drivers/mtd/ubi/cdev.c | 5 +- drivers/mtd/ubi/eba.c | 5 +- drivers/mtd/ubi/fastmap-wl.c | 160 ++++++++++++++++++++++++++++++----- drivers/mtd/ubi/fastmap.c | 74 +++------------- drivers/mtd/ubi/io.c | 2 +- drivers/mtd/ubi/ubi.h | 16 ++-- drivers/mtd/ubi/wl.c | 68 ++++++++++----- drivers/mtd/ubi/wl.h | 8 +- include/uapi/mtd/ubi-user.h | 4 +- 10 files changed, 240 insertions(+), 127 deletions(-) -- 2.31.1

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[PATCH V4 OLK-6.6 00/13] Backport vDPA migration support patches
by Jiang Dongxu 06 Feb '24

06 Feb '24

From: jiangdongxu <jiangdongxu1(a)huawei.com> Backport vDPA migration support patches merged on branch OLK-5.10 V4: add CONFIG_VHOST_VDPA_MIGRATION to control vdpa migration code compile or not. V3: fix compile error of kernel-6.6 new vdpa driver pds_vdpa V2: fix compile error of kernel-6.6 new vdpa driver vduse and snet_vdpa jiangdongxu (13): vdpa: add log operations vhost-vdpa: add uAPI for logging vdpa: add device state operations vhost-vdpa: add uAPI for device buffer vdpa: add vdpa device migration status ops vhost-vdpa: add uAPI for device migration status vhost: add VHOST feature VHOST_BACKEND_F_BYTEMAPLOG vhost-vdpa: Allow transparent MSI IOV vhost-vdpa: fix msi irq request err vhost-vdpa: allow set feature VHOST_F_LOG_ALL when been negotiated. vhost-vdpa: add reset state params to indicate reset level vdpa: add vmstate header file vdpa: add CONFIG_VHOST_VDPA_MIGRATION drivers/vdpa/ifcvf/ifcvf_main.c | 2 +- drivers/vdpa/mlx5/net/mlx5_vnet.c | 2 +- drivers/vdpa/pds/vdpa_dev.c | 2 +- drivers/vdpa/solidrun/snet_main.c | 2 +- drivers/vdpa/vdpa_sim/vdpa_sim.c | 2 +- drivers/vdpa/vdpa_user/vduse_dev.c | 2 +- drivers/vdpa/virtio_pci/vp_vdpa.c | 2 +- drivers/vhost/Kconfig | 11 ++ drivers/vhost/vdpa.c | 238 ++++++++++++++++++++++++++--- drivers/virtio/virtio_vdpa.c | 2 +- include/linux/vdpa.h | 56 ++++++- include/linux/vdpa_vmstate.h | 182 ++++++++++++++++++++++ include/uapi/linux/vhost.h | 12 ++ include/uapi/linux/vhost_types.h | 19 +++ 14 files changed, 503 insertions(+), 31 deletions(-) create mode 100644 include/linux/vdpa_vmstate.h -- 2.27.0

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