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[PATCH OLK-6.6 0/9] kabi reserve
by Yu Liao 31 Jan '24

31 Jan '24

kabi reserve Yu Liao (9): kabi: reserve space for kobject related structures kabi: reserve space for hrtimer related structures kabi: reserve space for posix clock related structure kabi: reserve space for workqueue subsystem related structure kabi: reserve space for struct ptp_clock_info kabi: reserve space for struct timer_list kabi: reserve space for struct worker kabi: reserve space for struct clocksource kabi: reserve space for struct vdso_image arch/x86/include/asm/vdso.h | 6 ++++++ include/linux/clocksource.h | 6 ++++++ include/linux/hrtimer.h | 10 ++++++++++ include/linux/kobject.h | 16 ++++++++++++++++ include/linux/posix-clock.h | 11 +++++++++++ include/linux/ptp_clock_kernel.h | 6 ++++++ include/linux/timer.h | 4 ++++ include/linux/workqueue.h | 11 +++++++++++ kernel/workqueue_internal.h | 6 ++++++ 9 files changed, 76 insertions(+) -- 2.33.0

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[PATCH] openeuler_defconfig: enable CONFIG_PAGE_CACHE_LIMIT
by Ze Zuo 31 Jan '24

31 Jan '24

hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8NIKC -------------------------------- Enable CONFIG_PAGE_CACHE_LIMIT for x86, arm64 by default. Signed-off-by: Ze Zuo <zuoze1(a)huawei.com> --- arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + 2 files changed, 2 insertions(+) diff --git a/arch/arm64/configs/openeuler_defconfig b/arch/arm64/configs/openeuler_defconfig index 65f98be3c022..de34576dfff8 100644 --- a/arch/arm64/configs/openeuler_defconfig +++ b/arch/arm64/configs/openeuler_defconfig @@ -1152,6 +1152,7 @@ CONFIG_LRU_GEN=y CONFIG_ARCH_SUPPORTS_PER_VMA_LOCK=y CONFIG_PER_VMA_LOCK=y CONFIG_LOCK_MM_AND_FIND_VMA=y +CONFIG_PAGE_CACHE_LIMIT=y CONFIG_MEMORY_RELIABLE=y CONFIG_DYNAMIC_POOL=y CONFIG_ETMEM_SCAN=m diff --git a/arch/x86/configs/openeuler_defconfig b/arch/x86/configs/openeuler_defconfig index eb05c3a9dd24..6c0f4b70b340 100644 --- a/arch/x86/configs/openeuler_defconfig +++ b/arch/x86/configs/openeuler_defconfig @@ -1168,6 +1168,7 @@ CONFIG_LRU_GEN=y CONFIG_ARCH_SUPPORTS_PER_VMA_LOCK=y CONFIG_PER_VMA_LOCK=y CONFIG_LOCK_MM_AND_FIND_VMA=y +CONFIG_PAGE_CACHE_LIMIT=y CONFIG_DYNAMIC_POOL=y CONFIG_ETMEM_SCAN=m CONFIG_ETMEM_SWAP=m -- 2.25.1

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[PATCH OLK-6.6 1/1] kabi:dma:add kabi reserve for dma_map_ops structure
by Ze Zuo 31 Jan '24

31 Jan '24

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8ZYKD --------------------------- Reserve space for dma_map_ops on dma-map-ops.h. Sgned-off-by: Ze Zuo <zuoze1(a)huawe.com> --- include/linux/dma-map-ops.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/dma-map-ops.h b/include/linux/dma-map-ops.h index f2fc203fb8a1..a37e85e7a5c6 100644 --- a/include/linux/dma-map-ops.h +++ b/include/linux/dma-map-ops.h @@ -82,6 +82,12 @@ struct dma_map_ops { size_t (*max_mapping_size)(struct device *dev); size_t (*opt_mapping_size)(void); unsigned long (*get_merge_boundary)(struct device *dev); + KABI_RESERVE(1) + KABI_RESERVE(2) + KABI_RESERVE(3) + KABI_RESERVE(4) + KABI_RESERVE(5) + KABI_RESERVE(6) }; #ifdef CONFIG_DMA_OPS -- 2.25.1

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[PATCH v4 OLK-6.6 00/21] kabi reserve patches
by Lin Yujun 31 Jan '24

31 Jan '24

*** BLURB HERE *** Chen Jiahao (1): KABI: reserve space for struct input_dev Jialin Zhang (1): kabi: reserve space for power management related structure Lin Ruizhe (5): msi: Add kabi_reserve in msi.h interrupt: Add kabi_reserve in interrupt.h irq: Add kabi_reserve in irq irq_desc: Add kabi_reserve in irq_desc irqdomain: Add kabi_reserve in irqdomain Lin Yujun (13): drm: drm_atomic.h: Add kabi_reserve drm: drm_client.h: Add kabi_reserve drm: drm_connector.h: Add kabi_reserve drm: drm_crtc.h: Add kabi_reserve drm: drm_device.h: Add kabi_reserve drm: drm_drv.h: Add kabi_reserve drm: drm_fb_helper.h: Add kabi_reserve drm: drm_file.h: Add kabi_reserve drm: drm_fourcc.h: Add kabi_reserve drm: drm_gem.h: Add kabi_reserve pm: pm_domain.h: Add kabi_reserve pm: pm.h: Add kabi_reserve energy_model: Add kabi_reserve Yang Yingliang (1): kabi: reserve space for struct cpu_stop_work include/drm/drm_atomic.h | 6 ++++++ include/drm/drm_client.h | 7 +++++++ include/drm/drm_connector.h | 18 ++++++++++++++++++ include/drm/drm_crtc.h | 7 +++++++ include/drm/drm_device.h | 4 ++++ include/drm/drm_drv.h | 5 +++++ include/drm/drm_fb_helper.h | 8 ++++++++ include/drm/drm_file.h | 8 ++++++++ include/drm/drm_fourcc.h | 5 +++++ include/drm/drm_gem.h | 8 ++++++++ include/linux/energy_model.h | 5 +++++ include/linux/input.h | 4 ++++ include/linux/interrupt.h | 6 ++++++ include/linux/irq.h | 8 ++++++++ include/linux/irqdesc.h | 4 +++- include/linux/irqdomain.h | 3 +++ include/linux/msi.h | 7 +++++++ include/linux/pm.h | 14 ++++++++++++++ include/linux/pm_domain.h | 10 ++++++++++ include/linux/pm_qos.h | 7 +++++++ include/linux/pm_wakeup.h | 4 ++++ include/linux/stop_machine.h | 3 +++ 22 files changed, 150 insertions(+), 1 deletion(-) -- 2.34.1

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[PATCH openEuler-1.0-LTS] mm/filemap: avoid buffered read/write race to read inconsistent data
by Baokun Li 31 Jan '24

31 Jan '24

mainline inclusion from mainline-v6.7-rc8 commit e2c27b803bb664748e090d99042ac128b3f88d92 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I8RRAT Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- The following concurrency may cause the data read to be inconsistent with the data on disk: cpu1 cpu2 ------------------------------|------------------------------ // Buffered write 2048 from 0 ext4_buffered_write_iter generic_perform_write copy_page_from_iter_atomic ext4_da_write_end ext4_da_do_write_end block_write_end __block_commit_write folio_mark_uptodate // Buffered read 4096 from 0 smp_wmb() ext4_file_read_iter set_bit(PG_uptodate, folio_flags) generic_file_read_iter i_size_write // 2048 filemap_read unlock_page(page) filemap_get_pages filemap_get_read_batch folio_test_uptodate(folio) ret = test_bit(PG_uptodate, folio_flags) if (ret) smp_rmb(); // Ensure that the data in page 0-2048 is up-to-date. // New buffered write 2048 from 2048 ext4_buffered_write_iter generic_perform_write copy_page_from_iter_atomic ext4_da_write_end ext4_da_do_write_end block_write_end __block_commit_write folio_mark_uptodate smp_wmb() set_bit(PG_uptodate, folio_flags) i_size_write // 4096 unlock_page(page) isize = i_size_read(inode) // 4096 // Read the latest isize 4096, but without smp_rmb(), there may be // Load-Load disorder resulting in the data in the 2048-4096 range // in the page is not up-to-date. copy_page_to_iter // copyout 4096 In the concurrency above, we read the updated i_size, but there is no read barrier to ensure that the data in the page is the same as the i_size at this point, so we may copy the unsynchronized page out. Hence adding the missing read memory barrier to fix this. This is a Load-Load reordering issue, which only occurs on some weak mem-ordering architectures (e.g. ARM64, ALPHA), but not on strong mem-ordering architectures (e.g. X86). And theoretically the problem doesn't only happen on ext4, filesystems that call filemap_read() but don't hold inode lock (e.g. btrfs, f2fs, ubifs ...) will have this problem, while filesystems with inode lock (e.g. xfs, nfs) won't have this problem. Link: https://lkml.kernel.org/r/20231213062324.739009-1-libaokun1@huawei.com Signed-off-by: Baokun Li <libaokun1(a)huawei.com> Reviewed-by: Jan Kara <jack(a)suse.cz> Cc: Andreas Dilger <adilger.kernel(a)dilger.ca> Cc: Christoph Hellwig <hch(a)infradead.org> Cc: Dave Chinner <david(a)fromorbit.com> Cc: Matthew Wilcox (Oracle) <willy(a)infradead.org> Cc: Ritesh Harjani (IBM) <ritesh.list(a)gmail.com> Cc: Theodore Ts'o <tytso(a)mit.edu> Cc: yangerkun <yangerkun(a)huawei.com> Cc: Yu Kuai <yukuai3(a)huawei.com> Cc: Zhang Yi <yi.zhang(a)huawei.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Conflicts: mm/filemap.c Signed-off-by: Baokun Li <libaokun1(a)huawei.com> --- mm/filemap.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/mm/filemap.c b/mm/filemap.c index 5bf4645256cb..ecf8bed4c76f 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -2273,6 +2273,15 @@ static ssize_t generic_file_buffered_read(struct kiocb *iocb, } nr = nr - offset; + /* + * Pairs with a barrier in + * block_write_end()->mark_buffer_dirty() or other page + * dirtying routines like iomap_write_end() to ensure + * changes to page contents are visible before we see + * increased inode size. + */ + smp_rmb(); + /* If users can be writing to this page using arbitrary * virtual addresses, take care about potential aliasing * before reading the page on the kernel side. -- 2.31.1

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[PATCH OLK-6.6] net/kabi: reserve space for net related structures
by Wang Yufen 31 Jan '24

31 Jan '24

hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I903T2 -------------------------------- Signed-off-by: Wang Yufen <wangyufen(a)huawei.com> --- include/linux/inetdevice.h | 2 ++ include/net/if_inet6.h | 8 ++++++++ include/net/netns/sctp.h | 2 ++ include/net/sock_reuseport.h | 2 ++ include/rdma/ib_verbs.h | 12 ++++++++++++ 5 files changed, 26 insertions(+) diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h index 5181993..aa816f5 100644 --- a/include/linux/inetdevice.h +++ b/include/linux/inetdevice.h @@ -163,6 +163,8 @@ struct in_ifaddr { __u32 ifa_preferred_lft; unsigned long ifa_cstamp; /* created timestamp */ unsigned long ifa_tstamp; /* updated timestamp */ + KABI_RESERVE(1) + KABI_RESERVE(2) }; struct in_validator_info { diff --git a/include/net/if_inet6.h b/include/net/if_inet6.h index c849072..1199310 100644 --- a/include/net/if_inet6.h +++ b/include/net/if_inet6.h @@ -111,6 +111,8 @@ struct ip6_sf_list { unsigned char sf_oldin; /* change state */ unsigned char sf_crcount; /* retrans. left to send */ struct rcu_head rcu; + KABI_RESERVE(1) + KABI_RESERVE(2) }; #define MAF_TIMER_RUNNING 0x01 @@ -135,6 +137,10 @@ struct ifmcaddr6 { unsigned long mca_cstamp; unsigned long mca_tstamp; struct rcu_head rcu; + KABI_RESERVE(1) + KABI_RESERVE(2) + KABI_RESERVE(3) + KABI_RESERVE(4) }; /* Anycast stuff */ @@ -223,6 +229,8 @@ struct inet6_dev { struct rcu_head rcu; unsigned int ra_mtu; + KABI_RESERVE(1) + KABI_RESERVE(2) }; static inline void ipv6_eth_mc_map(const struct in6_addr *addr, char *buf) diff --git a/include/net/netns/sctp.h b/include/net/netns/sctp.h index 7eff3d9..b812c1b 100644 --- a/include/net/netns/sctp.h +++ b/include/net/netns/sctp.h @@ -179,6 +179,8 @@ struct netns_sctp { #ifdef CONFIG_NET_L3_MASTER_DEV int l3mdev_accept; #endif + KABI_RESERVE(1) + KABI_RESERVE(2) }; #endif /* __NETNS_SCTP_H__ */ diff --git a/include/net/sock_reuseport.h b/include/net/sock_reuseport.h index 6ec140b..9458cc5 100644 --- a/include/net/sock_reuseport.h +++ b/include/net/sock_reuseport.h @@ -26,6 +26,8 @@ struct sock_reuseport { unsigned int bind_inany:1; unsigned int has_conns:1; struct bpf_prog __rcu *prog; /* optional BPF sock selector */ + KABI_RESERVE(1) + KABI_RESERVE(2) struct sock *socks[]; /* array of sock pointers */ }; diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 62f9d12..3e006a7 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -450,6 +450,8 @@ struct ib_device_attr { u64 max_dm_size; /* Max entries for sgl for optimized performance per READ */ u32 max_sgl_rd; + KABI_RESERVE(1) + KABI_RESERVE(2) }; enum ib_mtu { @@ -608,6 +610,8 @@ struct rdma_hw_stats { unsigned long *is_disabled; int num_counters; u64 value[]; + KABI_RESERVE(1) + KABI_RESERVE(2) }; #define RDMA_HW_STATS_DEFAULT_LIFESPAN 10 @@ -1642,6 +1646,8 @@ struct ib_srq { * Implementation details of the RDMA core, don't use in drivers: */ struct rdma_restrack_entry res; + KABI_RESERVE(1) + KABI_RESERVE(2) }; enum ib_raw_packet_caps { @@ -2217,6 +2223,8 @@ struct ib_port_data { struct hlist_node ndev_hash_link; struct rdma_port_counter port_counter; struct ib_port *sysfs; + KABI_RESERVE(1) + KABI_RESERVE(2) }; /* rdma netdev type - specifies protocol type */ @@ -2684,6 +2692,8 @@ struct ib_device_ops { DECLARE_RDMA_OBJ_SIZE(ib_srq); DECLARE_RDMA_OBJ_SIZE(ib_ucontext); DECLARE_RDMA_OBJ_SIZE(ib_xrcd); + KABI_RESERVE(1) + KABI_RESERVE(2) }; struct ib_core_device { @@ -2784,6 +2794,8 @@ struct ib_device { char iw_ifname[IFNAMSIZ]; u32 iw_driver_flags; u32 lag_flags; + KABI_RESERVE(1) + KABI_RESERVE(2) }; static inline void *rdma_zalloc_obj(struct ib_device *dev, size_t size, -- 1.8.3.1

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[PATCH OLK-6.6] net/kabi: reserve space for net related structures
by Wang Yufen 31 Jan '24

31 Jan '24

hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I903T2 -------------------------------- Signed-off-by: Wang Yufen <wangyufen(a)huawei.com> --- include/linux/inetdevice.h | 4 ++++ include/net/if_inet6.h | 8 ++++++++ include/net/netns/sctp.h | 2 ++ include/net/sock_reuseport.h | 2 ++ include/rdma/ib_verbs.h | 12 ++++++++++++ 5 files changed, 28 insertions(+) diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h index ddb27fc..19b3677 100644 --- a/include/linux/inetdevice.h +++ b/include/linux/inetdevice.h @@ -50,6 +50,8 @@ struct in_device { struct neigh_parms *arp_parms; struct ipv4_devconf cnf; struct rcu_head rcu_head; + KABI_RESERVE(1) + KABI_RESERVE(2) }; #define IPV4_DEVCONF(cnf, attr) ((cnf).data[IPV4_DEVCONF_ ## attr - 1]) @@ -159,6 +161,8 @@ struct in_ifaddr { __u32 ifa_preferred_lft; unsigned long ifa_cstamp; /* created timestamp */ unsigned long ifa_tstamp; /* updated timestamp */ + KABI_RESERVE(1) + KABI_RESERVE(2) }; struct in_validator_info { diff --git a/include/net/if_inet6.h b/include/net/if_inet6.h index c849072..1199310 100644 --- a/include/net/if_inet6.h +++ b/include/net/if_inet6.h @@ -111,6 +111,8 @@ struct ip6_sf_list { unsigned char sf_oldin; /* change state */ unsigned char sf_crcount; /* retrans. left to send */ struct rcu_head rcu; + KABI_RESERVE(1) + KABI_RESERVE(2) }; #define MAF_TIMER_RUNNING 0x01 @@ -135,6 +137,10 @@ struct ifmcaddr6 { unsigned long mca_cstamp; unsigned long mca_tstamp; struct rcu_head rcu; + KABI_RESERVE(1) + KABI_RESERVE(2) + KABI_RESERVE(3) + KABI_RESERVE(4) }; /* Anycast stuff */ @@ -223,6 +229,8 @@ struct inet6_dev { struct rcu_head rcu; unsigned int ra_mtu; + KABI_RESERVE(1) + KABI_RESERVE(2) }; static inline void ipv6_eth_mc_map(const struct in6_addr *addr, char *buf) diff --git a/include/net/netns/sctp.h b/include/net/netns/sctp.h index 7eff3d9..b812c1b 100644 --- a/include/net/netns/sctp.h +++ b/include/net/netns/sctp.h @@ -179,6 +179,8 @@ struct netns_sctp { #ifdef CONFIG_NET_L3_MASTER_DEV int l3mdev_accept; #endif + KABI_RESERVE(1) + KABI_RESERVE(2) }; #endif /* __NETNS_SCTP_H__ */ diff --git a/include/net/sock_reuseport.h b/include/net/sock_reuseport.h index 6ec140b..9458cc5 100644 --- a/include/net/sock_reuseport.h +++ b/include/net/sock_reuseport.h @@ -26,6 +26,8 @@ struct sock_reuseport { unsigned int bind_inany:1; unsigned int has_conns:1; struct bpf_prog __rcu *prog; /* optional BPF sock selector */ + KABI_RESERVE(1) + KABI_RESERVE(2) struct sock *socks[]; /* array of sock pointers */ }; diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 62f9d12..3e006a7 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -450,6 +450,8 @@ struct ib_device_attr { u64 max_dm_size; /* Max entries for sgl for optimized performance per READ */ u32 max_sgl_rd; + KABI_RESERVE(1) + KABI_RESERVE(2) }; enum ib_mtu { @@ -608,6 +610,8 @@ struct rdma_hw_stats { unsigned long *is_disabled; int num_counters; u64 value[]; + KABI_RESERVE(1) + KABI_RESERVE(2) }; #define RDMA_HW_STATS_DEFAULT_LIFESPAN 10 @@ -1642,6 +1646,8 @@ struct ib_srq { * Implementation details of the RDMA core, don't use in drivers: */ struct rdma_restrack_entry res; + KABI_RESERVE(1) + KABI_RESERVE(2) }; enum ib_raw_packet_caps { @@ -2217,6 +2223,8 @@ struct ib_port_data { struct hlist_node ndev_hash_link; struct rdma_port_counter port_counter; struct ib_port *sysfs; + KABI_RESERVE(1) + KABI_RESERVE(2) }; /* rdma netdev type - specifies protocol type */ @@ -2684,6 +2692,8 @@ struct ib_device_ops { DECLARE_RDMA_OBJ_SIZE(ib_srq); DECLARE_RDMA_OBJ_SIZE(ib_ucontext); DECLARE_RDMA_OBJ_SIZE(ib_xrcd); + KABI_RESERVE(1) + KABI_RESERVE(2) }; struct ib_core_device { @@ -2784,6 +2794,8 @@ struct ib_device { char iw_ifname[IFNAMSIZ]; u32 iw_driver_flags; u32 lag_flags; + KABI_RESERVE(1) + KABI_RESERVE(2) }; static inline void *rdma_zalloc_obj(struct ib_device *dev, size_t size, -- 1.8.3.1

1 0

[PATCH OLK-6.6] vfs: reserve kabi space for vfs related structures
by Zhihao Cheng 31 Jan '24

31 Jan '24

hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I900QB CVE: NA -------------------------------- struture size reserves address_space_operations 160 4 address_space 200 7 inode 624 2 file_lock_operations 16 2 lock_manager_operations 24 1 super_block 1392 2 Signed-off-by: Zhihao Cheng <chengzhihao1(a)huawei.com> --- include/linux/filelock.h | 5 +++++ include/linux/fs.h | 19 +++++++++++++++++++ 2 files changed, 24 insertions(+) diff --git a/include/linux/filelock.h b/include/linux/filelock.h index 95e868e09e29..92795ed425d9 100644 --- a/include/linux/filelock.h +++ b/include/linux/filelock.h @@ -31,6 +31,9 @@ struct file_lock; struct file_lock_operations { void (*fl_copy_lock)(struct file_lock *, struct file_lock *); void (*fl_release_private)(struct file_lock *); + + KABI_RESERVE(1) + KABI_RESERVE(2) }; struct lock_manager_operations { @@ -45,6 +48,8 @@ struct lock_manager_operations { bool (*lm_breaker_owns_lease)(struct file_lock *); bool (*lm_lock_expirable)(struct file_lock *cfl); void (*lm_expire_lock)(void); + + KABI_RESERVE(1) }; struct lock_manager { diff --git a/include/linux/fs.h b/include/linux/fs.h index cc34619424cf..daf7221fbdc3 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -451,6 +451,11 @@ struct address_space_operations { sector_t *span); void (*swap_deactivate)(struct file *file); int (*swap_rw)(struct kiocb *iocb, struct iov_iter *iter); + + KABI_RESERVE(1) + KABI_RESERVE(2) + KABI_RESERVE(3) + KABI_RESERVE(4) }; extern const struct address_space_operations empty_aops; @@ -497,6 +502,14 @@ struct address_space { spinlock_t private_lock; struct list_head private_list; void *private_data; + + KABI_RESERVE(1) + KABI_RESERVE(2) + KABI_RESERVE(3) + KABI_RESERVE(4) + KABI_RESERVE(5) + KABI_RESERVE(6) + KABI_RESERVE(7) } __attribute__((aligned(sizeof(long)))) __randomize_layout; /* * On most architectures that alignment is already the case; but @@ -756,6 +769,9 @@ struct inode { #endif void *i_private; /* fs or device private pointer */ + + KABI_RESERVE(1) + KABI_RESERVE(2) } __randomize_layout; struct timespec64 timestamp_truncate(struct timespec64 t, struct inode *inode); @@ -1328,6 +1344,9 @@ struct super_block { spinlock_t s_inode_wblist_lock; struct list_head s_inodes_wb; /* writeback inodes */ + + KABI_RESERVE(1) + KABI_RESERVE(2) } __randomize_layout; static inline struct user_namespace *i_user_ns(const struct inode *inode) -- 2.31.1

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[PATCH OLK-6.6 0/1] misc:fix compiling warning
by Chen Ridong 31 Jan '24

31 Jan '24

*** BLURB HERE *** Chen Ridong (1): misc: fix compiling waring kernel/cgroup/misc.c | 5 +++++ 1 file changed, 5 insertions(+) -- 2.34.1

1 0

[openeuler:OLK-5.10 5032/30000] arch/x86/include/asm/paravirt.h:204:9: sparse: sparse: cast truncates bits from constant value (10000000f becomes f)
by kernel test robot 31 Jan '24

31 Jan '24

tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 7b3b2702f031a1a8368468aef621f12b23241185 commit: 824e3bf903140e215a2d4c8165ba0e3ced22548e [5032/30000] x86/perf: Add uncore performance monitor support for Zhaoxin CPUs :::::: branch date: 11 hours ago :::::: commit date: 2 years, 6 months ago config: x86_64-randconfig-122-20240130 (attached as .config) compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18) reproduce (this is a W=1 build): (attached as reproduce) 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/202401310228.wuZdscKx-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) arch/x86/events/zhaoxin/uncore.c: note: in included file (through arch/x86/include/asm/msr.h, arch/x86/include/asm/processor.h, arch/x86/include/asm/cpu_device_id.h): >> arch/x86/include/asm/paravirt.h:204:9: sparse: sparse: cast truncates bits from constant value (10000000f becomes f) vim +204 arch/x86/include/asm/paravirt.h d3561b7fa0fb0fc include/asm-i386/paravirt.h Rusty Russell 2006-12-07 201 47edb65178cb705 arch/x86/include/asm/paravirt.h Andy Lutomirski 2015-07-23 202 static inline void wrmsrl(unsigned msr, u64 val) 47edb65178cb705 arch/x86/include/asm/paravirt.h Andy Lutomirski 2015-07-23 203 { 47edb65178cb705 arch/x86/include/asm/paravirt.h Andy Lutomirski 2015-07-23 @204 wrmsr(msr, (u32)val, (u32)(val>>32)); 47edb65178cb705 arch/x86/include/asm/paravirt.h Andy Lutomirski 2015-07-23 205 } 47edb65178cb705 arch/x86/include/asm/paravirt.h Andy Lutomirski 2015-07-23 206 :::::: The code at line 204 was first introduced by commit :::::: 47edb65178cb7056c2eea0b6c41a7d8c84547192 x86/asm/msr: Make wrmsrl() a function :::::: TO: Andy Lutomirski <luto(a)kernel.org> :::::: CC: Ingo Molnar <mingo(a)kernel.org> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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