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Add support for ACPI device use physical node as pci device, to establish identity mapping
by LeoLiuoc 04 Jun '21

04 Jun '21

When using ACPI device to create identity mapping, if the physical node of the ACPI device is a pci device, domain_1 will be created for these two devices. But if the pci device and other pci devices belong to another domain_2, this will happen conflict and destroy another domain. Such as PCI devices under the PCIE-to-PCI bridge. Therefore, when the physical node of the ACPI device is a PCI device, this patch uses the PCI device to create the domain. In this way, there is only one domain. Signed-off-by: LeoLiu-oc <LeoLiu-oc(a)zhaoxin.com> --- drivers/iommu/intel-iommu.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index e111e5d6d269..cf0dc4c80183 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -2736,12 +2736,32 @@ static int domain_prepare_identity_map(struct device *dev, return iommu_domain_identity_map(domain, start, end); } +static struct device *acpi_dev_find_pci_dev(struct device *dev) +{ + struct acpi_device_physical_node *pn; + struct acpi_device *adev; + + if (dev->bus == &acpi_bus_type) { + adev = to_acpi_device(dev); + mutex_lock(&adev->physical_node_lock); + list_for_each_entry(pn, &adev->physical_node_list, node) { + if (dev_is_pci(pn->dev)) { + return pn->dev; + } + } + mutex_unlock(&adev->physical_node_lock); + } + + return dev; +} + static int iommu_prepare_identity_map(struct device *dev, unsigned long long start, unsigned long long end) { struct dmar_domain *domain; int ret; + dev = acpi_dev_find_pci_dev(dev); domain = get_domain_for_dev(dev, DEFAULT_DOMAIN_ADDRESS_WIDTH); if (!domain) -- 2.20.1

1 0

[PATCH kernel-4.19 1/5] bpf: add writable context for raw tracepoints
by Yang Yingliang 04 Jun '21

04 Jun '21

From: Matt Mullins <mmullins(a)fb.com> mainline inclusion from mainline-v5.2-rc1 commit 9df1c28bb75217b244257152ab7d788bb2a386d0 category: feature bugzilla: NA CVE: NA ------------------------------------------------------------------------- This is an opt-in interface that allows a tracepoint to provide a safe buffer that can be written from a BPF_PROG_TYPE_RAW_TRACEPOINT program. The size of the buffer must be a compile-time constant, and is checked before allowing a BPF program to attach to a tracepoint that uses this feature. The pointer to this buffer will be the first argument of tracepoints that opt in; the pointer is valid and can be bpf_probe_read() by both BPF_PROG_TYPE_RAW_TRACEPOINT and BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE programs that attach to such a tracepoint, but the buffer to which it points may only be written by the latter. Signed-off-by: Matt Mullins <mmullins(a)fb.com> Acked-by: Yonghong Song <yhs(a)fb.com> Signed-off-by: Alexei Starovoitov <ast(a)kernel.org> Conflict: include/linux/bpf.h include/uapi/linux/bpf.h kernel/bpf/verifier.c Signed-off-by: Yufen Yu <yuyufen(a)huawei.com> Reviewed-by: Hou Tao <houtao1(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- include/linux/bpf.h | 9 +++++++++ include/linux/bpf_types.h | 1 + include/linux/tracepoint-defs.h | 1 + include/trace/bpf_probe.h | 27 +++++++++++++++++++++++++-- include/uapi/linux/bpf.h | 3 +++ kernel/bpf/syscall.c | 8 ++++++-- kernel/bpf/verifier.c | 31 +++++++++++++++++++++++++++++++ kernel/trace/bpf_trace.c | 24 ++++++++++++++++++++++++ 8 files changed, 100 insertions(+), 4 deletions(-) diff --git a/include/linux/bpf.h b/include/linux/bpf.h index 685bbc0139add..2eed5ecdcdc75 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -214,6 +214,14 @@ enum bpf_reg_type { PTR_TO_PACKET_META, /* skb->data - meta_len */ PTR_TO_PACKET, /* reg points to skb->data */ PTR_TO_PACKET_END, /* skb->data + headlen */ + PTR_TO_FLOW_KEYS, /* reg points to bpf_flow_keys */ + PTR_TO_SOCKET, /* reg points to struct bpf_sock */ + PTR_TO_SOCKET_OR_NULL, /* reg points to struct bpf_sock or NULL */ + PTR_TO_SOCK_COMMON, /* reg points to sock_common */ + PTR_TO_SOCK_COMMON_OR_NULL, /* reg points to sock_common or NULL */ + PTR_TO_TCP_SOCK, /* reg points to struct tcp_sock */ + PTR_TO_TCP_SOCK_OR_NULL, /* reg points to struct tcp_sock or NULL */ + PTR_TO_TP_BUFFER, /* reg points to a writable raw tp's buffer */ }; /* The information passed from prog-specific *_is_valid_access @@ -285,6 +293,7 @@ struct bpf_prog_aux { atomic_t refcnt; u32 used_map_cnt; u32 max_ctx_offset; + u32 max_tp_access; u32 stack_depth; u32 id; u32 func_cnt; diff --git a/include/linux/bpf_types.h b/include/linux/bpf_types.h index b3f9156a519ab..b5b9196a30134 100644 --- a/include/linux/bpf_types.h +++ b/include/linux/bpf_types.h @@ -22,6 +22,7 @@ BPF_PROG_TYPE(BPF_PROG_TYPE_KPROBE, kprobe) BPF_PROG_TYPE(BPF_PROG_TYPE_TRACEPOINT, tracepoint) BPF_PROG_TYPE(BPF_PROG_TYPE_PERF_EVENT, perf_event) BPF_PROG_TYPE(BPF_PROG_TYPE_RAW_TRACEPOINT, raw_tracepoint) +BPF_PROG_TYPE(BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, raw_tracepoint_writable) #endif #ifdef CONFIG_CGROUP_BPF BPF_PROG_TYPE(BPF_PROG_TYPE_CGROUP_DEVICE, cg_dev) diff --git a/include/linux/tracepoint-defs.h b/include/linux/tracepoint-defs.h index 49ba9cde7e4bb..b29950a19205e 100644 --- a/include/linux/tracepoint-defs.h +++ b/include/linux/tracepoint-defs.h @@ -45,6 +45,7 @@ struct bpf_raw_event_map { struct tracepoint *tp; void *bpf_func; u32 num_args; + u32 writable_size; } __aligned(32); #endif diff --git a/include/trace/bpf_probe.h b/include/trace/bpf_probe.h index 505dae0bed80b..d6e556c0a0852 100644 --- a/include/trace/bpf_probe.h +++ b/include/trace/bpf_probe.h @@ -69,8 +69,7 @@ __bpf_trace_##call(void *__data, proto) \ * to make sure that if the tracepoint handling changes, the * bpf probe will fail to compile unless it too is updated. */ -#undef DEFINE_EVENT -#define DEFINE_EVENT(template, call, proto, args) \ +#define __DEFINE_EVENT(template, call, proto, args, size) \ static inline void bpf_test_probe_##call(void) \ { \ check_trace_callback_type_##call(__bpf_trace_##template); \ @@ -81,12 +80,36 @@ __bpf_trace_tp_map_##call = { \ .tp = &__tracepoint_##call, \ .bpf_func = (void *)__bpf_trace_##template, \ .num_args = COUNT_ARGS(args), \ + .writable_size = size, \ }; +#define FIRST(x, ...) x + +#undef DEFINE_EVENT_WRITABLE +#define DEFINE_EVENT_WRITABLE(template, call, proto, args, size) \ +static inline void bpf_test_buffer_##call(void) \ +{ \ + /* BUILD_BUG_ON() is ignored if the code is completely eliminated, but \ + * BUILD_BUG_ON_ZERO() uses a different mechanism that is not \ + * dead-code-eliminated. \ + */ \ + FIRST(proto); \ + (void)BUILD_BUG_ON_ZERO(size != sizeof(*FIRST(args))); \ +} \ +__DEFINE_EVENT(template, call, PARAMS(proto), PARAMS(args), size) + +#undef DEFINE_EVENT +#define DEFINE_EVENT(template, call, proto, args) \ + __DEFINE_EVENT(template, call, PARAMS(proto), PARAMS(args), 0) #undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) + +#undef DEFINE_EVENT_WRITABLE +#undef __DEFINE_EVENT +#undef FIRST + #endif /* CONFIG_BPF_EVENTS */ diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index 2bbae9e2786ea..b6ff566503d11 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -154,6 +154,9 @@ enum bpf_prog_type { BPF_PROG_TYPE_LWT_SEG6LOCAL, BPF_PROG_TYPE_LIRC_MODE2, BPF_PROG_TYPE_SK_REUSEPORT, + BPF_PROG_TYPE_FLOW_DISSECTOR, + BPF_PROG_TYPE_CGROUP_SYSCTL, + BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, }; enum bpf_attach_type { diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index fc0628d133166..116c8b32c5716 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -1578,12 +1578,16 @@ static int bpf_raw_tracepoint_open(const union bpf_attr *attr) } raw_tp->btp = btp; - prog = bpf_prog_get_type(attr->raw_tracepoint.prog_fd, - BPF_PROG_TYPE_RAW_TRACEPOINT); + prog = bpf_prog_get(attr->raw_tracepoint.prog_fd); if (IS_ERR(prog)) { err = PTR_ERR(prog); goto out_free_tp; } + if (prog->type != BPF_PROG_TYPE_RAW_TRACEPOINT && + prog->type != BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE) { + err = -EINVAL; + goto out_put_prog; + } err = bpf_probe_register(raw_tp->btp, prog); if (err) diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index b748ec3dd6ba0..623c50e19ece9 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -260,6 +260,7 @@ static const char * const reg_type_str[] = { [PTR_TO_PACKET] = "pkt", [PTR_TO_PACKET_META] = "pkt_meta", [PTR_TO_PACKET_END] = "pkt_end", + [PTR_TO_TP_BUFFER] = "tp_buffer", }; static char slot_type_char[] = { @@ -1590,6 +1591,32 @@ static int check_ctx_reg(struct bpf_verifier_env *env, return 0; } +static int check_tp_buffer_access(struct bpf_verifier_env *env, + const struct bpf_reg_state *reg, + int regno, int off, int size) +{ + if (off < 0) { + verbose(env, + "R%d invalid tracepoint buffer access: off=%d, size=%d", + regno, off, size); + return -EACCES; + } + if (!tnum_is_const(reg->var_off) || reg->var_off.value) { + char tn_buf[48]; + + tnum_strn(tn_buf, sizeof(tn_buf), reg->var_off); + verbose(env, + "R%d invalid variable buffer offset: off=%d, var_off=%s", + regno, off, tn_buf); + return -EACCES; + } + if (off + size > env->prog->aux->max_tp_access) + env->prog->aux->max_tp_access = off + size; + + return 0; +} + + /* truncate register to smaller size (in bytes) * must be called with size < BPF_REG_SIZE */ @@ -1709,6 +1736,10 @@ static int check_mem_access(struct bpf_verifier_env *env, int insn_idx, u32 regn err = check_packet_access(env, regno, off, size, false); if (!err && t == BPF_READ && value_regno >= 0) mark_reg_unknown(env, regs, value_regno); + } else if (reg->type == PTR_TO_TP_BUFFER) { + err = check_tp_buffer_access(env, reg, regno, off, size); + if (!err && t == BPF_READ && value_regno >= 0) + mark_reg_unknown(env, regs, value_regno); } else { verbose(env, "R%d invalid mem access '%s'\n", regno, reg_type_str[reg->type]); diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c index bb5e8b1922a62..b8726b8a46022 100644 --- a/kernel/trace/bpf_trace.c +++ b/kernel/trace/bpf_trace.c @@ -978,6 +978,27 @@ const struct bpf_verifier_ops raw_tracepoint_verifier_ops = { const struct bpf_prog_ops raw_tracepoint_prog_ops = { }; +static bool raw_tp_writable_prog_is_valid_access(int off, int size, + enum bpf_access_type type, + const struct bpf_prog *prog, + struct bpf_insn_access_aux *info) +{ + if (off == 0) { + if (size != sizeof(u64) || type != BPF_READ) + return false; + info->reg_type = PTR_TO_TP_BUFFER; + } + return raw_tp_prog_is_valid_access(off, size, type, prog, info); +} + +const struct bpf_verifier_ops raw_tracepoint_writable_verifier_ops = { + .get_func_proto = raw_tp_prog_func_proto, + .is_valid_access = raw_tp_writable_prog_is_valid_access, +}; + +const struct bpf_prog_ops raw_tracepoint_writable_prog_ops = { +}; + static bool pe_prog_is_valid_access(int off, int size, enum bpf_access_type type, const struct bpf_prog *prog, struct bpf_insn_access_aux *info) @@ -1267,6 +1288,9 @@ static int __bpf_probe_register(struct bpf_raw_event_map *btp, struct bpf_prog * if (prog->aux->max_ctx_offset > btp->num_args * sizeof(u64)) return -EINVAL; + if (prog->aux->max_tp_access > btp->writable_size) + return -EINVAL; + return tracepoint_probe_register(tp, (void *)btp->bpf_func, prog); } -- 2.25.1

1 4

[PATCH openEuler-1.0-LTS 1/4] bpf: add writable context for raw tracepoints
by Yang Yingliang 03 Jun '21

03 Jun '21

From: Matt Mullins <mmullins(a)fb.com> mainline inclusion from mainline-v5.2-rc1 commit 9df1c28bb75217b244257152ab7d788bb2a386d0 category: feature bugzilla: NA CVE: NA ------------------------------------------------------------------------- This is an opt-in interface that allows a tracepoint to provide a safe buffer that can be written from a BPF_PROG_TYPE_RAW_TRACEPOINT program. The size of the buffer must be a compile-time constant, and is checked before allowing a BPF program to attach to a tracepoint that uses this feature. The pointer to this buffer will be the first argument of tracepoints that opt in; the pointer is valid and can be bpf_probe_read() by both BPF_PROG_TYPE_RAW_TRACEPOINT and BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE programs that attach to such a tracepoint, but the buffer to which it points may only be written by the latter. Signed-off-by: Matt Mullins <mmullins(a)fb.com> Acked-by: Yonghong Song <yhs(a)fb.com> Signed-off-by: Alexei Starovoitov <ast(a)kernel.org> Conflict: include/linux/bpf.h include/uapi/linux/bpf.h kernel/bpf/verifier.c Signed-off-by: Yufen Yu <yuyufen(a)huawei.com> Reviewed-by: Hou Tao <houtao1(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- include/linux/bpf.h | 9 +++++++++ include/linux/bpf_types.h | 1 + include/linux/tracepoint-defs.h | 1 + include/trace/bpf_probe.h | 27 +++++++++++++++++++++++++-- include/uapi/linux/bpf.h | 3 +++ kernel/bpf/syscall.c | 8 ++++++-- kernel/bpf/verifier.c | 31 +++++++++++++++++++++++++++++++ kernel/trace/bpf_trace.c | 24 ++++++++++++++++++++++++ 8 files changed, 100 insertions(+), 4 deletions(-) diff --git a/include/linux/bpf.h b/include/linux/bpf.h index 16f6beef5cad7..5d2208b641f99 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -213,6 +213,14 @@ enum bpf_reg_type { PTR_TO_PACKET_META, /* skb->data - meta_len */ PTR_TO_PACKET, /* reg points to skb->data */ PTR_TO_PACKET_END, /* skb->data + headlen */ + PTR_TO_FLOW_KEYS, /* reg points to bpf_flow_keys */ + PTR_TO_SOCKET, /* reg points to struct bpf_sock */ + PTR_TO_SOCKET_OR_NULL, /* reg points to struct bpf_sock or NULL */ + PTR_TO_SOCK_COMMON, /* reg points to sock_common */ + PTR_TO_SOCK_COMMON_OR_NULL, /* reg points to sock_common or NULL */ + PTR_TO_TCP_SOCK, /* reg points to struct tcp_sock */ + PTR_TO_TCP_SOCK_OR_NULL, /* reg points to struct tcp_sock or NULL */ + PTR_TO_TP_BUFFER, /* reg points to a writable raw tp's buffer */ }; /* The information passed from prog-specific *_is_valid_access @@ -276,6 +284,7 @@ struct bpf_prog_aux { atomic_t refcnt; u32 used_map_cnt; u32 max_ctx_offset; + u32 max_tp_access; u32 stack_depth; u32 id; u32 func_cnt; diff --git a/include/linux/bpf_types.h b/include/linux/bpf_types.h index cd26c090e7c06..272ed2d3a8fc4 100644 --- a/include/linux/bpf_types.h +++ b/include/linux/bpf_types.h @@ -22,6 +22,7 @@ BPF_PROG_TYPE(BPF_PROG_TYPE_KPROBE, kprobe) BPF_PROG_TYPE(BPF_PROG_TYPE_TRACEPOINT, tracepoint) BPF_PROG_TYPE(BPF_PROG_TYPE_PERF_EVENT, perf_event) BPF_PROG_TYPE(BPF_PROG_TYPE_RAW_TRACEPOINT, raw_tracepoint) +BPF_PROG_TYPE(BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, raw_tracepoint_writable) #endif #ifdef CONFIG_CGROUP_BPF BPF_PROG_TYPE(BPF_PROG_TYPE_CGROUP_DEVICE, cg_dev) diff --git a/include/linux/tracepoint-defs.h b/include/linux/tracepoint-defs.h index 49ba9cde7e4bb..b29950a19205e 100644 --- a/include/linux/tracepoint-defs.h +++ b/include/linux/tracepoint-defs.h @@ -45,6 +45,7 @@ struct bpf_raw_event_map { struct tracepoint *tp; void *bpf_func; u32 num_args; + u32 writable_size; } __aligned(32); #endif diff --git a/include/trace/bpf_probe.h b/include/trace/bpf_probe.h index 505dae0bed80b..d6e556c0a0852 100644 --- a/include/trace/bpf_probe.h +++ b/include/trace/bpf_probe.h @@ -69,8 +69,7 @@ __bpf_trace_##call(void *__data, proto) \ * to make sure that if the tracepoint handling changes, the * bpf probe will fail to compile unless it too is updated. */ -#undef DEFINE_EVENT -#define DEFINE_EVENT(template, call, proto, args) \ +#define __DEFINE_EVENT(template, call, proto, args, size) \ static inline void bpf_test_probe_##call(void) \ { \ check_trace_callback_type_##call(__bpf_trace_##template); \ @@ -81,12 +80,36 @@ __bpf_trace_tp_map_##call = { \ .tp = &__tracepoint_##call, \ .bpf_func = (void *)__bpf_trace_##template, \ .num_args = COUNT_ARGS(args), \ + .writable_size = size, \ }; +#define FIRST(x, ...) x + +#undef DEFINE_EVENT_WRITABLE +#define DEFINE_EVENT_WRITABLE(template, call, proto, args, size) \ +static inline void bpf_test_buffer_##call(void) \ +{ \ + /* BUILD_BUG_ON() is ignored if the code is completely eliminated, but \ + * BUILD_BUG_ON_ZERO() uses a different mechanism that is not \ + * dead-code-eliminated. \ + */ \ + FIRST(proto); \ + (void)BUILD_BUG_ON_ZERO(size != sizeof(*FIRST(args))); \ +} \ +__DEFINE_EVENT(template, call, PARAMS(proto), PARAMS(args), size) + +#undef DEFINE_EVENT +#define DEFINE_EVENT(template, call, proto, args) \ + __DEFINE_EVENT(template, call, PARAMS(proto), PARAMS(args), 0) #undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) + +#undef DEFINE_EVENT_WRITABLE +#undef __DEFINE_EVENT +#undef FIRST + #endif /* CONFIG_BPF_EVENTS */ diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index 05228b70673be..261dafff64271 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -153,6 +153,9 @@ enum bpf_prog_type { BPF_PROG_TYPE_LWT_SEG6LOCAL, BPF_PROG_TYPE_LIRC_MODE2, BPF_PROG_TYPE_SK_REUSEPORT, + BPF_PROG_TYPE_FLOW_DISSECTOR, + BPF_PROG_TYPE_CGROUP_SYSCTL, + BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, }; enum bpf_attach_type { diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index 6a67eb6545d14..30253fb4254e4 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -1562,12 +1562,16 @@ static int bpf_raw_tracepoint_open(const union bpf_attr *attr) } raw_tp->btp = btp; - prog = bpf_prog_get_type(attr->raw_tracepoint.prog_fd, - BPF_PROG_TYPE_RAW_TRACEPOINT); + prog = bpf_prog_get(attr->raw_tracepoint.prog_fd); if (IS_ERR(prog)) { err = PTR_ERR(prog); goto out_free_tp; } + if (prog->type != BPF_PROG_TYPE_RAW_TRACEPOINT && + prog->type != BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE) { + err = -EINVAL; + goto out_put_prog; + } err = bpf_probe_register(raw_tp->btp, prog); if (err) diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index f535092079100..1efbf7e684fde 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -261,6 +261,7 @@ static const char * const reg_type_str[] = { [PTR_TO_PACKET] = "pkt", [PTR_TO_PACKET_META] = "pkt_meta", [PTR_TO_PACKET_END] = "pkt_end", + [PTR_TO_TP_BUFFER] = "tp_buffer", }; static void print_liveness(struct bpf_verifier_env *env, @@ -1678,6 +1679,32 @@ static int check_ctx_reg(struct bpf_verifier_env *env, return 0; } +static int check_tp_buffer_access(struct bpf_verifier_env *env, + const struct bpf_reg_state *reg, + int regno, int off, int size) +{ + if (off < 0) { + verbose(env, + "R%d invalid tracepoint buffer access: off=%d, size=%d", + regno, off, size); + return -EACCES; + } + if (!tnum_is_const(reg->var_off) || reg->var_off.value) { + char tn_buf[48]; + + tnum_strn(tn_buf, sizeof(tn_buf), reg->var_off); + verbose(env, + "R%d invalid variable buffer offset: off=%d, var_off=%s", + regno, off, tn_buf); + return -EACCES; + } + if (off + size > env->prog->aux->max_tp_access) + env->prog->aux->max_tp_access = off + size; + + return 0; +} + + /* truncate register to smaller size (in bytes) * must be called with size < BPF_REG_SIZE */ @@ -1797,6 +1824,10 @@ static int check_mem_access(struct bpf_verifier_env *env, int insn_idx, u32 regn err = check_packet_access(env, regno, off, size, false); if (!err && t == BPF_READ && value_regno >= 0) mark_reg_unknown(env, regs, value_regno); + } else if (reg->type == PTR_TO_TP_BUFFER) { + err = check_tp_buffer_access(env, reg, regno, off, size); + if (!err && t == BPF_READ && value_regno >= 0) + mark_reg_unknown(env, regs, value_regno); } else { verbose(env, "R%d invalid mem access '%s'\n", regno, reg_type_str[reg->type]); diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c index bb5e8b1922a62..b8726b8a46022 100644 --- a/kernel/trace/bpf_trace.c +++ b/kernel/trace/bpf_trace.c @@ -978,6 +978,27 @@ const struct bpf_verifier_ops raw_tracepoint_verifier_ops = { const struct bpf_prog_ops raw_tracepoint_prog_ops = { }; +static bool raw_tp_writable_prog_is_valid_access(int off, int size, + enum bpf_access_type type, + const struct bpf_prog *prog, + struct bpf_insn_access_aux *info) +{ + if (off == 0) { + if (size != sizeof(u64) || type != BPF_READ) + return false; + info->reg_type = PTR_TO_TP_BUFFER; + } + return raw_tp_prog_is_valid_access(off, size, type, prog, info); +} + +const struct bpf_verifier_ops raw_tracepoint_writable_verifier_ops = { + .get_func_proto = raw_tp_prog_func_proto, + .is_valid_access = raw_tp_writable_prog_is_valid_access, +}; + +const struct bpf_prog_ops raw_tracepoint_writable_prog_ops = { +}; + static bool pe_prog_is_valid_access(int off, int size, enum bpf_access_type type, const struct bpf_prog *prog, struct bpf_insn_access_aux *info) @@ -1267,6 +1288,9 @@ static int __bpf_probe_register(struct bpf_raw_event_map *btp, struct bpf_prog * if (prog->aux->max_ctx_offset > btp->num_args * sizeof(u64)) return -EINVAL; + if (prog->aux->max_tp_access > btp->writable_size) + return -EINVAL; + return tracepoint_probe_register(tp, (void *)btp->bpf_func, prog); } -- 2.25.1

1 3

[PATCH kernel-4.19] x86/tsc: Respect tsc command line paraemeter for clocksource_tsc_early
by Yang Yingliang 02 Jun '21

02 Jun '21

From: Michael Zhivich <mzhivich(a)akamai.com> mainline inclusion from mainline-v5.4-rc4 commit 63ec58b44fcc05efd1542045abd7faf056ac27d9 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I3T8ZP?from=project-issue CVE: NA -------------------------------- The introduction of clocksource_tsc_early broke the functionality of "tsc=reliable" and "tsc=nowatchdog" command line parameters, since clocksource_tsc_early is unconditionally registered with CLOCK_SOURCE_MUST_VERIFY and thus put on the watchdog list. This can cause the TSC to be declared unstable during boot: clocksource: timekeeping watchdog on CPU0: Marking clocksource 'tsc-early' as unstable because the skew is too large: clocksource: 'refined-jiffies' wd_now: fffb7018 wd_last: fffb6e9d mask: ffffffff clocksource: 'tsc-early' cs_now: 68a6a7070f6a0 cs_last: 68a69ab6f74d6 mask: ffffffffffffffff tsc: Marking TSC unstable due to clocksource watchdog The corresponding elapsed times are cs_nsec=1224152026 and wd_nsec=378942392, so the watchdog differs from TSC by 0.84 seconds. This happens when HPET is not available and jiffies are used as the TSC watchdog instead and the jiffies update is not happening due to lost timer interrupts in periodic mode, which can happen e.g. with expensive debug mechanisms enabled or under massive overload conditions in virtualized environments. Before the introduction of the early TSC clocksource the command line parameters "tsc=reliable" and "tsc=nowatchdog" could be used to work around this issue. Restore the behaviour by disabling the watchdog if requested on the kernel command line. [ tglx: Clarify changelog ] Fixes: aa83c45762a24 ("x86/tsc: Introduce early tsc clocksource") Signed-off-by: Michael Zhivich <mzhivich(a)akamai.com> Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> Link: https://lkml.kernel.org/r/20191024175945.14338-1-mzhivich@akamai.com [wangxiongfeng: remove 'no_tsc_watchdog' in the origin patch.] Signed-off-by: Xiongfeng Wang <wangxiongfeng2(a)huawei.com> Reviewed-by: Jian Cheng <cj.chengjian(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- arch/x86/kernel/tsc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index 03b7529333a67..b1ae78bdba50b 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -1483,6 +1483,9 @@ void __init tsc_init(void) return; } + if (tsc_clocksource_reliable) + clocksource_tsc_early.flags &= ~CLOCK_SOURCE_MUST_VERIFY; + clocksource_register_khz(&clocksource_tsc_early, tsc_khz); detect_art(); } -- 2.25.1

1 0

[PATCH openEuler-1.0-LTS 01/30] cpuidle: menu: Do not update last_state_idx in menu_select()
by Yang Yingliang 01 Jun '21

01 Jun '21

From: "Rafael J. Wysocki" <rafael.j.wysocki(a)intel.com> mainline inclusion from mainline-4.20 commit eb40a380bff28f84b6583bba6786b46ef26ef548 category: feature bugzilla: https://bugzilla.openeuler.org/show_bug.cgi?id=34 CVE: NA It is not necessary to update data->last_state_idx in menu_select() as it only is used in menu_update() which only runs when data->needs_update is set and that is set only when updating data->last_state_idx in menu_reflect(). Accordingly, drop the update of data->last_state_idx from menu_select() and get rid of the (now redundant) "out" label from it. No intentional behavior changes. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> Signed-off-by: Yubo Miao <miaoyubo(a)huawei.com> Signed-off-by: Xiangyou Xie <xiexiangyou(a)huawei.com> Reviewed-by: Hailiang Zhang <zhang.zhanghailiang(a)huawei.com> Reviewed-by: Hanjun Guo <guohanjun(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> Signed-off-by: Jiajun Chen <chenjiajun8(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- drivers/cpuidle/governors/menu.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c index ff0ebec40f859..3a48e4e1c175d 100644 --- a/drivers/cpuidle/governors/menu.c +++ b/drivers/cpuidle/governors/menu.c @@ -403,7 +403,7 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev, s->target_residency <= ktime_to_us(delta_next)) idx = i; - goto out; + return idx; } if (s->exit_latency > latency_req) { /* @@ -450,10 +450,7 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev, } } -out: - data->last_state_idx = idx; - - return data->last_state_idx; + return idx; } /** -- 2.25.1

1 29

[PATCH kernel-4.19 1/3] bpf: Wrap aux data inside bpf_sanitize_info container
by Yang Yingliang 01 Jun '21

01 Jun '21

From: Daniel Borkmann <daniel(a)iogearbox.net> mainline inclusion from mainline-v5.13-rc4 commit 3d0220f6861d713213b015b582e9f21e5b28d2e0 category: bugfix bugzilla: NA CVE: CVE-2021-33200 -------------------------------- Add a container structure struct bpf_sanitize_info which holds the current aux info, and update call-sites to sanitize_ptr_alu() to pass it in. This is needed for passing in additional state later on. Signed-off-by: Daniel Borkmann <daniel(a)iogearbox.net> Reviewed-by: Piotr Krysiuk <piotras(a)gmail.com> Acked-by: Alexei Starovoitov <ast(a)kernel.org> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> Reviewed-by: Kuohai Xu <xukuohai(a)huawei.com> Reviewed-by: Xiu Jianfeng <xiujianfeng(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- kernel/bpf/verifier.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index df67ba7c4b736..bfd813ac8c806 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -2815,15 +2815,19 @@ static bool sanitize_needed(u8 opcode) return opcode == BPF_ADD || opcode == BPF_SUB; } +struct bpf_sanitize_info { + struct bpf_insn_aux_data aux; +}; + static int sanitize_ptr_alu(struct bpf_verifier_env *env, struct bpf_insn *insn, const struct bpf_reg_state *ptr_reg, const struct bpf_reg_state *off_reg, struct bpf_reg_state *dst_reg, - struct bpf_insn_aux_data *tmp_aux, + struct bpf_sanitize_info *info, const bool commit_window) { - struct bpf_insn_aux_data *aux = commit_window ? cur_aux(env) : tmp_aux; + struct bpf_insn_aux_data *aux = commit_window ? cur_aux(env) : &info->aux; struct bpf_verifier_state *vstate = env->cur_state; bool off_is_imm = tnum_is_const(off_reg->var_off); bool off_is_neg = off_reg->smin_value < 0; @@ -2852,8 +2856,8 @@ static int sanitize_ptr_alu(struct bpf_verifier_env *env, /* In commit phase we narrow the masking window based on * the observed pointer move after the simulated operation. */ - alu_state = tmp_aux->alu_state; - alu_limit = abs(tmp_aux->alu_limit - alu_limit); + alu_state = info->aux.alu_state; + alu_limit = abs(info->aux.alu_limit - alu_limit); } else { alu_state = off_is_neg ? BPF_ALU_NEG_VALUE : 0; alu_state |= off_is_imm ? BPF_ALU_IMMEDIATE : 0; @@ -3014,7 +3018,7 @@ static int adjust_ptr_min_max_vals(struct bpf_verifier_env *env, smin_ptr = ptr_reg->smin_value, smax_ptr = ptr_reg->smax_value; u64 umin_val = off_reg->umin_value, umax_val = off_reg->umax_value, umin_ptr = ptr_reg->umin_value, umax_ptr = ptr_reg->umax_value; - struct bpf_insn_aux_data tmp_aux = {}; + struct bpf_sanitize_info info = {}; u8 opcode = BPF_OP(insn->code); u32 dst = insn->dst_reg; int ret; @@ -3066,7 +3070,7 @@ static int adjust_ptr_min_max_vals(struct bpf_verifier_env *env, if (sanitize_needed(opcode)) { ret = sanitize_ptr_alu(env, insn, ptr_reg, off_reg, dst_reg, - &tmp_aux, false); + &info, false); if (ret < 0) return sanitize_err(env, insn, ret, off_reg, dst_reg); } @@ -3208,7 +3212,7 @@ static int adjust_ptr_min_max_vals(struct bpf_verifier_env *env, return -EACCES; if (sanitize_needed(opcode)) { ret = sanitize_ptr_alu(env, insn, dst_reg, off_reg, dst_reg, - &tmp_aux, true); + &info, true); if (ret < 0) return sanitize_err(env, insn, ret, off_reg, dst_reg); } -- 2.25.1

1 2

[PATCH kernel-4.19] ata: ahci: Disable SXS for Hisilicon Kunpeng920
by Yang Yingliang 31 May '21

31 May '21

From: Xingui Yang <yangxingui(a)huawei.com> mainline inclusion from mainline-v5.12-rc6 commit 234e6d2c18f5 category: bugfix bugzilla: NA CVE: NA On Hisilicon Kunpeng920, ESP is set to 1 by default for all ports of SATA controller. In some scenarios, some ports are not external SATA ports, and it cause disks connected to these ports to be identified as removable disks. So disable the SXS capability on the software side to prevent users from mistakenly considering non-removable disks as removable disks and performing related operations. Signed-off-by: Xingui Yang <yangxingui(a)huawei.com> Signed-off-by: Luo Jiaxing <luojiaxing(a)huawei.com> Reviewed-by: John Garry <john.garry(a)huawei.com> Link: https://lore.kernel.org/r/1615544676-61926-1-git-send-email-luojiaxing@huaw… Signed-off-by: Jens Axboe <axboe(a)kernel.dk> Signed-off-by: Yang Xingui <yangxingui(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- drivers/ata/ahci.c | 5 +++++ drivers/ata/ahci.h | 1 + drivers/ata/libahci.c | 5 +++++ 3 files changed, 11 insertions(+) diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 8df0ec85cc7b9..bfb4c7a677717 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -1761,6 +1761,11 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) hpriv->flags |= AHCI_HFLAG_NO_DEVSLP; #ifdef CONFIG_ARM64 + if (pdev->vendor == PCI_VENDOR_ID_HUAWEI && + pdev->device == 0xa235 && + pdev->revision < 0x30) + hpriv->flags |= AHCI_HFLAG_NO_SXS; + if (pdev->vendor == 0x177d && pdev->device == 0xa01c) hpriv->irq_handler = ahci_thunderx_irq_handler; #endif diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h index 9290e787abdc4..52d0851653e5f 100644 --- a/drivers/ata/ahci.h +++ b/drivers/ata/ahci.h @@ -254,6 +254,7 @@ enum { AHCI_HFLAG_IS_MOBILE = (1 << 25), /* mobile chipset, use SATA_MOBILE_LPM_POLICY as default lpm_policy */ + AHCI_HFLAG_NO_SXS = (1 << 28), /* SXS not supported */ /* ap->flags bits */ diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c index 4577f76e736bf..faead87546106 100644 --- a/drivers/ata/libahci.c +++ b/drivers/ata/libahci.c @@ -509,6 +509,11 @@ void ahci_save_initial_config(struct device *dev, struct ahci_host_priv *hpriv) cap |= HOST_CAP_ALPM; } + if ((cap & HOST_CAP_SXS) && (hpriv->flags & AHCI_HFLAG_NO_SXS)) { + dev_info(dev, "controller does not support SXS, disabling CAP_SXS\n"); + cap &= ~HOST_CAP_SXS; + } + if (hpriv->force_port_map && port_map != hpriv->force_port_map) { dev_info(dev, "forcing port_map 0x%x -> 0x%x\n", port_map, hpriv->force_port_map); -- 2.25.1

1 0

[PATCH kernel-4.19 1/6] NFS: Refactor nfs_instantiate() for dentry referencing callers
by Yang Yingliang 31 May '21

31 May '21

From: Benjamin Coddington <bcodding(a)redhat.com> mainline inclusion from mainline-v5.4-rc1 commit 406cd91533dcc5e82ef2373c39e6a531d944131e category: bugfix bugzilla: NA CVE: NA -------------------------------- Since commit b0c6108ecf64 ("nfs_instantiate(): prevent multiple aliases for directory inode"), nfs_instantiate() may succeed without actually instantiating the dentry that was passed in. That can be problematic for some callers in NFSv3, so this patch breaks things up so we can get the actual dentry obtained. Signed-off-by: Benjamin Coddington <bcodding(a)redhat.com> Signed-off-by: Anna Schumaker <Anna.Schumaker(a)Netapp.com> Signed-off-by: Zhang Xiaoxu <zhangxiaoxu5(a)huawei.com> Reviewed-by: Zhang Yi <yi.zhang(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- fs/nfs/dir.c | 41 +++++++++++++++++++++++++++-------------- include/linux/nfs_fs.h | 3 +++ 2 files changed, 30 insertions(+), 14 deletions(-) diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 733fd9e4f0a15..0252d9af03e81 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1692,24 +1692,23 @@ static int nfs4_lookup_revalidate(struct dentry *dentry, unsigned int flags) #endif /* CONFIG_NFSV4 */ -/* - * Code common to create, mkdir, and mknod. - */ -int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fhandle, +struct dentry * +nfs_add_or_obtain(struct dentry *dentry, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label) { struct dentry *parent = dget_parent(dentry); struct inode *dir = d_inode(parent); struct inode *inode; - struct dentry *d; - int error = -EACCES; + struct dentry *d = NULL; + int error; d_drop(dentry); /* We may have been initialized further down */ if (d_really_is_positive(dentry)) goto out; + if (fhandle->size == 0) { error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr, NULL); if (error) @@ -1725,18 +1724,32 @@ int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fhandle, } inode = nfs_fhget(dentry->d_sb, fhandle, fattr, label); d = d_splice_alias(inode, dentry); - if (IS_ERR(d)) { - error = PTR_ERR(d); - goto out_error; - } - dput(d); out: dput(parent); - return 0; + return d; out_error: nfs_mark_for_revalidate(dir); - dput(parent); - return error; + d = ERR_PTR(error); + goto out; +} +EXPORT_SYMBOL_GPL(nfs_add_or_obtain); + +/* + * Code common to create, mkdir, and mknod. + */ +int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fhandle, + struct nfs_fattr *fattr, + struct nfs4_label *label) +{ + struct dentry *d; + + d = nfs_add_or_obtain(dentry, fhandle, fattr, label); + if (IS_ERR(d)) + return PTR_ERR(d); + + /* Callers don't care */ + dput(d); + return 0; } EXPORT_SYMBOL_GPL(nfs_instantiate); diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index 620306b1604d7..dcf01bdcc3e3b 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -487,6 +487,9 @@ extern const struct file_operations nfs_dir_operations; extern const struct dentry_operations nfs_dentry_operations; extern void nfs_force_lookup_revalidate(struct inode *dir); +extern struct dentry *nfs_add_or_obtain(struct dentry *dentry, + struct nfs_fh *fh, struct nfs_fattr *fattr, + struct nfs4_label *label); extern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, struct nfs_fattr *fattr, struct nfs4_label *label); extern int nfs_may_open(struct inode *inode, struct rpc_cred *cred, int openflags); -- 2.25.1

1 5

[PATCH kernel-4.19 00/50] backport linux-4.19.192
by Yang Yingliang 29 May '21

29 May '21

Anirudh Rayabharam (3): rapidio: handle create_workqueue() failure net: stmicro: handle clk_prepare() failure during init video: hgafb: correctly handle card detect failure during probe Atul Gopinathan (1): cdrom: gdrom: deallocate struct gdrom_unit fields in remove_gdrom Christophe JAILLET (1): openrisc: Fix a memory leak Dan Carpenter (1): firmware: arm_scpi: Prevent the ternary sign expansion bug Daniel Wagner (1): nvmet: seset ns->file when open fails Du Cheng (1): ethernet: sun: niu: fix missing checks of niu_pci_eeprom_read() Greg Kroah-Hartman (18): Revert "ALSA: sb8: add a check for request_region" Revert "rapidio: fix a NULL pointer dereference when create_workqueue() fails" Revert "serial: mvebu-uart: Fix to avoid a potential NULL pointer dereference" Revert "video: hgafb: fix potential NULL pointer dereference" Revert "net: stmicro: fix a missing check of clk_prepare" Revert "leds: lp5523: fix a missing check of return value of lp55xx_read" Revert "hwmon: (lm80) fix a missing check of bus read in lm80 probe" Revert "video: imsttfb: fix potential NULL pointer dereferences" Revert "ecryptfs: replace BUG_ON with error handling code" Revert "scsi: ufs: fix a missing check of devm_reset_control_get" Revert "gdrom: fix a memory leak bug" cdrom: gdrom: initialize global variable at init time Revert "media: rcar_drif: fix a memory disclosure" Revert "rtlwifi: fix a potential NULL pointer dereference" Revert "qlcnic: Avoid potential NULL pointer dereference" Revert "niu: fix missing checks of niu_pci_eeprom_read" net: rtlwifi: properly check for alloc_workqueue() failure Linux 4.19.192 Hans de Goede (1): platform/x86: dell-smbios-wmi: Fix oops on rmmod dell_smbios Hui Wang (1): ALSA: hda/realtek: reset eapd coeff to default value for alc287 Igor Matheus Andrade Torrente (1): video: hgafb: fix potential NULL pointer dereference Jan Beulich (1): xen-pciback: reconfigure also from backend watch handler Leon Romanovsky (1): RDMA/rxe: Clear all QP fields if creation failed Luiz Augusto von Dentz (1): Bluetooth: SMP: Fail if remote and local public keys are identical Maciej W. Rozycki (2): vgacon: Record video mode changes with VT_RESIZEX vt: Fix character height handling with VT_RESIZEX Maor Gottlieb (1): RDMA/mlx5: Recover from fatal event in dual port mode Mikulas Patocka (1): dm snapshot: fix crash with transient storage and zero chunk size Oleg Nesterov (1): ptrace: make ptrace() fail if the tracee changed its pid unexpectedly PeiSen Hou (1): ALSA: hda/realtek: Add some CLOVE SSIDs of ALC293 Phillip Potter (2): scsi: ufs: handle cleanup correctly on devm_reset_control_get error leds: lp5523: check return value of lp5xx_read and jump to cleanup code Ronnie Sahlberg (1): cifs: fix memory leak in smb2_copychunk_range Takashi Iwai (2): ALSA: line6: Fix racy initialization of LINE6 MIDI ALSA: usb-audio: Validate MS endpoint descriptors Takashi Sakamoto (3): ALSA: dice: fix stream format for TC Electronic Konnekt Live at high sampling transfer frequency ALSA: dice: fix stream format at middle sampling rate for Alesis iO 26 ALSA: bebob/oxfw: fix Kconfig entry for Mackie d.2 Pro Tetsuo Handa (1): tty: vt: always invoke vc->vc_sw->con_resize callback Tom Seewald (1): qlcnic: Add null check after calling netdev_alloc_skb Zhen Lei (1): scsi: qla2xxx: Fix error return code in qla82xx_write_flash_dword() Zqiang (1): locking/mutex: clear MUTEX_FLAGS if wait_list is empty due to signal Makefile | 2 +- arch/openrisc/kernel/setup.c | 2 + drivers/cdrom/gdrom.c | 13 ++++- drivers/firmware/arm_scpi.c | 4 +- drivers/hwmon/lm80.c | 11 +--- drivers/infiniband/hw/mlx5/main.c | 1 + drivers/infiniband/sw/rxe/rxe_qp.c | 7 +++ drivers/leds/leds-lp5523.c | 2 +- drivers/md/dm-snap.c | 1 + drivers/media/platform/rcar_drif.c | 1 - .../ethernet/qlogic/qlcnic/qlcnic_ethtool.c | 3 +- .../net/ethernet/stmicro/stmmac/dwmac-sunxi.c | 8 +-- drivers/net/ethernet/sun/niu.c | 32 +++++++---- drivers/net/wireless/realtek/rtlwifi/base.c | 19 +++---- drivers/nvme/target/io-cmd-file.c | 8 ++- drivers/platform/x86/dell-smbios-wmi.c | 3 +- drivers/rapidio/rio_cm.c | 17 +++--- drivers/scsi/qla2xxx/qla_nx.c | 3 +- drivers/scsi/ufs/ufs-hisi.c | 15 +++-- drivers/tty/serial/mvebu-uart.c | 3 - drivers/tty/vt/vt.c | 2 +- drivers/tty/vt/vt_ioctl.c | 6 +- drivers/video/console/vgacon.c | 56 +++++++++++-------- drivers/video/fbdev/core/fbcon.c | 2 +- drivers/video/fbdev/hgafb.c | 21 ++++--- drivers/video/fbdev/imsttfb.c | 5 -- drivers/xen/xen-pciback/xenbus.c | 22 ++++++-- fs/cifs/smb2ops.c | 2 + fs/ecryptfs/crypto.c | 6 +- include/linux/console_struct.h | 1 + kernel/locking/mutex-debug.c | 4 +- kernel/locking/mutex-debug.h | 2 +- kernel/locking/mutex.c | 18 ++++-- kernel/locking/mutex.h | 4 +- kernel/ptrace.c | 18 +++++- net/bluetooth/smp.c | 9 +++ sound/firewire/Kconfig | 4 +- sound/firewire/bebob/bebob.c | 2 +- sound/firewire/dice/dice-alesis.c | 2 +- sound/firewire/dice/dice-tcelectronic.c | 4 +- sound/firewire/oxfw/oxfw.c | 1 - sound/isa/sb/sb8.c | 4 -- sound/pci/hda/patch_realtek.c | 20 ++++++- sound/usb/line6/driver.c | 4 ++ sound/usb/line6/pod.c | 5 -- sound/usb/line6/variax.c | 6 -- sound/usb/midi.c | 4 ++ 47 files changed, 236 insertions(+), 153 deletions(-) -- 2.25.1

1 50

[PATCH kernel-4.19 1/5] Revert "mm: memcontrol: fix slub memory accounting"
by Yang Yingliang 29 May '21

29 May '21

hulk inclusion category: bugfix bugzilla: 51349 CVE: NA ------------------------------------------------- This patchset https://patchwork.kernel.org/project/linux-block/cover/20190826111627.7505-… will cause perfmance regression, so revert it and use another way to fix the warning introduced by fix CVE-2021-27365. Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> Reviewed-by: Kefeng Wang <wangkefeng.wang(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- mm/slab_common.c | 4 ++-- mm/slub.c | 8 ++++---- 2 files changed, 6 insertions(+), 6 deletions(-) diff --git a/mm/slab_common.c b/mm/slab_common.c index b8b0df81bece3..321a9abed5d9d 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -1259,8 +1259,8 @@ void *kmalloc_order(size_t size, gfp_t flags, unsigned int order) page = alloc_pages(flags, order); if (likely(page)) { ret = page_address(page); - mod_lruvec_page_state(page, NR_SLAB_UNRECLAIMABLE, - PAGE_SIZE << order); + mod_node_page_state(page_pgdat(page), NR_SLAB_UNRECLAIMABLE, + 1 << order); } kmemleak_alloc(ret, size, 1, flags); kasan_kmalloc_large(ret, size, flags); diff --git a/mm/slub.c b/mm/slub.c index 12f23ceab1177..0d69d5b3ceefe 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -3799,8 +3799,8 @@ static void *kmalloc_large_node(size_t size, gfp_t flags, int node) page = alloc_pages_node(node, flags, order); if (page) { ptr = page_address(page); - mod_lruvec_page_state(page, NR_SLAB_UNRECLAIMABLE, - PAGE_SIZE << order); + mod_node_page_state(page_pgdat(page), NR_SLAB_UNRECLAIMABLE, + 1 << order); } kmalloc_large_node_hook(ptr, size, flags); @@ -3940,8 +3940,8 @@ void kfree(const void *x) BUG_ON(!PageCompound(page)); kfree_hook(object); - mod_lruvec_page_state(page, NR_SLAB_UNRECLAIMABLE, - -(PAGE_SIZE << order)); + mod_node_page_state(page_pgdat(page), NR_SLAB_UNRECLAIMABLE, + -(1 << order)); __free_pages(page, order); return; } -- 2.25.1

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