/****************************************************************************** * nmi.h * * NMI callback registration and reason codes. * * Copyright (c) 2005, Keir Fraser */ #ifndef __XEN_PUBLIC_NMI_H__ #define __XEN_PUBLIC_NMI_H__ #include /* * NMI reason codes: * Currently these are x86-specific, stored in arch_shared_info.nmi_reason. */ /* I/O-check error reported via ISA port 0x61, bit 6. */ #define _XEN_NMIREASON_io_error 0 #define XEN_NMIREASON_io_error (1UL << _XEN_NMIREASON_io_error) /* PCI SERR reported via ISA port 0x61, bit 7. */ #define _XEN_NMIREASON_pci_serr 1 #define XEN_NMIREASON_pci_serr (1UL << _XEN_NMIREASON_pci_serr) /* Unknown hardware-generated NMI. */ #define _XEN_NMIREASON_unknown 2 #define XEN_NMIREASON_unknown (1UL << _XEN_NMIREASON_unknown) /* * long nmi_op(unsigned int cmd, void *arg) * NB. All ops return zero on success, else a negative error code. */ /* * Register NMI callback for this (calling) VCPU. Currently this only makes * sense for domain 0, vcpu 0. All other callers will be returned EINVAL. * arg == pointer to xennmi_callback structure. */ #define XENNMI_register_callback 0 struct xennmi_callback { unsigned long handler_address; unsigned long pad; }; DEFINE_GUEST_HANDLE_STRUCT(xennmi_callback); /* * Deregister NMI callback for this (calling) VCPU. * arg == NULL. */ #define XENNMI_unregister_callback 1 #endif /* __XEN_PUBLIC_NMI_H__ */ ght'>Tobias Klauser
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authorTejun Heo <tj@kernel.org>2017-01-26 16:47:28 -0500
committerTejun Heo <tj@kernel.org>2017-01-26 16:47:28 -0500
commit07cd12945551b63ecb1a349d50a6d69d1d6feb4a (patch)
tree75f65eba7eac9277971082a2d5a4cf1370562c0c /include/uapi/sound/hdsp.h
parent7ce7d89f48834cefece7804d38fc5d85382edf77 (diff)
cgroup: don't online subsystems before cgroup_name/path() are operational
While refactoring cgroup creation, a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") incorrectly onlined subsystems before the new cgroup is associated with it kernfs_node. This is fine for cgroup proper but cgroup_name/path() depend on the associated kernfs_node and if a subsystem makes the new cgroup_subsys_state visible, which they're allowed to after onlining, it can lead to NULL dereference. The current code performs cgroup creation and subsystem onlining in cgroup_create() and cgroup_mkdir() makes the cgroup and subsystems visible afterwards. There's no reason to online the subsystems early and we can simply drop cgroup_apply_control_enable() call from cgroup_create() so that the subsystems are onlined and made visible at the same time. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Fixes: a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") Cc: stable@vger.kernel.org # v4.6+
Diffstat (limited to 'include/uapi/sound/hdsp.h')