#define ALLOW_SELECT #undef NO_INLINE_ASM #define SHORT_BANNERS #define MANUAL_PNP #undef DO_TIMINGS #include #ifdef __KERNEL__ #include #include #include #include #include #include #include #include #include #include #include #include #include #endif #include #define FALSE 0 #define TRUE 1 extern int sound_alloc_dma(int chn, char *deviceID); extern int sound_open_dma(int chn, char *deviceID); extern void sound_free_dma(int chn); extern void sound_close_dma(int chn); extern void reprogram_timer(void); #define USE_AUTOINIT_DMA extern void *sound_mem_blocks[1024]; extern int sound_nblocks; #undef PSEUDO_DMA_AUTOINIT #define ALLOW_BUFFER_MAPPING extern const struct file_operations oss_sound_fops; net-next plumbingsTobias 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 /net/key/Makefile
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 'net/key/Makefile')