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ANDROID: vendor_hooks: Add hook in mmap_region()

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Add hook in mmap_region() to record the vma and address information
of monitored processes.

Bug: 198385827
Change-Id: I0bde29113b47ca7f4a9f5d42a54188e791ca3b7e
Signed-off-by: Jiewen Wang <jiewen.wang@vivo.com>
This commit is contained in:
Jiewen Wang 2021-09-06 16:50:35 +08:00
parent b0778aaff4
commit 878e0caa77
3 changed files with 6 additions and 0 deletions
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1
drivers/android/vendor_hooks.c
View File

@ -381,3 +381,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_udp_recvmsg);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_tcp_recvmsg_stat); EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_tcp_recvmsg_stat);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_pci_d3_sleep); EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_pci_d3_sleep);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_kmalloc_slab); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_kmalloc_slab);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mmap_region);

3
include/trace/hooks/mm.h
View File

@ -120,6 +120,9 @@ DECLARE_HOOK(android_vh_mem_cgroup_css_offline,
DECLARE_HOOK(android_vh_kmalloc_slab, DECLARE_HOOK(android_vh_kmalloc_slab,
TP_PROTO(unsigned int index, gfp_t flags, struct kmem_cache **s), TP_PROTO(unsigned int index, gfp_t flags, struct kmem_cache **s),
TP_ARGS(index, flags, s)); TP_ARGS(index, flags, s));
DECLARE_HOOK(android_vh_mmap_region,
TP_PROTO(struct vm_area_struct *vma, unsigned long addr),
TP_ARGS(vma, addr));
/* macro versions of hooks are no longer required */ /* macro versions of hooks are no longer required */
#endif /* _TRACE_HOOK_MM_H */ #endif /* _TRACE_HOOK_MM_H */

2
mm/mmap.c
View File

@ -1964,6 +1964,8 @@ unsigned long mmap_region(struct file *file, unsigned long addr,
vma_set_page_prot(vma); vma_set_page_prot(vma);
vm_write_end(vma); vm_write_end(vma);
trace_android_vh_mmap_region(vma, addr);
return addr; return addr;
unmap_and_free_vma: unmap_and_free_vma: