binder call fail caused by no address space

最新推荐文章于 2024-09-13 16:01:18 发布

kongxinsun

最新推荐文章于 2024-09-13 16:01:18 发布

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分类专栏： android 文章标签： android binder no-address

本文链接：https://blog.youkuaiyun.com/kongxinsun/article/details/78915044

background
debug
why delivered binder buffer not release
Summary

background

近期项目反馈开机log里有binder报错如下，开机后，就正常了。

[  264.315743@1] binder: 5591: binder_alloc_buf size 87696 failed, no address space
[  264.325729@1] binder: 5591: binder_alloc_buf size 87696 failed, no address space
[  264.337669@2] binder: 5591: binder_alloc_buf size 87696 failed, no address space
[  264.339720@3] binder: 5591: binder_alloc_buf size 87696 failed, no address space

no address space表明进程的binder buffer用完了。默认情况下每个进程的binder buffer是1MB，如果binder buffer耗尽，首先要怀疑binder buffer存在泄露。

frameworks/native/libs/binder/ProcessState.cpp

#define BINDER_VM_SIZE ((1 * 1024 * 1024) - sysconf(_SC_PAGE_SIZE) * 2)

但是开机后，就没有这样的log了。而且进程pid 5591的binder debugfs 节点也没有发现异常。所以这个case并不是binder buffer泄露。

root@MagicProjector_A1S:/ # cat d/binder/proc/5591                             
binder proc state:
proc 5591
  thread 5591: l 00
  thread 5619: l 12
  thread 5620: l 11
  thread 5675: l 00
  thread 5679: l 00
  thread 5684: l 00
  thread 6699: l 00
  thread 6702: l 00
  thread 6703: l 00
  thread 6707: l 00
  thread 6709: l 00
  thread 6710: l 00
  thread 6711: l 00
  thread 6712: l 00
  node 20090: u00000000ab058e38 c00000000ab058400 hs 1 hw 1 ls 0 lw 0 is 1 iw 1 proc 4097
  node 9884: u00000000ab06aa18 c00000000ab06a9f8 hs 1 hw 1 ls 0 lw 0 is 1 iw 1 proc 4097
  node 9903: u00000000ab06bc80 c00000000ab06bc60 hs 1 hw 1 ls 0 lw 0 is 1 iw 1 proc 4097
  node 10124: u00000000ab074850 c00000000ab07a0f0 hs 1 hw 1 ls 0 lw 0 is 1 iw 1 proc 4097
  node 20184: u00000000ab09a898 c00000000ab0ba730 hs 1 hw 1 ls 0 lw 0 is 1 iw 1 proc 4097
  node 20461: u00000000ab09b9a0 c00000000ab071b48 hs 1 hw 1 ls 0 lw 0 is 1 iw 1 proc 4097
  node 20753: u00000000ab0db840 c00000000ab0db820 hs 1 hw 1 ls 0 lw 0 is 1 iw 1 proc 4097
  node 22531: u00000000ab112368 c00000000ab106b70 hs 1 hw 1 ls 0 lw 0 is 1 iw 1 proc 4097
  ref 9879: desc 0 node 1 s 1 w 1 d           (null)
  ref 9882: desc 1 node 632 s 1 w 1 d           (null)
  ref 9887: desc 2 node 622 s 1 w 1 d           (null)
  ref 9888: desc 3 node 750 s 1 w 1 d           (null)
  ref 9889: desc 4 node 797 s 1 w 1 d           (null)
  ref 9897: desc 5 node 206 s 1 w 1 d           (null)
  ref 9910: desc 6 node 1037 s 1 w 1 d           (null)
  ref 9939: desc 7 node 993 s 1 w 1 d           (null)
  ref 10048: desc 8 node 1734 s 1 w 1 d           (null)
  ref 20096: desc 9 node 20095 s 1 w 1 d           (null)
  ref 10176: desc 10 node 1972 s 1 w 1 d ffffffc016dec9c0
  ref 10221: desc 11 node 1796 s 1 w 1 d           (null)
  ref 10223: desc 12 node 10222 s 1 w 1 d           (null)
  ref 10236: desc 13 node 700 s 1 w 0 d           (null)
  ref 20697: desc 14 node 200 s 1 w 1 d           (null)
  ref 20742: desc 15 node 951 s 1 w 1 d           (null)
  ref 20745: desc 16 node 5169 s 1 w 1 d ffffffc018c6b840
  ref 20931: desc 17 node 180 s 1 w 1 d ffffffc0198acbc0
  ref 20938: desc 18 node 1025 s 1 w 1 d           (null)
  ref 22529: desc 19 node 732 s 1 w 1 d           (null)
  ref 22534: desc 20 node 4956 s 1 w 1 d           (null)
  buffer 10235: ffffff8013f00050 size 24:8 delivered
  buffer 21121: ffffff8013f00708 size 216:0 delivered
  buffer 21268: ffffff8013f00830 size 8036:0 delivered
  buffer 21894: ffffff8013f027e8 size 216:0 delivered
  buffer 23215: ffffff8013f02910 size 7880:0 delivered
  buffer 23358: ffffff8013f04828 size 7880:0 delivered
  buffer 24206: