* [lkp] [+573 bytes kernel size regression] [i386-tinyconfig] [0a51692d49] open: introduce openat2(2) syscall
@ 2020-01-09 20:08 kbuild test robot
0 siblings, 0 replies; only message in thread
From: kbuild test robot @ 2020-01-09 20:08 UTC (permalink / raw)
To: kbuild-all
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FYI, we noticed a +573 bytes kernel size regression due to commit:
commit: 0a51692d49ecc15b0d8ceb54540b413c267b9b11 (open: introduce openat2(2) syscall)
https://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git for-next
Details as below (size data is obtained by `nm --size-sort vmlinux`):
ab87f9a5: namei: LOOKUP_{IN_ROOT,BENEATH}: permit limited ".." resolution
0a51692d: open: introduce openat2(2) syscall
+-----------------------+----------+----------+-------+
| symbol | ab87f9a5 | 0a51692d | delta |
+-----------------------+----------+----------+-------+
| bzImage | 440240 | 440496 | 256 |
| nm.t.build_open_flags | 214 | 349 | 135 |
| nm.T.__se_sys_openat2 | 0 | 122 | 122 |
| nm.T.sys_openat2 | 0 | 122 | 122 |
| nm.t.do_sys_openat2 | 0 | 116 | 116 |
| nm.t.build_open_how | 0 | 78 | 78 |
| nm.T.file_open_name | 41 | 73 | 32 |
| nm.T.file_open_root | 52 | 84 | 32 |
| nm.D.sys_call_table | 1744 | 1752 | 8 |
| nm.T.__se_sys_openat | 26 | 23 | -3 |
| nm.T.sys_openat | 26 | 23 | -3 |
| nm.T.__se_sys_open | 27 | 24 | -3 |
| nm.T.sys_open | 27 | 24 | -3 |
| nm.T.do_sys_open | 121 | 61 | -60 |
+-----------------------+----------+----------+-------+
Thanks,
Kbuild test robot
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2020-01-09 20:08 [lkp] [+573 bytes kernel size regression] [i386-tinyconfig] [0a51692d49] open: introduce openat2(2) syscall kbuild test robot
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