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author | Rich Felker <dalias@aerifal.cx> | 2020-03-13 16:27:10 -0400 |
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committer | Rich Felker <dalias@aerifal.cx> | 2020-03-14 21:23:37 -0400 |
commit | 2b2c8aafce9d80f9d58652643538f4d58e82b856 (patch) | |
tree | 12fe8c1190cef866cf469777ca00fd3b7252a072 /arch/powerpc64/bits | |
parent | 5db475f0b987bfa7935a117aac81e14a98de34fb (diff) | |
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fix corrupt sysvipc timestamps on 32-bit archs with old kernels
kernel commit 4693916846269d633a3664586650dbfac2c5562f (first included
in release v4.14) silently fixed a bug whereby the reserved space
(which was later used for high bits of time) in IPC_STAT structures
was left untouched rather than zeroed. this means that a caller that
wants to read the high bits needs to pre-zero the memory.
since it's not clear that these operations are permitted to modify the
destination buffer on failure, use a temp buffer and copy back to the
caller's buffer on success.
Diffstat (limited to 'arch/powerpc64/bits')
0 files changed, 0 insertions, 0 deletions