Linux before 4.9 (and before 3.16.57) failed to account for the existing size of a pipe before checking system resource limits and would return EPERM in that case.
https://80x24.org/mirrors/linux.git/commit?id=b0b91d18e2e97b741b294af9333824ecc3fadfd8 https://lore.kernel.org/lkml/?q=s%3A%22fix+limit+checking+in+pipe_set_size%22 Based on a patch by Stephen Demjanenko for unicorn: https://bogomips.org/unicorn-public/[email protected]/ --- lib/yahns/worker.rb | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/lib/yahns/worker.rb b/lib/yahns/worker.rb index 0355629..ec5be23 100644 --- a/lib/yahns/worker.rb +++ b/lib/yahns/worker.rb @@ -14,8 +14,8 @@ def initialize(nr) # F_SETPIPE_SZ = 1031, PAGE_SIZE = 4096 # (fcntl will handle minimum size on platforms where PAGE_SIZE > 4096) @to_io.fcntl(1031, 4096) - rescue Errno::EINVAL - # old kernel + rescue SystemCallError + # old kernel (EINVAL, EPERM) end if RUBY_PLATFORM =~ /\blinux\b/ end -- EW -- unsubscribe: [email protected] archive: https://yhbt.net/yahns-public/
