[issue47245] Subprocess with vfork() is broken

Марк Коренберг added the comment: Solution: https://github.com/bminor/glibc/blob/master/sysdeps/unix/sysv/linux/spawni.c#L309 In short - do not use vfork(). Use clone(CLONE_VM | CLONE_VFORK). and do something with stack. -- ___ Python tracker

[issue47245] Subprocess with vfork() is broken

Марк Коренберг added the comment: https://github.com/python/cpython/blob/4a08c4c469d36f99d3a5e0f17ad82ab35dcf2835/Modules/_posixsubprocess.c#L717 child_exec(exec_array, argv, envp, cwd, p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite, errpipe_read, errp

[issue47245] Subprocess with vfork() is broken

Марк Коренберг added the comment: Rewriting in a way that guarantee no stack (and heap) usage. Because stack is shared between child and parent. It seems there is no crossplatform way. Happily we can use some code like I wrote by link in the first message. OR, stick to posix_nspawn which is c

[issue47245] Subprocess with vfork() is broken

New submission from Марк Коренберг : Using vfork in #35823 is VERY tricky. Please comment out vfork() usage for now. Yes, we can (should) use vfork(), but we have to rewrite the child code. https://bugzilla.kernel.org/show_bug.cgi?id=215813 I would say it's URGENT. -- components: Exte