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linux(4): wait4() returns ESRCH if pid is INT_MIN.

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Weird and undocumented patch was added to the Linux kernel in 2017,
fixes wait403 LTP test.

MFC after:	2 weeks

(cherry picked from commit 9103c5582a)
This commit is contained in:
Dmitry Chagin 2022-03-31 20:49:39 +03:00
parent 65d3f90d13
commit ccbef519e0
1 changed files with 4 additions and 0 deletions
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4
sys/compat/linux/linux_misc.c
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@ -1054,6 +1054,10 @@ linux_wait4(struct thread *td, struct linux_wait4_args *args)
LINUX_WCONTINUED | __WCLONE | __WNOTHREAD | __WALL))
return (EINVAL);
/* -INT_MIN is not defined. */
if (args->pid == INT_MIN)
return (ESRCH);
options = 0;
linux_to_bsd_waitopts(args->options, &options);