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linux: implement set_cloned_tls() on arm64

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This fixes random segfaults on "git commit --amend".

Sponsored By:	EPSRC
Differential Revision:	https://reviews.freebsd.org/D30508
This commit is contained in:
Edward Tomasz Napierala 2021-06-16 09:34:06 +00:00
parent e505c3066b
commit a397b55083
1 changed files with 4 additions and 4 deletions
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8
sys/arm64/linux/linux_machdep.c
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@ -55,7 +55,6 @@ LIN_SDT_PROVIDER_DECLARE(LINUX_DTRACE);
LIN_SDT_PROBE_DEFINE0(machdep, linux_mmap2, todo);
LIN_SDT_PROBE_DEFINE0(machdep, linux_rt_sigsuspend, todo);
LIN_SDT_PROBE_DEFINE0(machdep, linux_sigaltstack, todo);
LIN_SDT_PROBE_DEFINE0(machdep, linux_set_cloned_tls, todo);
/*
* LINUXTODO: deduplicate; linux_execve is common across archs, except that on
@ -141,11 +140,12 @@ linux_sigaltstack(struct thread *td, struct linux_sigaltstack_args *uap)
return (EDOOFUS);
}
/* LINUXTODO: implement arm64 linux_set_cloned_tls */
int
linux_set_cloned_tls(struct thread *td, void *desc)
{
LIN_SDT_PROBE0(machdep, linux_set_cloned_tls, todo);
return (EDOOFUS);
if ((uint64_t)desc >= VM_MAXUSER_ADDRESS)
return (EPERM);
return (cpu_set_user_tls(td, desc));
}