The branch main has been updated by trasz:
URL:
https://cgit.FreeBSD.org/src/commit/?id=b54838003cd43845576764dbad8f587d8f8b291d
commit b54838003cd43845576764dbad8f587d8f8b291d
Author: Edward Tomasz Napierala <tr...@freebsd.org>
AuthorDate: 2021-07-26 10:57:47 +0000
Commit: Edward Tomasz Napierala <tr...@freebsd.org>
CommitDate: 2021-07-26 10:57:52 +0000
linux: fix sigaltstack on amd64
To determine whether to use alternate signal stack or not,
we need to use the native signal number, not the one translated
with bsd_to_linux_signal().
In practical terms, this fixes golang.
Reviewed By: dchagin
Fixes: 135dd0cab51
Sponsored By: EPSRC
Differential Revision: https://reviews.freebsd.org/D31298
---
sys/amd64/linux/linux_sysvec.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/sys/amd64/linux/linux_sysvec.c b/sys/amd64/linux/linux_sysvec.c
index fede294ce706..75fb21c7d037 100644
--- a/sys/amd64/linux/linux_sysvec.c
+++ b/sys/amd64/linux/linux_sysvec.c
@@ -630,9 +630,6 @@ linux_rt_sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t
*mask)
LINUX_CTR4(rt_sendsig, "%p, %d, %p, %u",
catcher, sig, mask, code);
- /* Translate the signal. */
- sig = bsd_to_linux_signal(sig);
-
/* Save user context. */
bzero(&sf, sizeof(sf));
bsd_to_linux_sigset(mask, &sf.sf_sc.uc_sigmask);
@@ -676,6 +673,9 @@ linux_rt_sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t
*mask)
/* Align to 16 bytes. */
sfp = (struct l_rt_sigframe *)((unsigned long)sp & ~0xFul);
+ /* Translate the signal. */
+ sig = bsd_to_linux_signal(sig);
+
/* Build the argument list for the signal handler. */
regs->tf_rdi = sig; /* arg 1 in %rdi */
regs->tf_rax = 0;
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