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kern: fix very old bug in syscall tracing

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This commit is contained in:
Giacomo Tesio 2017-11-17 01:23:53 +01:00
parent 7ae04d282f
commit 8ea71b1c66
2 changed files with 4 additions and 2 deletions
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4
sys/src/kern/amd64/syscall.c
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@ -323,13 +323,15 @@ syscall(Syscalls scallnr, Ureg* ureg)
}
if(up->syscallq != nil){
qlock(&up->debug);
if(up->syscallq != nil){
if(up->syscallq != nil
&& !waserror()){
notedefer();
if(!waserror()){
qwrite(up->syscallq, str, jehanne_strlen(str));
poperror();
}
noteallow();
poperror();
}
qunlock(&up->debug);
}