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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){ if(up->syscallq != nil){
qlock(&up->debug); qlock(&up->debug);
if(up->syscallq != nil){ if(up->syscallq != nil
&& !waserror()){
notedefer(); notedefer();
if(!waserror()){ if(!waserror()){
qwrite(up->syscallq, str, jehanne_strlen(str)); qwrite(up->syscallq, str, jehanne_strlen(str));
poperror(); poperror();
} }
noteallow(); noteallow();
poperror();
} }
qunlock(&up->debug); qunlock(&up->debug);
} }