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devproc: make sure statbufread offset wont turn negative

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This commit is contained in:
cinap_lenrek 2015-07-15 17:09:05 +02:00
parent ea7bca1829
commit bae3ac29fc
1 changed files with 1 additions and 1 deletions
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2
sys/src/9/port/devproc.c
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@ -995,7 +995,7 @@ procread(Chan *c, void *va, long n, vlong off)
qunlock(&p->debug); qunlock(&p->debug);
poperror(); poperror();
if(i <= 0) if(i <= 0 || i > j)
return 0; return 0;
if(i < n) if(i < n)
n = i; n = i;