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fix: failed byte off relocation for iov_iter.iov #176

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merged 1 commit into from
Oct 10, 2023
Merged

fix: failed byte off relocation for iov_iter.iov #176

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7 changes: 4 additions & 3 deletions GPL/Events/Process/Probe.bpf.c
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Original file line number Diff line number Diff line change
Expand Up @@ -372,11 +372,12 @@ static int tty_write__enter(struct kiocb *iocb, struct iov_iter *from)
}

const struct iovec *iov;
if (FIELD_OFFSET(iov_iter, __iov)) {
if (FIELD_OFFSET(iov_iter, __iov))
iov = (const struct iovec *)((char *)from + FIELD_OFFSET(iov_iter, __iov));
} else {
else if (bpf_core_field_exists(from->iov))
iov = BPF_CORE_READ(from, iov);
}
else
goto out;

u64 nr_segs = BPF_CORE_READ(from, nr_segs);
nr_segs = nr_segs > MAX_NR_SEGS ? MAX_NR_SEGS : nr_segs;
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