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iflib: Fix a NULL pointer deref

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rxd_frag_to_sd() have pf_rv parameter as NULL with the current
code. This patch fixes the NULL pointer dereference in that
case thus avoiding a possible panic.

Submitted by: rajesh1.kumar at amd.com
Reviewed by: gallatin
Differential Revision: https://reviews.freebsd.org/D28115
This commit is contained in:
Andrew Gallatin 2021-01-21 09:45:15 -05:00
parent 523d94dbea
commit 0c864213ef
1 changed files with 2 additions and 1 deletions
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3
sys/net/iflib.c
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@ -2654,7 +2654,8 @@ rxd_frag_to_sd(iflib_rxq_t rxq, if_rxd_frag_t irf, bool unload, if_rxsd_t sd,
}
} else {
fl->ifl_sds.ifsd_m[cidx] = NULL;
*pf_rv = PFIL_PASS;
if (pf_rv != NULL)
*pf_rv = PFIL_PASS;
}
if (unload && irf->irf_len != 0)