If the last part of the PCI address (function number) is missing, the parsing was successful, assuming function 0. The call to strtoul is not returning an error in such a case, so an explicit check is inserted before.
This bug has always been there in older parsing macros: - GET_PCIADDR_FIELD - GET_BLACKLIST_FIELD Fixes: af75078fece3 ("first public release") Cc: sta...@dpdk.org Reported-by: Wisam Jaddo <wis...@mellanox.com> Signed-off-by: Thomas Monjalon <tho...@monjalon.net> --- lib/librte_pci/rte_pci.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/lib/librte_pci/rte_pci.c b/lib/librte_pci/rte_pci.c index 530738dbd..f400178bb 100644 --- a/lib/librte_pci/rte_pci.c +++ b/lib/librte_pci/rte_pci.c @@ -30,6 +30,10 @@ get_u8_pciaddr_field(const char *in, void *_u8, char dlm) uint8_t *u8 = _u8; char *end; + /* empty string is an error though strtoul() returns 0 */ + if (*in == '\0') + return NULL; + errno = 0; val = strtoul(in, &end, 16); if (errno != 0 || end[0] != dlm || val > UINT8_MAX) { -- 2.19.0