Commit ce1eadda authored by Johannes Berg's avatar Johannes Berg

cfg80211: fix wdev tracing crash

Arend reported a crash in tracing if the driver returns an
ERR_PTR() value from the add_virtual_intf() callback. This
is due to the tracing then still attempting to dereference
the "pointer", fix this by using IS_ERR_OR_NULL().
Reported-by: default avatarArend van Spriel <>
Tested-by: default avatarArend van Spriel <>
Signed-off-by: default avatarJohannes Berg <>
parent 07e5a5f5
......@@ -27,7 +27,8 @@
#define WIPHY_PR_ARG __entry->wiphy_name
#define WDEV_ENTRY __field(u32, id)
#define WDEV_ASSIGN (__entry->id) = (wdev ? wdev->identifier : 0)
#define WDEV_ASSIGN (__entry->id) = (!IS_ERR_OR_NULL(wdev) \
? wdev->identifier : 0)
#define WDEV_PR_FMT "wdev(%u)"
#define WDEV_PR_ARG (__entry->id)
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