Both %pE and %ph are unusable in kasprintf(), since the occurrence of either will trigger an oops during the first vsnprintf call where kasprintf tries to find the correct size to allocate. These oopses could be papered over with somewhat smaller patches than these, but then the return value from vsnprintf would still not reflect the actual size needed. For %pE, this requires a change of semantics of string_escape_mem and hence an annoyingly large diffstat. Whether this is 3.20, 3.21 and/or -stable material (or /dev/null material, for that matter ;-)) I'll leave to others to decide. Rasmus Villemoes (2): lib/vsprintf.c: Fix potential NULL deref in hex_string string_helpers: Change semantics of string_escape_mem include/linux/string_helpers.h | 10 +-- lib/string_helpers.c | 195 ++++++++++++++++------------------------- lib/test-string_helpers.c | 37 ++++---- lib/vsprintf.c | 25 ++++-- net/sunrpc/cache.c | 8 +- 5 files changed, 119 insertions(+), 156 deletions(-) -- 2.1.3 -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
