When read_string() fails, error() dereferences the name variable to print the nullchar that the variable points to. However, name points to a nullchar that is not in crash's memory-space thus triggering a segmentation fault. This commit replaces %s in the error message with %p so the address is printed instead. Signed-off-by: Matias Ezequiel Vara Larsen <matias.vara(a)vates.fr&gt; --- memory.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/memory.c b/memory.c index c80ef61..8a1c055 100644 --- a/memory.c +++ b/memory.c @@ -6599,7 +6599,7 @@ page_flags_init_from_pageflag_names(void) } if (!read_string((ulong)name, namebuf, BUFSIZE-1)) { - error(INFO, "failed to read pageflag_names entry (i: %d name: \"%s\" mask: %ld)\n", + error(INFO, "failed to read pageflag_names entry (i: %d name: \"%p\" mask: %ld)\n", i, name, mask); goto pageflags_fail; } -- 2.25.1