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Clang static analysis reports this issue livepatch-shadow-fix1.c:113:2: warning: Use of memory after it is freed pr_info("%s: dummy @ %p, prevented leak @ %p\n", ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The pointer is freed in the previous statement. Reorder the pr_info to report before the free. Similar issue in livepatch-shadow-fix2.c Note that it is a false positive. pr_info() just prints the address. The freed memory is not accessed. Well, the static analyzer could not know this easily. Signed-off-by: Tom Rix <trix@redhat.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Acked-by: David Vernet <void@manifault.com> Acked-by: Joe Lawrence <joe.lawrence@redhat.com> [pmladek@suse.com: Note about that it was false positive.] Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20220320015143.2208591-1-trix@redhat.com |
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.. | ||
livepatch-callbacks-busymod.c | ||
livepatch-callbacks-demo.c | ||
livepatch-callbacks-mod.c | ||
livepatch-sample.c | ||
livepatch-shadow-fix1.c | ||
livepatch-shadow-fix2.c | ||
livepatch-shadow-mod.c | ||
Makefile |