Alex Richardson 9efbe526e0 libthr: work around an ASAN false-positive ... I got the following error with an ASAN-instrument libthr: ==803==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7fffffffcdb0 at pc 0x000801863396 bp 0x7ff8 READ of size 4 at 0x7fffffffcdb0 thread T0 #0 0x801863395 in handle_signal /local/scratch/alr48/cheri/freebsd/lib/libthr/thread/thr_sig.c:262:2 #1 0x801860da2 in thr_sighandler /local/scratch/alr48/cheri/freebsd/lib/libthr/thread/thr_sig.c:246:2 Address 0x7fffffffcdb0 is located in stack of thread T0 at offset 208 in frame #0 0x80186080f in thr_sighandler /local/scratch/alr48/cheri/freebsd/lib/libthr/thread/thr_sig.c:213 This frame has 1 object(s): [32, 64) 'act' (line 216) <== Memory access at offset 208 overflows this variable HINT: this may be a false positive if your program uses some custom stack This seems like a false-positive since the line in question is `SIGSETOR(actp->sa_mask, ucp->uc_sigmask);` and it complains about a read operation (from the ucontext_t argument) so this indicates to me that ASAN does not understand that thr_sighandler() is a signal handler. Differential Revision: https://reviews.freebsd.org/D31074		2021-08-02 14:33:24 +01:00
..
arch	Remove the last users of ARM_TP_ADDRESS	2021-04-08 07:52:54 +00:00
sys
tests
thread	rtld: make dlerror() thread-local	2021-04-10 17:33:34 +03:00
libthr.3
Makefile	libthr: work around an ASAN false-positive	2021-08-02 14:33:24 +01:00
Makefile.depend
plockstat.d
pthread.map	rtld: workaround for broken ABI	2021-04-10 17:33:33 +03:00