On Mon, Mar 25, 2024 at 10:26 PM Aleksander Mazur via curl-library <curl-library@lists.haxx.se> wrote: > > Dnia 2024-03-21, o godz. 14:08:36 > Aleksander Mazur via curl-library <curl-library@lists.haxx.se> napisał(a): > > > The app keeps re-using the same 3 easy handles and one multi handle, created > > once at the beginning. Two of them may talk to the same server (one is > > switched between different servers). > > I didn't mention that the app uses yet another easy handle for sending e-mails > (smtps://...). > Valgrind found following error: > > ==101562== ERROR SUMMARY: 2 errors from 1 contexts (suppressed: 0 from 0) > ==101562== > ==101562== 2 errors in context 1 of 1: > ==101562== Invalid read of size 8 > ==101562== at 0x4983659: http2_data_done (http2.c:278) > ==101562== by 0x49881E8: cf_h2_cntrl (http2.c:2513) > ==101562== by 0x4963D13: Curl_conn_cf_cntrl (cfilters.c:501) > ==101562== by 0x4963F38: cf_cntrl_all (cfilters.c:551) > ==101562== by 0x4963FCF: Curl_conn_ev_data_detach (cfilters.c:568) > ==101562== by 0x4993D85: Curl_detach_connection (multi.c:973) > ==101562== by 0x49B2DC3: extract_if_dead (url.c:828) > ==101562== by 0x49B2E1E: call_extract_if_dead (url.c:854) > ==101562== by 0x496572C: Curl_conncache_foreach (conncache.c:332) > ==101562== by 0x49B3009: prune_dead_connections (url.c:883) > ==101562== by 0x49B772C: create_conn (url.c:3635) > ==101562== by 0x49B7D0D: Curl_connect (url.c:3873)
You have to build your application and cURL with -O0 or -O1. Valgrind becomes inaccurate at -O2 and above, and sometimes incorrectly reports uninitialized memory. Also see <https://valgrind.org/docs/manual/quick-start.html>. > ==101562== Address 0x84f9f88 is 8 bytes after a block of size 64 alloc'd > ==101562== at 0x4849E60: calloc (vg_replace_malloc.c:1595) > ==101562== by 0x498F348: curl_dbg_calloc (memdebug.c:175) > ==101562== by 0x49A98A9: smtp_init (smtp.c:1318) > ==101562== by 0x49AA0AE: smtp_setup_connection (smtp.c:1660) > ==101562== by 0x49B4DA2: setup_connection_internals (url.c:2042) > ==101562== by 0x49B7682: create_conn (url.c:3580) > ==101562== by 0x49B7D0D: Curl_connect (url.c:3873) > ==101562== by 0x4995B9E: multi_runsingle (multi.c:2002) > ==101562== by 0x49975B7: curl_multi_perform (multi.c:2780) > ==101562== by 0x41A599: main (main.c:221) This may be valid. > (using vanilla curl 8.6.0) > > So it looks like an easy handle set up by smtp handler is then passed via > cfilters to http2 code (?) Jeff -- Unsubscribe: https://lists.haxx.se/mailman/listinfo/curl-library Etiquette: https://curl.se/mail/etiquette.html
