https://bugs.kde.org/show_bug.cgi?id=356393

Oleksii Serdiuk <conta...@oleksii.name> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |conta...@oleksii.name

--- Comment #3 from Oleksii Serdiuk <conta...@oleksii.name> ---
I'm getting the same crash on Kubuntu 15.10 with Vlagrind 3.11.0 while trying
to analyze the application that uses libcurl:

vex: the `impossible' happened:
   isZeroU
vex storage: T total 15579834320 bytes allocated
vex storage: P total 640 bytes allocated

valgrind: the 'impossible' happened:
   LibVEX called failure_exit().

host stacktrace:
==6282==    at 0x38083F98: show_sched_status_wrk (m_libcassert.c:343)
==6282==    by 0x380840B4: report_and_quit (m_libcassert.c:415)
==6282==    by 0x380842F1: panic (m_libcassert.c:491)
==6282==    by 0x380842F1: vgPlain_core_panic_at (m_libcassert.c:496)
==6282==    by 0x3808431A: vgPlain_core_panic (m_libcassert.c:501)
==6282==    by 0x3809F6B2: failure_exit (m_translate.c:740)
==6282==    by 0x38148078: vpanic (main_util.c:231)
==6282==    by 0x381551DD: isZeroU.isra.16.part.17 (ir_opt.c:1226)
==6282==    by 0x38159302: isZeroU (ir_opt.c:1525)
==6282==    by 0x38159302: fold_Expr (ir_opt.c:2308)
==6282==    by 0x38159F36: subst_and_fold_Stmt (ir_opt.c:2585)
==6282==    by 0x38159F36: cprop_BB (ir_opt.c:2794)
==6282==    by 0x3815BE48: cheap_transformations (ir_opt.c:6414)
==6282==    by 0x3815CE96: do_iropt_BB (ir_opt.c:6608)
==6282==    by 0x38145E7C: LibVEX_Translate (main_main.c:916)
==6282==    by 0x380A1C3B: vgPlain_translate (m_translate.c:1765)
==6282==    by 0x380D294B: handle_chain_me (scheduler.c:1076)
==6282==    by 0x380D45AF: vgPlain_scheduler (scheduler.c:1420)
==6282==    by 0x380E3926: thread_wrapper (syswrap-linux.c:102)
==6282==    by 0x380E3926: run_a_thread_NORETURN (syswrap-linux.c:155)
==6282==    by 0x380E3DFA: vgModuleLocal_start_thread_NORETURN
(syswrap-linux.c:324)
==6282==    by 0x3810C60D: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)
==6282==    by 0xDEADBEEFDEADBEEE: ???
==6282==    by 0xDEADBEEFDEADBEEE: ???
==6282==    by 0xDEADBEEFDEADBEEE: ???

sched status:
  running_tid=8

[...]

Thread 8: status = VgTs_Runnable (lwpid 6351)
==6282==    at 0x9AF5980: ecp_nistz256_avx2_select_w7 (in
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0)
==6282==    by 0x9AD4CEF: EC_POINT_mul (in
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0)
==6282==    by 0x9AD3B36: EC_POINT_new (in
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0)
==6282==    by 0x9ADD029: EC_KEY_generate_key (in
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0)
==6282==    by 0x11775D94: ssl3_send_client_key_exchange (in
/lib/x86_64-linux-gnu/libssl.so.1.0.0)
==6282==    by 0x11779857: ssl3_connect (in
/lib/x86_64-linux-gnu/libssl.so.1.0.0)
==6282==    by 0x11782F3D: ssl23_connect (in
/lib/x86_64-linux-gnu/libssl.so.1.0.0)
==6282==    by 0xDC4FE83: ossl_connect_step2 (in
/usr/lib/x86_64-linux-gnu/libcurl.so.4.3.0)
==6282==    by 0xDC50999: ossl_connect_common (in
/usr/lib/x86_64-linux-gnu/libcurl.so.4.3.0)
==6282==    by 0xDC5433F: Curl_ssl_connect_nonblocking (in
/usr/lib/x86_64-linux-gnu/libcurl.so.4.3.0)
==6282==    by 0xDC1118C: Curl_http_connect (in
/usr/lib/x86_64-linux-gnu/libcurl.so.4.3.0)
==6282==    by 0xDC222C0: Curl_protocol_connect (in
/usr/lib/x86_64-linux-gnu/libcurl.so.4.3.0)
==6282==    by 0xDC3636D: multi_runsingle (in
/usr/lib/x86_64-linux-gnu/libcurl.so.4.3.0)
==6282==    by 0xDC36F5C: curl_multi_perform (in
/usr/lib/x86_64-linux-gnu/libcurl.so.4.3.0)
==6282==    [...]

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