https://bugzilla.suse.com/show_bug.cgi?id=1214292 Bug ID: 1214292 Summary: zypper signal handler causes deadlock Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: Other OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: libzypp Assignee: zypp-maintainers@suse.de Reporter: fabian@ritter-vogt.de QA Contact: qa-bugs@suse.de Target Milestone: --- Found By: --- Blocker: --- I pressed Ctrl-C while zypper was busy calculating the "dup". This apparently caused a deadlock, the process does not react to any input anymore. With gdb, it's visible that the cause is that a signal handler calls "malloc", which is not allowed (not async-signal-safe). (gdb) bt #0 0x00007f2c72e8c79b in __lll_lock_wait_private () at /lib64/libc.so.6 #1 0x00007f2c72ea13e0 in malloc () at /lib64/libc.so.6 #2 0x00007f2c732bc9bc in operator new(unsigned long) () at /lib64/libstdc++.so.6 #3 0x00007f2c739739d2 in () at /lib64/libzypp.so.1722 #4 0x00007f2c73bb2018 in () at /lib64/libzypp.so.1722 #5 0x00007f2c733459dd in std::basic_ostream<char, std::char_traits<char> >& std::__ostream_insert<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*, long) () at /lib64/libstdc++.so.6 #6 0x000055aa51d6f085 in () #7 0x000055aa51d90dc9 in Zypper::instance() () #8 0x000055aa51d84309 in signal_handler(int) () #9 0x00007f2c72e3f1f0 in <signal handler called> () at /lib64/libc.so.6 #10 0x00007f2c72e9fa25 in _int_malloc () at /lib64/libc.so.6 #11 0x00007f2c72ea11ad in malloc () at /lib64/libc.so.6 #12 0x00007f2c732bc9bc in operator new(unsigned long) () at /lib64/libstdc++.so.6 #13 0x00007f2c73aa9bf1 in zypp::PoolItem::PoolItem(zypp::PoolItem::Impl*) () at /lib64/libzypp.so.1722 #14 0x00007f2c73ab0b56 in zypp::PoolItem::makePoolItem(zypp::sat::Solvable const&) () at /lib64/libzypp.so.1722 #15 0x00007f2c73afff1d in () at /lib64/libzypp.so.1722 #16 0x00007f2c73b04cc5 in zypp::ResPool::setHardLockQueries(std::__cxx11::list<zypp::PoolQuery, std::allocator<zypp::PoolQuery> > const&) () at /lib64/libzypp.so.1722 #17 0x00007f2c73a2f531 in zypp::target::TargetImpl::load(bool) () at /lib64/libzypp.so.1722 #18 0x000055aa51db9707 in load_target_resolvables(Zypper&) () #19 0x000055aa51db9998 in load_resolvables(Zypper&) () #20 0x000055aa51dd11e8 in ZypperBaseCommand::defaultSystemSetup(Zypper&, zypp::base::Flags<SetupSystemBits>) () #21 0x000055aa51dd16af in ZypperBaseCommand::run(Zypper&) () #22 0x000055aa51d92903 in Zypper::doCommand(int, char**, int) () #23 0x000055aa51d67dfa in Zypper::main(int, char**) () #24 0x000055aa51d66a21 in main () -- You are receiving this mail because: You are on the CC list for the bug.