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[Bug 1045340] groupwise segfaults on kernel-default-4.4.72-18.12.2 (regression from stack gap fix?)
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Wed, 21 Jun 2017 21:18:03 +0000
  • Message-id: <bug-1045340-21960-DWOixVeLjd@http.bugzilla.suse.com/>
http://bugzilla.suse.com/show_bug.cgi?id=1045340
http://bugzilla.suse.com/show_bug.cgi?id=1045340#c10

--- Comment #10 from Vlastimil Babka <vbabka@xxxxxxxx> ---
(In reply to Vlastimil Babka from comment #9)
Catchpoint 1 (call to syscall mmap2), 0xf7fd9f89 in __kernel_vsyscall ()

(gdb) bt
#0 0xf7fd9f89 in __kernel_vsyscall ()
#1 0xf7454508 in mmap () from /lib/libc.so.6
#2 0xf7a51cdb in os::commit_memory(char*, unsigned int, bool) () from
/opt/novell/groupwise/client/java/lib/i386/client/libjvm.so
#3 0xf7afd1be in JavaThread::create_stack_guard_pages() () from
/opt/novell/groupwise/client/java/lib/i386/client/libjvm.so
#4 0xf7afedd3 in Threads::create_vm(JavaVMInitArgs*, bool*) () from
/opt/novell/groupwise/client/java/lib/i386/client/libjvm.so
#5 0xf7960566 in JNI_CreateJavaVM () from
/opt/novell/groupwise/client/java/lib/i386/client/libjvm.so
#6 0x08048dc3 in LaunchJavaVm (argc=0, argv=0xffffd528,
szPathToClientDir=0xffffd068 "/opt/novell/groupwise/client") at
grpwisex.cpp:380
#7 0x080497a3 in main (argc=1, argv=0xffffd524) at grpwisex.cpp:473

Catchpoint 2 (call to syscall mprotect), 0xf7fd9f89 in __kernel_vsyscall ()
(gdb) bt
#0 0xf7fd9f89 in __kernel_vsyscall ()
#1 0xf74545f9 in mprotect () from /lib/libc.so.6
#2 0xf7a525b9 in os::guard_memory(char*, unsigned int) () from
/opt/novell/groupwise/client/java/lib/i386/client/libjvm.so
#3 0xf7afd1e2 in JavaThread::create_stack_guard_pages() () from
/opt/novell/groupwise/client/java/lib/i386/client/libjvm.so
#4 0xf7afedd3 in Threads::create_vm(JavaVMInitArgs*, bool*) () from
/opt/novell/groupwise/client/java/lib/i386/client/libjvm.so
#5 0xf7960566 in JNI_CreateJavaVM () from
/opt/novell/groupwise/client/java/lib/i386/client/libjvm.so
#6 0x08048dc3 in LaunchJavaVm (argc=0, argv=0xffffd528,
szPathToClientDir=0xffffd068 "/opt/novell/groupwise/client") at
grpwisex.cpp:380
#7 0x080497a3 in main (argc=1, argv=0xffffd524) at grpwisex.cpp:473

At least we see it's done by java itself and not glibc.

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