[GHC] #8933: process007: internal error: checkStackFrame: weird activation record found on stack

#8933: process007: internal error: checkStackFrame: weird activation record found on stack ------------------------------------+---------------------------------- Reporter: trommler | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.8.1 Component: Compiler | Version: 7.8.1-rc2 Keywords: | Operating System: Linux Architecture: Unknown/Multiple | Type of failure: Runtime crash Difficulty: Unknown | Test Case: process007 Blocked By: | Blocking: Related Tickets: | ------------------------------------+---------------------------------- On an unregisterised compiler process007 segfaults in all WAYS. Here is a stack trace from a run with {{{+RTS -DS}}} on an x86_64 machine: {{{ Starting program: /home/trp/research/ghc- unreg/ghc-7.8/libraries/process/tests/process007 +RTS -DS [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". cap 0: initialised process007: internal error: checkStackFrame: weird activation record found on stack (0x7ffff69050b8 281051976). (GHC version 7.8.0.20140324 for x86_64_unknown_linux) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug Program received signal SIGABRT, Aborted. 0x00007ffff6a95849 in raise () from /lib64/libc.so.6 (gdb) where #0 0x00007ffff6a95849 in raise () from /lib64/libc.so.6 #1 0x00007ffff6a96cd8 in abort () from /lib64/libc.so.6 #2 0x00000000008172af in rtsFatalInternalErrorFn ( s=0x894080 "checkStackFrame: weird activation record found on stack (%p %d).", ap=0x7fffffffd968) at rts/RtsMessages.c:170 #3 0x0000000000816ee7 in barf ( s=0x894080 "checkStackFrame: weird activation record found on stack (%p %d).") at rts/RtsMessages.c:42 #4 0x00000000008355e2 in checkStackFrame (c=0x7ffff69050b8) at rts/sm/Sanity.c:165 #5 0x000000000083560a in checkStackChunk (sp=0x7ffff69050b8, stack_end=0x7ffff6905390) at rts/sm/Sanity.c:177 #6 0x0000000000836100 in checkSTACK (stack=0x7ffff6905000) at rts/sm/Sanity.c:497 #7 0x0000000000836254 in checkTSO (tso=0x7ffff6905390) at rts/sm/Sanity.c:535 #8 0x000000000082625a in threadStackOverflow (cap=0xd79740 <MainCapability>, tso=0x7ffff6905390) at rts/Threads.c:500 #9 0x000000000082226a in schedule ( initialCapability=0xd79740 <MainCapability>, task=0xd9a4e0) at rts/Schedule.c:528 #10 0x00000000008236b3 in scheduleWaitThread (tso=0x7ffff6905390, ret=0x0, pcap=0x7fffffffdcc0) at rts/Schedule.c:2346 #11 0x0000000000824d63 in rts_evalLazyIO (cap=0x7fffffffdcc0, p=0xbd4da0 , ret=0x0) at rts/RtsAPI.c:500 #12 0x00000000008272de in real_main () at rts/RtsMain.c:63 #13 0x00000000008273d1 in hs_main (argc=3, argv=0x7fffffffde48, main_closure=0xbd4da0 , rts_config=...) at rts/RtsMain.c:114 #14 0x000000000040849f in main () }}} Running without the RTS flags: {{{ Program received signal SIGSEGV, Segmentation fault. 0x00000000008307ed in StgRun (f=0xd79758b8e5894855, basereg=0xd79758 ) at rts/StgCRun.c:81 81 f = (StgFunPtr) (f)(); (gdb) where #0 0x00000000008307ed in StgRun (f=0xd79758b8e5894855, basereg=0xd79758 ) at rts/StgCRun.c:81 #1 0x0000000000822022 in schedule ( initialCapability=0xd79740 <MainCapability>, task=0xd9a470) at rts/Schedule.c:463 #2 0x00000000008236b3 in scheduleWaitThread (tso=0x7ffff6905390, ret=0x0, pcap=0x7fffffffdcd0) at rts/Schedule.c:2346 #3 0x0000000000824d63 in rts_evalLazyIO (cap=0x7fffffffdcd0, p=0xbd4da0 , ret=0x0) at rts/RtsAPI.c:500 #4 0x00000000008272de in real_main () at rts/RtsMain.c:63 #5 0x00000000008273d1 in hs_main (argc=1, argv=0x7fffffffde58, main_closure=0xbd4da0 , rts_config=...) at rts/RtsMain.c:114 #6 0x000000000040849f in main () }}} The value of f in StgRun looks strange the first three bytes are the same as basereg {{{0xd79758}}}. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8933 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler