[GHC] #15060: outofmem testcase sometimes crashes on i386

[GHC]

#15060: outofmem testcase sometimes crashes on i386
-------------------------------------+-----------------------------------
        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.6.1
       Component:  Runtime System    |              Version:  8.2.2
      Resolution:                    |             Keywords:  ci-breakage
Operating System:  Unknown/Multiple  |         Architecture:  x86
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-----------------------------------

Comment (by bgamari):

 `gdb` has the following to say,
 {{{
 outofmem: internal error: getMBlock: mmap: Invalid argument
     (GHC version 8.5.20180516 for i386_unknown_linux)
     Please report this as a GHC bug:
 http://www.haskell.org/ghc/reportabug

 Program received signal SIGABRT, Aborted.
 0xf7d8be2c in __GI_raise (sig=sig at entry=6) at
 ../nptl/sysdeps/unix/sysv/linux/raise.c:56
 56      ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or
 directory.
 (gdb) bt
 #0  0xf7d8be2c in __GI_raise (sig=sig at entry=6) at
 ../nptl/sysdeps/unix/sysv/linux/raise.c:56
 #1  0xf7d8d4b3 in __GI_abort () at abort.c:89
 #2  0x08306486 in rtsFatalInternalErrorFn (s=0x833e2dd "getMBlock: mmap:
 %s", ap=0xffffb4a4 "^\300\350\367\021") at rts/RtsMessages.c:188
 #3  0x08306555 in barf (s=0x833e2dd "getMBlock: mmap: %s") at
 rts/RtsMessages.c:47
 #4  0x08310036 in my_mmap_or_barf (addr=0x77900000,
 size=size at entry=1074790400, operation=3) at rts/posix/OSMem.c:233
 #5  0x0831011b in osGetMBlocks (n=1025) at rts/posix/OSMem.c:291
 #6  0x08309eb4 in getCommittedMBlocks (n=1025) at rts/sm/MBlock.c:534
 #7  getMBlocks (n=1025) at rts/sm/MBlock.c:580
 #8  0x0830a2d0 in alloc_mega_group (node=node at entry=0, mblocks=<optimized
 out>) at rts/sm/BlockAlloc.c:378
 #9  0x0830a70a in allocGroupOnNode (node=0, n=262145) at
 rts/sm/BlockAlloc.c:405
 #10 0x0830d12e in allocateMightFail (cap=0x8407600 <MainCapability>,
 n=268435459) at rts/sm/Storage.c:884
 #11 0x08314a61 in stg_newByteArrayzh ()
 #12 0x08407600 in ?? ()
 Backtrace stopped: previous frame inner to this frame (corrupt stack?)
 (gdb)
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15060#comment:2>
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