Michael Hudson-Doyle 955b4caa48 test: move allocation before munmap in recover4 ... recover4 allocates 16 pages of memory via mmap, makes a 4 page hole in it with munmap, allocates another 16 pages of memory via normal allocation and then tries to copy from one to the other. For some reason on arm64 (but no other platform I have tested) the second allocation sometimes causes the runtime to ask the kernel for 4 additional pages of memory -- which the kernel satisfies by remapping the pages that were just unmapped! Moving the second allocation before the munmap fixes this behaviour, I can run recover4 tens of thousands of times without failure with this fix vs a failure rate of ~0.5% before. Fixes #12549 Change-Id: I490b895b606897e4f7f25b1b51f5d485a366fffb Reviewed-on: https://go-review.googlesource.com/14632 Reviewed-by: Dave Cheney <dave@cheney.net>		2015-09-16 08:51:48 +00:00
..
bench	test/bench/shootout: fix build	2015-07-31 17:37:58 +00:00
bugs	test: migrate remaining tests to run.go	2014-12-22 22:41:34 +00:00
chan	Fix several out of date references to 4g/5g/6g/8g/9g.	2015-06-26 03:38:21 +00:00
ddd2.dir	test: convert tests to run.go whenever possible.	2012-10-10 22:35:27 +02:00
dwarf	test: make rundir match compiledir/errorcheckdir.	2013-01-11 22:00:48 +01:00
fixedbugs	cmd/compile: fix register allocation for == operator	2015-08-25 18:10:14 +00:00
import2.dir	test: convert more tests to rundir/compiledir conventions	2012-10-07 23:22:01 +02:00
import4.dir	test: match gccgo import error messages	2013-12-12 19:02:11 -08:00
interface	cmd/internal/gc: improve "type *X has no field or method M" message	2015-05-07 16:21:57 +00:00
ken	go/test/chan1.go: fix typo	2012-02-25 08:47:04 +11:00
method4.dir	cmd/gc: do not omit wrapper for expression (interface{...}).F	2014-01-07 13:26:48 +01:00
safe	test: adapt old-style tests to new flag parsing.	2013-01-11 22:05:46 +01:00
stress	build: adjustments for move from src/pkg to src	2014-09-08 00:06:45 -04:00
syntax	test: match gccgo error messages	2013-12-12 17:18:12 -08:00
64bit.go	cmd/gc: Error out on division by constant zero.	2013-01-30 20:21:08 +01:00
235.go
alias1.go	test: ensure all failing tests exit nonzero.	2013-02-12 13:17:49 -05:00
alias.go
append.go
args.go	test: run some more tests by default	2012-11-08 09:04:27 -08:00
assign1.go
assign.go	cmd/gc: prohibit short variable declarations containing duplicate symbols	2014-10-06 17:16:39 -04:00
bigalg.go	test: ensure all failing tests exit nonzero.	2013-02-12 13:17:49 -05:00
bigmap.go	runtime: handle and test large map values	2012-05-24 22:41:07 -04:00
blank1.go	test: match gccgo error messages for blank1.go	2013-09-28 15:19:05 -07:00
blank.go	test: revert changes made for Go SSA interpreter test.	2013-10-08 14:36:20 -04:00
bom.go	gc: initial BOM is legal.	2012-09-10 13:03:07 -07:00
bombad.go	gc: initial BOM is legal.	2012-09-10 13:03:07 -07:00
bounds.go	test: prepare for 64-bit ints	2012-09-24 00:06:41 -04:00
chancap.go
chanlinear.go	runtime: test for linear enqueue/dequeue behavior	2014-12-08 22:18:17 +00:00
char_lit1.go
char_lit.go
clearfat.go	[dev.power64] 9g: fix under-zeroing in clearfat	2014-10-31 11:08:27 -04:00
closedchan.go
closure1.go	cmd/gc: capture variables by value	2015-01-29 13:07:30 +00:00
closure2.go	cmd/gc: fix capturing by value for range statements	2015-02-03 15:48:48 +00:00
closure.go	test: enforce 1 proc in the test	2012-07-01 21:59:50 +04:00
cmp6.go	cmd/gc: do not consider length zero arrays as comparable.	2014-01-31 00:30:56 +01:00
cmp.go	Fix several out of date references to 4g/5g/6g/8g/9g.	2015-06-26 03:38:21 +00:00
cmplx.go	cmd/gc: reject complex calls with mismatched argument types.	2013-03-11 22:55:14 +01:00
cmplxdivide1.go	test: use testlib in a few more cases	2012-03-22 02:14:44 +08:00
cmplxdivide.c	test: comment the behavior and use of cmplxdivide*	2015-01-15 00:00:06 +00:00
cmplxdivide.go	test: comment the behavior and use of cmplxdivide*	2015-01-15 00:00:06 +00:00
complit1.go	cmd/internal/gc: accept map literals with omitted key type	2015-06-04 02:31:38 +00:00
complit.go
compos.go
const1.go	test: match gccgo error messages	2013-12-12 17:18:12 -08:00
const2.go	test: match gccgo error messages	2012-09-28 08:30:30 -07:00
const3.go
const4.go	all: link to https instead of http	2015-07-11 14:36:33 +00:00
const5.go	all: link to https instead of http	2015-07-11 14:36:33 +00:00
const6.go	test: match gccgo error strings.	2013-06-26 18:05:02 +02:00
const.go	cmd/compile: allow huge rsh in constants arithmetic	2015-08-21 20:27:22 +00:00
convert1.go
convert3.go
convert.go
convlit1.go
convlit.go	cmd/internal/gc: unsafe.Pointer constants may only be converted to uintptr	2015-05-07 23:54:28 +00:00
convT2X.go	cmd/gc: cache itab lookup in convT2I.	2012-07-03 09:09:05 +10:00
copy.go	test: ensure all failing tests exit nonzero.	2013-02-12 13:17:49 -05:00
crlf.go	test: use testlib in a few more cases (part 2)	2012-04-20 23:45:43 +08:00
ddd1.go	test: match gccgo error messages	2012-09-28 08:30:30 -07:00
ddd2.go	test: convert tests to run.go whenever possible.	2012-10-10 22:35:27 +02:00
ddd.go	test: enable method expression tests in ddd.go	2012-03-07 11:17:26 -08:00
decl.go	test: ensure all failing tests exit nonzero.	2013-02-12 13:17:49 -05:00
declbad.go	test: correct type in declbad.go	2012-10-07 21:52:57 +02:00
defer.go	test: ensure all failing tests exit nonzero.	2013-02-12 13:17:49 -05:00
deferfin.go	runtime: combine small NoScan allocations	2014-01-24 22:35:11 +04:00
deferprint.go	test: add cmpout to testlib	2012-02-24 13:17:26 +11:00
deferprint.out
divide.go	test: ensure all failing tests exit nonzero.	2013-02-12 13:17:49 -05:00
divmod.go	all: fix a few spelling errors in source comments	2013-12-27 08:59:02 -08:00
empty.go
env.go
eof1.go
eof.go
errchk	Fix several out of date references to 4g/5g/6g/8g/9g.	2015-06-26 03:38:21 +00:00
escape2.go	cmd/compile: handle copy in escape analysis	2015-06-24 22:22:55 +00:00
escape2n.go	cmd/compile: handle copy in escape analysis	2015-06-24 22:22:55 +00:00
escape3.go
escape4.go	cmd/internal/gc: transitive inlining	2015-02-26 17:36:00 +00:00
escape5.go	cmd/internal/gc: move check for large-hence-heap-allocated types into escape analysis	2015-05-22 02:13:54 +00:00
escape_array.go	cmd/internal/gc: move check for large-hence-heap-allocated types into escape analysis	2015-05-22 02:13:54 +00:00
escape_calls.go	cmd/internal/gc: make indirect calls properly escape-y	2015-05-22 01:36:11 +00:00
escape_closure.go	cmd/internal/gc: improve flow of input params to output params	2015-05-01 13:47:20 +00:00
escape_field.go	cmd/internal/gc: improve flow of input params to output params	2015-05-01 13:47:20 +00:00
escape_iface.go	cmd/compile: add case for ODOTTYPE to escwalk	2015-07-30 17:39:44 +00:00
escape_indir.go	cmd/internal/gc: improve flow of input params to output params	2015-05-01 13:47:20 +00:00
escape_level.go	cmd/internal/gc: improve flow of input params to output params	2015-05-01 13:47:20 +00:00
escape_map.go	test: add tests for escape analysis of interface conversions	2015-03-28 16:15:27 +00:00
escape_param.go	cmd/internal/gc: improve flow of input params to output params	2015-05-01 13:47:20 +00:00
escape_slice.go	cmd/internal/gc: extend escape analysis to pointers in slices	2015-05-18 15:34:39 +00:00
escape_struct_param1.go	cmd/internal/gc: improve flow of input params to output params	2015-05-01 13:47:20 +00:00
escape_struct_param2.go	cmd/internal/gc: improve flow of input params to output params	2015-05-01 13:47:20 +00:00
escape_struct_return.go	cmd/internal/gc: improve flow of input params to output params	2015-05-01 13:47:20 +00:00
escape.go	test: ensure all failing tests exit nonzero.	2013-02-12 13:17:49 -05:00
fibo.go	Fix whitespace (use blanks consistently).	2014-12-08 22:22:58 +00:00
float_lit2.go	test: fix two typos in float_lit2.go	2014-05-21 17:19:12 -04:00
float_lit3.go	test/float_lit2.go: rewrite to test values near boundaries	2014-05-21 17:12:06 -04:00
float_lit.go	test: ensure all failing tests exit nonzero.	2013-02-12 13:17:49 -05:00
floatcmp.go	test: ensure all failing tests exit nonzero.	2013-02-12 13:17:49 -05:00
for.go
func1.go	cmd/gc: ensure unique parameter and result names in function types	2013-03-15 15:24:13 -04:00
func2.go
func3.go
func4.go
func5.go
func6.go	Fix several out of date references to 4g/5g/6g/8g/9g.	2015-06-26 03:38:21 +00:00
func7.go	Fix several out of date references to 4g/5g/6g/8g/9g.	2015-06-26 03:38:21 +00:00
func8.go	test: ensure all failing tests exit nonzero.	2013-02-12 13:17:49 -05:00
func.go
funcdup2.go	test: match gccgo error messages	2013-12-12 17:18:12 -08:00
funcdup.go	test: match gccgo error messages	2013-12-12 17:18:12 -08:00
gc1.go
gc2.go	test: check for build constraints only upto the first blank line	2015-02-06 05:36:26 +00:00
gc.go
gcstring.go	runtime: fix empty string handling in garbage collector	2014-03-11 23:58:39 -04:00
goprint.go	test: make goprint.go wait longer for go its routine to execute	2013-04-12 16:04:19 -07:00
goprint.out
goto.go	Revert "cmd/internal/gc: ignore declarations of types for goto validation"	2015-05-15 16:35:49 +00:00
helloworld.go	test: add cmpout to testlib	2012-02-24 13:17:26 +11:00
helloworld.out
if.go
import1.go	test: match gccgo import error messages	2013-12-12 19:02:11 -08:00
import2.go	test: convert more tests to rundir/compiledir conventions	2012-10-07 23:22:01 +02:00
import4.go	test: convert more tests to rundir/compiledir conventions	2012-10-07 23:22:01 +02:00
import5.go	gc: disallow absolute import paths	2012-02-29 15:28:36 -05:00
import.go
index0.go	test: run index test by default	2012-11-07 12:33:54 -08:00
index1.go	test: run index test by default	2012-11-07 12:33:54 -08:00
index2.go	test: run index test by default	2012-11-07 12:33:54 -08:00
index.go	Fix several out of date references to 4g/5g/6g/8g/9g.	2015-06-26 03:38:21 +00:00
indirect1.go
indirect.go
init1.go	test: deflake init1.go test, tighten its bounds	2015-02-13 22:13:56 +00:00
init.go
initcomma.go
initialize.go
initializerr.go	test: add "duplicate" struct map key test	2012-12-17 11:05:58 -05:00
initloop.go	cmd/compile: use []*Node instead of NodeList in sinit	2015-09-05 02:25:01 +00:00
inline.go	cmd/internal/gc: transitive inlining	2015-02-26 17:36:00 +00:00
int_lit.go
intcvt.go
iota.go
label1.go
label.go
linkx_run.go	cmd/link: detect -X setting non-string variable	2015-06-29 20:28:36 +00:00
linkx.go	cmd/link: detect -X setting non-string variable	2015-06-29 20:28:36 +00:00
literal.go	test: ensure all failing tests exit nonzero.	2013-02-12 13:17:49 -05:00
live1.go	cmd/gc: correct liveness for fat variables	2014-02-15 10:58:55 -05:00
live2.go	cmd/gc: allocate non-escaping maps on stack	2015-02-12 09:53:52 +00:00
live.go	test: add -update_errors flag to run script	2015-04-10 11:33:42 +00:00
mallocfin.go
map1.go	cmd/gc: fix type checking loop	2012-06-07 03:06:40 -04:00
map.go	test/mapnan.go: add regression test for non-empty interfaces.	2014-08-06 17:02:55 -04:00
maplinear.go	test: make maplinear more robust	2014-10-27 18:59:02 -04:00
method1.go
method2.go	cmd/gc: fix method values whose receiver is an unnamed interface.	2013-08-29 10:00:58 +02:00
method3.go
method4.go	test: convert more tests to rundir/compiledir conventions	2012-10-07 23:22:01 +02:00
method5.go	cmd/gc: implement method values	2013-03-20 17:11:09 -04:00
method.go	test: a number of fixes.	2013-02-11 18:20:52 -05:00
named1.go	cmd/gc: comma-ok assignments produce untyped bool as 2nd result	2014-08-11 16:11:55 -07:00
named.go
nil.go	test: ensure all failing tests exit nonzero.	2013-02-12 13:17:49 -05:00
nilcheck.go	cmd/gc: optimize existence-only map lookups	2015-01-07 22:36:06 +00:00
nilptr2.go	test: revert changes made for Go SSA interpreter test.	2013-10-08 14:36:20 -04:00
nilptr3.go	cmd/7g: enable peephole optimizer	2015-04-08 08:16:54 +00:00
nilptr4.go	cmd/gc: fix bad checknil with ints on 32 bit compilers	2014-02-26 12:25:13 -08:00
nilptr.go	test/nilptr: add more tests	2013-09-05 23:06:34 -04:00
nosplit.go	cmd/internal/obj/arm64: reject misaligned stack frames, except empty frames	2015-07-29 21:37:12 +00:00
nul1.go	test: run some more tests by default	2012-11-08 09:04:27 -08:00
parentype.go	test/[n-r]*.go: add documentation	2012-02-24 10:30:39 +11:00
peano.go	test/[n-r]*.go: add documentation	2012-02-24 10:30:39 +11:00
print.go	runtime: move built-in print routines to go.	2014-07-31 13:48:48 -07:00
print.out	runtime: move built-in print routines to go.	2014-07-31 13:48:48 -07:00
printbig.go	test: add cmpout to testlib	2012-02-24 13:17:26 +11:00
printbig.out
range.go	cmd/gc: implement 'for range x {'	2014-07-16 19:27:10 -04:00
recover1.go
recover2.go
recover3.go	tests: remove two misuses of nil pointers	2013-08-15 11:51:04 -04:00
recover4.go	test: move allocation before munmap in recover4	2015-09-16 08:51:48 +00:00
recover.go	test: add more cases to recover.go	2014-10-22 08:06:15 -07:00
rename1.go	test: fix the fix of the rename tests.	2012-02-24 15:06:32 +11:00
rename.go	test: ensure all failing tests exit nonzero.	2013-02-12 13:17:49 -05:00
reorder2.go	cmd/gc: shorten temporary lifetimes when possible	2014-04-01 13:31:38 -04:00
reorder.go	test: a number of fixes.	2013-02-11 18:20:52 -05:00
return.go	test: add cases to return.go that gccgo got wrong	2013-08-07 11:31:01 -07:00
rotate0.go	test: re-enable rotate tests	2015-05-28 19:40:58 +00:00
rotate1.go	test: re-enable rotate tests	2015-05-28 19:40:58 +00:00
rotate2.go	test: re-enable rotate tests	2015-05-28 19:40:58 +00:00
rotate3.go	test: re-enable rotate tests	2015-05-28 19:40:58 +00:00
rotate.go	test: add rotate.go and fixedbugs/bug313	2013-01-11 22:42:55 +01:00
run.go	runtime: fix x86 stack trace for call to heap memory	2015-07-13 19:42:35 +00:00
rune.go	test/[n-r]*.go: add documentation	2012-02-24 10:30:39 +11:00
runtime.go	test/[n-r]*.go: add documentation	2012-02-24 10:30:39 +11:00
shift1.go	test: avoid "declared but not used" errors in shift1.go	2014-07-20 12:25:24 -07:00
shift2.go	test: add shift expression incorrectly rejected by gccgo.	2013-06-25 08:06:34 +02:00
sieve.go	test/[n-z]*.go: add documentation	2012-02-24 11:48:19 +11:00
sigchld.go	test: skip SIGCHLD test on Plan 9	2014-01-29 09:28:23 +01:00
sigchld.out
simassign.go	test/[n-z]*.go: add documentation	2012-02-24 11:48:19 +11:00
sinit_run.go	all: retire architecture letter in file names, public API	2015-05-21 17:32:17 +00:00
sinit.go	cmd/compile: allow static init for unsafe.Pointer(&x) where x is global	2015-07-07 21:51:57 +00:00
sizeof.go	test: correct sizeof.go.	2013-06-02 19:10:11 +02:00
slice3.go	cmd/gc, runtime: treat slices and strings like pointers in garbage collection	2014-08-25 14:38:19 -04:00
slice3err.go	test: match gccgo error messages	2013-12-12 17:18:12 -08:00
slicecap.go	cmd/gc, runtime: treat slices and strings like pointers in garbage collection	2014-08-25 14:38:19 -04:00
sliceopt.go	cmd/internal/gc: optimize slice + write barrier	2015-05-13 19:20:39 +00:00
solitaire.go	test/[n-z]*.go: add documentation	2012-02-24 11:48:19 +11:00
stack.go	test/[n-z]*.go: add documentation	2012-02-24 11:48:19 +11:00
string_lit.go	test: add []rune case to string_lit.go	2013-12-12 17:17:02 -08:00
stringrange.go	all: make Unicode surrogate halves illegal as UTF-8	2012-08-08 14:01:23 -07:00
struct0.go	test/[n-z]*.go: add documentation	2012-02-24 11:48:19 +11:00
switch3.go	cmd/gc: accept switches on comparable arrays.	2012-08-03 21:47:26 +02:00
switch4.go	cmd/gc: disallow fallthrough in final case of switch	2013-03-15 00:35:09 -04:00
switch.go	cmd/gc: disallow fallthrough in final case of switch	2013-03-15 00:35:09 -04:00
tinyfin.go	runtime: combine small NoScan allocations	2014-01-24 22:35:11 +04:00
torture.go	cmd/8g: don't allocate a register early for cap(CHAN).	2014-07-01 09:20:51 +02:00
turing.go	test/[n-z]*.go: add documentation	2012-02-24 11:48:19 +11:00
typecheck.go	cmd/gc: silence assignment errors to undefined symbols	2014-01-03 21:03:20 +01:00
typecheckloop.go	cmd/compile: convert typecheck_stack to []*Node	2015-09-06 23:50:51 +00:00
typeswitch1.go	test/[n-z]*.go: add documentation	2012-02-24 11:48:19 +11:00
typeswitch2.go	test/[n-z]*.go: add documentation	2012-02-24 11:48:19 +11:00
typeswitch3.go	test: match gccgo error messages	2012-09-28 08:30:30 -07:00
typeswitch.go	test/[n-z]*.go: add documentation	2012-02-24 11:48:19 +11:00
undef.go	test/[n-z]*.go: add documentation	2012-02-24 11:48:19 +11:00
utf.go	test/[n-z]*.go: add documentation	2012-02-24 11:48:19 +11:00
varerr.go	test/[n-z]*.go: add documentation	2012-02-24 11:48:19 +11:00
varinit.go	test/[n-z]*.go: add documentation	2012-02-24 11:48:19 +11:00
writebarrier.go	cmd/internal/gc: add missing write barrier in append(x, BigStructWithPointers)	2015-05-19 15:28:29 +00:00
zerodivide.go	test: ensure all failing tests exit nonzero.	2013-02-12 13:17:49 -05:00