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Subjectmmstress[1309]: segfault at 7f3d71a36ee8 ip 00007f3d77132bdf sp 00007f3d71a36ee8 error 4 in libc-2.27.so[7f3d77058000+1aa000]
LTP mm mtest05 (mmstress), mtest06_3 and mallocstress01 (mallocstress) tested on
x86 KASAN enabled build. But tests are getting PASS on Non KASAN builds.
This regression started happening from next-20201015 nowards

There are few more regression on linux next,
ltp-cve-tests:
* cve-2015-7550
ltp-math-tests:
* float_bessel
* float_exp_log
* float_iperb
* float_power
* float_trigo
ltp-mm-tests:
* mallocstress01
* mtest05
* mtest06_3
ltp-syscalls-tests:
* clone08
* clone301
* fcntl34
* fcntl34_64
* fcntl36
* fcntl36_64
* keyctl02
* rt_tgsigqueueinfo01

metadata:
git branch: master
git repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next
git describe: next-20201015
kernel-config:
https://builds.tuxbuild.com/SCI7Xyjb7V2NbfQ2lbKBZw/kernel.config

steps to reproduce:
# boot x86_64 with KASAN enabled kernel and run tests
# cd /opt/ltp/testcases/bin
# ./mmstress
# ./mmap3 -x 0.002 -p
# ./mallocstress

mtest05 (mmstress) :
--------------------
mmstress 0 TINFO : run mmstress -h for all options
mmstress 0 TINFO : test1: Test case tests the race condition
between simultaneous read faults in the same address space.
[ 279.469207] mmstress[1309]: segfault at 7f3d71a36ee8 ip
00007f3d77132bdf sp 00007f3d71a36ee8 error 4 in
libc-2.27.so[7f3d77058000+1aa000]
[ 279.469305] audit: type=1701 audit(1602818315.656:3):
auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=1307
comm=\"mmstress\" exe=\"/opt/ltp/testcases/bin/mmstress\" sig=11 res=1
[ 279.481636] Code: 2d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f
84 00 00 00 00 00 0f 1f 44 00 00 b8 18 00 00 00 0f 05 48 3d 01 f0 ff
ff 73 01 <c3> 48 8b 0d 91 22 2d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e
0f 1f
[ 279.498212] mmstress[1311]: segfault at 7f3d70a34ee8 ip
00007f3d77132bdf sp 00007f3d70a34ee8 error 4 in
libc-2.27.so[7f3d77058000+1aa000]
[ 279.516839] Code: 2d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f
84 00 00 00 00 00 0f 1f 44 00 00 b8 18 00 00 00 0f 05 48 3d 01 f0 ff
ff 73 01 <c3> 48 8b 0d 91 22 2d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e
0f 1f
tst_test.c:1246: INFO: Timeout per run is 0h 15m 00s
tst_test.c:1246: INFO: Timeout per run is 0h 09m 00s
tst_test.c:1291: BROK: Test killed by SIGBUS!

mtest06_3 (mmap3 -x 0.002 -p) :
-------------------------------
mmap3.c:154: INFO: Seed 22
mmap3.c:155: INFO: Number of loops 1000
mmap3.c:156: INFO: Number of threads 40
mmap3.c:157: INFO: MAP[ 286.657788] mmap3[1350]: segfault at
7f12179d4680 ip 00007f121859951d sp 00007f12179d1e10 error 6 in
libpthread-2.27.so[7f1218589000+19000]
_PRIVATE = 1
mm[ 286.671184] Code: c4 10 5b 5d 41 5c c3 66 0f 1f 44 00 00 48 8b 15
99 8a 20 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff c3 48 8b 15 85 8a 20
00 f7 d8 <64> 89 02 48 c7 c0 ff ff ff ff eb b6 0f 1f 80 00 00 00 00 b8
01 00
[ 286.677386] audit: type=1701 audit(1602818322.844:6):
auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=1348
comm=\"mmap3\" exe=\"/opt/ltp/testcases/bin/mmap3\" sig=11 res=1
ap3.c:158: INFO: Execution time 0.002000H

mallocstress01 (mallocstress) :
------------------------------
pid[1496]: shmat_rd_wr(): shmget():success got segment id 32830
pid[1496]: do_shmat_shmadt(): got shmat address = 0x7f301eae9000
pid[1496]: shmat_rd_wr(): shmget():success got segment id 328[
291.851376] mallocstress[1502]: segfault at 0 ip 0000000000000000 sp
00007f80dea3ec50 error 14
30
pid[1496]: d[ 291.851466] mallocstress[1507]: segfault at
7f80dc239c98 ip 00007f80df2bf81c sp 00007f80dc239c98 error 4
o_shmat_shmadt()[ 291.851485] mallocstress[1505]: segfault at
7f80dd23bc38 ip 00007f80df33fe93 sp 00007f80dd23bc38 error 4
[ 291.851490] Code: 00 00 00 00 0f 1f 00 41 52 52 4d 31 d2 ba 02 00
00 00 be 80 00 00 00 39 d0 75 07 b8 ca 00 00 00 0f 05 89 d0 87 07 85
c0 75 f1 <5a> 41 5a c3 66 0f 1f 84 00 00 00 00 00 56 52 c7 07 00 00 00
00 be
: got shmat addr[ 291.851565] audit: type=1701
audit(1602818328.038:7): auid=4294967295 uid=0 gid=0 ses=4294967295
subj=kernel pid=1500 comm=\"mallocstress\"
exe=\"/opt/ltp/testcases/bin/mallocstress\" sig=11 res=1
[ 291.852984] mallocstress[1504]: segfault at 7f80dda3cc38 ip
00007f80df33fe93 sp 00007f80dda3cc38 error 4
ess = 0x7f301e85[ 291.852988] Code: 00 00 00 00 0f 1f 00 41 52 52 4d
31 d2 ba 02 00 00 00 be 80 00 00 00 39 d0 75 07 b8 ca 00 00 00 0f 05
89 d0 87 07 85 c0 75 f1 <5a> 41 5a c3 66 0f 1f 84 00 00 00 00 00 56 52
c7 07 00 00 00 00 be
[ 291.853045] audit: type=1701 audit(1602818328.040:8):
auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=1500
comm=\"mallocstress\" exe=\"/opt/ltp/testcases/bin/mallocstress\"
sig=11 res=1
5000
tst_test.c[ 291.860373] Code: Unable to access opcode bytes at RIP
0xffffffffffffffd6.
[ 291.860453] mallocstress[1506]: segfault at 7f80dca3ac98 ip
00007f80df2bf81c sp 00007f80dca3ac98 error 4
:1246: INFO: Tim[ 291.860654] audit: type=1701
audit(1602818328.047:9): auid=4294967295 uid=0 gid=0 ses=4294967295
subj=kernel pid=1500 comm=\"mallocstress\"
exe=\"/opt/ltp/testcases/bin/mallocstress\" sig=11 res=1
[ 291.871350]
eout per run is [ 291.871397] mallocstress[1501]: segfault at 0 ip
0000000000000000 sp 00007f80df23fc50 error 14
[ 291.871401] Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6.
0h 30m 00s
[ 291.871467] audit: type=1701 audit(1602818328.058:10):
auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=1500
comm=\"mallocstress\" exe=\"/opt/ltp/testcases/bin/mallocstress\"
sig=11 res=1
[ 291.882113] in libc-2.27.so[7f80df241000+1aa000]
[ 291.900984] Code: ff 48 85 c0 75 d8 0f 1f 84 00 00 00 00 00 8b 35
26 11 33 00 48 83 c1 10 85 f6 0f 85 42 01 00 00 48 81 c4 88 00 00 00
48 89 c8 <5b> 5d 41 5c 41 5d 41 5e 41 5f c3 66 0f 1f 84 00 00 00 00 00
4c 8b
[ 291.919351] Code: ff 48 85 c0 75 d8 0f 1f 84 00 00 00 00 00 8b 35
26 11 33 00 48 83 c1 10 85 f6 0f 85 42 01 00 00 48 81 c4 88 00 00 00
48 89 c8 <5b> 5d 41 5c 41 5d 41 5e 41 5f c3 66 0f 1f 84 00 00 00 00 00
4c 8b

Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>

full test log link,
https://lkft.validation.linaro.org/scheduler/job/1844090

--
Linaro LKFT
https://lkft.linaro.org

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