FYI, we noticed the following commit (built with gcc-7):
commit: 8c7829b04c523cdc732cb77f59f03320e09f3386 ("mm: fix false-positive OVERCOMMIT_GUESS failures")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
in testcase: ltp
with following parameters:
disk: 1HDD
test: mm-01
test-description: The LTP testsuite contains a collection of tools for testing the Linux kernel and related features.
test-url: http://linux-test-project.github.io/
on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 4G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <[email protected]>
[ 554.112267 ] <<<test_start>>>
[ 554.112269 ]
[ 554.115806 ] tag=overcommit_memory01 stime=1558074982
[ 554.115809 ]
[ 554.119303 ] cmdline="overcommit_memory"
[ 554.119306 ]
[ 554.121962 ] contacts=""
[ 554.121965 ]
[ 554.124459 ] analysis=exit
[ 554.124463 ]
[ 554.127140 ] <<<test_output>>>
[ 554.127144 ]
[ 554.131401 ] tst_test.c:1096: INFO: Timeout per run is 0h 05m 00s
[ 554.131404 ]
[ 554.136248 ] overcommit_memory.c:117: INFO: MemTotal is 4033124 kB
[ 554.136251 ]
[ 554.141365 ] overcommit_memory.c:119: INFO: SwapTotal is 268435452 kB
[ 554.141368 ]
[ 554.146664 ] overcommit_memory.c:123: INFO: CommitLimit is 270452012 kB
[ 554.146666 ]
[ 554.151375 ] mem.c:814: INFO: set overcommit_ratio to 50
[ 554.151378 ]
[ 554.155796 ] mem.c:814: INFO: set overcommit_memory to 2
[ 554.155799 ]
[ 554.159951 ] overcommit_memory.c:190: INFO: malloc 538608648 kB failed
[ 554.159953 ]
[ 554.164801 ] overcommit_memory.c:211: PASS: alloc failed as expected
[ 554.164804 ]
[ 554.170196 ] overcommit_memory.c:190: INFO: malloc 270452012 kB failed
[ 554.170199 ]
[ 554.175344 ] overcommit_memory.c:211: PASS: alloc failed as expected
[ 554.175347 ]
[ 554.180932 ] overcommit_memory.c:186: INFO: malloc 134651878 kB successfully
[ 554.180935 ]
[ 554.186522 ] overcommit_memory.c:205: PASS: alloc passed as expected
[ 554.186524 ]
[ 554.191234 ] mem.c:814: INFO: set overcommit_memory to 0
[ 554.191237 ]
[ 554.196930 ] overcommit_memory.c:186: INFO: malloc 134734122 kB successfully
[ 554.196933 ]
[ 554.202738 ] overcommit_memory.c:205: PASS: alloc passed as expected
[ 554.202742 ]
[ 554.208563 ] overcommit_memory.c:190: INFO: malloc 538936488 kB failed
[ 554.208566 ]
[ 554.214355 ] overcommit_memory.c:211: PASS: alloc failed as expected
[ 554.214357 ]
[ 554.220506 ] overcommit_memory.c:186: INFO: malloc 272468576 kB successfully
[ 554.220509 ]
[ 554.226564 ] overcommit_memory.c:213: FAIL: alloc passed, expected to fail
[ 554.226568 ]
[ 554.231870 ] mem.c:814: INFO: set overcommit_memory to 1
[ 554.231873 ]
[ 554.237819 ] overcommit_memory.c:186: INFO: malloc 136234288 kB successfully
[ 554.237821 ]
[ 554.243711 ] overcommit_memory.c:205: PASS: alloc passed as expected
[ 554.243713 ]
[ 554.249791 ] overcommit_memory.c:186: INFO: malloc 272468576 kB successfully
[ 554.249794 ]
[ 554.255069 ] overcommit_memory.c:205: PASS: alloc passed as expected
[ 554.255073 ]
[ 554.261594 ] overcommit_memory.c:186: INFO: malloc 544937152 kB successfully
[ 554.261597 ]
[ 554.267855 ] overcommit_memory.c:205: PASS: alloc passed as expected
[ 554.267858 ]
[ 554.273445 ] mem.c:814: INFO: set overcommit_memory to 0
[ 554.273448 ]
[ 554.278882 ] mem.c:814: INFO: set overcommit_ratio to 50
[ 554.278885 ]
[ 554.282419 ]
[ 554.284170 ] Summary:
[ 554.284173 ]
[ 554.287476 ] passed 8
[ 554.287480 ]
[ 554.290740 ] failed 1
[ 554.290743 ]
[ 554.293971 ] skipped 0
[ 554.293974 ]
[ 554.297123 ] warnings 0
[ 554.297126 ]
[ 554.300746 ] <<<execution_status>>>
[ 554.300749 ]
[ 554.304489 ] initiation_status="ok"
[ 554.304492 ]
[ 554.309762 ] duration=0 termination_type=exited termination_id=1 corefile=no
[ 554.309765 ]
[ 554.313681 ] cutime=0 cstime=0
[ 554.313685 ]
[ 554.316880 ] <<<test_end>>>
To reproduce:
# build kernel
cd linux
cp config-5.1.0-10246-g8c7829b .config
make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 olddefconfig
make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 prepare
make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 modules_prepare
make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 SHELL=/bin/bash
make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 bzImage
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz
bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email
Thanks,
Rong Chen
----- Original Message -----
> FYI, we noticed the following commit (built with gcc-7):
>
> commit: 8c7829b04c523cdc732cb77f59f03320e09f3386 ("mm: fix false-positive
> OVERCOMMIT_GUESS failures")
This matches report from Naresh:
http://lists.linux.it/pipermail/ltp/2019-May/011962.html
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
>
> in testcase: ltp
> with following parameters:
>
> disk: 1HDD
> test: mm-01
>
> test-description: The LTP testsuite contains a collection of tools for
> testing the Linux kernel and related features.
> test-url: http://linux-test-project.github.io/
>
>
> on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 4G
>
> caused below changes (please refer to attached dmesg/kmsg for entire
> log/backtrace):
>
>
> If you fix the issue, kindly add following tag
> Reported-by: kernel test robot <[email protected]>
>
>
> [ 554.112267 ] <<<test_start>>>
> [ 554.112269 ]
> [ 554.115806 ] tag=overcommit_memory01 stime=1558074982
> [ 554.115809 ]
> [ 554.119303 ] cmdline="overcommit_memory"
> [ 554.119306 ]
> [ 554.121962 ] contacts=""
> [ 554.121965 ]
> [ 554.124459 ] analysis=exit
> [ 554.124463 ]
> [ 554.127140 ] <<<test_output>>>
> [ 554.127144 ]
> [ 554.131401 ] tst_test.c:1096: INFO: Timeout per run is 0h 05m 00s
> [ 554.131404 ]
> [ 554.136248 ] overcommit_memory.c:117: INFO: MemTotal is 4033124 kB
> [ 554.136251 ]
> [ 554.141365 ] overcommit_memory.c:119: INFO: SwapTotal is 268435452 kB
> [ 554.141368 ]
> [ 554.146664 ] overcommit_memory.c:123: INFO: CommitLimit is 270452012 kB
> [ 554.146666 ]
> [ 554.151375 ] mem.c:814: INFO: set overcommit_ratio to 50
> [ 554.151378 ]
> [ 554.155796 ] mem.c:814: INFO: set overcommit_memory to 2
> [ 554.155799 ]
> [ 554.159951 ] overcommit_memory.c:190: INFO: malloc 538608648 kB failed
> [ 554.159953 ]
> [ 554.164801 ] overcommit_memory.c:211: PASS: alloc failed as expected
> [ 554.164804 ]
> [ 554.170196 ] overcommit_memory.c:190: INFO: malloc 270452012 kB failed
> [ 554.170199 ]
> [ 554.175344 ] overcommit_memory.c:211: PASS: alloc failed as expected
> [ 554.175347 ]
> [ 554.180932 ] overcommit_memory.c:186: INFO: malloc 134651878 kB
> successfully
> [ 554.180935 ]
> [ 554.186522 ] overcommit_memory.c:205: PASS: alloc passed as expected
> [ 554.186524 ]
> [ 554.191234 ] mem.c:814: INFO: set overcommit_memory to 0
> [ 554.191237 ]
> [ 554.196930 ] overcommit_memory.c:186: INFO: malloc 134734122 kB
> successfully
> [ 554.196933 ]
> [ 554.202738 ] overcommit_memory.c:205: PASS: alloc passed as expected
> [ 554.202742 ]
> [ 554.208563 ] overcommit_memory.c:190: INFO: malloc 538936488 kB failed
> [ 554.208566 ]
> [ 554.214355 ] overcommit_memory.c:211: PASS: alloc failed as expected
> [ 554.214357 ]
> [ 554.220506 ] overcommit_memory.c:186: INFO: malloc 272468576 kB
> successfully
> [ 554.220509 ]
> [ 554.226564 ] overcommit_memory.c:213: FAIL: alloc passed, expected to fail
> [ 554.226568 ]
> [ 554.231870 ] mem.c:814: INFO: set overcommit_memory to 1
> [ 554.231873 ]
> [ 554.237819 ] overcommit_memory.c:186: INFO: malloc 136234288 kB
> successfully
> [ 554.237821 ]
> [ 554.243711 ] overcommit_memory.c:205: PASS: alloc passed as expected
> [ 554.243713 ]
> [ 554.249791 ] overcommit_memory.c:186: INFO: malloc 272468576 kB
> successfully
> [ 554.249794 ]
> [ 554.255069 ] overcommit_memory.c:205: PASS: alloc passed as expected
> [ 554.255073 ]
> [ 554.261594 ] overcommit_memory.c:186: INFO: malloc 544937152 kB
> successfully
> [ 554.261597 ]
> [ 554.267855 ] overcommit_memory.c:205: PASS: alloc passed as expected
> [ 554.267858 ]
> [ 554.273445 ] mem.c:814: INFO: set overcommit_memory to 0
> [ 554.273448 ]
> [ 554.278882 ] mem.c:814: INFO: set overcommit_ratio to 50
> [ 554.278885 ]
> [ 554.282419 ]
> [ 554.284170 ] Summary:
> [ 554.284173 ]
> [ 554.287476 ] passed 8
> [ 554.287480 ]
> [ 554.290740 ] failed 1
> [ 554.290743 ]
> [ 554.293971 ] skipped 0
> [ 554.293974 ]
> [ 554.297123 ] warnings 0
> [ 554.297126 ]
> [ 554.300746 ] <<<execution_status>>>
> [ 554.300749 ]
> [ 554.304489 ] initiation_status="ok"
> [ 554.304492 ]
> [ 554.309762 ] duration=0 termination_type=exited termination_id=1
> corefile=no
> [ 554.309765 ]
> [ 554.313681 ] cutime=0 cstime=0
> [ 554.313685 ]
> [ 554.316880 ] <<<test_end>>>
>
>
>
> To reproduce:
>
> # build kernel
> cd linux
> cp config-5.1.0-10246-g8c7829b .config
> make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 olddefconfig
> make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 prepare
> make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 modules_prepare
> make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 SHELL=/bin/bash
> make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 bzImage
>
>
> git clone https://github.com/intel/lkp-tests.git
> cd lkp-tests
> find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz
> bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached
> in this email
>
>
>
>
> Thanks,
> Rong Chen
>
>
>
> --
> Mailing list info: https://lists.linux.it/listinfo/ltp
>
Hi!
> commit: 8c7829b04c523cdc732cb77f59f03320e09f3386 ("mm: fix false-positive OVERCOMMIT_GUESS failures")
This has been reported on the LTP ML already, LTP tests needs to be
adjusted, see:
http://lists.linux.it/pipermail/ltp/2019-May/011962.html
--
Cyril Hrubis
[email protected]