* arm64: unhandled level 3 permission fault on ltp mmap16 test
@ 2016-05-19 5:34 fixed-term.Oleksij.Rempel
2016-05-19 9:14 ` Suzuki K Poulose
0 siblings, 1 reply; 4+ messages in thread
From: fixed-term.Oleksij.Rempel @ 2016-05-19 5:34 UTC (permalink / raw)
To: linux-arm-kernel
Hallo all,
if i run latest ltp tests on any of latest kernel version i get
fallowing warning:
root at rcar1:/opt/ltp# dmesg
root at rcar1:/opt/ltp# ./testcases/bin/mmap16
mmap16 0 TINFO : Found free device '/dev/loop0'
mmap16 0 TINFO : Formatting /dev/loop0 with ext4 opts='-b 1024'
extra opts='10240'
mke2fs 1.43-WIP (15-Mar-2016)
[ 889.736679] EXT4-fs (loop0): mounted filesystem with ordered data
mode. Opts: nodelalloc
[ 889.843995] mmap16[2164]: unhandled level 3 permission fault (7) at
0x7f8397d400, esr 0x9200004f
[ 889.852807] pgd = ffffffc00b342000
[ 889.856239] [7f8397d400] *pgd=0000000052977003,
*pud=0000000052977003, *pmd=0000000053a8d003, *pte3
[ 889.866719]
[ 889.868223] CPU: 0 PID: 2164 Comm: mmap16 Not tainted
4.4.0-10183-g20698ed #9
[ 889.875361] Hardware name: Renesas Salvator-X board based on r8a7795 (DT)
[ 889.882152] task: ffffffc5ba52d400 ti: ffffffc00a998000 task.ti:
ffffffc00a998000
[ 889.889642] PC is at 0x402ed8
[ 889.892612] LR is at 0x402eb4
[ 889.895582] pc : [<0000000000402ed8>] lr : [<0000000000402eb4>]
pstate: 20000000
[ 889.902978] sp : 0000007fe744fc80
[ 889.906293] x29: 0000007fe744fcb0 x28: 0000000000000000
[ 889.911626] x27: 0000000000000000 x26: 000000000040adc0
[ 889.916952] x25: 0000007f8397d000 x24: 000000000041f648
[ 889.922279] x23: 0000007f8397d000 x22: 0000000000000061
[ 889.927611] x21: 0000000000000003 x20: 000000000040a000
[ 889.932937] x19: 000000000040ad78 x18: 0000000000000001
[ 889.938263] x17: 0000007f838a6760 x16: 000000000041f570
[ 889.943593] x15: 0000007f837e41c0 x14: 0000007f83984000
[ 889.948919] x13: 0000007fe744fc50 x12: 0000007f8396a63c
[ 889.954246] x11: 0000007fe744fc40 x10: 000000000000000a
[ 889.959575] x9 : 00000000000f4240 x8 : 0000000000000062
[ 889.964903] x7 : 0000000000000000 x6 : 0000000000000000
[ 889.970228] x5 : 0000000000000000 x4 : 0000000000001000
[ 889.975559] x3 : 0000007fe744fc30 x2 : 0000000000000061
[ 889.980885] x1 : 0000007f8397d400 x0 : 0000007f8397e000
[ 889.986210]
[ 890.944664] mmap16[2165]: unhandled level 3 permission fault (7) at
0x7f8397d400, esr 0x9200004f
[ 890.953483] pgd = ffffffc00b314000
[ 890.956916] [7f8397d400] *pgd=000000005382b003,
*pud=000000005382b003, *pmd=000000005281f003, *pte3
[ 890.967403]
[ 890.968898] CPU: 2 PID: 2165 Comm: mmap16 Not tainted
4.4.0-10183-g20698ed #9
[ 890.976039] Hardware name: Renesas Salvator-X board based on r8a7795 (DT)
[ 890.982833] task: ffffffc00a913c00 ti: ffffffc00a800000 task.ti:
ffffffc00a800000
[ 890.990325] PC is at 0x402ed8
[ 890.993294] LR is at 0x402eb4
[ 890.996267] pc : [<0000000000402ed8>] lr : [<0000000000402eb4>]
pstate: 20000000
[ 891.003663] sp : 0000007fe744fc80
[ 891.006972] x29: 0000007fe744fcb0 x28: 0000000000000000
[ 891.012305] x27: 0000000000000000 x26: 000000000040adc0
[ 891.017635] x25: 0000007f8397d000 x24: 000000000041f648
[ 891.022964] x23: 0000007f8397d000 x22: 0000000000000061
[ 891.028297] x21: 0000000000000003 x20: 000000000040a000
[ 891.033625] x19: 000000000040ad78 x18: 0000000000000001
[ 891.038954] x17: 0000007f838a6760 x16: 000000000041f570
[ 891.044305] x15: 0000007f837e3ff4 x14: 0000007f83984cc0
[ 891.049644] x13: 0000007fe744fc50 x12: 0000000000000000
[ 891.054976] x11: 0000000000000000 x10: 000000000000000a
[ 891.060306] x9 : 00000000000f4240 x8 : 0000000000000062
[ 891.065634] x7 : 0000000000000000 x6 : 0000000000000000
[ 891.070962] x5 : 0000000000000000 x4 : 0000000000001000
[ 891.076296] x3 : 0000007fe744fc30 x2 : 0000000000000061
[ 891.081625] x1 : 0000007f8397d400 x0 : 0000007f8397e000
[ 891.086954]
[188/1931]
[ 892.576092] mmap16[2166]: unhandled level 3 permission fault (7) at
0x7f8397d400, esr 0x9200004f
[ 892.584918] pgd = ffffffc5bbc25000
[ 892.588352] [7f8397d400] *pgd=0000000603d6d003,
*pud=0000000603d6d003, *pmd=0000000603661003, *pte3
[ 892.598831]
[ 892.600333] CPU: 2 PID: 2166 Comm: mmap16 Not tainted
4.4.0-10183-g20698ed #9
[ 892.607474] Hardware name: Renesas Salvator-X board based on r8a7795 (DT)
[ 892.614265] task: ffffffc00a913000 ti: ffffffc4f53e0000 task.ti:
ffffffc4f53e0000
[ 892.621752] PC is at 0x402ed8
[ 892.624720] LR is at 0x402eb4
[ 892.627689] pc : [<0000000000402ed8>] lr : [<0000000000402eb4>]
pstate: 20000000
[ 892.635083] sp : 0000007fe744fc80
[ 892.638397] x29: 0000007fe744fcb0 x28: 0000000000000000
[ 892.643728] x27: 0000000000000000 x26: 000000000040adc0
[ 892.649053] x25: 0000007f8397d000 x24: 000000000041f648
[ 892.654379] x23: 0000007f8397d000 x22: 0000000000000061
[ 892.659709] x21: 0000000000000003 x20: 000000000040a000
[ 892.665034] x19: 000000000040ad78 x18: 0000000000000001
[ 892.670361] x17: 0000007f838a6760 x16: 000000000041f570
[ 892.675689] x15: 0000007f837e3ff4 x14: 0000007f83984cc0
[ 892.681013] x13: 4010040140100401 x12: 0010000000000000
[ 892.686338] x11: 4000000000000000 x10: 000000000000000a
[ 892.691668] x9 : 00000000000f4240 x8 : 0000000000000062
[ 892.696993] x7 : 0000000000000000 x6 : 0000000000000000
[ 892.702318] x5 : 0000000000000000 x4 : 0000000000001000
[ 892.707647] x3 : 0000007fe744fc30 x2 : 0000000000000061
[ 892.712971] x1 : 0000007f8397d400 x0 : 0000007f8397e000
[ 892.718296]
[ 893.699683] mmap16[2167]: unhandled level 3 permission fault (7) at
0x7f8397d400, esr 0x9200004f
[ 893.708500] pgd = ffffffc00b3f8000
[ 893.711927] [7f8397d400] *pgd=0000000053108003,
*pud=0000000053108003, *pmd=0000000053120003, *pte3
[ 893.722412]
[ 893.723914] CPU: 0 PID: 2167 Comm: mmap16 Not tainted
4.4.0-10183-g20698ed #9
[ 893.731058] Hardware name: Renesas Salvator-X board based on r8a7795 (DT)
[ 893.737850] task: ffffffc5ba52e000 ti: ffffffc00b168000 task.ti:
ffffffc00b168000
[ 893.745341] PC is at 0x402ed8
[ 893.748313] LR is at 0x402eb4
[ 893.751284] pc : [<0000000000402ed8>] lr : [<0000000000402eb4>]
pstate: 20000000
[ 893.758680] sp : 0000007fe744fc80
[ 893.761996] x29: 0000007fe744fcb0 x28: 0000000000000000
[ 893.767329] x27: 0000000000000000 x26: 000000000040adc0
[ 893.772657] x25: 0000007f8397d000 x24: 000000000041f648
[ 893.777982] x23: 0000007f8397d000 x22: 0000000000000061
[ 893.783312] x21: 0000000000000003 x20: 000000000040a000
[ 893.788639] x19: 000000000040ad78 x18: 0000000000000001
[ 893.793965] x17: 0000007f838a6760 x16: 000000000041f570
[ 893.799303] x15: 0000007f837e3ff4 x14: 0000007f83984cc0
[ 893.804630] x13: 4010040140100401 x12: 0010000000000000
[ 893.809956] x11: 4000000000000000 x10: 000000000000000a
[ 893.815286] x9 : 00000000000f4240 x8 : 0000000000000062
[ 893.820641] x7 : 0000000000000000 x6 : 0000000000000000
[ 893.825971] x5 : 0000000000000000 x4 : 0000000000001000
[ 893.831301] x3 : 0000007fe744fc30 x2 : 0000000000000061
[ 893.836628] x1 : 0000007f8397d400 x0 : 0000007f8397e000
[ 893.841953]
[ 894.640420] mmap16[2168]: unhandled level 3 permission fault (7) at
0x7f8397d400, esr 0x9[133/1931]
[ 894.649251] pgd = ffffffc5bba23000
[ 894.652686] [7f8397d400] *pgd=0000000603530003,
*pud=0000000603530003, *pmd=0000000603a83003, *pte3
[ 894.663163]
[ 894.664671] CPU: 1 PID: 2168 Comm: mmap16 Not tainted
4.4.0-10183-g20698ed #9
[ 894.671813] Hardware name: Renesas Salvator-X board based on r8a7795 (DT)
[ 894.678603] task: ffffffc5ba529800 ti: ffffffc4f53e0000 task.ti:
ffffffc4f53e0000
[ 894.686093] PC is at 0x402ed8
[ 894.689062] LR is at 0x402eb4
[ 894.692032] pc : [<0000000000402ed8>] lr : [<0000000000402eb4>]
pstate: 20000000
[ 894.699430] sp : 0000007fe744fc80
[ 894.702738] x29: 0000007fe744fcb0 x28: 0000000000000000
[ 894.708072] x27: 0000000000000000 x26: 000000000040adc0
[ 894.713399] x25: 0000007f8397d000 x24: 000000000041f648
[ 894.718727] x23: 0000007f8397d000 x22: 0000000000000061
[ 894.724059] x21: 0000000000000003 x20: 000000000040a000
[ 894.729386] x19: 000000000040ad78 x18: 0000000000000001
[ 894.734712] x17: 0000007f838a6760 x16: 000000000041f570
[ 894.740043] x15: 0000007f837e3ff4 x14: 0000007f83984cc0
[ 894.745370] x13: 4010040140100401 x12: 0010000000000000
[ 894.750697] x11: 4000000000000000 x10: 000000000000000a
[ 894.756028] x9 : 00000000000f4240 x8 : 0000000000000062
[ 894.761353] x7 : 0000000000000000 x6 : 0000000000000000
[ 894.766681] x5 : 0000000000000000 x4 : 0000000000001000
[ 894.772017] x3 : 0000007fe744fc30 x2 : 0000000000000061
[ 894.777343] x1 : 0000007f8397d400 x0 : 0000007f8397e000
[ 894.782675]
[ 895.880198] mmap16[2169]: unhandled level 3 permission fault (7) at
0x7f8397d400, esr 0x9200004f
[ 895.889018] pgd = ffffffc5ba6be000
[ 895.892447] [7f8397d400] *pgd=00000006026bd003,
*pud=00000006026bd003, *pmd=00000006024b3003, *pte3
[ 895.902929]
[ 895.904430] CPU: 2 PID: 2169 Comm: mmap16 Not tainted
4.4.0-10183-g20698ed #9
[ 895.911571] Hardware name: Renesas Salvator-X board based on r8a7795
(DT) [101/1931]
[ 895.918361] task: ffffffc5ba67d400 ti: ffffffc5bbd8c000 task.ti:
ffffffc5bbd8c000
[ 895.925853] PC is at 0x402ed8
[ 895.928822] LR is at 0x402eb4
[ 895.931792] pc : [<0000000000402ed8>] lr : [<0000000000402eb4>]
pstate: 20000000
[ 895.939186] sp : 0000007fe744fc80
[ 895.942502] x29: 0000007fe744fcb0 x28: 0000000000000000
[ 895.947835] x27: 0000000000000000 x26: 000000000040adc0
[ 895.953161] x25: 0000007f8397d000 x24: 000000000041f648
[ 895.958488] x23: 0000007f8397d000 x22: 0000000000000061
[ 895.963817] x21: 0000000000000003 x20: 000000000040a000
[ 895.969142] x19: 000000000040ad78 x18: 0000000000000001
[ 895.974469] x17: 0000007f838a6760 x16: 000000000041f570
[ 895.979799] x15: 0000007f837e3ff4 x14: 0000007f83984cc0
[ 895.985124] x13: 4010040140100401 x12: 0010000000000000
[ 895.990451] x11: 4000000000000000 x10: 000000000000000a
[ 895.995781] x9 : 00000000000f4240 x8 : 0000000000000062
[ 896.001107] x7 : 0000000000000000 x6 : 0000000000000000
[ 896.006433] x5 : 0000000000000000 x4 : 0000000000001000
[ 896.011763] x3 : 0000007fe744fc30 x2 : 0000000000000061
[ 896.017089] x1 : 0000007f8397d400 x0 : 0000007f8397e000
[ 896.022416]
[ 896.962641] mmap16[2170]: unhandled level 3 permission fault (7) at
0x7f8397d400, esr 0x9200004f
[ 896.971470] pgd = ffffffc00b117000
[ 896.974872] [7f8397d400] *pgd=000000005311d003,
*pud=000000005311d003, *pmd=0000000053137003, *pte3
[ 896.985375]
[ 896.986869] CPU: 1 PID: 2170 Comm: mmap16 Not tainted
4.4.0-10183-g20698ed #9
[ 896.994011] Hardware name: Renesas Salvator-X board based on r8a7795 (DT)
[ 897.000804] task: ffffffc5ba678c00 ti: ffffffc00a800000 task.ti:
ffffffc00a800000
[ 897.008295] PC is at 0x402ed8
[ 897.011265] LR is at 0x402eb4
[ 897.014228] pc : [<0000000000402ed8>] lr : [<0000000000402eb4>]
pstate: 20000000
[ 897.011265] LR is at 0x402eb4
[71/1931]
[ 897.014228] pc : [<0000000000402ed8>] lr : [<0000000000402eb4>]
pstate: 20000000
[ 897.021625] sp : 0000007fe744fc80
[ 897.024942] x29: 0000007fe744fcb0 x28: 0000000000000000
[ 897.030270] x27: 0000000000000000 x26: 000000000040adc0
[ 897.035601] x25: 0000007f8397d000 x24: 000000000041f648
[ 897.040927] x23: 0000007f8397d000 x22: 0000000000000061
[ 897.046255] x21: 0000000000000003 x20: 000000000040a000
[ 897.051587] x19: 000000000040ad78 x18: 0000000000000001
[ 897.056914] x17: 0000007f838a6760 x16: 000000000041f570
[ 897.062241] x15: 0000007f837e3ff4 x14: 0000007f83984cc0
[ 897.067572] x13: 4010040140100401 x12: 0010000000000000
[ 897.072898] x11: 4000000000000000 x10: 000000000000000a
[ 897.078225] x9 : 00000000000f4240 x8 : 0000000000000062
[ 897.083556] x7 : 0000000000000000 x6 : 0000000000000000
[ 897.088882] x5 : 0000000000000000 x4 : 0000000000001000
[ 897.094209] x3 : 0000007fe744fc30 x2 : 0000000000000061
[ 897.099540] x1 : 0000007f8397d400 x0 : 0000007f8397e000
[ 897.104874]
[ 897.937392] mmap16[2171]: unhandled level 3 permission fault (7) at
0x7f8397d400, esr 0x9200004f
[ 897.946215] pgd = ffffffc5bbf8a000
[ 897.949639] [7f8397d400] *pgd=000000060379a003,
*pud=000000060379a003, *pmd=0000000603a80003, *pte3
[ 897.960121]
[ 897.961615] CPU: 2 PID: 2171 Comm: mmap16 Not tainted
4.4.0-10183-g20698ed #9
[ 897.968752] Hardware name: Renesas Salvator-X board based on r8a7795 (DT)
[ 897.975546] task: ffffffc5ba67d400 ti: ffffffc5bbd8c000 task.ti:
ffffffc5bbd8c000
[ 897.983036] PC is at 0x402ed8
[ 897.986004] LR is at 0x402eb4
[ 897.988974] pc : [<0000000000402ed8>] lr : [<0000000000402eb4>]
pstate: 20000000
[ 897.996370] sp : 0000007fe744fc80
[ 897.999686] x29: 0000007fe744fcb0 x28: 0000000000000000
[ 898.005014] x27: 0000000000000000 x26: 000000000040adc0
.............snip................
[ 900.078262] x5 : 0000000000000000 x4 : 0000000000001000
[ 900.083609] x3 : 0000007fe744fc30 x2 : 0000000000000061
[ 900.088943] x1 : 0000007f8397d400 x0 : 0000007f8397e000
[ 900.094275]
mmap16 1 TPASS : Bug is not reproduced!
Can some one please help me to understand this? If i see it correctly,
some thing wrong happened by level 3 address translation. But i have no
idea how to solve it (if it should be solved)
--
Best regards,
Oleksij Rempel
CM-AI/ECO3
Tel.: +49(5121)49-2962
^ permalink raw reply [flat|nested] 4+ messages in thread* arm64: unhandled level 3 permission fault on ltp mmap16 test
2016-05-19 5:34 arm64: unhandled level 3 permission fault on ltp mmap16 test fixed-term.Oleksij.Rempel
@ 2016-05-19 9:14 ` Suzuki K Poulose
2016-05-19 9:22 ` fixed-term.Oleksij.Rempel
2016-05-19 10:55 ` Catalin Marinas
0 siblings, 2 replies; 4+ messages in thread
From: Suzuki K Poulose @ 2016-05-19 9:14 UTC (permalink / raw)
To: linux-arm-kernel
On 19/05/16 06:34, fixed-term.Oleksij.Rempel wrote:
> Hallo all,
>
> if i run latest ltp tests on any of latest kernel version i get
> fallowing warning:
>
> root at rcar1:/opt/ltp# dmesg
> root at rcar1:/opt/ltp# ./testcases/bin/mmap16
> mmap16 0 TINFO : Found free device '/dev/loop0'
> mmap16 0 TINFO : Formatting /dev/loop0 with ext4 opts='-b 1024'
> extra opts='10240'
> mke2fs 1.43-WIP (15-Mar-2016)
> [ 889.736679] EXT4-fs (loop0): mounted filesystem with ordered data
> mode. Opts: nodelalloc
> [ 889.843995] mmap16[2164]: unhandled level 3 permission fault (7) at
> 0x7f8397d400, esr 0x9200004f
IIRC, this is expected. The test performs the access on purpose. It spawns
a child which does this access and expects SIGBUS to be delivered to it. The
parent makes sure that the SIGBUS is delivered to by wait()-ing for it.
See :
/*
* If child process was killed by SIGBUS, bug is not reproduced.
*/
if (!WIFSIGNALED(status) || WTERMSIG(status) != SIGBUS) {
tst_brkm(TBROK | TERRNO, cleanup,
"child process terminate unexpectedly");
}
>
> Can some one please help me to understand this? If i see it correctly,
> some thing wrong happened by level 3 address translation. But i have no
> idea how to solve it (if it should be solved)
On arm64 we print unhandled faults to give enough information to debug the
problem, which is why you see those messages in dmesg.
So, you can ignore those messages as long as the faults are generated by
mmap16 and thetest reports success.
Suzuki
^ permalink raw reply [flat|nested] 4+ messages in thread* arm64: unhandled level 3 permission fault on ltp mmap16 test
2016-05-19 9:14 ` Suzuki K Poulose
@ 2016-05-19 9:22 ` fixed-term.Oleksij.Rempel
2016-05-19 10:55 ` Catalin Marinas
1 sibling, 0 replies; 4+ messages in thread
From: fixed-term.Oleksij.Rempel @ 2016-05-19 9:22 UTC (permalink / raw)
To: linux-arm-kernel
On 19.05.2016 11:14, Suzuki K Poulose wrote:
> On 19/05/16 06:34, fixed-term.Oleksij.Rempel wrote:
>> Hallo all,
>>
>> if i run latest ltp tests on any of latest kernel version i get
>> fallowing warning:
>>
>> root at rcar1:/opt/ltp# dmesg
>> root at rcar1:/opt/ltp# ./testcases/bin/mmap16
>> mmap16 0 TINFO : Found free device '/dev/loop0'
>> mmap16 0 TINFO : Formatting /dev/loop0 with ext4 opts='-b 1024'
>> extra opts='10240'
>> mke2fs 1.43-WIP (15-Mar-2016)
>> [ 889.736679] EXT4-fs (loop0): mounted filesystem with ordered data
>> mode. Opts: nodelalloc
>> [ 889.843995] mmap16[2164]: unhandled level 3 permission fault (7) at
>> 0x7f8397d400, esr 0x9200004f
>
> IIRC, this is expected. The test performs the access on purpose. It spawns
> a child which does this access and expects SIGBUS to be delivered to it.
> The
> parent makes sure that the SIGBUS is delivered to by wait()-ing for it.
>
> See :
> /*
> * If child process was killed by SIGBUS, bug is not
> reproduced.
> */
> if (!WIFSIGNALED(status) || WTERMSIG(status) != SIGBUS) {
> tst_brkm(TBROK | TERRNO, cleanup,
> "child process terminate unexpectedly");
> }
>
>>
>> Can some one please help me to understand this? If i see it correctly,
>> some thing wrong happened by level 3 address translation. But i have no
>> idea how to solve it (if it should be solved)
>
> On arm64 we print unhandled faults to give enough information to debug the
> problem, which is why you see those messages in dmesg.
>
> So, you can ignore those messages as long as the faults are generated by
> mmap16 and thetest reports success.
OK, thank you!
^ permalink raw reply [flat|nested] 4+ messages in thread* arm64: unhandled level 3 permission fault on ltp mmap16 test
2016-05-19 9:14 ` Suzuki K Poulose
2016-05-19 9:22 ` fixed-term.Oleksij.Rempel
@ 2016-05-19 10:55 ` Catalin Marinas
1 sibling, 0 replies; 4+ messages in thread
From: Catalin Marinas @ 2016-05-19 10:55 UTC (permalink / raw)
To: linux-arm-kernel
On Thu, May 19, 2016 at 10:14:17AM +0100, Suzuki K. Poulose wrote:
> On 19/05/16 06:34, fixed-term.Oleksij.Rempel wrote:
> >if i run latest ltp tests on any of latest kernel version i get
> >fallowing warning:
> >
> >root at rcar1:/opt/ltp# dmesg
> >root at rcar1:/opt/ltp# ./testcases/bin/mmap16
> >mmap16 0 TINFO : Found free device '/dev/loop0'
> >mmap16 0 TINFO : Formatting /dev/loop0 with ext4 opts='-b 1024'
> >extra opts='10240'
> >mke2fs 1.43-WIP (15-Mar-2016)
> >[ 889.736679] EXT4-fs (loop0): mounted filesystem with ordered data
> >mode. Opts: nodelalloc
> >[ 889.843995] mmap16[2164]: unhandled level 3 permission fault (7) at
> >0x7f8397d400, esr 0x9200004f
>
> IIRC, this is expected. The test performs the access on purpose. It spawns
> a child which does this access and expects SIGBUS to be delivered to it. The
> parent makes sure that the SIGBUS is delivered to by wait()-ing for it.
>
> See :
> /*
> * If child process was killed by SIGBUS, bug is not reproduced.
> */
> if (!WIFSIGNALED(status) || WTERMSIG(status) != SIGBUS) {
> tst_brkm(TBROK | TERRNO, cleanup,
> "child process terminate unexpectedly");
> }
>
> >Can some one please help me to understand this? If i see it correctly,
> >some thing wrong happened by level 3 address translation. But i have no
> >idea how to solve it (if it should be solved)
>
> On arm64 we print unhandled faults to give enough information to debug the
> problem, which is why you see those messages in dmesg.
>
> So, you can ignore those messages as long as the faults are generated by
> mmap16 and thetest reports success.
You can disable it with:
sysctl debug.exception-trace=0
(or via the sysctl files like /etc/sysctl.d/99-sysctl.conf)
--
Catalin
^ permalink raw reply [flat|nested] 4+ messages in thread
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2016-05-19 5:34 arm64: unhandled level 3 permission fault on ltp mmap16 test fixed-term.Oleksij.Rempel
2016-05-19 9:14 ` Suzuki K Poulose
2016-05-19 9:22 ` fixed-term.Oleksij.Rempel
2016-05-19 10:55 ` Catalin Marinas
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