------- Comment From <email address hidden> 2017-05-26 05:50 EDT------- Issue is observed even on Ubuntu 16.04.03.
root@ltc-firep2:/sys/fs/pstore# ls -lrt total 0 -r--r--r-- 1 root root 3909 May 5 04:21 dmesg-nvram-1 -r--r--r-- 1 root root 4080 May 26 02:59 powerpc-opal-nvram-8 -r--r--r-- 1 root root 65520 May 26 02:59 powerpc-common-nvram-6
root@ltc-firep2:/sys/fs/pstore# ls -lrt total 0 -r--r--r-- 1 root root 3909 May 5 04:21 dmesg-nvram-1 -r--r--r-- 1 root root 4080 May 26 02:59 powerpc-opal-nvram-8 -r--r--r-- 1 root root 65520 May 26 02:59 powerpc-common-nvram-6 root@ltc-firep2:/sys/fs/pstore# tail dmesg-nvram-1 <4>[ 351.724539] LR [c0000000005dd79c] write_sysrq_trigger+0x10c/0x230 <4>[ 351.724583] Call Trace: <4>[ 351.724603] [c000000fd79b7cf0] [c0000000005dd77c] write_sysrq_trigger+0xec/0x230 (unreliable) <4>[ 351.724677] [c000000fd79b7d90] [c0000000003dabd4] proc_reg_write+0x84/0x120 <4>[ 351.724733] [c000000fd79b7dd0] [c000000000327520] SyS_write+0x150/0x400 <4>[ 351.724789] [c000000fd79b7e30] [c00000000000a17c] system_call+0x38/0xb4 <4>[ 351.724843] Instruction dump: <4>[ 351.724870] 409effb8 7fc3f378 4bfff381 4bffffac 3c4c00c1 384205c0 3d42fff2 394ac530 <4>[ 351.724963] 39200001 912a0000 7c0004ac 39400000 <992a0000> 4e800020 60000000 60420000 <4>[ 351.725055] ---[ end trace 9de875846d84dfcd ]---
root@ltc-firep2:/sys/fs/pstore# ls -lrt total 0 -r--r--r-- 1 root root 3909 May 5 04:21 dmesg-nvram-1 -r--r--r-- 1 root root 4080 May 26 05:31 powerpc-opal-nvram-8 -r--r--r-- 1 root root 65520 May 26 05:31 powerpc-common-nvram-6 root@ltc-firep2:/sys/fs/pstore# tail dmesg-nvram-1 <4>[ 351.724539] LR [c0000000005dd79c] write_sysrq_trigger+0x10c/0x230 <4>[ 351.724583] Call Trace: <4>[ 351.724603] [c000000fd79b7cf0] [c0000000005dd77c] write_sysrq_trigger+0xec/0x230 (unreliable) <4>[ 351.724677] [c000000fd79b7d90] [c0000000003dabd4] proc_reg_write+0x84/0x120 <4>[ 351.724733] [c000000fd79b7dd0] [c000000000327520] SyS_write+0x150/0x400 <4>[ 351.724789] [c000000fd79b7e30] [c00000000000a17c] system_call+0x38/0xb4 <4>[ 351.724843] Instruction dump: <4>[ 351.724870] 409effb8 7fc3f378 4bfff381 4bffffac 3c4c00c1 384205c0 3d42fff2 394ac530 <4>[ 351.724963] 39200001 912a0000 7c0004ac 39400000 <992a0000> 4e800020 60000000 60420000 <4>[ 351.725055] ---[ end trace 9de875846d84dfcd ]--- root@ltc-firep2:/sys/fs/pstore#
Thanks, Pavithra
------- Comment From <email address hidden> 2017-05-26 07:55 EDT------- ... based on previous comment .. can you please backport patch to 16.04.03 as well?
-Vasant
------- Comment From <email address hidden> 2017-05-26 05:50 EDT-------
Issue is observed even on Ubuntu 16.04.03.
root@ltc- firep2: /sys/fs/ pstore# ls -lrt opal-nvram- 8 common- nvram-6
total 0
-r--r--r-- 1 root root 3909 May 5 04:21 dmesg-nvram-1
-r--r--r-- 1 root root 4080 May 26 02:59 powerpc-
-r--r--r-- 1 root root 65520 May 26 02:59 powerpc-
root@ltc- firep2: /sys/fs/ pstore# ls -lrt opal-nvram- 8 common- nvram-6 firep2: /sys/fs/ pstore# tail dmesg-nvram-1 trigger+ 0x10c/0x230 trigger+ 0xec/0x230 (unreliable) write+0x84/ 0x120 0x150/0x400 call+0x38/ 0xb4
total 0
-r--r--r-- 1 root root 3909 May 5 04:21 dmesg-nvram-1
-r--r--r-- 1 root root 4080 May 26 02:59 powerpc-
-r--r--r-- 1 root root 65520 May 26 02:59 powerpc-
root@ltc-
<4>[ 351.724539] LR [c0000000005dd79c] write_sysrq_
<4>[ 351.724583] Call Trace:
<4>[ 351.724603] [c000000fd79b7cf0] [c0000000005dd77c] write_sysrq_
<4>[ 351.724677] [c000000fd79b7d90] [c0000000003dabd4] proc_reg_
<4>[ 351.724733] [c000000fd79b7dd0] [c000000000327520] SyS_write+
<4>[ 351.724789] [c000000fd79b7e30] [c00000000000a17c] system_
<4>[ 351.724843] Instruction dump:
<4>[ 351.724870] 409effb8 7fc3f378 4bfff381 4bffffac 3c4c00c1 384205c0 3d42fff2 394ac530
<4>[ 351.724963] 39200001 912a0000 7c0004ac 39400000 <992a0000> 4e800020 60000000 60420000
<4>[ 351.725055] ---[ end trace 9de875846d84dfcd ]---
root@ltc- firep2: /sys/fs/ pstore# ls -lrt opal-nvram- 8 common- nvram-6 firep2: /sys/fs/ pstore# tail dmesg-nvram-1 trigger+ 0x10c/0x230 trigger+ 0xec/0x230 (unreliable) write+0x84/ 0x120 0x150/0x400 call+0x38/ 0xb4 firep2: /sys/fs/ pstore#
total 0
-r--r--r-- 1 root root 3909 May 5 04:21 dmesg-nvram-1
-r--r--r-- 1 root root 4080 May 26 05:31 powerpc-
-r--r--r-- 1 root root 65520 May 26 05:31 powerpc-
root@ltc-
<4>[ 351.724539] LR [c0000000005dd79c] write_sysrq_
<4>[ 351.724583] Call Trace:
<4>[ 351.724603] [c000000fd79b7cf0] [c0000000005dd77c] write_sysrq_
<4>[ 351.724677] [c000000fd79b7d90] [c0000000003dabd4] proc_reg_
<4>[ 351.724733] [c000000fd79b7dd0] [c000000000327520] SyS_write+
<4>[ 351.724789] [c000000fd79b7e30] [c00000000000a17c] system_
<4>[ 351.724843] Instruction dump:
<4>[ 351.724870] 409effb8 7fc3f378 4bfff381 4bffffac 3c4c00c1 384205c0 3d42fff2 394ac530
<4>[ 351.724963] 39200001 912a0000 7c0004ac 39400000 <992a0000> 4e800020 60000000 60420000
<4>[ 351.725055] ---[ end trace 9de875846d84dfcd ]---
root@ltc-
Thanks,
Pavithra
------- Comment From <email address hidden> 2017-05-26 07:55 EDT-------
... based on previous comment .. can you please backport patch to 16.04.03 as well?
-Vasant