SUMMARY

Dolphin will hang when opening certain directories. there isn't any consistency to when this happens. When it does hang it cannot be killed even sending a SIGKILL has no effect. The Dolphin window will stay open, but all the colors will be greyed out, and the window can still be moved around, just not interacted with.

Side Note: There is no way to easily format text/code or insert image son this bugtracker??


STEPS TO REPRODUCE

I cannot reliably reproduce, it happens at random.


OBSERVED RESULT

Dolphin does not open folder and instead hangs.


EXPECTED RESULT

Dolphin opens folder.


Related to: https://bugs.kde.org/show_bug.cgi?id=228462 ?


SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kubuntu 18.10
KDE Plasma Version: 5.14.4
KDE Frameworks Version: 5.52.0
Qt Version: 5.11.1

ADDITIONAL INFORMATION

I only found 2 relevant logs in syslog:

When I opened the folder:


>Jan 21 13:56:23 pc-name krunner[3189]: error[0c7500ff]: Unknown opened directory on descriptor 92
>Jan 21 13:56:23 pc-name krunner[3189]: error[0c7500ff]: Unknown opened directory on descriptor 93
>Jan 21 13:56:23 pc-name krunner[3189]: error[0c7500ff]: Unknown opened directory on descriptor 91
>Jan 21 13:56:23 pc-name krunner[3189]: error[0c7500ff]: Unknown opened directory on descriptor 93
>Jan 21 13:56:23 pc-name krunner[3189]: error[0c7500ff]: Unknown opened directory on descriptor 91
>Jan 21 13:56:23 pc-name krunner[3189]: error[0c7500ff]: Unknown opened directory on descriptor 93
>Jan 21 13:56:23 pc-name krunner[3189]: error[0c7500ff]: Unknown opened directory on descriptor 91
>Jan 21 13:56:23 pc-name krunner[3189]: error[0c7500ff]: Unknown opened directory on descriptor 93
>Jan 21 13:56:23 pc-name krunner[3189]: error[0c7500ff]: Unknown opened directory on descriptor 91
>Jan 21 13:56:23 pc-name krunner[3189]: error[0c7500ff]: Unknown opened directory on descriptor 93
>Jan 21 13:56:23 pc-name krunner[3189]: error[0c7500ff]: Unknown opened directory on descriptor 91

When I tried to close Dolphin:

>Jan 21 14:01:53 pc-name kernel: [52200.917115] INFO: task dolphin:3345 blocked for more than 120 seconds.
>Jan 21 14:01:53 pc-name kernel: [52200.917119]       Tainted: G           OE     4.18.0-13-generic #14-Ubuntu
>Jan 21 14:01:53 pc-name kernel: [52200.917121] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
>Jan 21 14:01:53 pc-name kernel: [52200.917123] dolphin         D    0  3345   3117 0x00000004
>Jan 21 14:01:53 pc-name kernel: [52200.917126] Call Trace:
>Jan 21 14:01:53 pc-name kernel: [52200.917134]  __schedule+0x29e/0x840
>Jan 21 14:01:53 pc-name kernel: [52200.917137]  schedule+0x2c/0x80
>Jan 21 14:01:53 pc-name kernel: [52200.917141]  request_wait_answer+0x133/0x210
>Jan 21 14:01:53 pc-name kernel: [52200.917144]  ? wait_woken+0x80/0x80
>Jan 21 14:01:53 pc-name kernel: [52200.917146]  __fuse_request_send+0x69/0x90
>Jan 21 14:01:53 pc-name kernel: [52200.917148]  fuse_request_send+0x29/0x30
>Jan 21 14:01:53 pc-name kernel: [52200.917150]  fuse_simple_request+0xdd/0x1a0
>Jan 21 14:01:53 pc-name kernel: [52200.917152]  fuse_dentry_revalidate+0x1a1/0x330
>Jan 21 14:01:53 pc-name kernel: [52200.917156]  d_revalidate.part.26+0x10/0x20
>Jan 21 14:01:53 pc-name kernel: [52200.917158]  lookup_fast+0x30e/0x330
>Jan 21 14:01:53 pc-name kernel: [52200.917160]  walk_component+0x49/0x4b0
>Jan 21 14:01:53 pc-name kernel: [52200.917162]  path_lookupat.isra.45+0x75/0x200
>Jan 21 14:01:53 pc-name kernel: [52200.917164]  ? __schedule+0x2a6/0x840
>Jan 21 14:01:53 pc-name kernel: [52200.917166]  filename_lookup.part.59+0xa0/0x170
>Jan 21 14:01:53 pc-name kernel: [52200.917169]  ? __check_object_size+0xa1/0x178
>Jan 21 14:01:53 pc-name kernel: [52200.917172]  ? strncpy_from_user+0x4f/0x180
>Jan 21 14:01:53 pc-name kernel: [52200.917174]  user_path_at_empty+0x3e/0x50
>Jan 21 14:01:53 pc-name kernel: [52200.917176]  vfs_statx+0x76/0xe0
>Jan 21 14:01:53 pc-name kernel: [52200.917179]  __do_sys_statx+0x3f/0x80
>Jan 21 14:01:53 pc-name kernel: [52200.917181]  ? ksys_getdents64+0x112/0x130
>Jan 21 14:01:53 pc-name kernel: [52200.917183]  ? iterate_dir+0x1a0/0x1a0
>Jan 21 14:01:53 pc-name kernel: [52200.917185]  __x64_sys_statx+0x24/0x30
>Jan 21 14:01:53 pc-name kernel: [52200.917188]  do_syscall_64+0x5a/0x110
>Jan 21 14:01:53 pc-name kernel: [52200.917190]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
>Jan 21 14:01:53 pc-name kernel: [52200.917192] RIP: 0033:0x7fcf3ee14683
>Jan 21 14:01:53 pc-name kernel: [52200.917193] Code: Bad RIP value.
>Jan 21 14:01:53 pc-name kernel: [52200.917198] RSP: 002b:00007ffe0a35ece0 EFLAGS: 00000246 ORIG_RAX: 000000000000014c
>Jan 21 14:01:53 pc-name kernel: [52200.917201] RAX: ffffffffffffffda RBX: 00007ffe0a35edc0 RCX: 00007fcf3ee14683
>Jan 21 14:01:53 pc-name kernel: [52200.917202] RDX: 0000000000000000 RSI: 00005632d509afa8 RDI: 00000000ffffff9c
>Jan 21 14:01:53 pc-name kernel: [52200.917203] RBP: 00000000ffffff9c R08: 00007ffe0a35edc0 R09: 0000000000000000
>Jan 21 14:01:53 pc-name kernel: [52200.917204] R10: 0000000000000fff R11: 0000000000000246 R12: 00005632d509afa8
>Jan 21 14:01:53 pc-name kernel: [52200.917204] R13: 00007ffe0a35edb0 R14: 0000000000000000 R15: 00005632d54d37a8