[Bug 1856511] Re: Freezing of tasks failed(iwconfig)

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: wireless-tools (Ubuntu)
       Status: New => Confirmed

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Title:
  Freezing of tasks failed(iwconfig)

Status in wireless-tools package in Ubuntu:
  Confirmed

Bug description:
  1) Ubuntu 19.10
  2) iwconfig  Wireless-Tools version 30
  3) Suspend system without task freeze.
  4) Task froze when system was suspended.

  Dec 15 10:21:00 htpc-GA-MA780G-UD3H kernel: [43132.514342] PM: suspend entry (deep)
  Dec 15 10:21:00 htpc-GA-MA780G-UD3H kernel: [43132.883332] Filesystems sync: 0.368 seconds
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43132.939352] Freezing user space processes ...
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.948498] Freezing of tasks failed after 20.009 seconds (1 tasks refusing to freeze, wq_busy=0):
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.948984] iwconfig        D    0 18556  18555 0x00004004
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.948986] Call Trace:
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.948992]  __schedule+0x2b9/0x6c0
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.948994]  schedule+0x42/0xb0
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.948996]  fanotify_handle_event+0x2fb/0x45e
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.948998]  ? wait_woken+0x80/0x80
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.949000]  fsnotify+0x29d/0x3d0
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.949003]  security_file_open+0xa2/0xe0
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.949004]  do_dentry_open+0xdf/0x3a0
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.949006]  vfs_open+0x2d/0x30
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.949007]  do_last+0x185/0x930
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.949009]  path_openat+0x8d/0x270
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.949010]  do_filp_open+0x91/0x100
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.949013]  ? __alloc_fd+0x46/0x150
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.949014]  do_sys_open+0x17e/0x290
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.949016]  __x64_sys_openat+0x20/0x30
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.949018]  do_syscall_64+0x5a/0x130
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.949020]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.949022] RIP: 0033:0x7f64f98d1d08
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.949025] Code: Bad RIP value.
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.949026] RSP: 002b:00007ffe70914968 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.949028] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f64f98d1d08
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.949028] RDX: 0000000000080000 RSI: 00007f64f98e2df0 RDI: 00000000ffffff9c
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.949029] RBP: 00007ffe709149d0 R08: 0000000000080000 R09: 00007f64f98e2df0
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.949030] R10: 0000000000000000 R11: 0000000000000287 R12: 00007f64f98e2df0
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.949030] R13: 000055f345e92839 R14: 00007ffe70914a40 R15: 00007ffe70914a40
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.949032] OOM killer enabled.
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.949033] Restarting tasks ... done.
  Dec 15 10:21:20 htpc-GA-MA780G-UD3H kernel: [43152.953953] PM: suspend exit

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