Public bug reported:
dmesg:
[ 605.178422] INFO: task systemd-udevd:326 blocked for more than 120 seconds.
[ 605.178434] Not tainted 4.11.0-041100rc8-generic #201704232131
[ 605.178437] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
[ 605.178442] systemd-udevd D 0 326 1 0x00000104
[ 605.178449] Call Trace:
[ 605.178467] __schedule+0x3c6/0x8c0
[ 605.178474] schedule+0x36/0x80
[ 605.178479] schedule_preempt_disabled+0xe/0x10
[ 605.178484] __mutex_lock.isra.5+0x26d/0x4e0
[ 605.178492] __mutex_lock_slowpath+0x13/0x20
[ 605.178497] ? __mutex_lock_slowpath+0x13/0x20
[ 605.178501] mutex_lock+0x2f/0x40
[ 605.178508] __blkdev_get+0x121/0x440
[ 605.178513] blkdev_get+0x12a/0x330
[ 605.178519] blkdev_open+0x5b/0x70
[ 605.178523] do_dentry_open+0x20a/0x310
[ 605.178528] ? bd_acquire+0xd0/0xd0
[ 605.178533] vfs_open+0x4e/0x80
[ 605.178540] path_openat+0x623/0x1500
[ 605.178546] ? kernfs_seq_stop_active+0x2b/0x30
[ 605.178552] do_filp_open+0x99/0x110
[ 605.178558] ? _crng_backtrack_protect+0x62/0x80
[ 605.178562] ? __check_object_size+0x100/0x19d
[ 605.178567] do_sys_open+0x130/0x220
[ 605.178571] ? do_sys_open+0x130/0x220
[ 605.178576] SyS_open+0x1e/0x20
[ 605.178582] do_syscall_64+0x5b/0xc0
[ 605.178586] entry_SYSCALL64_slow_path+0x25/0x25
[ 605.178590] RIP: 0033:0x7f4a8b59bd70
[ 605.178593] RSP: 002b:00007fff0a24e0b8 EFLAGS: 00000246 ORIG_RAX:
0000000000000002
[ 605.178598] RAX: ffffffffffffffda RBX: 00007fff0a24e150 RCX: 00007f4a8b59bd70
[ 605.178600] RDX: 0000561d1157fd23 RSI: 00000000000a0800 RDI: 0000561d12af1c10
[ 605.178603] RBP: 00007fff0a24e600 R08: 0000561d1157f400 R09: 0000000000000000
[ 605.178605] R10: 0000561d12ab4e40 R11: 0000000000000246 R12: 00007fff0a24e260
[ 605.178607] R13: 0000561d12aa2010 R14: 0000561d12aaa0e0 R15: 00007fff0a24e130
ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: systemd 232-21ubuntu3
Uname: Linux 4.11.0-041100-generic x86_64
ApportVersion: 2.20.4-0ubuntu4
Architecture: amd64
CurrentDesktop: GNOME
Date: Sat May 6 17:13:05 2017
InstallationDate: Installed on 2015-07-26 (650 days ago)
InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Alpha amd64 (20150723)
MachineType: SAMSUNG ELECTRONICS CO., LTD. 530U3C/530U4C
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.11.0-041100-generic
root=UUID=4f4435ca-b877-47a5-9065-3dd624c0514e ro rootflags=subvol=@ quiet
splash vt.handoff=7
SourcePackage: systemd
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/15/2013
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: P14AAJ
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: SAMSUNG_NP1234567890
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: FAB1
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: 0.1
dmi.modalias:
dmi:bvnPhoenixTechnologiesLtd.:bvrP14AAJ:bd04/15/2013:svnSAMSUNGELECTRONICSCO.,LTD.:pn530U3C/530U4C:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rnSAMSUNG_NP1234567890:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1:
dmi.product.name: 530U3C/530U4C
dmi.product.version: 0.1
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
** Affects: systemd
Importance: Unknown
Status: Unknown
** Affects: systemd (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug zesty
** Attachment added: "dmesg_4.11.0-041100rc8-generic.txt"
https://bugs.launchpad.net/bugs/1688920/+attachment/4872754/+files/dmesg_4.11.0-041100rc8-generic.txt
** Bug watch added: github.com/systemd/systemd/issues #5904
https://github.com/systemd/systemd/issues/5904
** Also affects: systemd via
https://github.com/systemd/systemd/issues/5904
Importance: Unknown
Status: Unknown
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https://bugs.launchpad.net/bugs/1688920
Title:
INFO: task systemd-udevd:326 blocked for more than 120 seconds.
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