Topme dará lo siguiente: (94 % de carga de CPU desde PID 28055)
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
28055 root 39 19 1295192 1,167g 3120 R 93,8 7,5 65:49.38 systemd-udevd
Cuando lo hago, strace -p 28055las siguientes líneas se repiten hasta el infinito:
getrandom("\246\306\216<\340\244a\256|\34\352\257\334\223\227\304", 16, GRND_NONBLOCK) = 16
getrandom("j\216\331 \361|X\241\333\270\260\202\377\224\3537", 16, GRND_NONBLOCK) = 16
getrandom("\36\301\27vkE\351\16\336\23\314\366y\t\272\307", 16, GRND_NONBLOCK) = 16
getrandom("U\234\235\2763\3257\37\314q\301\272i\301W\t", 16, GRND_NONBLOCK) = 16
getrandom("\223\27\244\26\365\251\335\263\233.\347\3\263]\205\4", 16, GRND_NONBLOCK) = 16
getrandom("\366,{+Tt\t\27\16z\257N^\235r,", 16, GRND_NONBLOCK) = 16
epoll_wait(10, [{EPOLLIN, {u32=798983008, u64=94889511453536}}], 11, 0) = 1
clock_gettime(CLOCK_BOOTTIME, {7011, 470364038}) = 0
epoll_wait(10, [{EPOLLIN, {u32=798983008, u64=94889511453536}}], 11, 0) = 1
clock_gettime(CLOCK_BOOTTIME, {7011, 470404228}) = 0
recvmsg(4, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000001}, msg_iov(1)=[{"change@/devices/pci0000:00/0000:"..., 8192}], msg_controllen=32, [{cmsg_len=28, cmsg_level=SOL_SOCKET, cmsg_type=SCM_CREDENTIALS, {pid=0, uid=0, gid=0}}], msg_flags=0}, 0) = 299
udevadm monitordará estas líneas, que también se repite hasta el infinito:
KERNEL[66275.112602] change /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:1.0/host4/target4:0:0/4:0:0:0/block/sdb (block)
No tengo idea de dónde está el problema. ¿Algún consejo sobre cómo seguir inspeccionando este problema? Gracias...
Ubuntu 16.04, 64 bits, 4.13.0-37-genérico
PD: La pregunta se trasladó de StackOverflow a aquí. Otros informes de problemas similares en foros no dieron ninguna solución real.
PS2: Se agregaron salidas de comando después del primer comentario. Al principio los omití porque no estaba convencido de ninguna relación con el primer problema, pero ahora ya no estoy seguro. Así que aquí algunas pruebas más:
journalctl
Mar 20 10:58:36 cosy kernel: sd 4:0:0:0: ioctl_internal_command return code = 8000002
Mar 20 10:58:36 cosy kernel: sd 4:0:0:0: Sense Key : Aborted Command [current]
Mar 20 10:58:36 cosy kernel: sd 4:0:0:0: Add. Sense: No additional sense information
Mar 20 10:58:36 cosy systemd-udevd[382]: inotify_add_watch(9, /dev/sdb1, 10) failed: No such file or directory
(la salida anterior se repite hasta el infinito)
dmesg
[72070.670913] sdb: sdb1
[72070.745597] sd 4:0:0:0: ioctl_internal_command return code = 8000002
[72070.745600] sd 4:0:0:0: Sense Key : Aborted Command [current]
[72070.745601] sd 4:0:0:0: Add. Sense: No additional sense information
[72070.747604] sdb: detected capacity change from 681574400 to 0
[72070.991468] sd 4:0:0:0: ioctl_internal_command return code = 8000002
/lib/systemd/systemd-udevd -D
adding watch on '/dev/sdb'
created db file '/run/udev/data/b8:16' for '/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:1.0/host4/target4:0:0/4:0:0:0/block/sdb'
passed device to netlink monitor 0x556a9c04b5d0
seq 4896728 processed
passed 282 byte device to netlink monitor 0x556a9c051740seq 4896729 running
removing watch on '/dev/sdb1'
value '[dmi/id]sys_vendor' is 'System manufacturer'
value '[dmi/id]sys_vendor' is 'System manufacturer'
no reference left, remove '/dev/disk/by-id/usb-BUFFALO_HD-HXU3_00000204B9AC-0:0-part1'
no reference left, remove '/dev/disk/by-label/UTIL_HDHXU3'
no reference left, remove '/dev/disk/by-path/pci-0000:00:1d.0-usb-0:1.4:1.0-scsi-0:0:0:0-part1'
no reference left, remove '/dev/disk/by-uuid/6BA5-31BF'
passed device to netlink monitor 0x556a9c04b5d0
seq 4896729 processed
passed 263 byte device to netlink monitor 0x556a9c051740
^Cseq 4896730 running
removing watch on '/dev/sdb'
value '[dmi/id]sys_vendor' is 'System manufacturer'
value '[dmi/id]sys_vendor' is 'System manufacturer'
IMPORT builtin 'usb_id' /lib/udev/rules.d/60-persistent-storage.rules:41
/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:1.0: if_class 8 protocol 6
LINK 'disk/by-id/usb-BUFFALO_HD-HXU3_00000204B9AC-0:0' /lib/udev/rules.d/60-persistent-storage.rules:46
IMPORT builtin 'path_id' /lib/udev/rules.d/60-persistent-storage.rules:64
LINK 'disk/by-path/pci-0000:00:1d.0-usb-0:1.4:1.0-scsi-0:0:0:0' /lib/udev/rules.d/60-persistent-storage.rules:65
IMPORT builtin 'blkid' /lib/udev/rules.d/60-persistent-storage.rules:76
probe /dev/sdb raid offset=0
handling device node '/dev/sdb', devnum=b8:16, mode=0600, uid=0, gid=0
preserve already existing symlink '/dev/block/8:16' to '../sdb'
found 'b8:16' claiming '/run/udev/links/\x2fdisk\x2fby-id\x2fusb-BUFFALO_HD-HXU3_00000204B9AC-0:0'
creating link '/dev/disk/by-id/usb-BUFFALO_HD-HXU3_00000204B9AC-0:0' to '/dev/sdb'
preserve already existing symlink '/dev/disk/by-id/usb-BUFFALO_HD-HXU3_00000204B9AC-0:0' to '../../sdb'
found 'b8:16' claiming '/run/udev/links/\x2fdisk\x2fby-path\x2fpci-0000:00:1d.0-usb-0:1.4:1.0-scsi-0:0:0:0'
creating link '/dev/disk/by-path/pci-0000:00:1d.0-usb-0:1.4:1.0-scsi-0:0:0:0' to '/dev/sdb'
preserve already existing symlink '/dev/disk/by-path/pci-0000:00:1d.0-usb-0:1.4:1.0-scsi-0:0:0:0' to '../../sdb'
created db file '/run/udev/data/b8:16' for '/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:1.0/host4/target4:0:0/4:0:0:0/block/sdb'
Ahora supongo que tiene que ver con un disco duro externo USB. Pero yo también lo necesito...
Respuesta1
En mi computadora portátil Dell, este problema se debe al panel táctil.
$ udevadm monitor
Eyl 03 22:02:58 Inspiron systemd-udevd[380]: Process 'hid2hci
--method=dell --devpath=/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.6/2-1.6.2/2-1.6.2:1.0' failed with exit code 1.
$ cat /sys/bus/usb/devices/2-1/2-1.6/2-1.6.2/id*
8162 413c
$ lsusb -d 413c:8162
Bus 002 Device 006: ID 413c:8162 Dell Computer Corp. Integrated Touchpad [Synaptics]
Para detener systemd-udevd:
sudo systemctl stop systemd-udevd systemd-udevd-control.socket systemd-udevd-kernel.socket
Para más información: