Dans le dernier DMSEG, il y une I/O d'écriture qui ne peut se faire, Donc c'est logique de le mettre ON.
Le diagnostic est bien celui que tu dis.
Dans le premier DMSG du message 34
[16401.010683] sd 7:0:0:0: [sdc] Write Protect is off
[16401.010687] sd 7:0:0:0: [sdc] Mode Sense: 0b 00 00 08
[16401.010845] sd 7:0:0:0: [sdc] No Caching mode page found
[16401.010851] sd 7:0:0:0: [sdc] Assuming drive cache: write through
[16401.039462] sdc: sdc1
[16401.040622] sd 7:0:0:0: [sdc] Attached SCSI removable disk
[16401.301656] FAT-fs (sdc1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[16920.919523] perf: interrupt took too long (3165 > 3136), lowering kernel.perf_event_max_sample_rate to 63000
[16986.213909] usb 1-3: USB disconnect, device number 9
[16993.161965] usb 1-6: new high-speed USB device number 10 using xhci_hcd
[16993.310804] usb 1-6: New USB device found, idVendor=0781, idProduct=5567, bcdDevice= 1.26
[16993.310810] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[16993.310813] usb 1-6: Product: Cruzer Blade
[16993.310815] usb 1-6: Manufacturer: SanDisk
[16993.310818] usb 1-6: SerialNumber: 4C530103171102100072
[16993.314135] usb-storage 1-6:1.0: USB Mass Storage device detected
[16993.316013] scsi host7: usb-storage 1-6:1.0
[16994.347141] scsi 7:0:0:0: Direct-Access SanDisk Cruzer Blade 1.26 PQ: 0 ANSI: 6
[16994.351034] sd 7:0:0:0: Attached scsi generic sg2 type 0
[16994.353853] sd 7:0:0:0: [sdc] 62530624 512-byte logical blocks: (32.0 GB/29.8 GiB)
[16994.355448] sd 7:0:0:0: [sdc] Write Protect is on,
Je n'avais pas compris la cause du passage OFF=> ON
Je vois donc que perf:
interrupt took too long provoque la même sanction.