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Description of problem: When creating bootable usb sticks with ISO residing on CIFS mount, kernel oops as seen below. $ sudo unetbootin and then selecting an ISO image on a CIFS share Version-Release number of selected component (if applicable): cachefilesd-0.10.10-1.fc26.x86_64 samba-client-4.6.8-0.fc26.x86_64 How reproducible: Solid, on 2nd USB stick created after reboot. Steps to Reproduce: 1. sudo unetbootin 2. Pick file on CIFS filesystem (Windows 2008 SR2 server) 3. Happeneds when creating 2nd USB stick Actual results: [16793.526043] usb-storage 3-2:1.0: USB Mass Storage device detected [16793.526363] scsi host8: usb-storage 3-2:1.0 [16794.550994] scsi 8:0:0:0: Direct-Access General UDisk 5.00 PQ: 0 ANSI: 2 [16794.552119] sd 8:0:0:0: [sde] 7864320 512-byte logical blocks: (4.03 GB/3.75 GiB) [16794.552271] sd 8:0:0:0: [sde] Write Protect is off [16794.552274] sd 8:0:0:0: [sde] Mode Sense: 0b 00 00 08 [16794.552459] sd 8:0:0:0: [sde] No Caching mode page found [16794.552467] sd 8:0:0:0: [sde] Assuming drive cache: write through [16794.552474] sd 8:0:0:0: Attached scsi generic sg3 type 0 [16794.554410] sde: [16794.555287] sd 8:0:0:0: [sde] Attached SCSI removable disk [17055.952130] CacheFiles: [17055.952137] CacheFiles: Error: Overlong wait for old active object to go away [17055.952141] CacheFiles: object: OBJ2a2 [17055.952144] CacheFiles: objstate=LOOK_UP_OBJECT fl=8 wbusy=2 ev=0[0] [17055.952147] CacheFiles: ops=0 inp=0 exc=0 [17055.952149] CacheFiles: parent=ffff8d3b579aec00 [17055.952152] CacheFiles: cookie=ffff8d3ab5f91370 [pr=ffff8d37d87586e0 nd=ffff8d377fab5db0 fl=27] [17055.952155] CacheFiles: key=[8] '1a22010000000400' [17055.952162] CacheFiles: xobject: OBJ2a1 [17055.952165] CacheFiles: xobjstate=DROP_OBJECT fl=70 wbusy=2 ev=10[0] [17055.952167] CacheFiles: xops=0 inp=0 exc=0 [17055.952169] CacheFiles: xparent=ffff8d3b579aec00 [17055.952172] CacheFiles: xcookie=ffff8d3a3a284c60 [pr=ffff8d37d87586e0 nd= (null) fl=10] [17115.989069] CacheFiles: [17115.989074] CacheFiles: Error: Overlong wait for old active object to go away [17115.989078] CacheFiles: object: OBJ2a2 [17115.989082] CacheFiles: objstate=LOOK_UP_OBJECT fl=8 wbusy=2 ev=0[0] [17115.989085] CacheFiles: ops=0 inp=0 exc=0 [17115.989088] CacheFiles: parent=ffff8d3b579aec00 [17115.989092] CacheFiles: cookie=ffff8d3ab5f91370 [pr=ffff8d37d87586e0 nd=ffff8d377fab5db0 fl=27] [17115.989095] CacheFiles: key=[8] '1a22010000000400' [17115.989104] CacheFiles: xobject: OBJ2a1 [17115.989107] CacheFiles: xobjstate=DROP_OBJECT fl=70 wbusy=2 ev=10[0] [17115.989110] CacheFiles: xops=0 inp=0 exc=0 [17115.989112] CacheFiles: xparent=ffff8d3b579aec00 [17115.989116] CacheFiles: xcookie=ffff8d3a3a284c60 [pr=ffff8d37d87586e0 nd= (null) fl=10] [17176.027004] CacheFiles: [17176.027009] CacheFiles: Error: Overlong wait for old active object to go away [17176.027012] CacheFiles: object: OBJ2a2 [17176.027015] CacheFiles: objstate=LOOK_UP_OBJECT fl=8 wbusy=2 ev=0[0] [17176.027016] CacheFiles: ops=0 inp=0 exc=0 [17176.027018] CacheFiles: parent=ffff8d3b579aec00 [17176.027020] CacheFiles: cookie=ffff8d3ab5f91370 [pr=ffff8d37d87586e0 nd=ffff8d377fab5db0 fl=27] [17176.027022] CacheFiles: key=[8] '1a22010000000400' [17176.027028] CacheFiles: xobject: OBJ2a1 [17176.027030] CacheFiles: xobjstate=DROP_OBJECT fl=70 wbusy=2 ev=10[0] [17176.027032] CacheFiles: xops=0 inp=0 exc=0 [17176.027033] CacheFiles: xparent=ffff8d3b579aec00 [17176.027036] CacheFiles: xcookie=ffff8d3a3a284c60 [pr=ffff8d37d87586e0 nd= (null) fl=10] [17403.227381] CacheFiles: [17403.227387] CacheFiles: Error: Unexpected object collision [17403.227390] CacheFiles: object: OBJ43b [17403.227394] CacheFiles: objstate=LOOK_UP_OBJECT fl=8 wbusy=2 ev=0[0] [17403.227397] CacheFiles: ops=0 inp=0 exc=0 [17403.227400] CacheFiles: parent=ffff8d3b579aec00 [17403.227404] CacheFiles: cookie=ffff8d3776b3d688 [pr=ffff8d37d87586e0 nd=ffff8d377fab5db0 fl=27] [17403.227406] CacheFiles: key=[8] '1a22010000000400' [17403.227415] CacheFiles: xobject: OBJ43a [17403.227418] CacheFiles: xobjstate=DROP_OBJECT fl=70 wbusy=2 ev=10[0] [17403.227421] CacheFiles: xops=0 inp=0 exc=0 [17403.227423] CacheFiles: xparent=ffff8d3b579aec00 [17403.227427] CacheFiles: xcookie=ffff8d3b239802c0 [pr=ffff8d37d87586e0 nd= (null) fl=10] [17403.227466] ------------[ cut here ]------------ [17403.227471] kernel BUG at fs/cachefiles/namei.c:198! [17403.227475] invalid opcode: 0000 [#1] SMP [17403.227476] Modules linked in: vfat fat md4 uas usb_storage hid_logitech_hidpp hid_logitech_dj rfcomm vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) xt_CHECKSUM nvidia(POE) drm tun nls_utf8 cifs dns_resolver ccm ipt_MASQUERADE nf_nat_masquerade_ipv4 xt_addrtype br_netfilter nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack dm_thin_pool dm_persistent_data dm_bio_prison loop ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_raw iptable_security ebtable_filter ebtables ip6table_filter ip6_tables fuse vmw_vsock_vmci_transport vsock [17403.227523] vmw_vmci cachefiles fscache bnep sunrpc xfs libcrc32c iTCO_wdt iTCO_vendor_support ppdev mei_wdt intel_powerclamp coretemp kvm_intel uvcvideo kvm qcserial usb_wwan videobuf2_vmalloc btusb videobuf2_memops btrtl videobuf2_v4l2 videobuf2_core btbcm btintel bluetooth snd_hda_codec_hdmi videodev irqbypass intel_cstate media ecdh_generic intel_uncore arc4 iwldvm mac80211 snd_hda_codec_conexant snd_hda_codec_generic snd_hda_intel joydev iwlwifi snd_hda_codec i7core_edac cfg80211 snd_hda_core snd_hwdep thinkpad_acpi i2c_i801 snd_seq lpc_ich snd_seq_device snd_pcm snd_timer snd soundcore acpi_cpufreq rfkill parport_pc parport mei_me mei shpchp tpm_tis tpm_tis_core tpm binfmt_misc mxm_wmi sdhci_pci sdhci firewire_ohci crc32c_intel e1000e serio_raw mmc_core firewire_core crc_itu_t ptp pps_core [17403.227577] video wmi ecryptfs [17403.227583] CPU: 4 PID: 14075 Comm: kworker/u16:4 Tainted: P OE 4.12.14-300.fc26.x86_64 #1 [17403.227585] Hardware name: LENOVO 43892DG/43892DG, BIOS 6NET76WW (1.37 ) 02/24/2011 [17403.227594] Workqueue: fscache_object fscache_object_work_func [fscache] [17403.227597] task: ffff8d386c5d0000 task.stack: ffffb92b09264000 [17403.227602] RIP: 0010:cachefiles_walk_to_object+0x799/0x870 [cachefiles] [17403.227605] RSP: 0018:ffffb92b09267d10 EFLAGS: 00010202 [17403.227607] RAX: ffff8d39b879da01 RBX: ffff8d3903e3f1c0 RCX: 000000000026e9ee [17403.227609] RDX: 000000000026e9ed RSI: ffff8d3b7fd1d760 RDI: ffff8d3b6f003080 [17403.227611] RBP: ffffb92b09267dc0 R08: 000000000001d760 R09: ffffffffc07cebd0 [17403.227613] R10: fffffd2209e1e700 R11: ffffffff9b311b6d R12: ffff8d386c58ed80 [17403.227615] R13: ffff8d3903e3f080 R14: ffff8d3a31d82f00 R15: ffff8d386c58eea8 [17403.227618] FS: 0000000000000000(0000) GS:ffff8d3b7fd00000(0000) knlGS:0000000000000000 [17403.227620] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [17403.227622] CR2: 00007f8488a21a08 CR3: 0000000303e09000 CR4: 00000000000006e0 [17403.227624] Call Trace: [17403.227631] ? update_curr+0xf2/0x1c0 [17403.227635] cachefiles_lookup_object+0x4d/0xe0 [cachefiles] [17403.227641] fscache_look_up_object+0xb7/0x1b0 [fscache] [17403.227647] ? fscache_parent_ready+0x2b/0x70 [fscache] [17403.227653] fscache_object_work_func+0x60/0x1e0 [fscache] [17403.227657] process_one_work+0x193/0x3c0 [17403.227661] worker_thread+0x4a/0x3a0 [17403.227664] kthread+0x125/0x140 [17403.227667] ? process_one_work+0x3c0/0x3c0 [17403.227670] ? kthread_park+0x60/0x60 [17403.227675] ret_from_fork+0x25/0x30 [17403.227677] Code: d9 0f 0b e8 da 7f 8d d9 48 c7 c7 ef f5 7c c0 e8 af 7c 9f d9 48 c7 c7 78 01 7d c0 e8 a3 7c 9f d9 4c 89 ee 4c 89 e7 e8 e4 28 00 00 <0f> 0b 0f 0b 48 c7 c7 48 01 7d c0 e8 88 7c 9f d9 31 f6 4c 89 e7 [17403.227716] RIP: cachefiles_walk_to_object+0x799/0x870 [cachefiles] RSP: ffffb92b09267d10 [17403.227719] ---[ end trace 6d75494e99615075 ]--- and then you can create a new one. Expected results: - Should be able to create any number of bootable USB Additional info: Ref bugzilla bug # 1210730
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Fedora 26 changed to end-of-life (EOL) status on 2018-05-29. Fedora 26 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.