From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpfallback04.a1.net (smtpfallback04.a1.net [194.48.128.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 83A1E40D574 for ; Wed, 23 Sep 2026 17:54:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=194.48.128.17 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790186099; cv=none; b=LUVR4BW5nJy8vuSDo+JgmBEaScHne5R72AttoncKlw4MMVOK1txqJuLn3ETUWzeBVvdFMrKPQcIA7ot1duW5qdoPkq/f6wi9gwPSZeCkG1Vw3K2bwEN5K79RkwkBgVUJ5YqHKTf/c5qbHpKV0q75ak8JZuQH3Ox12woTq8QJ+so= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790186099; c=relaxed/simple; bh=A32Kqt/fP8EKy4wf2gIwnRIXLpycJA+wo7scyfqL3EI=; h=To:From:Subject:Message-ID:Date:MIME-Version:Content-Type; b=aIJPRQ4iUikOhwd966oxI6LnC/etm4cNxX1gZG/qvX4BeQMRHS0cbUqGJ8EsXp29q7+mStj1Y2poOrcdZ9a1/6dZVvmw76FzYI2CZ5wbH0LErKlSIO9Bo2cYqI8q0DVLQ4x9qiRlKjnMV3ThV5ZvTfIlWqY8QteH9MCG5HYo+Kk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=a1.net; spf=pass smtp.mailfrom=a1.net; dkim=pass (4096-bit key) header.d=a1.net header.i=@a1.net header.b=Txrqyuz3; arc=none smtp.client-ip=194.48.128.17 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=a1.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=a1.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (4096-bit key) header.d=a1.net header.i=@a1.net header.b="Txrqyuz3" Received: from smtpout20.a1.net (unknown [10.247.84.23]) by smtpfallback04.a1.net (Postfix) with ESMTPS id 4hqkr76244zYklK9 for ; Wed, 23 Sep 2026 19:44:55 +0200 (CEST) Received: from [192.168.0.6] (unknown [100.78.19.185]) by smtpout20.a1.net (Postfix) with ESMTPSA id 4hqkqy1X0PzGrqnx for ; Wed, 23 Sep 2026 19:44:46 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=a1.net; s=resmail1; t=1790185486; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=mAh4lk/27E28hpjyOzVdM77JoiLCDjvXOLKsnbwFVrI=; b=Txrqyuz37brI5oDE8DNZikZetNat81BQwjLNR0Fme+nhNMIFHSK8+MstrIZSl0YjEQO06v G3hP0E/uLRV7sIkq2lCsO4qbxLo0AaQPLmI1cc/Eu4qb/fLTmZWEOxVBtYMR8wtP1dj/tm X8bA1xeJVg9KJk5vIEsuxyjcs5ww0CLFQeyLe2yejSiiHVfZsosixPKS/fraol/2MamC3S jV4zrzIZaoTT0bijQHcA+PXdJuyMHl0jfSHBYd7J0DrmurNjPmSxOLzz4DUKnJhZ0caPVj uZdIMjbC0tYIOB6cQf9fM++HPhn6KpHqtybaJW+Ps89Ngf21oN3KRyHWsyz20+vWiTajpT FFUR1JD4uHjQEO8jYdFA8LYLVOr25wkl8xnX+VYY2hLiDuewvh+aVvNRpw6CC1q8EniHSw aLMRPA1gGjIynKkUfeByx2FJV3FiRBekjlj+1kOLPkDmd1xlipuEySjNuVViqLKtFpHism uAvyuZVHH+X/pFxLA63nKYpKQtTzxTfNPuFKvZ9HATkWO1XeDjRWNJxtf5oXvlWDfmHGVZ t5jB+LO6sk2mz6OE0v+tYRgD7yLoXbUI9Nx1Qt6MUZw/e47oIBExyktncm5O9dEwDx0iTS fUXQ0WFHuAYf7Hp2Q3u5hcMlZmRa6VLX97lkAm7EV2JiaNxp+o+aM= To: linux-usb@vger.kernel.org From: Johann Klammer Subject: possible regression in usb-storage? Message-ID: Date: Wed, 23 Sep 2026 19:43:51 +0200 User-Agent: Mozilla/5.0 (X11; Linux i686; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Spam-Level: Good evening, on a 6.9.9-686 kernel I get a failing log: > [14053.748372] usb 1-6: new high-speed USB device number 4 using ehci-pci > [14053.945440] usb 1-6: New USB device found, idVendor=0bc2, idProduct=2039, bcdDevice=19.01 > [14053.946938] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=3 > [14053.948390] usb 1-6: Product: Expansion SW > [14053.949824] usb 1-6: Manufacturer: Seagate > [14053.951194] usb 1-6: SerialNumber: 00000000NACD256B > [14053.953484] scsi host5: uas > [14053.955698] scsi 5:0:0:0: Direct-Access Seagate Expansion SW 1901 PQ: 0 ANSI: 6 > [14053.962246] sd 5:0:0:0: Attached scsi generic sg2 type 0 > [14114.264385] udevd[395]: worker [5894] /devices/pci0000:00/0000:00:1d.7/usb1/1-6/1-6:1.0/host5/target5:0:0/5:0:0:0 is taking a long time > [14122.158683] sd 5:0:0:0: [sdc] Spinning up disk... it hangs here and makes weird noises. I disconnect it. > [14143.232377] . > [14178.284046] usb 1-6: USB disconnect, device number 4 > [14178.287138] sd 5:0:0:0: [sdc] tag#10 uas_zap_pending 0 uas-tag 1 inflight: CMD. > [14178.288510] sd 5:0:0:0: [sdc] tag#10 CDB: Test Unit Ready 00 00 00 00 00 00 > [14178.289918] not responding... > [14178.291273] sd 5:0:0:0: [sdc] Read Capacity(16) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK > [14178.292611] sd 5:0:0:0: [sdc] Sense not available. > [14178.293910] sd 5:0:0:0: [sdc] Read Capacity(10) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK > [14178.295177] sd 5:0:0:0: [sdc] Sense not available. > [...] disabling the uas driver as suggested on various fora does not help: > [ 221.378596] usb 1-5: new high-speed USB device number 6 using ehci-pci > [ 221.579691] usb 1-5: New USB device found, idVendor=0bc2, idProduct=2039, bcdDevice=19.01 > [ 221.579695] usb 1-5: New USB device strings: Mfr=1, Product=2, SerialNumber=3 > [ 221.579698] usb 1-5: Product: Expansion SW > [ 221.579700] usb 1-5: Manufacturer: Seagate > [ 221.579701] usb 1-5: SerialNumber: 00000000NACD256B > [ 221.580397] usb 1-5: UAS is ignored for this device, using usb-storage instead > [ 221.580401] usb-storage 1-5:1.0: USB Mass Storage device detected > [ 221.580498] usb-storage 1-5:1.0: Quirks match for vid 0bc2 pid 2039: 800000 > [ 221.580527] scsi host5: usb-storage 1-5:1.0 > [ 222.587483] scsi 5:0:0:0: Direct-Access Seagate Expansion SW 1901 PQ: 0 ANSI: 6 > [ 222.587795] sd 5:0:0:0: Attached scsi generic sg3 type 0 ...here things hang. I disconnect.. > [ 241.743514] usb 1-5: USB disconnect, device number 6 > [ 241.758624] sd 5:0:0:0: [sdd] Read Capacity(10) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK > [ 241.758627] sd 5:0:0:0: [sdd] Sense not available. > [ 241.758634] sd 5:0:0:0: [sdd] 0 512-byte logical blocks: (0 B/0 B) > [ 241.758637] sd 5:0:0:0: [sdd] 0-byte physical blocks > [ 241.758642] sd 5:0:0:0: [sdd] Write Protect is off > [ 241.758644] sd 5:0:0:0: [sdd] Mode Sense: 00 00 00 00 > [ 241.758649] sd 5:0:0:0: [sdd] Asking for cache data failed > [ 241.759589] sd 5:0:0:0: [sdd] Assuming drive cache: write through > [ 241.759880] sd 5:0:0:0: [sdd] Attached SCSI disk > [ 241.975904] udevd[4761]: inotify_add_watch(7, /dev/sdd, 10) failed: No such file or directory on a 3.16 kernel on a different box it works. I have: > usb 4-7: new high speed USB device using ehci_hcd and address 2 > usb 4-7: new device found, idVendor=0bc2, idProduct=2039 > usb 4-7: new device strings: Mfr=1, Product=2, SerialNumber=3 > usb 4-7: Product: Expansion SW > usb 4-7: Manufacturer: Seagate > usb 4-7: SerialNumber: 00000000NACD256B > usb 4-7: configuration #1 chosen from 1 choice > Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2 > ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx > Initializing USB Mass Storage driver... > scsi4 : SCSI emulation for USB Mass Storage devices > usb-storage: device found at 2 > usb-storage: waiting for device to settle before scanning > usbcore: registered new interface driver usb-storage > USB Mass Storage support registered. > scsi 4:0:0:0: Direct-Access Seagate Expansion SW 1901 PQ: 0 ANSI: 6 > sd 4:0:0:0: [sdb] 1953525167 512-byte hardware sectors (1000205 MB) > sd 4:0:0:0: [sdb] Write Protect is off > sd 4:0:0:0: [sdb] Mode Sense: 47 00 00 08 > sd 4:0:0:0: [sdb] Assuming drive cache: write through > sd 4:0:0:0: [sdb] 1953525167 512-byte hardware sectors (1000205 MB) > sd 4:0:0:0: [sdb] Write Protect is off > sd 4:0:0:0: [sdb] Mode Sense: 47 00 00 08 > sd 4:0:0:0: [sdb] Assuming drive cache: write through > sdb: sdb1 > sd 4:0:0:0: [sdb] Attached SCSI disk > sd 4:0:0:0: Attached scsi generic sg2 type 0 > usb-storage: device scan complete with a kernel 4.9.0-0.bpo.12-686-pae log (with uas): > [ 143.348022] usb 1-7: new high-speed USB device number 2 using ehci-pci > [ 143.561192] usb 1-7: New USB device found, idVendor=0bc2, idProduct=2039 > [ 143.561198] usb 1-7: New USB device strings: Mfr=1, Product=2, SerialNumber=3 > [ 143.561201] usb 1-7: Product: Expansion SW > [ 143.561204] usb 1-7: Manufacturer: Seagate > [ 143.561206] usb 1-7: SerialNumber: 00000000NACD256B > [ 143.801335] usbcore: registered new interface driver usb-storage > [ 143.818228] scsi host4: uas > [ 143.818463] usbcore: registered new interface driver uas > [ 143.820344] scsi 4:0:0:0: Direct-Access Seagate Expansion SW 1901 PQ: 0 ANSI: 6 > [ 143.822455] sd 4:0:0:0: Attached scsi generic sg3 type 0 > [ 146.464493] sd 4:0:0:0: [sdc] 1953525167 512-byte logical blocks: (1.00 TB/932 GiB) > [ 146.464501] sd 4:0:0:0: [sdc] 4096-byte physical blocks > [ 146.465591] sd 4:0:0:0: [sdc] Write Protect is off > [ 146.465596] sd 4:0:0:0: [sdc] Mode Sense: 53 00 00 08 > [ 146.466216] sd 4:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA > [ 146.466592] sd 4:0:0:0: [sdc] Optimal transfer size 33553920 bytes not a multiple of physical block size (4096 bytes) > [ 146.679941] sdc: sdc1 > [ 146.683219] sd 4:0:0:0: [sdc] Attached SCSI disk detection and mounting works ok, but the disk buzzes all the time.. mount and ls look ok. > [ 223.403981] EXT4-fs (sdc1): mounting ext3 file system using the ext4 subsystem > [ 224.337602] EXT4-fs (sdc1): mounted filesystem with ordered data mode. Opts: (null) but on disconnect(after umount): > [ 290.721391] usb 1-7: USB disconnect, device number 2 > [ 290.723067] sd 4:0:0:0: [sdc] Synchronizing SCSI cache > [ 290.960040] sd 4:0:0:0: [sdc] Synchronize Cache(10) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK It seems it failed sometime around this version. Linux hardware compatibility lists on the internet suggests the hard disk is supported since 2.6something. I tried to set usbfs_snoop in the sysfs and the kernel commandline, but I don't get any more output. usually I unplugged after around 20 sec hangs. if I don't do that, the kernel will eventually kill the worker thread and later udevd: > Sep 23 11:47:00 daemon.err kernel: [ 233.849695] udevd[400]: worker [4800] /devices/pci0000:00/0000:00:1d.7/usb1/1-5/1-5:1.0/host5/target5:0:0/5:0:0:0 timeout; kill it > Sep 23 11:47:00 daemon.err kernel: [ 233.851646] udevd[400]: seq 2026 '/devices/pci0000:00/0000:00:1d.7/usb1/1-5/1-5:1.0/host5/target5:0:0/5:0:0:0' killed > Sep 23 11:47:09 kern.err kernel: [ 242.874627] INFO: task udevd:4800 blocked for more than 120 seconds. > Sep 23 11:47:09 kern.err kernel: [ 242.874662] Not tainted 6.9.9-686 #1 Debian 6.9.9-1 > Sep 23 11:47:09 kern.err kernel: [ 242.874684] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > Sep 23 11:47:09 kern.info kernel: [ 242.874711] task:udevd state:D stack:0 pid:4800 tgid:4800 ppid:400 flags:0x00000006 > Sep 23 11:47:09 kern.info kernel: [ 242.874748] Call Trace: > Sep 23 11:47:09 kern.info kernel: [ 242.874764] __schedule+0x406/0xb6c > Sep 23 11:47:09 kern.info kernel: [ 242.874786] schedule+0x25/0x10c > Sep 23 11:47:09 kern.info kernel: [ 242.874803] schedule_preempt_disabled+0x14/0x20 > Sep 23 11:47:09 kern.info kernel: [ 242.874824] __mutex_lock.constprop.0+0x315/0x644 > Sep 23 11:47:09 kern.info kernel: [ 242.874846] __mutex_lock_slowpath+0x12/0x14 > Sep 23 11:47:09 kern.info kernel: [ 242.874866] mutex_lock+0x2f/0x34 > Sep 23 11:47:09 kern.info kernel: [ 242.874883] uevent_show+0x7a/0xf4 > Sep 23 11:47:09 kern.info kernel: [ 242.874902] ? _dev_info+0x4c/0x4c > Sep 23 11:47:09 kern.info kernel: [ 242.874920] ? device_match_any+0x10/0x10 > Sep 23 11:47:09 kern.info kernel: [ 242.874938] dev_attr_show+0x18/0x4c > Sep 23 11:47:09 kern.info kernel: [ 242.874956] sysfs_kf_seq_show+0x96/0xf8 > Sep 23 11:47:09 kern.info kernel: [ 242.874977] kernfs_seq_show+0x23/0x28 > Sep 23 11:47:09 kern.info kernel: [ 242.874995] seq_read_iter+0x196/0x484 > Sep 23 11:47:09 kern.info kernel: [ 242.875014] ? __do_fast_syscall_32+0x72/0xc0 > Sep 23 11:47:09 kern.info kernel: [ 242.875035] kernfs_fop_read_iter+0x11b/0x188 > Sep 23 11:47:09 kern.info kernel: [ 242.875054] ? rw_verify_area+0x49/0x124 > Sep 23 11:47:09 kern.info kernel: [ 242.875075] ? kernfs_vma_page_mkwrite+0x70/0x70 > Sep 23 11:47:09 kern.info kernel: [ 242.875096] vfs_read+0x270/0x368 > Sep 23 11:47:09 kern.info kernel: [ 242.875114] ksys_read+0x69/0xd8 > Sep 23 11:47:09 kern.info kernel: [ 242.875132] __ia32_sys_read+0x15/0x18 > Sep 23 11:47:09 kern.info kernel: [ 242.875150] ia32_sys_call+0x19e8/0x21a8 > Sep 23 11:47:09 kern.info kernel: [ 242.875170] __do_fast_syscall_32+0x68/0xc0 > Sep 23 11:47:09 kern.info kernel: [ 242.875189] ? irqentry_exit_to_user_mode+0x65/0x168 > Sep 23 11:47:09 kern.info kernel: [ 242.875212] do_fast_syscall_32+0x29/0x60 > Sep 23 11:47:09 kern.info kernel: [ 242.875231] do_SYSENTER_32+0x15/0x18 > Sep 23 11:47:09 kern.info kernel: [ 242.875248] entry_SYSENTER_32+0x98/0xf8 > Sep 23 11:47:09 kern.info kernel: [ 242.875268] EIP: 0xb7f6b579 > Sep 23 11:47:09 kern.info kernel: [ 242.875283] EAX: ffffffda EBX: 00000008 ECX: 012e2430 EDX: 00001000 > Sep 23 11:47:09 kern.info kernel: [ 242.875308] ESI: b7e83e34 EDI: b7e837a8 EBP: bfe43d58 ESP: bfe43cf0 > Sep 23 11:47:09 kern.info kernel: [ 242.875331] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 007b EFLAGS: 00200246 > Sep 23 11:48:07 kern.warn kernel: [ 300.922607] .not responding... > > Sep 23 11:49:10 kern.err kernel: [ 363.706632] INFO: task udevd:4800 blocked for more than 241 seconds. > Sep 23 11:49:10 kern.err kernel: [ 363.706665] Not tainted 6.9.9-686 #1 Debian 6.9.9-1 > Sep 23 11:49:10 kern.err kernel: [ 363.707717] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > Sep 23 11:49:10 kern.info kernel: [ 363.708768] task:udevd state:D stack:0 pid:4800 tgid:4800 ppid:400 flags:0x00000006 > Sep 23 11:49:10 kern.info kernel: [ 363.709808] Call Trace: > Sep 23 11:49:10 kern.info kernel: [ 363.710824] __schedule+0x406/0xb6c > Sep 23 11:49:10 kern.info kernel: [ 363.711854] schedule+0x25/0x10c > Sep 23 11:49:10 kern.info kernel: [ 363.712852] schedule_preempt_disabled+0x14/0x20 > Sep 23 11:49:10 kern.info kernel: [ 363.713853] __mutex_lock.constprop.0+0x315/0x644 > Sep 23 11:49:10 kern.info kernel: [ 363.714856] __mutex_lock_slowpath+0x12/0x14 > Sep 23 11:49:10 kern.info kernel: [ 363.715838] mutex_lock+0x2f/0x34 > Sep 23 11:49:10 kern.info kernel: [ 363.716801] uevent_show+0x7a/0xf4 > Sep 23 11:49:10 kern.info kernel: [ 363.717761] ? _dev_info+0x4c/0x4c > Sep 23 11:49:10 kern.info kernel: [ 363.718716] ? device_match_any+0x10/0x10 > Sep 23 11:49:10 kern.info kernel: [ 363.719666] dev_attr_show+0x18/0x4c > Sep 23 11:49:10 kern.info kernel: [ 363.720613] sysfs_kf_seq_show+0x96/0xf8 > Sep 23 11:49:10 kern.info kernel: [ 363.721560] kernfs_seq_show+0x23/0x28 > Sep 23 11:49:10 kern.info kernel: [ 363.722489] seq_read_iter+0x196/0x484 > Sep 23 11:49:10 kern.info kernel: [ 363.723412] ? __do_fast_syscall_32+0x72/0xc0 > Sep 23 11:49:10 kern.info kernel: [ 363.724328] kernfs_fop_read_iter+0x11b/0x188 > Sep 23 11:49:10 kern.info kernel: [ 363.725227] ? rw_verify_area+0x49/0x124 > Sep 23 11:49:10 kern.info kernel: [ 363.726118] ? kernfs_vma_page_mkwrite+0x70/0x70 > Sep 23 11:49:10 kern.info kernel: [ 363.727007] vfs_read+0x270/0x368 > Sep 23 11:49:10 kern.info kernel: [ 363.727896] ksys_read+0x69/0xd8 > Sep 23 11:49:10 kern.info kernel: [ 363.728773] __ia32_sys_read+0x15/0x18 > Sep 23 11:49:10 kern.info kernel: [ 363.729645] ia32_sys_call+0x19e8/0x21a8 > Sep 23 11:49:10 kern.info kernel: [ 363.730520] __do_fast_syscall_32+0x68/0xc0 > Sep 23 11:49:10 kern.info kernel: [ 363.731398] ? irqentry_exit_to_user_mode+0x65/0x168 > Sep 23 11:49:10 kern.info kernel: [ 363.732278] do_fast_syscall_32+0x29/0x60 > Sep 23 11:49:10 kern.info kernel: [ 363.733149] do_SYSENTER_32+0x15/0x18 > Sep 23 11:49:10 kern.info kernel: [ 363.734008] entry_SYSENTER_32+0x98/0xf8 > Sep 23 11:49:10 kern.info kernel: [ 363.734868] EIP: 0xb7f6b579 > Sep 23 11:49:10 kern.info kernel: [ 363.735719] EAX: ffffffda EBX: 00000008 ECX: 012e2430 EDX: 00001000 > Sep 23 11:49:10 kern.info kernel: [ 363.736586] ESI: b7e83e34 EDI: b7e837a8 EBP: bfe43d58 ESP: bfe43cf0 > Sep 23 11:49:10 kern.info kernel: [ 363.737445] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 007b EFLAGS: 00200246 >