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From: syzbot <syzbot+ef5de9c4f99c4edb4e49@syzkaller.appspotmail.com>
To: andreyknvl@google.com, linux-usb@vger.kernel.org,
	oneukum@suse.com, syzkaller-bugs@googlegroups.com
Subject: Re: KASAN: use-after-free Read in usbhid_power
Date: Wed, 24 Jul 2019 14:16:01 -0700
Message-ID: <000000000000ebd2de058e73d059@google.com> (raw)
In-Reply-To: <1564001709.4670.10.camel@suse.com>

Hello,

syzbot tried to test the proposed patch but build/boot failed:

    T1] devtmpfs: initialized
[    2.873454][    T1] clocksource: jiffies: mask: 0xffffffff max_cycles:  
0xffffffff, max_idle_ns: 19112604462750000 ns
[    2.873454][    T1] futex hash table entries: 512 (order: 4, 65536  
bytes, linear)
[    2.875783][    T1] PM: RTC time: 21:05:06, date: 2019-07-24
[    2.882105][    T1] NET: Registered protocol family 16
[    2.886588][    T1] audit: initializing netlink subsys (disabled)
[    2.888579][   T22] audit: type=2000 audit(1564002306.507:1):  
state=initialized audit_enabled=0 res=1
[    2.888579][    T1] cpuidle: using governor menu
[    2.893505][    T1] ACPI: bus type PCI registered
[    2.894935][    T1] PCI: Using configuration type 1 for base access
[    3.002926][    T1] HugeTLB registered 2.00 MiB page size, pre-allocated  
0 pages
[    3.003285][   T27] cryptomgr_test (27) used greatest stack depth: 30208  
bytes left
[    3.003285][   T29] kworker/u4:0 (29) used greatest stack depth: 27608  
bytes left
[    3.011409][   T43] kworker/u4:0 (43) used greatest stack depth: 27120  
bytes left
[    3.022044][    T1] ACPI: Added _OSI(Module Device)
[    3.022884][    T1] ACPI: Added _OSI(Processor Device)
[    3.023651][    T1] ACPI: Added _OSI(3.0 _SCP Extensions)
[    3.031207][    T1] ACPI: Added _OSI(Processor Aggregator Device)
[    3.031207][    T1] ACPI: Added _OSI(Linux-Dell-Video)
[    3.031249][    T1] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
[    3.032156][    T1] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics)
[    3.082907][    T1] ACPI: 2 ACPI AML tables successfully acquired and  
loaded
[    3.097843][    T1] ACPI: Interpreter enabled
[    3.098853][    T1] ACPI: (supports S0 S3 S4 S5)
[    3.099590][    T1] ACPI: Using IOAPIC for interrupt routing
[    3.100591][    T1] PCI: Using host bridge windows from ACPI; if  
necessary, use "pci=nocrs" and report a bug
[    3.104257][    T1] ACPI: Enabled 16 GPEs in block 00 to 0F
[    3.182493][    T1] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus  
00-ff])
[    3.183851][    T1] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM  
Segments MSI HPX-Type3]
[    3.185519][    T1] acpi PNP0A03:00: fail to add MMCONFIG information,  
can't access extended PCI configuration space under this bridge.
[    3.192575][    T1] PCI host bridge to bus 0000:00
[    3.193286][    T1] pci_bus 0000:00: root bus resource [io   
0x0000-0x0cf7 window]
[    3.194360][    T1] pci_bus 0000:00: root bus resource [io   
0x0d00-0xffff window]
[    3.195393][    T1] pci_bus 0000:00: root bus resource [mem  
0x000a0000-0x000bffff window]
[    3.196522][    T1] pci_bus 0000:00: root bus resource [mem  
0xc0000000-0xfebfffff window]
[    3.197715][    T1] pci_bus 0000:00: root bus resource [bus 00-ff]
[    3.198886][    T1] pci 0000:00:00.0: [8086:1237] type 00 class 0x060000
[    3.204649][    T1] pci 0000:00:01.0: [8086:7110] type 00 class 0x060100
[    3.222865][    T1] pci 0000:00:01.3: [8086:7113] type 00 class 0x068000
[    3.241306][    T1] pci 0000:00:01.3: quirk: [io  0xb000-0xb03f] claimed  
by PIIX4 ACPI
[    3.245348][    T1] pci 0000:00:03.0: [1af4:1004] type 00 class 0x000000
[    3.251166][    T1] pci 0000:00:03.0: reg 0x10: [io  0xc000-0xc03f]
[    3.255600][    T1] pci 0000:00:03.0: reg 0x14: [mem  
0xfebfe000-0xfebfe07f]
[    3.271694][    T1] pci 0000:00:04.0: [1af4:1000] type 00 class 0x020000
[    3.277964][    T1] pci 0000:00:04.0: reg 0x10: [io  0xc040-0xc07f]
[    3.283798][    T1] pci 0000:00:04.0: reg 0x14: [mem  
0xfebff000-0xfebff07f]
[    3.310020][    T1] ACPI: PCI Interrupt Link [LNKA] (IRQs 5 *10 11)
[    3.314509][    T1] ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11)
[    3.318340][    T1] ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11)
[    3.322364][    T1] ACPI: PCI Interrupt Link [LNKD] (IRQs 5 10 *11)
[    3.324796][    T1] ACPI: PCI Interrupt Link [LNKS] (IRQs *9)
[    3.332253][    T1] vgaarb: loaded
[    3.333359][    T1] SCSI subsystem initialized
[    3.334153][    T1] ACPI: bus type USB registered
[    3.334153][    T1] usbcore: registered new interface driver usbfs
[    3.334153][    T1] usbcore: registered new interface driver hub
[    3.341195][    T1] usbcore: registered new device driver usb
[    3.341471][    T1] mc: Linux media interface: v0.10
[    3.342295][    T1] videodev: Linux video capture interface: v2.00
[    3.343599][    T1] pps_core: LinuxPPS API ver. 1 registered
[    3.344464][    T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007  
Rodolfo Giometti <giometti@linux.it>
[    3.345876][    T1] PTP clock support registered
[    3.346781][    T1] EDAC MC: Ver: 3.0.0
[    3.346781][    T1] Advanced Linux Sound Architecture Driver Initialized.
[    3.346781][    T1] PCI: Using ACPI for IRQ routing
[    3.353286][    T1] Bluetooth: Core ver 2.22
[    3.354202][    T1] NET: Registered protocol family 31
[    3.354955][    T1] Bluetooth: HCI device and connection manager  
initialized
[    3.355989][    T1] Bluetooth: HCI socket layer initialized
[    3.356767][    T1] Bluetooth: L2CAP socket layer initialized
[    3.357644][    T1] Bluetooth: SCO socket layer initialized
[    3.358472][    T1] NET: Registered protocol family 8
[    3.359220][    T1] NET: Registered protocol family 20
[    3.360093][    T1] NetLabel: Initializing
[    3.360715][    T1] NetLabel:  domain hash size = 128
[    3.361148][    T1] NetLabel:  protocols = UNLABELED CIPSOv4 CALIPSO
[    3.362492][    T1] NetLabel:  unlabeled traffic allowed by default
[    3.363724][    T1] nfc: nfc_init: NFC Core ver 0.1
[    3.363724][    T1] NET: Registered protocol family 39
[    3.365420][    T1] clocksource: Switched to clocksource kvm-clock
[    4.371843][    T1] VFS: Disk quotas dquot_6.6.0
[    4.372992][    T1] VFS: Dquot-cache hash table entries: 512 (order 0,  
4096 bytes)
[    4.374598][    T1] *** VALIDATE hugetlbfs ***
[    4.376107][    T1] pnp: PnP ACPI init
[    4.387313][    T1] pnp: PnP ACPI: found 7 devices
[    4.413711][    T1] thermal_sys: Registered thermal governor 'step_wise'
[    4.413717][    T1] thermal_sys: Registered thermal governor 'user_space'
[    4.419892][    T1] clocksource: acpi_pm: mask: 0xffffff max_cycles:  
0xffffff, max_idle_ns: 2085701024 ns
[    4.422972][    T1] pci_bus 0000:00: resource 4 [io  0x0000-0x0cf7  
window]
[    4.424189][    T1] pci_bus 0000:00: resource 5 [io  0x0d00-0xffff  
window]
[    4.425394][    T1] pci_bus 0000:00: resource 6 [mem  
0x000a0000-0x000bffff window]
[    4.426791][    T1] pci_bus 0000:00: resource 7 [mem  
0xc0000000-0xfebfffff window]
[    4.428947][    T1] NET: Registered protocol family 2
[    4.431371][    T1] tcp_listen_portaddr_hash hash table entries: 4096  
(order: 6, 294912 bytes, linear)
[    4.433417][    T1] TCP established hash table entries: 65536 (order: 7,  
524288 bytes, linear)
[    4.435847][    T1] TCP bind hash table entries: 65536 (order: 10,  
4194304 bytes, linear)
[    4.443410][    T1] TCP: Hash tables configured (established 65536 bind  
65536)
[    4.445306][    T1] UDP hash table entries: 4096 (order: 7, 655360  
bytes, linear)
[    4.447824][    T1] UDP-Lite hash table entries: 4096 (order: 7, 655360  
bytes, linear)
[    4.450432][    T1] NET: Registered protocol family 1
[    4.453345][    T1] RPC: Registered named UNIX socket transport module.
[    4.454510][    T1] RPC: Registered udp transport module.
[    4.455454][    T1] RPC: Registered tcp transport module.
[    4.456446][    T1] RPC: Registered tcp NFSv4.1 backchannel transport  
module.
[    4.458621][    T1] pci 0000:00:00.0: Limiting direct PCI/PCI transfers
[    4.459864][    T1] PCI: CLS 0 bytes, default 64
[    4.461378][    T1] PCI-DMA: Using software bounce buffering for IO  
(SWIOTLB)
[    4.462761][    T1] software IO TLB: mapped [mem 0xbbffd000-0xbfffd000]  
(64MB)
[    4.466413][    T1] RAPL PMU: API unit is 2^-32 Joules, 0 fixed  
counters, 10737418240 ms ovfl timer
[    4.467994][    T1] clocksource: tsc: mask: 0xffffffffffffffff  
max_cycles: 0x212735223b2, max_idle_ns: 440795277976 ns
[    4.469791][    T1] clocksource: Switched to clocksource tsc
[    4.473423][    T1] check: Scanning for low memory corruption every 60  
seconds
[    4.478343][    T1] Initialise system trusted keyrings
[    4.479810][    T1] workingset: timestamp_bits=40 max_order=21  
bucket_order=0
[    4.521420][    T1] NFS: Registering the id_resolver key type
[    4.522729][    T1] Key type id_resolver registered
[    4.523526][    T1] Key type id_legacy registered
[    4.524942][    T1] 9p: Installing v9fs 9p2000 file system support
[    4.531784][    T1] Key type asymmetric registered
[    4.532779][    T1] Asymmetric key parser 'x509' registered
[    4.533772][    T1] Block layer SCSI generic (bsg) driver version 0.4  
loaded (major 247)
[    4.535226][    T1] io scheduler mq-deadline registered
[    4.536032][    T1] io scheduler kyber registered
[    4.539777][    T1] usbcore: registered new interface driver udlfb
[    4.541021][    T1] usbcore: registered new interface driver smscufx
[    4.543014][    T1] input: Power Button as  
/devices/LNXSYSTM:00/LNXPWRBN:00/input/input0
[    4.544520][    T1] ACPI: Power Button [PWRF]
[    4.545743][    T1] input: Sleep Button as  
/devices/LNXSYSTM:00/LNXSLPBN:00/input/input1
[    4.547129][    T1] ACPI: Sleep Button [SLPF]
[    4.560609][    T1] PCI Interrupt Link [LNKC] enabled at IRQ 11
[    4.562043][    T1] virtio-pci 0000:00:03.0: virtio_pci: leaving for  
legacy driver
[    4.575190][    T1] PCI Interrupt Link [LNKD] enabled at IRQ 10
[    4.576547][    T1] virtio-pci 0000:00:04.0: virtio_pci: leaving for  
legacy driver
[    4.582237][    T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing  
enabled
[    4.606272][    T1] 00:03: ttyS0 at I/O 0x3f8 (irq = 4, base_baud =  
115200) is a 16550A
[    4.631884][    T1] 00:04: ttyS1 at I/O 0x2f8 (irq = 3, base_baud =  
115200) is a 16550A
[    4.656881][    T1] 00:05: ttyS2 at I/O 0x3e8 (irq = 6, base_baud =  
115200) is a 16550A
[    4.682193][    T1] 00:06: ttyS3 at I/O 0x2e8 (irq = 7, base_baud =  
115200) is a 16550A
[    4.687302][    T1] Non-volatile memory driver v1.3
[    4.688815][    T1] Linux agpgart interface v0.103
[    4.695497][    T1] usbcore: registered new interface driver udl
[    4.719445][    T1] loop: module loaded
[    4.721039][    T1] usbcore: registered new interface driver rtsx_usb
[    4.723136][    T1] usbcore: registered new interface driver viperboard
[    4.725065][    T1] usbcore: registered new interface driver dln2
[    4.726853][    T1] usbcore: registered new interface driver pn533_usb
[    4.729089][    T1] usbcore: registered new interface driver port100
[    4.731604][    T1] usbcore: registered new interface driver nfcmrvl
[    4.746210][    T1] scsi host0: Virtio SCSI HBA
[    4.792288][    T1] kasan: CONFIG_KASAN_INLINE enabled
[    4.793729][    T1] kasan: GPF could be caused by NULL-ptr deref or user  
memory access
[    4.795771][    T1] general protection fault: 0000 [#1] SMP KASAN
[    4.797547][    T1] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.3.0-rc1+  
#1
[    4.799786][    T1] Hardware name: Google Google Compute Engine/Google  
Compute Engine, BIOS Google 01/01/2011
[    4.801153][    T1] RIP: 0010:dma_direct_max_mapping_size+0x73/0x19a
[    4.801153][    T1] Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 1e  
01 00 00 48 8b 9d 38 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1  
ea 03 <80> 3c 02 00 0f 85 06 01 00 00 48 8d bd 48 03 00 00 48 8b 1b 48 b8
[    4.801153][    T1] RSP: 0000:ffff8881da18f628 EFLAGS: 00010246
[    4.801153][    T1] RAX: dffffc0000000000 RBX: 0000000000000000 RCX:  
ffffffff812d716c
[    4.801153][    T1] RDX: 0000000000000000 RSI: ffffffff812d7189 RDI:  
ffff8881d829fa78
[    4.801153][    T1] RBP: ffff8881d829f740 R08: ffff8881da180000 R09:  
ffffed103ad210cb
[    4.801153][    T1] R10: ffffed103ad210ca R11: ffff8881d6908657 R12:  
ffff8881d829f740
[    4.801153][    T1] R13: ffff8881d76a57b0 R14: 0000000000000200 R15:  
0000000000000000
[    4.801153][    T1] FS:  0000000000000000(0000)  
GS:ffff8881db300000(0000) knlGS:0000000000000000
[    4.801153][    T1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    4.801153][    T1] CR2: 0000000000000000 CR3: 0000000006a21000 CR4:  
00000000001406e0
[    4.801153][    T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2:  
0000000000000000
[    4.801153][    T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:  
0000000000000400
[    4.801153][    T1] Call Trace:
[    4.801153][    T1]  dma_max_mapping_size+0xb5/0xf0
[    4.801153][    T1]  __scsi_init_queue+0x17e/0x510
[    4.801153][    T1]  scsi_mq_alloc_queue+0xcb/0x170
[    4.801153][    T1]  scsi_alloc_sdev+0x82e/0xc50
[    4.801153][    T1]  scsi_probe_and_add_lun+0x1ee5/0x2cd0
[    4.801153][    T1]  ? find_held_lock+0x2d/0x110
[    4.801153][    T1]  ? __pm_runtime_resume+0x111/0x180
[    4.801153][    T1]  ? scsi_alloc_sdev+0xc50/0xc50
[    4.801153][    T1]  ? mark_held_locks+0x9f/0xe0
[    4.801153][    T1]  ? _raw_spin_unlock_irqrestore+0x3e/0x50
[    4.801153][    T1]  ? lockdep_hardirqs_on+0x379/0x580
[    4.801153][    T1]  __scsi_scan_target+0x273/0xc30
[    4.801153][    T1]  ? find_held_lock+0x2d/0x110
[    4.801153][    T1]  ? __pm_runtime_resume+0x111/0x180
[    4.801153][    T1]  ? scsi_probe_and_add_lun+0x2cd0/0x2cd0
[    4.801153][    T1]  ? mark_lock+0xbc/0x1130
[    4.801153][    T1]  scsi_scan_channel.part.0+0x126/0x1a0
[    4.801153][    T1]  scsi_scan_host_selected+0x2bb/0x3f0
[    4.801153][    T1]  do_scsi_scan_host+0x1e8/0x260
[    4.801153][    T1]  scsi_scan_host+0x37c/0x440
[    4.801153][    T1]  virtscsi_probe+0x9b7/0xbb5
[    4.801153][    T1]  ? virtscsi_restore+0x240/0x240
[    4.801153][    T1]  virtio_dev_probe+0x463/0x710
[    4.801153][    T1]  ? virtio_device_restore+0x1f0/0x1f0
[    4.801153][    T1]  really_probe+0x281/0x650
[    4.801153][    T1]  driver_probe_device+0x101/0x1b0
[    4.801153][    T1]  device_driver_attach+0x108/0x140
[    4.801153][    T1]  __driver_attach+0xda/0x240
[    4.801153][    T1]  ? device_driver_attach+0x140/0x140
[    4.801153][    T1]  bus_for_each_dev+0x14b/0x1d0
[    4.801153][    T1]  ? subsys_dev_iter_exit+0x20/0x20
[    4.801153][    T1]  bus_add_driver+0x44e/0x5a0
[    4.801153][    T1]  driver_register+0x1c4/0x320
[    4.801153][    T1]  ? spi_transport_init+0x132/0x132
[    4.801153][    T1]  init+0xa1/0x115
[    4.801153][    T1]  do_one_initcall+0xf0/0x614
[    4.801153][    T1]  ? perf_trace_initcall_level+0x3e0/0x3e0
[    4.801153][    T1]  ? parameq+0x110/0x160
[    4.801153][    T1]  kernel_init_freeable+0x4a9/0x596
[    4.801153][    T1]  ? rest_init+0x371/0x371
[    4.801153][    T1]  kernel_init+0xd/0x1bf
[    4.801153][    T1]  ret_from_fork+0x24/0x30
[    4.801153][    T1] Modules linked in:
[    4.899360][    T1] ---[ end trace 6822302347232fe4 ]---
[    4.900898][    T1] RIP: 0010:dma_direct_max_mapping_size+0x73/0x19a
[    4.902841][    T1] Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 1e  
01 00 00 48 8b 9d 38 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1  
ea 03 <80> 3c 02 00 0f 85 06 01 00 00 48 8d bd 48 03 00 00 48 8b 1b 48 b8
[    4.908805][    T1] RSP: 0000:ffff8881da18f628 EFLAGS: 00010246
[    4.910502][    T1] RAX: dffffc0000000000 RBX: 0000000000000000 RCX:  
ffffffff812d716c
[    4.913042][    T1] RDX: 0000000000000000 RSI: ffffffff812d7189 RDI:  
ffff8881d829fa78
[    4.915172][    T1] RBP: ffff8881d829f740 R08: ffff8881da180000 R09:  
ffffed103ad210cb
[    4.917564][    T1] R10: ffffed103ad210ca R11: ffff8881d6908657 R12:  
ffff8881d829f740
[    4.919814][    T1] R13: ffff8881d76a57b0 R14: 0000000000000200 R15:  
0000000000000000
[    4.922373][    T1] FS:  0000000000000000(0000)  
GS:ffff8881db300000(0000) knlGS:0000000000000000
[    4.925294][    T1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    4.927267][    T1] CR2: 0000000000000000 CR3: 0000000006a21000 CR4:  
00000000001406e0
[    4.929685][    T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2:  
0000000000000000
[    4.931826][    T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:  
0000000000000400
[    4.934300][    T1] Kernel panic - not syncing: Fatal exception
[    4.936582][    T1] Kernel Offset: disabled
[    4.937961][    T1] Rebooting in 86400 seconds..


Error text is too large and was truncated, full error text is at:
https://syzkaller.appspot.com/x/error.txt?x=138cfa5c600000


Tested on:

commit:         1154c0b0 wip
git tree:       https://github.com/google/kasan.git usb-fuzzer
kernel config:  https://syzkaller.appspot.com/x/.config?x=b228fb19779df17d
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
patch:          https://syzkaller.appspot.com/x/patch.diff?x=17678cc8600000


  parent reply index

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-23 12:48 syzbot
2019-07-24 14:17 ` Oliver Neukum
2019-07-24 14:24   ` Andrey Konovalov
2019-07-24 20:55 ` Oliver Neukum
2019-07-24 21:02   ` Alan Stern
2019-07-25  9:33     ` Oliver Neukum
2019-07-25 15:09       ` Alan Stern
2019-08-08 18:54         ` Andrey Konovalov
2019-08-08 19:37           ` Alan Stern
2019-08-09  7:35             ` AW: " Schmid, Carsten
2019-08-09  7:55               ` Greg KH
2019-08-09  9:34                 ` AW: " Schmid, Carsten
2019-08-09 10:20                   ` Hans de Goede
2019-08-09 10:47                     ` AW: " Schmid, Carsten
2019-08-09 10:53                       ` Hans de Goede
2019-08-09 12:38                         ` AW: " Schmid, Carsten
2019-08-09 12:54                           ` Greg KH
2019-08-09 13:00                             ` AW: " Schmid, Carsten
2019-08-09 13:38                               ` Greg KH
2019-08-10 11:12                           ` AW: " Hans de Goede
2019-08-09 17:36             ` Andrey Konovalov
2019-08-09 18:12               ` syzbot
2019-08-12 14:29                 ` Andrey Konovalov
2019-08-09 20:26           ` Oliver Neukum
2019-07-24 21:16   ` syzbot [this message]
2019-07-25 11:22     ` Andrey Konovalov
2019-07-25 12:15 ` Oliver Neukum
2019-07-25 12:27   ` syzbot

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  switches of git-send-email(1):

  git send-email \
    --in-reply-to=000000000000ebd2de058e73d059@google.com \
    --to=syzbot+ef5de9c4f99c4edb4e49@syzkaller.appspotmail.com \
    --cc=andreyknvl@google.com \
    --cc=linux-usb@vger.kernel.org \
    --cc=oneukum@suse.com \
    --cc=syzkaller-bugs@googlegroups.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-USB Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-usb/0 linux-usb/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-usb linux-usb/ https://lore.kernel.org/linux-usb \
		linux-usb@vger.kernel.org
	public-inbox-index linux-usb

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-usb


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git