Hello, syzbot found the following issue on: HEAD commit: 455e73a07f6e Merge tag 'clk-for-linus' of git://git.kernel.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing console output: https://syzkaller.appspot.com/x/log.txt?x=129fa2dfb00000 kernel config: https://syzkaller.appspot.com/x/.config?x=465c0933df32e292 dashboard link: https://syzkaller.appspot.com/bug?extid=0d6a22bbfd17e8c94788 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+0d6a22bbfd17e8c94788@xxxxxxxxxxxxxxxxxxxxxxxxx usb 5-1: media controller created dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. gp8psk_fe: Frontend attached usb 5-1: DVB: registering adapter 0 frontend 0 (Genpix DVB-S)... dvbdev: dvb_create_media_entity: media entity 'Genpix DVB-S' registered. general protection fault, probably for non-canonical address 0xe37ffbf11022d58a: 0000 [#1] PREEMPT SMP KASAN KASAN: maybe wild-memory-access in range [0x1bffff888116ac50-0x1bffff888116ac57] CPU: 1 PID: 4412 Comm: kworker/1:2 Not tainted 5.16.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event RIP: 0010:dvb_create_media_graph+0x115/0xbc0 drivers/media/dvb-core/dvbdev.c:628 Code: 3c 20 00 0f 85 d7 09 00 00 48 8b 43 10 48 8d 58 f0 49 39 c6 0f 84 87 00 00 00 e8 36 0f 2d fd 48 8d 7b 2c 48 89 f8 48 c1 e8 03 <42> 0f b6 14 20 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 RSP: 0018:ffffc90005696f70 EFLAGS: 00010203 RAX: 037ffff11022d58a RBX: 1bffff888116ac28 RCX: ffffc9000a361000 RDX: 0000000000040000 RSI: ffffffff84167e6a RDI: 1bffff888116ac54 RBP: 0000000000000000 R08: ffffffff86a4b8e0 R09: ffffffff84167ea1 R10: 0000000000000004 R11: 0000000080ffff88 R12: dffffc0000000000 R13: 0000000000000000 R14: ffff888116ac3908 R15: 0000000080ffff88 FS: 0000000000000000(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0d80901110 CR3: 000000010c0c2000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> dvb_usb_adapter_frontend_init+0x3b7/0x5b0 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:327 dvb_usb_adapter_init drivers/media/usb/dvb-usb/dvb-usb-init.c:90 [inline] dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:184 [inline] dvb_usb_device_init.cold+0xcdd/0x1483 drivers/media/usb/dvb-usb/dvb-usb-init.c:308 gp8psk_usb_probe+0x46/0x70 drivers/media/usb/dvb-usb/gp8psk.c:304 usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x245/0xcc0 drivers/base/dd.c:596 __driver_probe_device+0x338/0x4d0 drivers/base/dd.c:752 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:782 __device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:899 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x228/0x4a0 drivers/base/dd.c:970 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xc17/0x1ee0 drivers/base/core.c:3409 usb_set_configuration+0x101e/0x1900 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238 usb_probe_device+0xd9/0x2c0 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x245/0xcc0 drivers/base/dd.c:596 __driver_probe_device+0x338/0x4d0 drivers/base/dd.c:752 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:782 __device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:899 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x228/0x4a0 drivers/base/dd.c:970 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xc17/0x1ee0 drivers/base/core.c:3409 usb_new_device.cold+0x63f/0x108e drivers/usb/core/hub.c:2566 hub_port_connect drivers/usb/core/hub.c:5358 [inline] hub_port_connect_change drivers/usb/core/hub.c:5502 [inline] port_event drivers/usb/core/hub.c:5660 [inline] hub_event+0x2585/0x44d0 drivers/usb/core/hub.c:5742 process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307 process_scheduled_works kernel/workqueue.c:2370 [inline] worker_thread+0x833/0x1110 kernel/workqueue.c:2456 kthread+0x40b/0x500 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 </TASK> Modules linked in: ---[ end trace 89cde2584ae9d86b ]--- RIP: 0010:dvb_create_media_graph+0x115/0xbc0 drivers/media/dvb-core/dvbdev.c:628 Code: 3c 20 00 0f 85 d7 09 00 00 48 8b 43 10 48 8d 58 f0 49 39 c6 0f 84 87 00 00 00 e8 36 0f 2d fd 48 8d 7b 2c 48 89 f8 48 c1 e8 03 <42> 0f b6 14 20 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 RSP: 0018:ffffc90005696f70 EFLAGS: 00010203 RAX: 037ffff11022d58a RBX: 1bffff888116ac28 RCX: ffffc9000a361000 RDX: 0000000000040000 RSI: ffffffff84167e6a RDI: 1bffff888116ac54 RBP: 0000000000000000 R08: ffffffff86a4b8e0 R09: ffffffff84167ea1 R10: 0000000000000004 R11: 0000000080ffff88 R12: dffffc0000000000 R13: 0000000000000000 R14: ffff888116ac3908 R15: 0000000080ffff88 FS: 0000000000000000(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0d80901110 CR3: 000000010c0c2000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 3c 20 cmp $0x20,%al 2: 00 0f add %cl,(%rdi) 4: 85 d7 test %edx,%edi 6: 09 00 or %eax,(%rax) 8: 00 48 8b add %cl,-0x75(%rax) b: 43 10 48 8d rex.XB adc %cl,-0x73(%r8) f: 58 pop %rax 10: f0 49 39 c6 lock cmp %rax,%r14 14: 0f 84 87 00 00 00 je 0xa1 1a: e8 36 0f 2d fd callq 0xfd2d0f55 1f: 48 8d 7b 2c lea 0x2c(%rbx),%rdi 23: 48 89 f8 mov %rdi,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 0f b6 14 20 movzbl (%rax,%r12,1),%edx <-- trapping instruction 2f: 48 89 f8 mov %rdi,%rax 32: 83 e0 07 and $0x7,%eax 35: 83 c0 03 add $0x3,%eax 38: 38 d0 cmp %dl,%al 3a: 7c 08 jl 0x44 3c: 84 d2 test %dl,%dl 3e: 0f .byte 0xf 3f: 85 .byte 0x85 --- This report is generated by a bot. 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