dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. general protection fault, probably for non-canonical address 0xe45ffbf11021859d: 0000 [#1] PREEMPT SMP KASAN KASAN: maybe wild-memory-access in range [0x22ffff88810c2ce8-0x22ffff88810c2cef] CPU: 0 PID: 4144 Comm: kworker/0:6 Not tainted 5.17.0-rc4-syzkaller-00081-ga5d847b0afd3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event RIP: 0010:__media_entity_remove_link+0x53/0xa10 drivers/media/mc/mc-entity.c:590 Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 14 09 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5e 30 48 8d 7b 20 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 e7 08 00 00 4c 8b 7b 20 4c 3b 7c 24 18 0f 84 84 RSP: 0018:ffffc90001756d78 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 22ffff88810c2cc8 RCX: ffffc9000c049000 RDX: 045ffff11021859d RSI: ffffffff8412bd9b RDI: 22ffff88810c2ce8 RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff8a7ec7b7 R10: 0000000000000001 R11: 0000000000000000 R12: ffff888111254300 R13: ffff888111254350 R14: ffff8881112547d1 R15: ffff8881112547d1 FS: 0000000000000000(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f05b7220018 CR3: 00000001307a7000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __media_entity_remove_links+0x86/0x160 drivers/media/mc/mc-entity.c:768 __media_device_unregister_entity+0x187/0x300 drivers/media/mc/mc-device.c:597 media_device_unregister_entity+0x49/0x70 drivers/media/mc/mc-device.c:689 dvb_media_device_free+0x1d5/0x680 drivers/media/dvb-core/dvbdev.c:216 dvb_remove_device.part.0+0x9c/0x260 drivers/media/dvb-core/dvbdev.c:558 dvb_remove_device drivers/media/dvb-core/dvbdev.c:551 [inline] dvb_unregister_device+0x1b/0x60 drivers/media/dvb-core/dvbdev.c:580 dvb_dmxdev_release+0x1c9/0x630 drivers/media/dvb-core/dmxdev.c:1462 dvb_usbv2_adapter_dvb_exit drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:520 [inline] dvb_usbv2_adapter_exit drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:827 [inline] dvb_usbv2_exit.isra.0+0x184/0x9c0 drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:843 dvb_usbv2_probe+0x59e/0x7d0 drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:993 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+0xb83/0x1e20 drivers/base/core.c:3405 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+0xb83/0x1e20 drivers/base/core.c:3405 usb_new_device.cold+0x63f/0x108e drivers/usb/core/hub.c:2566 hub_port_connect drivers/usb/core/hub.c:5363 [inline] hub_port_connect_change drivers/usb/core/hub.c:5507 [inline] port_event drivers/usb/core/hub.c:5665 [inline] hub_event+0x2585/0x44d0 drivers/usb/core/hub.c:5747 process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307 worker_thread+0x657/0x1110 kernel/workqueue.c:2454 kthread+0x2ef/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__media_entity_remove_link+0x53/0xa10 drivers/media/mc/mc-entity.c:590 Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 14 09 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5e 30 48 8d 7b 20 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 e7 08 00 00 4c 8b 7b 20 4c 3b 7c 24 18 0f 84 84 RSP: 0018:ffffc90001756d78 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 22ffff88810c2cc8 RCX: ffffc9000c049000 RDX: 045ffff11021859d RSI: ffffffff8412bd9b RDI: 22ffff88810c2ce8 RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff8a7ec7b7 R10: 0000000000000001 R11: 0000000000000000 R12: ffff888111254300 R13: ffff888111254350 R14: ffff8881112547d1 R15: ffff8881112547d1 FS: 0000000000000000(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f05b7220018 CR3: 00000001307a7000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 89 fa mov %rdi,%rdx 3: 48 c1 ea 03 shr $0x3,%rdx 7: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) b: 0f 85 14 09 00 00 jne 0x925 11: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 18: fc ff df 1b: 49 8b 5e 30 mov 0x30(%r14),%rbx 1f: 48 8d 7b 20 lea 0x20(%rbx),%rdi 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 e7 08 00 00 jne 0x91b 34: 4c 8b 7b 20 mov 0x20(%rbx),%r15 38: 4c 3b 7c 24 18 cmp 0x18(%rsp),%r15 3d: 0f .byte 0xf 3e: 84 .byte 0x84 3f: 84 .byte 0x84