Warning: Permanently added '10.128.0.247' (ECDSA) to the list of known hosts. executing program [ 31.820913][ T83] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 32.060892][ T83] usb 1-1: Using ep0 maxpacket: 8 [ 32.180988][ T83] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x82 has wMaxPacketSize 0, skipping [ 32.191030][ T83] usb 1-1: New USB device found, idVendor=1b80, idProduct=e309, bcdDevice=d8.07 [ 32.200026][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 32.209756][ T83] usb 1-1: config 0 descriptor?? [ 32.231039][ T1714] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 32.252993][ T83] em28xx 1-1:0.0: New device @ 480 Mbps (1b80:e309, interface 0, class 0) [ 32.261787][ T83] em28xx 1-1:0.0: Video interface 0 found: bulk executing program [ 32.490937][ T83] em28xx 1-1:0.0: unknown em28xx chip ID (0) [ 32.641002][ T83] em28xx 1-1:0.0: reading from i2c device at 0xa0 failed (error=-5) [ 32.649106][ T83] em28xx 1-1:0.0: board has no eeprom [ 32.761356][ T83] em28xx 1-1:0.0: Identified as Easy Cap Capture DC-60 (card=64) [ 32.769119][ T83] em28xx 1-1:0.0: analog set to bulk mode. [ 32.777183][ T17] em28xx 1-1:0.0: Registering V4L2 extension [ 32.786831][ T83] usb 1-1: USB disconnect, device number 2 [ 32.794197][ T83] em28xx 1-1:0.0: Disconnecting em28xx [ 32.799928][ T17] em28xx 1-1:0.0: Config register raw data: 0xffffffed [ 32.806888][ T17] em28xx 1-1:0.0: AC97 chip type couldn't be determined [ 32.813848][ T17] em28xx 1-1:0.0: No AC97 audio processor [ 32.821413][ T17] usb 1-1: Decoder not found [ 32.826013][ T17] em28xx 1-1:0.0: failed to create media graph [ 32.832413][ T17] em28xx 1-1:0.0: V4L2 device video0 deregistered [ 32.839969][ T17] em28xx 1-1:0.0: Remote control support is not available for this card. [ 32.840060][ T1720] ================================================================== [ 32.849002][ T83] em28xx 1-1:0.0: Closing input extension [ 32.856526][ T1720] BUG: KASAN: use-after-free in v4l2_fh_init+0x279/0x2c0 [ 32.856536][ T1720] Read of size 8 at addr ffff8881cf808850 by task v4l_id/1720 [ 32.856539][ T1720] [ 32.856553][ T1720] CPU: 0 PID: 1720 Comm: v4l_id Not tainted 5.4.0-rc6+ #0 [ 32.856559][ T1720] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.856568][ T1720] Call Trace: [ 32.856585][ T1720] dump_stack+0xca/0x13e [ 32.904698][ T1720] ? v4l2_fh_init+0x279/0x2c0 [ 32.909353][ T1720] ? v4l2_fh_init+0x279/0x2c0 [ 32.914007][ T1720] print_address_description.constprop.0+0x36/0x50 [ 32.920497][ T1720] ? v4l2_fh_init+0x279/0x2c0 [ 32.925154][ T1720] ? v4l2_fh_init+0x279/0x2c0 [ 32.929808][ T1720] __kasan_report.cold+0x1a/0x33 [ 32.934720][ T1720] ? v4l2_fh_init+0x279/0x2c0 [ 32.939386][ T1720] kasan_report+0xe/0x20 [ 32.943607][ T1720] v4l2_fh_init+0x279/0x2c0 [ 32.948087][ T1720] v4l2_fh_open+0x88/0xc0 [ 32.952670][ T1720] em28xx_v4l2_open+0x11a/0x460 [ 32.959671][ T1720] ? refcount_inc_checked+0x1d/0x60 [ 32.964859][ T1720] v4l2_open+0x20f/0x3d0 [ 32.969077][ T1720] ? v4l2_release+0x390/0x390 [ 32.973732][ T1720] chrdev_open+0x219/0x5c0 [ 32.978124][ T1720] ? cdev_put.part.0+0x50/0x50 [ 32.982875][ T1720] do_dentry_open+0x494/0x1120 [ 32.987617][ T1720] ? cdev_put.part.0+0x50/0x50 [ 32.992357][ T1720] ? chmod_common+0x3c0/0x3c0 [ 32.997010][ T1720] ? inode_permission+0xbe/0x3a0 [ 33.001942][ T1720] path_openat+0x1430/0x3ff0 [ 33.007396][ T1720] ? save_stack+0x1b/0x80 [ 33.011699][ T1720] ? do_sys_open+0x294/0x580 [ 33.016266][ T1720] ? do_syscall_64+0xb7/0x580 [ 33.020920][ T1720] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.026962][ T1720] ? path_lookupat.isra.0+0x8d0/0x8d0 [ 33.032323][ T1720] ? __lock_acquire+0x145e/0x3b60 [ 33.037333][ T1720] do_filp_open+0x1a1/0x280 [ 33.041813][ T1720] ? may_open_dev+0xf0/0xf0 [ 33.046441][ T1720] ? __alloc_fd+0x46d/0x600 [ 33.051002][ T1720] ? do_raw_spin_lock+0x11a/0x280 [ 33.056038][ T1720] ? do_raw_spin_unlock+0x50/0x220 [ 33.061139][ T1720] ? _raw_spin_unlock+0x1f/0x30 [ 33.065999][ T1720] ? __alloc_fd+0x46d/0x600 [ 33.070490][ T1720] do_sys_open+0x3c0/0x580 [ 33.074892][ T1720] ? filp_open+0x70/0x70 [ 33.079170][ T1720] ? trace_hardirqs_off_caller+0x55/0x1e0 [ 33.084884][ T1720] do_syscall_64+0xb7/0x580 [ 33.089460][ T1720] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.095328][ T1720] RIP: 0033:0x7f7d2b080120 [ 33.099722][ T1720] Code: 48 8b 15 1b 4d 2b 00 f7 d8 64 89 02 83 c8 ff c3 90 90 90 90 90 90 90 90 90 90 83 3d d5 a4 2b 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 5e 8c 01 00 48 89 04 24 [ 33.119302][ T1720] RSP: 002b:00007ffe1662ea68 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 33.127694][ T1720] RAX: ffffffffffffffda RBX: 00007ffe1662ebc8 RCX: 00007f7d2b080120 [ 33.135643][ T1720] RDX: 00007f7d2b335138 RSI: 0000000000000000 RDI: 00007ffe1662ff1f [ 33.143603][ T1720] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 33.151549][ T1720] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000400884 [ 33.159510][ T1720] R13: 00007ffe1662ebc0 R14: 0000000000000000 R15: 0000000000000000 [ 33.167459][ T1720] [ 33.169767][ T1720] Allocated by task 17: [ 33.173909][ T1720] save_stack+0x1b/0x80 [ 33.178042][ T1720] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 33.183655][ T1720] em28xx_v4l2_init.cold+0x93/0x3365 [ 33.188914][ T1720] em28xx_init_extension+0x12f/0x1f0 [ 33.194172][ T1720] request_module_async+0x5d/0x70 [ 33.199172][ T1720] process_one_work+0x92b/0x1530 [ 33.204084][ T1720] worker_thread+0x96/0xe20 [ 33.208563][ T1720] kthread+0x318/0x420 [ 33.212607][ T1720] ret_from_fork+0x24/0x30 [ 33.217008][ T1720] [ 33.219320][ T1720] Freed by task 17: [ 33.223139][ T1720] save_stack+0x1b/0x80 [ 33.227294][ T1720] __kasan_slab_free+0x130/0x180 [ 33.232207][ T1720] kfree+0xe4/0x320 [ 33.236037][ T1720] em28xx_v4l2_init.cold+0x2cf/0x3365 [ 33.241389][ T1720] em28xx_init_extension+0x12f/0x1f0 [ 33.246653][ T1720] request_module_async+0x5d/0x70 [ 33.251661][ T1720] process_one_work+0x92b/0x1530 [ 33.256577][ T1720] worker_thread+0x96/0xe20 [ 33.261059][ T1720] kthread+0x318/0x420 [ 33.265106][ T1720] ret_from_fork+0x24/0x30 [ 33.269494][ T1720] [ 33.271801][ T1720] The buggy address belongs to the object at ffff8881cf808000 [ 33.271801][ T1720] which belongs to the cache kmalloc-8k of size 8192 [ 33.286005][ T1720] The buggy address is located 2128 bytes inside of [ 33.286005][ T1720] 8192-byte region [ffff8881cf808000, ffff8881cf80a000) [ 33.299481][ T1720] The buggy address belongs to the page: [ 33.305133][ T1720] page:ffffea00073e0200 refcount:1 mapcount:0 mapping:ffff8881da00c500 index:0x0 compound_mapcount: 0 [ 33.316142][ T1720] flags: 0x200000000010200(slab|head) [ 33.321507][ T1720] raw: 0200000000010200 dead000000000100 dead000000000122 ffff8881da00c500 [ 33.330083][ T1720] raw: 0000000000000000 0000000080020002 00000001ffffffff 0000000000000000 [ 33.338660][ T1720] page dumped because: kasan: bad access detected [ 33.345051][ T1720] [ 33.347359][ T1720] Memory state around the buggy address: [ 33.352980][ T1720] ffff8881cf808700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.361022][ T1720] ffff8881cf808780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.369188][ T1720] >ffff8881cf808800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.377225][ T1720] ^ [ 33.383877][ T1720] ffff8881cf808880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.391943][ T1720] ffff8881cf808900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.399987][ T1720] ================================================================== [ 33.408070][ T1720] Disabling lock debugging due to kernel taint [ 33.414298][ T1720] Kernel panic - not syncing: panic_on_warn set ... [ 33.420881][ T1720] CPU: 0 PID: 1720 Comm: v4l_id Tainted: G B 5.4.0-rc6+ #0 [ 33.429353][ T1720] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.439383][ T1720] Call Trace: [ 33.442674][ T1720] dump_stack+0xca/0x13e [ 33.446897][ T1720] panic+0x2aa/0x6e1 [ 33.450767][ T1720] ? add_taint.cold+0x16/0x16 [ 33.455422][ T1720] ? v4l2_fh_init+0x279/0x2c0 [ 33.460076][ T1720] ? trace_hardirqs_on+0x55/0x1e0 [ 33.465077][ T1720] ? v4l2_fh_init+0x279/0x2c0 [ 33.469730][ T1720] end_report+0x43/0x49 [ 33.473871][ T1720] ? v4l2_fh_init+0x279/0x2c0 [ 33.478524][ T1720] __kasan_report.cold+0xd/0x33 [ 33.483351][ T1720] ? v4l2_fh_init+0x279/0x2c0 [ 33.488005][ T1720] kasan_report+0xe/0x20 [ 33.492225][ T1720] v4l2_fh_init+0x279/0x2c0 [ 33.496814][ T1720] v4l2_fh_open+0x88/0xc0 [ 33.501124][ T1720] em28xx_v4l2_open+0x11a/0x460 [ 33.505969][ T1720] ? refcount_inc_checked+0x1d/0x60 [ 33.511162][ T1720] v4l2_open+0x20f/0x3d0 [ 33.515391][ T1720] ? v4l2_release+0x390/0x390 [ 33.520050][ T1720] chrdev_open+0x219/0x5c0 [ 33.524445][ T1720] ? cdev_put.part.0+0x50/0x50 [ 33.529241][ T1720] do_dentry_open+0x494/0x1120 [ 33.534035][ T1720] ? cdev_put.part.0+0x50/0x50 [ 33.538788][ T1720] ? chmod_common+0x3c0/0x3c0 [ 33.543445][ T1720] ? inode_permission+0xbe/0x3a0 [ 33.548505][ T1720] path_openat+0x1430/0x3ff0 [ 33.553075][ T1720] ? save_stack+0x1b/0x80 [ 33.557381][ T1720] ? do_sys_open+0x294/0x580 [ 33.561948][ T1720] ? do_syscall_64+0xb7/0x580 [ 33.566614][ T1720] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.572654][ T1720] ? path_lookupat.isra.0+0x8d0/0x8d0 [ 33.578015][ T1720] ? __lock_acquire+0x145e/0x3b60 [ 33.583015][ T1720] do_filp_open+0x1a1/0x280 [ 33.587494][ T1720] ? may_open_dev+0xf0/0xf0 [ 33.591974][ T1720] ? __alloc_fd+0x46d/0x600 [ 33.596452][ T1720] ? do_raw_spin_lock+0x11a/0x280 [ 33.601450][ T1720] ? do_raw_spin_unlock+0x50/0x220 [ 33.606548][ T1720] ? _raw_spin_unlock+0x1f/0x30 [ 33.611377][ T1720] ? __alloc_fd+0x46d/0x600 [ 33.615856][ T1720] do_sys_open+0x3c0/0x580 [ 33.620261][ T1720] ? filp_open+0x70/0x70 [ 33.624483][ T1720] ? trace_hardirqs_off_caller+0x55/0x1e0 [ 33.630190][ T1720] do_syscall_64+0xb7/0x580 [ 33.634671][ T1720] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.640541][ T1720] RIP: 0033:0x7f7d2b080120 [ 33.644938][ T1720] Code: 48 8b 15 1b 4d 2b 00 f7 d8 64 89 02 83 c8 ff c3 90 90 90 90 90 90 90 90 90 90 83 3d d5 a4 2b 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 5e 8c 01 00 48 89 04 24 [ 33.664577][ T1720] RSP: 002b:00007ffe1662ea68 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 33.672970][ T1720] RAX: ffffffffffffffda RBX: 00007ffe1662ebc8 RCX: 00007f7d2b080120 [ 33.680934][ T1720] RDX: 00007f7d2b335138 RSI: 0000000000000000 RDI: 00007ffe1662ff1f [ 33.688888][ T1720] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 33.696834][ T1720] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000400884 [ 33.704781][ T1720] R13: 00007ffe1662ebc0 R14: 0000000000000000 R15: 0000000000000000 [ 33.713531][ T1720] Kernel Offset: disabled [ 33.717836][ T1720] Rebooting in 86400 seconds..