[info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 14.246886][ T1663] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 18.117328][ T1698] random: sshd: uninitialized urandom read (32 bytes read) [ 18.131790][ C1] random: crng init done Warning: Permanently added '10.128.0.149' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program [ 763.480530][ T17] usb 6-1: new high-speed USB device number 2 using dummy_hcd [ 763.480538][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 763.495775][ T1736] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 763.500371][ T101] usb 2-1: new high-speed USB device number 2 using dummy_hcd [ 763.503282][ T5] usb 4-1: new high-speed USB device number 2 using dummy_hcd [ 763.518676][ T1734] usb 3-1: new high-speed USB device number 2 using dummy_hcd [ 763.730456][ T17] usb 6-1: Using ep0 maxpacket: 8 [ 763.750396][ T5] usb 4-1: Using ep0 maxpacket: 8 [ 763.755571][ T12] usb 1-1: Using ep0 maxpacket: 8 [ 763.760370][ T1734] usb 3-1: Using ep0 maxpacket: 8 [ 763.760750][ T1736] usb 5-1: Using ep0 maxpacket: 8 [ 763.766150][ T101] usb 2-1: Using ep0 maxpacket: 8 [ 763.776213][ T17] usb 6-1: too many configurations: 227, using maximum allowed: 8 [ 763.790572][ T5] usb 4-1: too many configurations: 227, using maximum allowed: 8 [ 763.810756][ T1734] usb 3-1: too many configurations: 227, using maximum allowed: 8 [ 763.810772][ T12] usb 1-1: too many configurations: 227, using maximum allowed: 8 [ 763.826491][ T1736] usb 5-1: too many configurations: 227, using maximum allowed: 8 [ 763.840535][ T101] usb 2-1: too many configurations: 227, using maximum allowed: 8 [ 763.870484][ T5] usb 4-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 763.880997][ T5] usb 4-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 763.890561][ T17] usb 6-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 763.902406][ T1734] usb 3-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 763.912761][ T17] usb 6-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 763.920451][ T1736] usb 5-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 763.923831][ T1734] usb 3-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 763.934141][ T12] usb 1-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 763.955445][ T1736] usb 5-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 763.960426][ T101] usb 2-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 763.966526][ T12] usb 1-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 763.977359][ T101] usb 2-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 763.990513][ T5] usb 4-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.009184][ T5] usb 4-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.040653][ T17] usb 6-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.051012][ T1734] usb 3-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.060456][ T1736] usb 5-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.061524][ T1734] usb 3-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.071587][ T12] usb 1-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.082761][ T17] usb 6-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.093216][ T1736] usb 5-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.110446][ T101] usb 2-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.115017][ T5] usb 4-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.125368][ T101] usb 2-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.135596][ T12] usb 1-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.157552][ T5] usb 4-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.190520][ T1734] usb 3-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.200876][ T17] usb 6-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.211571][ T1734] usb 3-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.222634][ T17] usb 6-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.230456][ T1736] usb 5-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.244410][ T12] usb 1-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.254719][ T5] usb 4-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.260502][ T101] usb 2-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.265040][ T12] usb 1-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.275936][ T101] usb 2-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.286332][ T1736] usb 5-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.308419][ T5] usb 4-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.320528][ T1734] usb 3-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.330872][ T17] usb 6-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.341425][ T17] usb 6-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.352499][ T1734] usb 3-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.380505][ T101] usb 2-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.390890][ T101] usb 2-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.400497][ T5] usb 4-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.412242][ T12] usb 1-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.422532][ T1736] usb 5-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.432847][ T5] usb 4-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.444187][ T12] usb 1-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.450449][ T17] usb 6-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.455277][ T1736] usb 5-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.465731][ T1734] usb 3-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.486872][ T17] usb 6-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.497939][ T1734] usb 3-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.520537][ T101] usb 2-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.530930][ T101] usb 2-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.570497][ T12] usb 1-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.580874][ T5] usb 4-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.590483][ T17] usb 6-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.591512][ T1736] usb 5-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.601471][ T1734] usb 3-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.611995][ T12] usb 1-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.622237][ T17] usb 6-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.632986][ T5] usb 4-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.633404][ T1736] usb 5-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.644247][ T1734] usb 3-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.677263][ T101] usb 2-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.687621][ T101] usb 2-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.720513][ T5] usb 4-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.731007][ T5] usb 4-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.742326][ T12] usb 1-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.752593][ T1736] usb 5-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.760422][ T17] usb 6-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.763051][ T1736] usb 5-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.773772][ T101] usb 2-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.785568][ T12] usb 1-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.795713][ T1734] usb 3-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.816808][ T17] usb 6-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.827870][ T101] usb 2-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.839060][ T1734] usb 3-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.850623][ T5] usb 4-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.860986][ T5] usb 4-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.872038][ T5] usb 4-1: New USB device found, idVendor=2400, idProduct=4200, bcdDevice=42.ef [ 764.881140][ T5] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 764.900500][ T12] usb 1-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.910436][ T17] usb 6-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.910894][ T1736] usb 5-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.921753][ T101] usb 2-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.942047][ T1734] usb 3-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 764.942113][ T5] cdc_wdm 4-1:118.0: cdc-wdm0: USB WDM device [ 764.958080][ T17] usb 6-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.958533][ T12] usb 1-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.969512][ T17] usb 6-1: New USB device found, idVendor=2400, idProduct=4200, bcdDevice=42.ef [ 764.969526][ T17] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 764.972064][ T1734] usb 3-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.986256][ T1736] usb 5-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 764.989704][ T1734] usb 3-1: New USB device found, idVendor=2400, idProduct=4200, bcdDevice=42.ef [ 764.989720][ T1734] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 765.036786][ T101] usb 2-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 765.047975][ T101] usb 2-1: New USB device found, idVendor=2400, idProduct=4200, bcdDevice=42.ef [ 765.057108][ T101] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 765.072771][ T1736] usb 5-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 765.083324][ T12] usb 1-1: config 118 has an invalid descriptor of length 0, skipping remainder of the config [ 765.093902][ T1736] usb 5-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 765.104971][ T1736] usb 5-1: New USB device found, idVendor=2400, idProduct=4200, bcdDevice=42.ef [ 765.114021][ T1736] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 765.122480][ T17] cdc_wdm 6-1:118.0: cdc-wdm1: USB WDM device [ 765.124764][ T12] usb 1-1: config 118 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 765.139626][ T12] usb 1-1: New USB device found, idVendor=2400, idProduct=4200, bcdDevice=42.ef [ 765.148686][ T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 765.149239][ T101] cdc_wdm 2-1:118.0: cdc-wdm2: USB WDM device [ 765.164577][ T1734] cdc_wdm 3-1:118.0: cdc-wdm3: USB WDM device [ 765.203022][ T1736] cdc_wdm 5-1:118.0: cdc-wdm4: USB WDM device [ 765.211931][ T12] cdc_wdm 1-1:118.0: cdc-wdm5: USB WDM device [ 923.810443][ T23] INFO: task syz-executor193:1725 blocked for more than 143 seconds. [ 923.818616][ T23] Not tainted 5.3.0-rc5+ #27 [ 923.823897][ T23] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 923.832681][ T23] syz-executor193 D28272 1725 1723 0x80004006 [ 923.838996][ T23] Call Trace: [ 923.842357][ T23] ? __schedule+0x703/0x1440 [ 923.846938][ T23] ? __sched_text_start+0x8/0x8 [ 923.851850][ T23] ? prepare_to_wait_event+0x129/0x650 [ 923.857297][ T23] schedule+0x9a/0x250 [ 923.861459][ T23] wdm_flush+0x20c/0x370 [ 923.865706][ T23] ? wdm_poll+0x280/0x280 [ 923.870009][ T23] ? finish_wait+0x260/0x260 [ 923.874645][ T23] ? task_work_add+0x97/0x120 [ 923.879315][ T23] ? wdm_poll+0x280/0x280 [ 923.883736][ T23] filp_close+0xb4/0x160 [ 923.887984][ T23] put_files_struct+0x1d8/0x2e0 [ 923.892860][ T23] exit_files+0x7e/0xa0 [ 923.897008][ T23] do_exit+0x8bc/0x2c00 [ 923.901190][ T23] ? find_held_lock+0x2d/0x110 [ 923.905941][ T23] ? mm_update_next_owner+0x630/0x630 [ 923.911360][ T23] ? __kasan_slab_free+0x130/0x180 [ 923.916471][ T23] ? kmem_cache_free+0xb9/0x380 [ 923.921365][ T23] ? lock_downgrade+0x6e0/0x6e0 [ 923.926204][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 923.931280][ T23] do_group_exit+0x125/0x340 [ 923.935864][ T23] get_signal+0x466/0x23d0 [ 923.940306][ T23] ? debug_check_no_obj_freed+0xc4/0x443 [ 923.946040][ T23] do_signal+0x88/0x14e0 [ 923.950263][ T23] ? lockdep_hardirqs_on+0x379/0x580 [ 923.955591][ T23] ? setup_sigcontext+0x820/0x820 [ 923.960693][ T23] ? putname+0xe1/0x120 [ 923.964831][ T23] ? rcu_read_lock_sched_held+0x113/0x130 [ 923.970576][ T23] ? kmem_cache_free+0x2cd/0x380 [ 923.975541][ T23] ? putname+0xe1/0x120 [ 923.979679][ T23] ? do_sys_open+0x2e7/0x580 [ 923.984307][ T23] ? filp_open+0x70/0x70 [ 923.988539][ T23] ? switch_fpu_return+0x1c2/0x430 [ 923.993678][ T23] exit_to_usermode_loop+0x1a2/0x200 [ 923.998956][ T23] do_syscall_64+0x45f/0x580 [ 924.003565][ T23] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 924.009443][ T23] RIP: 0033:0x401540 [ 924.013364][ T23] Code: 00 00 05 00 00 00 67 00 00 00 00 00 00 00 00 00 00 00 a8 88 60 00 00 00 00 00 05 00 00 00 6c 00 00 00 00 00 00 00 00 00 00 00 88 60 00 00 00 00 00 05 00 00 00 6d 00 00 00 00 00 00 00 00 00 [ 924.033032][ T23] RSP: 002b:00007ffdb922ad68 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 924.041476][ T23] RAX: 0000000000000004 RBX: 0000000000000000 RCX: 0000000000401540 [ 924.049438][ T23] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00007ffdb922ad80 [ 924.057443][ T23] RBP: 00000000006cc018 R08: 0000000000000000 R09: 000000000000000f [ 924.065455][ T23] R10: 0000000000000064 R11: 0000000000000246 R12: 0000000000402560 [ 924.073470][ T23] R13: 00000000004025f0 R14: 0000000000000000 R15: 0000000000000000 [ 924.081496][ T23] INFO: task syz-executor193:1730 blocked for more than 143 seconds. [ 924.089558][ T23] Not tainted 5.3.0-rc5+ #27 [ 924.094681][ T23] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 924.103531][ T23] syz-executor193 D28520 1730 1729 0x80004006 [ 924.109841][ T23] Call Trace: [ 924.113146][ T23] ? __schedule+0x703/0x1440 [ 924.117723][ T23] ? __sched_text_start+0x8/0x8 [ 924.122590][ T23] ? prepare_to_wait_event+0x129/0x650 [ 924.128034][ T23] schedule+0x9a/0x250 [ 924.132119][ T23] wdm_flush+0x20c/0x370 [ 924.136352][ T23] ? wdm_poll+0x280/0x280 [ 924.140782][ T23] ? finish_wait+0x260/0x260 [ 924.145357][ T23] ? task_work_add+0x97/0x120 [ 924.150005][ T23] ? wdm_poll+0x280/0x280 [ 924.154446][ T23] filp_close+0xb4/0x160 [ 924.158691][ T23] put_files_struct+0x1d8/0x2e0 [ 924.163680][ T23] exit_files+0x7e/0xa0 [ 924.167816][ T23] do_exit+0x8bc/0x2c00 [ 924.171982][ T23] ? find_held_lock+0x2d/0x110 [ 924.176770][ T23] ? mm_update_next_owner+0x630/0x630 [ 924.182224][ T23] ? lock_downgrade+0x6e0/0x6e0 [ 924.187067][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 924.192101][ T23] do_group_exit+0x125/0x340 [ 924.196689][ T23] get_signal+0x466/0x23d0 [ 924.201130][ T23] ? kfree+0x287/0x2f0 [ 924.205189][ T23] ? wdm_write+0x1c2/0xd87 [ 924.209575][ T23] do_signal+0x88/0x14e0 [ 924.213834][ T23] ? finish_wait+0x260/0x260 [ 924.218415][ T23] ? lock_downgrade+0x6e0/0x6e0 [ 924.223347][ T23] ? handle_mm_fault+0x1d5/0x900 [ 924.228277][ T23] ? setup_sigcontext+0x820/0x820 [ 924.233339][ T23] ? wdm_probe+0x2d0/0x2d0 [ 924.237745][ T23] ? __vfs_write+0x7e/0x100 [ 924.242261][ T23] ? vfs_write+0x15b/0x5c0 [ 924.246665][ T23] ? ksys_write+0x19f/0x250 [ 924.251180][ T23] ? __ia32_sys_read+0xb0/0xb0 [ 924.255933][ T23] exit_to_usermode_loop+0x1a2/0x200 [ 924.261232][ T23] do_syscall_64+0x45f/0x580 [ 924.265809][ T23] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 924.271714][ T23] RIP: 0033:0x441809 [ 924.275597][ T23] Code: 0a 53 75 67 67 65 73 74 65 64 20 61 63 74 69 6f 6e 3a 20 72 75 6e 20 72 73 79 73 6c 6f 67 64 20 77 69 74 68 20 2d 64 20 2d 6e <20> 6f 70 74 69 6f 6e 73 20 74 6f 20 73 65 65 20 77 68 61 74 20 65 [ 924.295220][ T23] RSP: 002b:00007ffdb922ae18 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 924.303646][ T23] RAX: fffffffffffffe00 RBX: 0000000000000000 RCX: 0000000000441809 [ 924.311627][ T23] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 [ 924.319598][ T23] RBP: 00000000006cc018 R08: 00000000004002c8 R09: 00000000004002c8 [ 924.327651][ T23] R10: 000000000000000f R11: 0000000000000246 R12: 0000000000402560 [ 924.335636][ T23] R13: 00000000004025f0 R14: 0000000000000000 R15: 0000000000000000 [ 924.343698][ T23] INFO: task syz-executor193:1731 blocked for more than 143 seconds. [ 924.351778][ T23] Not tainted 5.3.0-rc5+ #27 [ 924.356861][ T23] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 924.365572][ T23] syz-executor193 D28376 1731 1727 0x80000002 [ 924.371921][ T23] Call Trace: [ 924.375190][ T23] ? __schedule+0x703/0x1440 [ 924.379750][ T23] ? __sched_text_start+0x8/0x8 [ 924.384733][ T23] ? prepare_to_wait_event+0x129/0x650 [ 924.390181][ T23] schedule+0x9a/0x250 [ 924.394294][ T23] wdm_flush+0x20c/0x370 [ 924.398526][ T23] ? wdm_poll+0x280/0x280 [ 924.402881][ T23] ? finish_wait+0x260/0x260 [ 924.407460][ T23] ? task_work_add+0x97/0x120 [ 924.412153][ T23] ? wdm_poll+0x280/0x280 [ 924.416473][ T23] filp_close+0xb4/0x160 [ 924.420735][ T23] put_files_struct+0x1d8/0x2e0 [ 924.425572][ T23] exit_files+0x7e/0xa0 [ 924.429701][ T23] do_exit+0x8bc/0x2c00 [ 924.433878][ T23] ? mm_update_next_owner+0x630/0x630 [ 924.439330][ T23] ? up_read+0x143/0x510 [ 924.443609][ T23] ? down_read_non_owner+0x440/0x440 [ 924.448873][ T23] ? handle_mm_fault+0x30f/0x900 [ 924.454001][ T23] do_group_exit+0x125/0x340 [ 924.458586][ T23] __x64_sys_exit_group+0x3a/0x50 [ 924.463626][ T23] do_syscall_64+0xb7/0x580 [ 924.468129][ T23] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 924.474040][ T23] RIP: 0033:0x440458 [ 924.477919][ T23] Code: 3e 5d 0a 54 6f 20 72 75 6e 20 72 73 79 73 6c 6f 67 64 20 69 6e 20 6e 61 74 69 76 65 20 6d 6f 64 65 2c 20 75 73 65 20 22 72 73 <79> 73 6c 6f 67 64 20 2d 63 35 20 3c 6f 74 68 65 72 20 6f 70 74 69 [ 924.497620][ T23] RSP: 002b:00007ffdb922add8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 924.506056][ T23] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440458 [ 924.514087][ T23] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 924.522088][ T23] RBP: 00000000004c00d0 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 924.530045][ T23] R10: 000000000000000f R11: 0000000000000246 R12: 0000000000000001 [ 924.538038][ T23] R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 [ 924.546073][ T23] INFO: task syz-executor193:1732 blocked for more than 144 seconds. [ 924.554154][ T23] Not tainted 5.3.0-rc5+ #27 [ 924.559234][ T23] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 924.568088][ T23] syz-executor193 D28520 1732 1724 0x80004006 [ 924.574443][ T23] Call Trace: [ 924.577716][ T23] ? __schedule+0x703/0x1440 [ 924.582316][ T23] ? __sched_text_start+0x8/0x8 [ 924.587151][ T23] ? prepare_to_wait_event+0x129/0x650 [ 924.592797][ T23] schedule+0x9a/0x250 [ 924.596863][ T23] wdm_flush+0x20c/0x370 [ 924.601143][ T23] ? wdm_poll+0x280/0x280 [ 924.605461][ T23] ? finish_wait+0x260/0x260 [ 924.610027][ T23] ? task_work_add+0x97/0x120 [ 924.614774][ T23] ? wdm_poll+0x280/0x280 [ 924.619102][ T23] filp_close+0xb4/0x160 [ 924.623360][ T23] put_files_struct+0x1d8/0x2e0 [ 924.628199][ T23] exit_files+0x7e/0xa0 [ 924.632378][ T23] do_exit+0x8bc/0x2c00 [ 924.636524][ T23] ? find_held_lock+0x2d/0x110 [ 924.641304][ T23] ? mm_update_next_owner+0x630/0x630 [ 924.646661][ T23] ? lock_downgrade+0x6e0/0x6e0 [ 924.651534][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 924.656542][ T23] do_group_exit+0x125/0x340 [ 924.661169][ T23] get_signal+0x466/0x23d0 [ 924.665561][ T23] ? kfree+0x287/0x2f0 [ 924.669619][ T23] ? wdm_write+0x1c2/0xd87 [ 924.674085][ T23] do_signal+0x88/0x14e0 [ 924.678320][ T23] ? finish_wait+0x260/0x260 [ 924.682940][ T23] ? lock_downgrade+0x6e0/0x6e0 [ 924.687780][ T23] ? handle_mm_fault+0x1d5/0x900 [ 924.693014][ T23] ? setup_sigcontext+0x820/0x820 [ 924.698037][ T23] ? wdm_probe+0x2d0/0x2d0 [ 924.702500][ T23] ? __vfs_write+0x7e/0x100 [ 924.707006][ T23] ? vfs_write+0x15b/0x5c0 [ 924.711450][ T23] ? ksys_write+0x19f/0x250 [ 924.715936][ T23] ? __ia32_sys_read+0xb0/0xb0 [ 924.720894][ T23] exit_to_usermode_loop+0x1a2/0x200 [ 924.726166][ T23] do_syscall_64+0x45f/0x580 [ 924.730790][ T23] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 924.736676][ T23] RIP: 0033:0x441809 [ 924.740599][ T23] Code: 0a 53 75 67 67 65 73 74 65 64 20 61 63 74 69 6f 6e 3a 20 72 75 6e 20 72 73 79 73 6c 6f 67 64 20 77 69 74 68 20 2d 64 20 2d 6e <20> 6f 70 74 69 6f 6e 73 20 74 6f 20 73 65 65 20 77 68 61 74 20 65 [ 924.760348][ T23] RSP: 002b:00007ffdb922ae18 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 924.768764][ T23] RAX: fffffffffffffe00 RBX: 0000000000000000 RCX: 0000000000441809 [ 924.776780][ T23] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 [ 924.784765][ T23] RBP: 00000000006cc018 R08: 00000000004002c8 R09: 00000000004002c8 [ 924.792756][ T23] R10: 000000000000000f R11: 0000000000000246 R12: 0000000000402560 [ 924.800743][ T23] R13: 00000000004025f0 R14: 0000000000000000 R15: 0000000000000000 [ 924.809138][ T23] INFO: task syz-executor193:1733 blocked for more than 144 seconds. [ 924.817215][ T23] Not tainted 5.3.0-rc5+ #27 [ 924.822405][ T23] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 924.831112][ T23] syz-executor193 D28248 1733 1728 0x80004006 [ 924.837441][ T23] Call Trace: [ 924.840809][ T23] ? __schedule+0x703/0x1440 [ 924.845395][ T23] ? __sched_text_start+0x8/0x8 [ 924.850231][ T23] ? prepare_to_wait_event+0x129/0x650 [ 924.855714][ T23] schedule+0x9a/0x250 [ 924.859773][ T23] wdm_flush+0x20c/0x370 [ 924.864044][ T23] ? wdm_poll+0x280/0x280 [ 924.868362][ T23] ? finish_wait+0x260/0x260 [ 924.872976][ T23] ? task_work_add+0x97/0x120 [ 924.877690][ T23] ? wdm_poll+0x280/0x280 [ 924.882070][ T23] filp_close+0xb4/0x160 [ 924.886293][ T23] put_files_struct+0x1d8/0x2e0 [ 924.891499][ T23] exit_files+0x7e/0xa0 [ 924.895652][ T23] do_exit+0x8bc/0x2c00 [ 924.899792][ T23] ? find_held_lock+0x2d/0x110 [ 924.904615][ T23] ? mm_update_next_owner+0x630/0x630 [ 924.909973][ T23] ? __kasan_slab_free+0x130/0x180 [ 924.915106][ T23] ? kmem_cache_free+0xb9/0x380 [ 924.920031][ T23] ? lock_downgrade+0x6e0/0x6e0 [ 924.924912][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 924.929926][ T23] do_group_exit+0x125/0x340 [ 924.934554][ T23] get_signal+0x466/0x23d0 [ 924.938963][ T23] ? debug_check_no_obj_freed+0xc4/0x443 [ 924.944625][ T23] do_signal+0x88/0x14e0 [ 924.948863][ T23] ? lockdep_hardirqs_on+0x379/0x580 [ 924.954169][ T23] ? setup_sigcontext+0x820/0x820 [ 924.959179][ T23] ? putname+0xe1/0x120 [ 924.963401][ T23] ? rcu_read_lock_sched_held+0x113/0x130 [ 924.969126][ T23] ? kmem_cache_free+0x2cd/0x380 [ 924.974096][ T23] ? putname+0xe1/0x120 [ 924.978239][ T23] ? do_sys_open+0x2e7/0x580 [ 924.982861][ T23] ? filp_open+0x70/0x70 [ 924.987088][ T23] ? switch_fpu_return+0x1c2/0x430 [ 924.992379][ T23] exit_to_usermode_loop+0x1a2/0x200 [ 924.997834][ T23] do_syscall_64+0x45f/0x580 [ 925.002476][ T23] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 925.008411][ T23] RIP: 0033:0x401540 [ 925.012354][ T23] Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 20 01 00 00 00 00 00 00 28 01 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 3b 01 00 00 00 00 00 00 00 00 [ 925.032005][ T23] RSP: 002b:00007ffdb922ad68 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 925.040435][ T23] RAX: 0000000000000004 RBX: 0000000000000000 RCX: 0000000000401540 [ 925.048494][ T23] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00007ffdb922ad80 [ 925.056625][ T23] RBP: 00000000006cc018 R08: 0000000000000000 R09: 000000000000000f [ 925.064659][ T23] R10: 0000000000000064 R11: 0000000000000246 R12: 0000000000402560 [ 925.072708][ T23] R13: 00000000004025f0 R14: 0000000000000000 R15: 0000000000000000 [ 925.080775][ T23] INFO: task syz-executor193:1735 blocked for more than 144 seconds. [ 925.088866][ T23] Not tainted 5.3.0-rc5+ #27 [ 925.094008][ T23] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 925.102694][ T23] syz-executor193 D28520 1735 1726 0x80004006 [ 925.109014][ T23] Call Trace: [ 925.112341][ T23] ? __schedule+0x703/0x1440 [ 925.116924][ T23] ? __sched_text_start+0x8/0x8 [ 925.121804][ T23] ? prepare_to_wait_event+0x129/0x650 [ 925.127251][ T23] schedule+0x9a/0x250 [ 925.131342][ T23] wdm_flush+0x20c/0x370 [ 925.135576][ T23] ? wdm_poll+0x280/0x280 [ 925.139945][ T23] ? finish_wait+0x260/0x260 [ 925.144581][ T23] ? task_work_add+0x97/0x120 [ 925.149256][ T23] ? wdm_poll+0x280/0x280 [ 925.153641][ T23] filp_close+0xb4/0x160 [ 925.157878][ T23] put_files_struct+0x1d8/0x2e0 [ 925.162746][ T23] exit_files+0x7e/0xa0 [ 925.166886][ T23] do_exit+0x8bc/0x2c00 [ 925.171091][ T23] ? find_held_lock+0x2d/0x110 [ 925.175849][ T23] ? mm_update_next_owner+0x630/0x630 [ 925.181235][ T23] ? lock_downgrade+0x6e0/0x6e0 [ 925.186072][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 925.191112][ T23] do_group_exit+0x125/0x340 [ 925.195750][ T23] get_signal+0x466/0x23d0 [ 925.200467][ T23] ? kfree+0x287/0x2f0 [ 925.204525][ T23] ? wdm_write+0x1c2/0xd87 [ 925.208915][ T23] do_signal+0x88/0x14e0 [ 925.213176][ T23] ? finish_wait+0x260/0x260 [ 925.217758][ T23] ? lock_downgrade+0x6e0/0x6e0 [ 925.222633][ T23] ? handle_mm_fault+0x1d5/0x900 [ 925.227567][ T23] ? setup_sigcontext+0x820/0x820 [ 925.232617][ T23] ? wdm_probe+0x2d0/0x2d0 [ 925.237020][ T23] ? __vfs_write+0x7e/0x100 [ 925.241550][ T23] ? vfs_write+0x15b/0x5c0 [ 925.245957][ T23] ? ksys_write+0x19f/0x250 [ 925.250475][ T23] ? __ia32_sys_read+0xb0/0xb0 [ 925.255226][ T23] exit_to_usermode_loop+0x1a2/0x200 [ 925.260525][ T23] do_syscall_64+0x45f/0x580 [ 925.265100][ T23] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 925.271018][ T23] RIP: 0033:0x441809 [ 925.274907][ T23] Code: 0a 53 75 67 67 65 73 74 65 64 20 61 63 74 69 6f 6e 3a 20 72 75 6e 20 72 73 79 73 6c 6f 67 64 20 77 69 74 68 20 2d 64 20 2d 6e <20> 6f 70 74 69 6f 6e 73 20 74 6f 20 73 65 65 20 77 68 61 74 20 65 [ 925.294550][ T23] RSP: 002b:00007ffdb922ae18 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 925.302987][ T23] RAX: fffffffffffffe00 RBX: 0000000000000000 RCX: 0000000000441809 [ 925.310976][ T23] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 [ 925.318984][ T23] RBP: 00000000006cc018 R08: 00000000004002c8 R09: 00000000004002c8 [ 925.327008][ T23] R10: 000000000000000f R11: 0000000000000246 R12: 0000000000402560 [ 925.335053][ T23] R13: 00000000004025f0 R14: 0000000000000000 R15: 0000000000000000 [ 925.343076][ T23] [ 925.343076][ T23] Showing all locks held in the system: [ 925.350926][ T23] 1 lock held by khungtaskd/23: [ 925.355757][ T23] #0: 000000003d417057 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x269 [ 925.365151][ T23] 1 lock held by rsyslogd/1598: [ 925.369998][ T23] #0: 00000000cc6bf080 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xe3/0x100 [ 925.378637][ T23] 2 locks held by getty/1688: [ 925.383315][ T23] #0: 00000000a76be0e8 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 925.392733][ T23] #1: 00000000c85e003f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 925.402320][ T23] 2 locks held by getty/1689: [ 925.406969][ T23] #0: 00000000d96395d6 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 925.416205][ T23] #1: 000000006bbb4516 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 925.425803][ T23] 2 locks held by getty/1690: [ 925.430490][ T23] #0: 000000001f563b2d (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 925.439704][ T23] #1: 000000000c97e07f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 925.449317][ T23] 2 locks held by getty/1691: [ 925.454005][ T23] #0: 0000000058a8e862 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 925.463230][ T23] #1: 00000000d94b7684 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 925.472803][ T23] 2 locks held by getty/1692: [ 925.477454][ T23] #0: 00000000308b86e1 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 925.486669][ T23] #1: 00000000c21e838b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 925.496319][ T23] 2 locks held by getty/1693: [ 925.501034][ T23] #0: 00000000b650a3fd (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 925.510245][ T23] #1: 00000000f7ab1253 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 925.519830][ T23] 2 locks held by getty/1694: [ 925.524534][ T23] #0: 00000000b5228d43 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 925.533769][ T23] #1: 0000000049af1d5f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 925.543679][ T23] [ 925.546533][ T23] ============================================= [ 925.546533][ T23] [ 925.554974][ T23] NMI backtrace for cpu 1 [ 925.559290][ T23] CPU: 1 PID: 23 Comm: khungtaskd Not tainted 5.3.0-rc5+ #27 [ 925.566627][ T23] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 925.576704][ T23] Call Trace: [ 925.580038][ T23] dump_stack+0xca/0x13e [ 925.584256][ T23] ? irq_force_complete_move.cold+0x27/0x47 [ 925.590120][ T23] nmi_cpu_backtrace.cold+0x55/0x96 [ 925.595292][ T23] ? lapic_can_unplug_cpu.cold+0x3f/0x3f [ 925.600915][ T23] nmi_trigger_cpumask_backtrace+0x1b0/0x1c7 [ 925.606874][ T23] watchdog+0x9a4/0xe50 [ 925.611023][ T23] ? reset_hung_task_detector+0x30/0x30 [ 925.616555][ T23] kthread+0x318/0x420 [ 925.620599][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 925.625948][ T23] ret_from_fork+0x24/0x30 [ 925.630394][ T23] Sending NMI from CPU 1 to CPUs 0: [ 925.635674][ C0] NMI backtrace for cpu 0 skipped: idling at default_idle+0x28/0x2e0 [ 925.636600][ T23] Kernel panic - not syncing: hung_task: blocked tasks [ 925.650563][ T23] CPU: 1 PID: 23 Comm: khungtaskd Not tainted 5.3.0-rc5+ #27 [ 925.657909][ T23] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 925.667945][ T23] Call Trace: [ 925.671225][ T23] dump_stack+0xca/0x13e [ 925.675444][ T23] panic+0x2a3/0x6da [ 925.679314][ T23] ? add_taint.cold+0x16/0x16 [ 925.683968][ T23] ? cpumask_next+0x1f/0x30 [ 925.688445][ T23] ? printk_safe_flush+0xd9/0x120 [ 925.693444][ T23] ? watchdog+0x9a4/0xe50 [ 925.697759][ T23] ? nmi_trigger_cpumask_backtrace+0x168/0x1c7 [ 925.703904][ T23] watchdog+0x9b5/0xe50 [ 925.708042][ T23] ? reset_hung_task_detector+0x30/0x30 [ 925.713568][ T23] kthread+0x318/0x420 [ 925.717611][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 925.722956][ T23] ret_from_fork+0x24/0x30 [ 925.727883][ T23] Kernel Offset: disabled [ 925.732198][ T23] Rebooting in 86400 seconds..