[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[[ 31.427670] kauditd_printk_skb: 9 callbacks suppressed 1G[ ok [39[ 31.427681] audit: type=1800 audit(1538323526.259:33): pid=5325 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 ;49m8[?25h[?0c. [....] Starting file context maintaining dae[ 31.459875] audit: type=1800 audit(1538323526.259:34): pid=5325 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 mon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 35.229026] audit: type=1400 audit(1538323530.059:35): avc: denied { map } for pid=5501 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.10.4' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program [ 701.166841] audit: type=1400 audit(1538324195.999:36): avc: denied { map } for pid=5515 comm="syz-executor101" path="/root/syz-executor101752969" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 731.620676] audit: type=1400 audit(1538324226.449:37): avc: denied { map } for pid=5529 comm="sh" path="/bin/dash" dev="sda1" ino=1473 scontext=system_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [ 846.873681] INFO: task syz-executor101:5522 blocked for more than 140 seconds. [ 846.882323] Not tainted 4.19.0-rc5+ #40 [ 846.887108] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 846.895149] syz-executor101 D23752 5522 5521 0x00000004 [ 846.900839] Call Trace: [ 846.903532] __schedule+0x86c/0x1ed0 [ 846.907414] ? set_next_entity+0x30c/0xc40 [ 846.912107] ? __sched_text_start+0x8/0x8 [ 846.916737] ? reweight_task+0x130/0x130 [ 846.920808] ? __lock_acquire+0x7ec/0x4ec0 [ 846.925124] ? graph_lock+0x170/0x170 [ 846.928914] ? print_usage_bug+0xc0/0xc0 [ 846.932959] ? graph_lock+0x170/0x170 [ 846.936834] ? print_usage_bug+0xc0/0xc0 [ 846.940897] ? pick_next_task_fair+0x98e/0x17c0 [ 846.945680] ? print_usage_bug+0xc0/0xc0 [ 846.949731] ? find_held_lock+0x36/0x1c0 [ 846.953873] schedule+0xfe/0x460 [ 846.957233] ? __schedule+0x1ed0/0x1ed0 [ 846.961189] ? lockdep_hardirqs_on+0x421/0x5c0 [ 846.965880] ? trace_hardirqs_on+0xbd/0x310 [ 846.970209] ? kasan_check_read+0x11/0x20 [ 846.974504] ? __rwsem_down_write_failed_common+0x8db/0x1670 [ 846.980313] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 846.985861] ? kasan_check_write+0x14/0x20 [ 846.990609] ? do_raw_spin_lock+0xc1/0x200 [ 846.995526] __rwsem_down_write_failed_common+0xbb9/0x1670 [ 847.001406] ? rwsem_spin_on_owner+0xa30/0xa30 [ 847.006057] ? print_usage_bug+0xc0/0xc0 [ 847.010108] ? print_usage_bug+0xc0/0xc0 [ 847.014251] ? print_usage_bug+0xc0/0xc0 [ 847.018299] ? print_usage_bug+0xc0/0xc0 [ 847.022413] ? mark_held_locks+0x130/0x130 [ 847.026753] ? __lock_acquire+0x7ec/0x4ec0 [ 847.030983] ? graph_lock+0x170/0x170 [ 847.034855] ? __lock_acquire+0x7ec/0x4ec0 [ 847.039106] ? mark_held_locks+0x130/0x130 [ 847.043332] ? find_held_lock+0x36/0x1c0 [ 847.047545] ? ima_match_policy+0x848/0x1560 [ 847.051949] ? lock_downgrade+0x900/0x900 [ 847.056261] ? check_preemption_disabled+0x48/0x200 [ 847.061272] ? graph_lock+0x170/0x170 [ 847.065173] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 847.070962] ? kasan_check_read+0x11/0x20 [ 847.075179] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 847.080446] ? rcu_bh_qs+0xc0/0xc0 [ 847.084052] ? print_usage_bug+0xc0/0xc0 [ 847.088105] ? graph_lock+0x170/0x170 [ 847.091896] ? lock_acquire+0x1ed/0x520 [ 847.095952] ? process_measurement+0xc3e/0x1bf0 [ 847.100612] ? lock_release+0x970/0x970 [ 847.104696] ? arch_local_save_flags+0x40/0x40 [ 847.109279] ? ima_lsm_rule_init+0x1c0/0x1c0 [ 847.113797] rwsem_down_write_failed+0xe/0x10 [ 847.118295] ? rwsem_down_write_failed+0xe/0x10 [ 847.122949] call_rwsem_down_write_failed+0x17/0x30 [ 847.128114] down_write+0xa5/0x130 [ 847.131651] ? process_measurement+0xc3e/0x1bf0 [ 847.136512] ? down_read+0x1d0/0x1d0 [ 847.141339] ? ima_get_action+0x7e/0xa0 [ 847.146541] process_measurement+0xc3e/0x1bf0 [ 847.151134] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 847.156560] ? ima_add_template_entry.cold.4+0x3c/0x3c [ 847.161854] ? dput.part.26+0x26d/0x790 [ 847.165964] ? dquot_get_next_dqblk+0x180/0x180 [ 847.170635] ? shrink_dcache_sb+0x350/0x350 [ 847.175045] ? find_held_lock+0x36/0x1c0 [ 847.179250] ? selinux_task_getsecid+0x1f9/0x3a0 [ 847.184108] ? lock_downgrade+0x900/0x900 [ 847.188270] ? check_preemption_disabled+0x48/0x200 [ 847.193388] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 847.199297] ? kasan_check_read+0x11/0x20 [ 847.203460] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 847.208906] ? rcu_bh_qs+0xc0/0xc0 [ 847.212446] ? selinux_task_getsecid+0x220/0x3a0 [ 847.217305] ? selinux_socket_sock_rcv_skb+0x820/0x820 [ 847.222636] ? ext4_file_read_iter+0x3c0/0x3c0 [ 847.227300] ima_file_check+0xe5/0x130 [ 847.231178] ? process_measurement+0x1bf0/0x1bf0 [ 847.236025] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 847.241229] path_openat+0x134d/0x5160 [ 847.245191] ? rcu_bh_qs+0xc0/0xc0 [ 847.248756] ? unwind_dump+0x190/0x190 [ 847.252644] ? path_lookupat.isra.43+0xc00/0xc00 [ 847.257545] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 847.262558] ? expand_files.part.8+0x571/0x9a0 [ 847.267233] ? __alloc_fd+0x347/0x6e0 [ 847.271026] ? lock_downgrade+0x900/0x900 [ 847.275239] ? getname+0x19/0x20 [ 847.278597] ? kasan_check_read+0x11/0x20 [ 847.282727] ? do_raw_spin_unlock+0xa7/0x2f0 [ 847.287220] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 847.291794] ? __lock_is_held+0xb5/0x140 [ 847.295933] ? _raw_spin_unlock+0x2c/0x50 [ 847.300205] ? __alloc_fd+0x347/0x6e0 [ 847.304890] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 847.310433] do_filp_open+0x255/0x380 [ 847.314324] ? may_open_dev+0x100/0x100 [ 847.318398] ? strncpy_from_user+0x3be/0x510 [ 847.324245] ? digsig_verify+0x1530/0x1530 [ 847.329596] ? get_unused_fd_flags+0x122/0x1a0 [ 847.335696] ? getname_flags+0x26e/0x5a0 [ 847.341109] do_sys_open+0x568/0x700 [ 847.346061] ? filp_open+0x80/0x80 [ 847.350544] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 847.357552] __x64_sys_creat+0x61/0x80 [ 847.362531] do_syscall_64+0x1b9/0x820 [ 847.367442] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 847.372801] ? syscall_return_slowpath+0x5e0/0x5e0 [ 847.377914] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 847.382762] ? trace_hardirqs_on_caller+0x310/0x310 [ 847.388029] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 847.393108] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 847.398748] ? prepare_exit_to_usermode+0x291/0x3b0 [ 847.403846] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 847.408684] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 847.413956] RIP: 0033:0x440ef9 [ 847.417387] Code: 67 00 00 00 00 00 00 00 00 49 6e 76 61 6c 69 64 20 22 24 4d 61 69 6e 4d 73 67 51 75 65 75 65 44 65 71 75 65 75 65 54 69 6d 65 <45> 6e 64 22 2c 20 65 72 72 6f 72 20 25 64 2e 20 49 67 6e 6f 72 65 [ 847.437112] RSP: 002b:00007ffe712a3838 EFLAGS: 00000213 ORIG_RAX: 0000000000000055 [ 847.444923] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440ef9 [ 847.452225] RDX: 0000000000440ef9 RSI: 0000000000000000 RDI: 0000000020000000 [ 847.459590] RBP: 0000000000000000 R08: 00000000004002c8 R09: 00000000004002c8 [ 847.466933] R10: 0000000001e42880 R11: 0000000000000213 R12: 0000000000401d90 [ 847.474273] R13: 0000000000401e20 R14: 0000000000000000 R15: 0000000000000000 [ 847.481546] INFO: task syz-executor101:5524 blocked for more than 140 seconds. [ 847.489837] Not tainted 4.19.0-rc5+ #40 [ 847.494448] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 847.502769] syz-executor101 D23736 5524 5517 0x00000004 [ 847.509180] Call Trace: [ 847.512115] __schedule+0x86c/0x1ed0 [ 847.515956] ? __pagevec_lru_add_fn+0xd75/0x2a30 [ 847.520706] ? __sched_text_start+0x8/0x8 [ 847.524931] ? print_usage_bug+0xc0/0xc0 [ 847.528983] ? __update_load_avg_se+0xb90/0xb90 [ 847.533729] ? graph_lock+0x170/0x170 [ 847.537534] ? print_usage_bug+0xc0/0xc0 [ 847.541575] ? graph_lock+0x170/0x170 [ 847.545463] ? graph_lock+0x170/0x170 [ 847.549253] ? update_load_avg+0x387/0x2470 [ 847.553655] ? print_usage_bug+0xc0/0xc0 [ 847.557776] ? find_held_lock+0x36/0x1c0 [ 847.561837] schedule+0xfe/0x460 [ 847.565305] ? __schedule+0x1ed0/0x1ed0 [ 847.569287] ? lockdep_hardirqs_on+0x421/0x5c0 [ 847.573949] ? trace_hardirqs_on+0xbd/0x310 [ 847.578267] ? kasan_check_read+0x11/0x20 [ 847.582414] ? __rwsem_down_write_failed_common+0x8db/0x1670 [ 847.588310] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 847.593831] ? kasan_check_write+0x14/0x20 [ 847.598111] ? do_raw_spin_lock+0xc1/0x200 [ 847.602338] __rwsem_down_write_failed_common+0xbb9/0x1670 [ 847.608060] ? rwsem_spin_on_owner+0xa30/0xa30 [ 847.612633] ? print_usage_bug+0xc0/0xc0 [ 847.616763] ? print_usage_bug+0xc0/0xc0 [ 847.620822] ? print_usage_bug+0xc0/0xc0 [ 847.624988] ? print_usage_bug+0xc0/0xc0 [ 847.629250] ? mark_held_locks+0x130/0x130 [ 847.634656] ? __lock_acquire+0x7ec/0x4ec0 [ 847.640211] ? graph_lock+0x170/0x170 [ 847.645198] ? has_ns_capability_noaudit+0x1c8/0x340 [ 847.651593] ? lock_downgrade+0x900/0x900 [ 847.657155] ? find_held_lock+0x36/0x1c0 [ 847.662325] ? ima_match_policy+0x848/0x1560 [ 847.668133] ? lock_downgrade+0x900/0x900 [ 847.673382] ? check_preemption_disabled+0x48/0x200 [ 847.679662] ? graph_lock+0x170/0x170 [ 847.684525] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 847.690880] ? kasan_check_read+0x11/0x20 [ 847.695128] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 847.700401] ? rcu_bh_qs+0xc0/0xc0 [ 847.704038] ? print_usage_bug+0xc0/0xc0 [ 847.708097] ? lock_acquire+0x1ed/0x520 [ 847.712056] ? process_measurement+0x190f/0x1bf0 [ 847.716891] ? lock_release+0x970/0x970 [ 847.721035] ? arch_local_save_flags+0x40/0x40 [ 847.725733] ? ima_lsm_rule_init+0x1c0/0x1c0 [ 847.730147] rwsem_down_write_failed+0xe/0x10 [ 847.734738] ? rwsem_down_write_failed+0xe/0x10 [ 847.739403] call_rwsem_down_write_failed+0x17/0x30 [ 847.744502] down_write+0xa5/0x130 [ 847.748079] ? process_measurement+0x190f/0x1bf0 [ 847.752827] ? down_read+0x1d0/0x1d0 [ 847.756652] ? ima_get_action+0x7e/0xa0 [ 847.760624] process_measurement+0x190f/0x1bf0 [ 847.765304] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 847.770581] ? ima_add_template_entry.cold.4+0x3c/0x3c [ 847.775947] ? dput.part.26+0x26d/0x790 [ 847.779923] ? dquot_get_next_dqblk+0x180/0x180 [ 847.784748] ? shrink_dcache_sb+0x350/0x350 [ 847.789075] ? find_held_lock+0x36/0x1c0 [ 847.793124] ? selinux_task_getsecid+0x1f9/0x3a0 [ 847.797982] ? lock_downgrade+0x900/0x900 [ 847.802129] ? check_preemption_disabled+0x48/0x200 [ 847.807260] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 847.813048] ? kasan_check_read+0x11/0x20 [ 847.817281] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 847.823398] ? rcu_bh_qs+0xc0/0xc0 [ 847.827655] ? selinux_task_getsecid+0x220/0x3a0 [ 847.832410] ? selinux_socket_sock_rcv_skb+0x820/0x820 [ 847.837797] ? ext4_file_read_iter+0x3c0/0x3c0 [ 847.842773] ima_file_check+0xe5/0x130 [ 847.846781] ? process_measurement+0x1bf0/0x1bf0 [ 847.851534] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 847.856874] path_openat+0x134d/0x5160 [ 847.861200] ? rcu_bh_qs+0xc0/0xc0 [ 847.864853] ? unwind_dump+0x190/0x190 [ 847.868746] ? path_lookupat.isra.43+0xc00/0xc00 [ 847.873607] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 847.879451] ? expand_files.part.8+0x571/0x9a0 [ 847.885215] ? __alloc_fd+0x347/0x6e0 [ 847.889013] ? lock_downgrade+0x900/0x900 [ 847.893147] ? getname+0x19/0x20 [ 847.896877] ? kasan_check_read+0x11/0x20 [ 847.901024] ? do_raw_spin_unlock+0xa7/0x2f0 [ 847.905601] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 847.910182] ? __lock_is_held+0xb5/0x140 [ 847.914414] ? _raw_spin_unlock+0x2c/0x50 [ 847.919740] ? __alloc_fd+0x347/0x6e0 [ 847.924617] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 847.931009] do_filp_open+0x255/0x380 [ 847.935017] ? may_open_dev+0x100/0x100 [ 847.938990] ? strncpy_from_user+0x3be/0x510 [ 847.943388] ? digsig_verify+0x1530/0x1530 [ 847.947726] ? get_unused_fd_flags+0x122/0x1a0 [ 847.952355] ? getname_flags+0x26e/0x5a0 [ 847.956527] do_sys_open+0x568/0x700 [ 847.960240] ? filp_open+0x80/0x80 [ 847.963863] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 847.970106] __x64_sys_openat+0x9d/0x100 [ 847.975242] do_syscall_64+0x1b9/0x820 [ 847.979171] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 847.984639] ? syscall_return_slowpath+0x5e0/0x5e0 [ 847.989560] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 847.994480] ? trace_hardirqs_on_caller+0x310/0x310 [ 847.999851] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 848.004975] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 848.010504] ? prepare_exit_to_usermode+0x291/0x3b0 [ 848.016362] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 848.021727] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 848.027003] RIP: 0033:0x440ef9 [ 848.030191] Code: 67 00 00 00 00 00 00 00 00 49 6e 76 61 6c 69 64 20 22 24 4d 61 69 6e 4d 73 67 51 75 65 75 65 44 65 71 75 65 75 65 54 69 6d 65 <45> 6e 64 22 2c 20 65 72 72 6f 72 20 25 64 2e 20 49 67 6e 6f 72 65 [ 848.053492] RSP: 002b:00007ffe712a3838 EFLAGS: 00000207 ORIG_RAX: 0000000000000101 [ 848.061379] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440ef9 [ 848.068801] RDX: 000000000000275a RSI: 0000000020000080 RDI: 00000000ffffff9c [ 848.076205] RBP: 0000000000000000 R08: 0000000001e42880 R09: 00000000004002c8 [ 848.083557] R10: 0000000000000000 R11: 0000000000000207 R12: 0000000000401d90 [ 848.090820] R13: 0000000000401e20 R14: 0000000000000000 R15: 0000000000000000 [ 848.098175] INFO: task syz-executor101:5525 blocked for more than 140 seconds. [ 848.105598] Not tainted 4.19.0-rc5+ #40 [ 848.110084] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 848.118288] syz-executor101 D22824 5525 5520 0x00000004 [ 848.124003] Call Trace: [ 848.126589] __schedule+0x86c/0x1ed0 [ 848.130289] ? __pagevec_lru_add_fn+0xd75/0x2a30 [ 848.135166] ? __sched_text_start+0x8/0x8 [ 848.139311] ? print_usage_bug+0xc0/0xc0 [ 848.143358] ? attach_entity_load_avg+0x860/0x860 [ 848.148426] ? graph_lock+0x170/0x170 [ 848.152282] ? print_usage_bug+0xc0/0xc0 [ 848.156440] ? graph_lock+0x170/0x170 [ 848.160239] ? graph_lock+0x170/0x170 [ 848.165134] ? update_load_avg+0x387/0x2470 [ 848.170600] ? print_usage_bug+0xc0/0xc0 [ 848.175245] ? find_held_lock+0x36/0x1c0 [ 848.179316] schedule+0xfe/0x460 [ 848.182676] ? __schedule+0x1ed0/0x1ed0 [ 848.186751] ? lockdep_hardirqs_on+0x421/0x5c0 [ 848.191333] ? trace_hardirqs_on+0xbd/0x310 [ 848.195759] ? kasan_check_read+0x11/0x20 [ 848.199903] ? __rwsem_down_write_failed_common+0x8db/0x1670 [ 848.205804] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 848.211254] ? kasan_check_write+0x14/0x20 [ 848.215607] ? do_raw_spin_lock+0xc1/0x200 [ 848.219852] __rwsem_down_write_failed_common+0xbb9/0x1670 [ 848.225573] ? rwsem_spin_on_owner+0xa30/0xa30 [ 848.230148] ? print_usage_bug+0xc0/0xc0 [ 848.235043] ? print_usage_bug+0xc0/0xc0 [ 848.239143] ? print_usage_bug+0xc0/0xc0 [ 848.243196] ? print_usage_bug+0xc0/0xc0 [ 848.247393] ? mark_held_locks+0x130/0x130 [ 848.251625] ? __lock_acquire+0x7ec/0x4ec0 [ 848.255935] ? graph_lock+0x170/0x170 [ 848.260096] ? has_ns_capability_noaudit+0x1c8/0x340 [ 848.266618] ? lock_downgrade+0x900/0x900 [ 848.271653] ? find_held_lock+0x36/0x1c0 [ 848.275892] ? ima_match_policy+0x848/0x1560 [ 848.280299] ? lock_downgrade+0x900/0x900 [ 848.284549] ? check_preemption_disabled+0x48/0x200 [ 848.289560] ? graph_lock+0x170/0x170 [ 848.294393] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 848.300190] ? kasan_check_read+0x11/0x20 [ 848.304415] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 848.309684] ? rcu_bh_qs+0xc0/0xc0 [ 848.313208] ? print_usage_bug+0xc0/0xc0 [ 848.317373] ? lock_acquire+0x1ed/0x520 [ 848.321341] ? process_measurement+0x190f/0x1bf0 [ 848.326292] ? lock_release+0x970/0x970 [ 848.330263] ? arch_local_save_flags+0x40/0x40 [ 848.334931] ? ima_lsm_rule_init+0x1c0/0x1c0 [ 848.339439] rwsem_down_write_failed+0xe/0x10 [ 848.344049] ? rwsem_down_write_failed+0xe/0x10 [ 848.349494] call_rwsem_down_write_failed+0x17/0x30 [ 848.355107] down_write+0xa5/0x130 [ 848.358644] ? process_measurement+0x190f/0x1bf0 [ 848.363386] ? down_read+0x1d0/0x1d0 [ 848.367237] ? ima_get_action+0x7e/0xa0 [ 848.371387] process_measurement+0x190f/0x1bf0 [ 848.376049] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 848.381332] ? ima_add_template_entry.cold.4+0x3c/0x3c [ 848.386771] ? dput.part.26+0x26d/0x790 [ 848.391058] ? dquot_get_next_dqblk+0x180/0x180 [ 848.397188] ? shrink_dcache_sb+0x350/0x350 [ 848.402618] ? find_held_lock+0x36/0x1c0 [ 848.406812] ? selinux_task_getsecid+0x1f9/0x3a0 [ 848.411563] ? lock_downgrade+0x900/0x900 [ 848.415841] ? check_preemption_disabled+0x48/0x200 [ 848.421290] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 848.427211] ? kasan_check_read+0x11/0x20 [ 848.431355] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 848.436819] ? rcu_bh_qs+0xc0/0xc0 [ 848.440364] ? selinux_task_getsecid+0x220/0x3a0 [ 848.445215] ? selinux_socket_sock_rcv_skb+0x820/0x820 [ 848.450494] ? ext4_file_read_iter+0x3c0/0x3c0 [ 848.455237] ima_file_check+0xe5/0x130 [ 848.459121] ? process_measurement+0x1bf0/0x1bf0 [ 848.463971] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 848.469159] path_openat+0x134d/0x5160 [ 848.473032] ? rcu_bh_qs+0xc0/0xc0 [ 848.476665] ? unwind_dump+0x190/0x190 [ 848.480575] ? path_lookupat.isra.43+0xc00/0xc00 [ 848.485915] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 848.491004] ? expand_files.part.8+0x571/0x9a0 [ 848.495758] ? __alloc_fd+0x347/0x6e0 [ 848.499553] ? lock_downgrade+0x900/0x900 [ 848.503783] ? getname+0x19/0x20 [ 848.507143] ? kasan_check_read+0x11/0x20 [ 848.511279] ? do_raw_spin_unlock+0xa7/0x2f0 [ 848.515799] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 848.520373] ? __lock_is_held+0xb5/0x140 [ 848.524564] ? _raw_spin_unlock+0x2c/0x50 [ 848.528708] ? __alloc_fd+0x347/0x6e0 [ 848.532576] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 848.538274] do_filp_open+0x255/0x380 [ 848.542571] ? may_open_dev+0x100/0x100 [ 848.547817] ? strncpy_from_user+0x3be/0x510 [ 848.552233] ? digsig_verify+0x1530/0x1530 [ 848.556600] ? get_unused_fd_flags+0x122/0x1a0 [ 848.561184] ? getname_flags+0x26e/0x5a0 [ 848.565473] do_sys_open+0x568/0x700 [ 848.569240] ? filp_open+0x80/0x80 [ 848.572779] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 848.578523] __x64_sys_openat+0x9d/0x100 [ 848.582825] do_syscall_64+0x1b9/0x820 [ 848.586881] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 848.592298] ? syscall_return_slowpath+0x5e0/0x5e0 [ 848.598653] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 848.604774] ? trace_hardirqs_on_caller+0x310/0x310 [ 848.609790] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 848.615022] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 848.620556] ? prepare_exit_to_usermode+0x291/0x3b0 [ 848.625687] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 848.630529] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 848.635898] RIP: 0033:0x440ef9 [ 848.639091] Code: 67 00 00 00 00 00 00 00 00 49 6e 76 61 6c 69 64 20 22 24 4d 61 69 6e 4d 73 67 51 75 65 75 65 44 65 71 75 65 75 65 54 69 6d 65 <45> 6e 64 22 2c 20 65 72 72 6f 72 20 25 64 2e 20 49 67 6e 6f 72 65 [ 848.658168] RSP: 002b:00007ffe712a3838 EFLAGS: 00000207 ORIG_RAX: 0000000000000101 [ 848.666153] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440ef9 [ 848.673916] RDX: 000000000000275a RSI: 0000000020000080 RDI: 00000000ffffff9c [ 848.681181] RBP: 0000000000000000 R08: 0000000001e42880 R09: 00000000004002c8 [ 848.688684] R10: 0000000000000000 R11: 0000000000000207 R12: 0000000000401d90 [ 848.696087] R13: 0000000000401e20 R14: 0000000000000000 R15: 0000000000000000 [ 848.703465] INFO: task syz-executor101:5526 blocked for more than 140 seconds. [ 848.712364] Not tainted 4.19.0-rc5+ #40 [ 848.717488] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 848.725647] syz-executor101 D24024 5526 5518 0x00000004 [ 848.731276] Call Trace: [ 848.734000] __schedule+0x86c/0x1ed0 [ 848.737713] ? __pagevec_lru_add_fn+0xd75/0x2a30 [ 848.742462] ? __sched_text_start+0x8/0x8 [ 848.747649] ? print_usage_bug+0xc0/0xc0 [ 848.751953] ? graph_lock+0x170/0x170 [ 848.755920] ? print_usage_bug+0xc0/0xc0 [ 848.759980] ? graph_lock+0x170/0x170 [ 848.764059] ? graph_lock+0x170/0x170 [ 848.767895] ? update_load_avg+0x387/0x2470 [ 848.772226] ? print_usage_bug+0xc0/0xc0 [ 848.776549] ? find_held_lock+0x36/0x1c0 [ 848.780646] schedule+0xfe/0x460 [ 848.784208] ? __schedule+0x1ed0/0x1ed0 [ 848.788203] ? lockdep_hardirqs_on+0x421/0x5c0 [ 848.792802] ? trace_hardirqs_on+0xbd/0x310 [ 848.797889] ? kasan_check_read+0x11/0x20 [ 848.802066] ? __rwsem_down_write_failed_common+0x8db/0x1670 [ 848.808062] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 848.813691] ? kasan_check_write+0x14/0x20 [ 848.818037] ? do_raw_spin_lock+0xc1/0x200 [ 848.822292] __rwsem_down_write_failed_common+0xbb9/0x1670 [ 848.828143] ? rwsem_spin_on_owner+0xa30/0xa30 [ 848.832747] ? print_usage_bug+0xc0/0xc0 [ 848.837013] ? print_usage_bug+0xc0/0xc0 [ 848.841096] ? print_usage_bug+0xc0/0xc0 [ 848.845370] ? print_usage_bug+0xc0/0xc0 [ 848.849469] ? mark_held_locks+0x130/0x130 [ 848.853901] ? __lock_acquire+0x7ec/0x4ec0 [ 848.858162] ? graph_lock+0x170/0x170 [ 848.861986] ? has_ns_capability_noaudit+0x1c8/0x340 [ 848.867299] ? lock_downgrade+0x900/0x900 [ 848.871470] ? find_held_lock+0x36/0x1c0 [ 848.876066] ? ima_match_policy+0x848/0x1560 [ 848.880499] ? lock_downgrade+0x900/0x900 [ 848.884850] ? check_preemption_disabled+0x48/0x200 [ 848.889886] ? graph_lock+0x170/0x170 [ 848.893877] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 848.899954] ? kasan_check_read+0x11/0x20 [ 848.904278] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 848.909867] ? rcu_bh_qs+0xc0/0xc0 [ 848.913418] ? print_usage_bug+0xc0/0xc0 [ 848.918228] ? lock_acquire+0x1ed/0x520 [ 848.922222] ? process_measurement+0x190f/0x1bf0 [ 848.927165] ? lock_release+0x970/0x970 [ 848.931162] ? arch_local_save_flags+0x40/0x40 [ 848.935967] ? ima_lsm_rule_init+0x1c0/0x1c0 [ 848.940414] rwsem_down_write_failed+0xe/0x10 [ 848.945081] ? rwsem_down_write_failed+0xe/0x10 [ 848.949773] call_rwsem_down_write_failed+0x17/0x30 [ 848.955004] down_write+0xa5/0x130 [ 848.958567] ? process_measurement+0x190f/0x1bf0 [ 848.963335] ? down_read+0x1d0/0x1d0 [ 848.967236] ? ima_get_action+0x7e/0xa0 [ 848.971583] process_measurement+0x190f/0x1bf0 [ 848.976899] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 848.982215] ? ima_add_template_entry.cold.4+0x3c/0x3c [ 848.987680] ? dput.part.26+0x26d/0x790 [ 848.991677] ? dquot_get_next_dqblk+0x180/0x180 [ 848.996518] ? shrink_dcache_sb+0x350/0x350 [ 849.000876] ? find_held_lock+0x36/0x1c0 [ 849.005290] ? selinux_task_getsecid+0x1f9/0x3a0 [ 849.010416] ? lock_downgrade+0x900/0x900 [ 849.014735] ? check_preemption_disabled+0x48/0x200 [ 849.019801] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 849.025795] ? kasan_check_read+0x11/0x20 [ 849.029973] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 849.035427] ? rcu_bh_qs+0xc0/0xc0 [ 849.039005] ? selinux_task_getsecid+0x220/0x3a0 [ 849.044107] ? selinux_socket_sock_rcv_skb+0x820/0x820 [ 849.049758] ? ext4_file_read_iter+0x3c0/0x3c0 [ 849.054545] ima_file_check+0xe5/0x130 [ 849.058460] ? process_measurement+0x1bf0/0x1bf0 [ 849.063225] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 849.068703] path_openat+0x134d/0x5160 [ 849.072794] ? rcu_bh_qs+0xc0/0xc0 [ 849.076508] ? unwind_dump+0x190/0x190 [ 849.080430] ? path_lookupat.isra.43+0xc00/0xc00 [ 849.085712] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 849.090839] ? expand_files.part.8+0x571/0x9a0 [ 849.095611] ? __alloc_fd+0x347/0x6e0 [ 849.099439] ? lock_downgrade+0x900/0x900 [ 849.103771] ? getname+0x19/0x20 [ 849.107190] ? kasan_check_read+0x11/0x20 [ 849.111349] ? do_raw_spin_unlock+0xa7/0x2f0 [ 849.115982] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 849.120583] ? __lock_is_held+0xb5/0x140 [ 849.124859] ? _raw_spin_unlock+0x2c/0x50 [ 849.129077] ? __alloc_fd+0x347/0x6e0 [ 849.133652] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 849.140622] do_filp_open+0x255/0x380 [ 849.145472] ? may_open_dev+0x100/0x100 [ 849.149469] ? strncpy_from_user+0x3be/0x510 [ 849.154059] ? digsig_verify+0x1530/0x1530 [ 849.158319] ? get_unused_fd_flags+0x122/0x1a0 [ 849.162918] ? getname_flags+0x26e/0x5a0 [ 849.167183] do_sys_open+0x568/0x700 [ 849.170922] ? filp_open+0x80/0x80 [ 849.174634] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 849.180112] __x64_sys_openat+0x9d/0x100 [ 849.184348] do_syscall_64+0x1b9/0x820 [ 849.188255] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 849.193852] ? syscall_return_slowpath+0x5e0/0x5e0 [ 849.198808] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 849.203860] ? trace_hardirqs_on_caller+0x310/0x310 [ 849.208907] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 849.214113] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 849.219808] ? prepare_exit_to_usermode+0x291/0x3b0 [ 849.225023] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 849.229896] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 849.235272] RIP: 0033:0x440ef9 [ 849.238485] Code: 67 00 00 00 00 00 00 00 00 49 6e 76 61 6c 69 64 20 22 24 4d 61 69 6e 4d 73 67 51 75 65 75 65 44 65 71 75 65 75 65 54 69 6d 65 <45> 6e 64 22 2c 20 65 72 72 6f 72 20 25 64 2e 20 49 67 6e 6f 72 65 [ 849.257596] RSP: 002b:00007ffe712a3838 EFLAGS: 00000207 ORIG_RAX: 0000000000000101 [ 849.265475] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440ef9 [ 849.272764] RDX: 000000000000275a RSI: 0000000020000080 RDI: 00000000ffffff9c [ 849.280225] RBP: 0000000000000000 R08: 0000000001e42880 R09: 00000000004002c8 [ 849.287657] R10: 0000000000000000 R11: 0000000000000207 R12: 0000000000401d90 [ 849.295094] R13: 0000000000401e20 R14: 0000000000000000 R15: 0000000000000000 [ 849.302403] INFO: task syz-executor101:5527 blocked for more than 140 seconds. [ 849.309962] Not tainted 4.19.0-rc5+ #40 [ 849.314614] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 849.322595] syz-executor101 D22664 5527 5516 0x00000004 [ 849.328405] Call Trace: [ 849.331022] __schedule+0x86c/0x1ed0 [ 849.334931] ? __sched_text_start+0x8/0x8 [ 849.339103] ? rwsem_spin_on_owner+0x264/0xa30 [ 849.343888] ? graph_lock+0x170/0x170 [ 849.347711] ? lock_downgrade+0x900/0x900 [ 849.351870] ? print_usage_bug+0xc0/0xc0 [ 849.356127] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 849.361946] ? kasan_check_read+0x11/0x20 [ 849.366281] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 849.371578] ? rcu_bh_qs+0xc0/0xc0 [ 849.375291] ? find_held_lock+0x36/0x1c0 [ 849.379383] schedule+0xfe/0x460 [ 849.382764] ? __schedule+0x1ed0/0x1ed0 [ 849.386940] ? lockdep_hardirqs_on+0x421/0x5c0 [ 849.391542] ? trace_hardirqs_on+0xbd/0x310 [ 849.396047] ? kasan_check_read+0x11/0x20 [ 849.400215] ? __rwsem_down_write_failed_common+0x8db/0x1670 [ 849.406193] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 849.411682] ? kasan_check_write+0x14/0x20 [ 849.416170] ? do_raw_spin_lock+0xc1/0x200 [ 849.420441] __rwsem_down_write_failed_common+0xbb9/0x1670 [ 849.426251] ? rwsem_spin_on_owner+0xa30/0xa30 [ 849.430853] ? print_usage_bug+0xc0/0xc0 [ 849.435172] ? print_usage_bug+0xc0/0xc0 [ 849.439251] ? print_usage_bug+0xc0/0xc0 [ 849.443322] ? print_usage_bug+0xc0/0xc0 [ 849.447589] ? mark_held_locks+0x130/0x130 [ 849.451846] ? __lock_acquire+0x7ec/0x4ec0 [ 849.456255] ? graph_lock+0x170/0x170 [ 849.460084] ? has_ns_capability_noaudit+0x1c8/0x340 [ 849.465361] ? lock_downgrade+0x900/0x900 [ 849.469532] ? find_held_lock+0x36/0x1c0 [ 849.473763] ? ima_match_policy+0x848/0x1560 [ 849.478211] ? lock_downgrade+0x900/0x900 [ 849.482366] ? check_preemption_disabled+0x48/0x200 [ 849.487585] ? graph_lock+0x170/0x170 [ 849.491407] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 849.497427] ? kasan_check_read+0x11/0x20 [ 849.501595] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 849.507042] ? rcu_bh_qs+0xc0/0xc0 [ 849.510603] ? print_usage_bug+0xc0/0xc0 [ 849.514867] ? lock_acquire+0x1ed/0x520 [ 849.518862] ? process_measurement+0x190f/0x1bf0 [ 849.523801] ? lock_release+0x970/0x970 [ 849.527819] ? arch_local_save_flags+0x40/0x40 [ 849.532413] ? ima_lsm_rule_init+0x1c0/0x1c0 [ 849.537021] rwsem_down_write_failed+0xe/0x10 [ 849.541540] ? rwsem_down_write_failed+0xe/0x10 [ 849.546382] call_rwsem_down_write_failed+0x17/0x30 [ 849.551425] down_write+0xa5/0x130 [ 849.555155] ? process_measurement+0x190f/0x1bf0 [ 849.559938] ? down_read+0x1d0/0x1d0 [ 849.563841] ? ima_get_action+0x7e/0xa0 [ 849.567845] process_measurement+0x190f/0x1bf0 [ 849.572437] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 849.577922] ? ima_add_template_entry.cold.4+0x3c/0x3c [ 849.583220] ? dput.part.26+0x26d/0x790 [ 849.587369] ? dquot_get_next_dqblk+0x180/0x180 [ 849.592058] ? shrink_dcache_sb+0x350/0x350 [ 849.596562] ? find_held_lock+0x36/0x1c0 [ 849.600653] ? selinux_task_getsecid+0x1f9/0x3a0 [ 849.605578] ? lock_downgrade+0x900/0x900 [ 849.609748] ? check_preemption_disabled+0x48/0x200 [ 849.614960] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 849.620773] ? kasan_check_read+0x11/0x20 [ 849.625144] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 849.630441] ? rcu_bh_qs+0xc0/0xc0 [ 849.634156] ? selinux_task_getsecid+0x220/0x3a0 [ 849.638935] ? selinux_socket_sock_rcv_skb+0x820/0x820 [ 849.644387] ? ext4_file_read_iter+0x3c0/0x3c0 [ 849.649000] ima_file_check+0xe5/0x130 [ 849.652899] ? process_measurement+0x1bf0/0x1bf0 [ 849.657854] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 849.663077] path_openat+0x134d/0x5160 [ 849.667139] ? rcu_bh_qs+0xc0/0xc0 [ 849.670695] ? unwind_dump+0x190/0x190 [ 849.674864] ? path_lookupat.isra.43+0xc00/0xc00 [ 849.679645] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 849.684861] ? expand_files.part.8+0x571/0x9a0 [ 849.689480] ? __alloc_fd+0x347/0x6e0 [ 849.693293] ? lock_downgrade+0x900/0x900 [ 849.697641] ? getname+0x19/0x20 [ 849.701038] ? kasan_check_read+0x11/0x20 [ 849.705410] ? do_raw_spin_unlock+0xa7/0x2f0 [ 849.709842] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 849.714596] ? __lock_is_held+0xb5/0x140 [ 849.718686] ? _raw_spin_unlock+0x2c/0x50 [ 849.722848] ? __alloc_fd+0x347/0x6e0 [ 849.726853] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 849.732423] do_filp_open+0x255/0x380 [ 849.736397] ? may_open_dev+0x100/0x100 [ 849.740391] ? strncpy_from_user+0x3be/0x510 [ 849.744993] ? digsig_verify+0x1530/0x1530 [ 849.749257] ? get_unused_fd_flags+0x122/0x1a0 [ 849.754040] ? getname_flags+0x26e/0x5a0 [ 849.758133] do_sys_open+0x568/0x700 [ 849.761860] ? filp_open+0x80/0x80 [ 849.765604] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 849.771079] __x64_sys_openat+0x9d/0x100 [ 849.775325] do_syscall_64+0x1b9/0x820 [ 849.779236] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 849.784827] ? syscall_return_slowpath+0x5e0/0x5e0 [ 849.789779] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 849.794849] ? trace_hardirqs_on_caller+0x310/0x310 [ 849.800381] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 849.805596] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 849.811156] ? prepare_exit_to_usermode+0x291/0x3b0 [ 849.816377] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 849.821266] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 849.826688] RIP: 0033:0x440ef9 [ 849.829900] Code: 67 00 00 00 00 00 00 00 00 49 6e 76 61 6c 69 64 20 22 24 4d 61 69 6e 4d 73 67 51 75 65 75 65 44 65 71 75 65 75 65 54 69 6d 65 <45> 6e 64 22 2c 20 65 72 72 6f 72 20 25 64 2e 20 49 67 6e 6f 72 65 [ 849.849082] RSP: 002b:00007ffe712a3838 EFLAGS: 00000207 ORIG_RAX: 0000000000000101 [ 849.856987] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440ef9 [ 849.864440] RDX: 000000000000275a RSI: 0000000020000080 RDI: 00000000ffffff9c [ 849.871728] RBP: 0000000000000000 R08: 0000000001e42880 R09: 00000000004002c8 [ 849.879272] R10: 0000000000000000 R11: 0000000000000207 R12: 0000000000401d90 [ 849.886798] R13: 0000000000401e20 R14: 0000000000000000 R15: 0000000000000000 [ 849.894303] [ 849.894303] Showing all locks held in the system: [ 849.900647] 1 lock held by khungtaskd/982: [ 849.905074] #0: 000000001116c4dd (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 [ 849.913926] 3 locks held by rs:main Q:Reg/5361: [ 849.918602] #0: 0000000044c0c517 (&rq->lock){-.-.}, at: __schedule+0x236/0x1ed0 [ 849.926374] #1: 000000000bec9fcc (sb_writers#4){.+.+}, at: vfs_write+0x42a/0x560 [ 849.934222] #2: 000000004be84093 (&sb->s_type->i_mutex_key#9){+.+.}, at: ext4_file_write_iter+0x2a1/0x1420 [ 849.944337] 1 lock held by rsyslogd/5364: [ 849.948492] #0: 00000000a8830431 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 [ 849.956709] 2 locks held by getty/5485: [ 849.960693] #0: 00000000de1e6136 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 849.969171] #1: 00000000600ee548 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 849.978427] 2 locks held by getty/5486: [ 849.982417] #0: 00000000b3285b25 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 849.990999] #1: 000000001c3ae4b7 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 850.000094] 2 locks held by getty/5487: [ 850.004228] #0: 000000004c7225f2 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 850.012519] #1: 00000000da2e4cc7 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 850.021642] 2 locks held by getty/5488: [ 850.025804] #0: 00000000297a93f9 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 850.034312] #1: 0000000066f4404f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 850.043212] 2 locks held by getty/5489: [ 850.047385] #0: 00000000dd58e666 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 850.055860] #1: 00000000e2fa745f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 850.064948] 2 locks held by getty/5490: [ 850.068929] #0: 00000000a6cae2fb (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 850.077413] #1: 0000000048d03f73 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 850.086516] 2 locks held by getty/5491: [ 850.090512] #0: 00000000093a54ec (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 850.099086] #1: 00000000dc6b27f8 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 850.108290] 2 locks held by syz-executor101/5522: [ 850.113163] #0: 000000000bec9fcc (sb_writers#4){.+.+}, at: mnt_want_write+0x3f/0xc0 [ 850.121388] #1: 000000008a4b9094 (&sb->s_type->i_mutex_key#9){+.+.}, at: process_measurement+0xc3e/0x1bf0 [ 850.131479] 6 locks held by syz-executor101/5523: [ 850.136498] 2 locks held by syz-executor101/5524: [ 850.141350] #0: 000000000bec9fcc (sb_writers#4){.+.+}, at: mnt_want_write+0x3f/0xc0 [ 850.149535] #1: 00000000eae730c5 (&sb->s_type->i_mutex_key#9){+.+.}, at: process_measurement+0x190f/0x1bf0 [ 850.159683] 2 locks held by syz-executor101/5525: [ 850.164693] #0: 000000000bec9fcc (sb_writers#4){.+.+}, at: mnt_want_write+0x3f/0xc0 [ 850.172648] #1: 00000000eae730c5 (&sb->s_type->i_mutex_key#9){+.+.}, at: process_measurement+0x190f/0x1bf0 [ 850.182831] 2 locks held by syz-executor101/5526: [ 850.187848] #0: 000000000bec9fcc (sb_writers#4){.+.+}, at: mnt_want_write+0x3f/0xc0 [ 850.195994] #1: 00000000eae730c5 (&sb->s_type->i_mutex_key#9){+.+.}, at: process_measurement+0x190f/0x1bf0 [ 850.206120] 2 locks held by syz-executor101/5527: [ 850.210982] #0: 000000000bec9fcc (sb_writers#4){.+.+}, at: mnt_want_write+0x3f/0xc0 [ 850.219191] #1: 00000000eae730c5 (&sb->s_type->i_mutex_key#9){+.+.}, at: process_measurement+0x190f/0x1bf0 [ 850.229363] [ 850.231005] ============================================= [ 850.231005] [ 850.238239] NMI backtrace for cpu 0 [ 850.241886] CPU: 0 PID: 982 Comm: khungtaskd Not tainted 4.19.0-rc5+ #40 [ 850.248730] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 850.258098] Call Trace: [ 850.260769] dump_stack+0x1c4/0x2b4 [ 850.264428] ? dump_stack_print_info.cold.2+0x52/0x52 [ 850.269642] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 850.275212] nmi_cpu_backtrace.cold.3+0x63/0xa2 [ 850.279950] ? lapic_can_unplug_cpu.cold.27+0x3f/0x3f [ 850.285156] nmi_trigger_cpumask_backtrace+0x1b3/0x1ed [ 850.290449] arch_trigger_cpumask_backtrace+0x14/0x20 [ 850.295652] watchdog+0xb3e/0x1050 [ 850.299218] ? reset_hung_task_detector+0xd0/0xd0 [ 850.304150] ? __kthread_parkme+0xce/0x1a0 [ 850.308410] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 850.313531] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 850.318651] ? lockdep_hardirqs_on+0x421/0x5c0 [ 850.323241] ? trace_hardirqs_on+0xbd/0x310 [ 850.327569] ? kasan_check_read+0x11/0x20 [ 850.331723] ? __kthread_parkme+0xce/0x1a0 [ 850.335969] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 850.341430] ? kasan_check_write+0x14/0x20 [ 850.345676] ? do_raw_spin_lock+0xc1/0x200 [ 850.349925] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 850.355037] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 850.360583] ? __kthread_parkme+0xfb/0x1a0 [ 850.365007] kthread+0x35a/0x420 [ 850.368380] ? reset_hung_task_detector+0xd0/0xd0 [ 850.373226] ? kthread_bind+0x40/0x40 [ 850.377037] ret_from_fork+0x3a/0x50 [ 850.380880] Sending NMI from CPU 0 to CPUs 1: [ 850.386943] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.217 msecs [ 850.387435] NMI backtrace for cpu 1 [ 850.387443] CPU: 1 PID: 5523 Comm: syz-executor101 Not tainted 4.19.0-rc5+ #40 [ 850.387451] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 850.387456] RIP: 0010:__sanitizer_cov_trace_pc+0x1/0x50 [ 850.387470] Code: dd 28 00 00 00 4d 39 d0 72 1b 49 83 c1 01 4a 89 7c 10 e0 4a 89 74 10 e8 4a 89 54 10 f0 4a 89 4c d8 20 4c 89 08 5d c3 66 90 55 <48> 89 e5 65 48 8b 04 25 40 ee 01 00 65 8b 15 3c 38 83 7e 81 e2 00 [ 850.387475] RSP: 0018:ffff8801bd427108 EFLAGS: 00000282 [ 850.387485] RAX: 0000000000000000 RBX: ffff8801bab4f8a8 RCX: ffffffff82110c43 [ 850.387492] RDX: 1ffff10037569f11 RSI: ffffffff821103d3 RDI: ffff8801bab4f888 [ 850.387498] RBP: ffff8801bd427140 R08: ffff8801c4472340 R09: 1ffffffff1273955 [ 850.387505] R10: ffffed003b5e4732 R11: ffff8801daf23993 R12: 0000000000000000 [ 850.387511] R13: 0000000093734bb2 R14: 0000000000000000 R15: dffffc0000000000 [ 850.387518] FS: 0000000001e42880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 850.387524] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 850.387530] CR2: ffffffffff600400 CR3: 00000001cc615000 CR4: 00000000001406e0 [ 850.387534] Call Trace: [ 850.387538] ? ext4_ext_drop_refs+0x63/0xf0 [ 850.387543] ext4_find_extent+0xdc/0x9b0 [ 850.387548] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 850.387552] ? ext4_ext_rm_idx+0xa10/0xab0 [ 850.387558] mext_check_coverage.constprop.13+0x2b0/0x510 [ 850.387563] ? mext_page_mkuptodate+0x12b0/0x12b0 [ 850.387567] ext4_move_extents+0x2784/0x3c20 [ 850.387573] ? ext4_double_up_write_data_sem+0x30/0x30 [ 850.387577] ? save_stack+0xa9/0xd0 [ 850.387581] ? save_stack+0x43/0xd0 [ 850.387586] ? __kasan_slab_free+0x102/0x150 [ 850.387590] ? kasan_slab_free+0xe/0x10 [ 850.387594] ? kmem_cache_free+0x83/0x290 [ 850.387599] ? print_usage_bug+0xc0/0xc0 [ 850.387603] ? ext4_fallocate+0xa33/0x2300 [ 850.387608] ? vfs_fallocate+0x4b4/0x940 [ 850.387612] ? ksys_fallocate+0x56/0x90 [ 850.387617] ? __lock_acquire+0x7ec/0x4ec0 [ 850.387621] ? do_raw_spin_unlock+0xa7/0x2f0 [ 850.387626] ? trace_hardirqs_on+0x310/0x310 [ 850.387630] ? kasan_check_write+0x14/0x20 [ 850.387635] ? graph_lock+0x170/0x170 [ 850.387639] ? print_usage_bug+0xc0/0xc0 [ 850.387643] ? print_usage_bug+0xc0/0xc0 [ 850.387648] ? graph_lock+0x170/0x170 [ 850.387653] ? check_preemption_disabled+0x48/0x200 [ 850.387658] ? check_preemption_disabled+0x48/0x200 [ 850.387662] ? __lock_is_held+0xb5/0x140 [ 850.387667] ? rcu_read_lock_sched_held+0x108/0x120 [ 850.387672] ? preempt_count_add+0x7d/0x160 [ 850.387677] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 850.387683] ? __mnt_want_write_file+0xa2/0xc0 [ 850.387687] ext4_ioctl+0x3154/0x4210 [ 850.387692] ? ext4_ioctl_group_add+0x560/0x560 [ 850.387698] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 850.387702] ? kasan_check_read+0x11/0x20 [ 850.387707] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 850.387711] ? rcu_bh_qs+0xc0/0xc0 [ 850.387717] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 850.387722] ? avc_has_extended_perms+0xab2/0x15a0 [ 850.387726] ? avc_ss_reset+0x190/0x190 [ 850.387731] ? find_held_lock+0x36/0x1c0 [ 850.387735] ? dput.part.26+0x241/0x790 [ 850.387740] ? kasan_check_read+0x11/0x20 [ 850.387744] ? ___might_sleep+0x1ed/0x300 [ 850.387748] ? rcu_bh_qs+0xc0/0xc0 [ 850.387753] ? arch_local_save_flags+0x40/0x40 [ 850.387758] ? kasan_check_write+0x14/0x20 [ 850.387762] ? do_raw_spin_lock+0xc1/0x200 [ 850.387767] ? ext4_ioctl_group_add+0x560/0x560 [ 850.387771] do_vfs_ioctl+0x1de/0x1720 [ 850.387776] ? ioctl_preallocate+0x300/0x300 [ 850.387781] ? selinux_file_mprotect+0x620/0x620 [ 850.387786] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 850.387790] ? do_syscall_64+0x9a/0x820 [ 850.387796] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 850.387800] ? security_file_ioctl+0x94/0xc0 [ 850.387804] ksys_ioctl+0xa9/0xd0 [ 850.387808] __x64_sys_ioctl+0x73/0xb0 [ 850.387821] do_syscall_64+0x1b9/0x820 [ 850.387826] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 850.387831] ? syscall_return_slowpath+0x5e0/0x5e0 [ 850.387836] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 850.387841] ? trace_hardirqs_on_caller+0x310/0x310 [ 850.387846] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 850.387852] ? prepare_exit_to_usermode+0x291/0x3b0 [ 850.387857] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 850.387862] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 850.387866] RIP: 0033:0x440ef9 [ 850.387880] Code: e8 ac e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 0b 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 850.387885] RSP: 002b:00007ffe712a3838 EFLAGS: 00000217 ORIG_RAX: 0000000000000010 [ 850.387896] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440ef9 [ 850.387903] RDX: 0000000020000040 RSI: 00000000c028660f RDI: 0000000000000003 [ 850.387909] RBP: 0000000000000000 R08: 00000000004002c8 R09: 00000000004002c8 [ 850.387916] R10: 00000000004002c8 R11: 0000000000000217 R12: 0000000000401d90 [ 850.387922] R13: 0000000000401e20 R14: 0000000000000000 R15: 0000000000000000 [ 850.389712] Kernel panic - not syncing: hung_task: blocked tasks [ 850.881001] CPU: 0 PID: 982 Comm: khungtaskd Not tainted 4.19.0-rc5+ #40 [ 850.887845] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 850.897217] Call Trace: [ 850.899828] dump_stack+0x1c4/0x2b4 [ 850.903471] ? dump_stack_print_info.cold.2+0x52/0x52 [ 850.909089] panic+0x238/0x4e7 [ 850.912293] ? add_taint.cold.5+0x16/0x16 [ 850.916463] ? nmi_trigger_cpumask_backtrace+0x16a/0x1ed [ 850.922438] ? nmi_trigger_cpumask_backtrace+0x1c4/0x1ed [ 850.927897] ? nmi_trigger_cpumask_backtrace+0x173/0x1ed [ 850.933355] ? nmi_trigger_cpumask_backtrace+0x16a/0x1ed [ 850.938835] watchdog+0xb4f/0x1050 [ 850.942402] ? reset_hung_task_detector+0xd0/0xd0 [ 850.947260] ? __kthread_parkme+0xce/0x1a0 [ 850.951509] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 850.956621] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 850.961730] ? lockdep_hardirqs_on+0x421/0x5c0 [ 850.966320] ? trace_hardirqs_on+0xbd/0x310 [ 850.970647] ? kasan_check_read+0x11/0x20 [ 850.974808] ? __kthread_parkme+0xce/0x1a0 [ 850.979056] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 850.984517] ? kasan_check_write+0x14/0x20 [ 850.988758] ? do_raw_spin_lock+0xc1/0x200 [ 850.993009] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 850.998118] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 851.003659] ? __kthread_parkme+0xfb/0x1a0 [ 851.007904] kthread+0x35a/0x420 [ 851.011281] ? reset_hung_task_detector+0xd0/0xd0 [ 851.016132] ? kthread_bind+0x40/0x40 [ 851.019944] ret_from_fork+0x3a/0x50 [ 851.024859] Kernel Offset: disabled [ 851.028488] Rebooting in 86400 seconds..