[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?2[ 31.532459] audit: type=1800 audit(1538312801.538:33): pid=5344 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 5l[?1c7[[[ 31.555878] audit: type=1800 audit(1538312801.538:34): pid=5344 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 32m ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 35.088115] audit: type=1400 audit(1538312805.088:35): avc: denied { map } for pid=5524 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 [ 651.155732] audit: type=1400 audit(1538313421.158:36): avc: denied { map } for pid=5534 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 Warning: Permanently added '10.128.0.24' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program [ 676.935916] audit: type=1400 audit(1538313446.938:37): avc: denied { map } for pid=5541 comm="syz-executor212" path="/root/syz-executor212822736" 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 [ 826.249622] INFO: task syz-executor212:5548 blocked for more than 140 seconds. [ 826.257184] Not tainted 4.19.0-rc5+ #40 [ 826.262131] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 826.270240] syz-executor212 D19712 5548 5545 0x00000004 [ 826.275894] Call Trace: [ 826.278499] __schedule+0x86c/0x1ed0 [ 826.282372] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 826.288195] ? __sched_text_start+0x8/0x8 [ 826.292485] ? rcu_bh_qs+0xc0/0xc0 [ 826.296045] ? unwind_dump+0x190/0x190 [ 826.300116] ? graph_lock+0x170/0x170 [ 826.303933] ? print_usage_bug+0xc0/0xc0 [ 826.308005] ? kernel_text_address+0x79/0xf0 [ 826.312569] ? __kernel_text_address+0xd/0x40 [ 826.317106] ? unwind_get_return_address+0x61/0xa0 [ 826.322184] ? find_held_lock+0x36/0x1c0 [ 826.326267] schedule+0xfe/0x460 [ 826.329830] ? __schedule+0x1ed0/0x1ed0 [ 826.333820] ? lockdep_hardirqs_on+0x421/0x5c0 [ 826.338414] ? trace_hardirqs_on+0xbd/0x310 [ 826.342914] ? kasan_check_read+0x11/0x20 [ 826.347077] ? __rwsem_down_write_failed_common+0x8db/0x1670 [ 826.353012] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 826.358487] ? kasan_check_write+0x14/0x20 [ 826.362892] ? do_raw_spin_lock+0xc1/0x200 [ 826.367147] __rwsem_down_write_failed_common+0xbb9/0x1670 [ 826.372928] ? rwsem_spin_on_owner+0xa30/0xa30 [ 826.377526] ? print_usage_bug+0xc0/0xc0 [ 826.381742] ? print_usage_bug+0xc0/0xc0 [ 826.385841] ? mark_held_locks+0x130/0x130 [ 826.390214] ? rcu_read_lock_sched_held+0x108/0x120 [ 826.395254] ? __lock_acquire+0x7ec/0x4ec0 [ 826.399638] ? __lock_acquire+0x7ec/0x4ec0 [ 826.403885] ? __lock_acquire+0x7ec/0x4ec0 [ 826.408134] ? print_usage_bug+0xc0/0xc0 [ 826.412363] ? mark_held_locks+0x130/0x130 [ 826.416620] ? ext4_expand_extra_isize+0x5b0/0x5b0 [ 826.421686] ? graph_lock+0x170/0x170 [ 826.425507] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 826.431187] ? graph_lock+0x170/0x170 [ 826.435007] ? __lock_acquire+0x7ec/0x4ec0 [ 826.439275] ? lock_acquire+0x1ed/0x520 [ 826.443400] ? ext4_fallocate+0x921/0x2300 [ 826.447654] ? lock_release+0x970/0x970 [ 826.451777] ? arch_local_save_flags+0x40/0x40 [ 826.456370] ? graph_lock+0x170/0x170 [ 826.460325] rwsem_down_write_failed+0xe/0x10 [ 826.464833] ? rwsem_down_write_failed+0xe/0x10 [ 826.469661] call_rwsem_down_write_failed+0x17/0x30 [ 826.474697] down_write+0xa5/0x130 [ 826.478242] ? ext4_fallocate+0x921/0x2300 [ 826.482634] ? down_read+0x1d0/0x1d0 [ 826.486374] ext4_fallocate+0x921/0x2300 [ 826.490604] ? graph_lock+0x170/0x170 [ 826.494421] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 826.500351] ? kasan_check_read+0x11/0x20 [ 826.504539] ? ext4_insert_range+0x1410/0x1410 [ 826.509143] ? graph_lock+0x170/0x170 [ 826.513109] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 826.518690] ? check_preemption_disabled+0x48/0x200 [ 826.523855] ? check_preemption_disabled+0x48/0x200 [ 826.528896] ? __lock_is_held+0xb5/0x140 [ 826.533115] ? rcu_read_lock_sched_held+0x108/0x120 [ 826.538148] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 826.543835] ? __sb_start_write+0x1b2/0x370 [ 826.548174] ? ext4_insert_range+0x1410/0x1410 [ 826.552911] vfs_fallocate+0x4b4/0x940 [ 826.556822] ksys_fallocate+0x56/0x90 [ 826.560851] __x64_sys_fallocate+0x97/0xf0 [ 826.565107] do_syscall_64+0x1b9/0x820 [ 826.569000] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 826.574614] ? syscall_return_slowpath+0x5e0/0x5e0 [ 826.579697] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 826.584561] ? trace_hardirqs_on_caller+0x310/0x310 [ 826.589763] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 826.594795] ? prepare_exit_to_usermode+0x291/0x3b0 [ 826.599969] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 826.604837] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 826.610182] RIP: 0033:0x440ef9 [ 826.613392] 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 [ 826.632675] RSP: 002b:00007ffd82484778 EFLAGS: 00000217 ORIG_RAX: 000000000000011d [ 826.640554] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440ef9 [ 826.647846] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 826.655248] RBP: 0000000000000000 R08: 00000000004002c8 R09: 00000000004002c8 [ 826.662643] R10: 0000000000010001 R11: 0000000000000217 R12: 0000000000401d90 [ 826.670071] R13: 0000000000401e20 R14: 0000000000000000 R15: 0000000000000000 [ 826.677374] INFO: task syz-executor212:5550 blocked for more than 140 seconds. [ 826.684864] Not tainted 4.19.0-rc5+ #40 [ 826.689360] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 826.697454] syz-executor212 D23736 5550 5543 0x00000004 [ 826.703228] Call Trace: [ 826.705839] __schedule+0x86c/0x1ed0 [ 826.709690] ? __pagevec_lru_add_fn+0xd75/0x2a30 [ 826.714488] ? __sched_text_start+0x8/0x8 [ 826.718665] ? print_usage_bug+0xc0/0xc0 [ 826.722892] ? update_cfs_rq_load_avg.part.64+0x2e0/0x2e0 [ 826.728444] ? graph_lock+0x170/0x170 [ 826.732382] ? print_usage_bug+0xc0/0xc0 [ 826.736459] ? graph_lock+0x170/0x170 [ 826.740396] ? graph_lock+0x170/0x170 [ 826.744213] ? update_load_avg+0x140e/0x2470 [ 826.748635] ? print_usage_bug+0xc0/0xc0 [ 826.752853] ? find_held_lock+0x36/0x1c0 [ 826.756942] schedule+0xfe/0x460 [ 826.760449] ? __schedule+0x1ed0/0x1ed0 [ 826.764443] ? lockdep_hardirqs_on+0x421/0x5c0 [ 826.769041] ? trace_hardirqs_on+0xbd/0x310 [ 826.773552] ? kasan_check_read+0x11/0x20 [ 826.777719] ? __rwsem_down_write_failed_common+0x8db/0x1670 [ 826.783654] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 826.789125] ? kasan_check_write+0x14/0x20 [ 826.793500] ? do_raw_spin_lock+0xc1/0x200 [ 826.797761] __rwsem_down_write_failed_common+0xbb9/0x1670 [ 826.803530] ? rwsem_spin_on_owner+0xa30/0xa30 [ 826.808122] ? print_usage_bug+0xc0/0xc0 [ 826.812318] ? print_usage_bug+0xc0/0xc0 [ 826.816390] ? print_usage_bug+0xc0/0xc0 [ 826.820644] ? print_usage_bug+0xc0/0xc0 [ 826.824749] ? mark_held_locks+0x130/0x130 [ 826.828995] ? __lock_acquire+0x7ec/0x4ec0 [ 826.833395] ? graph_lock+0x170/0x170 [ 826.837228] ? has_ns_capability_noaudit+0x1c8/0x340 [ 826.842481] ? lock_downgrade+0x900/0x900 [ 826.846647] ? find_held_lock+0x36/0x1c0 [ 826.850884] ? ima_match_policy+0x848/0x1560 [ 826.855304] ? lock_downgrade+0x900/0x900 [ 826.859591] ? check_preemption_disabled+0x48/0x200 [ 826.864642] ? graph_lock+0x170/0x170 [ 826.868452] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 826.874400] ? kasan_check_read+0x11/0x20 [ 826.878565] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 826.883992] ? rcu_bh_qs+0xc0/0xc0 [ 826.887552] ? print_usage_bug+0xc0/0xc0 [ 826.891781] ? lock_acquire+0x1ed/0x520 [ 826.895773] ? process_measurement+0x190f/0x1bf0 [ 826.900707] ? lock_release+0x970/0x970 [ 826.904696] ? arch_local_save_flags+0x40/0x40 [ 826.909282] ? ima_lsm_rule_init+0x1c0/0x1c0 [ 826.913850] rwsem_down_write_failed+0xe/0x10 [ 826.918361] ? rwsem_down_write_failed+0xe/0x10 [ 826.923174] call_rwsem_down_write_failed+0x17/0x30 [ 826.928213] down_write+0xa5/0x130 [ 826.931895] ? process_measurement+0x190f/0x1bf0 [ 826.936669] ? down_read+0x1d0/0x1d0 [ 826.940527] ? ima_get_action+0x7e/0xa0 [ 826.944527] process_measurement+0x190f/0x1bf0 [ 826.949118] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 826.954564] ? ima_add_template_entry.cold.4+0x3c/0x3c [ 826.959983] ? dput.part.26+0x26d/0x790 [ 826.963982] ? dquot_get_next_dqblk+0x180/0x180 [ 826.968654] ? shrink_dcache_sb+0x350/0x350 [ 826.973157] ? find_held_lock+0x36/0x1c0 [ 826.977242] ? selinux_task_getsecid+0x1f9/0x3a0 [ 826.982172] ? lock_downgrade+0x900/0x900 [ 826.986340] ? check_preemption_disabled+0x48/0x200 [ 826.991499] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 826.997306] ? kasan_check_read+0x11/0x20 [ 827.001595] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 827.006892] ? rcu_bh_qs+0xc0/0xc0 [ 827.010582] ? selinux_task_getsecid+0x220/0x3a0 [ 827.015383] ? selinux_socket_sock_rcv_skb+0x820/0x820 [ 827.020815] ? ext4_file_read_iter+0x3c0/0x3c0 [ 827.025424] ima_file_check+0xe5/0x130 [ 827.029321] ? process_measurement+0x1bf0/0x1bf0 [ 827.034249] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 827.039606] path_openat+0x134d/0x5160 [ 827.043514] ? rcu_bh_qs+0xc0/0xc0 [ 827.047073] ? unwind_dump+0x190/0x190 [ 827.051178] ? path_lookupat.isra.43+0xc00/0xc00 [ 827.055952] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 827.061133] ? expand_files.part.8+0x571/0x9a0 [ 827.065753] ? __alloc_fd+0x347/0x6e0 [ 827.069727] ? lock_downgrade+0x900/0x900 [ 827.073882] ? getname+0x19/0x20 [ 827.077258] ? kasan_check_read+0x11/0x20 [ 827.081556] ? do_raw_spin_unlock+0xa7/0x2f0 [ 827.085981] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 827.090697] ? __lock_is_held+0xb5/0x140 [ 827.094786] ? _raw_spin_unlock+0x2c/0x50 [ 827.098941] ? __alloc_fd+0x347/0x6e0 [ 827.102924] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 827.108490] do_filp_open+0x255/0x380 [ 827.112441] ? may_open_dev+0x100/0x100 [ 827.116431] ? strncpy_from_user+0x3be/0x510 [ 827.120990] ? digsig_verify+0x1530/0x1530 [ 827.125250] ? get_unused_fd_flags+0x122/0x1a0 [ 827.130007] ? getname_flags+0x26e/0x5a0 [ 827.134097] do_sys_open+0x568/0x700 [ 827.137821] ? filp_open+0x80/0x80 [ 827.141510] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 827.146981] __x64_sys_openat+0x9d/0x100 [ 827.151265] do_syscall_64+0x1b9/0x820 [ 827.155179] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 827.160711] ? syscall_return_slowpath+0x5e0/0x5e0 [ 827.165666] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 827.170694] ? trace_hardirqs_on_caller+0x310/0x310 [ 827.175728] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 827.180889] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 827.186440] ? prepare_exit_to_usermode+0x291/0x3b0 [ 827.191600] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 827.196486] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 827.201830] RIP: 0033:0x440ef9 [ 827.205054] 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 [ 827.224099] RSP: 002b:00007ffd82484778 EFLAGS: 00000207 ORIG_RAX: 0000000000000101 [ 827.231942] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440ef9 [ 827.239223] RDX: 000000000000275a RSI: 0000000020000080 RDI: 00000000ffffff9c [ 827.246636] RBP: 0000000000000000 R08: 00000000008c3880 R09: 00000000004002c8 [ 827.254054] R10: 0000000000000000 R11: 0000000000000207 R12: 0000000000401d90 [ 827.261449] R13: 0000000000401e20 R14: 0000000000000000 R15: 0000000000000000 [ 827.268752] INFO: task syz-executor212:5551 blocked for more than 140 seconds. [ 827.276282] Not tainted 4.19.0-rc5+ #40 [ 827.280905] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 827.288878] syz-executor212 D23736 5551 5546 0x00000004 [ 827.294653] Call Trace: [ 827.297257] __schedule+0x86c/0x1ed0 [ 827.301115] ? __pagevec_lru_add_fn+0xd75/0x2a30 [ 827.305893] ? __sched_text_start+0x8/0x8 [ 827.310203] ? print_usage_bug+0xc0/0xc0 [ 827.314282] ? attach_entity_load_avg+0x860/0x860 [ 827.319136] ? graph_lock+0x170/0x170 [ 827.323093] ? print_usage_bug+0xc0/0xc0 [ 827.327165] ? graph_lock+0x170/0x170 [ 827.331109] ? graph_lock+0x170/0x170 [ 827.334924] ? update_load_avg+0x387/0x2470 [ 827.339256] ? print_usage_bug+0xc0/0xc0 [ 827.343474] ? find_held_lock+0x36/0x1c0 [ 827.347572] schedule+0xfe/0x460 [ 827.351087] ? __schedule+0x1ed0/0x1ed0 [ 827.355080] ? lockdep_hardirqs_on+0x421/0x5c0 [ 827.359802] ? trace_hardirqs_on+0xbd/0x310 [ 827.364149] ? kasan_check_read+0x11/0x20 [ 827.368312] ? __rwsem_down_write_failed_common+0x8db/0x1670 [ 827.374268] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 827.379854] ? kasan_check_write+0x14/0x20 [ 827.384106] ? do_raw_spin_lock+0xc1/0x200 [ 827.388355] __rwsem_down_write_failed_common+0xbb9/0x1670 [ 827.394147] ? rwsem_spin_on_owner+0xa30/0xa30 [ 827.398762] ? print_usage_bug+0xc0/0xc0 [ 827.402960] ? print_usage_bug+0xc0/0xc0 [ 827.407039] ? print_usage_bug+0xc0/0xc0 [ 827.411257] ? print_usage_bug+0xc0/0xc0 [ 827.415340] ? mark_held_locks+0x130/0x130 [ 827.419760] ? __lock_acquire+0x7ec/0x4ec0 [ 827.424022] ? graph_lock+0x170/0x170 [ 827.427846] ? has_ns_capability_noaudit+0x1c8/0x340 [ 827.433110] ? lock_downgrade+0x900/0x900 [ 827.437277] ? find_held_lock+0x36/0x1c0 [ 827.441982] ? ima_match_policy+0x848/0x1560 [ 827.446424] ? lock_downgrade+0x900/0x900 [ 827.450728] ? check_preemption_disabled+0x48/0x200 [ 827.455761] ? graph_lock+0x170/0x170 [ 827.459708] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 827.465761] ? kasan_check_read+0x11/0x20 [ 827.470207] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 827.475510] ? rcu_bh_qs+0xc0/0xc0 [ 827.479067] ? print_usage_bug+0xc0/0xc0 [ 827.483332] ? lock_acquire+0x1ed/0x520 [ 827.487330] ? process_measurement+0x190f/0x1bf0 [ 827.492260] ? lock_release+0x970/0x970 [ 827.496258] ? arch_local_save_flags+0x40/0x40 [ 827.501035] ? ima_lsm_rule_init+0x1c0/0x1c0 [ 827.505467] rwsem_down_write_failed+0xe/0x10 [ 827.510134] ? rwsem_down_write_failed+0xe/0x10 [ 827.514848] call_rwsem_down_write_failed+0x17/0x30 [ 827.520540] down_write+0xa5/0x130 [ 827.524098] ? process_measurement+0x190f/0x1bf0 [ 827.528866] ? down_read+0x1d0/0x1d0 [ 827.533203] ? ima_get_action+0x7e/0xa0 [ 827.537202] process_measurement+0x190f/0x1bf0 [ 827.541964] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 827.547272] ? ima_add_template_entry.cold.4+0x3c/0x3c [ 827.552726] ? dput.part.26+0x26d/0x790 [ 827.556758] ? dquot_get_next_dqblk+0x180/0x180 [ 827.561608] ? shrink_dcache_sb+0x350/0x350 [ 827.565968] ? find_held_lock+0x36/0x1c0 [ 827.570210] ? selinux_task_getsecid+0x1f9/0x3a0 [ 827.574987] ? lock_downgrade+0x900/0x900 [ 827.579144] ? check_preemption_disabled+0x48/0x200 [ 827.584345] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 827.590301] ? kasan_check_read+0x11/0x20 [ 827.594470] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 827.599920] ? rcu_bh_qs+0xc0/0xc0 [ 827.603491] ? selinux_task_getsecid+0x220/0x3a0 [ 827.608258] ? selinux_socket_sock_rcv_skb+0x820/0x820 [ 827.613822] ? ext4_file_read_iter+0x3c0/0x3c0 [ 827.618432] ima_file_check+0xe5/0x130 [ 827.622505] ? process_measurement+0x1bf0/0x1bf0 [ 827.627292] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 827.632673] path_openat+0x134d/0x5160 [ 827.636579] ? rcu_bh_qs+0xc0/0xc0 [ 827.640285] ? unwind_dump+0x190/0x190 [ 827.644220] ? path_lookupat.isra.43+0xc00/0xc00 [ 827.648991] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 827.654218] ? expand_files.part.8+0x571/0x9a0 [ 827.658857] ? __alloc_fd+0x347/0x6e0 [ 827.662831] ? lock_downgrade+0x900/0x900 [ 827.666996] ? getname+0x19/0x20 [ 827.670534] ? kasan_check_read+0x11/0x20 [ 827.674714] ? do_raw_spin_unlock+0xa7/0x2f0 [ 827.679160] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 827.683960] ? __lock_is_held+0xb5/0x140 [ 827.688066] ? _raw_spin_unlock+0x2c/0x50 [ 827.692404] ? __alloc_fd+0x347/0x6e0 [ 827.696233] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 827.701980] do_filp_open+0x255/0x380 [ 827.705813] ? may_open_dev+0x100/0x100 [ 827.709993] ? strncpy_from_user+0x3be/0x510 [ 827.714436] ? digsig_verify+0x1530/0x1530 [ 827.718684] ? get_unused_fd_flags+0x122/0x1a0 [ 827.723457] ? getname_flags+0x26e/0x5a0 [ 827.727546] do_sys_open+0x568/0x700 [ 827.731445] ? filp_open+0x80/0x80 [ 827.735021] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 827.740675] __x64_sys_openat+0x9d/0x100 [ 827.744782] do_syscall_64+0x1b9/0x820 [ 827.748679] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 827.754234] ? syscall_return_slowpath+0x5e0/0x5e0 [ 827.759184] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 827.764238] ? trace_hardirqs_on_caller+0x310/0x310 [ 827.769274] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 827.774465] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 827.780223] ? prepare_exit_to_usermode+0x291/0x3b0 [ 827.785266] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 827.790276] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 827.795506] RIP: 0033:0x440ef9 [ 827.798718] 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 [ 827.817813] RSP: 002b:00007ffd82484778 EFLAGS: 00000207 ORIG_RAX: 0000000000000101 [ 827.825694] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440ef9 [ 827.833144] RDX: 000000000000275a RSI: 0000000020000080 RDI: 00000000ffffff9c [ 827.840570] RBP: 0000000000000000 R08: 00000000008c3880 R09: 00000000004002c8 [ 827.847860] R10: 0000000000000000 R11: 0000000000000207 R12: 0000000000401d90 [ 827.855303] R13: 0000000000401e20 R14: 0000000000000000 R15: 0000000000000000 [ 827.862788] INFO: task syz-executor212:5552 blocked for more than 140 seconds. [ 827.870304] Not tainted 4.19.0-rc5+ #40 [ 827.874809] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 827.882939] syz-executor212 D23888 5552 5544 0x00000004 [ 827.888595] Call Trace: [ 827.891366] __schedule+0x86c/0x1ed0 [ 827.895102] ? __pagevec_lru_add_fn+0xd75/0x2a30 [ 827.900075] ? __sched_text_start+0x8/0x8 [ 827.904252] ? print_usage_bug+0xc0/0xc0 [ 827.908324] ? graph_lock+0x170/0x170 [ 827.912304] ? print_usage_bug+0xc0/0xc0 [ 827.916469] ? graph_lock+0x170/0x170 [ 827.920426] ? graph_lock+0x170/0x170 [ 827.924245] ? update_load_avg+0x387/0x2470 [ 827.928579] ? print_usage_bug+0xc0/0xc0 [ 827.932831] ? find_held_lock+0x36/0x1c0 [ 827.936919] schedule+0xfe/0x460 [ 827.940455] ? __schedule+0x1ed0/0x1ed0 [ 827.944462] ? lockdep_hardirqs_on+0x421/0x5c0 [ 827.949065] ? trace_hardirqs_on+0xbd/0x310 [ 827.953575] ? kasan_check_read+0x11/0x20 [ 827.957739] ? __rwsem_down_write_failed_common+0x8db/0x1670 [ 827.963713] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 827.969192] ? kasan_check_write+0x14/0x20 [ 827.973617] ? do_raw_spin_lock+0xc1/0x200 [ 827.977879] __rwsem_down_write_failed_common+0xbb9/0x1670 [ 827.983676] ? rwsem_spin_on_owner+0xa30/0xa30 [ 827.988273] ? print_usage_bug+0xc0/0xc0 [ 827.992502] ? print_usage_bug+0xc0/0xc0 [ 827.996584] ? print_usage_bug+0xc0/0xc0 [ 828.000860] ? print_usage_bug+0xc0/0xc0 [ 828.004962] ? mark_held_locks+0x130/0x130 [ 828.009203] ? __lock_acquire+0x7ec/0x4ec0 [ 828.013630] ? graph_lock+0x170/0x170 [ 828.017459] ? has_ns_capability_noaudit+0x1c8/0x340 [ 828.022795] ? lock_downgrade+0x900/0x900 [ 828.026965] ? find_held_lock+0x36/0x1c0 [ 828.031223] ? ima_match_policy+0x848/0x1560 [ 828.035651] ? lock_downgrade+0x900/0x900 [ 828.039981] ? check_preemption_disabled+0x48/0x200 [ 828.045017] ? graph_lock+0x170/0x170 [ 828.048835] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 828.054838] ? kasan_check_read+0x11/0x20 [ 828.059006] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 828.064454] ? rcu_bh_qs+0xc0/0xc0 [ 828.068032] ? print_usage_bug+0xc0/0xc0 [ 828.072273] ? lock_acquire+0x1ed/0x520 [ 828.076263] ? process_measurement+0x190f/0x1bf0 [ 828.081211] ? lock_release+0x970/0x970 [ 828.085203] ? arch_local_save_flags+0x40/0x40 [ 828.089948] ? ima_lsm_rule_init+0x1c0/0x1c0 [ 828.094381] rwsem_down_write_failed+0xe/0x10 [ 828.098884] ? rwsem_down_write_failed+0xe/0x10 [ 828.103735] call_rwsem_down_write_failed+0x17/0x30 [ 828.108800] down_write+0xa5/0x130 [ 828.112509] ? process_measurement+0x190f/0x1bf0 [ 828.117295] ? down_read+0x1d0/0x1d0 [ 828.121186] ? ima_get_action+0x7e/0xa0 [ 828.125188] process_measurement+0x190f/0x1bf0 [ 828.129942] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 828.135250] ? ima_add_template_entry.cold.4+0x3c/0x3c [ 828.140741] ? dput.part.26+0x26d/0x790 [ 828.144760] ? dquot_get_next_dqblk+0x180/0x180 [ 828.149618] ? shrink_dcache_sb+0x350/0x350 [ 828.153976] ? find_held_lock+0x36/0x1c0 [ 828.158060] ? selinux_task_getsecid+0x1f9/0x3a0 [ 828.162996] ? lock_downgrade+0x900/0x900 [ 828.167175] ? check_preemption_disabled+0x48/0x200 [ 828.172369] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 828.178179] ? kasan_check_read+0x11/0x20 [ 828.182500] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 828.187797] ? rcu_bh_qs+0xc0/0xc0 [ 828.191513] ? selinux_task_getsecid+0x220/0x3a0 [ 828.196285] ? selinux_socket_sock_rcv_skb+0x820/0x820 [ 828.201730] ? ext4_file_read_iter+0x3c0/0x3c0 [ 828.206351] ima_file_check+0xe5/0x130 [ 828.210408] ? process_measurement+0x1bf0/0x1bf0 [ 828.215179] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 828.220545] path_openat+0x134d/0x5160 [ 828.224453] ? rcu_bh_qs+0xc0/0xc0 [ 828.228001] ? unwind_dump+0x190/0x190 [ 828.232090] ? path_lookupat.isra.43+0xc00/0xc00 [ 828.236868] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 828.242058] ? expand_files.part.8+0x571/0x9a0 [ 828.246679] ? __alloc_fd+0x347/0x6e0 [ 828.250699] ? lock_downgrade+0x900/0x900 [ 828.254861] ? getname+0x19/0x20 [ 828.258242] ? kasan_check_read+0x11/0x20 [ 828.262573] ? do_raw_spin_unlock+0xa7/0x2f0 [ 828.267005] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 828.271805] ? __lock_is_held+0xb5/0x140 [ 828.275895] ? _raw_spin_unlock+0x2c/0x50 [ 828.280222] ? __alloc_fd+0x347/0x6e0 [ 828.284050] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 828.289781] do_filp_open+0x255/0x380 [ 828.293602] ? may_open_dev+0x100/0x100 [ 828.297609] ? strncpy_from_user+0x3be/0x510 [ 828.302208] ? digsig_verify+0x1530/0x1530 [ 828.306470] ? get_unused_fd_flags+0x122/0x1a0 [ 828.311228] ? getname_flags+0x26e/0x5a0 [ 828.315321] do_sys_open+0x568/0x700 [ 828.319055] ? filp_open+0x80/0x80 [ 828.322832] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 828.328311] __x64_sys_openat+0x9d/0x100 [ 828.332543] do_syscall_64+0x1b9/0x820 [ 828.336449] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 828.341981] ? syscall_return_slowpath+0x5e0/0x5e0 [ 828.346933] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 828.351953] ? trace_hardirqs_on_caller+0x310/0x310 [ 828.356994] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 828.362189] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 828.367745] ? prepare_exit_to_usermode+0x291/0x3b0 [ 828.372942] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 828.377814] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 828.383171] RIP: 0033:0x440ef9 [ 828.386381] 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 [ 828.405450] RSP: 002b:00007ffd82484778 EFLAGS: 00000207 ORIG_RAX: 0000000000000101 [ 828.413626] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440ef9 [ 828.421344] RDX: 000000000000275a RSI: 0000000020000080 RDI: 00000000ffffff9c [ 828.428625] RBP: 0000000000000000 R08: 00000000008c3880 R09: 00000000004002c8 [ 828.436349] R10: 0000000000000000 R11: 0000000000000207 R12: 0000000000401d90 [ 828.444109] R13: 0000000000401e20 R14: 0000000000000000 R15: 0000000000000000 [ 828.451878] INFO: task syz-executor212:5553 blocked for more than 140 seconds. [ 828.459247] Not tainted 4.19.0-rc5+ #40 [ 828.464113] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 828.472434] syz-executor212 D23736 5553 5542 0x00000004 [ 828.478084] Call Trace: [ 828.481170] __schedule+0x86c/0x1ed0 [ 828.484900] ? __pagevec_lru_add_fn+0xd75/0x2a30 [ 828.490117] ? __sched_text_start+0x8/0x8 [ 828.494287] ? print_usage_bug+0xc0/0xc0 [ 828.498359] ? graph_lock+0x170/0x170 [ 828.502624] ? print_usage_bug+0xc0/0xc0 [ 828.506716] ? graph_lock+0x170/0x170 [ 828.510984] ? graph_lock+0x170/0x170 [ 828.514821] ? print_usage_bug+0xc0/0xc0 [ 828.518897] ? find_held_lock+0x36/0x1c0 [ 828.523556] schedule+0xfe/0x460 [ 828.526942] ? __schedule+0x1ed0/0x1ed0 [ 828.531374] ? lockdep_hardirqs_on+0x421/0x5c0 [ 828.535974] ? trace_hardirqs_on+0xbd/0x310 [ 828.540774] ? kasan_check_read+0x11/0x20 [ 828.544953] ? __rwsem_down_write_failed_common+0x8db/0x1670 [ 828.551248] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 828.556809] ? kasan_check_write+0x14/0x20 [ 828.561590] ? do_raw_spin_lock+0xc1/0x200 [ 828.565849] __rwsem_down_write_failed_common+0xbb9/0x1670 [ 828.572011] ? rwsem_spin_on_owner+0xa30/0xa30 [ 828.576622] ? print_usage_bug+0xc0/0xc0 [ 828.581167] ? print_usage_bug+0xc0/0xc0 [ 828.585242] ? print_usage_bug+0xc0/0xc0 [ 828.589309] ? print_usage_bug+0xc0/0xc0 [ 828.593941] ? mark_held_locks+0x130/0x130 [ 828.598192] ? __lock_acquire+0x7ec/0x4ec0 [ 828.602941] ? graph_lock+0x170/0x170 [ 828.606780] ? has_ns_capability_noaudit+0x1c8/0x340 [ 828.612346] ? lock_downgrade+0x900/0x900 [ 828.616515] ? find_held_lock+0x36/0x1c0 [ 828.621108] ? ima_match_policy+0x848/0x1560 [ 828.625724] ? lock_downgrade+0x900/0x900 [ 828.630331] ? check_preemption_disabled+0x48/0x200 [ 828.635365] ? graph_lock+0x170/0x170 [ 828.639180] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 828.645445] ? kasan_check_read+0x11/0x20 [ 828.650077] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 828.655374] ? rcu_bh_qs+0xc0/0xc0 [ 828.658925] ? print_usage_bug+0xc0/0xc0 [ 828.663512] ? lock_acquire+0x1ed/0x520 [ 828.667534] ? process_measurement+0x190f/0x1bf0 [ 828.672776] ? lock_release+0x970/0x970 [ 828.676775] ? arch_local_save_flags+0x40/0x40 [ 828.681834] ? ima_lsm_rule_init+0x1c0/0x1c0 [ 828.686263] rwsem_down_write_failed+0xe/0x10 [ 828.691213] ? rwsem_down_write_failed+0xe/0x10 [ 828.695900] call_rwsem_down_write_failed+0x17/0x30 [ 828.701380] down_write+0xa5/0x130 [ 828.704934] ? process_measurement+0x190f/0x1bf0 [ 828.710148] ? down_read+0x1d0/0x1d0 [ 828.713879] ? ima_get_action+0x7e/0xa0 [ 828.717869] process_measurement+0x190f/0x1bf0 [ 828.723000] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 828.728318] ? ima_add_template_entry.cold.4+0x3c/0x3c [ 828.734095] ? dput.part.26+0x26d/0x790 [ 828.738086] ? dquot_get_next_dqblk+0x180/0x180 [ 828.743212] ? shrink_dcache_sb+0x350/0x350 [ 828.747562] ? find_held_lock+0x36/0x1c0 [ 828.752255] ? selinux_task_getsecid+0x1f9/0x3a0 [ 828.757034] ? lock_downgrade+0x900/0x900 [ 828.761630] ? check_preemption_disabled+0x48/0x200 [ 828.766669] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 828.772909] ? kasan_check_read+0x11/0x20 [ 828.777078] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 828.782885] ? rcu_bh_qs+0xc0/0xc0 [ 828.786504] ? selinux_task_getsecid+0x220/0x3a0 [ 828.791710] ? selinux_socket_sock_rcv_skb+0x820/0x820 [ 828.797009] ? ext4_file_read_iter+0x3c0/0x3c0 [ 828.802166] ima_file_check+0xe5/0x130 [ 828.806076] ? process_measurement+0x1bf0/0x1bf0 [ 828.811290] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 828.816506] path_openat+0x134d/0x5160 [ 828.820849] ? rcu_bh_qs+0xc0/0xc0 [ 828.824413] ? unwind_dump+0x190/0x190 [ 828.828325] ? path_lookupat.isra.43+0xc00/0xc00 [ 828.833633] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 828.838671] ? expand_files.part.8+0x571/0x9a0 [ 828.843714] ? __alloc_fd+0x347/0x6e0 [ 828.847532] ? lock_downgrade+0x900/0x900 [ 828.852163] ? getname+0x19/0x20 [ 828.855550] ? kasan_check_read+0x11/0x20 [ 828.860152] ? do_raw_spin_unlock+0xa7/0x2f0 [ 828.864591] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 828.869178] ? __lock_is_held+0xb5/0x140 [ 828.873708] ? _raw_spin_unlock+0x2c/0x50 [ 828.877875] ? __alloc_fd+0x347/0x6e0 [ 828.882130] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 828.887695] do_filp_open+0x255/0x380 [ 828.891948] ? may_open_dev+0x100/0x100 [ 828.895943] ? strncpy_from_user+0x3be/0x510 [ 828.900844] ? digsig_verify+0x1530/0x1530 [ 828.905103] ? get_unused_fd_flags+0x122/0x1a0 [ 828.910139] ? getname_flags+0x26e/0x5a0 [ 828.914224] do_sys_open+0x568/0x700 [ 828.917953] ? filp_open+0x80/0x80 [ 828.921957] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 828.927431] __x64_sys_openat+0x9d/0x100 [ 828.931962] do_syscall_64+0x1b9/0x820 [ 828.935866] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 828.941674] ? syscall_return_slowpath+0x5e0/0x5e0 [ 828.946616] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 828.951910] ? trace_hardirqs_on_caller+0x310/0x310 [ 828.956953] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 828.962466] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 828.968034] ? prepare_exit_to_usermode+0x291/0x3b0 [ 828.973521] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 828.978391] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 828.984126] RIP: 0033:0x440ef9 [ 828.987334] 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 [ 829.006679] RSP: 002b:00007ffd82484778 EFLAGS: 00000207 ORIG_RAX: 0000000000000101 [ 829.016209] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440ef9 [ 829.023917] RDX: 000000000000275a RSI: 0000000020000080 RDI: 00000000ffffff9c [ 829.031644] RBP: 0000000000000000 R08: 00000000008c3880 R09: 00000000004002c8 [ 829.038925] R10: 0000000000000000 R11: 0000000000000207 R12: 0000000000401d90 [ 829.046751] R13: 0000000000401e20 R14: 0000000000000000 R15: 0000000000000000 [ 829.054500] [ 829.054500] Showing all locks held in the system: [ 829.061295] 1 lock held by khungtaskd/983: [ 829.065537] #0: 000000005e364832 (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 [ 829.074718] 1 lock held by rsyslogd/5383: [ 829.078883] #0: 000000003ee63875 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 [ 829.087359] 2 locks held by getty/5505: [ 829.091762] #0: 0000000016366007 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 829.100471] #1: 000000001962389b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 829.109364] 2 locks held by getty/5506: [ 829.113817] #0: 00000000459f06bd (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 829.122557] #1: 000000009ba0e33f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 829.131902] 2 locks held by getty/5507: [ 829.135885] #0: 00000000ed059e98 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 829.144619] #1: 000000006a8dd22c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 829.154061] 2 locks held by getty/5508: [ 829.158073] #0: 00000000de392f74 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 829.166891] #1: 000000002f41f35e (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 829.176264] 2 locks held by getty/5509: [ 829.180702] #0: 000000004b0015bd (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 829.188977] #1: 00000000fbcabc1c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 829.198359] 2 locks held by getty/5510: [ 829.202769] #0: 000000000749babf (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 829.211460] #1: 0000000039eaad48 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 829.220830] 2 locks held by getty/5511: [ 829.224808] #0: 000000009592ef13 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 829.233557] #1: 0000000080736cf9 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 829.242900] 2 locks held by syz-executor212/5548: [ 829.247750] #0: 00000000dd953693 (sb_writers#4){.+.+}, at: vfs_fallocate+0x72a/0x940 [ 829.256396] #1: 000000000a255960 (&sb->s_type->i_mutex_key#9){+.+.}, at: ext4_fallocate+0x921/0x2300 [ 829.266258] 6 locks held by syz-executor212/5549: [ 829.271533] 2 locks held by syz-executor212/5550: [ 829.276379] #0: 00000000dd953693 (sb_writers#4){.+.+}, at: mnt_want_write+0x3f/0xc0 [ 829.284760] #1: 000000000a255960 (&sb->s_type->i_mutex_key#9){+.+.}, at: process_measurement+0x190f/0x1bf0 [ 829.295186] 2 locks held by syz-executor212/5551: [ 829.300459] #0: 00000000dd953693 (sb_writers#4){.+.+}, at: mnt_want_write+0x3f/0xc0 [ 829.308403] #1: 000000000a255960 (&sb->s_type->i_mutex_key#9){+.+.}, at: process_measurement+0x190f/0x1bf0 [ 829.318870] 2 locks held by syz-executor212/5552: [ 829.324173] #0: 00000000dd953693 (sb_writers#4){.+.+}, at: mnt_want_write+0x3f/0xc0 [ 829.332536] #1: 000000000a255960 (&sb->s_type->i_mutex_key#9){+.+.}, at: process_measurement+0x190f/0x1bf0 [ 829.342994] 2 locks held by syz-executor212/5553: [ 829.347846] #0: 00000000dd953693 (sb_writers#4){.+.+}, at: mnt_want_write+0x3f/0xc0 [ 829.356249] #1: 000000000a255960 (&sb->s_type->i_mutex_key#9){+.+.}, at: process_measurement+0x190f/0x1bf0 [ 829.366614] [ 829.368253] ============================================= [ 829.368253] [ 829.375718] NMI backtrace for cpu 0 [ 829.379364] CPU: 0 PID: 983 Comm: khungtaskd Not tainted 4.19.0-rc5+ #40 [ 829.386201] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 829.395556] Call Trace: [ 829.398157] dump_stack+0x1c4/0x2b4 [ 829.401800] ? dump_stack_print_info.cold.2+0x52/0x52 [ 829.407002] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 829.412559] nmi_cpu_backtrace.cold.3+0x63/0xa2 [ 829.417240] ? lapic_can_unplug_cpu.cold.27+0x3f/0x3f [ 829.422441] nmi_trigger_cpumask_backtrace+0x1b3/0x1ed [ 829.427729] arch_trigger_cpumask_backtrace+0x14/0x20 [ 829.432929] watchdog+0xb3e/0x1050 [ 829.436487] ? reset_hung_task_detector+0xd0/0xd0 [ 829.441341] ? __kthread_parkme+0xce/0x1a0 [ 829.445588] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 829.450701] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 829.455818] ? lockdep_hardirqs_on+0x421/0x5c0 [ 829.460409] ? trace_hardirqs_on+0xbd/0x310 [ 829.464738] ? kasan_check_read+0x11/0x20 [ 829.468895] ? __kthread_parkme+0xce/0x1a0 [ 829.473142] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 829.478602] ? kasan_check_write+0x14/0x20 [ 829.482849] ? do_raw_spin_lock+0xc1/0x200 [ 829.487093] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 829.492202] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 829.497746] ? __kthread_parkme+0xfb/0x1a0 [ 829.501995] kthread+0x35a/0x420 [ 829.505377] ? reset_hung_task_detector+0xd0/0xd0 [ 829.510225] ? kthread_bind+0x40/0x40 [ 829.514041] ret_from_fork+0x3a/0x50 [ 829.518541] Sending NMI from CPU 0 to CPUs 1: [ 829.524082] NMI backtrace for cpu 1 [ 829.524090] CPU: 1 PID: 5549 Comm: syz-executor212 Not tainted 4.19.0-rc5+ #40 [ 829.524098] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 829.524103] RIP: 0010:mext_check_coverage.constprop.13+0x20d/0x510 [ 829.524116] Code: 86 16 fe ff ff 4c 8d 24 40 48 b8 00 00 00 00 00 fc ff df 49 c1 e4 04 49 01 dc 49 8d 7c 24 10 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 36 02 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 64 24 10 49 [ 829.524121] RSP: 0018:ffff8801b4af71c0 EFLAGS: 00000246 [ 829.524131] RAX: dffffc0000000000 RBX: ffff8801bac71600 RCX: ffffffff821e4a52 [ 829.524137] RDX: 1ffff1003758e2c2 RSI: ffffffff821e493b RDI: ffff8801bac71610 [ 829.524144] RBP: ffff8801b4af7270 R08: ffff8801c3056180 R09: 1ffffffff1273955 [ 829.524150] R10: ffffed003b5e4732 R11: ffff8801daf23993 R12: ffff8801bac71600 [ 829.524156] R13: 00000000cbb0eca5 R14: ffff8801b0f34530 R15: ffff8801b4af73e0 [ 829.524163] FS: 00000000008c3880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 829.524168] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 829.524174] CR2: ffffffffff600400 CR3: 00000001c59e4000 CR4: 00000000001406e0 [ 829.524178] Call Trace: [ 829.524183] ? mext_page_mkuptodate+0x12b0/0x12b0 [ 829.524187] ext4_move_extents+0x2784/0x3c20 [ 829.524192] ? ext4_double_up_write_data_sem+0x30/0x30 [ 829.524196] ? graph_lock+0x170/0x170 [ 829.524200] ? graph_lock+0x170/0x170 [ 829.524205] ? __lock_acquire+0x7ec/0x4ec0 [ 829.524209] ? mark_held_locks+0x130/0x130 [ 829.524213] ? graph_lock+0x170/0x170 [ 829.524218] ? print_usage_bug+0xc0/0xc0 [ 829.524222] ? lockdep_hardirqs_on+0x421/0x5c0 [ 829.524227] ? print_usage_bug+0xc0/0xc0 [ 829.524231] ? graph_lock+0x170/0x170 [ 829.524236] ? check_preemption_disabled+0x48/0x200 [ 829.524240] ? check_preemption_disabled+0x48/0x200 [ 829.524245] ? __lock_is_held+0xb5/0x140 [ 829.524250] ? rcu_read_lock_sched_held+0x108/0x120 [ 829.524254] ? preempt_count_add+0x7d/0x160 [ 829.524259] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 829.524264] ? __mnt_want_write_file+0xa2/0xc0 [ 829.524268] ext4_ioctl+0x3154/0x4210 [ 829.524273] ? ext4_ioctl_group_add+0x560/0x560 [ 829.524278] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 829.524282] ? kasan_check_read+0x11/0x20 [ 829.524287] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 829.524291] ? rcu_bh_qs+0xc0/0xc0 [ 829.524296] ? __rwsem_mark_wake.constprop.5+0xd0/0xd0 [ 829.524301] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 829.524306] ? avc_has_extended_perms+0xab2/0x15a0 [ 829.524310] ? avc_ss_reset+0x190/0x190 [ 829.524315] ? find_held_lock+0x36/0x1c0 [ 829.524319] ? dput.part.26+0x241/0x790 [ 829.524323] ? kasan_check_read+0x11/0x20 [ 829.524328] ? ___might_sleep+0x1ed/0x300 [ 829.524332] ? rcu_bh_qs+0xc0/0xc0 [ 829.524336] ? arch_local_save_flags+0x40/0x40 [ 829.524341] ? kasan_check_write+0x14/0x20 [ 829.524345] ? do_raw_spin_lock+0xc1/0x200 [ 829.524350] ? ext4_ioctl_group_add+0x560/0x560 [ 829.524354] do_vfs_ioctl+0x1de/0x1720 [ 829.524359] ? ioctl_preallocate+0x300/0x300 [ 829.524363] ? selinux_file_mprotect+0x620/0x620 [ 829.524369] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 829.524373] ? do_syscall_64+0x9a/0x820 [ 829.524378] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 829.524382] ? security_file_ioctl+0x94/0xc0 [ 829.524386] ksys_ioctl+0xa9/0xd0 [ 829.524391] __x64_sys_ioctl+0x73/0xb0 [ 829.524395] do_syscall_64+0x1b9/0x820 [ 829.524400] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 829.524405] ? syscall_return_slowpath+0x5e0/0x5e0 [ 829.524409] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 829.524414] ? trace_hardirqs_on_caller+0x310/0x310 [ 829.524419] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 829.524424] ? prepare_exit_to_usermode+0x291/0x3b0 [ 829.524429] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 829.524434] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 829.524438] RIP: 0033:0x440ef9 [ 829.524451] 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 [ 829.524455] RSP: 002b:00007ffd82484778 EFLAGS: 00000217 ORIG_RAX: 0000000000000010 [ 829.524466] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440ef9 [ 829.524473] RDX: 0000000020000040 RSI: 00000000c028660f RDI: 0000000000000003 [ 829.524479] RBP: 0000000000000000 R08: 00000000004002c8 R09: 00000000004002c8 [ 829.524485] R10: 00000000004002c8 R11: 0000000000000217 R12: 0000000000401d90 [ 829.524491] R13: 0000000000401e20 R14: 0000000000000000 R15: 0000000000000000 [ 829.529989] Kernel panic - not syncing: hung_task: blocked tasks [ 829.960314] CPU: 0 PID: 983 Comm: khungtaskd Not tainted 4.19.0-rc5+ #40 [ 829.967150] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 829.976501] Call Trace: [ 829.979110] dump_stack+0x1c4/0x2b4 [ 829.982762] ? dump_stack_print_info.cold.2+0x52/0x52 [ 829.987975] panic+0x238/0x4e7 [ 829.991174] ? add_taint.cold.5+0x16/0x16 [ 829.995333] ? nmi_trigger_cpumask_backtrace+0x16a/0x1ed [ 830.000793] ? nmi_trigger_cpumask_backtrace+0x1c4/0x1ed [ 830.006252] ? nmi_trigger_cpumask_backtrace+0x173/0x1ed [ 830.011707] ? nmi_trigger_cpumask_backtrace+0x16a/0x1ed [ 830.017196] watchdog+0xb4f/0x1050 [ 830.020765] ? reset_hung_task_detector+0xd0/0xd0 [ 830.025632] ? __kthread_parkme+0xce/0x1a0 [ 830.029875] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 830.034996] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 830.040117] ? lockdep_hardirqs_on+0x421/0x5c0 [ 830.044705] ? trace_hardirqs_on+0xbd/0x310 [ 830.049038] ? kasan_check_read+0x11/0x20 [ 830.053197] ? __kthread_parkme+0xce/0x1a0 [ 830.057441] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 830.062897] ? kasan_check_write+0x14/0x20 [ 830.067148] ? do_raw_spin_lock+0xc1/0x200 [ 830.071396] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 830.076518] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 830.082065] ? __kthread_parkme+0xfb/0x1a0 [ 830.086309] kthread+0x35a/0x420 [ 830.089681] ? reset_hung_task_detector+0xd0/0xd0 [ 830.094525] ? kthread_bind+0x40/0x40 [ 830.098337] ret_from_fork+0x3a/0x50 [ 830.103187] Kernel Offset: disabled [ 830.106819] Rebooting in 86400 seconds..