[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 37.875915] audit: type=1800 audit(1545698590.386:25): pid=7736 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 37.917643] audit: type=1800 audit(1545698590.396:26): pid=7736 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 37.951142] audit: type=1800 audit(1545698590.396:27): pid=7736 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.100' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 102.399686] FAULT_INJECTION: forcing a failure. [ 102.399686] name failslab, interval 1, probability 0, space 0, times 1 [ 102.411643] CPU: 1 PID: 7889 Comm: syz-executor609 Not tainted 4.20.0 #387 [ 102.418660] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 102.427991] Call Trace: [ 102.430568] dump_stack+0x1d3/0x2c6 [ 102.434193] ? dump_stack_print_info.cold.1+0x20/0x20 [ 102.439370] ? find_held_lock+0x36/0x1c0 [ 102.443419] should_fail.cold.4+0xa/0x17 [ 102.447462] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 102.452545] ? graph_lock+0x270/0x270 [ 102.456331] ? print_usage_bug+0xc0/0xc0 [ 102.460380] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 102.465382] ? pcpu_next_fit_region.constprop.20+0x334/0x410 [ 102.471174] ? kasan_check_write+0x14/0x20 [ 102.475424] ? __mutex_unlock_slowpath+0x197/0x8c0 [ 102.480357] ? graph_lock+0x270/0x270 [ 102.484139] ? wait_for_completion+0x8a0/0x8a0 [ 102.488708] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 102.494233] ? check_preemption_disabled+0x48/0x280 [ 102.499237] ? __lock_is_held+0xb5/0x140 [ 102.503301] __should_failslab+0x124/0x180 [ 102.507518] should_failslab+0x9/0x14 [ 102.511305] kmem_cache_alloc_trace+0x4b/0x750 [ 102.515894] __hw_addr_create_ex+0xb2/0x3f0 [ 102.520201] ? dev_mc_init+0x170/0x170 [ 102.524072] __hw_addr_add_ex+0x1ef/0x2b0 [ 102.528207] dev_addr_init+0x169/0x260 [ 102.532079] ? __hw_addr_add_ex+0x2b0/0x2b0 [ 102.536385] ? kasan_unpoison_shadow+0x35/0x50 [ 102.540951] ? kasan_kmalloc+0xc7/0xe0 [ 102.544823] ? __kmalloc_node+0x50/0x70 [ 102.548785] alloc_netdev_mqs+0x21b/0xfe0 [ 102.552914] ? number+0x972/0xca0 [ 102.556349] ? x25_asy_connected+0x270/0x270 [ 102.560761] ? free_netdev+0x450/0x450 [ 102.564630] ? put_dec+0xf0/0xf0 [ 102.567976] ? format_decode+0x1b2/0xaf0 [ 102.572034] ? enable_ptr_key_workfn+0x30/0x30 [ 102.576612] ? graph_lock+0x270/0x270 [ 102.580399] ? trace_hardirqs_off+0xb8/0x310 [ 102.584792] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 102.590313] ? vsnprintf+0x20d/0x1b60 [ 102.594114] ? pointer+0x900/0x900 [ 102.597641] ? sprintf+0xb0/0xe0 [ 102.600989] ? scnprintf+0x130/0x130 [ 102.604684] ? __kasan_slab_free+0x119/0x150 [ 102.609079] x25_asy_open_tty+0x551/0x7e7 [ 102.613228] ? x25_asy_close_tty+0x220/0x220 [ 102.617618] ? down_write_nested+0x130/0x130 [ 102.622021] ? down_read+0x120/0x120 [ 102.625719] ? x25_asy_close_tty+0x220/0x220 [ 102.630188] tty_ldisc_open.isra.1+0x8b/0xe0 [ 102.634612] tty_set_ldisc+0x2dc/0x6a0 [ 102.638493] tty_ioctl+0x39d/0x17d0 [ 102.642104] ? tty_vhangup+0x30/0x30 [ 102.645809] ? get_pid_task+0xd6/0x1a0 [ 102.649696] ? lock_downgrade+0x900/0x900 [ 102.653840] ? check_preemption_disabled+0x48/0x280 [ 102.658839] ? rcu_read_unlock_special+0x1d0/0x1d0 [ 102.663838] ? kasan_check_read+0x11/0x20 [ 102.667978] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 102.673255] ? rcu_softirq_qs+0x20/0x20 [ 102.677213] ? find_vpid+0xf0/0xf0 [ 102.680742] ? graph_lock+0x270/0x270 [ 102.684531] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 102.690053] ? proc_fail_nth_write+0x9e/0x210 [ 102.694532] ? proc_cwd_link+0x1d0/0x1d0 [ 102.698577] ? trace_hardirqs_off+0xb8/0x310 [ 102.703088] ? find_held_lock+0x36/0x1c0 [ 102.707138] ? vfs_write+0x2f3/0x560 [ 102.710843] ? tty_vhangup+0x30/0x30 [ 102.714545] do_vfs_ioctl+0x1de/0x1790 [ 102.718416] ? __lock_is_held+0xb5/0x140 [ 102.722476] ? ioctl_preallocate+0x300/0x300 [ 102.726899] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 102.732418] ? __fget_light+0x2e9/0x430 [ 102.736447] ? fget_raw+0x20/0x20 [ 102.739898] ? __sb_end_write+0xd9/0x110 [ 102.743954] ? do_syscall_64+0x9a/0x820 [ 102.747913] ? do_syscall_64+0x9a/0x820 [ 102.751873] ? lockdep_hardirqs_on+0x421/0x5c0 [ 102.756554] ? security_file_ioctl+0x94/0xc0 [ 102.760951] ksys_ioctl+0xa9/0xd0 [ 102.764395] __x64_sys_ioctl+0x73/0xb0 [ 102.768270] do_syscall_64+0x1b9/0x820 [ 102.772146] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 102.777504] ? syscall_return_slowpath+0x5e0/0x5e0 [ 102.782418] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 102.787248] ? trace_hardirqs_on_caller+0x310/0x310 [ 102.792248] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 102.797252] ? prepare_exit_to_usermode+0x291/0x3b0 [ 102.802254] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 102.807099] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 102.812291] RIP: 0033:0x441019 [ 102.815471] Code: e8 0c ad 02 00 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 bb 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 102.834358] RSP: 002b:00007ffe025ca528 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 102.842047] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441019 executing program [ 102.849313] RDX: 0000000020000080 RSI: 0000000000005423 RDI: 0000000000000004 [ 102.856567] RBP: 00007ffe025ca540 R08: 0000000000000001 R09: 0000000000000000 [ 102.863837] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 102.871090] R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 [ 102.886238] FAULT_INJECTION: forcing a failure. [ 102.886238] name failslab, interval 1, probability 0, space 0, times 0 [ 102.897503] CPU: 1 PID: 7890 Comm: syz-executor609 Not tainted 4.20.0 #387 [ 102.904506] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 102.913855] Call Trace: [ 102.916440] dump_stack+0x1d3/0x2c6 [ 102.920052] ? dump_stack_print_info.cold.1+0x20/0x20 [ 102.925231] ? find_held_lock+0x36/0x1c0 [ 102.929277] should_fail.cold.4+0xa/0x17 [ 102.933323] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 102.938411] ? graph_lock+0x270/0x270 [ 102.942221] ? print_usage_bug+0xc0/0xc0 [ 102.946392] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 102.951415] ? pcpu_next_fit_region.constprop.20+0x334/0x410 [ 102.957203] ? kasan_check_write+0x14/0x20 [ 102.961425] ? __mutex_unlock_slowpath+0x197/0x8c0 [ 102.966342] ? graph_lock+0x270/0x270 [ 102.970123] ? wait_for_completion+0x8a0/0x8a0 [ 102.974691] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 102.980228] ? check_preemption_disabled+0x48/0x280 [ 102.985241] ? __lock_is_held+0xb5/0x140 [ 102.989292] __should_failslab+0x124/0x180 [ 102.993509] should_failslab+0x9/0x14 [ 102.997293] kmem_cache_alloc_trace+0x4b/0x750 [ 103.001867] __hw_addr_create_ex+0xb2/0x3f0 [ 103.006271] ? dev_mc_init+0x170/0x170 [ 103.010174] __hw_addr_add_ex+0x1ef/0x2b0 [ 103.014307] dev_addr_init+0x169/0x260 [ 103.018196] ? __hw_addr_add_ex+0x2b0/0x2b0 [ 103.022499] ? kasan_unpoison_shadow+0x35/0x50 [ 103.027064] ? kasan_kmalloc+0xc7/0xe0 [ 103.030951] ? __kmalloc_node+0x50/0x70 [ 103.034912] alloc_netdev_mqs+0x21b/0xfe0 [ 103.039123] ? number+0x972/0xca0 [ 103.042573] ? x25_asy_connected+0x270/0x270 [ 103.046966] ? free_netdev+0x450/0x450 [ 103.050842] ? put_dec+0xf0/0xf0 [ 103.054194] ? format_decode+0x1b2/0xaf0 [ 103.058238] ? enable_ptr_key_workfn+0x30/0x30 [ 103.062801] ? graph_lock+0x270/0x270 [ 103.066588] ? trace_hardirqs_off+0xb8/0x310 [ 103.071016] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 103.076533] ? vsnprintf+0x20d/0x1b60 [ 103.080320] ? pointer+0x900/0x900 [ 103.083848] ? sprintf+0xb0/0xe0 [ 103.087196] ? scnprintf+0x130/0x130 [ 103.090893] ? __kasan_slab_free+0x119/0x150 [ 103.095286] x25_asy_open_tty+0x551/0x7e7 [ 103.099419] ? x25_asy_close_tty+0x220/0x220 [ 103.103819] ? down_write_nested+0x130/0x130 [ 103.108208] ? down_read+0x120/0x120 [ 103.111903] ? x25_asy_close_tty+0x220/0x220 [ 103.116295] tty_ldisc_open.isra.1+0x8b/0xe0 [ 103.120684] tty_set_ldisc+0x2dc/0x6a0 [ 103.124556] tty_ioctl+0x39d/0x17d0 [ 103.128169] ? tty_vhangup+0x30/0x30 [ 103.131868] ? get_pid_task+0xd6/0x1a0 [ 103.135738] ? lock_downgrade+0x900/0x900 [ 103.139886] ? check_preemption_disabled+0x48/0x280 [ 103.145002] ? rcu_read_unlock_special+0x1d0/0x1d0 [ 103.149933] ? kasan_check_read+0x11/0x20 [ 103.154065] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 103.159324] ? rcu_softirq_qs+0x20/0x20 [ 103.163281] ? find_vpid+0xf0/0xf0 [ 103.166808] ? graph_lock+0x270/0x270 [ 103.170597] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 103.176118] ? proc_fail_nth_write+0x9e/0x210 [ 103.180595] ? proc_cwd_link+0x1d0/0x1d0 [ 103.184643] ? trace_hardirqs_off+0xb8/0x310 [ 103.189038] ? find_held_lock+0x36/0x1c0 [ 103.193096] ? vfs_write+0x2f3/0x560 [ 103.196801] ? tty_vhangup+0x30/0x30 [ 103.200502] do_vfs_ioctl+0x1de/0x1790 [ 103.204376] ? __lock_is_held+0xb5/0x140 [ 103.208422] ? ioctl_preallocate+0x300/0x300 [ 103.212814] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 103.218340] ? __fget_light+0x2e9/0x430 [ 103.222300] ? fget_raw+0x20/0x20 [ 103.225736] ? __sb_end_write+0xd9/0x110 [ 103.229833] ? do_syscall_64+0x9a/0x820 [ 103.233802] ? do_syscall_64+0x9a/0x820 [ 103.237764] ? lockdep_hardirqs_on+0x421/0x5c0 [ 103.242338] ? security_file_ioctl+0x94/0xc0 [ 103.246731] ksys_ioctl+0xa9/0xd0 [ 103.250178] __x64_sys_ioctl+0x73/0xb0 [ 103.254048] do_syscall_64+0x1b9/0x820 [ 103.257920] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 103.263268] ? syscall_return_slowpath+0x5e0/0x5e0 [ 103.268182] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 103.273007] ? trace_hardirqs_on_caller+0x310/0x310 [ 103.278008] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 103.283016] ? prepare_exit_to_usermode+0x291/0x3b0 [ 103.288016] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 103.292848] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 103.298019] RIP: 0033:0x441019 [ 103.301199] Code: e8 0c ad 02 00 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 bb 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 103.320081] RSP: 002b:00007ffe025ca528 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 103.327772] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441019 [ 103.335024] RDX: 0000000020000080 RSI: 0000000000005423 RDI: 0000000000000004 [ 103.342275] RBP: 00007ffe025ca540 R08: 0000000000000001 R09: 0000000000000000 executing program [ 103.349525] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 103.356776] R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 [ 103.370611] FAULT_INJECTION: forcing a failure. [ 103.370611] name failslab, interval 1, probability 0, space 0, times 0 [ 103.381976] CPU: 0 PID: 7891 Comm: syz-executor609 Not tainted 4.20.0 #387 [ 103.389089] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 103.398425] Call Trace: [ 103.401010] dump_stack+0x1d3/0x2c6 [ 103.404622] ? dump_stack_print_info.cold.1+0x20/0x20 [ 103.409904] ? find_held_lock+0x36/0x1c0 [ 103.413963] should_fail.cold.4+0xa/0x17 [ 103.418014] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 103.423138] ? graph_lock+0x270/0x270 [ 103.426961] ? print_usage_bug+0xc0/0xc0 [ 103.431024] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 103.436027] ? pcpu_next_fit_region.constprop.20+0x334/0x410 [ 103.441831] ? kasan_check_write+0x14/0x20 [ 103.446056] ? __mutex_unlock_slowpath+0x197/0x8c0 [ 103.450975] ? graph_lock+0x270/0x270 [ 103.454765] ? wait_for_completion+0x8a0/0x8a0 [ 103.459335] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 103.464997] ? check_preemption_disabled+0x48/0x280 [ 103.470023] ? __lock_is_held+0xb5/0x140 [ 103.474071] __should_failslab+0x124/0x180 [ 103.478433] should_failslab+0x9/0x14 [ 103.482231] kmem_cache_alloc_trace+0x4b/0x750 [ 103.486802] __hw_addr_create_ex+0xb2/0x3f0 [ 103.491235] ? dev_mc_init+0x170/0x170 [ 103.495220] __hw_addr_add_ex+0x1ef/0x2b0 [ 103.499354] dev_addr_init+0x169/0x260 [ 103.503259] ? __hw_addr_add_ex+0x2b0/0x2b0 [ 103.507585] ? kasan_unpoison_shadow+0x35/0x50 [ 103.512273] ? kasan_kmalloc+0xc7/0xe0 [ 103.516142] ? __kmalloc_node+0x50/0x70 [ 103.520103] alloc_netdev_mqs+0x21b/0xfe0 [ 103.524236] ? number+0x972/0xca0 [ 103.527735] ? x25_asy_connected+0x270/0x270 [ 103.532178] ? free_netdev+0x450/0x450 [ 103.536059] ? put_dec+0xf0/0xf0 [ 103.539404] ? format_decode+0x1b2/0xaf0 [ 103.543519] ? enable_ptr_key_workfn+0x30/0x30 [ 103.548114] ? graph_lock+0x270/0x270 [ 103.551898] ? trace_hardirqs_off+0xb8/0x310 [ 103.556312] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 103.561859] ? vsnprintf+0x20d/0x1b60 [ 103.565655] ? pointer+0x900/0x900 [ 103.569214] ? sprintf+0xb0/0xe0 [ 103.572565] ? scnprintf+0x130/0x130 [ 103.576317] ? __kasan_slab_free+0x119/0x150 [ 103.580712] x25_asy_open_tty+0x551/0x7e7 [ 103.584861] ? x25_asy_close_tty+0x220/0x220 [ 103.589252] ? down_write_nested+0x130/0x130 [ 103.593691] ? down_read+0x120/0x120 [ 103.597397] ? x25_asy_close_tty+0x220/0x220 [ 103.601795] tty_ldisc_open.isra.1+0x8b/0xe0 [ 103.606189] tty_set_ldisc+0x2dc/0x6a0 [ 103.610063] tty_ioctl+0x39d/0x17d0 [ 103.613707] ? tty_vhangup+0x30/0x30 [ 103.617408] ? get_pid_task+0xd6/0x1a0 [ 103.621322] ? lock_downgrade+0x900/0x900 [ 103.625455] ? check_preemption_disabled+0x48/0x280 [ 103.630462] ? rcu_read_unlock_special+0x1d0/0x1d0 [ 103.635374] ? kasan_check_read+0x11/0x20 [ 103.639505] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 103.644764] ? rcu_softirq_qs+0x20/0x20 [ 103.648718] ? find_vpid+0xf0/0xf0 [ 103.652248] ? graph_lock+0x270/0x270 [ 103.656036] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 103.661555] ? proc_fail_nth_write+0x9e/0x210 [ 103.666033] ? proc_cwd_link+0x1d0/0x1d0 [ 103.670188] ? trace_hardirqs_off+0xb8/0x310 [ 103.674601] ? find_held_lock+0x36/0x1c0 [ 103.678654] ? vfs_write+0x2f3/0x560 [ 103.682352] ? tty_vhangup+0x30/0x30 [ 103.686048] do_vfs_ioctl+0x1de/0x1790 [ 103.690193] ? __lock_is_held+0xb5/0x140 [ 103.694243] ? ioctl_preallocate+0x300/0x300 [ 103.698755] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 103.704420] ? __fget_light+0x2e9/0x430 [ 103.708380] ? fget_raw+0x20/0x20 [ 103.711829] ? __sb_end_write+0xd9/0x110 [ 103.715881] ? do_syscall_64+0x9a/0x820 [ 103.719942] ? do_syscall_64+0x9a/0x820 [ 103.723902] ? lockdep_hardirqs_on+0x421/0x5c0 [ 103.728467] ? security_file_ioctl+0x94/0xc0 [ 103.732862] ksys_ioctl+0xa9/0xd0 [ 103.736312] __x64_sys_ioctl+0x73/0xb0 [ 103.740194] do_syscall_64+0x1b9/0x820 [ 103.744081] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 103.749426] ? syscall_return_slowpath+0x5e0/0x5e0 [ 103.754344] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 103.759177] ? trace_hardirqs_on_caller+0x310/0x310 [ 103.764180] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 103.769179] ? prepare_exit_to_usermode+0x291/0x3b0 [ 103.774224] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 103.779072] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 103.784242] RIP: 0033:0x441019 executing program [ 103.787546] Code: e8 0c ad 02 00 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 bb 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 103.806441] RSP: 002b:00007ffe025ca528 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 103.814130] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441019 [ 103.821403] RDX: 0000000020000080 RSI: 0000000000005423 RDI: 0000000000000004 [ 103.828676] RBP: 00007ffe025ca540 R08: 0000000000000001 R09: 0000000000000000 [ 103.835937] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 103.843203] R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 [ 103.855849] FAULT_INJECTION: forcing a failure. [ 103.855849] name failslab, interval 1, probability 0, space 0, times 0 [ 103.867337] CPU: 1 PID: 7892 Comm: syz-executor609 Not tainted 4.20.0 #387 [ 103.874338] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 103.883668] Call Trace: [ 103.886257] dump_stack+0x1d3/0x2c6 [ 103.889871] ? dump_stack_print_info.cold.1+0x20/0x20 [ 103.895063] ? find_held_lock+0x36/0x1c0 [ 103.899111] should_fail.cold.4+0xa/0x17 [ 103.903157] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 103.908254] ? graph_lock+0x270/0x270 [ 103.912041] ? print_usage_bug+0xc0/0xc0 [ 103.916089] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 103.921108] ? pcpu_next_fit_region.constprop.20+0x334/0x410 [ 103.926892] ? kasan_check_write+0x14/0x20 [ 103.931124] ? __mutex_unlock_slowpath+0x197/0x8c0 [ 103.936037] ? graph_lock+0x270/0x270 [ 103.939817] ? wait_for_completion+0x8a0/0x8a0 [ 103.944383] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 103.949902] ? check_preemption_disabled+0x48/0x280 [ 103.954905] ? __lock_is_held+0xb5/0x140 [ 103.959051] __should_failslab+0x124/0x180 [ 103.963279] should_failslab+0x9/0x14 [ 103.967069] kmem_cache_alloc_trace+0x4b/0x750 [ 103.971643] __hw_addr_create_ex+0xb2/0x3f0 [ 103.975947] ? dev_mc_init+0x170/0x170 [ 103.979822] __hw_addr_add_ex+0x1ef/0x2b0 [ 103.983959] dev_addr_init+0x169/0x260 [ 103.987848] ? __hw_addr_add_ex+0x2b0/0x2b0 [ 103.992156] ? kasan_unpoison_shadow+0x35/0x50 [ 103.996727] ? kasan_kmalloc+0xc7/0xe0 [ 104.000600] ? __kmalloc_node+0x50/0x70 [ 104.004558] alloc_netdev_mqs+0x21b/0xfe0 [ 104.008692] ? number+0x972/0xca0 [ 104.012130] ? x25_asy_connected+0x270/0x270 [ 104.016521] ? free_netdev+0x450/0x450 [ 104.020391] ? put_dec+0xf0/0xf0 [ 104.023824] ? format_decode+0x1b2/0xaf0 [ 104.028070] ? enable_ptr_key_workfn+0x30/0x30 [ 104.032637] ? graph_lock+0x270/0x270 [ 104.036424] ? trace_hardirqs_off+0xb8/0x310 [ 104.040821] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 104.046357] ? vsnprintf+0x20d/0x1b60 [ 104.050168] ? pointer+0x900/0x900 [ 104.053713] ? sprintf+0xb0/0xe0 [ 104.057086] ? scnprintf+0x130/0x130 [ 104.060795] ? __kasan_slab_free+0x119/0x150 [ 104.065194] x25_asy_open_tty+0x551/0x7e7 [ 104.069340] ? x25_asy_close_tty+0x220/0x220 [ 104.073732] ? down_write_nested+0x130/0x130 [ 104.078137] ? down_read+0x120/0x120 [ 104.081841] ? x25_asy_close_tty+0x220/0x220 [ 104.086233] tty_ldisc_open.isra.1+0x8b/0xe0 [ 104.090626] tty_set_ldisc+0x2dc/0x6a0 [ 104.094498] tty_ioctl+0x39d/0x17d0 [ 104.098108] ? tty_vhangup+0x30/0x30 [ 104.101810] ? get_pid_task+0xd6/0x1a0 [ 104.105696] ? lock_downgrade+0x900/0x900 [ 104.109827] ? check_preemption_disabled+0x48/0x280 [ 104.114829] ? rcu_read_unlock_special+0x1d0/0x1d0 [ 104.119753] ? kasan_check_read+0x11/0x20 [ 104.123886] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 104.129143] ? rcu_softirq_qs+0x20/0x20 [ 104.133103] ? find_vpid+0xf0/0xf0 [ 104.136660] ? graph_lock+0x270/0x270 [ 104.140445] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 104.145979] ? proc_fail_nth_write+0x9e/0x210 [ 104.150453] ? proc_cwd_link+0x1d0/0x1d0 [ 104.154566] ? trace_hardirqs_off+0xb8/0x310 [ 104.158984] ? find_held_lock+0x36/0x1c0 [ 104.163035] ? vfs_write+0x2f3/0x560 [ 104.166733] ? tty_vhangup+0x30/0x30 [ 104.170432] do_vfs_ioctl+0x1de/0x1790 [ 104.174320] ? __lock_is_held+0xb5/0x140 [ 104.178366] ? ioctl_preallocate+0x300/0x300 [ 104.182757] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 104.188403] ? __fget_light+0x2e9/0x430 [ 104.192371] ? fget_raw+0x20/0x20 [ 104.195812] ? __sb_end_write+0xd9/0x110 [ 104.199860] ? do_syscall_64+0x9a/0x820 [ 104.203816] ? do_syscall_64+0x9a/0x820 [ 104.207774] ? lockdep_hardirqs_on+0x421/0x5c0 [ 104.212342] ? security_file_ioctl+0x94/0xc0 [ 104.216735] ksys_ioctl+0xa9/0xd0 [ 104.220181] __x64_sys_ioctl+0x73/0xb0 [ 104.224052] do_syscall_64+0x1b9/0x820 [ 104.227923] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 104.233269] ? syscall_return_slowpath+0x5e0/0x5e0 [ 104.238186] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 104.243013] ? trace_hardirqs_on_caller+0x310/0x310 [ 104.248027] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 104.253027] ? prepare_exit_to_usermode+0x291/0x3b0 [ 104.258043] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 104.262888] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 104.268180] RIP: 0033:0x441019 [ 104.271372] Code: e8 0c ad 02 00 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 bb 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 104.290321] RSP: 002b:00007ffe025ca528 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 104.298017] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441019 executing program [ 104.305310] RDX: 0000000020000080 RSI: 0000000000005423 RDI: 0000000000000004 [ 104.312567] RBP: 00007ffe025ca540 R08: 0000000000000001 R09: 0000000000000000 [ 104.319821] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 104.327073] R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 [ 104.340695] FAULT_INJECTION: forcing a failure. [ 104.340695] name failslab, interval 1, probability 0, space 0, times 0 [ 104.351963] CPU: 1 PID: 7893 Comm: syz-executor609 Not tainted 4.20.0 #387 [ 104.359066] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 104.368402] Call Trace: [ 104.370978] dump_stack+0x1d3/0x2c6 [ 104.374592] ? dump_stack_print_info.cold.1+0x20/0x20 [ 104.379766] ? find_held_lock+0x36/0x1c0 [ 104.383834] should_fail.cold.4+0xa/0x17 [ 104.387894] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 104.392979] ? graph_lock+0x270/0x270 [ 104.396764] ? print_usage_bug+0xc0/0xc0 [ 104.400819] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 104.405827] ? pcpu_next_fit_region.constprop.20+0x334/0x410 [ 104.411611] ? kasan_check_write+0x14/0x20 [ 104.415861] ? __mutex_unlock_slowpath+0x197/0x8c0 [ 104.420790] ? graph_lock+0x270/0x270 [ 104.424574] ? wait_for_completion+0x8a0/0x8a0 [ 104.429142] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 104.434793] ? check_preemption_disabled+0x48/0x280 [ 104.439803] ? __lock_is_held+0xb5/0x140 [ 104.443859] __should_failslab+0x124/0x180 [ 104.448086] should_failslab+0x9/0x14 [ 104.451874] kmem_cache_alloc_trace+0x4b/0x750 [ 104.456453] __hw_addr_create_ex+0xb2/0x3f0 [ 104.460758] ? dev_mc_init+0x170/0x170 [ 104.464633] __hw_addr_add_ex+0x1ef/0x2b0 [ 104.468812] dev_addr_init+0x169/0x260 [ 104.472699] ? __hw_addr_add_ex+0x2b0/0x2b0 [ 104.477002] ? kasan_unpoison_shadow+0x35/0x50 [ 104.481568] ? kasan_kmalloc+0xc7/0xe0 [ 104.485443] ? __kmalloc_node+0x50/0x70 [ 104.489402] alloc_netdev_mqs+0x21b/0xfe0 [ 104.493534] ? number+0x972/0xca0 [ 104.496977] ? x25_asy_connected+0x270/0x270 [ 104.501370] ? free_netdev+0x450/0x450 [ 104.505242] ? put_dec+0xf0/0xf0 [ 104.508606] ? format_decode+0x1b2/0xaf0 [ 104.512652] ? enable_ptr_key_workfn+0x30/0x30 [ 104.517217] ? graph_lock+0x270/0x270 [ 104.521009] ? trace_hardirqs_off+0xb8/0x310 [ 104.525403] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 104.531112] ? vsnprintf+0x20d/0x1b60 [ 104.534899] ? pointer+0x900/0x900 [ 104.538429] ? sprintf+0xb0/0xe0 [ 104.541780] ? scnprintf+0x130/0x130 [ 104.545497] ? __kasan_slab_free+0x119/0x150 [ 104.549897] x25_asy_open_tty+0x551/0x7e7 [ 104.554067] ? x25_asy_close_tty+0x220/0x220 [ 104.558463] ? down_write_nested+0x130/0x130 [ 104.562861] ? down_read+0x120/0x120 [ 104.566577] ? x25_asy_close_tty+0x220/0x220 [ 104.571003] tty_ldisc_open.isra.1+0x8b/0xe0 [ 104.576199] tty_set_ldisc+0x2dc/0x6a0 [ 104.580158] tty_ioctl+0x39d/0x17d0 [ 104.586710] ? tty_vhangup+0x30/0x30 [ 104.590415] ? get_pid_task+0xd6/0x1a0 [ 104.594288] ? lock_downgrade+0x900/0x900 [ 104.598419] ? check_preemption_disabled+0x48/0x280 [ 104.603437] ? rcu_read_unlock_special+0x1d0/0x1d0 [ 104.608354] ? kasan_check_read+0x11/0x20 [ 104.612489] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 104.617754] ? rcu_softirq_qs+0x20/0x20 [ 104.621714] ? find_vpid+0xf0/0xf0 [ 104.625244] ? graph_lock+0x270/0x270 [ 104.629038] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 104.634572] ? proc_fail_nth_write+0x9e/0x210 [ 104.639053] ? proc_cwd_link+0x1d0/0x1d0 [ 104.643126] ? trace_hardirqs_off+0xb8/0x310 [ 104.647533] ? find_held_lock+0x36/0x1c0 [ 104.651600] ? vfs_write+0x2f3/0x560 [ 104.655302] ? tty_vhangup+0x30/0x30 [ 104.659003] do_vfs_ioctl+0x1de/0x1790 [ 104.662874] ? __lock_is_held+0xb5/0x140 [ 104.666920] ? ioctl_preallocate+0x300/0x300 [ 104.671333] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 104.676856] ? __fget_light+0x2e9/0x430 [ 104.680816] ? fget_raw+0x20/0x20 [ 104.684258] ? __sb_end_write+0xd9/0x110 [ 104.688306] ? do_syscall_64+0x9a/0x820 [ 104.692269] ? do_syscall_64+0x9a/0x820 [ 104.696301] ? lockdep_hardirqs_on+0x421/0x5c0 [ 104.700873] ? security_file_ioctl+0x94/0xc0 [ 104.705268] ksys_ioctl+0xa9/0xd0 [ 104.708709] __x64_sys_ioctl+0x73/0xb0 [ 104.712585] do_syscall_64+0x1b9/0x820 [ 104.716462] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 104.721825] ? syscall_return_slowpath+0x5e0/0x5e0 [ 104.726736] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 104.731563] ? trace_hardirqs_on_caller+0x310/0x310 [ 104.736580] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 104.741583] ? prepare_exit_to_usermode+0x291/0x3b0 [ 104.746604] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 104.751455] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 104.756629] RIP: 0033:0x441019 [ 104.759853] Code: e8 0c ad 02 00 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 bb 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 104.778737] RSP: 002b:00007ffe025ca528 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 104.786425] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441019 [ 104.793675] RDX: 0000000020000080 RSI: 0000000000005423 RDI: 0000000000000004 [ 104.800926] RBP: 00007ffe025ca540 R08: 0000000000000001 R09: 0000000000000000 executing program [ 104.808198] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 104.815453] R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 [ 104.832111] FAULT_INJECTION: forcing a failure. [ 104.832111] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 104.843946] CPU: 1 PID: 7894 Comm: syz-executor609 Not tainted 4.20.0 #387 [ 104.850945] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 104.860282] Call Trace: [ 104.862858] dump_stack+0x1d3/0x2c6 [ 104.866477] ? dump_stack_print_info.cold.1+0x20/0x20 [ 104.871658] should_fail.cold.4+0xa/0x17 [ 104.875707] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 104.880840] ? __lock_acquire+0x62f/0x4c20 [ 104.885066] ? mark_held_locks+0x130/0x130 [ 104.889290] ? mark_held_locks+0x130/0x130 [ 104.893514] ? mark_held_locks+0x130/0x130 [ 104.897750] ? print_usage_bug+0xc0/0xc0 [ 104.901795] ? print_usage_bug+0xc0/0xc0 [ 104.905843] ? ima_match_policy+0x848/0x1560 [ 104.910268] ? print_usage_bug+0xc0/0xc0 [ 104.914316] ? check_preemption_disabled+0x48/0x280 [ 104.919320] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 104.924849] ? should_fail+0x22d/0xd01 [ 104.928759] ? __lock_acquire+0x62f/0x4c20 [ 104.932980] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 104.938078] __alloc_pages_nodemask+0x366/0xea0 [ 104.942734] ? __lock_acquire+0x62f/0x4c20 [ 104.946961] ? graph_lock+0x270/0x270 [ 104.950752] ? __alloc_pages_slowpath+0x2df0/0x2df0 [ 104.955793] ? find_held_lock+0x36/0x1c0 [ 104.959849] ? ___might_sleep+0x1ed/0x300 [ 104.963987] ? trace_hardirqs_off+0xb8/0x310 [ 104.968390] cache_grow_begin+0x91/0x8c0 [ 104.972444] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 104.977979] ? check_preemption_disabled+0x48/0x280 [ 104.982999] kmem_cache_alloc_node_trace+0x670/0x740 [ 104.988086] ? is_bpf_text_address+0xd3/0x170 [ 104.992661] ? kernel_text_address+0x79/0xf0 [ 104.997061] __kmalloc_node+0x3c/0x70 [ 105.000850] kvmalloc_node+0x65/0xf0 [ 105.004565] alloc_netdev_mqs+0x17b/0xfe0 [ 105.008699] ? number+0x972/0xca0 [ 105.012154] ? x25_asy_connected+0x270/0x270 [ 105.016574] ? free_netdev+0x450/0x450 [ 105.020448] ? put_dec+0xf0/0xf0 [ 105.023798] ? format_decode+0x1b2/0xaf0 [ 105.027847] ? enable_ptr_key_workfn+0x30/0x30 [ 105.032414] ? graph_lock+0x270/0x270 [ 105.036212] ? trace_hardirqs_off+0xb8/0x310 [ 105.040626] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 105.046175] ? vsnprintf+0x20d/0x1b60 [ 105.049968] ? pointer+0x900/0x900 [ 105.053532] ? sprintf+0xb0/0xe0 [ 105.056886] ? scnprintf+0x130/0x130 [ 105.060616] ? __kasan_slab_free+0x119/0x150 [ 105.065034] x25_asy_open_tty+0x551/0x7e7 [ 105.069183] ? x25_asy_close_tty+0x220/0x220 [ 105.073578] ? down_write_nested+0x130/0x130 [ 105.077974] ? down_read+0x120/0x120 [ 105.081692] ? x25_asy_close_tty+0x220/0x220 [ 105.086098] tty_ldisc_open.isra.1+0x8b/0xe0 [ 105.090537] tty_set_ldisc+0x2dc/0x6a0 [ 105.094414] tty_ioctl+0x39d/0x17d0 [ 105.098032] ? tty_vhangup+0x30/0x30 [ 105.101736] ? get_pid_task+0xd6/0x1a0 [ 105.105634] ? lock_downgrade+0x900/0x900 [ 105.109768] ? check_preemption_disabled+0x48/0x280 [ 105.114789] ? rcu_read_unlock_special+0x1d0/0x1d0 [ 105.119720] ? kasan_check_read+0x11/0x20 [ 105.123855] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 105.129115] ? rcu_softirq_qs+0x20/0x20 [ 105.133077] ? find_vpid+0xf0/0xf0 [ 105.136606] ? graph_lock+0x270/0x270 [ 105.140397] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 105.145922] ? proc_fail_nth_write+0x9e/0x210 [ 105.150406] ? proc_cwd_link+0x1d0/0x1d0 [ 105.154458] ? trace_hardirqs_off+0xb8/0x310 [ 105.158871] ? find_held_lock+0x36/0x1c0 [ 105.162962] ? vfs_write+0x2f3/0x560 [ 105.166668] ? tty_vhangup+0x30/0x30 [ 105.170388] do_vfs_ioctl+0x1de/0x1790 [ 105.174326] ? __lock_is_held+0xb5/0x140 [ 105.178393] ? ioctl_preallocate+0x300/0x300 [ 105.182789] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.188314] ? __fget_light+0x2e9/0x430 [ 105.192275] ? fget_raw+0x20/0x20 [ 105.195717] ? __sb_end_write+0xd9/0x110 [ 105.199785] ? do_syscall_64+0x9a/0x820 [ 105.203756] ? do_syscall_64+0x9a/0x820 [ 105.207718] ? lockdep_hardirqs_on+0x421/0x5c0 [ 105.212293] ? security_file_ioctl+0x94/0xc0 [ 105.216706] ksys_ioctl+0xa9/0xd0 [ 105.220171] __x64_sys_ioctl+0x73/0xb0 [ 105.224046] do_syscall_64+0x1b9/0x820 [ 105.227920] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 105.233275] ? syscall_return_slowpath+0x5e0/0x5e0 [ 105.238205] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 105.243063] ? trace_hardirqs_on_caller+0x310/0x310 [ 105.248065] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 105.253088] ? prepare_exit_to_usermode+0x291/0x3b0 [ 105.258105] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 105.262940] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 105.268113] RIP: 0033:0x441019 [ 105.271292] Code: e8 0c ad 02 00 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 bb 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 105.290189] RSP: 002b:00007ffe025ca528 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 105.297883] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441019 [ 105.305138] RDX: 0000000020000080 RSI: 0000000000005423 RDI: 0000000000000004 executing program [ 105.312414] RBP: 00007ffe025ca540 R08: 0000000000000001 R09: 0000000000000000 [ 105.319670] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 105.326923] R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 [ 105.348113] FAULT_INJECTION: forcing a failure. [ 105.348113] name failslab, interval 1, probability 0, space 0, times 0 [ 105.359659] CPU: 0 PID: 7895 Comm: syz-executor609 Not tainted 4.20.0 #387 [ 105.366685] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 105.376053] Call Trace: [ 105.378655] dump_stack+0x1d3/0x2c6 [ 105.382314] ? dump_stack_print_info.cold.1+0x20/0x20 [ 105.387523] ? __kernel_text_address+0xd/0x40 [ 105.392039] ? unwind_get_return_address+0x61/0xa0 [ 105.396980] should_fail.cold.4+0xa/0x17 [ 105.401050] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 105.406191] ? save_stack+0x43/0xd0 [ 105.409823] ? kasan_kmalloc+0xc7/0xe0 [ 105.413714] ? __kmalloc+0x15b/0x770 [ 105.417442] ? x25_asy_open_tty+0x32a/0x7e7 [ 105.421785] ? tty_ldisc_open.isra.1+0x8b/0xe0 [ 105.426393] ? graph_lock+0x270/0x270 [ 105.430205] ? ksys_ioctl+0xa9/0xd0 [ 105.433837] ? __x64_sys_ioctl+0x73/0xb0 [ 105.437915] ? do_syscall_64+0x1b9/0x820 [ 105.441996] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 105.447372] ? __mutex_unlock_slowpath+0x197/0x8c0 [ 105.452315] ? find_held_lock+0x36/0x1c0 [ 105.456404] ? __lock_is_held+0xb5/0x140 [ 105.460519] ? ___might_sleep+0x1ed/0x300 [ 105.464677] ? arch_local_save_flags+0x40/0x40 [ 105.469288] __should_failslab+0x124/0x180 [ 105.473555] should_failslab+0x9/0x14 [ 105.477360] __kmalloc+0x2e0/0x770 [ 105.480908] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.486472] ? x25_asy_open_tty+0x372/0x7e7 [ 105.490854] x25_asy_open_tty+0x372/0x7e7 [ 105.495238] ? x25_asy_close_tty+0x220/0x220 [ 105.499649] ? up_write+0x7b/0x220 [ 105.503232] ? down_write_nested+0x130/0x130 [ 105.507644] ? down_read+0x120/0x120 [ 105.511377] ? x25_asy_close_tty+0x220/0x220 [ 105.515806] tty_ldisc_open.isra.1+0x8b/0xe0 [ 105.520235] tty_set_ldisc+0x2dc/0x6a0 [ 105.524149] tty_ioctl+0x39d/0x17d0 [ 105.527784] ? tty_vhangup+0x30/0x30 [ 105.531497] ? get_pid_task+0xd6/0x1a0 [ 105.535393] ? lock_downgrade+0x900/0x900 [ 105.539526] ? check_preemption_disabled+0x48/0x280 [ 105.544543] ? rcu_read_unlock_special+0x1d0/0x1d0 [ 105.549461] ? kasan_check_read+0x11/0x20 [ 105.553641] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 105.558901] ? rcu_softirq_qs+0x20/0x20 [ 105.562857] ? find_vpid+0xf0/0xf0 [ 105.566382] ? graph_lock+0x270/0x270 [ 105.570194] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 105.575718] ? proc_fail_nth_write+0x9e/0x210 [ 105.580197] ? proc_cwd_link+0x1d0/0x1d0 [ 105.584253] ? trace_hardirqs_off+0xb8/0x310 [ 105.588648] ? find_held_lock+0x36/0x1c0 [ 105.592730] ? vfs_write+0x2f3/0x560 [ 105.596429] ? tty_vhangup+0x30/0x30 [ 105.600147] do_vfs_ioctl+0x1de/0x1790 [ 105.604069] ? __lock_is_held+0xb5/0x140 [ 105.608115] ? ioctl_preallocate+0x300/0x300 [ 105.612507] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.618027] ? __fget_light+0x2e9/0x430 [ 105.622011] ? fget_raw+0x20/0x20 [ 105.625461] ? __sb_end_write+0xd9/0x110 [ 105.629514] ? do_syscall_64+0x9a/0x820 [ 105.633471] ? do_syscall_64+0x9a/0x820 [ 105.637426] ? lockdep_hardirqs_on+0x421/0x5c0 [ 105.641996] ? security_file_ioctl+0x94/0xc0 [ 105.646387] ksys_ioctl+0xa9/0xd0 [ 105.649830] __x64_sys_ioctl+0x73/0xb0 [ 105.653714] do_syscall_64+0x1b9/0x820 [ 105.657621] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 105.662987] ? syscall_return_slowpath+0x5e0/0x5e0 [ 105.667901] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 105.672727] ? trace_hardirqs_on_caller+0x310/0x310 [ 105.677727] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 105.682728] ? prepare_exit_to_usermode+0x291/0x3b0 [ 105.687733] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 105.692562] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 105.697738] RIP: 0033:0x441019 [ 105.700946] Code: e8 0c ad 02 00 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 bb 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 105.719831] RSP: 002b:00007ffe025ca528 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 105.727520] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441019 [ 105.734795] RDX: 0000000020000080 RSI: 0000000000005423 RDI: 0000000000000004 [ 105.742048] RBP: 00007ffe025ca540 R08: 0000000000000001 R09: 0000000000000000 [ 105.749301] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 105.756551] R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 [ 105.764847] ================================================================== [ 105.772329] BUG: KASAN: double-free or invalid-free in x25_asy_free+0x37/0x140 [ 105.779703] [ 105.781335] CPU: 0 PID: 7895 Comm: syz-executor609 Not tainted 4.20.0 #387 [ 105.788326] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 105.797726] Call Trace: [ 105.800333] dump_stack+0x1d3/0x2c6 [ 105.803971] ? dump_stack_print_info.cold.1+0x20/0x20 [ 105.809167] ? printk+0xa7/0xcf [ 105.812443] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 105.817203] ? debug_check_no_obj_freed+0x305/0x58d [ 105.822210] print_address_description.cold.8+0x9/0x1ff [ 105.827579] ? x25_asy_free+0x37/0x140 [ 105.831467] kasan_report_invalid_free+0x64/0xa0 [ 105.836209] ? x25_asy_free+0x37/0x140 [ 105.840082] __kasan_slab_free+0x13a/0x150 [ 105.844318] ? x25_asy_free+0x37/0x140 [ 105.848201] kasan_slab_free+0xe/0x10 [ 105.851998] kfree+0xcf/0x230 [ 105.855093] x25_asy_free+0x37/0x140 [ 105.858799] x25_asy_open_tty+0x6ad/0x7e7 [ 105.862962] ? x25_asy_close_tty+0x220/0x220 [ 105.867453] ? up_write+0x7b/0x220 [ 105.871010] ? down_write_nested+0x130/0x130 [ 105.875409] ? down_read+0x120/0x120 [ 105.879148] ? x25_asy_close_tty+0x220/0x220 [ 105.883551] tty_ldisc_open.isra.1+0x8b/0xe0 [ 105.887946] tty_set_ldisc+0x2dc/0x6a0 [ 105.891839] tty_ioctl+0x39d/0x17d0 [ 105.895482] ? tty_vhangup+0x30/0x30 [ 105.899219] ? get_pid_task+0xd6/0x1a0 [ 105.903095] ? lock_downgrade+0x900/0x900 [ 105.907232] ? check_preemption_disabled+0x48/0x280 [ 105.912279] ? rcu_read_unlock_special+0x1d0/0x1d0 [ 105.917195] ? kasan_check_read+0x11/0x20 [ 105.921328] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 105.926596] ? rcu_softirq_qs+0x20/0x20 [ 105.930558] ? find_vpid+0xf0/0xf0 [ 105.934109] ? graph_lock+0x270/0x270 [ 105.937901] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 105.943446] ? proc_fail_nth_write+0x9e/0x210 [ 105.947933] ? proc_cwd_link+0x1d0/0x1d0 [ 105.951984] ? trace_hardirqs_off+0xb8/0x310 [ 105.956382] ? find_held_lock+0x36/0x1c0 [ 105.960440] ? vfs_write+0x2f3/0x560 [ 105.964143] ? tty_vhangup+0x30/0x30 [ 105.967872] do_vfs_ioctl+0x1de/0x1790 [ 105.971750] ? __lock_is_held+0xb5/0x140 [ 105.975809] ? ioctl_preallocate+0x300/0x300 [ 105.980229] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.985753] ? __fget_light+0x2e9/0x430 [ 105.989722] ? fget_raw+0x20/0x20 [ 105.993194] ? __sb_end_write+0xd9/0x110 [ 105.997261] ? do_syscall_64+0x9a/0x820 [ 106.001224] ? do_syscall_64+0x9a/0x820 [ 106.005207] ? lockdep_hardirqs_on+0x421/0x5c0 [ 106.009790] ? security_file_ioctl+0x94/0xc0 [ 106.014189] ksys_ioctl+0xa9/0xd0 [ 106.017638] __x64_sys_ioctl+0x73/0xb0 [ 106.021518] do_syscall_64+0x1b9/0x820 [ 106.025397] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 106.030746] ? syscall_return_slowpath+0x5e0/0x5e0 [ 106.035660] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 106.040491] ? trace_hardirqs_on_caller+0x310/0x310 [ 106.045506] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 106.050510] ? prepare_exit_to_usermode+0x291/0x3b0 [ 106.055516] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 106.060367] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 106.065544] RIP: 0033:0x441019 [ 106.068747] Code: e8 0c ad 02 00 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 bb 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 106.087667] RSP: 002b:00007ffe025ca528 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 106.095377] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441019 [ 106.102631] RDX: 0000000020000080 RSI: 0000000000005423 RDI: 0000000000000004 [ 106.109884] RBP: 00007ffe025ca540 R08: 0000000000000001 R09: 0000000000000000 [ 106.117175] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 106.124450] R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 [ 106.131741] [ 106.133382] Allocated by task 7895: [ 106.136995] save_stack+0x43/0xd0 [ 106.140437] kasan_kmalloc+0xc7/0xe0 [ 106.144143] __kmalloc+0x15b/0x770 [ 106.147692] x25_asy_open_tty+0x32a/0x7e7 [ 106.151830] tty_ldisc_open.isra.1+0x8b/0xe0 [ 106.156224] tty_set_ldisc+0x2dc/0x6a0 [ 106.160112] tty_ioctl+0x39d/0x17d0 [ 106.163755] do_vfs_ioctl+0x1de/0x1790 [ 106.167648] ksys_ioctl+0xa9/0xd0 [ 106.171097] __x64_sys_ioctl+0x73/0xb0 [ 106.174971] do_syscall_64+0x1b9/0x820 [ 106.178852] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 106.184035] [ 106.185645] Freed by task 7895: [ 106.188932] save_stack+0x43/0xd0 [ 106.192378] __kasan_slab_free+0x102/0x150 [ 106.196610] kasan_slab_free+0xe/0x10 [ 106.200396] kfree+0xcf/0x230 [ 106.203487] x25_asy_open_tty+0x6a0/0x7e7 [ 106.207620] tty_ldisc_open.isra.1+0x8b/0xe0 [ 106.212014] tty_set_ldisc+0x2dc/0x6a0 [ 106.215887] tty_ioctl+0x39d/0x17d0 [ 106.219517] do_vfs_ioctl+0x1de/0x1790 [ 106.223391] ksys_ioctl+0xa9/0xd0 [ 106.226860] __x64_sys_ioctl+0x73/0xb0 [ 106.230741] do_syscall_64+0x1b9/0x820 [ 106.234622] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 106.239796] [ 106.241412] The buggy address belongs to the object at ffff8881b68c4480 [ 106.241412] which belongs to the cache kmalloc-1k of size 1024 [ 106.254079] The buggy address is located 0 bytes inside of [ 106.254079] 1024-byte region [ffff8881b68c4480, ffff8881b68c4880) [ 106.265893] The buggy address belongs to the page: [ 106.270816] page:ffffea0006da3100 count:1 mapcount:0 mapping:ffff8881da800ac0 index:0x0 compound_mapcount: 0 [ 106.280787] flags: 0x2fffc0000010200(slab|head) [ 106.285459] raw: 02fffc0000010200 ffffea0007632608 ffff8881da801848 ffff8881da800ac0 [ 106.293322] raw: 0000000000000000 ffff8881b68c4000 0000000100000007 0000000000000000 [ 106.301198] page dumped because: kasan: bad access detected [ 106.306886] [ 106.308503] Memory state around the buggy address: [ 106.313425] ffff8881b68c4380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 106.320794] ffff8881b68c4400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 106.328170] >ffff8881b68c4480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 106.335507] ^ [ 106.338853] ffff8881b68c4500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 106.346209] ffff8881b68c4580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 106.353550] ================================================================== [ 106.360888] Disabling lock debugging due to kernel taint [ 106.366320] Kernel panic - not syncing: panic_on_warn set ... [ 106.372218] CPU: 0 PID: 7895 Comm: syz-executor609 Tainted: G B 4.20.0 #387 [ 106.380600] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 106.389948] Call Trace: [ 106.392554] dump_stack+0x1d3/0x2c6 [ 106.396224] ? dump_stack_print_info.cold.1+0x20/0x20 [ 106.401429] ? x25_asy_data_transmit+0x620/0x6e0 [ 106.406197] panic+0x2ad/0x55c [ 106.409374] ? add_taint.cold.5+0x16/0x16 [ 106.413512] ? add_taint.cold.5+0x5/0x16 [ 106.417579] ? trace_hardirqs_off+0xaf/0x310 [ 106.421994] ? x25_asy_free+0x37/0x140 [ 106.425881] kasan_end_report+0x47/0x4f [ 106.429838] kasan_report_invalid_free+0x81/0xa0 [ 106.434577] ? x25_asy_free+0x37/0x140 [ 106.438463] __kasan_slab_free+0x13a/0x150 [ 106.442692] ? x25_asy_free+0x37/0x140 [ 106.446563] kasan_slab_free+0xe/0x10 [ 106.450379] kfree+0xcf/0x230 [ 106.453469] x25_asy_free+0x37/0x140 [ 106.457173] x25_asy_open_tty+0x6ad/0x7e7 [ 106.461324] ? x25_asy_close_tty+0x220/0x220 [ 106.465714] ? up_write+0x7b/0x220 [ 106.469237] ? down_write_nested+0x130/0x130 [ 106.473641] ? down_read+0x120/0x120 [ 106.477347] ? x25_asy_close_tty+0x220/0x220 [ 106.481741] tty_ldisc_open.isra.1+0x8b/0xe0 [ 106.486133] tty_set_ldisc+0x2dc/0x6a0 [ 106.490007] tty_ioctl+0x39d/0x17d0 [ 106.493617] ? tty_vhangup+0x30/0x30 [ 106.497315] ? get_pid_task+0xd6/0x1a0 [ 106.501228] ? lock_downgrade+0x900/0x900 [ 106.505360] ? check_preemption_disabled+0x48/0x280 [ 106.510362] ? rcu_read_unlock_special+0x1d0/0x1d0 [ 106.515272] ? kasan_check_read+0x11/0x20 [ 106.519404] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 106.524666] ? rcu_softirq_qs+0x20/0x20 [ 106.528636] ? find_vpid+0xf0/0xf0 [ 106.532172] ? graph_lock+0x270/0x270 [ 106.535959] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 106.541479] ? proc_fail_nth_write+0x9e/0x210 [ 106.545957] ? proc_cwd_link+0x1d0/0x1d0 [ 106.550004] ? trace_hardirqs_off+0xb8/0x310 [ 106.554397] ? find_held_lock+0x36/0x1c0 [ 106.558450] ? vfs_write+0x2f3/0x560 [ 106.562148] ? tty_vhangup+0x30/0x30 [ 106.565869] do_vfs_ioctl+0x1de/0x1790 [ 106.569741] ? __lock_is_held+0xb5/0x140 [ 106.573805] ? ioctl_preallocate+0x300/0x300 [ 106.578201] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 106.583747] ? __fget_light+0x2e9/0x430 [ 106.587723] ? fget_raw+0x20/0x20 [ 106.591168] ? __sb_end_write+0xd9/0x110 [ 106.595215] ? do_syscall_64+0x9a/0x820 [ 106.599178] ? do_syscall_64+0x9a/0x820 [ 106.603141] ? lockdep_hardirqs_on+0x421/0x5c0 [ 106.607718] ? security_file_ioctl+0x94/0xc0 [ 106.612125] ksys_ioctl+0xa9/0xd0 [ 106.615568] __x64_sys_ioctl+0x73/0xb0 [ 106.619447] do_syscall_64+0x1b9/0x820 [ 106.623318] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 106.628819] ? syscall_return_slowpath+0x5e0/0x5e0 [ 106.633742] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 106.638582] ? trace_hardirqs_on_caller+0x310/0x310 [ 106.643583] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 106.648601] ? prepare_exit_to_usermode+0x291/0x3b0 [ 106.653604] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 106.658433] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 106.663626] RIP: 0033:0x441019 [ 106.666804] Code: e8 0c ad 02 00 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 bb 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 106.685686] RSP: 002b:00007ffe025ca528 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 106.693393] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441019 [ 106.700670] RDX: 0000000020000080 RSI: 0000000000005423 RDI: 0000000000000004 [ 106.707933] RBP: 00007ffe025ca540 R08: 0000000000000001 R09: 0000000000000000 [ 106.715189] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 106.722445] R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 [ 106.730787] Kernel Offset: disabled [ 106.734414] Rebooting in 86400 seconds..