[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.240' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 197.973049] hrtimer: interrupt took 57956 ns [ 197.974424] netlink: 12 bytes leftover after parsing attributes in process `syz-executor449'. executing program [ 198.064733] netlink: 12 bytes leftover after parsing attributes in process `syz-executor449'. executing program [ 198.136865] netlink: 12 bytes leftover after parsing attributes in process `syz-executor449'. executing program [ 198.222871] netlink: 12 bytes leftover after parsing attributes in process `syz-executor449'. executing program [ 198.307147] netlink: 12 bytes leftover after parsing attributes in process `syz-executor449'. executing program [ 198.366853] netlink: 12 bytes leftover after parsing attributes in process `syz-executor449'. executing program [ 198.427768] netlink: 12 bytes leftover after parsing attributes in process `syz-executor449'. executing program [ 198.607985] netlink: 12 bytes leftover after parsing attributes in process `syz-executor449'. executing program [ 198.822053] netlink: 12 bytes leftover after parsing attributes in process `syz-executor449'. executing program [ 198.925883] netlink: 12 bytes leftover after parsing attributes in process `syz-executor449'. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 202.995283] nla_parse: 28 callbacks suppressed [ 202.995328] netlink: 12 bytes leftover after parsing attributes in process `syz-executor449'. [ 203.060667] ================================================================== [ 203.068143] BUG: KASAN: stack-out-of-bounds in unwind_next_frame+0x142e/0x17d0 [ 203.075489] Read of size 8 at addr ffff8880a331ef68 by task syz-executor449/8558 [ 203.083011] [ 203.084632] CPU: 1 PID: 8558 Comm: syz-executor449 Not tainted 4.14.253-syzkaller #0 [ 203.092501] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 203.101838] Call Trace: [ 203.104398] [ 203.106524] dump_stack+0x1b2/0x281 [ 203.110166] print_address_description.cold+0x54/0x1d3 [ 203.115466] kasan_report_error.cold+0x8a/0x191 [ 203.120110] ? unwind_next_frame+0x142e/0x17d0 [ 203.124700] __asan_report_load8_noabort+0x68/0x70 [ 203.129604] ? unwind_next_frame+0x142e/0x17d0 [ 203.134159] unwind_next_frame+0x142e/0x17d0 [ 203.138539] ? retint_kernel+0x2d/0x2d [ 203.142408] ? deref_stack_reg+0x1a0/0x1a0 [ 203.146616] ? check_preemption_disabled+0x35/0x240 [ 203.151638] ? retint_kernel+0x2d/0x2d [ 203.155501] perf_callchain_kernel+0x38c/0x520 [ 203.160059] ? arch_perf_update_userpage+0x300/0x300 [ 203.165135] ? kernfs_activate+0x2a/0x180 [ 203.169270] ? check_preemption_disabled+0x35/0x240 [ 203.174262] get_perf_callchain+0x2de/0x740 [ 203.178556] ? put_callchain_buffers+0x60/0x60 [ 203.183109] ? kvm_clock_read+0x1f/0x30 [ 203.187054] ? kvm_sched_clock_read+0x5/0x10 [ 203.191435] ? sched_clock+0x2a/0x40 [ 203.195124] ? sched_clock_cpu+0x18/0x1b0 [ 203.199245] perf_callchain+0x147/0x190 [ 203.203194] perf_prepare_sample+0xd77/0x1380 [ 203.207663] ? lock_acquire+0x170/0x3f0 [ 203.211614] ? perf_output_sample+0x16f0/0x16f0 [ 203.216254] ? check_preemption_disabled+0x35/0x240 [ 203.221299] perf_event_output_forward+0xc9/0x1f0 [ 203.226159] ? perf_prepare_sample+0x1380/0x1380 [ 203.230893] ? __lock_acquire+0x5fc/0x3f20 [ 203.235108] ? check_preemption_disabled+0x35/0x240 [ 203.240104] ? check_preemption_disabled+0x35/0x240 [ 203.245132] __perf_event_overflow+0x113/0x310 [ 203.249690] perf_swevent_hrtimer+0x220/0x350 [ 203.254163] ? __perf_event_overflow+0x310/0x310 [ 203.258894] ? debug_object_deactivate+0x1da/0x2e0 [ 203.263799] ? lock_acquire+0x170/0x3f0 [ 203.267747] ? lock_downgrade+0x740/0x740 [ 203.271873] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 203.276982] ? __hrtimer_run_queues+0x2c5/0xc80 [ 203.281626] ? clockevents_program_event+0x108/0x2d0 [ 203.286709] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 203.292144] __hrtimer_run_queues+0x30b/0xc80 [ 203.296655] ? __perf_event_overflow+0x310/0x310 [ 203.301383] ? retrigger_next_event+0x310/0x310 [ 203.306024] ? ktime_get_update_offsets_now+0x272/0x3f0 [ 203.311362] hrtimer_interrupt+0x1e6/0x5e0 [ 203.315576] smp_apic_timer_interrupt+0x117/0x5e0 [ 203.320399] apic_timer_interrupt+0x93/0xa0 [ 203.324697] [ 203.326923] RIP: 0010:lock_acquire+0x97/0x3f0 [ 203.331394] RSP: 0018:ffff8880a331ee50 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 [ 203.339074] RAX: 1ffffffff11e1270 RBX: ffff8880a63c2480 RCX: 0000000000000000 [ 203.346315] RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff8880a63c2d04 [ 203.353564] RBP: ffffffff8904ade0 R08: 0000000000000001 R09: 0000000000000000 [ 203.360812] R10: 0000000000000000 R11: ffff8880a63c2480 R12: 0000000000000000 [ 203.368055] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 [ 203.375318] kernfs_activate+0x2a/0x180 [ 203.379269] ? __mutex_lock+0xc4/0x1310 [ 203.383218] ? kernfs_activate+0x2a/0x180 [ 203.387342] ? mark_held_locks+0xa6/0xf0 [ 203.391375] retint_kernel+0x2d/0x2d [ 203.395062] RIP: 0000:0xffff8880a63c2cd4 [ 203.399093] RSP: 8904ad80:dffffc0000000000 EFLAGS: ffffffff87400976 ORIG_RAX: ffffffff00000001 [ 203.407814] RAX: ffffffff8722bd30 RBX: ffffffff81a33f2a RCX: 0000000041b58ab3 [ 203.415058] RDX: ffffffff88b5b58c RSI: ffffffff8141ca30 RDI: 0000000000000000 [ 203.422306] RBP: ffffffff8904ade0 R08: ffffffff88b5b250 R09: 0000000041b58ab3 [ 203.429556] R10: 0000000000000282 R11: 0000000000000002 R12: ffffffff81a342de [ 203.436803] R13: ffffffff8904ade0 R14: 1ffff11014663de5 R15: 1ffff11014663de2 [ 203.444052] ? kernfs_add_one+0x25e/0x3a0 [ 203.448174] ? kernfs_activate+0x2a/0x180 [ 203.452298] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 203.457729] ? lock_downgrade+0x740/0x740 [ 203.461860] ? retint_kernel+0x2d/0x2d [ 203.465722] ? __mutex_unlock_slowpath+0x75/0x770 [ 203.470539] ? kernfs_activate+0x2a/0x180 [ 203.474663] ? kernfs_add_one+0x2e5/0x3a0 [ 203.478783] ? kernfs_get+0x44/0x60 [ 203.482383] ? __kernfs_create_file+0x27a/0x320 [ 203.487026] ? sysfs_add_file_mode_ns+0x1e1/0x450 [ 203.491849] ? internal_create_group+0x22b/0x710 [ 203.496580] ? sysfs_create_groups+0x92/0x130 [ 203.501049] ? device_add+0x879/0x15c0 [ 203.504909] ? device_is_dependent+0x2a0/0x2a0 [ 203.509468] ? netdev_register_kobject+0x181/0x410 [ 203.514376] ? register_netdevice+0x955/0xe40 [ 203.518848] ? netdev_change_features+0xa0/0xa0 [ 203.523493] ? br_dev_newlink+0x23/0x100 [ 203.527530] ? rtnl_newlink+0xfab/0x1860 [ 203.531568] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 203.536560] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 203.541292] ? retint_kernel+0x2d/0x2d [ 203.545157] ? strcmp+0x3a/0xb0 [ 203.548413] ? rtnl_newlink+0x43d/0x1860 [ 203.552448] ? br_changelink+0x1570/0x1570 [ 203.556657] ? mark_held_locks+0xa6/0xf0 [ 203.560696] ? rtnl_dellink+0x6a0/0x6a0 [ 203.564645] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 203.569635] ? _raw_spin_unlock_irq+0x5a/0x80 [ 203.574127] ? rtnl_dellink+0x6a0/0x6a0 [ 203.578076] ? rtnetlink_rcv_msg+0x3be/0xb10 [ 203.582463] ? rtnl_calcit.isra.0+0x3a0/0x3a0 [ 203.586971] ? __netlink_lookup+0x345/0x5d0 [ 203.591267] ? netlink_rcv_skb+0x125/0x390 [ 203.595509] ? rtnl_calcit.isra.0+0x3a0/0x3a0 [ 203.599975] ? netlink_ack+0x9a0/0x9a0 [ 203.603852] ? netlink_unicast+0x437/0x610 [ 203.608060] ? netlink_sendskb+0xd0/0xd0 [ 203.612094] ? __check_object_size+0x179/0x230 [ 203.616656] ? netlink_sendmsg+0x638/0xb90 [ 203.620868] ? nlmsg_notify+0x1b0/0x1b0 [ 203.624814] ? kernel_recvmsg+0x210/0x210 [ 203.628939] ? security_socket_sendmsg+0x83/0xb0 [ 203.633665] ? nlmsg_notify+0x1b0/0x1b0 [ 203.637616] ? sock_sendmsg+0xb5/0x100 [ 203.641481] ? ___sys_sendmsg+0x6c8/0x800 [ 203.645607] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 203.650335] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 203.655330] ? retint_kernel+0x2d/0x2d [ 203.659192] ? __might_fault+0x104/0x1b0 [ 203.663235] ? lock_acquire+0x170/0x3f0 [ 203.667185] ? lock_downgrade+0x740/0x740 [ 203.671308] ? __might_fault+0x177/0x1b0 [ 203.675342] ? _copy_to_user+0x82/0xd0 [ 203.679200] ? move_addr_to_user+0x13f/0x180 [ 203.683584] ? __fdget+0x167/0x1f0 [ 203.687094] ? sockfd_lookup_light+0xb2/0x160 [ 203.691566] ? __sys_sendmsg+0xa3/0x120 [ 203.695510] ? SyS_shutdown+0x160/0x160 [ 203.699462] ? move_addr_to_kernel+0x60/0x60 [ 203.703847] ? __do_page_fault+0x159/0xad0 [ 203.708053] ? SyS_sendmsg+0x27/0x40 [ 203.711740] ? __sys_sendmsg+0x120/0x120 [ 203.715777] ? do_syscall_64+0x1d5/0x640 [ 203.719819] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 203.725166] [ 203.726769] The buggy address belongs to the page: [ 203.731706] page:ffffea00028cc780 count:0 mapcount:0 mapping: (null) index:0xffff8880a331e6c0 [ 203.741130] flags: 0xfff00000000000() [ 203.744904] raw: 00fff00000000000 0000000000000000 ffff8880a331e6c0 00000000ffffffff [ 203.752756] raw: dead000000000100 dead000000000200 0000000000000000 0000000000000000 [ 203.760607] page dumped because: kasan: bad access detected [ 203.766282] [ 203.767881] Memory state around the buggy address: [ 203.772787] ffff8880a331ee00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 203.780119] ffff8880a331ee80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 203.787452] >ffff8880a331ef00: 00 00 f1 f1 f1 f1 00 00 00 f2 00 00 00 f2 f2 f2 [ 203.794784] ^ [ 203.801508] ffff8880a331ef80: 00 00 00 00 00 f3 f3 f3 f3 f3 00 00 00 00 00 00 [ 203.808842] ffff8880a331f000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 203.816177] ================================================================== [ 203.823537] Disabling lock debugging due to kernel taint [ 203.828986] Kernel panic - not syncing: panic_on_warn set ... [ 203.828986] [ 203.836322] CPU: 1 PID: 8558 Comm: syz-executor449 Tainted: G B 4.14.253-syzkaller #0 [ 203.845386] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 203.854709] Call Trace: [ 203.857264] [ 203.859386] dump_stack+0x1b2/0x281 [ 203.862987] panic+0x1f9/0x42d [ 203.866154] ? add_taint.cold+0x16/0x16 [ 203.870102] ? lock_downgrade+0x740/0x740 [ 203.874220] kasan_end_report+0x43/0x49 [ 203.878164] kasan_report_error.cold+0xa7/0x191 [ 203.882805] ? unwind_next_frame+0x142e/0x17d0 [ 203.887356] __asan_report_load8_noabort+0x68/0x70 [ 203.892256] ? unwind_next_frame+0x142e/0x17d0 [ 203.896808] unwind_next_frame+0x142e/0x17d0 [ 203.901186] ? retint_kernel+0x2d/0x2d [ 203.905045] ? deref_stack_reg+0x1a0/0x1a0 [ 203.909262] ? check_preemption_disabled+0x35/0x240 [ 203.914252] ? retint_kernel+0x2d/0x2d [ 203.918112] perf_callchain_kernel+0x38c/0x520 [ 203.922666] ? arch_perf_update_userpage+0x300/0x300 [ 203.927740] ? kernfs_activate+0x2a/0x180 [ 203.931861] ? check_preemption_disabled+0x35/0x240 [ 203.936850] get_perf_callchain+0x2de/0x740 [ 203.941145] ? put_callchain_buffers+0x60/0x60 [ 203.945698] ? kvm_clock_read+0x1f/0x30 [ 203.949643] ? kvm_sched_clock_read+0x5/0x10 [ 203.954025] ? sched_clock+0x2a/0x40 [ 203.957711] ? sched_clock_cpu+0x18/0x1b0 [ 203.961831] perf_callchain+0x147/0x190 [ 203.965779] perf_prepare_sample+0xd77/0x1380 [ 203.970245] ? lock_acquire+0x170/0x3f0 [ 203.974189] ? perf_output_sample+0x16f0/0x16f0 [ 203.978827] ? check_preemption_disabled+0x35/0x240 [ 203.983818] perf_event_output_forward+0xc9/0x1f0 [ 203.988635] ? perf_prepare_sample+0x1380/0x1380 [ 203.993362] ? __lock_acquire+0x5fc/0x3f20 [ 203.997571] ? check_preemption_disabled+0x35/0x240 [ 204.002559] ? check_preemption_disabled+0x35/0x240 [ 204.007548] __perf_event_overflow+0x113/0x310 [ 204.012102] perf_swevent_hrtimer+0x220/0x350 [ 204.016570] ? __perf_event_overflow+0x310/0x310 [ 204.021298] ? debug_object_deactivate+0x1da/0x2e0 [ 204.026195] ? lock_acquire+0x170/0x3f0 [ 204.030141] ? lock_downgrade+0x740/0x740 [ 204.034263] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 204.039338] ? __hrtimer_run_queues+0x2c5/0xc80 [ 204.043978] ? clockevents_program_event+0x108/0x2d0 [ 204.049052] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 204.054473] __hrtimer_run_queues+0x30b/0xc80 [ 204.058938] ? __perf_event_overflow+0x310/0x310 [ 204.063665] ? retrigger_next_event+0x310/0x310 [ 204.068305] ? ktime_get_update_offsets_now+0x272/0x3f0 [ 204.073639] hrtimer_interrupt+0x1e6/0x5e0 [ 204.077849] smp_apic_timer_interrupt+0x117/0x5e0 [ 204.082665] apic_timer_interrupt+0x93/0xa0 [ 204.086957] [ 204.089167] RIP: 0010:lock_acquire+0x97/0x3f0 [ 204.093631] RSP: 0018:ffff8880a331ee50 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 [ 204.101306] RAX: 1ffffffff11e1270 RBX: ffff8880a63c2480 RCX: 0000000000000000 [ 204.108551] RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff8880a63c2d04 [ 204.115836] RBP: ffffffff8904ade0 R08: 0000000000000001 R09: 0000000000000000 [ 204.123076] R10: 0000000000000000 R11: ffff8880a63c2480 R12: 0000000000000000 [ 204.130318] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 [ 204.137569] kernfs_activate+0x2a/0x180 [ 204.141517] ? __mutex_lock+0xc4/0x1310 [ 204.145466] ? kernfs_activate+0x2a/0x180 [ 204.149587] ? mark_held_locks+0xa6/0xf0 [ 204.153618] retint_kernel+0x2d/0x2d [ 204.157309] RIP: 0000:0xffff8880a63c2cd4 [ 204.161346] RSP: 8904ad80:dffffc0000000000 EFLAGS: ffffffff87400976 ORIG_RAX: ffffffff00000001 [ 204.170064] RAX: ffffffff8722bd30 RBX: ffffffff81a33f2a RCX: 0000000041b58ab3 [ 204.177306] RDX: ffffffff88b5b58c RSI: ffffffff8141ca30 RDI: 0000000000000000 [ 204.184554] RBP: ffffffff8904ade0 R08: ffffffff88b5b250 R09: 0000000041b58ab3 [ 204.191798] R10: 0000000000000282 R11: 0000000000000002 R12: ffffffff81a342de [ 204.199041] R13: ffffffff8904ade0 R14: 1ffff11014663de5 R15: 1ffff11014663de2 [ 204.206288] ? kernfs_add_one+0x25e/0x3a0 [ 204.210411] ? kernfs_activate+0x2a/0x180 [ 204.214532] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 204.219953] ? lock_downgrade+0x740/0x740 [ 204.224076] ? retint_kernel+0x2d/0x2d [ 204.227935] ? __mutex_unlock_slowpath+0x75/0x770 [ 204.232750] ? kernfs_activate+0x2a/0x180 [ 204.236868] ? kernfs_add_one+0x2e5/0x3a0 [ 204.240990] ? kernfs_get+0x44/0x60 [ 204.244590] ? __kernfs_create_file+0x27a/0x320 [ 204.249232] ? sysfs_add_file_mode_ns+0x1e1/0x450 [ 204.254054] ? internal_create_group+0x22b/0x710 [ 204.258785] ? sysfs_create_groups+0x92/0x130 [ 204.263255] ? device_add+0x879/0x15c0 [ 204.267118] ? device_is_dependent+0x2a0/0x2a0 [ 204.271672] ? netdev_register_kobject+0x181/0x410 [ 204.276577] ? register_netdevice+0x955/0xe40 [ 204.281046] ? netdev_change_features+0xa0/0xa0 [ 204.285692] ? br_dev_newlink+0x23/0x100 [ 204.289724] ? rtnl_newlink+0xfab/0x1860 [ 204.293761] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 204.298752] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 204.303478] ? retint_kernel+0x2d/0x2d [ 204.307344] ? strcmp+0x3a/0xb0 [ 204.310599] ? rtnl_newlink+0x43d/0x1860 [ 204.314635] ? br_changelink+0x1570/0x1570 [ 204.318841] ? mark_held_locks+0xa6/0xf0 [ 204.322873] ? rtnl_dellink+0x6a0/0x6a0 [ 204.326820] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 204.331808] ? _raw_spin_unlock_irq+0x5a/0x80 [ 204.336298] ? rtnl_dellink+0x6a0/0x6a0 [ 204.340243] ? rtnetlink_rcv_msg+0x3be/0xb10 [ 204.344623] ? rtnl_calcit.isra.0+0x3a0/0x3a0 [ 204.349090] ? __netlink_lookup+0x345/0x5d0 [ 204.353385] ? netlink_rcv_skb+0x125/0x390 [ 204.357593] ? rtnl_calcit.isra.0+0x3a0/0x3a0 [ 204.362095] ? netlink_ack+0x9a0/0x9a0 [ 204.365955] ? netlink_unicast+0x437/0x610 [ 204.370161] ? netlink_sendskb+0xd0/0xd0 [ 204.374202] ? __check_object_size+0x179/0x230 [ 204.378767] ? netlink_sendmsg+0x638/0xb90 [ 204.382980] ? nlmsg_notify+0x1b0/0x1b0 [ 204.386925] ? kernel_recvmsg+0x210/0x210 [ 204.391048] ? security_socket_sendmsg+0x83/0xb0 [ 204.395812] ? nlmsg_notify+0x1b0/0x1b0 [ 204.399761] ? sock_sendmsg+0xb5/0x100 [ 204.403620] ? ___sys_sendmsg+0x6c8/0x800 [ 204.407737] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 204.412477] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 204.417467] ? retint_kernel+0x2d/0x2d [ 204.421328] ? __might_fault+0x104/0x1b0 [ 204.425362] ? lock_acquire+0x170/0x3f0 [ 204.429307] ? lock_downgrade+0x740/0x740 [ 204.433428] ? __might_fault+0x177/0x1b0 [ 204.437464] ? _copy_to_user+0x82/0xd0 [ 204.441324] ? move_addr_to_user+0x13f/0x180 [ 204.445713] ? __fdget+0x167/0x1f0 [ 204.449225] ? sockfd_lookup_light+0xb2/0x160 [ 204.453692] ? __sys_sendmsg+0xa3/0x120 [ 204.457637] ? SyS_shutdown+0x160/0x160 [ 204.461615] ? move_addr_to_kernel+0x60/0x60 [ 204.465997] ? __do_page_fault+0x159/0xad0 [ 204.470207] ? SyS_sendmsg+0x27/0x40 [ 204.473891] ? __sys_sendmsg+0x120/0x120 [ 204.477923] ? do_syscall_64+0x1d5/0x640 [ 204.481960] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 204.487593] Kernel Offset: disabled [ 204.491233] Rebooting in 86400 seconds..