[[0;32m OK [0m] Reached target Graphical Interface.
Starting Update UTMP about System Runlevel Changes...
Starting Load/Save RF Kill Switch Status...
[[0;32m OK [0m] Started Update UTMP about System Runlevel Changes.
[[0;32m OK [0m] Started Load/Save RF Kill Switch Status.
Debian GNU/Linux 9 syzkaller ttyS0
Warning: Permanently added '10.128.10.34' (ECDSA) to the list of known hosts.
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syzkaller login: [ 36.090608] audit: type=1400 audit(1599194252.035:8): avc: denied { execmem } for pid=6349 comm="syz-executor694" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
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[ 36.145230] audit: type=1400 audit(1599194252.055:9): avc: denied { create } for pid=6357 comm="syz-executor694" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dccp_socket permissive=1
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[ 36.398271] ==================================================================
[ 36.405686] BUG: KASAN: stack-out-of-bounds in unwind_next_frame+0x1360/0x17d0
[ 36.413057] Read of size 8 at addr ffff8880aea07c98 by task syz-executor694/6449
[ 36.421142]
[ 36.422772] CPU: 0 PID: 6449 Comm: syz-executor694 Not tainted 4.14.196-syzkaller #0
[ 36.430945] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 36.440600] Call Trace:
[ 36.443284]
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[ 36.445440] dump_stack+0x1b2/0x283
[ 36.449075] print_address_description.cold+0x54/0x1d3
[ 36.454977] kasan_report_error.cold+0x8a/0x194
[ 36.459680] ? unwind_next_frame+0x1360/0x17d0
[ 36.464275] __asan_report_load8_noabort+0x68/0x70
[ 36.469244] ? unwind_next_frame+0x1360/0x17d0
[ 36.474374] unwind_next_frame+0x1360/0x17d0
[ 36.479697] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb
[ 36.485168] ? deref_stack_reg+0x1a0/0x1a0
[ 36.489693] ? check_preemption_disabled+0x35/0x240
[ 36.495342] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb
[ 36.500742] perf_callchain_kernel+0x38c/0x520
[ 36.505343] ? arch_perf_update_userpage+0x300/0x300
[ 36.510460] ? check_preemption_disabled+0x35/0x240
[ 36.515490] ? check_preemption_disabled+0x35/0x240
[ 36.520546] get_perf_callchain+0x2df/0x740
[ 36.524975] ? put_callchain_buffers+0x60/0x60
[ 36.529571] ? perf_tp_event+0x3e0/0x6e0
[ 36.533651] perf_callchain+0x147/0x190
[ 36.537637] perf_prepare_sample+0xd77/0x1380
[ 36.542338] ? perf_event_output_forward+0x143/0x1f0
[ 36.548668] ? perf_output_sample+0x16f0/0x16f0
[ 36.554039] perf_event_output_forward+0xc9/0x1f0
[ 36.559417] ? perf_prepare_sample+0x1380/0x1380
[ 36.564274] ? __perf_event_overflow+0x1b6/0x310
[ 36.569069] ? check_preemption_disabled+0x35/0x240
[ 36.574092] __perf_event_overflow+0x113/0x310
[ 36.578866] perf_swevent_event+0x299/0x460
[ 36.583203] perf_tp_event+0x540/0x6e0
[ 36.587128] ? perf_swevent_event+0x460/0x460
[ 36.591636] ? perf_trace_lock_acquire+0x332/0x510
[ 36.596577] ? HARDIRQ_verbose+0x10/0x10
[ 36.600808] ? __save_stack_trace+0x63/0x160
[ 36.605223] ? deref_stack_reg+0x124/0x1a0
[ 36.609470] ? is_bpf_text_address+0x91/0x150
[ 36.614182] ? lock_acquire+0x170/0x3f0
[ 36.618218] ? lock_downgrade+0x740/0x740
[ 36.622462] ? is_bpf_text_address+0xb8/0x150
[ 36.627157] ? kernel_text_address+0xbd/0xf0
[ 36.631581] ? __kernel_text_address+0x9/0x30
[ 36.636514] ? unwind_get_return_address+0x51/0x90
[ 36.642172] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb
[ 36.647634] ? __save_stack_trace+0xa0/0x160
[ 36.652069] ? perf_trace_run_bpf_submit+0x119/0x200
[ 36.657457] perf_trace_run_bpf_submit+0x119/0x200
[ 36.664540] perf_trace_lock_acquire+0x332/0x510
[ 36.669337] ? apic_timer_interrupt+0x93/0xa0
[ 36.673860] ? _raw_spin_unlock_irqrestore+0xa3/0xe0
[ 36.678964] ? debug_check_no_obj_freed+0x2c0/0x674
[ 36.683987] ? HARDIRQ_verbose+0x10/0x10
[ 36.688091] ? SyS_exit_group+0x19/0x20
[ 36.692067] ? do_syscall_64+0x1d5/0x640
[ 36.696162] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb
[ 36.701537] lock_acquire+0x2b8/0x3f0
[ 36.705355] ? debug_object_active_state+0xe7/0x330
[ 36.710381] _raw_spin_lock_irqsave+0x8c/0xc0
[ 36.715407] ? debug_object_active_state+0xe7/0x330
[ 36.720473] debug_object_active_state+0xe7/0x330
[ 36.725350] ? debug_object_free+0x320/0x320
[ 36.729787] ? lock_downgrade+0x740/0x740
[ 36.733944] ? find_get_pid+0x200/0x200
[ 36.737929] rcu_process_callbacks+0x82d/0x1180
[ 36.742812] ? note_gp_changes+0x2f0/0x2f0
[ 36.747046] ? sched_clock+0x2a/0x40
[ 36.750763] ? rcu_lockdep_current_cpu_online+0xed/0x140
[ 36.756218] __do_softirq+0x254/0xa1d
[ 36.760030] ? check_preemption_disabled+0x35/0x240
[ 36.765144] irq_exit+0x193/0x240
[ 36.768605] smp_apic_timer_interrupt+0x141/0x5e0
[ 36.773485] apic_timer_interrupt+0x93/0xa0
[ 36.777836]
[ 36.780084] RIP: 0010:_raw_spin_unlock_irqrestore+0xa3/0xe0
[ 36.785789] RSP: 0018:ffff888097cb79c8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10
[ 36.793500] RAX: 1ffffffff0fa2d21 RBX: 0000000000000286 RCX: 0000000000000000
[ 36.800776] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000286
[ 36.808075] RBP: ffffffff8a747448 R08: ffffffff8a083a68 R09: 0000000000000000
[ 36.815344] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888080a00000
[ 36.822620] R13: 0000000000000000 R14: ffffffff8a747448 R15: 0000000000000000
[ 36.829935] debug_check_no_obj_freed+0x2c0/0x674
[ 36.834792] ? free_transhuge_page+0x1e8/0x290
[ 36.839384] ? debug_object_activate+0x490/0x490
[ 36.844147] ? rcu_lockdep_current_cpu_online+0xed/0x140
[ 36.852236] __free_pages_ok+0x215/0xeb0
[ 36.856303] ? _raw_spin_unlock_irqrestore+0x66/0xe0
[ 36.861506] ? free_transhuge_page+0x1e8/0x290
[ 36.866817] release_pages+0x779/0xbf0
[ 36.871280] ? __put_compound_page+0xb0/0xb0
[ 36.876046] ? free_pages_and_swap_cache+0x166/0x210
[ 36.881274] tlb_flush_mmu_free+0xc1/0x1a0
[ 36.885561] tlb_finish_mmu+0xf3/0x1e0
[ 36.889452] exit_mmap+0x290/0x4d0
[ 36.892993] ? SyS_remap_file_pages+0x6a0/0x6a0
[ 36.897672] ? kmem_cache_free+0x23a/0x2b0
[ 36.901946] ? __khugepaged_exit+0x29b/0x3c0
[ 36.906359] mmput+0xfa/0x420
[ 36.909469] do_exit+0x948/0x27f0
[ 36.912930] ? __do_page_fault+0x5a0/0xb50
[ 36.917175] ? mm_update_next_owner+0x5b0/0x5b0
[ 36.921854] ? lock_downgrade+0x740/0x740
[ 36.926044] do_group_exit+0x100/0x2e0
[ 36.929959] SyS_exit_group+0x19/0x20
[ 36.933795] ? do_group_exit+0x2e0/0x2e0
[ 36.937856] do_syscall_64+0x1d5/0x640
[ 36.941751] entry_SYSCALL_64_after_hwframe+0x46/0xbb
[ 36.946944] RIP: 0033:0x440068
[ 36.950286] RSP: 002b:00007ffcd0efeb78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[ 36.958175] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
[ 36.965444] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
[ 36.972711] RBP: 00000000004bf890 R08: 00000000000000e7 R09: ffffffffffffffd0
[ 36.979980] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
[ 36.987280] R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000
[ 36.994554]
[ 36.996173] The buggy address belongs to the page:
[ 37.001095] page:ffffea0002ba81c0 count:1 mapcount:0 mapping: (null) index:0x0
[ 37.013861] flags: 0xfffe0000000800(reserved)
[ 37.018533] raw: 00fffe0000000800 0000000000000000 0000000000000000 00000001ffffffff
[ 37.026536] raw: ffffea0002ba81e0 ffffea0002ba81e0 0000000000000000 0000000000000000
[ 37.034440] page dumped because: kasan: bad access detected
[ 37.040363]
[ 37.042004] Memory state around the buggy address:
[ 37.047311] ffff8880aea07b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 37.054844] ffff8880aea07c00: 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 f1 f1 04
[ 37.062664] >ffff8880aea07c80: f2 00 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00
[ 37.070313] ^
[ 37.074480] ffff8880aea07d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 37.082100] ffff8880aea07d80: 00 f1 f1 f1 f1 f1 f1 00 00 00 00 00 f3 f3 f3 f3
[ 37.089655] ==================================================================
[ 37.097970] Disabling lock debugging due to kernel taint
[ 37.103443] Kernel panic - not syncing: panic_on_warn set ...
[ 37.103443]
[ 37.111037] CPU: 0 PID: 6449 Comm: syz-executor694 Tainted: G B 4.14.196-syzkaller #0
[ 37.120131] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 37.129482] Call Trace:
[ 37.132085]
[ 37.134237] dump_stack+0x1b2/0x283
[ 37.137862] panic+0x1f9/0x42d
[ 37.141076] ? add_taint.cold+0x16/0x16
[ 37.145071] ? lock_downgrade+0x740/0x740
[ 37.149260] kasan_end_report+0x43/0x49
[ 37.153236] kasan_report_error.cold+0xa7/0x194
[ 37.157903] ? unwind_next_frame+0x1360/0x17d0
[ 37.162487] __asan_report_load8_noabort+0x68/0x70
[ 37.167417] ? unwind_next_frame+0x1360/0x17d0
[ 37.172434] unwind_next_frame+0x1360/0x17d0
[ 37.177022] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb
[ 37.182418] ? deref_stack_reg+0x1a0/0x1a0
[ 37.186657] ? check_preemption_disabled+0x35/0x240
[ 37.191801] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb
[ 37.197173] perf_callchain_kernel+0x38c/0x520
[ 37.201940] ? arch_perf_update_userpage+0x300/0x300
[ 37.207056] ? check_preemption_disabled+0x35/0x240
[ 37.212167] ? check_preemption_disabled+0x35/0x240
[ 37.217315] get_perf_callchain+0x2df/0x740
[ 37.221702] ? put_callchain_buffers+0x60/0x60
[ 37.226289] ? perf_tp_event+0x3e0/0x6e0
[ 37.230446] perf_callchain+0x147/0x190
[ 37.234423] perf_prepare_sample+0xd77/0x1380
[ 37.239022] ? perf_event_output_forward+0x143/0x1f0
[ 37.244130] ? perf_output_sample+0x16f0/0x16f0
[ 37.248805] perf_event_output_forward+0xc9/0x1f0
[ 37.254040] ? perf_prepare_sample+0x1380/0x1380
[ 37.258805] ? __perf_event_overflow+0x1b6/0x310
[ 37.263576] ? check_preemption_disabled+0x35/0x240
[ 37.268604] __perf_event_overflow+0x113/0x310
[ 37.273191] perf_swevent_event+0x299/0x460
[ 37.278213] perf_tp_event+0x540/0x6e0
[ 37.282108] ? perf_swevent_event+0x460/0x460
[ 37.286614] ? perf_trace_lock_acquire+0x332/0x510
[ 37.291651] ? HARDIRQ_verbose+0x10/0x10
[ 37.296169] ? __save_stack_trace+0x63/0x160
[ 37.301537] ? deref_stack_reg+0x124/0x1a0
[ 37.305787] ? is_bpf_text_address+0x91/0x150
[ 37.310313] ? lock_acquire+0x170/0x3f0
[ 37.314307] ? lock_downgrade+0x740/0x740
[ 37.318461] ? is_bpf_text_address+0xb8/0x150
[ 37.322973] ? kernel_text_address+0xbd/0xf0
[ 37.327406] ? __kernel_text_address+0x9/0x30
[ 37.332021] ? unwind_get_return_address+0x51/0x90
[ 37.336954] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb
[ 37.342704] ? __save_stack_trace+0xa0/0x160
[ 37.347653] ? perf_trace_run_bpf_submit+0x119/0x200
[ 37.352760] perf_trace_run_bpf_submit+0x119/0x200
[ 37.357784] perf_trace_lock_acquire+0x332/0x510
[ 37.362542] ? apic_timer_interrupt+0x93/0xa0
[ 37.367361] ? _raw_spin_unlock_irqrestore+0xa3/0xe0
[ 37.372469] ? debug_check_no_obj_freed+0x2c0/0x674
[ 37.377517] ? HARDIRQ_verbose+0x10/0x10
[ 37.381589] ? SyS_exit_group+0x19/0x20
[ 37.385660] ? do_syscall_64+0x1d5/0x640
[ 37.389724] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb
[ 37.395182] lock_acquire+0x2b8/0x3f0
[ 37.398985] ? debug_object_active_state+0xe7/0x330
[ 37.404092] _raw_spin_lock_irqsave+0x8c/0xc0
[ 37.408605] ? debug_object_active_state+0xe7/0x330
[ 37.413629] debug_object_active_state+0xe7/0x330
[ 37.418571] ? debug_object_free+0x320/0x320
[ 37.423518] ? lock_downgrade+0x740/0x740
[ 37.427928] ? find_get_pid+0x200/0x200
[ 37.432546] rcu_process_callbacks+0x82d/0x1180
[ 37.437763] ? note_gp_changes+0x2f0/0x2f0
[ 37.442000] ? sched_clock+0x2a/0x40
[ 37.445963] ? rcu_lockdep_current_cpu_online+0xed/0x140
[ 37.451417] __do_softirq+0x254/0xa1d
[ 37.455227] ? check_preemption_disabled+0x35/0x240
[ 37.460250] irq_exit+0x193/0x240
[ 37.463712] smp_apic_timer_interrupt+0x141/0x5e0
[ 37.468563] apic_timer_interrupt+0x93/0xa0
[ 37.472879]
[ 37.475119] RIP: 0010:_raw_spin_unlock_irqrestore+0xa3/0xe0
[ 37.480823] RSP: 0018:ffff888097cb79c8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10
[ 37.488529] RAX: 1ffffffff0fa2d21 RBX: 0000000000000286 RCX: 0000000000000000
[ 37.495801] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000286
[ 37.503170] RBP: ffffffff8a747448 R08: ffffffff8a083a68 R09: 0000000000000000
[ 37.511432] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888080a00000
[ 37.519264] R13: 0000000000000000 R14: ffffffff8a747448 R15: 0000000000000000
[ 37.527833] debug_check_no_obj_freed+0x2c0/0x674
[ 37.532785] ? free_transhuge_page+0x1e8/0x290
[ 37.537460] ? debug_object_activate+0x490/0x490
[ 37.542229] ? rcu_lockdep_current_cpu_online+0xed/0x140
[ 37.547683] __free_pages_ok+0x215/0xeb0
[ 37.551778] ? _raw_spin_unlock_irqrestore+0x66/0xe0
[ 37.556887] ? free_transhuge_page+0x1e8/0x290
[ 37.561470] release_pages+0x779/0xbf0
[ 37.565365] ? __put_compound_page+0xb0/0xb0
[ 37.569778] ? free_pages_and_swap_cache+0x166/0x210
[ 37.574886] tlb_flush_mmu_free+0xc1/0x1a0
[ 37.579122] tlb_finish_mmu+0xf3/0x1e0
[ 37.583015] exit_mmap+0x290/0x4d0
[ 37.586556] ? SyS_remap_file_pages+0x6a0/0x6a0
[ 37.591238] ? kmem_cache_free+0x23a/0x2b0
[ 37.595488] ? __khugepaged_exit+0x29b/0x3c0
[ 37.599895] mmput+0xfa/0x420
[ 37.602998] do_exit+0x948/0x27f0
[ 37.606539] ? __do_page_fault+0x5a0/0xb50
[ 37.610778] ? mm_update_next_owner+0x5b0/0x5b0
[ 37.615503] ? lock_downgrade+0x740/0x740
[ 37.619655] do_group_exit+0x100/0x2e0
[ 37.623550] SyS_exit_group+0x19/0x20
[ 37.627885] ? do_group_exit+0x2e0/0x2e0
[ 37.631950] do_syscall_64+0x1d5/0x640
[ 37.635876] entry_SYSCALL_64_after_hwframe+0x46/0xbb
[ 37.641064] RIP: 0033:0x440068
[ 37.644247] RSP: 002b:00007ffcd0efeb78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[ 37.651950] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
[ 37.659225] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
[ 37.666598] RBP: 00000000004bf890 R08: 00000000000000e7 R09: ffffffffffffffd0
[ 37.673973] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
[ 37.681247] R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000
[ 37.689546] Kernel Offset: disabled
[ 37.693497] Rebooting in 86400 seconds..