Warning: Permanently added '10.128.1.32' (ECDSA) to the list of known hosts. 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 executing program syzkaller login: [ 36.112234] ================================================================== [ 36.119661] BUG: KASAN: stack-out-of-bounds in unwind_next_frame+0x146f/0x17d0 [ 36.126993] Read of size 8 at addr ffff8880ba507cd8 by task syz-executor282/8055 [ 36.134497] [ 36.136100] CPU: 1 PID: 8055 Comm: syz-executor282 Not tainted 4.14.203-syzkaller #0 [ 36.143948] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.153273] Call Trace: [ 36.155847] [ 36.157985] dump_stack+0x1b2/0x283 [ 36.161585] print_address_description.cold+0x54/0x1d3 [ 36.166834] kasan_report_error.cold+0x8a/0x194 [ 36.171489] ? unwind_next_frame+0x146f/0x17d0 [ 36.176043] __asan_report_load8_noabort+0x68/0x70 [ 36.180943] ? unwind_next_frame+0x146f/0x17d0 [ 36.185497] unwind_next_frame+0x146f/0x17d0 [ 36.189878] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 36.195226] ? deref_stack_reg+0x1a0/0x1a0 [ 36.199431] ? check_preemption_disabled+0x35/0x240 [ 36.204432] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 36.209782] perf_callchain_kernel+0x38c/0x520 [ 36.214339] ? arch_perf_update_userpage+0x300/0x300 [ 36.219417] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 36.224753] ? check_preemption_disabled+0x35/0x240 [ 36.229740] ? check_preemption_disabled+0x35/0x240 [ 36.234729] get_perf_callchain+0x2df/0x740 [ 36.239024] ? put_callchain_buffers+0x60/0x60 [ 36.243614] ? perf_tp_event+0x3e0/0x6e0 [ 36.247659] perf_callchain+0x147/0x190 [ 36.251606] perf_prepare_sample+0xd77/0x1380 [ 36.256077] ? perf_output_sample+0x16f0/0x16f0 [ 36.260721] perf_event_output_forward+0xc9/0x1f0 [ 36.265537] ? perf_prepare_sample+0x1380/0x1380 [ 36.270266] ? check_preemption_disabled+0x35/0x240 [ 36.275269] ? check_preemption_disabled+0x35/0x240 [ 36.280259] __perf_event_overflow+0x113/0x310 [ 36.284816] perf_swevent_event+0x299/0x460 [ 36.289114] perf_tp_event+0x540/0x6e0 [ 36.293015] ? perf_swevent_event+0x460/0x460 [ 36.297481] ? perf_trace_run_bpf_submit+0x119/0x200 [ 36.302558] ? perf_trace_lock_acquire+0x510/0x510 [ 36.307506] ? __save_stack_trace+0x63/0x160 [ 36.311894] ? deref_stack_reg+0x124/0x1a0 [ 36.316123] ? is_bpf_text_address+0x91/0x150 [ 36.320591] ? lock_acquire+0x170/0x3f0 [ 36.324536] ? lock_downgrade+0x740/0x740 [ 36.328654] ? is_bpf_text_address+0xb8/0x150 [ 36.333136] ? __lock_acquire+0x5fc/0x3f20 [ 36.337355] ? perf_trace_run_bpf_submit+0x119/0x200 [ 36.342437] perf_trace_run_bpf_submit+0x119/0x200 [ 36.347342] perf_trace_lock+0x2d6/0x490 [ 36.351378] ? release_callchain_buffers_rcu+0x5c/0xe0 [ 36.356639] ? rcu_process_callbacks+0x780/0x1180 [ 36.361456] ? __do_softirq+0x254/0xa1d [ 36.365404] ? perf_trace_lock_acquire+0x510/0x510 [ 36.370306] ? exit_mmap+0x27f/0x4d0 [ 36.373993] ? mmput+0xfa/0x420 [ 36.377246] ? do_exit+0x948/0x27f0 [ 36.380844] ? get_signal+0x38d/0x1ca0 [ 36.384742] ? exit_to_usermode_loop+0x160/0x200 [ 36.389504] ? do_syscall_64+0x4a3/0x640 [ 36.393574] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 36.398928] ? debug_check_no_obj_freed+0x2c0/0x674 [ 36.403919] ? perf_trace_lock_acquire+0x510/0x510 [ 36.408820] lock_release+0x4df/0x870 [ 36.412595] ? lock_acquire+0x170/0x3f0 [ 36.416541] ? lock_downgrade+0x740/0x740 [ 36.420664] _raw_spin_unlock_irqrestore+0x1b/0xe0 [ 36.425571] debug_check_no_obj_freed+0x2c0/0x674 [ 36.430389] ? kfree+0x14a/0x250 [ 36.434478] ? debug_object_activate+0x490/0x490 [ 36.439236] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 36.444697] kfree+0xb9/0x250 [ 36.447777] ? perf_mmap_to_page+0x220/0x220 [ 36.452161] rcu_process_callbacks+0x780/0x1180 [ 36.456840] ? note_gp_changes+0x2f0/0x2f0 [ 36.461049] ? sched_clock+0x2a/0x40 [ 36.464737] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 36.470167] __do_softirq+0x254/0xa1d [ 36.473941] ? check_preemption_disabled+0x35/0x240 [ 36.478928] irq_exit+0x193/0x240 [ 36.482380] smp_apic_timer_interrupt+0x141/0x5e0 [ 36.487199] apic_timer_interrupt+0x93/0xa0 [ 36.491492] [ 36.493713] RIP: 0010:kmem_cache_free+0x173/0x2b0 [ 36.498544] RSP: 0018:ffff8880955f78d0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 [ 36.506241] RAX: 0000000000000007 RBX: ffff88809d742a10 RCX: 0000000000000000 [ 36.513501] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000282 [ 36.520754] RBP: ffff88823f8301c0 R08: 0000000000000000 R09: 0000000000000000 [ 36.527997] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000282 [ 36.535238] R13: ffffffff817a7596 R14: ffff88809d742a20 R15: dead000000000200 [ 36.542490] ? unlink_anon_vmas+0x466/0x7e0 [ 36.546788] unlink_anon_vmas+0x466/0x7e0 [ 36.550909] ? up_write+0x17/0x60 [ 36.554338] free_pgtables+0x178/0x2b0 [ 36.558198] exit_mmap+0x27f/0x4d0 [ 36.561708] ? SyS_remap_file_pages+0x6a0/0x6a0 [ 36.566351] ? kmem_cache_free+0x23a/0x2b0 [ 36.570556] ? __khugepaged_exit+0x29b/0x3c0 [ 36.574937] mmput+0xfa/0x420 [ 36.578016] do_exit+0x948/0x27f0 [ 36.581442] ? perf_trace_lock_acquire+0x510/0x510 [ 36.586354] ? mm_update_next_owner+0x5b0/0x5b0 [ 36.590993] ? get_signal+0x323/0x1ca0 [ 36.594865] ? lock_acquire+0x170/0x3f0 [ 36.598820] ? lock_downgrade+0x740/0x740 [ 36.602939] do_group_exit+0x100/0x2e0 [ 36.606796] get_signal+0x38d/0x1ca0 [ 36.610493] do_signal+0x7c/0x1550 [ 36.614005] ? __mutex_unlock_slowpath+0x75/0x770 [ 36.618817] ? wait_for_completion_io+0x10/0x10 [ 36.623456] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 36.628528] ? setup_sigcontext+0x820/0x820 [ 36.632836] ? SyS_perf_event_open+0x5ea/0x24b0 [ 36.637579] ? SyS_futex+0x1da/0x290 [ 36.641266] ? SyS_futex+0x1e3/0x290 [ 36.644953] ? exit_to_usermode_loop+0x41/0x200 [ 36.649592] exit_to_usermode_loop+0x160/0x200 [ 36.654147] do_syscall_64+0x4a3/0x640 [ 36.658008] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 36.663173] RIP: 0033:0x4467c9 [ 36.666337] RSP: 002b:00007ff7c2554db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 36.674014] RAX: fffffffffffffe00 RBX: 00000000006dbc28 RCX: 00000000004467c9 [ 36.681254] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000006dbc28 [ 36.688494] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 36.695733] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 36.702974] R13: 00007ffd82b4054f R14: 00007ff7c25559c0 R15: 0000000000000000 [ 36.710216] [ 36.711816] The buggy address belongs to the page: [ 36.716718] page:ffffea0002e941c0 count:1 mapcount:0 mapping: (null) index:0x0 [ 36.724829] flags: 0xfff00000000800(reserved) [ 36.729297] raw: 00fff00000000800 0000000000000000 0000000000000000 00000001ffffffff [ 36.737153] raw: ffffea0002e941e0 ffffea0002e941e0 0000000000000000 0000000000000000 [ 36.745003] page dumped because: kasan: bad access detected [ 36.750690] [ 36.752300] Memory state around the buggy address: [ 36.757210] ffff8880ba507b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f1 [ 36.764537] ffff8880ba507c00: f1 f1 f1 f1 f1 04 f2 00 f3 f3 f3 00 00 00 00 00 [ 36.771865] >ffff8880ba507c80: 00 00 00 00 00 f1 f1 f1 f1 04 f3 f3 f3 00 00 00 [ 36.779192] ^ [ 36.785393] ffff8880ba507d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 36.792734] ffff8880ba507d80: 00 00 00 00 f1 f1 f1 f1 00 f3 f3 f3 00 00 00 00 [ 36.800061] ================================================================== [ 36.807394] Disabling lock debugging due to kernel taint [ 36.812814] Kernel panic - not syncing: panic_on_warn set ... [ 36.812814] [ 36.820146] CPU: 1 PID: 8055 Comm: syz-executor282 Tainted: G B 4.14.203-syzkaller #0 [ 36.829212] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.838536] Call Trace: [ 36.841104] [ 36.843226] dump_stack+0x1b2/0x283 [ 36.846825] panic+0x1f9/0x42d [ 36.850062] ? add_taint.cold+0x16/0x16 [ 36.854028] ? lock_downgrade+0x740/0x740 [ 36.858155] kasan_end_report+0x43/0x49 [ 36.862104] kasan_report_error.cold+0xa7/0x194 [ 36.866748] ? unwind_next_frame+0x146f/0x17d0 [ 36.871302] __asan_report_load8_noabort+0x68/0x70 [ 36.876205] ? unwind_next_frame+0x146f/0x17d0 [ 36.880759] unwind_next_frame+0x146f/0x17d0 [ 36.885141] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 36.890478] ? deref_stack_reg+0x1a0/0x1a0 [ 36.894686] ? check_preemption_disabled+0x35/0x240 [ 36.899673] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 36.905010] perf_callchain_kernel+0x38c/0x520 [ 36.909565] ? arch_perf_update_userpage+0x300/0x300 [ 36.914658] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 36.919994] ? check_preemption_disabled+0x35/0x240 [ 36.926284] ? check_preemption_disabled+0x35/0x240 [ 36.931276] get_perf_callchain+0x2df/0x740 [ 36.935591] ? put_callchain_buffers+0x60/0x60 [ 36.940155] ? perf_tp_event+0x3e0/0x6e0 [ 36.944186] perf_callchain+0x147/0x190 [ 36.948132] perf_prepare_sample+0xd77/0x1380 [ 36.952597] ? perf_output_sample+0x16f0/0x16f0 [ 36.957237] perf_event_output_forward+0xc9/0x1f0 [ 36.962050] ? perf_prepare_sample+0x1380/0x1380 [ 36.966790] ? check_preemption_disabled+0x35/0x240 [ 36.971776] ? check_preemption_disabled+0x35/0x240 [ 36.976763] __perf_event_overflow+0x113/0x310 [ 36.981317] perf_swevent_event+0x299/0x460 [ 36.985610] perf_tp_event+0x540/0x6e0 [ 36.989480] ? perf_swevent_event+0x460/0x460 [ 36.993945] ? perf_trace_run_bpf_submit+0x119/0x200 [ 36.999021] ? perf_trace_lock_acquire+0x510/0x510 [ 37.003935] ? __save_stack_trace+0x63/0x160 [ 37.008314] ? deref_stack_reg+0x124/0x1a0 [ 37.012519] ? is_bpf_text_address+0x91/0x150 [ 37.016985] ? lock_acquire+0x170/0x3f0 [ 37.020941] ? lock_downgrade+0x740/0x740 [ 37.025067] ? is_bpf_text_address+0xb8/0x150 [ 37.029531] ? __lock_acquire+0x5fc/0x3f20 [ 37.033736] ? perf_trace_run_bpf_submit+0x119/0x200 [ 37.038810] perf_trace_run_bpf_submit+0x119/0x200 [ 37.043733] perf_trace_lock+0x2d6/0x490 [ 37.047767] ? release_callchain_buffers_rcu+0x5c/0xe0 [ 37.053013] ? rcu_process_callbacks+0x780/0x1180 [ 37.057824] ? __do_softirq+0x254/0xa1d [ 37.061768] ? perf_trace_lock_acquire+0x510/0x510 [ 37.066668] ? exit_mmap+0x27f/0x4d0 [ 37.070353] ? mmput+0xfa/0x420 [ 37.073605] ? do_exit+0x948/0x27f0 [ 37.077200] ? get_signal+0x38d/0x1ca0 [ 37.081059] ? exit_to_usermode_loop+0x160/0x200 [ 37.085784] ? do_syscall_64+0x4a3/0x640 [ 37.089813] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 37.095144] ? debug_check_no_obj_freed+0x2c0/0x674 [ 37.100128] ? perf_trace_lock_acquire+0x510/0x510 [ 37.105031] lock_release+0x4df/0x870 [ 37.108802] ? lock_acquire+0x170/0x3f0 [ 37.112748] ? lock_downgrade+0x740/0x740 [ 37.116866] _raw_spin_unlock_irqrestore+0x1b/0xe0 [ 37.121766] debug_check_no_obj_freed+0x2c0/0x674 [ 37.126588] ? kfree+0x14a/0x250 [ 37.129925] ? debug_object_activate+0x490/0x490 [ 37.134651] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 37.140073] kfree+0xb9/0x250 [ 37.143150] ? perf_mmap_to_page+0x220/0x220 [ 37.147528] rcu_process_callbacks+0x780/0x1180 [ 37.152167] ? note_gp_changes+0x2f0/0x2f0 [ 37.156371] ? sched_clock+0x2a/0x40 [ 37.160054] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 37.165477] __do_softirq+0x254/0xa1d [ 37.169248] ? check_preemption_disabled+0x35/0x240 [ 37.174247] irq_exit+0x193/0x240 [ 37.177670] smp_apic_timer_interrupt+0x141/0x5e0 [ 37.182483] apic_timer_interrupt+0x93/0xa0 [ 37.186775] [ 37.188984] RIP: 0010:kmem_cache_free+0x173/0x2b0 [ 37.193795] RSP: 0018:ffff8880955f78d0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 [ 37.201484] RAX: 0000000000000007 RBX: ffff88809d742a10 RCX: 0000000000000000 [ 37.208724] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000282 [ 37.215975] RBP: ffff88823f8301c0 R08: 0000000000000000 R09: 0000000000000000 [ 37.223226] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000282 [ 37.230470] R13: ffffffff817a7596 R14: ffff88809d742a20 R15: dead000000000200 [ 37.237716] ? unlink_anon_vmas+0x466/0x7e0 [ 37.242011] unlink_anon_vmas+0x466/0x7e0 [ 37.246128] ? up_write+0x17/0x60 [ 37.249556] free_pgtables+0x178/0x2b0 [ 37.253414] exit_mmap+0x27f/0x4d0 [ 37.256924] ? SyS_remap_file_pages+0x6a0/0x6a0 [ 37.261564] ? kmem_cache_free+0x23a/0x2b0 [ 37.265770] ? __khugepaged_exit+0x29b/0x3c0 [ 37.270151] mmput+0xfa/0x420 [ 37.273229] do_exit+0x948/0x27f0 [ 37.276652] ? perf_trace_lock_acquire+0x510/0x510 [ 37.281563] ? mm_update_next_owner+0x5b0/0x5b0 [ 37.286202] ? get_signal+0x323/0x1ca0 [ 37.290075] ? lock_acquire+0x170/0x3f0 [ 37.294018] ? lock_downgrade+0x740/0x740 [ 37.298239] do_group_exit+0x100/0x2e0 [ 37.302098] get_signal+0x38d/0x1ca0 [ 37.305785] do_signal+0x7c/0x1550 [ 37.309293] ? __mutex_unlock_slowpath+0x75/0x770 [ 37.314127] ? wait_for_completion_io+0x10/0x10 [ 37.318765] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 37.323839] ? setup_sigcontext+0x820/0x820 [ 37.328132] ? SyS_perf_event_open+0x5ea/0x24b0 [ 37.332771] ? SyS_futex+0x1da/0x290 [ 37.336456] ? SyS_futex+0x1e3/0x290 [ 37.340153] ? exit_to_usermode_loop+0x41/0x200 [ 37.344798] exit_to_usermode_loop+0x160/0x200 [ 37.349395] do_syscall_64+0x4a3/0x640 [ 37.353259] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 37.358420] RIP: 0033:0x4467c9 [ 37.361583] RSP: 002b:00007ff7c2554db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 37.369263] RAX: fffffffffffffe00 RBX: 00000000006dbc28 RCX: 00000000004467c9 [ 37.376508] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000006dbc28 [ 37.383750] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 37.390993] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 37.398236] R13: 00007ffd82b4054f R14: 00007ff7c25559c0 R15: 0000000000000000 [ 38.530881] Shutting down cpus with NMI [ 38.535542] Kernel Offset: disabled [ 38.539146] Rebooting in 86400 seconds..