Warning: Permanently added '10.128.0.56' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 29.680810] ================================================================== [ 29.688174] BUG: KASAN: stack-out-of-bounds in unwind_next_frame+0x146f/0x17d0 [ 29.695507] Read of size 8 at addr ffff8880ba507cb0 by task syz-executor361/7960 [ 29.703506] [ 29.705111] CPU: 1 PID: 7960 Comm: syz-executor361 Not tainted 4.14.292-syzkaller #0 [ 29.712962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 [ 29.722294] Call Trace: [ 29.724856] [ 29.726989] dump_stack+0x1b2/0x281 [ 29.730593] print_address_description.cold+0x54/0x1d3 [ 29.735845] kasan_report_error.cold+0x8a/0x191 [ 29.740487] ? unwind_next_frame+0x146f/0x17d0 [ 29.745044] __asan_report_load8_noabort+0x68/0x70 [ 29.749951] ? unwind_next_frame+0x146f/0x17d0 [ 29.754509] unwind_next_frame+0x146f/0x17d0 [ 29.758893] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.764342] ? lock_downgrade+0x740/0x740 [ 29.768466] ? lock_downgrade+0x740/0x740 [ 29.772593] ? deref_stack_reg+0x1a0/0x1a0 [ 29.776807] ? check_preemption_disabled+0x35/0x240 [ 29.781805] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.787144] perf_callchain_kernel+0x38c/0x520 [ 29.791700] ? arch_perf_update_userpage+0x300/0x300 [ 29.796777] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.802114] ? check_preemption_disabled+0x35/0x240 [ 29.807109] get_perf_callchain+0x2de/0x740 [ 29.811410] ? put_callchain_buffers+0x60/0x60 [ 29.815969] ? put_callchain_buffers+0x60/0x60 [ 29.820532] ? perf_tp_event+0x3e0/0x6e0 [ 29.824569] perf_callchain+0x147/0x190 [ 29.828519] perf_prepare_sample+0xc9a/0x1370 [ 29.832988] ? perf_output_sample+0x16f0/0x16f0 [ 29.837632] perf_event_output_forward+0xc9/0x1f0 [ 29.842446] ? perf_prepare_sample+0x1370/0x1370 [ 29.847176] ? perf_event_output_forward+0x143/0x1f0 [ 29.852250] ? perf_prepare_sample+0x1370/0x1370 [ 29.856978] ? check_preemption_disabled+0x35/0x240 [ 29.861966] __perf_event_overflow+0x113/0x310 [ 29.866521] perf_swevent_event+0x3c8/0x460 [ 29.870814] perf_tp_event+0x540/0x6e0 [ 29.874677] ? check_preemption_disabled+0x35/0x240 [ 29.879665] ? perf_swevent_event+0x460/0x460 [ 29.884136] ? __save_stack_trace+0x63/0x160 [ 29.888519] ? deref_stack_reg+0x124/0x1a0 [ 29.892730] ? is_bpf_text_address+0x91/0x150 [ 29.897199] ? lock_acquire+0x170/0x3f0 [ 29.901148] ? lock_downgrade+0x740/0x740 [ 29.905271] ? is_bpf_text_address+0xb8/0x150 [ 29.909739] ? kernel_text_address+0xbd/0xf0 [ 29.914123] ? perf_trace_run_bpf_submit+0x119/0x200 [ 29.919199] ? check_preemption_disabled+0x35/0x240 [ 29.924188] perf_trace_run_bpf_submit+0x119/0x200 [ 29.929093] perf_trace_lock+0x2d6/0x490 [ 29.933129] ? perf_trace_lock_acquire+0x510/0x510 [ 29.938032] ? unmap_single_vma+0x147/0x2b0 [ 29.942325] ? perf_trace_lock_acquire+0x510/0x510 [ 29.947227] ? do_syscall_64+0x1d5/0x640 [ 29.951264] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.956599] ? free_object+0xe4/0x240 [ 29.960371] ? perf_trace_lock_acquire+0x510/0x510 [ 29.965272] lock_release+0x4df/0x870 [ 29.969045] ? lock_acquire+0x170/0x3f0 [ 29.972994] ? lock_downgrade+0x740/0x740 [ 29.977130] ? lock_acquire+0x170/0x3f0 [ 29.981082] _raw_spin_unlock_irqrestore+0x1b/0xe0 [ 29.985995] free_object+0xe4/0x240 [ 29.989603] debug_check_no_obj_freed+0x372/0x680 [ 29.994431] ? mark_held_locks+0xa6/0xf0 [ 29.998473] ? free_uid+0x24d/0x330 [ 30.002421] ? debug_object_activate+0x490/0x490 [ 30.007153] kmem_cache_free+0x156/0x2b0 [ 30.011190] ? profiling_store+0xb0/0xb0 [ 30.015228] rcu_process_callbacks+0x780/0x1180 [ 30.019891] ? note_gp_changes+0x2f0/0x2f0 [ 30.024116] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 30.029558] __do_softirq+0x24d/0x9ff [ 30.033343] ? check_preemption_disabled+0x35/0x240 [ 30.038333] irq_exit+0x193/0x240 [ 30.041767] smp_apic_timer_interrupt+0x141/0x5e0 [ 30.046583] apic_timer_interrupt+0x93/0xa0 [ 30.050879] [ 30.053095] RIP: 0010:lock_release+0x41e/0x870 [ 30.057650] RSP: 0018:ffff8880a29b79c0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 [ 30.065334] RAX: 1ffffffff11e1359 RBX: 1ffff11014536f3b RCX: 1ffff11012e0e5e6 [ 30.072578] RDX: dffffc0000000000 RSI: 0000000000000002 RDI: 0000000000000286 [ 30.079824] RBP: ffff888097072680 R08: 0000000000000000 R09: 0000000000000001 [ 30.087065] R10: ffff8880a29b7880 R11: 0000000000000001 R12: 4266a10b7c0d49cf [ 30.094309] R13: 0000000000000003 R14: ffff888097072680 R15: 0000000000000002 [ 30.101563] ? check_preemption_disabled+0x35/0x240 [ 30.106556] ? lock_downgrade+0x740/0x740 [ 30.110679] page_remove_rmap+0x96/0xe0 [ 30.114642] unmap_page_range+0xf41/0x1d90 [ 30.118853] ? vm_normal_page_pmd+0x340/0x340 [ 30.123321] unmap_single_vma+0x147/0x2b0 [ 30.127442] unmap_vmas+0x9d/0x160 [ 30.130954] exit_mmap+0x270/0x4d0 [ 30.134468] ? SyS_remap_file_pages+0x6a0/0x6a0 [ 30.139114] ? kmem_cache_free+0x23a/0x2b0 [ 30.143322] ? __khugepaged_exit+0x29b/0x3c0 [ 30.147706] mmput+0xfa/0x420 [ 30.150788] do_exit+0x984/0x2850 [ 30.154216] ? __do_page_fault+0x571/0xad0 [ 30.158423] ? mm_update_next_owner+0x5b0/0x5b0 [ 30.163066] ? lock_downgrade+0x740/0x740 [ 30.167202] do_group_exit+0x100/0x2e0 [ 30.171071] SyS_exit_group+0x19/0x20 [ 30.174848] ? do_group_exit+0x2e0/0x2e0 [ 30.178885] do_syscall_64+0x1d5/0x640 [ 30.182752] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.187917] RIP: 0033:0x7f1f65fe8ca9 [ 30.191602] RSP: 002b:00007ffd9fd0f5c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 30.199282] RAX: ffffffffffffffda RBX: 00007f1f6605c270 RCX: 00007f1f65fe8ca9 [ 30.206874] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 30.214117] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000000000 [ 30.221362] R10: 00000000ffffffff R11: 0000000000000246 R12: 00007f1f6605c270 [ 30.228607] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 30.235853] [ 30.237468] The buggy address belongs to the page: [ 30.242371] page:ffffea0002e941c0 count:1 mapcount:0 mapping: (null) index:0x0 [ 30.250486] flags: 0xfff00000000800(reserved) [ 30.254955] raw: 00fff00000000800 0000000000000000 0000000000000000 00000001ffffffff [ 30.262809] raw: ffffea0002e941e0 ffffea0002e941e0 0000000000000000 0000000000000000 [ 30.270660] page dumped because: kasan: bad access detected [ 30.276338] [ 30.277936] Memory state around the buggy address: [ 30.282852] ffff8880ba507b80: 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 f1 f1 [ 30.290183] ffff8880ba507c00: 04 f2 00 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 [ 30.297530] >ffff8880ba507c80: f1 f1 f1 f1 04 f3 f3 f3 00 00 00 00 00 00 00 00 [ 30.304873] ^ [ 30.309775] ffff8880ba507d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.317106] ffff8880ba507d80: 00 00 00 00 00 00 f1 f1 f1 f1 00 f3 f3 f3 00 00 [ 30.324432] ================================================================== [ 30.331777] Disabling lock debugging due to kernel taint [ 30.337199] Kernel panic - not syncing: panic_on_warn set ... [ 30.337199] [ 30.344532] CPU: 1 PID: 7960 Comm: syz-executor361 Tainted: G B 4.14.292-syzkaller #0 [ 30.353600] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 [ 30.362924] Call Trace: [ 30.365484] [ 30.367630] dump_stack+0x1b2/0x281 [ 30.371230] panic+0x1f9/0x42d [ 30.374395] ? add_taint.cold+0x16/0x16 [ 30.378343] ? lock_downgrade+0x740/0x740 [ 30.382465] kasan_end_report+0x43/0x49 [ 30.386414] kasan_report_error.cold+0xa7/0x191 [ 30.391058] ? unwind_next_frame+0x146f/0x17d0 [ 30.395614] __asan_report_load8_noabort+0x68/0x70 [ 30.400516] ? unwind_next_frame+0x146f/0x17d0 [ 30.405070] unwind_next_frame+0x146f/0x17d0 [ 30.409452] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.414788] ? lock_downgrade+0x740/0x740 [ 30.418911] ? lock_downgrade+0x740/0x740 [ 30.423031] ? deref_stack_reg+0x1a0/0x1a0 [ 30.427240] ? check_preemption_disabled+0x35/0x240 [ 30.432247] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.437592] perf_callchain_kernel+0x38c/0x520 [ 30.442148] ? arch_perf_update_userpage+0x300/0x300 [ 30.447232] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.452577] ? check_preemption_disabled+0x35/0x240 [ 30.457572] get_perf_callchain+0x2de/0x740 [ 30.461869] ? put_callchain_buffers+0x60/0x60 [ 30.466423] ? put_callchain_buffers+0x60/0x60 [ 30.470976] ? perf_tp_event+0x3e0/0x6e0 [ 30.475015] perf_callchain+0x147/0x190 [ 30.478964] perf_prepare_sample+0xc9a/0x1370 [ 30.483433] ? perf_output_sample+0x16f0/0x16f0 [ 30.488088] perf_event_output_forward+0xc9/0x1f0 [ 30.492904] ? perf_prepare_sample+0x1370/0x1370 [ 30.497640] ? perf_event_output_forward+0x143/0x1f0 [ 30.502719] ? perf_prepare_sample+0x1370/0x1370 [ 30.507454] ? check_preemption_disabled+0x35/0x240 [ 30.512444] __perf_event_overflow+0x113/0x310 [ 30.517003] perf_swevent_event+0x3c8/0x460 [ 30.521302] perf_tp_event+0x540/0x6e0 [ 30.525163] ? check_preemption_disabled+0x35/0x240 [ 30.530154] ? perf_swevent_event+0x460/0x460 [ 30.534622] ? __save_stack_trace+0x63/0x160 [ 30.539019] ? deref_stack_reg+0x124/0x1a0 [ 30.543229] ? is_bpf_text_address+0x91/0x150 [ 30.547701] ? lock_acquire+0x170/0x3f0 [ 30.551649] ? lock_downgrade+0x740/0x740 [ 30.555773] ? is_bpf_text_address+0xb8/0x150 [ 30.560253] ? kernel_text_address+0xbd/0xf0 [ 30.564640] ? perf_trace_run_bpf_submit+0x119/0x200 [ 30.569757] ? check_preemption_disabled+0x35/0x240 [ 30.574759] perf_trace_run_bpf_submit+0x119/0x200 [ 30.579670] perf_trace_lock+0x2d6/0x490 [ 30.583737] ? perf_trace_lock_acquire+0x510/0x510 [ 30.588696] ? unmap_single_vma+0x147/0x2b0 [ 30.593008] ? perf_trace_lock_acquire+0x510/0x510 [ 30.597912] ? do_syscall_64+0x1d5/0x640 [ 30.601951] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.607290] ? free_object+0xe4/0x240 [ 30.611066] ? perf_trace_lock_acquire+0x510/0x510 [ 30.615969] lock_release+0x4df/0x870 [ 30.619745] ? lock_acquire+0x170/0x3f0 [ 30.623698] ? lock_downgrade+0x740/0x740 [ 30.627826] ? lock_acquire+0x170/0x3f0 [ 30.631775] _raw_spin_unlock_irqrestore+0x1b/0xe0 [ 30.637624] free_object+0xe4/0x240 [ 30.641235] debug_check_no_obj_freed+0x372/0x680 [ 30.646054] ? mark_held_locks+0xa6/0xf0 [ 30.650091] ? free_uid+0x24d/0x330 [ 30.653693] ? debug_object_activate+0x490/0x490 [ 30.658431] kmem_cache_free+0x156/0x2b0 [ 30.662466] ? profiling_store+0xb0/0xb0 [ 30.666504] rcu_process_callbacks+0x780/0x1180 [ 30.671146] ? note_gp_changes+0x2f0/0x2f0 [ 30.675357] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 30.680781] __do_softirq+0x24d/0x9ff [ 30.684557] ? check_preemption_disabled+0x35/0x240 [ 30.689544] irq_exit+0x193/0x240 [ 30.692970] smp_apic_timer_interrupt+0x141/0x5e0 [ 30.697786] apic_timer_interrupt+0x93/0xa0 [ 30.702078] [ 30.704291] RIP: 0010:lock_release+0x41e/0x870 [ 30.708842] RSP: 0018:ffff8880a29b79c0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 [ 30.716522] RAX: 1ffffffff11e1359 RBX: 1ffff11014536f3b RCX: 1ffff11012e0e5e6 [ 30.723763] RDX: dffffc0000000000 RSI: 0000000000000002 RDI: 0000000000000286 [ 30.731006] RBP: ffff888097072680 R08: 0000000000000000 R09: 0000000000000001 [ 30.738247] R10: ffff8880a29b7880 R11: 0000000000000001 R12: 4266a10b7c0d49cf [ 30.745491] R13: 0000000000000003 R14: ffff888097072680 R15: 0000000000000002 [ 30.752740] ? check_preemption_disabled+0x35/0x240 [ 30.757730] ? lock_downgrade+0x740/0x740 [ 30.761880] page_remove_rmap+0x96/0xe0 [ 30.765829] unmap_page_range+0xf41/0x1d90 [ 30.770039] ? vm_normal_page_pmd+0x340/0x340 [ 30.774507] unmap_single_vma+0x147/0x2b0 [ 30.778636] unmap_vmas+0x9d/0x160 [ 30.782148] exit_mmap+0x270/0x4d0 [ 30.785666] ? SyS_remap_file_pages+0x6a0/0x6a0 [ 30.790309] ? kmem_cache_free+0x23a/0x2b0 [ 30.794518] ? __khugepaged_exit+0x29b/0x3c0 [ 30.798899] mmput+0xfa/0x420 [ 30.801981] do_exit+0x984/0x2850 [ 30.805412] ? __do_page_fault+0x571/0xad0 [ 30.809619] ? mm_update_next_owner+0x5b0/0x5b0 [ 30.814263] ? lock_downgrade+0x740/0x740 [ 30.818382] do_group_exit+0x100/0x2e0 [ 30.822243] SyS_exit_group+0x19/0x20 [ 30.826015] ? do_group_exit+0x2e0/0x2e0 [ 30.830052] do_syscall_64+0x1d5/0x640 [ 30.833919] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.839080] RIP: 0033:0x7f1f65fe8ca9 [ 30.842765] RSP: 002b:00007ffd9fd0f5c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 30.850448] RAX: ffffffffffffffda RBX: 00007f1f6605c270 RCX: 00007f1f65fe8ca9 [ 30.857695] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 30.864936] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000000000 [ 30.872180] R10: 00000000ffffffff R11: 0000000000000246 R12: 00007f1f6605c270 [ 30.879421] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 31.976394] Shutting down cpus with NMI [ 31.980547] Kernel Offset: disabled [ 31.984155] Rebooting in 86400 seconds..