Warning: Permanently added '10.128.0.180' (ECDSA) to the list of known hosts. 2022/09/21 09:58:14 fuzzer started 2022/09/21 09:58:14 dialing manager at 10.128.0.163:35635 2022/09/21 09:58:14 syscalls: 3525 2022/09/21 09:58:14 code coverage: enabled 2022/09/21 09:58:14 comparison tracing: ioctl(KCOV_TRACE_CMP) failed: invalid argument 2022/09/21 09:58:14 extra coverage: extra coverage is not supported by the kernel 2022/09/21 09:58:14 delay kcov mmap: mmap returned an invalid pointer 2022/09/21 09:58:14 setuid sandbox: enabled 2022/09/21 09:58:14 namespace sandbox: enabled 2022/09/21 09:58:14 Android sandbox: /sys/fs/selinux/policy does not exist 2022/09/21 09:58:14 fault injection: enabled 2022/09/21 09:58:14 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2022/09/21 09:58:14 net packet injection: enabled 2022/09/21 09:58:14 net device setup: enabled 2022/09/21 09:58:14 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2022/09/21 09:58:14 devlink PCI setup: PCI device 0000:00:10.0 is not available 2022/09/21 09:58:14 USB emulation: /dev/raw-gadget does not exist 2022/09/21 09:58:14 hci packet injection: enabled 2022/09/21 09:58:14 wifi device emulation: kernel 4.17 required (have 4.14.294-syzkaller) 2022/09/21 09:58:14 802.15.4 emulation: /sys/bus/platform/devices/mac802154_hwsim does not exist 2022/09/21 09:58:14 fetching corpus: 0, signal 0/2000 (executing program) 2022/09/21 09:58:14 fetching corpus: 50, signal 50413/54160 (executing program) 2022/09/21 09:58:15 fetching corpus: 100, signal 74288/79753 (executing program) 2022/09/21 09:58:15 fetching corpus: 150, signal 88007/95168 (executing program) 2022/09/21 09:58:15 fetching corpus: 200, signal 105498/114261 (executing program) 2022/09/21 09:58:15 fetching corpus: 250, signal 117691/128072 (executing program) 2022/09/21 09:58:15 fetching corpus: 300, signal 131495/143376 (executing program) 2022/09/21 09:58:16 fetching corpus: 350, signal 141670/155014 (executing program) 2022/09/21 09:58:16 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(executing program) 2022/09/21 09:58:45 fetching corpus: 8150, signal 487481/626827 (executing program) 2022/09/21 09:58:46 fetching corpus: 8200, signal 488372/628213 (executing program) 2022/09/21 09:58:46 fetching corpus: 8250, signal 489209/629603 (executing program) 2022/09/21 09:58:46 fetching corpus: 8300, signal 490148/631028 (executing program) syzkaller login: [ 60.018153] ================================================================== [ 60.025680] BUG: KASAN: stack-out-of-bounds in unwind_next_frame+0x1360/0x17d0 [ 60.033040] Read of size 8 at addr ffff8880b3a6fb68 by task syz-fuzzer/7962 [ 60.040123] [ 60.041736] CPU: 0 PID: 7962 Comm: syz-fuzzer Not tainted 4.14.294-syzkaller #0 [ 60.049162] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 [ 60.058491] Call Trace: [ 60.061050] [ 60.063211] dump_stack+0x1b2/0x281 [ 60.066838] print_address_description.cold+0x54/0x1d3 [ 60.072109] kasan_report_error.cold+0x8a/0x191 [ 60.076756] ? unwind_next_frame+0x1360/0x17d0 [ 60.081315] __asan_report_load8_noabort+0x68/0x70 [ 60.086219] ? unwind_next_frame+0x1360/0x17d0 [ 60.090777] unwind_next_frame+0x1360/0x17d0 [ 60.095162] ? retint_kernel+0x2d/0x2d [ 60.099027] ? deref_stack_reg+0x1a0/0x1a0 [ 60.103240] ? retint_kernel+0x2d/0x2d [ 60.107106] __save_stack_trace+0x90/0x160 [ 60.111332] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 60.116764] ? ep_read_events_proc+0x440/0x440 [ 60.121323] kasan_kmalloc+0xeb/0x160 [ 60.125102] ? kasan_kmalloc+0xeb/0x160 [ 60.129053] ? kmem_cache_alloc_node+0x133/0x410 [ 60.133785] ? __alloc_skb+0x5c/0x510 [ 60.137561] ? __napi_alloc_skb+0x57/0x2d0 [ 60.141772] ? page_to_skb+0x7b/0x820 [ 60.145567] ? receive_buf+0x1f71/0x4d70 [ 60.149603] ? virtnet_poll+0x4b7/0x960 [ 60.153552] ? net_rx_action+0x466/0xfd0 [ 60.157589] ? __do_softirq+0x24d/0x9ff [ 60.161540] ? irq_exit+0x193/0x240 [ 60.165142] ? do_IRQ+0x112/0x1d0 [ 60.168570] ? common_interrupt+0x93/0x93 [ 60.172695] ? lock_acquire+0x97/0x3f0 [ 60.176563] ? ep_scan_ready_list+0x637/0x7e0 [ 60.181033] ? retint_kernel+0x2d/0x2d [ 60.184900] ? ip_local_deliver+0x460/0x460 [ 60.189199] ? consume_skb+0x27d/0x380 [ 60.193064] ? ip_local_deliver_finish+0xab0/0xab0 [ 60.197973] ? __lock_acquire+0x5fc/0x3f20 [ 60.202186] ? is_skb_forwardable+0x1e0/0x1e0 [ 60.206660] ? tcp4_gro_receive+0x498/0x790 [ 60.210957] ? should_fail+0x327/0x3f0 [ 60.214825] ? kmem_cache_alloc_node+0x2f8/0x410 [ 60.219556] kmem_cache_alloc_node+0x133/0x410 [ 60.224117] __alloc_skb+0x5c/0x510 [ 60.227720] __napi_alloc_skb+0x57/0x2d0 [ 60.231777] page_to_skb+0x7b/0x820 [ 60.235382] receive_buf+0x1f71/0x4d70 [ 60.239251] ? virtnet_xdp_xmit.constprop.0+0x780/0x780 [ 60.244590] ? __lock_acquire+0x5fc/0x3f20 [ 60.248803] ? detach_buf+0x422/0x580 [ 60.252579] ? __lock_acquire+0x5fc/0x3f20 [ 60.256805] ? virtqueue_get_buf_ctx+0x3d9/0x6b0 [ 60.261547] ? check_preemption_disabled+0x35/0x240 [ 60.266538] virtnet_poll+0x4b7/0x960 [ 60.270314] ? try_fill_recv+0x17b0/0x17b0 [ 60.274526] ? net_rx_action+0x244/0xfd0 [ 60.278565] net_rx_action+0x466/0xfd0 [ 60.282433] ? napi_gro_frags+0x8f0/0x8f0 [ 60.286558] ? sched_clock+0x2a/0x40 [ 60.290247] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 60.295676] __do_softirq+0x24d/0x9ff [ 60.299452] ? check_preemption_disabled+0x35/0x240 [ 60.304446] irq_exit+0x193/0x240 [ 60.307875] do_IRQ+0x112/0x1d0 [ 60.311131] common_interrupt+0x93/0x93 [ 60.315082] [ 60.317296] RIP: 0010:lock_acquire+0x97/0x3f0 [ 60.321762] RSP: 0018:ffff8880b3a6fa48 EFLAGS: 00000286 ORIG_RAX: ffffffffffffffdd [ 60.329444] RAX: 1ffffffff11e1358 RBX: ffff8880b52c0540 RCX: 0000000000000000 [ 60.336689] RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff8880b52c0dc4 [ 60.343951] RBP: ffff8880b3247358 R08: 0000000000000001 R09: 0000000000000000 [ 60.351202] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 60.358450] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 [ 60.365718] ? ep_scan_ready_list+0x637/0x7e0 [ 60.370196] ep_scan_ready_list+0x637/0x7e0 [ 60.374499] ? __mutex_lock+0xc4/0x1310 [ 60.378449] ? ep_scan_ready_list+0x637/0x7e0 [ 60.382919] ? retint_kernel+0x2d/0x2d [ 60.386787] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 60.391793] ? ep_scan_ready_list+0x637/0x7e0 [ 60.396306] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 60.401742] retint_kernel+0x2d/0x2d [ 60.405438] RIP: b32472c0:ep_send_events_proc+0x0/0x9c0 [ 60.410774] RSP: b3a6fc58:0000000000000000 EFLAGS: ffff8880b3a6fd78 ORIG_RAX: ffffffffffffffdd [ 60.419500] RAX: ffff8880b52c0540 RBX: ffffffff81967220 RCX: 1ffff1101674df87 [ 60.426747] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880b32472f8 [ 60.434007] RBP: ffff8880b32472c0 R08: 0000000000000000 R09: 0000000000000000 [ 60.441266] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b3a6fd78 [ 60.448514] R13: 0000000000000000 R14: ffff8880b3a6fc58 R15: 0000000000000000 [ 60.455766] ? ep_read_events_proc+0x440/0x440 [ 60.460328] ? ep_scan_ready_list+0x637/0x7e0 [ 60.464798] ? lock_downgrade+0x740/0x740 [ 60.468920] ? ep_eventpoll_release+0x60/0x60 [ 60.473390] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 60.478470] ? ep_poll+0x234/0xa50 [ 60.481985] ? __fget+0x23e/0x3e0 [ 60.485413] ? ep_poll_readyevents_proc+0x90/0x90 [ 60.490232] ? lock_downgrade+0x740/0x740 [ 60.494356] ? __fget+0x265/0x3e0 [ 60.497788] ? SyS_epoll_wait+0x150/0x1a0 [ 60.501929] ? SyS_epoll_pwait+0x1e9/0x230 [ 60.506143] ? SyS_epoll_wait+0x1a0/0x1a0 [ 60.510269] ? SyS_nanosleep+0x127/0x170 [ 60.514308] ? hrtimer_nanosleep+0x4b0/0x4b0 [ 60.518707] ? do_syscall_64+0x4c/0x640 [ 60.522656] ? SyS_epoll_wait+0x1a0/0x1a0 [ 60.526781] ? do_syscall_64+0x1d5/0x640 [ 60.530822] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 60.536162] [ 60.537767] The buggy address belongs to the page: [ 60.542671] page:ffffea0002ce9bc0 count:0 mapcount:0 mapping: (null) index:0x0 [ 60.550788] flags: 0xfff00000000000() [ 60.554565] raw: 00fff00000000000 0000000000000000 0000000000000000 00000000ffffffff [ 60.562420] raw: 0000000000000000 0000000100000001 0000000000000000 0000000000000000 [ 60.570271] page dumped because: kasan: bad access detected [ 60.575954] [ 60.577557] Memory state around the buggy address: [ 60.582460] ffff8880b3a6fa00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 60.589795] ffff8880b3a6fa80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 60.597128] >ffff8880b3a6fb00: 00 f1 f1 f1 f1 00 00 00 f2 00 00 00 f2 f2 f2 00 [ 60.604459] ^ [ 60.611188] ffff8880b3a6fb80: 00 00 00 00 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 [ 60.618522] ffff8880b3a6fc00: 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 f3 f3 00 [ 60.625866] ================================================================== [ 60.633219] Disabling lock debugging due to kernel taint [ 60.638724] Kernel panic - not syncing: panic_on_warn set ... [ 60.638724] [ 60.646081] CPU: 0 PID: 7962 Comm: syz-fuzzer Tainted: G B 4.14.294-syzkaller #0 [ 60.654734] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 [ 60.664097] Call Trace: [ 60.666673] [ 60.668815] dump_stack+0x1b2/0x281 [ 60.672430] panic+0x1f9/0x42d [ 60.675611] ? add_taint.cold+0x16/0x16 [ 60.679574] kasan_end_report+0x43/0x49 [ 60.683523] kasan_report_error.cold+0xa7/0x191 [ 60.688167] ? unwind_next_frame+0x1360/0x17d0 [ 60.692723] __asan_report_load8_noabort+0x68/0x70 [ 60.697628] ? unwind_next_frame+0x1360/0x17d0 [ 60.702186] unwind_next_frame+0x1360/0x17d0 [ 60.706582] ? retint_kernel+0x2d/0x2d [ 60.710458] ? deref_stack_reg+0x1a0/0x1a0 [ 60.714680] ? retint_kernel+0x2d/0x2d [ 60.718568] __save_stack_trace+0x90/0x160 [ 60.722787] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 60.728215] ? ep_read_events_proc+0x440/0x440 [ 60.732774] kasan_kmalloc+0xeb/0x160 [ 60.736550] ? kasan_kmalloc+0xeb/0x160 [ 60.740497] ? kmem_cache_alloc_node+0x133/0x410 [ 60.745232] ? __alloc_skb+0x5c/0x510 [ 60.749032] ? __napi_alloc_skb+0x57/0x2d0 [ 60.753240] ? page_to_skb+0x7b/0x820 [ 60.757014] ? receive_buf+0x1f71/0x4d70 [ 60.761047] ? virtnet_poll+0x4b7/0x960 [ 60.764995] ? net_rx_action+0x466/0xfd0 [ 60.769030] ? __do_softirq+0x24d/0x9ff [ 60.772981] ? irq_exit+0x193/0x240 [ 60.776582] ? do_IRQ+0x112/0x1d0 [ 60.780009] ? common_interrupt+0x93/0x93 [ 60.784130] ? lock_acquire+0x97/0x3f0 [ 60.787990] ? ep_scan_ready_list+0x637/0x7e0 [ 60.792457] ? retint_kernel+0x2d/0x2d [ 60.796323] ? ip_local_deliver+0x460/0x460 [ 60.800618] ? consume_skb+0x27d/0x380 [ 60.804479] ? ip_local_deliver_finish+0xab0/0xab0 [ 60.809386] ? __lock_acquire+0x5fc/0x3f20 [ 60.813600] ? is_skb_forwardable+0x1e0/0x1e0 [ 60.818071] ? tcp4_gro_receive+0x498/0x790 [ 60.822370] ? should_fail+0x327/0x3f0 [ 60.826236] ? kmem_cache_alloc_node+0x2f8/0x410 [ 60.830965] kmem_cache_alloc_node+0x133/0x410 [ 60.835524] __alloc_skb+0x5c/0x510 [ 60.839125] __napi_alloc_skb+0x57/0x2d0 [ 60.843161] page_to_skb+0x7b/0x820 [ 60.846763] receive_buf+0x1f71/0x4d70 [ 60.850630] ? virtnet_xdp_xmit.constprop.0+0x780/0x780 [ 60.855967] ? __lock_acquire+0x5fc/0x3f20 [ 60.860178] ? detach_buf+0x422/0x580 [ 60.863953] ? __lock_acquire+0x5fc/0x3f20 [ 60.868164] ? virtqueue_get_buf_ctx+0x3d9/0x6b0 [ 60.872894] ? check_preemption_disabled+0x35/0x240 [ 60.877887] virtnet_poll+0x4b7/0x960 [ 60.881662] ? try_fill_recv+0x17b0/0x17b0 [ 60.885873] ? net_rx_action+0x244/0xfd0 [ 60.889910] net_rx_action+0x466/0xfd0 [ 60.893792] ? napi_gro_frags+0x8f0/0x8f0 [ 60.897914] ? sched_clock+0x2a/0x40 [ 60.901602] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 60.907029] __do_softirq+0x24d/0x9ff [ 60.910809] ? check_preemption_disabled+0x35/0x240 [ 60.915801] irq_exit+0x193/0x240 [ 60.919231] do_IRQ+0x112/0x1d0 [ 60.922494] common_interrupt+0x93/0x93 [ 60.926442] [ 60.928655] RIP: 0010:lock_acquire+0x97/0x3f0 [ 60.933122] RSP: 0018:ffff8880b3a6fa48 EFLAGS: 00000286 ORIG_RAX: ffffffffffffffdd [ 60.940805] RAX: 1ffffffff11e1358 RBX: ffff8880b52c0540 RCX: 0000000000000000 [ 60.948049] RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff8880b52c0dc4 [ 60.955296] RBP: ffff8880b3247358 R08: 0000000000000001 R09: 0000000000000000 [ 60.962541] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 60.969784] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 [ 60.977037] ? ep_scan_ready_list+0x637/0x7e0 [ 60.981506] ep_scan_ready_list+0x637/0x7e0 [ 60.985805] ? __mutex_lock+0xc4/0x1310 [ 60.989754] ? ep_scan_ready_list+0x637/0x7e0 [ 60.994222] ? retint_kernel+0x2d/0x2d [ 60.998098] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 61.003089] ? ep_scan_ready_list+0x637/0x7e0 [ 61.007558] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 61.012983] retint_kernel+0x2d/0x2d [ 61.016673] RIP: b32472c0:ep_send_events_proc+0x0/0x9c0 [ 61.022024] RSP: b3a6fc58:0000000000000000 EFLAGS: ffff8880b3a6fd78 ORIG_RAX: ffffffffffffffdd [ 61.030745] RAX: ffff8880b52c0540 RBX: ffffffff81967220 RCX: 1ffff1101674df87 [ 61.037990] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880b32472f8 [ 61.045234] RBP: ffff8880b32472c0 R08: 0000000000000000 R09: 0000000000000000 [ 61.052478] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b3a6fd78 [ 61.059723] R13: 0000000000000000 R14: ffff8880b3a6fc58 R15: 0000000000000000 [ 61.066991] ? ep_read_events_proc+0x440/0x440 [ 61.071549] ? ep_scan_ready_list+0x637/0x7e0 [ 61.076021] ? lock_downgrade+0x740/0x740 [ 61.080142] ? ep_eventpoll_release+0x60/0x60 [ 61.084612] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 61.089705] ? ep_poll+0x234/0xa50 [ 61.093219] ? __fget+0x23e/0x3e0 [ 61.096647] ? ep_poll_readyevents_proc+0x90/0x90 [ 61.101462] ? lock_downgrade+0x740/0x740 [ 61.105584] ? __fget+0x265/0x3e0 [ 61.109012] ? SyS_epoll_wait+0x150/0x1a0 [ 61.113137] ? SyS_epoll_pwait+0x1e9/0x230 [ 61.117363] ? SyS_epoll_wait+0x1a0/0x1a0 [ 61.121484] ? SyS_nanosleep+0x127/0x170 [ 61.125520] ? hrtimer_nanosleep+0x4b0/0x4b0 [ 61.129902] ? do_syscall_64+0x4c/0x640 [ 61.133851] ? SyS_epoll_wait+0x1a0/0x1a0 [ 61.137975] ? do_syscall_64+0x1d5/0x640 [ 61.142014] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 61.147520] Kernel Offset: disabled [ 61.151152] Rebooting in 86400 seconds..