Warning: Permanently added '10.128.0.206' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 77.211384][ T9019] IPVS: ftp: loaded support on port[0] = 21 [ 77.270760][ T9027] kasan: CONFIG_KASAN_INLINE enabled [ 77.276300][ T9027] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 77.284479][ T9027] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 77.291415][ T9027] CPU: 1 PID: 9027 Comm: syz-executor906 Not tainted 5.4.0-rc4-next-20191024 #0 [ 77.301648][ T9027] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.311709][ T9027] RIP: 0010:ip6_sublist_rcv+0x5c9/0x930 [ 77.317238][ T9027] Code: 0f 85 73 01 00 00 e8 06 63 24 fb 48 8b 85 00 ff ff ff 48 8d b8 10 0f 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 44 03 00 00 48 8b 85 00 ff ff ff 4c 8b a0 10 0f [ 77.336843][ T9027] RSP: 0018:ffff8880956af3c0 EFLAGS: 00010206 [ 77.342901][ T9027] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff864f0e0e [ 77.350940][ T9027] RDX: 00000000000001e2 RSI: ffffffff864f0c6a RDI: 0000000000000f10 [ 77.358908][ T9027] RBP: ffff8880956af4f0 R08: ffff8880a1778040 R09: ffffed1015d26b7d [ 77.366880][ T9027] R10: ffffed1015d26b7c R11: ffff8880ae935be3 R12: 0000000000000001 [ 77.374831][ T9027] R13: ffff8880956af4c8 R14: ffff8880956af558 R15: ffff8880956af680 [ 77.382797][ T9027] FS: 0000000000819880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 77.391741][ T9027] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.398318][ T9027] CR2: 0000000020000780 CR3: 0000000089dec000 CR4: 00000000001406e0 [ 77.406280][ T9027] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.414229][ T9027] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.422193][ T9027] Call Trace: [ 77.425494][ T9027] ? ip6_rcv_finish+0x310/0x310 [ 77.430337][ T9027] ? kfree_skbmem+0xca/0x150 [ 77.434911][ T9027] ? kfree_skb+0x10e/0x3c0 [ 77.439336][ T9027] ? ip6_rcv_core.isra.0+0x1047/0x1c30 [ 77.444817][ T9027] ipv6_list_rcv+0x373/0x4b0 [ 77.449388][ T9027] ? ipv6_rcv+0x420/0x420 [ 77.453715][ T9027] ? ipv6_rcv+0x420/0x420 [ 77.458051][ T9027] __netif_receive_skb_list_core+0x5fc/0x9d0 [ 77.464030][ T9027] ? ktime_get_with_offset+0x135/0x360 [ 77.469590][ T9027] ? ktime_get_with_offset+0x135/0x360 [ 77.475094][ T9027] ? process_backlog+0x750/0x750 [ 77.480065][ T9027] ? lock_acquire+0x190/0x410 [ 77.484725][ T9027] ? __kasan_check_read+0x11/0x20 [ 77.490342][ T9027] netif_receive_skb_list_internal+0x7eb/0xe50 [ 77.496481][ T9027] ? __netif_receive_skb_list_core+0x9d0/0x9d0 [ 77.502614][ T9027] ? ipv6_gro_receive+0x96f/0x14f0 [ 77.507705][ T9027] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 77.513929][ T9027] ? eth_type_trans+0x3a5/0x760 [ 77.518846][ T9027] gro_normal_list.part.0+0x1e/0xb0 [ 77.524023][ T9027] gro_normal_one+0x184/0x1d0 [ 77.528684][ T9027] napi_gro_frags+0x915/0xd00 [ 77.533366][ T9027] tun_get_user+0x2e8e/0x3f80 [ 77.538033][ T9027] ? __kasan_check_read+0x11/0x20 [ 77.543059][ T9027] ? tun_build_skb.isra.0+0x1380/0x1380 [ 77.548611][ T9027] ? rcu_read_lock_held+0x9c/0xb0 [ 77.553644][ T9027] ? __kasan_check_read+0x11/0x20 [ 77.558683][ T9027] tun_chr_write_iter+0xbd/0x156 [ 77.563620][ T9027] do_iter_readv_writev+0x5f8/0x8f0 [ 77.568816][ T9027] ? no_seek_end_llseek_size+0x70/0x70 [ 77.574261][ T9027] ? apparmor_file_permission+0x25/0x30 [ 77.579791][ T9027] ? rw_verify_area+0x126/0x360 [ 77.584634][ T9027] do_iter_write+0x184/0x610 [ 77.589219][ T9027] ? dup_iter+0x260/0x260 [ 77.593632][ T9027] vfs_writev+0x1b3/0x2f0 [ 77.597995][ T9027] ? vfs_iter_write+0xb0/0xb0 [ 77.602657][ T9027] ? find_held_lock+0x35/0x130 [ 77.607428][ T9027] ? __do_page_fault+0x56a/0xdd0 [ 77.612377][ T9027] ? lock_downgrade+0x920/0x920 [ 77.617418][ T9027] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 77.623648][ T9027] ? __fget_light+0x1a9/0x230 [ 77.628320][ T9027] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 77.634539][ T9027] do_writev+0x15b/0x330 [ 77.638803][ T9027] ? vfs_writev+0x2f0/0x2f0 [ 77.643305][ T9027] ? do_syscall_64+0x26/0x760 [ 77.647972][ T9027] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 77.654165][ T9027] ? do_syscall_64+0x26/0x760 [ 77.658841][ T9027] __x64_sys_writev+0x75/0xb0 [ 77.663501][ T9027] do_syscall_64+0xfa/0x760 [ 77.667989][ T9027] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 77.673874][ T9027] RIP: 0033:0x441d80 [ 77.677758][ T9027] Code: 05 48 3d 01 f0 ff ff 0f 83 5d 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 83 3d 91 92 29 00 00 75 14 b8 14 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 34 09 fc ff c3 48 83 ec 08 e8 ba 2b 00 00 [ 77.697339][ T9027] RSP: 002b:00007ffc73f8e2e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 77.705736][ T9027] RAX: ffffffffffffffda RBX: 00007ffc73f8e300 RCX: 0000000000441d80 [ 77.713698][ T9027] RDX: 0000000000000001 RSI: 00007ffc73f8e330 RDI: 00000000000000f0 [ 77.721658][ T9027] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000004 [ 77.729695][ T9027] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000012dae [ 77.737644][ T9027] R13: 0000000000402bd0 R14: 0000000000000000 R15: 0000000000000000 [ 77.746206][ T9027] Modules linked in: [ 77.750127][ T9027] ---[ end trace b92638c9e1a03392 ]--- [ 77.755707][ T9027] RIP: 0010:ip6_sublist_rcv+0x5c9/0x930 [ 77.761234][ T9027] Code: 0f 85 73 01 00 00 e8 06 63 24 fb 48 8b 85 00 ff ff ff 48 8d b8 10 0f 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 44 03 00 00 48 8b 85 00 ff ff ff 4c 8b a0 10 0f [ 77.780851][ T9027] RSP: 0018:ffff8880956af3c0 EFLAGS: 00010206 [ 77.787712][ T9027] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff864f0e0e [ 77.795696][ T9027] RDX: 00000000000001e2 RSI: ffffffff864f0c6a RDI: 0000000000000f10 [ 77.803672][ T9027] RBP: ffff8880956af4f0 R08: ffff8880a1778040 R09: ffffed1015d26b7d [ 77.811670][ T9027] R10: ffffed1015d26b7c R11: ffff8880ae935be3 R12: 0000000000000001 [ 77.819655][ T9027] R13: ffff8880956af4c8 R14: ffff8880956af558 R15: ffff8880956af680 [ 77.827643][ T9027] FS: 0000000000819880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 77.836583][ T9027] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.843144][ T9027] CR2: 0000000020000780 CR3: 0000000089dec000 CR4: 00000000001406e0 [ 77.851130][ T9027] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.859123][ T9027] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.867129][ T9027] Kernel panic - not syncing: Fatal exception in interrupt [ 77.875889][ T9027] Kernel Offset: disabled [ 77.880214][ T9027] Rebooting in 86400 seconds..