[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.180' (ECDSA) to the list of known hosts. 2021/05/01 10:28:22 fuzzer started 2021/05/01 10:28:22 dialing manager at 10.128.0.169:44661 2021/05/01 10:28:22 syscalls: 3571 2021/05/01 10:28:22 code coverage: enabled 2021/05/01 10:28:22 comparison tracing: enabled 2021/05/01 10:28:22 extra coverage: enabled 2021/05/01 10:28:22 setuid sandbox: enabled 2021/05/01 10:28:22 namespace sandbox: enabled 2021/05/01 10:28:22 Android sandbox: /sys/fs/selinux/policy does not exist 2021/05/01 10:28:22 fault injection: enabled 2021/05/01 10:28:22 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/05/01 10:28:22 net packet injection: enabled 2021/05/01 10:28:22 net device setup: enabled 2021/05/01 10:28:22 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2021/05/01 10:28:22 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/05/01 10:28:22 USB emulation: enabled 2021/05/01 10:28:22 hci packet injection: enabled 2021/05/01 10:28:22 wifi device emulation: enabled 2021/05/01 10:28:22 802.15.4 emulation: enabled 2021/05/01 10:28:23 fetching corpus: 0, signal 0/2000 (executing program) 2021/05/01 10:28:23 fetching corpus: 50, signal 51759/55487 (executing program) 2021/05/01 10:28:23 fetching corpus: 100, signal 84355/89707 (executing program) 2021/05/01 10:28:23 fetching corpus: 150, signal 106791/113691 (executing program) 2021/05/01 10:28:23 fetching corpus: 200, signal 132468/140756 (executing program) 2021/05/01 10:28:23 fetching corpus: 250, signal 146889/156614 (executing program) 2021/05/01 10:28:23 fetching corpus: 300, signal 160039/171125 (executing program) 2021/05/01 10:28:24 fetching corpus: 350, signal 175523/187803 (executing program) 2021/05/01 10:28:24 fetching corpus: 400, signal 186039/199618 (executing program) 2021/05/01 10:28:24 fetching corpus: 450, signal 197004/211816 (executing program) 2021/05/01 10:28:24 fetching corpus: 500, signal 206182/222253 (executing program) 2021/05/01 10:28:24 fetching corpus: 550, signal 212347/229707 (executing program) 2021/05/01 10:28:24 fetching corpus: 600, signal 221270/239814 (executing program) syzkaller login: [ 76.540743][ T8445] ================================================================== [ 76.549395][ T8445] BUG: KASAN: wild-memory-access in copyout.part.0+0xd7/0x110 [ 76.557673][ T8445] Read of size 3840 at addr 108548c02e728010 by task syz-fuzzer/8445 [ 76.565846][ T8445] [ 76.568291][ T8445] CPU: 0 PID: 8445 Comm: syz-fuzzer Not tainted 5.12.0-rc8-next-20210423-syzkaller #0 [ 76.577860][ T8445] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.588265][ T8445] Call Trace: [ 76.591630][ T8445] dump_stack+0x141/0x1d7 [ 76.596188][ T8445] ? copyout.part.0+0xd7/0x110 [ 76.601061][ T8445] kasan_report.cold+0x5f/0xd8 [ 76.605840][ T8445] ? copyout.part.0+0xd7/0x110 [ 76.611177][ T8445] kasan_check_range+0x13d/0x180 [ 76.616553][ T8445] copyout.part.0+0xd7/0x110 [ 76.621320][ T8445] _copy_to_iter+0x2b4/0x1850 [ 76.626012][ T8445] ? lock_chain_count+0x20/0x20 [ 76.630874][ T8445] ? _copy_from_iter_nocache+0x1440/0x1440 [ 76.636813][ T8445] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 76.643376][ T8445] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 76.649255][ T8445] ? __virt_addr_valid+0x5d/0x2d0 [ 76.654379][ T8445] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 76.660638][ T8445] ? __phys_addr_symbol+0x2c/0x70 [ 76.665764][ T8445] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 76.671571][ T8445] ? __check_object_size+0x18a/0x3f0 [ 76.676870][ T8445] simple_copy_to_iter+0x4c/0x70 [ 76.682091][ T8445] __skb_datagram_iter+0x4a7/0x770 [ 76.687329][ T8445] ? zerocopy_sg_from_iter+0x110/0x110 [ 76.695398][ T8445] skb_copy_datagram_iter+0x40/0x50 [ 76.701546][ T8445] tcp_recvmsg_locked+0x1048/0x22f0 [ 76.707032][ T8445] ? tcp_splice_read+0x8b0/0x8b0 [ 76.712152][ T8445] ? mark_held_locks+0x9f/0xe0 [ 76.717530][ T8445] ? __local_bh_enable_ip+0xa0/0x120 [ 76.726248][ T8445] tcp_recvmsg+0x134/0x550 [ 76.730905][ T8445] ? tcp_recvmsg_locked+0x22f0/0x22f0 [ 76.736285][ T8445] ? aa_sk_perm+0x311/0xab0 [ 76.741345][ T8445] inet_recvmsg+0x11b/0x5e0 [ 76.746230][ T8445] ? inet_sendpage+0x140/0x140 [ 76.751339][ T8445] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 76.758452][ T8445] ? security_socket_recvmsg+0x8f/0xc0 [ 76.764017][ T8445] sock_read_iter+0x33c/0x470 [ 76.769121][ T8445] ? ____sys_recvmsg+0x600/0x600 [ 76.774163][ T8445] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 76.780525][ T8445] ? fsnotify+0xa58/0x1060 [ 76.785028][ T8445] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 76.791295][ T8445] new_sync_read+0x5b7/0x6e0 [ 76.795983][ T8445] ? ksys_lseek+0x1b0/0x1b0 [ 76.800668][ T8445] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 76.806858][ T8445] vfs_read+0x35c/0x570 [ 76.811013][ T8445] ksys_read+0x1ee/0x250 [ 76.815255][ T8445] ? vfs_write+0xa40/0xa40 [ 76.820167][ T8445] ? syscall_enter_from_user_mode+0x27/0x70 [ 76.826364][ T8445] do_syscall_64+0x3a/0xb0 [ 76.831067][ T8445] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 76.837257][ T8445] RIP: 0033:0x4af19b [ 76.841345][ T8445] Code: fb ff eb bd e8 a6 b6 fb ff e9 61 ff ff ff cc e8 9b 82 fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 76.861488][ T8445] RSP: 002b:000000c000071828 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 76.869995][ T8445] RAX: ffffffffffffffda RBX: 000000c00001c000 RCX: 00000000004af19b [ 76.878248][ T8445] RDX: 0000000000001000 RSI: 000000c0001d8000 RDI: 0000000000000006 [ 76.886489][ T8445] RBP: 000000c000071878 R08: 0000000000000001 R09: 0000000000000002 [ 76.894757][ T8445] R10: 00000000000027bf R11: 0000000000000212 R12: ffffffffffffffff [ 76.903288][ T8445] R13: 0000000000001000 R14: 0000000000000010 R15: 0000000000000002 [ 76.911525][ T8445] ================================================================== [ 76.920302][ T8445] Disabling lock debugging due to kernel taint [ 76.928165][ T8445] Kernel panic - not syncing: panic_on_warn set ... [ 76.934931][ T8445] CPU: 1 PID: 8445 Comm: syz-fuzzer Tainted: G B 5.12.0-rc8-next-20210423-syzkaller #0 [ 76.945951][ T8445] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.956896][ T8445] Call Trace: [ 76.960183][ T8445] dump_stack+0x141/0x1d7 [ 76.964689][ T8445] panic+0x306/0x73d [ 76.968674][ T8445] ? __warn_printk+0xf3/0xf3 [ 76.973564][ T8445] ? preempt_schedule_common+0x59/0xc0 [ 76.979125][ T8445] ? copyout.part.0+0xd7/0x110 [ 76.984088][ T8445] ? preempt_schedule_thunk+0x16/0x18 [ 76.989549][ T8445] ? trace_hardirqs_on+0x38/0x1c0 [ 76.994640][ T8445] ? trace_hardirqs_on+0x51/0x1c0 [ 76.999846][ T8445] ? copyout.part.0+0xd7/0x110 [ 77.004810][ T8445] ? copyout.part.0+0xd7/0x110 [ 77.009762][ T8445] end_report.cold+0x5a/0x5a [ 77.014354][ T8445] kasan_report.cold+0x6a/0xd8 [ 77.019124][ T8445] ? copyout.part.0+0xd7/0x110 [ 77.024068][ T8445] kasan_check_range+0x13d/0x180 [ 77.029092][ T8445] copyout.part.0+0xd7/0x110 [ 77.033847][ T8445] _copy_to_iter+0x2b4/0x1850 [ 77.038540][ T8445] ? lock_chain_count+0x20/0x20 [ 77.043461][ T8445] ? _copy_from_iter_nocache+0x1440/0x1440 [ 77.049630][ T8445] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 77.056149][ T8445] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 77.061867][ T8445] ? __virt_addr_valid+0x5d/0x2d0 [ 77.066981][ T8445] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 77.073509][ T8445] ? __phys_addr_symbol+0x2c/0x70 [ 77.078540][ T8445] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 77.084359][ T8445] ? __check_object_size+0x18a/0x3f0 [ 77.089653][ T8445] simple_copy_to_iter+0x4c/0x70 [ 77.094864][ T8445] __skb_datagram_iter+0x4a7/0x770 [ 77.099973][ T8445] ? zerocopy_sg_from_iter+0x110/0x110 [ 77.105529][ T8445] skb_copy_datagram_iter+0x40/0x50 [ 77.110837][ T8445] tcp_recvmsg_locked+0x1048/0x22f0 [ 77.116296][ T8445] ? tcp_splice_read+0x8b0/0x8b0 [ 77.121314][ T8445] ? mark_held_locks+0x9f/0xe0 [ 77.126357][ T8445] ? __local_bh_enable_ip+0xa0/0x120 [ 77.131740][ T8445] tcp_recvmsg+0x134/0x550 [ 77.136148][ T8445] ? tcp_recvmsg_locked+0x22f0/0x22f0 [ 77.141791][ T8445] ? aa_sk_perm+0x311/0xab0 [ 77.146407][ T8445] inet_recvmsg+0x11b/0x5e0 [ 77.150911][ T8445] ? inet_sendpage+0x140/0x140 [ 77.155668][ T8445] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 77.162164][ T8445] ? security_socket_recvmsg+0x8f/0xc0 [ 77.167616][ T8445] sock_read_iter+0x33c/0x470 [ 77.172287][ T8445] ? ____sys_recvmsg+0x600/0x600 [ 77.177227][ T8445] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 77.183634][ T8445] ? fsnotify+0xa58/0x1060 [ 77.188055][ T8445] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 77.194406][ T8445] new_sync_read+0x5b7/0x6e0 [ 77.199095][ T8445] ? ksys_lseek+0x1b0/0x1b0 [ 77.203679][ T8445] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 77.209937][ T8445] vfs_read+0x35c/0x570 [ 77.214444][ T8445] ksys_read+0x1ee/0x250 [ 77.218783][ T8445] ? vfs_write+0xa40/0xa40 [ 77.223303][ T8445] ? syscall_enter_from_user_mode+0x27/0x70 [ 77.229206][ T8445] do_syscall_64+0x3a/0xb0 [ 77.233716][ T8445] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 77.239781][ T8445] RIP: 0033:0x4af19b [ 77.243753][ T8445] Code: fb ff eb bd e8 a6 b6 fb ff e9 61 ff ff ff cc e8 9b 82 fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 77.263391][ T8445] RSP: 002b:000000c000071828 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 77.272239][ T8445] RAX: ffffffffffffffda RBX: 000000c00001c000 RCX: 00000000004af19b [ 77.280552][ T8445] RDX: 0000000000001000 RSI: 000000c0001d8000 RDI: 0000000000000006 [ 77.288611][ T8445] RBP: 000000c000071878 R08: 0000000000000001 R09: 0000000000000002 [ 77.297104][ T8445] R10: 00000000000027bf R11: 0000000000000212 R12: ffffffffffffffff [ 77.305177][ T8445] R13: 0000000000001000 R14: 0000000000000010 R15: 0000000000000002 [ 77.314690][ T8445] Kernel Offset: disabled [ 77.319205][ T8445] Rebooting in 86400 seconds..