[ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.3' (ECDSA) to the list of known hosts. 2021/05/01 09:09:58 fuzzer started 2021/05/01 09:09:58 dialing manager at 10.128.0.169:44661 2021/05/01 09:09:58 syscalls: 3571 2021/05/01 09:09:58 code coverage: enabled 2021/05/01 09:09:58 comparison tracing: enabled 2021/05/01 09:09:58 extra coverage: enabled 2021/05/01 09:09:58 setuid sandbox: enabled 2021/05/01 09:09:58 namespace sandbox: enabled 2021/05/01 09:09:58 Android sandbox: /sys/fs/selinux/policy does not exist 2021/05/01 09:09:58 fault injection: enabled 2021/05/01 09:09:58 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/05/01 09:09:58 net packet injection: enabled 2021/05/01 09:09:58 net device setup: enabled 2021/05/01 09:09:58 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2021/05/01 09:09:58 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/05/01 09:09:58 USB emulation: enabled 2021/05/01 09:09:58 hci packet injection: enabled 2021/05/01 09:09:58 wifi device emulation: enabled 2021/05/01 09:09:58 802.15.4 emulation: enabled 2021/05/01 09:09:58 fetching corpus: 0, signal 0/2000 (executing program) 2021/05/01 09:09:59 fetching corpus: 50, signal 52860/56598 (executing program) 2021/05/01 09:09:59 fetching corpus: 100, signal 84798/90151 (executing program) 2021/05/01 09:09:59 fetching corpus: 150, signal 104303/111245 (executing program) 2021/05/01 09:09:59 fetching corpus: 200, signal 121986/130443 (executing program) 2021/05/01 09:09:59 fetching corpus: 250, signal 136328/146267 (executing program) 2021/05/01 09:09:59 fetching corpus: 300, signal 149288/160683 (executing program) 2021/05/01 09:09:59 fetching corpus: 350, signal 166038/178733 (executing program) 2021/05/01 09:09:59 fetching corpus: 400, signal 181101/195093 (executing program) 2021/05/01 09:10:00 fetching corpus: 450, signal 198763/213827 (executing program) 2021/05/01 09:10:00 fetching corpus: 500, signal 207402/223738 (executing program) 2021/05/01 09:10:00 fetching corpus: 550, signal 215405/232942 (executing program) syzkaller login: [ 76.289594][ T8448] ================================================================== [ 76.297851][ T8448] BUG: KASAN: wild-memory-access in copyout.part.0+0xd7/0x110 [ 76.305346][ T8448] Read of size 480 at addr 108548c02e450010 by task syz-fuzzer/8448 [ 76.313439][ T8448] [ 76.315779][ T8448] CPU: 0 PID: 8448 Comm: syz-fuzzer Not tainted 5.12.0-rc8-next-20210423-syzkaller #0 [ 76.325888][ T8448] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.335968][ T8448] Call Trace: [ 76.339362][ T8448] dump_stack+0x141/0x1d7 [ 76.343717][ T8448] ? copyout.part.0+0xd7/0x110 [ 76.348521][ T8448] kasan_report.cold+0x5f/0xd8 [ 76.353311][ T8448] ? copyout.part.0+0xd7/0x110 [ 76.358103][ T8448] kasan_check_range+0x13d/0x180 [ 76.363069][ T8448] copyout.part.0+0xd7/0x110 [ 76.367863][ T8448] _copy_to_iter+0x2b4/0x1850 [ 76.373210][ T8448] ? lock_chain_count+0x20/0x20 [ 76.378322][ T8448] ? _copy_from_iter_nocache+0x1440/0x1440 [ 76.384148][ T8448] ? tcp_mstamp_refresh+0x12/0xa0 [ 76.389230][ T8448] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 76.395618][ T8448] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 76.401359][ T8448] ? __virt_addr_valid+0x5d/0x2d0 [ 76.406414][ T8448] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 76.412688][ T8448] ? __phys_addr_symbol+0x2c/0x70 [ 76.417745][ T8448] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 76.423470][ T8448] ? __check_object_size+0x18a/0x3f0 [ 76.428784][ T8448] simple_copy_to_iter+0x4c/0x70 [ 76.433752][ T8448] __skb_datagram_iter+0x4a7/0x770 [ 76.438900][ T8448] ? zerocopy_sg_from_iter+0x110/0x110 [ 76.444387][ T8448] skb_copy_datagram_iter+0x40/0x50 [ 76.449718][ T8448] tcp_recvmsg_locked+0x1048/0x22f0 [ 76.455045][ T8448] ? tcp_splice_read+0x8b0/0x8b0 [ 76.460006][ T8448] ? mark_held_locks+0x9f/0xe0 [ 76.464812][ T8448] ? __local_bh_enable_ip+0xa0/0x120 [ 76.470118][ T8448] tcp_recvmsg+0x134/0x550 [ 76.474555][ T8448] ? tcp_recvmsg_locked+0x22f0/0x22f0 [ 76.479968][ T8448] ? aa_sk_perm+0x311/0xab0 [ 76.484859][ T8448] inet_recvmsg+0x11b/0x5e0 [ 76.489381][ T8448] ? inet_sendpage+0x140/0x140 [ 76.494187][ T8448] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 76.500470][ T8448] ? security_socket_recvmsg+0x8f/0xc0 [ 76.506057][ T8448] sock_read_iter+0x33c/0x470 [ 76.510765][ T8448] ? ____sys_recvmsg+0x600/0x600 [ 76.515732][ T8448] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 76.521994][ T8448] ? fsnotify+0xa58/0x1060 [ 76.526445][ T8448] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 76.532714][ T8448] new_sync_read+0x5b7/0x6e0 [ 76.537327][ T8448] ? ksys_lseek+0x1b0/0x1b0 [ 76.541852][ T8448] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 76.547968][ T8448] vfs_read+0x35c/0x570 [ 76.552153][ T8448] ksys_read+0x1ee/0x250 [ 76.556418][ T8448] ? vfs_write+0xa40/0xa40 [ 76.561237][ T8448] ? syscall_enter_from_user_mode+0x27/0x70 [ 76.567162][ T8448] do_syscall_64+0x3a/0xb0 [ 76.571601][ T8448] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 76.577609][ T8448] RIP: 0033:0x4af19b [ 76.581625][ T8448] 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 [ 76.601711][ T8448] RSP: 002b:000000c0002f9828 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 76.610241][ T8448] RAX: ffffffffffffffda RBX: 000000c00001e800 RCX: 00000000004af19b [ 76.618246][ T8448] RDX: 0000000000001000 RSI: 000000c00057e000 RDI: 0000000000000006 [ 76.626252][ T8448] RBP: 000000c0002f9878 R08: 0000000000000001 R09: 0000000000000002 [ 76.634275][ T8448] R10: 0000000000004d5a R11: 0000000000000212 R12: 0000000000004d56 [ 76.642269][ T8448] R13: 0000000000000400 R14: 0000000000000002 R15: 0000000000000002 [ 76.650372][ T8448] ================================================================== [ 76.658812][ T8448] Disabling lock debugging due to kernel taint [ 76.678147][ T8448] Kernel panic - not syncing: panic_on_warn set ... [ 76.684842][ T8448] CPU: 0 PID: 8448 Comm: syz-fuzzer Tainted: G B 5.12.0-rc8-next-20210423-syzkaller #0 [ 76.695796][ T8448] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.705869][ T8448] Call Trace: [ 76.709247][ T8448] dump_stack+0x141/0x1d7 [ 76.713606][ T8448] panic+0x306/0x73d [ 76.717529][ T8448] ? __warn_printk+0xf3/0xf3 [ 76.722127][ T8448] ? preempt_schedule_common+0x59/0xc0 [ 76.727633][ T8448] ? copyout.part.0+0xd7/0x110 [ 76.732511][ T8448] ? preempt_schedule_thunk+0x16/0x18 [ 76.737912][ T8448] ? trace_hardirqs_on+0x38/0x1c0 [ 76.742941][ T8448] ? trace_hardirqs_on+0x51/0x1c0 [ 76.747972][ T8448] ? copyout.part.0+0xd7/0x110 [ 76.752740][ T8448] ? copyout.part.0+0xd7/0x110 [ 76.757513][ T8448] end_report.cold+0x5a/0x5a [ 76.762113][ T8448] kasan_report.cold+0x6a/0xd8 [ 76.766890][ T8448] ? copyout.part.0+0xd7/0x110 [ 76.771684][ T8448] kasan_check_range+0x13d/0x180 [ 76.776632][ T8448] copyout.part.0+0xd7/0x110 [ 76.781234][ T8448] _copy_to_iter+0x2b4/0x1850 [ 76.785920][ T8448] ? lock_chain_count+0x20/0x20 [ 76.790793][ T8448] ? _copy_from_iter_nocache+0x1440/0x1440 [ 76.796604][ T8448] ? tcp_mstamp_refresh+0x12/0xa0 [ 76.801636][ T8448] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 76.808233][ T8448] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 76.813979][ T8448] ? __virt_addr_valid+0x5d/0x2d0 [ 76.819018][ T8448] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 76.825283][ T8448] ? __phys_addr_symbol+0x2c/0x70 [ 76.830316][ T8448] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 76.836052][ T8448] ? __check_object_size+0x18a/0x3f0 [ 76.841349][ T8448] simple_copy_to_iter+0x4c/0x70 [ 76.846320][ T8448] __skb_datagram_iter+0x4a7/0x770 [ 76.851441][ T8448] ? zerocopy_sg_from_iter+0x110/0x110 [ 76.856912][ T8448] skb_copy_datagram_iter+0x40/0x50 [ 76.862118][ T8448] tcp_recvmsg_locked+0x1048/0x22f0 [ 76.867332][ T8448] ? tcp_splice_read+0x8b0/0x8b0 [ 76.872284][ T8448] ? mark_held_locks+0x9f/0xe0 [ 76.877302][ T8448] ? __local_bh_enable_ip+0xa0/0x120 [ 76.882617][ T8448] tcp_recvmsg+0x134/0x550 [ 76.887046][ T8448] ? tcp_recvmsg_locked+0x22f0/0x22f0 [ 76.892435][ T8448] ? aa_sk_perm+0x311/0xab0 [ 76.896961][ T8448] inet_recvmsg+0x11b/0x5e0 [ 76.901489][ T8448] ? inet_sendpage+0x140/0x140 [ 76.906265][ T8448] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 76.912522][ T8448] ? security_socket_recvmsg+0x8f/0xc0 [ 76.918016][ T8448] sock_read_iter+0x33c/0x470 [ 76.922717][ T8448] ? ____sys_recvmsg+0x600/0x600 [ 76.927674][ T8448] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 76.933931][ T8448] ? fsnotify+0xa58/0x1060 [ 76.938388][ T8448] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 76.944654][ T8448] new_sync_read+0x5b7/0x6e0 [ 76.949270][ T8448] ? ksys_lseek+0x1b0/0x1b0 [ 76.953795][ T8448] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 76.959805][ T8448] vfs_read+0x35c/0x570 [ 76.963974][ T8448] ksys_read+0x1ee/0x250 [ 76.968224][ T8448] ? vfs_write+0xa40/0xa40 [ 76.972660][ T8448] ? syscall_enter_from_user_mode+0x27/0x70 [ 76.978559][ T8448] do_syscall_64+0x3a/0xb0 [ 76.983010][ T8448] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 76.988921][ T8448] RIP: 0033:0x4af19b [ 76.992818][ T8448] 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 [ 77.012436][ T8448] RSP: 002b:000000c0002f9828 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 77.020961][ T8448] RAX: ffffffffffffffda RBX: 000000c00001e800 RCX: 00000000004af19b [ 77.028961][ T8448] RDX: 0000000000001000 RSI: 000000c00057e000 RDI: 0000000000000006 [ 77.036944][ T8448] RBP: 000000c0002f9878 R08: 0000000000000001 R09: 0000000000000002 [ 77.044932][ T8448] R10: 0000000000004d5a R11: 0000000000000212 R12: 0000000000004d56 [ 77.052930][ T8448] R13: 0000000000000400 R14: 0000000000000002 R15: 0000000000000002 [ 77.061505][ T8448] Kernel Offset: disabled [ 77.065923][ T8448] Rebooting in 86400 seconds..