[ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.57' (ECDSA) to the list of known hosts. 2021/05/01 14:17:00 fuzzer started 2021/05/01 14:17:01 dialing manager at 10.128.0.169:44661 2021/05/01 14:17:01 syscalls: 3571 2021/05/01 14:17:01 code coverage: enabled 2021/05/01 14:17:01 comparison tracing: enabled 2021/05/01 14:17:01 extra coverage: enabled 2021/05/01 14:17:01 setuid sandbox: enabled 2021/05/01 14:17:01 namespace sandbox: enabled 2021/05/01 14:17:01 Android sandbox: /sys/fs/selinux/policy does not exist 2021/05/01 14:17:01 fault injection: enabled 2021/05/01 14:17:01 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/05/01 14:17:01 net packet injection: enabled 2021/05/01 14:17:01 net device setup: enabled 2021/05/01 14:17:01 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2021/05/01 14:17:01 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/05/01 14:17:01 USB emulation: enabled 2021/05/01 14:17:01 hci packet injection: enabled 2021/05/01 14:17:01 wifi device emulation: enabled 2021/05/01 14:17:01 802.15.4 emulation: enabled 2021/05/01 14:17:01 fetching corpus: 0, signal 0/2000 (executing program) 2021/05/01 14:17:01 fetching corpus: 50, signal 45874/49638 (executing program) 2021/05/01 14:17:02 fetching corpus: 100, signal 79228/84604 (executing program) 2021/05/01 14:17:02 fetching corpus: 150, signal 105324/112213 (executing program) 2021/05/01 14:17:02 fetching corpus: 200, signal 121156/129587 (executing program) 2021/05/01 14:17:02 fetching corpus: 250, signal 138243/148084 (executing program) 2021/05/01 14:17:02 fetching corpus: 300, signal 157267/168384 (executing program) syzkaller login: [ 69.301824][ T8398] ================================================================== [ 69.310077][ T8398] BUG: KASAN: wild-memory-access in copyout.part.0+0xd7/0x110 [ 69.317535][ T8398] Read of size 1824 at addr 108548c02e5a07f0 by task syz-fuzzer/8398 [ 69.325581][ T8398] [ 69.327887][ T8398] CPU: 1 PID: 8398 Comm: syz-fuzzer Not tainted 5.12.0-rc8-next-20210423-syzkaller #0 [ 69.337411][ T8398] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.347537][ T8398] Call Trace: [ 69.350807][ T8398] dump_stack+0x141/0x1d7 [ 69.355146][ T8398] ? copyout.part.0+0xd7/0x110 [ 69.359904][ T8398] kasan_report.cold+0x5f/0xd8 [ 69.364665][ T8398] ? copyout.part.0+0xd7/0x110 [ 69.369421][ T8398] kasan_check_range+0x13d/0x180 [ 69.374347][ T8398] copyout.part.0+0xd7/0x110 [ 69.378936][ T8398] _copy_to_iter+0x2b4/0x1850 [ 69.383608][ T8398] ? lock_chain_count+0x20/0x20 [ 69.388467][ T8398] ? _copy_from_iter_nocache+0x1440/0x1440 [ 69.394261][ T8398] ? tcp_mstamp_refresh+0x12/0xa0 [ 69.399303][ T8398] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 69.405016][ T8398] ? __virt_addr_valid+0x5d/0x2d0 [ 69.410030][ T8398] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 69.416261][ T8398] ? __phys_addr_symbol+0x2c/0x70 [ 69.421286][ T8398] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 69.427011][ T8398] ? __check_object_size+0x18a/0x3f0 [ 69.432293][ T8398] simple_copy_to_iter+0x4c/0x70 [ 69.437223][ T8398] __skb_datagram_iter+0x4a7/0x770 [ 69.442419][ T8398] ? zerocopy_sg_from_iter+0x110/0x110 [ 69.447875][ T8398] skb_copy_datagram_iter+0x40/0x50 [ 69.453065][ T8398] tcp_recvmsg_locked+0x1048/0x22f0 [ 69.458269][ T8398] ? tcp_splice_read+0x8b0/0x8b0 [ 69.463198][ T8398] ? mark_held_locks+0x9f/0xe0 [ 69.467959][ T8398] ? __local_bh_enable_ip+0xa0/0x120 [ 69.473238][ T8398] tcp_recvmsg+0x134/0x550 [ 69.477650][ T8398] ? tcp_recvmsg_locked+0x22f0/0x22f0 [ 69.483021][ T8398] ? aa_sk_perm+0x311/0xab0 [ 69.487518][ T8398] inet_recvmsg+0x11b/0x5e0 [ 69.492017][ T8398] ? inet_sendpage+0x140/0x140 [ 69.496775][ T8398] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 69.503007][ T8398] ? security_socket_recvmsg+0x8f/0xc0 [ 69.508459][ T8398] sock_read_iter+0x33c/0x470 [ 69.513131][ T8398] ? ____sys_recvmsg+0x600/0x600 [ 69.518067][ T8398] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 69.524304][ T8398] ? fsnotify+0xa58/0x1060 [ 69.528715][ T8398] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 69.534953][ T8398] new_sync_read+0x5b7/0x6e0 [ 69.539535][ T8398] ? ksys_lseek+0x1b0/0x1b0 [ 69.544062][ T8398] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 69.550072][ T8398] vfs_read+0x35c/0x570 [ 69.554224][ T8398] ksys_read+0x1ee/0x250 [ 69.558455][ T8398] ? vfs_write+0xa40/0xa40 [ 69.562866][ T8398] ? syscall_enter_from_user_mode+0x27/0x70 [ 69.568758][ T8398] do_syscall_64+0x3a/0xb0 [ 69.573176][ T8398] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 69.579147][ T8398] RIP: 0033:0x4af19b [ 69.583030][ T8398] 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 [ 69.602639][ T8398] RSP: 002b:000000c0004b9828 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 69.611043][ T8398] RAX: ffffffffffffffda RBX: 000000c00001e800 RCX: 00000000004af19b [ 69.619001][ T8398] RDX: 0000000000001000 RSI: 000000c0001ec000 RDI: 0000000000000006 [ 69.626965][ T8398] RBP: 000000c0004b9878 R08: 0000000000000001 R09: 0000000000000002 [ 69.634923][ T8398] R10: 0000000000001b62 R11: 0000000000000212 R12: 0000000000001b5e [ 69.642879][ T8398] R13: 0000000000000100 R14: 0000000000000002 R15: 0000000000000002 [ 69.650866][ T8398] ================================================================== [ 69.658904][ T8398] Disabling lock debugging due to kernel taint [ 69.665544][ T8398] Kernel panic - not syncing: panic_on_warn set ... [ 69.672137][ T8398] CPU: 0 PID: 8398 Comm: syz-fuzzer Tainted: G B 5.12.0-rc8-next-20210423-syzkaller #0 [ 69.683070][ T8398] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.693127][ T8398] Call Trace: [ 69.696385][ T8398] dump_stack+0x141/0x1d7 [ 69.700697][ T8398] panic+0x306/0x73d [ 69.704618][ T8398] ? __warn_printk+0xf3/0xf3 [ 69.709187][ T8398] ? preempt_schedule_common+0x59/0xc0 [ 69.714627][ T8398] ? copyout.part.0+0xd7/0x110 [ 69.719373][ T8398] ? preempt_schedule_thunk+0x16/0x18 [ 69.724731][ T8398] ? trace_hardirqs_on+0x38/0x1c0 [ 69.729739][ T8398] ? trace_hardirqs_on+0x51/0x1c0 [ 69.734755][ T8398] ? copyout.part.0+0xd7/0x110 [ 69.739496][ T8398] ? copyout.part.0+0xd7/0x110 [ 69.744239][ T8398] end_report.cold+0x5a/0x5a [ 69.748810][ T8398] kasan_report.cold+0x6a/0xd8 [ 69.753556][ T8398] ? copyout.part.0+0xd7/0x110 [ 69.758317][ T8398] kasan_check_range+0x13d/0x180 [ 69.763233][ T8398] copyout.part.0+0xd7/0x110 [ 69.767801][ T8398] _copy_to_iter+0x2b4/0x1850 [ 69.772459][ T8398] ? lock_chain_count+0x20/0x20 [ 69.777290][ T8398] ? _copy_from_iter_nocache+0x1440/0x1440 [ 69.783072][ T8398] ? tcp_mstamp_refresh+0x12/0xa0 [ 69.788083][ T8398] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 69.793782][ T8398] ? __virt_addr_valid+0x5d/0x2d0 [ 69.799045][ T8398] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 69.805289][ T8398] ? __phys_addr_symbol+0x2c/0x70 [ 69.810290][ T8398] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 69.815989][ T8398] ? __check_object_size+0x18a/0x3f0 [ 69.821254][ T8398] simple_copy_to_iter+0x4c/0x70 [ 69.826173][ T8398] __skb_datagram_iter+0x4a7/0x770 [ 69.831262][ T8398] ? zerocopy_sg_from_iter+0x110/0x110 [ 69.836700][ T8398] skb_copy_datagram_iter+0x40/0x50 [ 69.841890][ T8398] tcp_recvmsg_locked+0x1048/0x22f0 [ 69.847072][ T8398] ? tcp_splice_read+0x8b0/0x8b0 [ 69.851987][ T8398] ? mark_held_locks+0x9f/0xe0 [ 69.856732][ T8398] ? __local_bh_enable_ip+0xa0/0x120 [ 69.861996][ T8398] tcp_recvmsg+0x134/0x550 [ 69.866395][ T8398] ? tcp_recvmsg_locked+0x22f0/0x22f0 [ 69.871746][ T8398] ? aa_sk_perm+0x311/0xab0 [ 69.876227][ T8398] inet_recvmsg+0x11b/0x5e0 [ 69.880711][ T8398] ? inet_sendpage+0x140/0x140 [ 69.885454][ T8398] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 69.891677][ T8398] ? security_socket_recvmsg+0x8f/0xc0 [ 69.897118][ T8398] sock_read_iter+0x33c/0x470 [ 69.901789][ T8398] ? ____sys_recvmsg+0x600/0x600 [ 69.906715][ T8398] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 69.912938][ T8398] ? fsnotify+0xa58/0x1060 [ 69.917335][ T8398] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 69.923558][ T8398] new_sync_read+0x5b7/0x6e0 [ 69.928142][ T8398] ? ksys_lseek+0x1b0/0x1b0 [ 69.932626][ T8398] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 69.938591][ T8398] vfs_read+0x35c/0x570 [ 69.942769][ T8398] ksys_read+0x1ee/0x250 [ 69.947029][ T8398] ? vfs_write+0xa40/0xa40 [ 69.951428][ T8398] ? syscall_enter_from_user_mode+0x27/0x70 [ 69.957300][ T8398] do_syscall_64+0x3a/0xb0 [ 69.961699][ T8398] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 69.967613][ T8398] RIP: 0033:0x4af19b [ 69.971486][ T8398] 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 [ 69.991068][ T8398] RSP: 002b:000000c0004b9828 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 69.999459][ T8398] RAX: ffffffffffffffda RBX: 000000c00001e800 RCX: 00000000004af19b [ 70.007419][ T8398] RDX: 0000000000001000 RSI: 000000c0001ec000 RDI: 0000000000000006 [ 70.015549][ T8398] RBP: 000000c0004b9878 R08: 0000000000000001 R09: 0000000000000002 [ 70.023503][ T8398] R10: 0000000000001b62 R11: 0000000000000212 R12: 0000000000001b5e [ 70.031455][ T8398] R13: 0000000000000100 R14: 0000000000000002 R15: 0000000000000002 [ 70.040154][ T8398] Kernel Offset: disabled [ 70.044459][ T8398] Rebooting in 86400 seconds..