[[0;32m OK [0m] Started Getty on tty3. [[0;32m OK [0m] Started Getty on tty2. [[0;32m OK [0m] Started Serial Getty on ttyS0. [[0;32m OK [0m] Started Getty on tty1. [[0;32m OK [0m] Started getty on tty2-tty6 if dbus and logind are not available. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.123' (ECDSA) to the list of known hosts. 2021/05/01 20:28:47 fuzzer started 2021/05/01 20:28:47 dialing manager at 10.128.0.169:44661 2021/05/01 20:28:47 syscalls: 3571 2021/05/01 20:28:47 code coverage: enabled 2021/05/01 20:28:47 comparison tracing: enabled 2021/05/01 20:28:47 extra coverage: enabled 2021/05/01 20:28:47 setuid sandbox: enabled 2021/05/01 20:28:47 namespace sandbox: enabled 2021/05/01 20:28:47 Android sandbox: /sys/fs/selinux/policy does not exist 2021/05/01 20:28:47 fault injection: enabled 2021/05/01 20:28:47 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/05/01 20:28:47 net packet injection: enabled 2021/05/01 20:28:47 net device setup: enabled 2021/05/01 20:28:47 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2021/05/01 20:28:47 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/05/01 20:28:47 USB emulation: enabled 2021/05/01 20:28:47 hci packet injection: enabled 2021/05/01 20:28:47 wifi device emulation: enabled 2021/05/01 20:28:47 802.15.4 emulation: enabled 2021/05/01 20:28:47 fetching corpus: 0, signal 0/2000 (executing program) 2021/05/01 20:28:47 fetching corpus: 50, signal 40765/44562 (executing program) 2021/05/01 20:28:48 fetching corpus: 100, signal 69724/75212 (executing program) 2021/05/01 20:28:48 fetching corpus: 150, signal 100823/107808 (executing program) 2021/05/01 20:28:48 fetching corpus: 200, signal 127735/136106 (executing program) 2021/05/01 20:28:48 fetching corpus: 250, signal 140065/149920 (executing program) 2021/05/01 20:28:49 fetching corpus: 300, signal 158095/169256 (executing program) syzkaller login: [ 74.128690][ T8427] ================================================================== [ 74.137419][ T8427] BUG: KASAN: wild-memory-access in copyout.part.0+0xd7/0x110 [ 74.145312][ T8427] Read of size 1680 at addr 108548c02f800010 by task syz-fuzzer/8427 [ 74.154466][ T8427] [ 74.156790][ T8427] CPU: 0 PID: 8427 Comm: syz-fuzzer Not tainted 5.12.0-rc8-next-20210423-syzkaller #0 [ 74.171228][ T8427] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.181371][ T8427] Call Trace: [ 74.184652][ T8427] dump_stack+0x141/0x1d7 [ 74.189040][ T8427] ? copyout.part.0+0xd7/0x110 [ 74.193838][ T8427] kasan_report.cold+0x5f/0xd8 [ 74.198630][ T8427] ? copyout.part.0+0xd7/0x110 [ 74.203394][ T8427] kasan_check_range+0x13d/0x180 [ 74.208479][ T8427] copyout.part.0+0xd7/0x110 [ 74.213092][ T8427] _copy_to_iter+0x2b4/0x1850 [ 74.218225][ T8427] ? lock_chain_count+0x20/0x20 [ 74.223079][ T8427] ? _copy_from_iter_nocache+0x1440/0x1440 [ 74.228886][ T8427] ? tcp_mstamp_refresh+0x12/0xa0 [ 74.234008][ T8427] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 74.240693][ T8427] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 74.246413][ T8427] ? __virt_addr_valid+0x5d/0x2d0 [ 74.251479][ T8427] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 74.257751][ T8427] ? __phys_addr_symbol+0x2c/0x70 [ 74.262789][ T8427] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 74.269097][ T8427] ? __check_object_size+0x18a/0x3f0 [ 74.274399][ T8427] simple_copy_to_iter+0x4c/0x70 [ 74.279345][ T8427] __skb_datagram_iter+0x4a7/0x770 [ 74.284484][ T8427] ? zerocopy_sg_from_iter+0x110/0x110 [ 74.289959][ T8427] skb_copy_datagram_iter+0x40/0x50 [ 74.295239][ T8427] tcp_recvmsg_locked+0x1048/0x22f0 [ 74.300443][ T8427] ? tcp_splice_read+0x8b0/0x8b0 [ 74.308978][ T8427] ? mark_held_locks+0x9f/0xe0 [ 74.313740][ T8427] ? __local_bh_enable_ip+0xa0/0x120 [ 74.319031][ T8427] tcp_recvmsg+0x134/0x550 [ 74.323471][ T8427] ? tcp_recvmsg_locked+0x22f0/0x22f0 [ 74.328857][ T8427] ? aa_sk_perm+0x311/0xab0 [ 74.333536][ T8427] inet_recvmsg+0x11b/0x5e0 [ 74.339482][ T8427] ? inet_sendpage+0x140/0x140 [ 74.344252][ T8427] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 74.350600][ T8427] ? security_socket_recvmsg+0x8f/0xc0 [ 74.356415][ T8427] sock_read_iter+0x33c/0x470 [ 74.361219][ T8427] ? ____sys_recvmsg+0x600/0x600 [ 74.366534][ T8427] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 74.373122][ T8427] ? fsnotify+0xa58/0x1060 [ 74.377574][ T8427] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 74.383855][ T8427] new_sync_read+0x5b7/0x6e0 [ 74.388547][ T8427] ? ksys_lseek+0x1b0/0x1b0 [ 74.393087][ T8427] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 74.399077][ T8427] vfs_read+0x35c/0x570 [ 74.403419][ T8427] ksys_read+0x1ee/0x250 [ 74.407933][ T8427] ? vfs_write+0xa40/0xa40 [ 74.412451][ T8427] ? syscall_enter_from_user_mode+0x27/0x70 [ 74.418462][ T8427] do_syscall_64+0x3a/0xb0 [ 74.428287][ T8427] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 74.434210][ T8427] RIP: 0033:0x4af19b [ 74.438121][ T8427] 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 [ 74.463026][ T8427] RSP: 002b:000000c0005fb868 EFLAGS: 00000216 ORIG_RAX: 0000000000000000 [ 74.471629][ T8427] RAX: ffffffffffffffda RBX: 000000c00001c000 RCX: 00000000004af19b [ 74.479621][ T8427] RDX: 0000000000001000 RSI: 000000c0004fc000 RDI: 0000000000000006 [ 74.487606][ T8427] RBP: 000000c0005fb8b8 R08: 0000000000000001 R09: 0000000000000002 [ 74.495602][ T8427] R10: 0000000000002cae R11: 0000000000000216 R12: 0000000000002caa [ 74.503813][ T8427] R13: 0000000000000400 R14: 0000000000000002 R15: 0000000000000002 [ 74.512201][ T8427] ================================================================== [ 74.520354][ T8427] Disabling lock debugging due to kernel taint [ 74.529180][ T8427] Kernel panic - not syncing: panic_on_warn set ... [ 74.535793][ T8427] CPU: 1 PID: 8427 Comm: syz-fuzzer Tainted: G B 5.12.0-rc8-next-20210423-syzkaller #0 [ 74.546741][ T8427] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.556908][ T8427] Call Trace: [ 74.560197][ T8427] dump_stack+0x141/0x1d7 [ 74.571229][ T8427] panic+0x306/0x73d [ 74.575150][ T8427] ? __warn_printk+0xf3/0xf3 [ 74.579843][ T8427] ? preempt_schedule_common+0x59/0xc0 [ 74.585352][ T8427] ? copyout.part.0+0xd7/0x110 [ 74.590227][ T8427] ? preempt_schedule_thunk+0x16/0x18 [ 74.595619][ T8427] ? trace_hardirqs_on+0x38/0x1c0 [ 74.601278][ T8427] ? trace_hardirqs_on+0x51/0x1c0 [ 74.607236][ T8427] ? copyout.part.0+0xd7/0x110 [ 74.612211][ T8427] ? copyout.part.0+0xd7/0x110 [ 74.617007][ T8427] end_report.cold+0x5a/0x5a [ 74.621833][ T8427] kasan_report.cold+0x6a/0xd8 [ 74.626617][ T8427] ? copyout.part.0+0xd7/0x110 [ 74.631392][ T8427] kasan_check_range+0x13d/0x180 [ 74.636444][ T8427] copyout.part.0+0xd7/0x110 [ 74.641064][ T8427] _copy_to_iter+0x2b4/0x1850 [ 74.645776][ T8427] ? lock_chain_count+0x20/0x20 [ 74.650654][ T8427] ? _copy_from_iter_nocache+0x1440/0x1440 [ 74.656476][ T8427] ? tcp_mstamp_refresh+0x12/0xa0 [ 74.662229][ T8427] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 74.668489][ T8427] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 74.674223][ T8427] ? __virt_addr_valid+0x5d/0x2d0 [ 74.679256][ T8427] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 74.685607][ T8427] ? __phys_addr_symbol+0x2c/0x70 [ 74.690633][ T8427] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 74.696364][ T8427] ? __check_object_size+0x18a/0x3f0 [ 74.701735][ T8427] simple_copy_to_iter+0x4c/0x70 [ 74.707067][ T8427] __skb_datagram_iter+0x4a7/0x770 [ 74.712428][ T8427] ? zerocopy_sg_from_iter+0x110/0x110 [ 74.720062][ T8427] skb_copy_datagram_iter+0x40/0x50 [ 74.725275][ T8427] tcp_recvmsg_locked+0x1048/0x22f0 [ 74.730688][ T8427] ? tcp_splice_read+0x8b0/0x8b0 [ 74.735816][ T8427] ? mark_held_locks+0x9f/0xe0 [ 74.740621][ T8427] ? __local_bh_enable_ip+0xa0/0x120 [ 74.745950][ T8427] tcp_recvmsg+0x134/0x550 [ 74.750415][ T8427] ? tcp_recvmsg_locked+0x22f0/0x22f0 [ 74.755816][ T8427] ? aa_sk_perm+0x311/0xab0 [ 74.760329][ T8427] inet_recvmsg+0x11b/0x5e0 [ 74.764942][ T8427] ? inet_sendpage+0x140/0x140 [ 74.770065][ T8427] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 74.776765][ T8427] ? security_socket_recvmsg+0x8f/0xc0 [ 74.782930][ T8427] sock_read_iter+0x33c/0x470 [ 74.787658][ T8427] ? ____sys_recvmsg+0x600/0x600 [ 74.792607][ T8427] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 74.798859][ T8427] ? fsnotify+0xa58/0x1060 [ 74.803281][ T8427] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 74.809537][ T8427] new_sync_read+0x5b7/0x6e0 [ 74.814133][ T8427] ? ksys_lseek+0x1b0/0x1b0 [ 74.818637][ T8427] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 74.824641][ T8427] vfs_read+0x35c/0x570 [ 74.828815][ T8427] ksys_read+0x1ee/0x250 [ 74.833065][ T8427] ? vfs_write+0xa40/0xa40 [ 74.837485][ T8427] ? syscall_enter_from_user_mode+0x27/0x70 [ 74.843412][ T8427] do_syscall_64+0x3a/0xb0 [ 74.847840][ T8427] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 74.853743][ T8427] RIP: 0033:0x4af19b [ 74.857820][ T8427] 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 [ 74.877879][ T8427] RSP: 002b:000000c0005fb868 EFLAGS: 00000216 ORIG_RAX: 0000000000000000 [ 74.886308][ T8427] RAX: ffffffffffffffda RBX: 000000c00001c000 RCX: 00000000004af19b [ 74.894309][ T8427] RDX: 0000000000001000 RSI: 000000c0004fc000 RDI: 0000000000000006 [ 74.902294][ T8427] RBP: 000000c0005fb8b8 R08: 0000000000000001 R09: 0000000000000002 [ 74.910289][ T8427] R10: 0000000000002cae R11: 0000000000000216 R12: 0000000000002caa [ 74.918265][ T8427] R13: 0000000000000400 R14: 0000000000000002 R15: 0000000000000002 [ 74.926811][ T8427] Kernel Offset: disabled [ 74.931276][ T8427] Rebooting in 86400 seconds..