[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ 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. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.81' (ECDSA) to the list of known hosts. 2021/05/02 03:21:02 fuzzer started 2021/05/02 03:21:02 dialing manager at 10.128.0.169:44661 2021/05/02 03:21:03 syscalls: 3571 2021/05/02 03:21:03 code coverage: enabled 2021/05/02 03:21:03 comparison tracing: enabled 2021/05/02 03:21:03 extra coverage: enabled 2021/05/02 03:21:03 setuid sandbox: enabled 2021/05/02 03:21:03 namespace sandbox: enabled 2021/05/02 03:21:03 Android sandbox: /sys/fs/selinux/policy does not exist 2021/05/02 03:21:03 fault injection: enabled 2021/05/02 03:21:03 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/05/02 03:21:03 net packet injection: enabled 2021/05/02 03:21:03 net device setup: enabled 2021/05/02 03:21:03 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2021/05/02 03:21:03 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/05/02 03:21:03 USB emulation: enabled 2021/05/02 03:21:03 hci packet injection: enabled 2021/05/02 03:21:03 wifi device emulation: enabled 2021/05/02 03:21:03 802.15.4 emulation: enabled 2021/05/02 03:21:03 fetching corpus: 0, signal 0/2000 (executing program) 2021/05/02 03:21:03 fetching corpus: 50, signal 53173/56892 (executing program) 2021/05/02 03:21:03 fetching corpus: 100, signal 85653/90991 (executing program) 2021/05/02 03:21:03 fetching corpus: 150, signal 105716/112636 (executing program) 2021/05/02 03:21:03 fetching corpus: 200, signal 130340/138682 (executing program) 2021/05/02 03:21:03 fetching corpus: 250, signal 144026/153820 (executing program) 2021/05/02 03:21:03 fetching corpus: 300, signal 159741/170887 (executing program) 2021/05/02 03:21:04 fetching corpus: 350, signal 174656/187020 (executing program) 2021/05/02 03:21:04 fetching corpus: 400, signal 182118/195828 (executing program) syzkaller login: [ 71.082263][ T8439] ================================================================== [ 71.090490][ T8439] BUG: KASAN: wild-memory-access in copyout.part.0+0xd7/0x110 [ 71.097988][ T8439] Read of size 2032 at addr 108548c02df88010 by task syz-fuzzer/8439 [ 71.106086][ T8439] [ 71.108420][ T8439] CPU: 0 PID: 8439 Comm: syz-fuzzer Not tainted 5.12.0-rc8-next-20210423-syzkaller #0 [ 71.117978][ T8439] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.128325][ T8439] Call Trace: [ 71.131621][ T8439] dump_stack+0x141/0x1d7 [ 71.136002][ T8439] ? copyout.part.0+0xd7/0x110 [ 71.140803][ T8439] kasan_report.cold+0x5f/0xd8 [ 71.145585][ T8439] ? copyout.part.0+0xd7/0x110 [ 71.150361][ T8439] kasan_check_range+0x13d/0x180 [ 71.155311][ T8439] copyout.part.0+0xd7/0x110 [ 71.159914][ T8439] _copy_to_iter+0x2b4/0x1850 [ 71.164608][ T8439] ? lock_chain_count+0x20/0x20 [ 71.169478][ T8439] ? _copy_from_iter_nocache+0x1440/0x1440 [ 71.175313][ T8439] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 71.181576][ T8439] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 71.187309][ T8439] ? __virt_addr_valid+0x5d/0x2d0 [ 71.192345][ T8439] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 71.198602][ T8439] ? __phys_addr_symbol+0x2c/0x70 [ 71.203661][ T8439] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 71.209398][ T8439] ? __check_object_size+0x18a/0x3f0 [ 71.214701][ T8439] simple_copy_to_iter+0x4c/0x70 [ 71.219650][ T8439] __skb_datagram_iter+0x4a7/0x770 [ 71.224784][ T8439] ? zerocopy_sg_from_iter+0x110/0x110 [ 71.230256][ T8439] skb_copy_datagram_iter+0x40/0x50 [ 71.235463][ T8439] tcp_recvmsg_locked+0x1048/0x22f0 [ 71.240700][ T8439] ? tcp_splice_read+0x8b0/0x8b0 [ 71.245668][ T8439] ? mark_held_locks+0x9f/0xe0 [ 71.250452][ T8439] ? __local_bh_enable_ip+0xa0/0x120 [ 71.255839][ T8439] tcp_recvmsg+0x134/0x550 [ 71.260270][ T8439] ? tcp_recvmsg_locked+0x22f0/0x22f0 [ 71.265763][ T8439] ? aa_sk_perm+0x311/0xab0 [ 71.270280][ T8439] inet_recvmsg+0x11b/0x5e0 [ 71.274799][ T8439] ? inet_sendpage+0x140/0x140 [ 71.279580][ T8439] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 71.285836][ T8439] ? security_socket_recvmsg+0x8f/0xc0 [ 71.291323][ T8439] sock_read_iter+0x33c/0x470 [ 71.296037][ T8439] ? ____sys_recvmsg+0x600/0x600 [ 71.300998][ T8439] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 71.307252][ T8439] ? fsnotify+0xa58/0x1060 [ 71.311684][ T8439] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 71.317948][ T8439] new_sync_read+0x5b7/0x6e0 [ 71.322572][ T8439] ? ksys_lseek+0x1b0/0x1b0 [ 71.327087][ T8439] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 71.333104][ T8439] vfs_read+0x35c/0x570 [ 71.337291][ T8439] ksys_read+0x1ee/0x250 [ 71.341545][ T8439] ? vfs_write+0xa40/0xa40 [ 71.345971][ T8439] ? syscall_enter_from_user_mode+0x27/0x70 [ 71.351882][ T8439] do_syscall_64+0x3a/0xb0 [ 71.356313][ T8439] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 71.362218][ T8439] RIP: 0033:0x4af19b [ 71.366117][ T8439] 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 [ 71.385874][ T8439] RSP: 002b:000000c00030b828 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 71.394312][ T8439] RAX: ffffffffffffffda RBX: 000000c00001c000 RCX: 00000000004af19b [ 71.402299][ T8439] RDX: 0000000000001000 RSI: 000000c0004f4000 RDI: 0000000000000006 [ 71.410284][ T8439] RBP: 000000c00030b878 R08: 0000000000000001 R09: 0000000000000002 [ 71.418292][ T8439] R10: 00000000000027c0 R11: 0000000000000212 R12: 00000000000027bc [ 71.426289][ T8439] R13: 0000000000000100 R14: 0000000000000002 R15: 0000000000000002 [ 71.434298][ T8439] ================================================================== [ 71.442362][ T8439] Disabling lock debugging due to kernel taint [ 71.454229][ T3260] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.460571][ T3260] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.463314][ T8439] Kernel panic - not syncing: panic_on_warn set ... [ 71.473398][ T8439] CPU: 0 PID: 8439 Comm: syz-fuzzer Tainted: G B 5.12.0-rc8-next-20210423-syzkaller #0 [ 71.484339][ T8439] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.494454][ T8439] Call Trace: [ 71.497717][ T8439] dump_stack+0x141/0x1d7 [ 71.502048][ T8439] panic+0x306/0x73d [ 71.505969][ T8439] ? __warn_printk+0xf3/0xf3 [ 71.510564][ T8439] ? preempt_schedule_common+0x59/0xc0 [ 71.516012][ T8439] ? copyout.part.0+0xd7/0x110 [ 71.520762][ T8439] ? preempt_schedule_thunk+0x16/0x18 [ 71.526121][ T8439] ? trace_hardirqs_on+0x38/0x1c0 [ 71.531178][ T8439] ? trace_hardirqs_on+0x51/0x1c0 [ 71.536206][ T8439] ? copyout.part.0+0xd7/0x110 [ 71.540956][ T8439] ? copyout.part.0+0xd7/0x110 [ 71.545705][ T8439] end_report.cold+0x5a/0x5a [ 71.550284][ T8439] kasan_report.cold+0x6a/0xd8 [ 71.555031][ T8439] ? copyout.part.0+0xd7/0x110 [ 71.559799][ T8439] kasan_check_range+0x13d/0x180 [ 71.564739][ T8439] copyout.part.0+0xd7/0x110 [ 71.569332][ T8439] _copy_to_iter+0x2b4/0x1850 [ 71.574013][ T8439] ? lock_chain_count+0x20/0x20 [ 71.578868][ T8439] ? _copy_from_iter_nocache+0x1440/0x1440 [ 71.584871][ T8439] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 71.591105][ T8439] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 71.596821][ T8439] ? __virt_addr_valid+0x5d/0x2d0 [ 71.601838][ T8439] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 71.608085][ T8439] ? __phys_addr_symbol+0x2c/0x70 [ 71.613096][ T8439] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 71.618821][ T8439] ? __check_object_size+0x18a/0x3f0 [ 71.624118][ T8439] simple_copy_to_iter+0x4c/0x70 [ 71.629068][ T8439] __skb_datagram_iter+0x4a7/0x770 [ 71.634225][ T8439] ? zerocopy_sg_from_iter+0x110/0x110 [ 71.639803][ T8439] skb_copy_datagram_iter+0x40/0x50 [ 71.644998][ T8439] tcp_recvmsg_locked+0x1048/0x22f0 [ 71.650206][ T8439] ? tcp_splice_read+0x8b0/0x8b0 [ 71.655132][ T8439] ? mark_held_locks+0x9f/0xe0 [ 71.659901][ T8439] ? __local_bh_enable_ip+0xa0/0x120 [ 71.665173][ T8439] tcp_recvmsg+0x134/0x550 [ 71.669577][ T8439] ? tcp_recvmsg_locked+0x22f0/0x22f0 [ 71.674936][ T8439] ? aa_sk_perm+0x311/0xab0 [ 71.679422][ T8439] inet_recvmsg+0x11b/0x5e0 [ 71.683916][ T8439] ? inet_sendpage+0x140/0x140 [ 71.688665][ T8439] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 71.694909][ T8439] ? security_socket_recvmsg+0x8f/0xc0 [ 71.700361][ T8439] sock_read_iter+0x33c/0x470 [ 71.705037][ T8439] ? ____sys_recvmsg+0x600/0x600 [ 71.709963][ T8439] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 71.716198][ T8439] ? fsnotify+0xa58/0x1060 [ 71.720606][ T8439] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 71.726848][ T8439] new_sync_read+0x5b7/0x6e0 [ 71.731425][ T8439] ? ksys_lseek+0x1b0/0x1b0 [ 71.735915][ T8439] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 71.741937][ T8439] vfs_read+0x35c/0x570 [ 71.746101][ T8439] ksys_read+0x1ee/0x250 [ 71.750343][ T8439] ? vfs_write+0xa40/0xa40 [ 71.754745][ T8439] ? syscall_enter_from_user_mode+0x27/0x70 [ 71.760628][ T8439] do_syscall_64+0x3a/0xb0 [ 71.765062][ T8439] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 71.770958][ T8439] RIP: 0033:0x4af19b [ 71.774837][ T8439] 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 [ 71.794439][ T8439] RSP: 002b:000000c00030b828 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 71.802898][ T8439] RAX: ffffffffffffffda RBX: 000000c00001c000 RCX: 00000000004af19b [ 71.810866][ T8439] RDX: 0000000000001000 RSI: 000000c0004f4000 RDI: 0000000000000006 [ 71.818833][ T8439] RBP: 000000c00030b878 R08: 0000000000000001 R09: 0000000000000002 [ 71.826799][ T8439] R10: 00000000000027c0 R11: 0000000000000212 R12: 00000000000027bc [ 71.834759][ T8439] R13: 0000000000000100 R14: 0000000000000002 R15: 0000000000000002 [ 71.843292][ T8439] Kernel Offset: disabled [ 71.847613][ T8439] Rebooting in 86400 seconds..