[ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ 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 '10.128.0.56' (ECDSA) to the list of known hosts. 2021/05/02 14:55:13 fuzzer started 2021/05/02 14:55:13 dialing manager at 10.128.0.169:44661 2021/05/02 14:55:14 syscalls: 3571 2021/05/02 14:55:14 code coverage: enabled 2021/05/02 14:55:14 comparison tracing: enabled 2021/05/02 14:55:14 extra coverage: enabled 2021/05/02 14:55:14 setuid sandbox: enabled 2021/05/02 14:55:14 namespace sandbox: enabled 2021/05/02 14:55:14 Android sandbox: /sys/fs/selinux/policy does not exist 2021/05/02 14:55:14 fault injection: enabled 2021/05/02 14:55:14 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/05/02 14:55:14 net packet injection: enabled 2021/05/02 14:55:14 net device setup: enabled 2021/05/02 14:55:14 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2021/05/02 14:55:14 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/05/02 14:55:14 USB emulation: enabled 2021/05/02 14:55:14 hci packet injection: enabled 2021/05/02 14:55:14 wifi device emulation: enabled 2021/05/02 14:55:14 802.15.4 emulation: enabled 2021/05/02 14:55:14 fetching corpus: 0, signal 0/2000 (executing program) 2021/05/02 14:55:14 fetching corpus: 50, signal 56943/60658 (executing program) 2021/05/02 14:55:14 fetching corpus: 100, signal 89383/94702 (executing program) 2021/05/02 14:55:14 fetching corpus: 150, signal 108895/115769 (executing program) 2021/05/02 14:55:14 fetching corpus: 200, signal 127220/135601 (executing program) 2021/05/02 14:55:14 fetching corpus: 250, signal 143554/153369 (executing program) 2021/05/02 14:55:15 fetching corpus: 300, signal 163901/174968 (executing program) 2021/05/02 14:55:15 fetching corpus: 350, signal 176570/188972 (executing program) 2021/05/02 14:55:15 fetching corpus: 400, signal 190463/204071 (executing program) syzkaller login: [ 76.900671][ T8464] ================================================================== [ 76.909098][ T8464] BUG: KASAN: wild-memory-access in copyout.part.0+0xd7/0x110 [ 76.916880][ T8464] Read of size 2576 at addr 108548c0146e8010 by task syz-fuzzer/8464 [ 76.924941][ T8464] [ 76.927264][ T8464] CPU: 0 PID: 8464 Comm: syz-fuzzer Not tainted 5.12.0-rc8-next-20210423-syzkaller #0 [ 76.936791][ T8464] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.946848][ T8464] Call Trace: [ 76.950127][ T8464] dump_stack+0x141/0x1d7 [ 76.954497][ T8464] ? copyout.part.0+0xd7/0x110 [ 76.959279][ T8464] kasan_report.cold+0x5f/0xd8 [ 76.964060][ T8464] ? copyout.part.0+0xd7/0x110 [ 76.968930][ T8464] kasan_check_range+0x13d/0x180 [ 76.973966][ T8464] copyout.part.0+0xd7/0x110 [ 76.978544][ T8464] _copy_to_iter+0x2b4/0x1850 [ 76.983209][ T8464] ? lock_chain_count+0x20/0x20 [ 76.988076][ T8464] ? _copy_from_iter_nocache+0x1440/0x1440 [ 76.993882][ T8464] ? tcp_mstamp_refresh+0x12/0xa0 [ 76.998931][ T8464] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 77.005197][ T8464] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 77.010912][ T8464] ? __virt_addr_valid+0x5d/0x2d0 [ 77.015936][ T8464] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 77.022180][ T8464] ? __phys_addr_symbol+0x2c/0x70 [ 77.027209][ T8464] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 77.032930][ T8464] ? __check_object_size+0x18a/0x3f0 [ 77.038248][ T8464] simple_copy_to_iter+0x4c/0x70 [ 77.043210][ T8464] __skb_datagram_iter+0x4a7/0x770 [ 77.048335][ T8464] ? zerocopy_sg_from_iter+0x110/0x110 [ 77.053803][ T8464] skb_copy_datagram_iter+0x40/0x50 [ 77.059223][ T8464] tcp_recvmsg_locked+0x1048/0x22f0 [ 77.064549][ T8464] ? tcp_splice_read+0x8b0/0x8b0 [ 77.069514][ T8464] ? mark_held_locks+0x9f/0xe0 [ 77.074295][ T8464] ? __local_bh_enable_ip+0xa0/0x120 [ 77.079596][ T8464] tcp_recvmsg+0x134/0x550 [ 77.084006][ T8464] ? tcp_recvmsg_locked+0x22f0/0x22f0 [ 77.089373][ T8464] ? aa_sk_perm+0x311/0xab0 [ 77.093888][ T8464] inet_recvmsg+0x11b/0x5e0 [ 77.098391][ T8464] ? inet_sendpage+0x140/0x140 [ 77.103144][ T8464] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 77.109374][ T8464] ? security_socket_recvmsg+0x8f/0xc0 [ 77.114841][ T8464] sock_read_iter+0x33c/0x470 [ 77.119528][ T8464] ? ____sys_recvmsg+0x600/0x600 [ 77.124476][ T8464] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 77.130715][ T8464] ? fsnotify+0xa58/0x1060 [ 77.135632][ T8464] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 77.141878][ T8464] new_sync_read+0x5b7/0x6e0 [ 77.146462][ T8464] ? ksys_lseek+0x1b0/0x1b0 [ 77.150957][ T8464] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 77.156945][ T8464] vfs_read+0x35c/0x570 [ 77.161207][ T8464] ksys_read+0x1ee/0x250 [ 77.165437][ T8464] ? vfs_write+0xa40/0xa40 [ 77.169841][ T8464] ? syscall_enter_from_user_mode+0x27/0x70 [ 77.175753][ T8464] do_syscall_64+0x3a/0xb0 [ 77.180159][ T8464] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 77.186151][ T8464] RIP: 0033:0x4af19b [ 77.190041][ T8464] 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 [ 77.209737][ T8464] RSP: 002b:000000c00008f828 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 77.218154][ T8464] RAX: ffffffffffffffda RBX: 000000c00001e800 RCX: 00000000004af19b [ 77.226110][ T8464] RDX: 0000000000001000 RSI: 000000c00044e000 RDI: 0000000000000006 [ 77.234064][ T8464] RBP: 000000c00008f878 R08: 0000000000000001 R09: 0000000000000002 [ 77.242019][ T8464] R10: 0000000000002210 R11: 0000000000000212 R12: 000000000000220c [ 77.249987][ T8464] R13: 0000000000000200 R14: 0000000000000002 R15: 0000000000000002 [ 77.258013][ T8464] ================================================================== [ 77.266095][ T8464] Disabling lock debugging due to kernel taint [ 77.273742][ T8464] Kernel panic - not syncing: panic_on_warn set ... [ 77.280349][ T8464] CPU: 1 PID: 8464 Comm: syz-fuzzer Tainted: G B 5.12.0-rc8-next-20210423-syzkaller #0 [ 77.291271][ T8464] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.301311][ T8464] Call Trace: [ 77.304580][ T8464] dump_stack+0x141/0x1d7 [ 77.308909][ T8464] panic+0x306/0x73d [ 77.312815][ T8464] ? __warn_printk+0xf3/0xf3 [ 77.317405][ T8464] ? preempt_schedule_common+0x59/0xc0 [ 77.322858][ T8464] ? copyout.part.0+0xd7/0x110 [ 77.327612][ T8464] ? preempt_schedule_thunk+0x16/0x18 [ 77.332995][ T8464] ? trace_hardirqs_on+0x38/0x1c0 [ 77.338021][ T8464] ? trace_hardirqs_on+0x51/0x1c0 [ 77.343036][ T8464] ? copyout.part.0+0xd7/0x110 [ 77.347791][ T8464] ? copyout.part.0+0xd7/0x110 [ 77.352551][ T8464] end_report.cold+0x5a/0x5a [ 77.357135][ T8464] kasan_report.cold+0x6a/0xd8 [ 77.361892][ T8464] ? copyout.part.0+0xd7/0x110 [ 77.366647][ T8464] kasan_check_range+0x13d/0x180 [ 77.371583][ T8464] copyout.part.0+0xd7/0x110 [ 77.376170][ T8464] _copy_to_iter+0x2b4/0x1850 [ 77.380844][ T8464] ? lock_chain_count+0x20/0x20 [ 77.385690][ T8464] ? _copy_from_iter_nocache+0x1440/0x1440 [ 77.391487][ T8464] ? tcp_mstamp_refresh+0x12/0xa0 [ 77.396503][ T8464] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 77.402740][ T8464] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 77.408552][ T8464] ? __virt_addr_valid+0x5d/0x2d0 [ 77.413566][ T8464] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 77.419804][ T8464] ? __phys_addr_symbol+0x2c/0x70 [ 77.424838][ T8464] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 77.430554][ T8464] ? __check_object_size+0x18a/0x3f0 [ 77.435834][ T8464] simple_copy_to_iter+0x4c/0x70 [ 77.440766][ T8464] __skb_datagram_iter+0x4a7/0x770 [ 77.445871][ T8464] ? zerocopy_sg_from_iter+0x110/0x110 [ 77.451325][ T8464] skb_copy_datagram_iter+0x40/0x50 [ 77.456577][ T8464] tcp_recvmsg_locked+0x1048/0x22f0 [ 77.461775][ T8464] ? tcp_splice_read+0x8b0/0x8b0 [ 77.466730][ T8464] ? mark_held_locks+0x9f/0xe0 [ 77.471492][ T8464] ? __local_bh_enable_ip+0xa0/0x120 [ 77.476770][ T8464] tcp_recvmsg+0x134/0x550 [ 77.481184][ T8464] ? tcp_recvmsg_locked+0x22f0/0x22f0 [ 77.486554][ T8464] ? aa_sk_perm+0x311/0xab0 [ 77.491050][ T8464] inet_recvmsg+0x11b/0x5e0 [ 77.495547][ T8464] ? inet_sendpage+0x140/0x140 [ 77.501348][ T8464] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 77.507588][ T8464] ? security_socket_recvmsg+0x8f/0xc0 [ 77.514234][ T8464] sock_read_iter+0x33c/0x470 [ 77.518920][ T8464] ? ____sys_recvmsg+0x600/0x600 [ 77.523952][ T8464] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 77.530201][ T8464] ? fsnotify+0xa58/0x1060 [ 77.534614][ T8464] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 77.540855][ T8464] new_sync_read+0x5b7/0x6e0 [ 77.545457][ T8464] ? ksys_lseek+0x1b0/0x1b0 [ 77.549954][ T8464] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 77.555961][ T8464] vfs_read+0x35c/0x570 [ 77.560114][ T8464] ksys_read+0x1ee/0x250 [ 77.564345][ T8464] ? vfs_write+0xa40/0xa40 [ 77.568750][ T8464] ? syscall_enter_from_user_mode+0x27/0x70 [ 77.574640][ T8464] do_syscall_64+0x3a/0xb0 [ 77.579051][ T8464] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 77.584939][ T8464] RIP: 0033:0x4af19b [ 77.588828][ T8464] 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 [ 77.608434][ T8464] RSP: 002b:000000c00008f828 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 77.616841][ T8464] RAX: ffffffffffffffda RBX: 000000c00001e800 RCX: 00000000004af19b [ 77.624804][ T8464] RDX: 0000000000001000 RSI: 000000c00044e000 RDI: 0000000000000006 [ 77.632763][ T8464] RBP: 000000c00008f878 R08: 0000000000000001 R09: 0000000000000002 [ 77.640730][ T8464] R10: 0000000000002210 R11: 0000000000000212 R12: 000000000000220c [ 77.648707][ T8464] R13: 0000000000000200 R14: 0000000000000002 R15: 0000000000000002 [ 77.657492][ T8464] Kernel Offset: disabled [ 77.661819][ T8464] Rebooting in 86400 seconds..