Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.13' (ECDSA) to the list of known hosts. 2021/05/01 14:51:44 fuzzer started 2021/05/01 14:51:45 dialing manager at 10.128.0.169:44661 2021/05/01 14:51:45 syscalls: 3571 2021/05/01 14:51:45 code coverage: enabled 2021/05/01 14:51:45 comparison tracing: enabled 2021/05/01 14:51:45 extra coverage: enabled 2021/05/01 14:51:45 setuid sandbox: enabled 2021/05/01 14:51:45 namespace sandbox: enabled 2021/05/01 14:51:45 Android sandbox: /sys/fs/selinux/policy does not exist 2021/05/01 14:51:45 fault injection: enabled 2021/05/01 14:51:45 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/05/01 14:51:45 net packet injection: enabled 2021/05/01 14:51:45 net device setup: enabled 2021/05/01 14:51:45 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2021/05/01 14:51:45 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/05/01 14:51:45 USB emulation: enabled 2021/05/01 14:51:45 hci packet injection: enabled 2021/05/01 14:51:45 wifi device emulation: enabled 2021/05/01 14:51:45 802.15.4 emulation: enabled 2021/05/01 14:51:45 fetching corpus: 0, signal 0/2000 (executing program) 2021/05/01 14:51:45 fetching corpus: 50, signal 53325/57045 (executing program) 2021/05/01 14:51:46 fetching corpus: 100, signal 83271/88621 (executing program) 2021/05/01 14:51:46 fetching corpus: 150, signal 102986/109912 (executing program) 2021/05/01 14:51:46 fetching corpus: 200, signal 129323/137677 (executing program) syzkaller login: [ 72.869512][ T8457] ================================================================== [ 72.880106][ T8457] BUG: KASAN: wild-memory-access in copyout.part.0+0xd7/0x110 [ 72.888517][ T8457] Read of size 2728 at addr 108548c01ed60010 by task syz-fuzzer/8457 [ 72.897059][ T8457] [ 72.900041][ T8457] CPU: 1 PID: 8457 Comm: syz-fuzzer Not tainted 5.12.0-rc8-next-20210423-syzkaller #0 [ 72.910185][ T8457] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.920532][ T8457] Call Trace: [ 72.924394][ T8457] dump_stack+0x141/0x1d7 [ 72.929371][ T8457] ? copyout.part.0+0xd7/0x110 [ 72.934174][ T8457] kasan_report.cold+0x5f/0xd8 [ 72.938998][ T8457] ? copyout.part.0+0xd7/0x110 [ 72.944534][ T8457] kasan_check_range+0x13d/0x180 [ 72.950249][ T8457] copyout.part.0+0xd7/0x110 [ 72.955057][ T8457] _copy_to_iter+0x2b4/0x1850 [ 72.961162][ T8457] ? lock_chain_count+0x20/0x20 [ 72.966224][ T8457] ? ip_local_deliver_finish+0x240/0x370 [ 72.972525][ T8457] ? _copy_from_iter_nocache+0x1440/0x1440 [ 72.978927][ T8457] ? ip_local_deliver+0x195/0x200 [ 72.984362][ T8457] ? ip_sublist_rcv_finish+0x9a/0x2c0 [ 72.990685][ T8457] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 72.998312][ T8457] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 73.004447][ T8457] ? __virt_addr_valid+0x5d/0x2d0 [ 73.009957][ T8457] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 73.016339][ T8457] ? __phys_addr_symbol+0x2c/0x70 [ 73.021522][ T8457] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 73.027272][ T8457] ? __check_object_size+0x18a/0x3f0 [ 73.033091][ T8457] simple_copy_to_iter+0x4c/0x70 [ 73.039097][ T8457] __skb_datagram_iter+0x4a7/0x770 [ 73.044464][ T8457] ? zerocopy_sg_from_iter+0x110/0x110 [ 73.049957][ T8457] skb_copy_datagram_iter+0x40/0x50 [ 73.055252][ T8457] tcp_recvmsg_locked+0x1048/0x22f0 [ 73.060881][ T8457] ? tcp_splice_read+0x8b0/0x8b0 [ 73.066067][ T8457] ? mark_held_locks+0x9f/0xe0 [ 73.070959][ T8457] ? __local_bh_enable_ip+0xa0/0x120 [ 73.076487][ T8457] tcp_recvmsg+0x134/0x550 [ 73.081311][ T8457] ? tcp_recvmsg_locked+0x22f0/0x22f0 [ 73.086869][ T8457] ? aa_sk_perm+0x311/0xab0 [ 73.091488][ T8457] inet_recvmsg+0x11b/0x5e0 [ 73.096027][ T8457] ? inet_sendpage+0x140/0x140 [ 73.100824][ T8457] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 73.107104][ T8457] ? security_socket_recvmsg+0x8f/0xc0 [ 73.112601][ T8457] sock_read_iter+0x33c/0x470 [ 73.117319][ T8457] ? ____sys_recvmsg+0x600/0x600 [ 73.122671][ T8457] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 73.129337][ T8457] ? fsnotify+0xa58/0x1060 [ 73.133923][ T8457] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 73.140443][ T8457] new_sync_read+0x5b7/0x6e0 [ 73.145984][ T8457] ? ksys_lseek+0x1b0/0x1b0 [ 73.150721][ T8457] vfs_read+0x35c/0x570 [ 73.154980][ T8457] ksys_read+0x1ee/0x250 [ 73.159612][ T8457] ? vfs_write+0xa40/0xa40 [ 73.164230][ T8457] ? syscall_enter_from_user_mode+0x27/0x70 [ 73.170184][ T8457] do_syscall_64+0x3a/0xb0 [ 73.174955][ T8457] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 73.182482][ T8457] RIP: 0033:0x4af19b [ 73.186585][ T8457] 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 [ 73.206880][ T8457] RSP: 002b:000000c00033f828 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 73.216694][ T8457] RAX: ffffffffffffffda RBX: 000000c00001e800 RCX: 00000000004af19b [ 73.225182][ T8457] RDX: 0000000000001000 RSI: 000000c00020c000 RDI: 0000000000000006 [ 73.233492][ T8457] RBP: 000000c00033f878 R08: 0000000000000001 R09: 0000000000000002 [ 73.241924][ T8457] R10: 0000000000004e6f R11: 0000000000000212 R12: ffffffffffffffff [ 73.250402][ T8457] R13: 0000000000002000 R14: 0000000000000002 R15: 0000000000000002 [ 73.258947][ T8457] ================================================================== [ 73.267877][ T8457] Disabling lock debugging due to kernel taint [ 73.274820][ T8457] Kernel panic - not syncing: panic_on_warn set ... [ 73.281873][ T8457] CPU: 0 PID: 8457 Comm: syz-fuzzer Tainted: G B 5.12.0-rc8-next-20210423-syzkaller #0 [ 73.293512][ T8457] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.304271][ T8457] Call Trace: [ 73.308226][ T8457] dump_stack+0x141/0x1d7 [ 73.312893][ T8457] panic+0x306/0x73d [ 73.318349][ T8457] ? __warn_printk+0xf3/0xf3 [ 73.324109][ T8457] ? preempt_schedule_common+0x59/0xc0 [ 73.340902][ T8457] ? copyout.part.0+0xd7/0x110 [ 73.345772][ T8457] ? preempt_schedule_thunk+0x16/0x18 [ 73.351659][ T8457] ? trace_hardirqs_on+0x38/0x1c0 [ 73.357117][ T8457] ? trace_hardirqs_on+0x51/0x1c0 [ 73.366526][ T8457] ? copyout.part.0+0xd7/0x110 [ 73.372913][ T8457] ? copyout.part.0+0xd7/0x110 [ 73.378273][ T8457] end_report.cold+0x5a/0x5a [ 73.383106][ T8457] kasan_report.cold+0x6a/0xd8 [ 73.387883][ T8457] ? copyout.part.0+0xd7/0x110 [ 73.393326][ T8457] kasan_check_range+0x13d/0x180 [ 73.398665][ T8457] copyout.part.0+0xd7/0x110 [ 73.404421][ T8457] _copy_to_iter+0x2b4/0x1850 [ 73.410895][ T8457] ? lock_chain_count+0x20/0x20 [ 73.417384][ T8457] ? ip_local_deliver_finish+0x240/0x370 [ 73.423905][ T8457] ? _copy_from_iter_nocache+0x1440/0x1440 [ 73.430552][ T8457] ? ip_local_deliver+0x195/0x200 [ 73.436073][ T8457] ? ip_sublist_rcv_finish+0x9a/0x2c0 [ 73.446118][ T8457] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 73.452508][ T8457] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 73.459204][ T8457] ? __virt_addr_valid+0x5d/0x2d0 [ 73.464673][ T8457] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 73.472435][ T8457] ? __phys_addr_symbol+0x2c/0x70 [ 73.479043][ T8457] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 73.485876][ T8457] ? __check_object_size+0x18a/0x3f0 [ 73.492602][ T8457] simple_copy_to_iter+0x4c/0x70 [ 73.498441][ T8457] __skb_datagram_iter+0x4a7/0x770 [ 73.505755][ T8457] ? zerocopy_sg_from_iter+0x110/0x110 [ 73.513276][ T8457] skb_copy_datagram_iter+0x40/0x50 [ 73.519411][ T8457] tcp_recvmsg_locked+0x1048/0x22f0 [ 73.524902][ T8457] ? tcp_splice_read+0x8b0/0x8b0 [ 73.530498][ T8457] ? mark_held_locks+0x9f/0xe0 [ 73.535279][ T8457] ? __local_bh_enable_ip+0xa0/0x120 [ 73.540876][ T8457] tcp_recvmsg+0x134/0x550 [ 73.545301][ T8457] ? tcp_recvmsg_locked+0x22f0/0x22f0 [ 73.551282][ T8457] ? aa_sk_perm+0x311/0xab0 [ 73.556276][ T8457] inet_recvmsg+0x11b/0x5e0 [ 73.561812][ T8457] ? inet_sendpage+0x140/0x140 [ 73.567604][ T8457] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 73.574193][ T8457] ? security_socket_recvmsg+0x8f/0xc0 [ 73.579792][ T8457] sock_read_iter+0x33c/0x470 [ 73.584721][ T8457] ? ____sys_recvmsg+0x600/0x600 [ 73.589668][ T8457] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 73.596227][ T8457] ? fsnotify+0xa58/0x1060 [ 73.600885][ T8457] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 73.607185][ T8457] new_sync_read+0x5b7/0x6e0 [ 73.612014][ T8457] ? ksys_lseek+0x1b0/0x1b0 [ 73.617429][ T8457] vfs_read+0x35c/0x570 [ 73.621648][ T8457] ksys_read+0x1ee/0x250 [ 73.626203][ T8457] ? vfs_write+0xa40/0xa40 [ 73.630768][ T8457] ? syscall_enter_from_user_mode+0x27/0x70 [ 73.636930][ T8457] do_syscall_64+0x3a/0xb0 [ 73.641363][ T8457] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 73.647267][ T8457] RIP: 0033:0x4af19b [ 73.651471][ T8457] 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 [ 73.672632][ T8457] RSP: 002b:000000c00033f828 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 73.681384][ T8457] RAX: ffffffffffffffda RBX: 000000c00001e800 RCX: 00000000004af19b [ 73.690367][ T8457] RDX: 0000000000001000 RSI: 000000c00020c000 RDI: 0000000000000006 [ 73.700936][ T8457] RBP: 000000c00033f878 R08: 0000000000000001 R09: 0000000000000002 [ 73.709664][ T8457] R10: 0000000000004e6f R11: 0000000000000212 R12: ffffffffffffffff [ 73.721039][ T8457] R13: 0000000000002000 R14: 0000000000000002 R15: 0000000000000002 [ 73.731834][ T8457] Kernel Offset: disabled [ 73.736267][ T8457] Rebooting in 86400 seconds..