Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.78' (ECDSA) to the list of known hosts. 2021/05/03 05:45:14 fuzzer started 2021/05/03 05:45:14 dialing manager at 10.128.0.169:44661 2021/05/03 05:45:14 syscalls: 3571 2021/05/03 05:45:14 code coverage: enabled 2021/05/03 05:45:14 comparison tracing: enabled 2021/05/03 05:45:14 extra coverage: enabled 2021/05/03 05:45:14 setuid sandbox: enabled 2021/05/03 05:45:14 namespace sandbox: enabled 2021/05/03 05:45:14 Android sandbox: /sys/fs/selinux/policy does not exist 2021/05/03 05:45:14 fault injection: enabled 2021/05/03 05:45:14 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/05/03 05:45:14 net packet injection: enabled 2021/05/03 05:45:14 net device setup: enabled 2021/05/03 05:45:14 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2021/05/03 05:45:14 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/05/03 05:45:14 USB emulation: enabled 2021/05/03 05:45:14 hci packet injection: enabled 2021/05/03 05:45:14 wifi device emulation: enabled 2021/05/03 05:45:14 802.15.4 emulation: enabled 2021/05/03 05:45:14 fetching corpus: 0, signal 0/2000 (executing program) 2021/05/03 05:45:15 fetching corpus: 50, signal 52649/56387 (executing program) 2021/05/03 05:45:15 fetching corpus: 100, signal 86223/91568 (executing program) 2021/05/03 05:45:15 fetching corpus: 150, signal 105396/112302 (executing program) 2021/05/03 05:45:15 fetching corpus: 200, signal 122509/130933 (executing program) 2021/05/03 05:45:15 fetching corpus: 250, signal 136344/146241 (executing program) 2021/05/03 05:45:15 fetching corpus: 300, signal 154459/165700 (executing program) 2021/05/03 05:45:15 fetching corpus: 350, signal 166145/178766 (executing program) syzkaller login: [ 68.699577][ T8483] ================================================================== [ 68.707888][ T8483] BUG: KASAN: wild-memory-access in copyout.part.0+0xd7/0x110 [ 68.715355][ T8483] Read of size 576 at addr 108548c02b390010 by task syz-fuzzer/8483 [ 68.723321][ T8483] [ 68.725642][ T8483] CPU: 0 PID: 8483 Comm: syz-fuzzer Not tainted 5.12.0-rc8-next-20210423-syzkaller #0 [ 68.735165][ T8483] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.745202][ T8483] Call Trace: [ 68.748467][ T8483] dump_stack+0x141/0x1d7 [ 68.752797][ T8483] ? copyout.part.0+0xd7/0x110 [ 68.757561][ T8483] kasan_report.cold+0x5f/0xd8 [ 68.762315][ T8483] ? copyout.part.0+0xd7/0x110 [ 68.767165][ T8483] kasan_check_range+0x13d/0x180 [ 68.772093][ T8483] copyout.part.0+0xd7/0x110 [ 68.776668][ T8483] _copy_to_iter+0x2b4/0x1850 [ 68.781344][ T8483] ? lock_chain_count+0x20/0x20 [ 68.786207][ T8483] ? _copy_from_iter_nocache+0x1440/0x1440 [ 68.791999][ T8483] ? tcp_mstamp_refresh+0x12/0xa0 [ 68.797026][ T8483] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 68.803270][ T8483] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 68.808974][ T8483] ? __virt_addr_valid+0x5d/0x2d0 [ 68.813982][ T8483] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 68.820222][ T8483] ? __phys_addr_symbol+0x2c/0x70 [ 68.825240][ T8483] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 68.830944][ T8483] ? __check_object_size+0x18a/0x3f0 [ 68.836218][ T8483] simple_copy_to_iter+0x4c/0x70 [ 68.841229][ T8483] __skb_datagram_iter+0x4a7/0x770 [ 68.846324][ T8483] ? zerocopy_sg_from_iter+0x110/0x110 [ 68.851800][ T8483] skb_copy_datagram_iter+0x40/0x50 [ 68.857006][ T8483] tcp_recvmsg_locked+0x1048/0x22f0 [ 68.862199][ T8483] ? tcp_splice_read+0x8b0/0x8b0 [ 68.867124][ T8483] ? mark_held_locks+0x9f/0xe0 [ 68.871878][ T8483] ? __local_bh_enable_ip+0xa0/0x120 [ 68.877161][ T8483] tcp_recvmsg+0x134/0x550 [ 68.882016][ T8483] ? tcp_recvmsg_locked+0x22f0/0x22f0 [ 68.887390][ T8483] ? aa_sk_perm+0x311/0xab0 [ 68.891883][ T8483] inet_recvmsg+0x11b/0x5e0 [ 68.896377][ T8483] ? inet_sendpage+0x140/0x140 [ 68.901230][ T8483] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 68.907547][ T8483] ? security_socket_recvmsg+0x8f/0xc0 [ 68.912997][ T8483] sock_read_iter+0x33c/0x470 [ 68.917775][ T8483] ? ____sys_recvmsg+0x600/0x600 [ 68.922703][ T8483] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 68.928934][ T8483] ? fsnotify+0xa58/0x1060 [ 68.933337][ T8483] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 68.939675][ T8483] new_sync_read+0x5b7/0x6e0 [ 68.944353][ T8483] ? ksys_lseek+0x1b0/0x1b0 [ 68.948841][ T8483] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 68.954822][ T8483] vfs_read+0x35c/0x570 [ 68.958966][ T8483] ksys_read+0x1ee/0x250 [ 68.963191][ T8483] ? vfs_write+0xa40/0xa40 [ 68.967595][ T8483] ? syscall_enter_from_user_mode+0x27/0x70 [ 68.973486][ T8483] do_syscall_64+0x3a/0xb0 [ 68.977893][ T8483] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 68.983869][ T8483] RIP: 0033:0x4af19b [ 68.987755][ T8483] 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 [ 69.007368][ T8483] RSP: 002b:000000c0002f9828 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 69.015773][ T8483] RAX: ffffffffffffffda RBX: 000000c00001e800 RCX: 00000000004af19b [ 69.023739][ T8483] RDX: 0000000000001000 RSI: 000000c0000d0000 RDI: 0000000000000006 [ 69.031812][ T8483] RBP: 000000c0002f9878 R08: 0000000000000001 R09: 0000000000000002 [ 69.039770][ T8483] R10: 000000000000442d R11: 0000000000000212 R12: ffffffffffffffff [ 69.047727][ T8483] R13: 0000000000002000 R14: 0000000000000004 R15: 0000000000000004 [ 69.055696][ T8483] ================================================================== [ 69.063737][ T8483] Disabling lock debugging due to kernel taint [ 69.071695][ T8483] Kernel panic - not syncing: panic_on_warn set ... [ 69.078330][ T8483] CPU: 0 PID: 8483 Comm: syz-fuzzer Tainted: G B 5.12.0-rc8-next-20210423-syzkaller #0 [ 69.089261][ T8483] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.099298][ T8483] Call Trace: [ 69.102559][ T8483] dump_stack+0x141/0x1d7 [ 69.106981][ T8483] panic+0x306/0x73d [ 69.110999][ T8483] ? __warn_printk+0xf3/0xf3 [ 69.115579][ T8483] ? preempt_schedule_common+0x59/0xc0 [ 69.121235][ T8483] ? copyout.part.0+0xd7/0x110 [ 69.126105][ T8483] ? preempt_schedule_thunk+0x16/0x18 [ 69.131732][ T8483] ? trace_hardirqs_on+0x38/0x1c0 [ 69.136737][ T8483] ? trace_hardirqs_on+0x51/0x1c0 [ 69.141844][ T8483] ? copyout.part.0+0xd7/0x110 [ 69.146589][ T8483] ? copyout.part.0+0xd7/0x110 [ 69.151351][ T8483] end_report.cold+0x5a/0x5a [ 69.155937][ T8483] kasan_report.cold+0x6a/0xd8 [ 69.160699][ T8483] ? copyout.part.0+0xd7/0x110 [ 69.165444][ T8483] kasan_check_range+0x13d/0x180 [ 69.170436][ T8483] copyout.part.0+0xd7/0x110 [ 69.175025][ T8483] _copy_to_iter+0x2b4/0x1850 [ 69.179709][ T8483] ? lock_chain_count+0x20/0x20 [ 69.184557][ T8483] ? _copy_from_iter_nocache+0x1440/0x1440 [ 69.190359][ T8483] ? tcp_mstamp_refresh+0x12/0xa0 [ 69.195377][ T8483] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 69.201630][ T8483] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 69.207336][ T8483] ? __virt_addr_valid+0x5d/0x2d0 [ 69.212342][ T8483] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 69.218618][ T8483] ? __phys_addr_symbol+0x2c/0x70 [ 69.223733][ T8483] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 69.229456][ T8483] ? __check_object_size+0x18a/0x3f0 [ 69.234727][ T8483] simple_copy_to_iter+0x4c/0x70 [ 69.239664][ T8483] __skb_datagram_iter+0x4a7/0x770 [ 69.244773][ T8483] ? zerocopy_sg_from_iter+0x110/0x110 [ 69.250235][ T8483] skb_copy_datagram_iter+0x40/0x50 [ 69.255762][ T8483] tcp_recvmsg_locked+0x1048/0x22f0 [ 69.260957][ T8483] ? tcp_splice_read+0x8b0/0x8b0 [ 69.265885][ T8483] ? mark_held_locks+0x9f/0xe0 [ 69.270635][ T8483] ? __local_bh_enable_ip+0xa0/0x120 [ 69.275917][ T8483] tcp_recvmsg+0x134/0x550 [ 69.280338][ T8483] ? tcp_recvmsg_locked+0x22f0/0x22f0 [ 69.285694][ T8483] ? aa_sk_perm+0x311/0xab0 [ 69.290181][ T8483] inet_recvmsg+0x11b/0x5e0 [ 69.294687][ T8483] ? inet_sendpage+0x140/0x140 [ 69.299434][ T8483] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 69.305755][ T8483] ? security_socket_recvmsg+0x8f/0xc0 [ 69.311220][ T8483] sock_read_iter+0x33c/0x470 [ 69.315881][ T8483] ? ____sys_recvmsg+0x600/0x600 [ 69.320819][ T8483] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 69.327058][ T8483] ? fsnotify+0xa58/0x1060 [ 69.331504][ T8483] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 69.337729][ T8483] new_sync_read+0x5b7/0x6e0 [ 69.342326][ T8483] ? ksys_lseek+0x1b0/0x1b0 [ 69.346984][ T8483] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 69.352953][ T8483] vfs_read+0x35c/0x570 [ 69.357178][ T8483] ksys_read+0x1ee/0x250 [ 69.361516][ T8483] ? vfs_write+0xa40/0xa40 [ 69.365914][ T8483] ? syscall_enter_from_user_mode+0x27/0x70 [ 69.371805][ T8483] do_syscall_64+0x3a/0xb0 [ 69.376212][ T8483] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 69.382104][ T8483] RIP: 0033:0x4af19b [ 69.386066][ T8483] 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 [ 69.405653][ T8483] RSP: 002b:000000c0002f9828 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 69.414146][ T8483] RAX: ffffffffffffffda RBX: 000000c00001e800 RCX: 00000000004af19b [ 69.422100][ T8483] RDX: 0000000000001000 RSI: 000000c0000d0000 RDI: 0000000000000006 [ 69.430050][ T8483] RBP: 000000c0002f9878 R08: 0000000000000001 R09: 0000000000000002 [ 69.438021][ T8483] R10: 000000000000442d R11: 0000000000000212 R12: ffffffffffffffff [ 69.445977][ T8483] R13: 0000000000002000 R14: 0000000000000004 R15: 0000000000000004 [ 69.454722][ T8483] Kernel Offset: disabled [ 69.459041][ T8483] Rebooting in 86400 seconds..