Warning: Permanently added '10.128.0.104' (ECDSA) to the list of known hosts.
2021/05/03 02:01:30 fuzzer started
2021/05/03 02:01:31 dialing manager at 10.128.0.169:44661
2021/05/03 02:01:31 syscalls: 3571
2021/05/03 02:01:31 code coverage: enabled
2021/05/03 02:01:31 comparison tracing: enabled
2021/05/03 02:01:31 extra coverage: enabled
2021/05/03 02:01:31 setuid sandbox: enabled
2021/05/03 02:01:31 namespace sandbox: enabled
2021/05/03 02:01:31 Android sandbox: /sys/fs/selinux/policy does not exist
2021/05/03 02:01:31 fault injection: enabled
2021/05/03 02:01:31 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2021/05/03 02:01:31 net packet injection: enabled
2021/05/03 02:01:31 net device setup: enabled
2021/05/03 02:01:31 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist
2021/05/03 02:01:31 devlink PCI setup: PCI device 0000:00:10.0 is not available
2021/05/03 02:01:31 USB emulation: enabled
2021/05/03 02:01:31 hci packet injection: enabled
2021/05/03 02:01:31 wifi device emulation: enabled
2021/05/03 02:01:31 802.15.4 emulation: enabled
2021/05/03 02:01:31 fetching corpus: 0, signal 0/2000 (executing program)
2021/05/03 02:01:31 fetching corpus: 50, signal 63117/66807 (executing program)
2021/05/03 02:01:32 fetching corpus: 100, signal 104021/109259 (executing program)
2021/05/03 02:01:32 fetching corpus: 150, signal 122132/128907 (executing program)
syzkaller login: [   70.514101][ T8433] ==================================================================
[   70.522302][ T8433] BUG: KASAN: use-after-free in __skb_datagram_iter+0x6b8/0x770
[   70.530012][ T8433] Read of size 4 at addr ffff888033560004 by task syz-fuzzer/8433
[   70.537843][ T8433] 
[   70.540173][ T8433] CPU: 0 PID: 8433 Comm: syz-fuzzer Not tainted 5.12.0-rc8-next-20210423-syzkaller #0
[   70.549701][ T8433] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   70.559777][ T8433] Call Trace:
[   70.563045][ T8433]  dump_stack+0x141/0x1d7
[   70.567380][ T8433]  ? __skb_datagram_iter+0x6b8/0x770
[   70.572654][ T8433]  print_address_description.constprop.0.cold+0x5b/0x2f8
[   70.579682][ T8433]  ? __skb_datagram_iter+0x6b8/0x770
[   70.584964][ T8433]  ? __skb_datagram_iter+0x6b8/0x770
[   70.590232][ T8433]  kasan_report.cold+0x7c/0xd8
[   70.595030][ T8433]  ? __skb_datagram_iter+0x6b8/0x770
[   70.600340][ T8433]  __skb_datagram_iter+0x6b8/0x770
[   70.605709][ T8433]  ? zerocopy_sg_from_iter+0x110/0x110
[   70.611178][ T8433]  skb_copy_datagram_iter+0x40/0x50
[   70.616381][ T8433]  tcp_recvmsg_locked+0x1048/0x22f0
[   70.621619][ T8433]  ? tcp_splice_read+0x8b0/0x8b0
[   70.626552][ T8433]  ? mark_held_locks+0x9f/0xe0
[   70.631315][ T8433]  ? __local_bh_enable_ip+0xa0/0x120
[   70.636590][ T8433]  tcp_recvmsg+0x134/0x550
[   70.641004][ T8433]  ? tcp_recvmsg_locked+0x22f0/0x22f0
[   70.646365][ T8433]  ? aa_sk_perm+0x311/0xab0
[   70.650852][ T8433]  inet_recvmsg+0x11b/0x5e0
[   70.655355][ T8433]  ? inet_sendpage+0x140/0x140
[   70.660107][ T8433]  ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70
[   70.666335][ T8433]  ? security_socket_recvmsg+0x8f/0xc0
[   70.671784][ T8433]  sock_read_iter+0x33c/0x470
[   70.677146][ T8433]  ? ____sys_recvmsg+0x600/0x600
[   70.682074][ T8433]  ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70
[   70.688311][ T8433]  ? fsnotify+0xa58/0x1060
[   70.692726][ T8433]  ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70
[   70.699016][ T8433]  new_sync_read+0x5b7/0x6e0
[   70.703692][ T8433]  ? ksys_lseek+0x1b0/0x1b0
[   70.708306][ T8433]  ? lockdep_hardirqs_on_prepare+0x400/0x400
[   70.714317][ T8433]  vfs_read+0x35c/0x570
[   70.718486][ T8433]  ksys_read+0x1ee/0x250
[   70.722739][ T8433]  ? vfs_write+0xa40/0xa40
[   70.727146][ T8433]  ? syscall_enter_from_user_mode+0x27/0x70
[   70.733036][ T8433]  do_syscall_64+0x3a/0xb0
[   70.737464][ T8433]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[   70.743356][ T8433] RIP: 0033:0x4af19b
[   70.747248][ T8433] 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
[   70.766869][ T8433] RSP: 002b:000000c0000a3828 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   70.775296][ T8433] RAX: ffffffffffffffda RBX: 000000c00001e800 RCX: 00000000004af19b
[   70.783960][ T8433] RDX: 0000000000001000 RSI: 000000c000202000 RDI: 0000000000000006
[   70.791932][ T8433] RBP: 000000c0000a3878 R08: 0000000000000001 R09: 0000000000000002
[   70.799903][ T8433] R10: 0000000000007146 R11: 0000000000000212 R12: 0000000000007142
[   70.807867][ T8433] R13: 0000000000000080 R14: 0000000000000004 R15: 0000000000000004
[   70.815843][ T8433] 
[   70.818153][ T8433] The buggy address belongs to the page:
[   70.823791][ T8433] page:ffffea0000cd5800 refcount:0 mapcount:-128 mapping:0000000000000000 index:0x0 pfn:0x33560
[   70.834198][ T8433] flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
[   70.841302][ T8433] raw: 00fff00000000000 ffffea0000cd6e08 ffffea0000cd5408 0000000000000000
[   70.849894][ T8433] raw: 0000000000000000 0000000000000003 00000000ffffff7f 0000000000000000
[   70.858455][ T8433] page dumped because: kasan: bad access detected
[   70.864843][ T8433] 
[   70.867158][ T8433] Memory state around the buggy address:
[   70.872780][ T8433]  ffff88803355ff00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   70.880823][ T8433]  ffff88803355ff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   70.888866][ T8433] >ffff888033560000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   70.896904][ T8433]                    ^
[   70.900951][ T8433]  ffff888033560080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   70.909006][ T8433]  ffff888033560100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   70.917048][ T8433] ==================================================================
[   70.925096][ T8433] Disabling lock debugging due to kernel taint
[   70.933645][ T8433] Kernel panic - not syncing: panic_on_warn set ...
[   70.940252][ T8433] CPU: 1 PID: 8433 Comm: syz-fuzzer Tainted: G    B             5.12.0-rc8-next-20210423-syzkaller #0
[   70.951189][ T8433] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   70.961247][ T8433] Call Trace:
[   70.964534][ T8433]  dump_stack+0x141/0x1d7
[   70.968991][ T8433]  panic+0x306/0x73d
[   70.972897][ T8433]  ? __warn_printk+0xf3/0xf3
[   70.977492][ T8433]  ? preempt_schedule_common+0x59/0xc0
[   70.982957][ T8433]  ? __skb_datagram_iter+0x6b8/0x770
[   70.988251][ T8433]  ? preempt_schedule_thunk+0x16/0x18
[   70.993652][ T8433]  ? trace_hardirqs_on+0x38/0x1c0
[   70.998680][ T8433]  ? trace_hardirqs_on+0x51/0x1c0
[   71.003713][ T8433]  ? __skb_datagram_iter+0x6b8/0x770
[   71.008998][ T8433]  ? __skb_datagram_iter+0x6b8/0x770
[   71.014282][ T8433]  end_report.cold+0x5a/0x5a
[   71.018877][ T8433]  kasan_report.cold+0x6a/0xd8
[   71.023731][ T8433]  ? __skb_datagram_iter+0x6b8/0x770
[   71.029017][ T8433]  __skb_datagram_iter+0x6b8/0x770
[   71.034130][ T8433]  ? zerocopy_sg_from_iter+0x110/0x110
[   71.039594][ T8433]  skb_copy_datagram_iter+0x40/0x50
[   71.044795][ T8433]  tcp_recvmsg_locked+0x1048/0x22f0
[   71.050009][ T8433]  ? tcp_splice_read+0x8b0/0x8b0
[   71.055059][ T8433]  ? mark_held_locks+0x9f/0xe0
[   71.059830][ T8433]  ? __local_bh_enable_ip+0xa0/0x120
[   71.066272][ T8433]  tcp_recvmsg+0x134/0x550
[   71.070691][ T8433]  ? tcp_recvmsg_locked+0x22f0/0x22f0
[   71.076076][ T8433]  ? aa_sk_perm+0x311/0xab0
[   71.080598][ T8433]  inet_recvmsg+0x11b/0x5e0
[   71.085455][ T8433]  ? inet_sendpage+0x140/0x140
[   71.090227][ T8433]  ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70
[   71.096476][ T8433]  ? security_socket_recvmsg+0x8f/0xc0
[   71.101945][ T8433]  sock_read_iter+0x33c/0x470
[   71.106764][ T8433]  ? ____sys_recvmsg+0x600/0x600
[   71.111728][ T8433]  ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70
[   71.117998][ T8433]  ? fsnotify+0xa58/0x1060
[   71.122434][ T8433]  ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70
[   71.128697][ T8433]  new_sync_read+0x5b7/0x6e0
[   71.133295][ T8433]  ? ksys_lseek+0x1b0/0x1b0
[   71.137885][ T8433]  ? lockdep_hardirqs_on_prepare+0x400/0x400
[   71.144010][ T8433]  vfs_read+0x35c/0x570
[   71.148180][ T8433]  ksys_read+0x1ee/0x250
[   71.152440][ T8433]  ? vfs_write+0xa40/0xa40
[   71.156865][ T8433]  ? syscall_enter_from_user_mode+0x27/0x70
[   71.162789][ T8433]  do_syscall_64+0x3a/0xb0
[   71.167213][ T8433]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[   71.173389][ T8433] RIP: 0033:0x4af19b
[   71.177284][ T8433] 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
[   71.197152][ T8433] RSP: 002b:000000c0000a3828 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   71.205581][ T8433] RAX: ffffffffffffffda RBX: 000000c00001e800 RCX: 00000000004af19b
[   71.213821][ T8433] RDX: 0000000000001000 RSI: 000000c000202000 RDI: 0000000000000006
[   71.221798][ T8433] RBP: 000000c0000a3878 R08: 0000000000000001 R09: 0000000000000002
[   71.229777][ T8433] R10: 0000000000007146 R11: 0000000000000212 R12: 0000000000007142
[   71.237759][ T8433] R13: 0000000000000080 R14: 0000000000000004 R15: 0000000000000004
[   71.246261][ T8433] Kernel Offset: disabled
[   71.250579][ T8433] Rebooting in 86400 seconds..