Warning: Permanently added '10.128.0.60' (ECDSA) to the list of known hosts. 2021/05/02 21:02:01 fuzzer started 2021/05/02 21:02:02 dialing manager at 10.128.0.169:44661 2021/05/02 21:02:02 syscalls: 3571 2021/05/02 21:02:02 code coverage: enabled 2021/05/02 21:02:02 comparison tracing: enabled 2021/05/02 21:02:02 extra coverage: enabled 2021/05/02 21:02:02 setuid sandbox: enabled 2021/05/02 21:02:02 namespace sandbox: enabled 2021/05/02 21:02:02 Android sandbox: /sys/fs/selinux/policy does not exist 2021/05/02 21:02:02 fault injection: enabled 2021/05/02 21:02:02 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/05/02 21:02:02 net packet injection: enabled 2021/05/02 21:02:02 net device setup: enabled 2021/05/02 21:02:02 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2021/05/02 21:02:02 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/05/02 21:02:02 USB emulation: enabled 2021/05/02 21:02:02 hci packet injection: enabled 2021/05/02 21:02:02 wifi device emulation: enabled 2021/05/02 21:02:02 802.15.4 emulation: enabled 2021/05/02 21:02:02 fetching corpus: 0, signal 0/2000 (executing program) 2021/05/02 21:02:02 fetching corpus: 50, signal 52166/55907 (executing program) 2021/05/02 21:02:02 fetching corpus: 100, signal 82878/88223 (executing program) 2021/05/02 21:02:02 fetching corpus: 150, signal 116063/122819 (executing program) 2021/05/02 21:02:02 fetching corpus: 200, signal 125959/134304 (executing program) syzkaller login: [ 71.176023][ T3257] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.182532][ T3257] ieee802154 phy1 wpan1: encryption failed: -22 2021/05/02 21:02:03 fetching corpus: 250, signal 150150/159803 (executing program) 2021/05/02 21:02:03 fetching corpus: 300, signal 161047/172089 (executing program) 2021/05/02 21:02:03 fetching corpus: 350, signal 170920/183331 (executing program) [ 71.865352][ T8418] ================================================================== [ 71.873582][ T8418] BUG: KASAN: use-after-free in __skb_datagram_iter+0x6b8/0x770 [ 71.881221][ T8418] Read of size 4 at addr ffff88802e870004 by task syz-fuzzer/8418 [ 71.889026][ T8418] [ 71.891332][ T8418] CPU: 0 PID: 8418 Comm: syz-fuzzer Not tainted 5.12.0-rc8-next-20210423-syzkaller #0 [ 71.900852][ T8418] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.910890][ T8418] Call Trace: [ 71.914210][ T8418] dump_stack+0x141/0x1d7 [ 71.918543][ T8418] ? __skb_datagram_iter+0x6b8/0x770 [ 71.924339][ T8418] print_address_description.constprop.0.cold+0x5b/0x2f8 [ 71.931352][ T8418] ? __skb_datagram_iter+0x6b8/0x770 [ 71.936621][ T8418] ? __skb_datagram_iter+0x6b8/0x770 [ 71.941911][ T8418] kasan_report.cold+0x7c/0xd8 [ 71.946680][ T8418] ? __skb_datagram_iter+0x6b8/0x770 [ 71.951949][ T8418] __skb_datagram_iter+0x6b8/0x770 [ 71.957044][ T8418] ? zerocopy_sg_from_iter+0x110/0x110 [ 71.962782][ T8418] skb_copy_datagram_iter+0x40/0x50 [ 71.967963][ T8418] tcp_recvmsg_locked+0x1048/0x22f0 [ 71.973157][ T8418] ? tcp_splice_read+0x8b0/0x8b0 [ 71.978080][ T8418] ? mark_held_locks+0x9f/0xe0 [ 71.982832][ T8418] ? __local_bh_enable_ip+0xa0/0x120 [ 71.988104][ T8418] tcp_recvmsg+0x134/0x550 [ 71.992533][ T8418] ? tcp_recvmsg_locked+0x22f0/0x22f0 [ 71.997896][ T8418] ? aa_sk_perm+0x311/0xab0 [ 72.002387][ T8418] inet_recvmsg+0x11b/0x5e0 [ 72.006893][ T8418] ? inet_sendpage+0x140/0x140 [ 72.011818][ T8418] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.018046][ T8418] ? security_socket_recvmsg+0x8f/0xc0 [ 72.023496][ T8418] sock_read_iter+0x33c/0x470 [ 72.028161][ T8418] ? ____sys_recvmsg+0x600/0x600 [ 72.033090][ T8418] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.039330][ T8418] ? fsnotify+0xa58/0x1060 [ 72.043732][ T8418] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.049960][ T8418] new_sync_read+0x5b7/0x6e0 [ 72.054538][ T8418] ? ksys_lseek+0x1b0/0x1b0 [ 72.059026][ T8418] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 72.065007][ T8418] vfs_read+0x35c/0x570 [ 72.069146][ T8418] ksys_read+0x1ee/0x250 [ 72.073371][ T8418] ? vfs_write+0xa40/0xa40 [ 72.077771][ T8418] ? syscall_enter_from_user_mode+0x27/0x70 [ 72.083665][ T8418] do_syscall_64+0x3a/0xb0 [ 72.088066][ T8418] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 72.093970][ T8418] RIP: 0033:0x4af19b [ 72.097851][ T8418] 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 [ 72.118483][ T8418] RSP: 002b:000000c000495828 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 72.126877][ T8418] RAX: ffffffffffffffda RBX: 000000c00001c000 RCX: 00000000004af19b [ 72.134835][ T8418] RDX: 0000000000001000 RSI: 000000c0001e6000 RDI: 0000000000000006 [ 72.142826][ T8418] RBP: 000000c000495878 R08: 0000000000000001 R09: 0000000000000002 [ 72.150783][ T8418] R10: 0000000000006949 R11: 0000000000000212 R12: 0000000000006945 [ 72.158747][ T8418] R13: 0000000000000200 R14: 0000000000000010 R15: 0000000000000002 [ 72.166719][ T8418] [ 72.169026][ T8418] The buggy address belongs to the page: [ 72.174656][ T8418] page:ffffea0000ba1c00 refcount:0 mapcount:-128 mapping:0000000000000000 index:0x0 pfn:0x2e870 [ 72.185053][ T8418] flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) [ 72.192167][ T8418] raw: 00fff00000000000 ffffea00006de008 ffff88813fffb978 0000000000000000 [ 72.200734][ T8418] raw: 0000000000000000 0000000000000003 00000000ffffff7f 0000000000000000 [ 72.209296][ T8418] page dumped because: kasan: bad access detected [ 72.215701][ T8418] [ 72.218006][ T8418] Memory state around the buggy address: [ 72.223617][ T8418] ffff88802e86ff00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 72.231657][ T8418] ffff88802e86ff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 72.239721][ T8418] >ffff88802e870000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 72.247759][ T8418] ^ [ 72.251806][ T8418] ffff88802e870080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 72.259846][ T8418] ffff88802e870100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 72.267884][ T8418] ================================================================== [ 72.275937][ T8418] Disabling lock debugging due to kernel taint [ 72.283620][ T8418] Kernel panic - not syncing: panic_on_warn set ... [ 72.290226][ T8418] CPU: 0 PID: 8418 Comm: syz-fuzzer Tainted: G B 5.12.0-rc8-next-20210423-syzkaller #0 [ 72.301159][ T8418] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.311194][ T8418] Call Trace: [ 72.314458][ T8418] dump_stack+0x141/0x1d7 [ 72.318777][ T8418] panic+0x306/0x73d [ 72.322665][ T8418] ? __warn_printk+0xf3/0xf3 [ 72.327253][ T8418] ? preempt_schedule_common+0x59/0xc0 [ 72.332709][ T8418] ? __skb_datagram_iter+0x6b8/0x770 [ 72.337980][ T8418] ? preempt_schedule_thunk+0x16/0x18 [ 72.343335][ T8418] ? trace_hardirqs_on+0x38/0x1c0 [ 72.348339][ T8418] ? trace_hardirqs_on+0x51/0x1c0 [ 72.353360][ T8418] ? __skb_datagram_iter+0x6b8/0x770 [ 72.358630][ T8418] ? __skb_datagram_iter+0x6b8/0x770 [ 72.363895][ T8418] end_report.cold+0x5a/0x5a [ 72.368481][ T8418] kasan_report.cold+0x6a/0xd8 [ 72.373242][ T8418] ? __skb_datagram_iter+0x6b8/0x770 [ 72.378506][ T8418] __skb_datagram_iter+0x6b8/0x770 [ 72.383608][ T8418] ? zerocopy_sg_from_iter+0x110/0x110 [ 72.389061][ T8418] skb_copy_datagram_iter+0x40/0x50 [ 72.394238][ T8418] tcp_recvmsg_locked+0x1048/0x22f0 [ 72.399438][ T8418] ? tcp_splice_read+0x8b0/0x8b0 [ 72.404356][ T8418] ? mark_held_locks+0x9f/0xe0 [ 72.409103][ T8418] ? __local_bh_enable_ip+0xa0/0x120 [ 72.414370][ T8418] tcp_recvmsg+0x134/0x550 [ 72.418773][ T8418] ? tcp_recvmsg_locked+0x22f0/0x22f0 [ 72.424137][ T8418] ? aa_sk_perm+0x311/0xab0 [ 72.428621][ T8418] inet_recvmsg+0x11b/0x5e0 [ 72.433107][ T8418] ? inet_sendpage+0x140/0x140 [ 72.437866][ T8418] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.444089][ T8418] ? security_socket_recvmsg+0x8f/0xc0 [ 72.449596][ T8418] sock_read_iter+0x33c/0x470 [ 72.454273][ T8418] ? ____sys_recvmsg+0x600/0x600 [ 72.459211][ T8418] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.465453][ T8418] ? fsnotify+0xa58/0x1060 [ 72.469865][ T8418] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.476118][ T8418] new_sync_read+0x5b7/0x6e0 [ 72.480798][ T8418] ? ksys_lseek+0x1b0/0x1b0 [ 72.485282][ T8418] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 72.491251][ T8418] vfs_read+0x35c/0x570 [ 72.495390][ T8418] ksys_read+0x1ee/0x250 [ 72.499627][ T8418] ? vfs_write+0xa40/0xa40 [ 72.504022][ T8418] ? syscall_enter_from_user_mode+0x27/0x70 [ 72.509898][ T8418] do_syscall_64+0x3a/0xb0 [ 72.514314][ T8418] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 72.520378][ T8418] RIP: 0033:0x4af19b [ 72.524252][ T8418] 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 [ 72.544295][ T8418] RSP: 002b:000000c000495828 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 72.552705][ T8418] RAX: ffffffffffffffda RBX: 000000c00001c000 RCX: 00000000004af19b [ 72.560655][ T8418] RDX: 0000000000001000 RSI: 000000c0001e6000 RDI: 0000000000000006 [ 72.568608][ T8418] RBP: 000000c000495878 R08: 0000000000000001 R09: 0000000000000002 [ 72.576645][ T8418] R10: 0000000000006949 R11: 0000000000000212 R12: 0000000000006945 [ 72.584693][ T8418] R13: 0000000000000200 R14: 0000000000000010 R15: 0000000000000002 [ 72.593238][ T8418] Kernel Offset: disabled [ 72.597573][ T8418] Rebooting in 86400 seconds..