Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.130' (ECDSA) to the list of known hosts. 2021/05/03 12:05:58 fuzzer started 2021/05/03 12:05:58 dialing manager at 10.128.0.169:44661 2021/05/03 12:05:59 syscalls: 3571 2021/05/03 12:05:59 code coverage: enabled 2021/05/03 12:05:59 comparison tracing: enabled 2021/05/03 12:05:59 extra coverage: enabled 2021/05/03 12:05:59 setuid sandbox: enabled 2021/05/03 12:05:59 namespace sandbox: enabled 2021/05/03 12:05:59 Android sandbox: /sys/fs/selinux/policy does not exist 2021/05/03 12:05:59 fault injection: enabled 2021/05/03 12:05:59 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/05/03 12:05:59 net packet injection: enabled 2021/05/03 12:05:59 net device setup: enabled 2021/05/03 12:05:59 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2021/05/03 12:05:59 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/05/03 12:05:59 USB emulation: enabled 2021/05/03 12:05:59 hci packet injection: enabled 2021/05/03 12:05:59 wifi device emulation: enabled 2021/05/03 12:05:59 802.15.4 emulation: enabled 2021/05/03 12:05:59 fetching corpus: 50, signal 59915/61771 (executing program) 2021/05/03 12:05:59 fetching corpus: 100, signal 86858/90416 (executing program) 2021/05/03 12:05:59 fetching corpus: 150, signal 109280/114419 (executing program) 2021/05/03 12:05:59 fetching corpus: 200, signal 128239/134907 (executing program) syzkaller login: [ 74.037380][ T8434] general protection fault, probably for non-canonical address 0xdffffc00001a9a81: 0000 [#1] PREEMPT SMP KASAN [ 74.050808][ T8434] KASAN: probably user-memory-access in range [0x0000000000d4d408-0x0000000000d4d40f] [ 74.061059][ T8434] CPU: 1 PID: 8434 Comm: syz-fuzzer Not tainted 5.12.0-rc8-next-20210423-syzkaller #0 [ 74.071445][ T8434] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.083146][ T8434] RIP: 0010:skb_release_data+0x3a0/0x750 [ 74.089532][ T8434] Code: 48 8b 04 24 48 c1 e8 03 42 80 3c 30 00 0f 85 d3 02 00 00 49 63 c4 48 c1 e0 04 4a 8b 6c 28 30 48 8d 7d 08 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 0f 85 a7 02 00 00 48 8b 45 08 31 ff 48 89 c3 48 89 [ 74.110776][ T8434] RSP: 0018:ffffc9000167f878 EFLAGS: 00010206 [ 74.117802][ T8434] RAX: 00000000001a9a81 RBX: 0000000000000011 RCX: 0000000000000000 [ 74.126510][ T8434] RDX: ffff888019a39c80 RSI: ffffffff8703c746 RDI: 0000000000d4d408 [ 74.135613][ T8434] RBP: 0000000000d4d400 R08: 0000000000000011 R09: 0000000000d4d400 [ 74.145445][ T8434] R10: ffffffff8703c733 R11: 0000000000000000 R12: 0000000000000010 [ 74.155865][ T8434] R13: ffff888035337ecc R14: dffffc0000000000 R15: ffff88801e50a640 [ 74.165828][ T8434] FS: 000000c00002e890(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 74.177318][ T8434] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.185034][ T8434] CR2: 000000c00110a018 CR3: 000000002ef43000 CR4: 00000000001506e0 [ 74.194209][ T8434] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.202911][ T8434] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.214669][ T8434] Call Trace: [ 74.218509][ T8434] __kfree_skb+0x46/0x60 [ 74.223446][ T8434] tcp_recvmsg_locked+0x130f/0x22f0 [ 74.229003][ T8434] ? tcp_splice_read+0x8b0/0x8b0 [ 74.234421][ T8434] ? mark_held_locks+0x9f/0xe0 [ 74.239970][ T8434] ? __local_bh_enable_ip+0xa0/0x120 [ 74.245666][ T8434] tcp_recvmsg+0x134/0x550 [ 74.250534][ T8434] ? tcp_recvmsg_locked+0x22f0/0x22f0 [ 74.256537][ T8434] ? aa_sk_perm+0x311/0xab0 [ 74.262069][ T8434] inet_recvmsg+0x11b/0x5e0 [ 74.266910][ T8434] ? inet_sendpage+0x140/0x140 [ 74.272197][ T8434] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 74.279183][ T8434] ? security_socket_recvmsg+0x8f/0xc0 [ 74.285388][ T8434] sock_read_iter+0x33c/0x470 [ 74.291606][ T8434] ? ____sys_recvmsg+0x600/0x600 [ 74.297110][ T8434] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 74.303531][ T8434] ? fsnotify+0xa58/0x1060 [ 74.308316][ T8434] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 74.314762][ T8434] new_sync_read+0x5b7/0x6e0 [ 74.319903][ T8434] ? ksys_lseek+0x1b0/0x1b0 [ 74.324423][ T8434] vfs_read+0x35c/0x570 [ 74.328986][ T8434] ksys_read+0x1ee/0x250 [ 74.333493][ T8434] ? vfs_write+0xa40/0xa40 [ 74.338100][ T8434] ? syscall_enter_from_user_mode+0x27/0x70 [ 74.344623][ T8434] do_syscall_64+0x3a/0xb0 [ 74.349481][ T8434] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 74.355527][ T8434] RIP: 0033:0x4af19b [ 74.360247][ T8434] 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 [ 74.383086][ T8434] RSP: 002b:000000c0003a1828 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 74.392901][ T8434] RAX: ffffffffffffffda RBX: 000000c00001e800 RCX: 00000000004af19b [ 74.401715][ T8434] RDX: 0000000000001000 RSI: 000000c0001da000 RDI: 0000000000000006 [ 74.410399][ T8434] RBP: 000000c0003a1878 R08: 0000000000000001 R09: 0000000000000002 [ 74.419596][ T8434] R10: 00000000000068e5 R11: 0000000000000212 R12: ffffffffffffffff [ 74.427842][ T8434] R13: 0000000000002000 R14: 0000000000000002 R15: 0000000000000002 [ 74.436270][ T8434] Modules linked in: [ 74.441957][ T8434] ---[ end trace 8c3a01877d755e1d ]--- [ 74.447713][ T8434] RIP: 0010:skb_release_data+0x3a0/0x750 [ 74.455542][ T8434] Code: 48 8b 04 24 48 c1 e8 03 42 80 3c 30 00 0f 85 d3 02 00 00 49 63 c4 48 c1 e0 04 4a 8b 6c 28 30 48 8d 7d 08 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 0f 85 a7 02 00 00 48 8b 45 08 31 ff 48 89 c3 48 89 [ 74.478535][ T8434] RSP: 0018:ffffc9000167f878 EFLAGS: 00010206 [ 74.485439][ T8434] RAX: 00000000001a9a81 RBX: 0000000000000011 RCX: 0000000000000000 [ 74.495129][ T8434] RDX: ffff888019a39c80 RSI: ffffffff8703c746 RDI: 0000000000d4d408 [ 74.504319][ T8434] RBP: 0000000000d4d400 R08: 0000000000000011 R09: 0000000000d4d400 [ 74.513748][ T8434] R10: ffffffff8703c733 R11: 0000000000000000 R12: 0000000000000010 [ 74.522514][ T8434] R13: ffff888035337ecc R14: dffffc0000000000 R15: ffff88801e50a640 [ 74.531283][ T8434] FS: 000000c00002e890(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 74.542326][ T8434] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.549356][ T8434] CR2: 00007fdb321c0000 CR3: 000000002ef43000 CR4: 00000000001506e0 [ 74.557696][ T8434] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.566698][ T8434] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.575057][ T8434] Kernel panic - not syncing: Fatal exception [ 74.583047][ T8434] Kernel Offset: disabled [ 74.587612][ T8434] Rebooting in 86400 seconds..