[ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. Starting Load/Save RF Kill Switch Status... [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.85' (ECDSA) to the list of known hosts. 2021/05/01 19:06:15 fuzzer started 2021/05/01 19:06:15 dialing manager at 10.128.0.169:44661 2021/05/01 19:06:15 syscalls: 3571 2021/05/01 19:06:15 code coverage: enabled 2021/05/01 19:06:15 comparison tracing: enabled 2021/05/01 19:06:15 extra coverage: enabled 2021/05/01 19:06:15 setuid sandbox: enabled 2021/05/01 19:06:15 namespace sandbox: enabled 2021/05/01 19:06:15 Android sandbox: /sys/fs/selinux/policy does not exist 2021/05/01 19:06:15 fault injection: enabled 2021/05/01 19:06:15 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/05/01 19:06:15 net packet injection: enabled 2021/05/01 19:06:15 net device setup: enabled 2021/05/01 19:06:15 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2021/05/01 19:06:15 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/05/01 19:06:15 USB emulation: enabled 2021/05/01 19:06:15 hci packet injection: enabled 2021/05/01 19:06:15 wifi device emulation: enabled 2021/05/01 19:06:15 802.15.4 emulation: enabled 2021/05/01 19:06:15 fetching corpus: 0, signal 0/2000 (executing program) syzkaller login: [ 66.777533][ T8442] general protection fault, probably for non-canonical address 0xdffffc00001784c1: 0000 [#1] PREEMPT SMP KASAN [ 66.789292][ T8442] KASAN: probably user-memory-access in range [0x0000000000bc2608-0x0000000000bc260f] [ 66.798836][ T8442] CPU: 1 PID: 8442 Comm: syz-fuzzer Not tainted 5.12.0-rc8-next-20210423-syzkaller #0 [ 66.808385][ T8442] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.818439][ T8442] RIP: 0010:skb_release_data+0x3a0/0x750 [ 66.824971][ T8442] 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 [ 66.844579][ T8442] RSP: 0018:ffffc9000166f878 EFLAGS: 00010202 [ 66.850627][ T8442] RAX: 00000000001784c1 RBX: 0000000000000011 RCX: 0000000000000000 [ 66.858607][ T8442] RDX: ffff888019725580 RSI: ffffffff8703c746 RDI: 0000000000bc2608 [ 66.866557][ T8442] RBP: 0000000000bc2600 R08: 0000000000000011 R09: 0000000000bc2600 [ 66.874509][ T8442] R10: ffffffff8703c733 R11: 0000000000000000 R12: 0000000000000010 [ 66.882465][ T8442] R13: ffff88802f08fecc R14: dffffc0000000000 R15: ffff888024549000 [ 66.890428][ T8442] FS: 000000c000096090(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 66.899344][ T8442] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.905921][ T8442] CR2: 00007fff701720f8 CR3: 0000000024cf2000 CR4: 00000000001506e0 [ 66.913907][ T8442] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.921868][ T8442] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.929828][ T8442] Call Trace: [ 66.933103][ T8442] __kfree_skb+0x46/0x60 [ 66.937360][ T8442] tcp_recvmsg_locked+0x130f/0x22f0 [ 66.942676][ T8442] ? tcp_splice_read+0x8b0/0x8b0 [ 66.947606][ T8442] ? mark_held_locks+0x9f/0xe0 [ 66.952376][ T8442] ? __local_bh_enable_ip+0xa0/0x120 [ 66.957664][ T8442] tcp_recvmsg+0x134/0x550 [ 66.962089][ T8442] ? tcp_recvmsg_locked+0x22f0/0x22f0 [ 66.967459][ T8442] ? aa_sk_perm+0x311/0xab0 [ 66.971959][ T8442] inet_recvmsg+0x11b/0x5e0 [ 66.976459][ T8442] ? inet_sendpage+0x140/0x140 [ 66.981216][ T8442] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 66.987452][ T8442] ? security_socket_recvmsg+0x8f/0xc0 [ 66.992901][ T8442] sock_read_iter+0x33c/0x470 [ 66.997571][ T8442] ? ____sys_recvmsg+0x600/0x600 [ 67.002501][ T8442] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 67.008734][ T8442] ? fsnotify+0xa58/0x1060 [ 67.013141][ T8442] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 67.019372][ T8442] new_sync_read+0x5b7/0x6e0 [ 67.023951][ T8442] ? ksys_lseek+0x1b0/0x1b0 [ 67.028439][ T8442] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 67.034416][ T8442] vfs_read+0x35c/0x570 [ 67.038560][ T8442] ksys_read+0x1ee/0x250 [ 67.042798][ T8442] ? vfs_write+0xa40/0xa40 [ 67.047209][ T8442] ? syscall_enter_from_user_mode+0x27/0x70 [ 67.053093][ T8442] do_syscall_64+0x3a/0xb0 [ 67.057513][ T8442] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 67.063401][ T8442] RIP: 0033:0x4af19b [ 67.067283][ T8442] 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 [ 67.086886][ T8442] RSP: 002b:000000c00016f850 EFLAGS: 00000206 ORIG_RAX: 0000000000000000 [ 67.095295][ T8442] RAX: ffffffffffffffda RBX: 000000c00001c000 RCX: 00000000004af19b [ 67.103260][ T8442] RDX: 0000000000001000 RSI: 000000c0001e6000 RDI: 0000000000000006 [ 67.111217][ T8442] RBP: 000000c00016f8a0 R08: 0000000000000001 R09: 0000000000000002 [ 67.119170][ T8442] R10: 00000000000019d1 R11: 0000000000000206 R12: 00000000000019cd [ 67.127137][ T8442] R13: 0000000000000400 R14: 0000000000000002 R15: 0000000000000002 [ 67.135100][ T8442] Modules linked in: [ 67.141325][ T8442] ---[ end trace 4dd8752476c5bcff ]--- [ 67.146803][ T8442] RIP: 0010:skb_release_data+0x3a0/0x750 [ 67.152759][ T8442] 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 [ 67.172671][ T8442] RSP: 0018:ffffc9000166f878 EFLAGS: 00010202 [ 67.178983][ T8442] RAX: 00000000001784c1 RBX: 0000000000000011 RCX: 0000000000000000 [ 67.186965][ T8442] RDX: ffff888019725580 RSI: ffffffff8703c746 RDI: 0000000000bc2608 [ 67.194996][ T8442] RBP: 0000000000bc2600 R08: 0000000000000011 R09: 0000000000bc2600 [ 67.203039][ T8442] R10: ffffffff8703c733 R11: 0000000000000000 R12: 0000000000000010 [ 67.211059][ T8442] R13: ffff88802f08fecc R14: dffffc0000000000 R15: ffff888024549000 [ 67.219059][ T8442] FS: 000000c000096090(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 67.228020][ T8442] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.234600][ T8442] CR2: 00007f8ae00410b8 CR3: 0000000024cf2000 CR4: 00000000001506e0 [ 67.242581][ T8442] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.250582][ T8442] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.258571][ T8442] Kernel panic - not syncing: Fatal exception [ 67.265275][ T8442] Kernel Offset: disabled [ 67.269587][ T8442] Rebooting in 86400 seconds..