[ 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. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.7' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 66.256736][ T6546] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 66.268592][ T6546] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 66.276984][ T6546] CPU: 0 PID: 6546 Comm: syz-executor902 Not tainted 5.15.0-rc5-syzkaller #0 [ 66.286075][ T6546] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.296116][ T6546] RIP: 0010:tls_sk_proto_close+0xd8/0xaf0 [ 66.301843][ T6546] Code: 02 00 0f 85 16 09 00 00 48 8b 85 e8 02 00 00 4d 8d 6c 24 14 4c 89 ea 48 c1 ea 03 48 89 44 24 18 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 02 4c 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 4f 07 00 00 [ 66.321446][ T6546] RSP: 0018:ffffc900052bfb70 EFLAGS: 00010203 [ 66.327502][ T6546] RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: 0000000000000000 [ 66.335544][ T6546] RDX: 0000000000000002 RSI: ffffffff87caa073 RDI: ffff8880798b0ee8 [ 66.343518][ T6546] RBP: ffff8880798b0c00 R08: 0000000000000001 R09: 00000000fffffff0 [ 66.351471][ T6546] R10: ffffffff87caa301 R11: 0000000000000000 R12: 0000000000000000 [ 66.359424][ T6546] R13: 0000000000000014 R14: ffff88807947a108 R15: 0000000000000001 [ 66.367379][ T6546] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 66.376293][ T6546] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.383211][ T6546] CR2: 00007f815a304ea8 CR3: 000000000b68e000 CR4: 00000000003506f0 [ 66.391167][ T6546] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.399141][ T6546] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.407094][ T6546] Call Trace: [ 66.410359][ T6546] ? wait_on_pending_writer+0x430/0x430 [ 66.415894][ T6546] ? __local_bh_enable_ip+0xa0/0x120 [ 66.421169][ T6546] tls_sk_proto_close+0x356/0xaf0 [ 66.426181][ T6546] ? wait_on_pending_writer+0x430/0x430 [ 66.431735][ T6546] ? down_write+0xe0/0x150 [ 66.436139][ T6546] ? ip_mc_drop_socket+0x16/0x260 [ 66.441154][ T6546] ? locks_remove_file+0x2f9/0x570 [ 66.446252][ T6546] inet_release+0x12e/0x280 [ 66.450739][ T6546] __sock_release+0xcd/0x280 [ 66.455336][ T6546] sock_close+0x18/0x20 [ 66.459474][ T6546] __fput+0x288/0x9f0 [ 66.463442][ T6546] ? __sock_release+0x280/0x280 [ 66.468288][ T6546] task_work_run+0xdd/0x1a0 [ 66.472787][ T6546] do_exit+0xbae/0x2a30 [ 66.476929][ T6546] ? __context_tracking_exit+0xb8/0xe0 [ 66.482705][ T6546] ? lock_downgrade+0x6e0/0x6e0 [ 66.487546][ T6546] ? lock_downgrade+0x6e0/0x6e0 [ 66.492385][ T6546] ? mm_update_next_owner+0x7a0/0x7a0 [ 66.497745][ T6546] do_group_exit+0x125/0x310 [ 66.502423][ T6546] __x64_sys_exit_group+0x3a/0x50 [ 66.507434][ T6546] do_syscall_64+0x35/0xb0 [ 66.511842][ T6546] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 66.517736][ T6546] RIP: 0033:0x7f815a2c0d89 [ 66.522136][ T6546] Code: Unable to access opcode bytes at RIP 0x7f815a2c0d5f. [ 66.529482][ T6546] RSP: 002b:00007ffd8fc7f188 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 66.537876][ T6546] RAX: ffffffffffffffda RBX: 00007f815a334270 RCX: 00007f815a2c0d89 [ 66.545832][ T6546] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 66.553786][ T6546] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000000000 [ 66.561743][ T6546] R10: 0000000000000004 R11: 0000000000000246 R12: 00007f815a334270 [ 66.569704][ T6546] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 66.577663][ T6546] Modules linked in: [ 66.583017][ T6546] ---[ end trace 4d0f7ad1b2e75836 ]--- [ 66.588478][ T6546] RIP: 0010:tls_sk_proto_close+0xd8/0xaf0 [ 66.594357][ T6546] Code: 02 00 0f 85 16 09 00 00 48 8b 85 e8 02 00 00 4d 8d 6c 24 14 4c 89 ea 48 c1 ea 03 48 89 44 24 18 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 02 4c 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 4f 07 00 00 [ 66.614050][ T6546] RSP: 0018:ffffc900052bfb70 EFLAGS: 00010203 [ 66.620133][ T6546] RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: 0000000000000000 [ 66.628512][ T6546] RDX: 0000000000000002 RSI: ffffffff87caa073 RDI: ffff8880798b0ee8 [ 66.636569][ T6546] RBP: ffff8880798b0c00 R08: 0000000000000001 R09: 00000000fffffff0 [ 66.644802][ T6546] R10: ffffffff87caa301 R11: 0000000000000000 R12: 0000000000000000 [ 66.652872][ T6546] R13: 0000000000000014 R14: ffff88807947a108 R15: 0000000000000001 [ 66.660864][ T6546] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 66.669830][ T6546] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.676445][ T6546] CR2: 00007fcf7637b000 CR3: 00000000232e8000 CR4: 00000000003506e0 [ 66.684472][ T6546] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.692474][ T6546] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.700443][ T6546] Kernel panic - not syncing: Fatal exception [ 66.706708][ T6546] Kernel Offset: disabled [ 66.711020][ T6546] Rebooting in 86400 seconds..