Warning: Permanently added '10.128.0.13' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 40.877133] kasan: CONFIG_KASAN_INLINE enabled [ 40.881821] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 40.889226] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 40.895464] CPU: 1 PID: 6057 Comm: syz-executor341 Not tainted 4.20.0-rc7+ #380 [ 40.902905] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.912247] RIP: 0010:tcp_splice_read+0x1fd/0xf90 [ 40.917101] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 52 0c 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6d 18 49 8d 7d 78 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e e5 0a 00 00 45 8b 6d 78 31 ff [ 40.936014] RSP: 0018:ffff8881c163fa58 EFLAGS: 00010206 [ 40.941368] RAX: dffffc0000000000 RBX: ffff8881c163fbb0 RCX: 1ffff110382a69c6 [ 40.948617] RDX: 000000000000000f RSI: 0000000000000000 RDI: 0000000000000078 [ 40.955866] RBP: ffff8881c163fbd8 R08: ffff8881c1534e30 R09: 0000000000000006 [ 40.963115] R10: 0000000000000000 R11: ffff8881c1534540 R12: ffff8881c154cc00 [ 40.970365] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8881c163fd58 [ 40.977634] FS: 0000000000dc5880(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 [ 40.985840] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.991702] CR2: 0000000020000140 CR3: 00000001c1d0f000 CR4: 00000000001406e0 [ 40.998953] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.006204] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.013449] Call Trace: [ 41.016022] ? compat_tcp_getsockopt+0x80/0x80 [ 41.020593] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 41.025171] ? trace_hardirqs_on+0xbd/0x310 [ 41.029473] ? lock_release+0xa00/0xa00 [ 41.033427] ? lock_sock_nested+0xe2/0x120 [ 41.037645] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 41.043166] ? check_preemption_disabled+0x48/0x280 [ 41.048169] ? lock_sock_nested+0x9a/0x120 [ 41.052391] ? lock_sock_nested+0x9a/0x120 [ 41.056654] ? __local_bh_enable_ip+0x160/0x260 [ 41.061309] smc_splice_read+0x265/0x380 [ 41.065354] ? smc_unhash_sk+0x4b0/0x4b0 [ 41.069434] sock_splice_read+0xba/0x110 [ 41.073484] ? kernel_sock_shutdown+0x80/0x80 [ 41.077961] do_splice_to+0x12e/0x190 [ 41.081745] do_splice+0x1014/0x1430 [ 41.085442] ? opipe_prep.part.14+0x3b0/0x3b0 [ 41.089922] __x64_sys_splice+0x2c1/0x330 [ 41.094086] do_syscall_64+0x1b9/0x820 [ 41.097967] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 41.103325] ? syscall_return_slowpath+0x5e0/0x5e0 [ 41.108264] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.113086] ? trace_hardirqs_on_caller+0x310/0x310 [ 41.118084] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 41.123084] ? prepare_exit_to_usermode+0x291/0x3b0 [ 41.128081] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.132905] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 41.138086] RIP: 0033:0x4400e9 [ 41.141261] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 41.160144] RSP: 002b:00007ffd515b0698 EFLAGS: 00000212 ORIG_RAX: 0000000000000113 [ 41.167830] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004400e9 [ 41.175078] RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000005 [ 41.182331] RBP: 00000000006ca018 R08: 0000000000010009 R09: 0000000000000002 [ 41.189596] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000401970 [ 41.196845] R13: 0000000000401a00 R14: 0000000000000000 R15: 0000000000000000 [ 41.204095] Modules linked in: [ 41.207373] ---[ end trace 6a543f6aeca6b8a9 ]--- [ 41.212176] RIP: 0010:tcp_splice_read+0x1fd/0xf90 [ 41.217001] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 52 0c 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6d 18 49 8d 7d 78 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e e5 0a 00 00 45 8b 6d 78 31 ff [ 41.235916] RSP: 0018:ffff8881c163fa58 EFLAGS: 00010206 [ 41.241292] RAX: dffffc0000000000 RBX: ffff8881c163fbb0 RCX: 1ffff110382a69c6 [ 41.248584] RDX: 000000000000000f RSI: 0000000000000000 RDI: 0000000000000078 [ 41.255897] RBP: ffff8881c163fbd8 R08: ffff8881c1534e30 R09: 0000000000000006 [ 41.263178] R10: 0000000000000000 R11: ffff8881c1534540 R12: ffff8881c154cc00 [ 41.270461] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8881c163fd58 [ 41.277716] FS: 0000000000dc5880(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 [ 41.285954] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.291864] CR2: 0000000020000140 CR3: 00000001c1d0f000 CR4: 00000000001406e0 [ 41.299151] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.306427] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.313706] Kernel panic - not syncing: Fatal exception [ 41.319955] Kernel Offset: disabled [ 41.323576] Rebooting in 86400 seconds..