[ OK ] Started OpenBSD Secure Shell server. [ 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. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.129' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 27.673643] kasan: CONFIG_KASAN_INLINE enabled [ 27.678879] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 27.686348] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 27.692566] Modules linked in: [ 27.695736] CPU: 1 PID: 7970 Comm: syz-executor604 Not tainted 4.14.280-syzkaller #0 [ 27.703592] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.712927] task: ffff888099aee240 task.stack: ffff8880b3158000 [ 27.718962] RIP: 0010:rds_ib_get_mr+0x58/0x200 [ 27.723532] RSP: 0018:ffff8880b315fc80 EFLAGS: 00010202 [ 27.728868] RAX: dffffc0000000000 RBX: ffff8880b315fd50 RCX: ffff8880b3e7979c [ 27.736114] RDX: 000000000000000d RSI: 0000000000000001 RDI: 0000000000000068 [ 27.743441] RBP: ffff8880958c53c0 R08: 0000000000000001 R09: ffff88809bdb0500 [ 27.750688] R10: ffff88809bdb0527 R11: 0000000000000000 R12: ffff88809bdb0500 [ 27.758048] R13: 0000000000000001 R14: ffff8880b3e7979c R15: 0000000000000000 [ 27.765297] FS: 00007f551c994700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 27.773499] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.779355] CR2: 00007f551c994718 CR3: 00000000b4a1f000 CR4: 00000000003406e0 [ 27.786604] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.793853] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.801097] Call Trace: [ 27.803667] __rds_rdma_map+0x5ab/0xea0 [ 27.807617] rds_get_mr+0x89/0xd0 [ 27.811043] ? rds_rdma_drop_keys+0x210/0x210 [ 27.815523] rds_setsockopt+0x227/0x750 [ 27.819470] ? rds_create+0x4b0/0x4b0 [ 27.823243] ? __fdget+0x19b/0x1f0 [ 27.826758] ? security_socket_setsockopt+0x83/0xb0 [ 27.831748] SyS_setsockopt+0x110/0x1e0 [ 27.835700] ? SyS_recv+0x40/0x40 [ 27.839127] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 27.844114] ? do_syscall_64+0x4c/0x640 [ 27.848059] ? SyS_recv+0x40/0x40 [ 27.851487] do_syscall_64+0x1d5/0x640 [ 27.855351] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 27.860511] RIP: 0033:0x7f551ca038f9 [ 27.864193] RSP: 002b:00007f551c994318 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 27.871871] RAX: ffffffffffffffda RBX: 00007f551ca8b3f8 RCX: 00007f551ca038f9 [ 27.879117] RDX: 0000000000000002 RSI: 0000000000000114 RDI: 0000000000000003 [ 27.886362] RBP: 00007f551ca8b3f0 R08: 0000000000000020 R09: 0000000000000000 [ 27.893610] R10: 0000000020000080 R11: 0000000000000246 R12: 00007f551ca8b3fc [ 27.900854] R13: 00007ffdc6f7002f R14: 00007f551c994400 R15: 0000000000022000 [ 27.908100] Code: fa 48 c1 ea 03 80 3c 02 00 0f 85 9e 01 00 00 4c 8b bd c0 04 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7f 68 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 6e 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d [ 27.927171] RIP: rds_ib_get_mr+0x58/0x200 RSP: ffff8880b315fc80 [ 27.934769] ---[ end trace ed8aedb1046e9858 ]--- [ 27.939567] Kernel panic - not syncing: Fatal exception [ 27.945168] Kernel Offset: disabled [ 27.948775] Rebooting in 86400 seconds..