[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 54.613237][ T26] audit: type=1800 audit(1582355166.123:25): pid=8679 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 54.632495][ T26] audit: type=1800 audit(1582355166.133:26): pid=8679 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 54.652684][ T26] audit: type=1800 audit(1582355166.133:27): pid=8679 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.95' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 77.640106][ T8831] IPVS: ftp: loaded support on port[0] = 21 [ 77.728972][ T8831] infiniband syz1: set active [ 77.734066][ T8831] infiniband syz1: added syz_tun [ 77.753245][ T8831] general protection fault, probably for non-canonical address 0xdffffc0000000086: 0000 [#1] PREEMPT SMP KASAN [ 77.765249][ T8831] KASAN: null-ptr-deref in range [0x0000000000000430-0x0000000000000437] [ 77.773743][ T8831] CPU: 0 PID: 8831 Comm: syz-executor422 Not tainted 5.6.0-rc2-syzkaller #0 [ 77.782520][ T8831] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.792696][ T8831] RIP: 0010:rds_ib_add_one+0x81/0xe50 [ 77.798049][ T8831] Code: b7 a8 06 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 0e e4 1d fa bb 30 04 00 00 49 03 1e 48 89 d8 48 c1 e8 03 <42> 8a 04 28 84 c0 0f 85 f0 0a 00 00 8b 1b 48 c7 c0 28 0c 09 89 48 [ 77.818366][ T8831] RSP: 0018:ffffc90001df7298 EFLAGS: 00010202 [ 77.824478][ T8831] RAX: 0000000000000086 RBX: 0000000000000430 RCX: 0000000000000000 [ 77.832439][ T8831] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 [ 77.840469][ T8831] RBP: ffffc90001df72f0 R08: ffffffff87964c3c R09: ffffed101509489c [ 77.849021][ T8831] R10: ffffed101509489c R11: 0000000000000000 R12: 0000000000000000 [ 77.857074][ T8831] R13: dffffc0000000000 R14: ffff8880a84a46a8 R15: ffff8880a84a4000 [ 77.865123][ T8831] FS: 0000000000c0c880(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 [ 77.874037][ T8831] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.880903][ T8831] CR2: 0000000020000000 CR3: 000000009de48000 CR4: 00000000001406f0 [ 77.888972][ T8831] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.896929][ T8831] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.905492][ T8831] Call Trace: [ 77.908771][ T8831] ? _raw_spin_unlock+0x27/0x40 [ 77.913608][ T8831] ? rds_ib_get_client_data+0x1a0/0x1a0 [ 77.919172][ T8831] add_client_context+0x482/0x660 [ 77.924193][ T8831] enable_device_and_get+0x15b/0x370 [ 77.929462][ T8831] ib_register_device+0x124d/0x15b0 [ 77.934712][ T8831] ? crypto_alloc_tfm+0x335/0x360 [ 77.939738][ T8831] rxe_register_device+0x3f6/0x530 [ 77.944847][ T8831] rxe_add+0x1373/0x14f0 [ 77.949077][ T8831] rxe_net_add+0x79/0xe0 [ 77.953305][ T8831] rxe_newlink+0x31/0x90 [ 77.957588][ T8831] nldev_newlink+0x403/0x4a0 [ 77.962274][ T8831] ? nldev_set_doit+0x340/0x340 [ 77.967112][ T8831] rdma_nl_rcv+0x701/0xa20 [ 77.971568][ T8831] netlink_unicast+0x766/0x920 [ 77.976504][ T8831] netlink_sendmsg+0xa2b/0xd40 [ 77.981259][ T8831] ? netlink_getsockopt+0x9f0/0x9f0 [ 77.986444][ T8831] ____sys_sendmsg+0x4f7/0x7f0 [ 77.991206][ T8831] __sys_sendmsg+0x1ed/0x290 [ 77.995778][ T8831] ? handle_mm_fault+0x173a/0x2900 [ 78.000920][ T8831] ? __kasan_check_write+0x14/0x20 [ 78.006636][ T8831] ? __up_read+0x231/0x740 [ 78.011084][ T8831] ? check_preemption_disabled+0xb4/0x260 [ 78.016781][ T8831] ? debug_smp_processor_id+0x9/0x20 [ 78.022056][ T8831] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 78.027599][ T8831] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 78.033438][ T8831] ? do_syscall_64+0x1d/0x1c0 [ 78.038114][ T8831] __x64_sys_sendmsg+0x7f/0x90 [ 78.042855][ T8831] do_syscall_64+0xf7/0x1c0 [ 78.047341][ T8831] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.053229][ T8831] RIP: 0033:0x4413b9 [ 78.057105][ T8831] 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 6b 0e fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 78.076931][ T8831] RSP: 002b:00007ffdc643abf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 78.085332][ T8831] RAX: ffffffffffffffda RBX: 00007ffdc643ac10 RCX: 00000000004413b9 [ 78.093412][ T8831] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003 [ 78.101597][ T8831] RBP: 0000000000000003 R08: 00000000bb1414ac R09: 00000000bb1414ac [ 78.109554][ T8831] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 78.117507][ T8831] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 78.125505][ T8831] Modules linked in: [ 78.129794][ T8831] ---[ end trace f3963d798a1080bf ]--- [ 78.135370][ T8831] RIP: 0010:rds_ib_add_one+0x81/0xe50 [ 78.140780][ T8831] Code: b7 a8 06 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 0e e4 1d fa bb 30 04 00 00 49 03 1e 48 89 d8 48 c1 e8 03 <42> 8a 04 28 84 c0 0f 85 f0 0a 00 00 8b 1b 48 c7 c0 28 0c 09 89 48 [ 78.160566][ T8831] RSP: 0018:ffffc90001df7298 EFLAGS: 00010202 [ 78.166714][ T8831] RAX: 0000000000000086 RBX: 0000000000000430 RCX: 0000000000000000 [ 78.174682][ T8831] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 [ 78.182742][ T8831] RBP: ffffc90001df72f0 R08: ffffffff87964c3c R09: ffffed101509489c [ 78.190735][ T8831] R10: ffffed101509489c R11: 0000000000000000 R12: 0000000000000000 [ 78.198856][ T8831] R13: dffffc0000000000 R14: ffff8880a84a46a8 R15: ffff8880a84a4000 [ 78.207178][ T8831] FS: 0000000000c0c880(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 [ 78.216169][ T8831] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.222775][ T8831] CR2: 0000000020000000 CR3: 000000009de48000 CR4: 00000000001406f0 [ 78.230929][ T8831] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.238921][ T8831] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.246929][ T8831] Kernel panic - not syncing: Fatal exception [ 78.254507][ T8831] Kernel Offset: disabled [ 78.258831][ T8831] Rebooting in 86400 seconds..