[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 50.552793][ T27] audit: type=1800 audit(1582358175.596:25): pid=8506 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 50.598356][ T27] audit: type=1800 audit(1582358175.596:26): pid=8506 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 50.621770][ T27] audit: type=1800 audit(1582358175.606:27): pid=8506 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 '10.128.0.39' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 61.440855][ T8659] iwpm_register_pid: Unable to send a nlmsg (client = 2) [ 61.451116][ T8659] infiniband syz1: RDMA CMA: cma_listen_on_dev, error -98 [ 61.463281][ T8659] netlink: 'syz-executor455': attribute type 1 has an invalid length. [ 61.474498][ T8659] netlink: 21 bytes leftover after parsing attributes in process `syz-executor455'. [ 61.484567][ T8659] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN [ 61.496268][ T8659] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 61.504657][ T8659] CPU: 1 PID: 8659 Comm: syz-executor455 Not tainted 5.6.0-rc2-syzkaller #0 [ 61.513304][ T8659] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.523350][ T8659] RIP: 0010:__list_del_entry_valid+0x23/0x100 [ 61.529574][ T8659] Code: bb fd 0f 0b 0f 1f 00 55 48 89 e5 41 57 41 56 41 54 53 49 89 fe 49 bc 00 00 00 00 00 fc ff df 48 83 c7 08 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 91 7c 0f fe 4d 8b 7e 08 4c 89 f0 48 c1 e8 [ 61.549201][ T8659] RSP: 0018:ffffc90001da76e8 EFLAGS: 00010202 [ 61.555262][ T8659] RAX: 0000000000000001 RBX: ffff8880908fc000 RCX: 0000000000000001 [ 61.563215][ T8659] RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000008 [ 61.571200][ T8659] RBP: ffffc90001da7708 R08: dffffc0000000000 R09: fffff520003b4ed8 [ 61.579151][ T8659] R10: fffff520003b4ed8 R11: 0000000000000000 R12: dffffc0000000000 [ 61.587099][ T8659] R13: 000000000000000f R14: 0000000000000000 R15: 0000000000000000 [ 61.595096][ T8659] FS: 0000000000906880(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 [ 61.604010][ T8659] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.610572][ T8659] CR2: 00000000016a1fd0 CR3: 000000009f094000 CR4: 00000000001406e0 [ 61.618630][ T8659] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 61.626576][ T8659] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 61.634631][ T8659] Call Trace: [ 61.637908][ T8659] smc_ib_remove_dev+0x59/0x230 [ 61.642742][ T8659] ? smc_ib_add_dev+0x4f0/0x4f0 [ 61.647570][ T8659] remove_client_context+0xb9/0x1e0 [ 61.652764][ T8659] disable_device+0xfc/0x300 [ 61.657339][ T8659] __ib_unregister_device+0x70/0x160 [ 61.662655][ T8659] ib_unregister_device_and_put+0xc6/0x100 [ 61.668487][ T8659] nldev_dellink+0x1f1/0x260 [ 61.673111][ T8659] ? nldev_newlink+0x4a0/0x4a0 [ 61.677852][ T8659] rdma_nl_rcv+0x701/0xa20 [ 61.682282][ T8659] netlink_unicast+0x766/0x920 [ 61.687084][ T8659] netlink_sendmsg+0xa2b/0xd40 [ 61.691837][ T8659] ? netlink_getsockopt+0x9f0/0x9f0 [ 61.697717][ T8659] __sys_sendto+0x43c/0x5e0 [ 61.702275][ T8659] ? debug_smp_processor_id+0x1c/0x20 [ 61.707685][ T8659] ? fpregs_assert_state_consistent+0xb6/0xe0 [ 61.713745][ T8659] ? prepare_exit_to_usermode+0x221/0x5b0 [ 61.719442][ T8659] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 61.725196][ T8659] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 61.730634][ T8659] __x64_sys_sendto+0xe5/0x100 [ 61.735381][ T8659] do_syscall_64+0xf7/0x1c0 [ 61.739862][ T8659] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 61.745740][ T8659] RIP: 0033:0x4404d9 [ 61.749657][ T8659] 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 [ 61.769270][ T8659] RSP: 002b:00007fff83a18568 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 61.777710][ T8659] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004404d9 [ 61.785668][ T8659] RDX: 0000000000010a73 RSI: 0000000020000000 RDI: 0000000000000004 [ 61.793662][ T8659] RBP: 00000000006ca018 R08: 0000000000000000 R09: 4b6ae4f95a5de35b [ 61.801613][ T8659] R10: 00000000000008c0 R11: 0000000000000246 R12: 0000000000401d60 [ 61.809630][ T8659] R13: 0000000000401df0 R14: 0000000000000000 R15: 0000000000000000 [ 61.817629][ T8659] Modules linked in: [ 61.821770][ T8659] ---[ end trace 6f8f40581956818e ]--- [ 61.827284][ T8659] RIP: 0010:__list_del_entry_valid+0x23/0x100 [ 61.833372][ T8659] Code: bb fd 0f 0b 0f 1f 00 55 48 89 e5 41 57 41 56 41 54 53 49 89 fe 49 bc 00 00 00 00 00 fc ff df 48 83 c7 08 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 91 7c 0f fe 4d 8b 7e 08 4c 89 f0 48 c1 e8 [ 61.852988][ T8659] RSP: 0018:ffffc90001da76e8 EFLAGS: 00010202 [ 61.859065][ T8659] RAX: 0000000000000001 RBX: ffff8880908fc000 RCX: 0000000000000001 [ 61.867026][ T8659] RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000008 [ 61.875021][ T8659] RBP: ffffc90001da7708 R08: dffffc0000000000 R09: fffff520003b4ed8 [ 61.883002][ T8659] R10: fffff520003b4ed8 R11: 0000000000000000 R12: dffffc0000000000 [ 61.891000][ T8659] R13: 000000000000000f R14: 0000000000000000 R15: 0000000000000000 [ 61.899066][ T8659] FS: 0000000000906880(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 [ 61.907977][ T8659] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.914584][ T8659] CR2: 00000000016a1fd0 CR3: 000000009f094000 CR4: 00000000001406e0 [ 61.922563][ T8659] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 61.930547][ T8659] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 61.938520][ T8659] Kernel panic - not syncing: Fatal exception [ 61.945932][ T8659] Kernel Offset: disabled [ 61.950309][ T8659] Rebooting in 86400 seconds..