[ OK ] Reached target Basic System. Starting Permit User Sessions... [ OK ] Started Regular background program processing daemon. Starting OpenBSD Secure Shell server... Starting getty on tty2-tty6 if dbus and logind are not available... Starting System Logging Service... [ OK ] Started Permit User Sessions. [ OK ] Started System Logging Service. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ 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... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.180' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 65.915886][ T28] audit: type=1400 audit(1590368567.233:8): avc: denied { execmem } for pid=7043 comm="syz-executor896" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 65.920706][ T7043] dummy0 speed is unknown, defaulting to 1000 [ 65.946418][ T7043] dummy0 speed is unknown, defaulting to 1000 [ 65.954276][ T7043] dummy0 speed is unknown, defaulting to 1000 [ 66.047718][ T7043] infiniband syz0: set down [ 66.053051][ T2709] dummy0 speed is unknown, defaulting to 1000 [ 66.059838][ T7043] infiniband syz0: added dummy0 [ 66.099560][ T7043] general protection fault, probably for non-canonical address 0xdffffc000000008e: 0000 [#1] PREEMPT SMP KASAN [ 66.111308][ T7043] KASAN: null-ptr-deref in range [0x0000000000000470-0x0000000000000477] [ 66.119813][ T7043] CPU: 1 PID: 7043 Comm: syz-executor896 Not tainted 5.7.0-rc6-syzkaller #0 [ 66.128482][ T7043] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.138821][ T7043] RIP: 0010:rds_ib_add_one+0xbb/0xc90 [ 66.144197][ T7043] Code: 80 3c 02 00 0f 85 45 0a 00 00 49 8b 9c 24 f0 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 70 04 00 00 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 5a [ 66.165176][ T7043] RSP: 0018:ffffc90001616fe0 EFLAGS: 00010206 [ 66.171572][ T7043] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff87505d9a [ 66.180835][ T7043] RDX: 000000000000008e RSI: ffffffff87505db8 RDI: 0000000000000470 [ 66.188802][ T7043] RBP: 0000000000000001 R08: ffff8880a29605c0 R09: ffffed1011e5989f [ 66.196768][ T7043] R10: ffff88808f2cc4f7 R11: ffffed1011e5989e R12: ffff88808f2cc000 [ 66.204811][ T7043] R13: ffffffff8a745600 R14: 1ffff920002c2e07 R15: ffff88808f2cc4e8 [ 66.212788][ T7043] FS: 0000000001f08880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 66.222473][ T7043] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.229127][ T7043] CR2: 00007fff3bb12c00 CR3: 000000009db86000 CR4: 00000000001406e0 [ 66.237101][ T7043] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.247174][ T7043] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.255148][ T7043] Call Trace: [ 66.258433][ T7043] ? rds_ib_remove_one+0x280/0x280 [ 66.263742][ T7043] add_client_context+0x3b4/0x520 [ 66.269733][ T7043] ? ib_device_get_by_netdev+0x4f0/0x4f0 [ 66.276367][ T7043] ? rxe_enable_driver+0x63/0x90 [ 66.281305][ T7043] enable_device_and_get+0x1cd/0x3b0 [ 66.286718][ T7043] ? add_one_compat_dev+0x800/0x800 [ 66.292007][ T7043] ? rxe_ib_alloc_hw_stats+0xf9/0x130 [ 66.297398][ T7043] ib_register_device+0xa12/0xda0 [ 66.302410][ T7043] ? enable_device_and_get+0x3b0/0x3b0 [ 66.307856][ T7043] ? crypto_create_tfm+0x118/0x2f0 [ 66.313077][ T7043] ? crypto_alloc_tfm+0x124/0x340 [ 66.318210][ T7043] ? ib_device_set_netdev+0x499/0x680 [ 66.323727][ T7043] rxe_register_device+0x4fa/0x621 [ 66.328838][ T7043] rxe_add+0x1353/0x17df [ 66.333092][ T7043] rxe_net_add+0x8c/0xe0 [ 66.337332][ T7043] rxe_newlink+0x34/0x90 [ 66.341555][ T7043] nldev_newlink+0x29e/0x420 [ 66.346128][ T7043] ? nldev_set_doit+0x410/0x410 [ 66.350978][ T7043] ? selinux_sb_eat_lsm_opts+0x6d0/0x6d0 [ 66.356606][ T7043] ? selinux_sb_eat_lsm_opts+0x6d0/0x6d0 [ 66.362221][ T7043] ? cap_capable+0x1eb/0x250 [ 66.367062][ T7043] ? ns_capable_common+0xe2/0x100 [ 66.372075][ T7043] ? nldev_set_doit+0x410/0x410 [ 66.379508][ T7043] rdma_nl_rcv+0x586/0x900 [ 66.383924][ T7043] ? rdma_nl_multicast+0x310/0x310 [ 66.389110][ T7043] ? netlink_deliver_tap+0x227/0xb50 [ 66.394376][ T7043] netlink_unicast+0x537/0x740 [ 66.399202][ T7043] ? netlink_attachskb+0x810/0x810 [ 66.404297][ T7043] ? _copy_from_iter_full+0x25c/0x870 [ 66.409739][ T7043] netlink_sendmsg+0x882/0xe10 [ 66.414491][ T7043] ? netlink_unicast+0x740/0x740 [ 66.419420][ T7043] ? netlink_unicast+0x740/0x740 [ 66.424433][ T7043] sock_sendmsg+0xcf/0x120 [ 66.428931][ T7043] ____sys_sendmsg+0x6bf/0x7e0 [ 66.433673][ T7043] ? kernel_sendmsg+0x50/0x50 [ 66.438363][ T7043] ? lock_downgrade+0x840/0x840 [ 66.443236][ T7043] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 66.448762][ T7043] ___sys_sendmsg+0x100/0x170 [ 66.453525][ T7043] ? sendmsg_copy_msghdr+0x70/0x70 [ 66.459133][ T7043] ? mark_held_locks+0xe0/0xe0 [ 66.463877][ T7043] ? prep_transhuge_page+0xa0/0xa0 [ 66.468973][ T7043] ? pud_val+0x7c/0xf0 [ 66.473036][ T7043] ? pmd_val+0xf0/0xf0 [ 66.477203][ T7043] ? percpu_counter_add_batch+0x123/0x180 [ 66.483247][ T7043] ? find_held_lock+0x2d/0x110 [ 66.487994][ T7043] ? do_page_fault+0x59e/0x13da [ 66.493167][ T7043] ? vm_insert_pages+0x6a0/0x6a0 [ 66.498256][ T7043] ? lock_downgrade+0x840/0x840 [ 66.503086][ T7043] ? __fget_light+0x1ab/0x270 [ 66.507742][ T7043] __sys_sendmsg+0xec/0x1b0 [ 66.512239][ T7043] ? __sys_sendmsg_sock+0xb0/0xb0 [ 66.517346][ T7043] ? down_read_nested+0x420/0x420 [ 66.522346][ T7043] ? trace_hardirqs_off_caller+0x55/0x230 [ 66.528671][ T7043] ? do_syscall_64+0x21/0x7d0 [ 66.533344][ T7043] do_syscall_64+0xf6/0x7d0 [ 66.537823][ T7043] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 66.543701][ T7043] RIP: 0033:0x440349 [ 66.547660][ T7043] 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 [ 66.567417][ T7043] RSP: 002b:00007ffe08f62388 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 66.575805][ T7043] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440349 [ 66.583762][ T7043] RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000003 [ 66.591730][ T7043] RBP: 00000000006ca018 R08: 0000000000000014 R09: 00000000004002c8 [ 66.599772][ T7043] R10: 0000000000000041 R11: 0000000000000246 R12: 0000000000401bd0 [ 66.607742][ T7043] R13: 0000000000401c60 R14: 0000000000000000 R15: 0000000000000000 [ 66.615710][ T7043] Modules linked in: [ 66.620286][ T7043] ---[ end trace 2ab34b6535287c59 ]--- [ 66.627149][ T7043] RIP: 0010:rds_ib_add_one+0xbb/0xc90 [ 66.632602][ T7043] Code: 80 3c 02 00 0f 85 45 0a 00 00 49 8b 9c 24 f0 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 70 04 00 00 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 5a [ 66.652720][ T7043] RSP: 0018:ffffc90001616fe0 EFLAGS: 00010206 [ 66.658780][ T7043] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff87505d9a [ 66.667147][ T7043] RDX: 000000000000008e RSI: ffffffff87505db8 RDI: 0000000000000470 [ 66.676732][ T7043] RBP: 0000000000000001 R08: ffff8880a29605c0 R09: ffffed1011e5989f [ 66.684829][ T7043] R10: ffff88808f2cc4f7 R11: ffffed1011e5989e R12: ffff88808f2cc000 [ 66.692864][ T7043] R13: ffffffff8a745600 R14: 1ffff920002c2e07 R15: ffff88808f2cc4e8 [ 66.701703][ T7043] FS: 0000000001f08880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 66.710952][ T7043] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.717721][ T7043] CR2: 00007fff3bb12c00 CR3: 000000009db86000 CR4: 00000000001406e0 [ 66.725746][ T7043] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.733765][ T7043] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.741722][ T7043] Kernel panic - not syncing: Fatal exception [ 66.748515][ T7043] Kernel Offset: disabled [ 66.752859][ T7043] Rebooting in 86400 seconds..