[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 68.409954][ T26] audit: type=1800 audit(1582858200.988:25): pid=9591 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 68.430416][ T26] audit: type=1800 audit(1582858200.988:26): pid=9591 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 68.476932][ T26] audit: type=1800 audit(1582858200.998:27): pid=9591 uid=0 auid=4294967295 ses=4294967295 subj==unconfined 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 '10.128.0.122' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 77.588499][ T9746] IPVS: ftp: loaded support on port[0] = 21 [ 77.693159][ T9746] infiniband syz1: set active [ 77.698311][ T9746] infiniband syz1: added syz_tun [ 77.726986][ T9746] general protection fault, probably for non-canonical address 0xdffffc0000000086: 0000 [#1] PREEMPT SMP KASAN [ 77.738712][ T9746] KASAN: null-ptr-deref in range [0x0000000000000430-0x0000000000000437] [ 77.747102][ T9746] CPU: 0 PID: 9746 Comm: syz-executor576 Not tainted 5.6.0-rc3-syzkaller #0 [ 77.755748][ T9746] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.765791][ T9746] RIP: 0010:rds_ib_add_one+0xba/0xcb0 [ 77.771144][ T9746] Code: 03 80 3c 02 00 0f 85 6c 0a 00 00 49 8b 9d a8 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 30 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 7e [ 77.790729][ T9746] RSP: 0018:ffffc90005ea6f28 EFLAGS: 00010202 [ 77.796816][ T9746] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8767eaeb [ 77.804813][ T9746] RDX: 0000000000000086 RSI: ffffffff8767eb09 RDI: 0000000000000430 [ 77.812770][ T9746] RBP: ffffc90005ea6f60 R08: ffff8880a96ec140 R09: ffffed1013f9289c [ 77.820727][ T9746] R10: ffffed1013f9289b R11: ffff88809fc944df R12: ffff88809fc94558 [ 77.828679][ T9746] R13: ffff88809fc94000 R14: ffffffff8a905940 R15: ffffffff8a9059d0 [ 77.836654][ T9746] FS: 00000000010df880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 77.845574][ T9746] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.852169][ T9746] CR2: 00007f54797e7000 CR3: 00000000a68ae000 CR4: 00000000001406f0 [ 77.860128][ T9746] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.868080][ T9746] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.876035][ T9746] Call Trace: [ 77.879313][ T9746] ? rds_ib_remove_one+0x290/0x290 [ 77.884424][ T9746] add_client_context+0x3dd/0x550 [ 77.889613][ T9746] ? ib_device_get_by_netdev+0x530/0x530 [ 77.895230][ T9746] ? rxe_enable_driver+0x68/0x90 [ 77.900156][ T9746] enable_device_and_get+0x1df/0x3c0 [ 77.905455][ T9746] ? add_one_compat_dev+0x7e0/0x7e0 [ 77.910641][ T9746] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 77.916352][ T9746] ib_register_device+0xa89/0xe40 [ 77.921372][ T9746] ? enable_device_and_get+0x3c0/0x3c0 [ 77.926819][ T9746] rxe_register_device+0x52e/0x655 [ 77.931913][ T9746] rxe_add+0x122b/0x1661 [ 77.936144][ T9746] rxe_net_add+0x91/0xf0 [ 77.940370][ T9746] rxe_newlink+0x39/0x90 [ 77.944599][ T9746] nldev_newlink+0x28a/0x430 [ 77.949234][ T9746] ? nldev_set_doit+0x420/0x420 [ 77.954100][ T9746] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 77.959573][ T9746] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 77.965789][ T9746] ? cap_capable+0x205/0x270 [ 77.970358][ T9746] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 77.976580][ T9746] ? ns_capable+0x20/0x30 [ 77.980898][ T9746] ? __netlink_ns_capable+0x104/0x140 [ 77.986262][ T9746] ? nldev_set_doit+0x420/0x420 [ 77.991105][ T9746] rdma_nl_rcv+0x5d9/0x980 [ 77.995545][ T9746] ? rdma_nl_multicast+0x330/0x330 [ 78.000640][ T9746] ? __kasan_check_read+0x11/0x20 [ 78.005652][ T9746] ? netlink_deliver_tap+0x248/0xbf0 [ 78.011013][ T9746] ? __kasan_check_write+0x14/0x20 [ 78.016112][ T9746] netlink_unicast+0x59e/0x7e0 [ 78.020864][ T9746] ? netlink_attachskb+0x870/0x870 [ 78.025959][ T9746] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 78.031669][ T9746] ? __check_object_size+0x3d/0x437 [ 78.036889][ T9746] netlink_sendmsg+0x91c/0xea0 [ 78.041638][ T9746] ? netlink_unicast+0x7e0/0x7e0 [ 78.046558][ T9746] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 78.052088][ T9746] ? apparmor_socket_sendmsg+0x2a/0x30 [ 78.057532][ T9746] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.063755][ T9746] ? security_socket_sendmsg+0x8d/0xc0 [ 78.069198][ T9746] ? netlink_unicast+0x7e0/0x7e0 [ 78.074114][ T9746] sock_sendmsg+0xd7/0x130 [ 78.078519][ T9746] ____sys_sendmsg+0x753/0x880 [ 78.083268][ T9746] ? kernel_sendmsg+0x50/0x50 [ 78.087941][ T9746] ___sys_sendmsg+0x100/0x170 [ 78.092608][ T9746] ? sendmsg_copy_msghdr+0x70/0x70 [ 78.097704][ T9746] ? do_huge_pmd_anonymous_page+0xceb/0x1a50 [ 78.103674][ T9746] ? prep_transhuge_page+0xa0/0xa0 [ 78.108773][ T9746] ? do_page_fault+0x579/0x12e1 [ 78.113616][ T9746] ? find_held_lock+0x35/0x130 [ 78.118366][ T9746] ? do_page_fault+0x579/0x12e1 [ 78.123209][ T9746] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.129436][ T9746] ? __fget_light+0x1ad/0x270 [ 78.134105][ T9746] ? __fdget+0x1b/0x20 [ 78.138162][ T9746] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 78.144406][ T9746] __sys_sendmsg+0x105/0x1d0 [ 78.149940][ T9746] ? __sys_sendmsg_sock+0xc0/0xc0 [ 78.154980][ T9746] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 78.160471][ T9746] ? do_syscall_64+0x26/0x790 [ 78.165127][ T9746] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.171217][ T9746] ? do_syscall_64+0x26/0x790 [ 78.175887][ T9746] __x64_sys_sendmsg+0x78/0xb0 [ 78.180661][ T9746] do_syscall_64+0xfa/0x790 [ 78.185145][ T9746] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.191041][ T9746] RIP: 0033:0x4413c9 [ 78.194936][ T9746] 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 [ 78.214595][ T9746] RSP: 002b:00007fff32026438 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 78.223001][ T9746] RAX: ffffffffffffffda RBX: 00007fff32026450 RCX: 00000000004413c9 [ 78.230952][ T9746] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003 [ 78.238908][ T9746] RBP: 0000000000000003 R08: 00000000bb1414ac R09: 00000000bb1414ac [ 78.246858][ T9746] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 78.254810][ T9746] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 78.262770][ T9746] Modules linked in: [ 78.267123][ T9746] ---[ end trace 1868f43eb96b1f5c ]--- [ 78.272617][ T9746] RIP: 0010:rds_ib_add_one+0xba/0xcb0 [ 78.278064][ T9746] Code: 03 80 3c 02 00 0f 85 6c 0a 00 00 49 8b 9d a8 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 30 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 7e [ 78.297886][ T9746] RSP: 0018:ffffc90005ea6f28 EFLAGS: 00010202 [ 78.303935][ T9746] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8767eaeb [ 78.311923][ T9746] RDX: 0000000000000086 RSI: ffffffff8767eb09 RDI: 0000000000000430 [ 78.319909][ T9746] RBP: ffffc90005ea6f60 R08: ffff8880a96ec140 R09: ffffed1013f9289c [ 78.327888][ T9746] R10: ffffed1013f9289b R11: ffff88809fc944df R12: ffff88809fc94558 [ 78.335848][ T9746] R13: ffff88809fc94000 R14: ffffffff8a905940 R15: ffffffff8a9059d0 [ 78.343894][ T9746] FS: 00000000010df880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 78.352834][ T9746] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.359432][ T9746] CR2: 00007f54797e7000 CR3: 00000000a68ae000 CR4: 00000000001406f0 [ 78.367433][ T9746] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.375419][ T9746] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.383429][ T9746] Kernel panic - not syncing: Fatal exception [ 78.390616][ T9746] Kernel Offset: disabled [ 78.394935][ T9746] Rebooting in 86400 seconds..