[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 70.189471][ T27] audit: type=1800 audit(1583638308.891:25): pid=9393 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 70.231213][ T27] audit: type=1800 audit(1583638308.901:26): pid=9393 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 70.289066][ T27] audit: type=1800 audit(1583638308.901:27): pid=9393 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 '10.128.15.200' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 98.643175][ T9550] IPVS: ftp: loaded support on port[0] = 21 [ 98.770377][ T9550] infiniband syz1: set active [ 98.775611][ T9550] infiniband syz1: added syz_tun [ 98.805335][ T9550] general protection fault, probably for non-canonical address 0xdffffc0000000086: 0000 [#1] PREEMPT SMP KASAN [ 98.817212][ T9550] KASAN: null-ptr-deref in range [0x0000000000000430-0x0000000000000437] [ 98.825652][ T9550] CPU: 0 PID: 9550 Comm: syz-executor715 Not tainted 5.6.0-rc3-next-20200228-syzkaller #0 [ 98.835862][ T9550] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 98.845907][ T9550] RIP: 0010:rds_ib_add_one+0xbb/0xc80 [ 98.851269][ T9550] Code: 80 3c 02 00 0f 85 3a 0a 00 00 49 8b 9c 24 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 4f [ 98.870861][ T9550] RSP: 0018:ffffc900020a6fe0 EFLAGS: 00010202 [ 98.876912][ T9550] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff873e8c5a [ 98.884914][ T9550] RDX: 0000000000000086 RSI: ffffffff873e8c78 RDI: 0000000000000430 [ 98.892869][ T9550] RBP: 0000000000000001 R08: ffff8880a67105c0 R09: ffffed1014e8309c [ 98.900820][ T9550] R10: ffffed1014e8309b R11: ffff8880a74184df R12: ffff8880a7418000 [ 98.908771][ T9550] R13: ffff8880a7418558 R14: ffff8880a74184d0 R15: ffffffff873e8c00 [ 98.916742][ T9550] FS: 0000000002636880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 98.925656][ T9550] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 98.932536][ T9550] CR2: 00007fca7ef0e000 CR3: 000000009808d000 CR4: 00000000001406f0 [ 98.940511][ T9550] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 98.948459][ T9550] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 98.956410][ T9550] Call Trace: [ 98.959703][ T9550] ? rds_ib_remove_one+0x280/0x280 [ 98.964796][ T9550] add_client_context+0x400/0x560 [ 98.969806][ T9550] ? ib_device_get_by_netdev+0x510/0x510 [ 98.975439][ T9550] ? rxe_enable_driver+0x63/0x90 [ 98.980365][ T9550] enable_device_and_get+0x1cd/0x3b0 [ 98.985643][ T9550] ? add_one_compat_dev+0x7e0/0x7e0 [ 98.990831][ T9550] ? rxe_ib_alloc_hw_stats+0xf9/0x130 [ 98.996192][ T9550] ib_register_device+0xa12/0xda0 [ 99.001217][ T9550] ? enable_device_and_get+0x3b0/0x3b0 [ 99.006673][ T9550] ? crypto_create_tfm+0x118/0x2f0 [ 99.011769][ T9550] ? crypto_alloc_tfm+0x124/0x340 [ 99.016774][ T9550] ? ib_device_set_netdev+0x499/0x680 [ 99.022128][ T9550] rxe_register_device+0x4fa/0x621 [ 99.027220][ T9550] rxe_add+0x1227/0x1664 [ 99.031457][ T9550] rxe_net_add+0x8c/0xe0 [ 99.035688][ T9550] rxe_newlink+0x34/0x90 [ 99.039918][ T9550] nldev_newlink+0x27f/0x400 [ 99.044685][ T9550] ? nldev_set_doit+0x3e0/0x3e0 [ 99.049538][ T9550] ? apparmor_capable+0x49c/0x8a0 [ 99.054539][ T9550] ? apparmor_capable+0x49c/0x8a0 [ 99.059539][ T9550] ? apparmor_cred_prepare+0x760/0x760 [ 99.064980][ T9550] ? apparmor_cred_prepare+0x760/0x760 [ 99.070418][ T9550] ? cap_capable+0x1eb/0x250 [ 99.074986][ T9550] ? ns_capable_common+0xe2/0x100 [ 99.080959][ T9550] ? nldev_set_doit+0x3e0/0x3e0 [ 99.085783][ T9550] rdma_nl_rcv+0x586/0x900 [ 99.090266][ T9550] ? rdma_nl_multicast+0x310/0x310 [ 99.095395][ T9550] ? netlink_deliver_tap+0x227/0xb50 [ 99.100687][ T9550] netlink_unicast+0x537/0x740 [ 99.105444][ T9550] ? netlink_attachskb+0x810/0x810 [ 99.110554][ T9550] ? _copy_from_iter_full+0x25c/0x870 [ 99.115905][ T9550] ? __phys_addr_symbol+0x2c/0x70 [ 99.120908][ T9550] ? __check_object_size+0x171/0x437 [ 99.126173][ T9550] netlink_sendmsg+0x882/0xe10 [ 99.131096][ T9550] ? aa_af_perm+0x260/0x260 [ 99.135621][ T9550] ? netlink_unicast+0x740/0x740 [ 99.140540][ T9550] ? netlink_unicast+0x740/0x740 [ 99.145471][ T9550] sock_sendmsg+0xcf/0x120 [ 99.149865][ T9550] ____sys_sendmsg+0x6b9/0x7d0 [ 99.154608][ T9550] ? kernel_sendmsg+0x50/0x50 [ 99.159262][ T9550] ? mark_lock+0xbc/0x1220 [ 99.163656][ T9550] ___sys_sendmsg+0x100/0x170 [ 99.168307][ T9550] ? lockdep_hardirqs_on+0x417/0x5d0 [ 99.173565][ T9550] ? sendmsg_copy_msghdr+0x70/0x70 [ 99.178654][ T9550] ? prep_transhuge_page+0xa0/0xa0 [ 99.183741][ T9550] ? pud_val+0x7c/0xf0 [ 99.187785][ T9550] ? pmd_val+0xf0/0xf0 [ 99.191843][ T9550] ? __lock_acquire+0x827/0x5270 [ 99.196768][ T9550] ? find_held_lock+0x2d/0x110 [ 99.201528][ T9550] ? do_page_fault+0x58b/0x12da [ 99.206364][ T9550] ? vm_insert_pages+0x6a0/0x6a0 [ 99.211301][ T9550] ? lock_downgrade+0x7f0/0x7f0 [ 99.216129][ T9550] ? __fget_light+0x1a5/0x270 [ 99.220786][ T9550] __sys_sendmsg+0xec/0x1b0 [ 99.225265][ T9550] ? __sys_sendmsg_sock+0xb0/0xb0 [ 99.230294][ T9550] ? trace_hardirqs_off_caller+0x55/0x230 [ 99.236698][ T9550] ? do_syscall_64+0x21/0x790 [ 99.241647][ T9550] do_syscall_64+0xf6/0x790 [ 99.246309][ T9550] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 99.252193][ T9550] RIP: 0033:0x4413c9 [ 99.256084][ T9550] 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 [ 99.276598][ T9550] RSP: 002b:00007ffda697c598 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 99.285144][ T9550] RAX: ffffffffffffffda RBX: 00007ffda697c5b0 RCX: 00000000004413c9 [ 99.293355][ T9550] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003 [ 99.301342][ T9550] RBP: 0000000000000003 R08: 00000000bb1414ac R09: 00000000bb1414ac [ 99.309768][ T9550] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 99.318308][ T9550] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 99.326392][ T9550] Modules linked in: [ 99.331368][ T9550] ---[ end trace e540fc93eed247f5 ]--- [ 99.337227][ T9550] RIP: 0010:rds_ib_add_one+0xbb/0xc80 [ 99.343066][ T9550] Code: 80 3c 02 00 0f 85 3a 0a 00 00 49 8b 9c 24 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 4f [ 99.363670][ T9550] RSP: 0018:ffffc900020a6fe0 EFLAGS: 00010202 [ 99.369872][ T9550] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff873e8c5a [ 99.378365][ T9550] RDX: 0000000000000086 RSI: ffffffff873e8c78 RDI: 0000000000000430 [ 99.387263][ T9550] RBP: 0000000000000001 R08: ffff8880a67105c0 R09: ffffed1014e8309c [ 99.395281][ T9550] R10: ffffed1014e8309b R11: ffff8880a74184df R12: ffff8880a7418000 [ 99.403573][ T9550] R13: ffff8880a7418558 R14: ffff8880a74184d0 R15: ffffffff873e8c00 [ 99.411690][ T9550] FS: 0000000002636880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 99.420628][ T9550] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 99.427268][ T9550] CR2: 00007fca7ef0e000 CR3: 000000009808d000 CR4: 00000000001406f0 [ 99.435635][ T9550] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 99.443658][ T9550] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 99.451677][ T9550] Kernel panic - not syncing: Fatal exception [ 99.458474][ T9550] Kernel Offset: disabled [ 99.462833][ T9550] Rebooting in 86400 seconds..