[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 63.484756][ T26] audit: type=1800 audit(1558392893.465:25): pid=8785 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 63.510655][ T26] audit: type=1800 audit(1558392893.475:26): pid=8785 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 63.539201][ T26] audit: type=1800 audit(1558392893.475:27): pid=8785 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 '10.128.0.100' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 73.968540][ T8939] INFO: trying to register non-static key. [ 73.974404][ T8939] the code is fine but needs lockdep annotation. [ 73.980824][ T8939] turning off the locking correctness validator. [ 73.987153][ T8939] CPU: 1 PID: 8939 Comm: syz-executor164 Not tainted 5.2.0-rc1+ #1 [ 73.995016][ T8939] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.005063][ T8939] Call Trace: [ 74.008375][ T8939] dump_stack+0x172/0x1f0 [ 74.012718][ T8939] register_lock_class+0x167e/0x1860 [ 74.017989][ T8939] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 74.023795][ T8939] ? stack_depot_save+0x25a/0x450 [ 74.028807][ T8939] ? is_dynamic_key+0x1c0/0x1c0 [ 74.033731][ T8939] ? save_stack+0x5c/0x90 [ 74.038037][ T8939] ? save_stack+0x23/0x90 [ 74.042344][ T8939] ? __kasan_kmalloc.constprop.0+0xcf/0xe0 [ 74.048151][ T8939] __lock_acquire+0x116/0x5490 [ 74.052936][ T8939] ? sock_diag_rcv+0x2b/0x40 [ 74.057527][ T8939] ? netlink_unicast+0x531/0x710 [ 74.062441][ T8939] ? netlink_sendmsg+0x8ae/0xd70 [ 74.067359][ T8939] ? sock_sendmsg+0xd7/0x130 [ 74.072098][ T8939] ? ___sys_sendmsg+0x803/0x920 [ 74.077011][ T8939] ? __sys_sendmsg+0x105/0x1d0 [ 74.081760][ T8939] ? __ia32_compat_sys_sendmsg+0x7a/0xb0 [ 74.087392][ T8939] ? do_fast_syscall_32+0x27b/0xd7d [ 74.092568][ T8939] ? entry_SYSENTER_compat+0x70/0x7f [ 74.097830][ T8939] ? mark_held_locks+0xf0/0xf0 [ 74.102589][ T8939] ? mark_held_locks+0xf0/0xf0 [ 74.107350][ T8939] ? fs_reclaim_acquire.part.0+0x30/0x30 [ 74.112962][ T8939] ? find_held_lock+0x35/0x130 [ 74.117701][ T8939] ? fs_reclaim_acquire.part.0+0x30/0x30 [ 74.123314][ T8939] lock_acquire+0x16f/0x3f0 [ 74.127810][ T8939] ? rhashtable_walk_enter+0xf9/0x390 [ 74.133164][ T8939] _raw_spin_lock+0x2f/0x40 [ 74.137769][ T8939] ? rhashtable_walk_enter+0xf9/0x390 [ 74.143134][ T8939] rhashtable_walk_enter+0xf9/0x390 [ 74.148322][ T8939] __tipc_dump_start+0x1fa/0x3c0 [ 74.153240][ T8939] tipc_dump_start+0x70/0x90 [ 74.157825][ T8939] __netlink_dump_start+0x4f8/0x7d0 [ 74.163005][ T8939] ? __tipc_dump_start+0x3c0/0x3c0 [ 74.168094][ T8939] tipc_sock_diag_handler_dump+0x1d9/0x270 [ 74.173894][ T8939] ? __tipc_diag_gen_cookie+0x90/0x90 [ 74.179246][ T8939] ? sock_diag_rcv+0x1c/0x40 [ 74.183814][ T8939] ? __tipc_dump_start+0x3c0/0x3c0 [ 74.188907][ T8939] ? tipc_unregister_sysctl+0x20/0x20 [ 74.194258][ T8939] ? tipc_ioctl+0x2e0/0x2e0 [ 74.198751][ T8939] sock_diag_rcv_msg+0x319/0x410 [ 74.203780][ T8939] netlink_rcv_skb+0x177/0x450 [ 74.208560][ T8939] ? sock_diag_bind+0x80/0x80 [ 74.213223][ T8939] ? netlink_ack+0xb50/0xb50 [ 74.217804][ T8939] ? kasan_check_read+0x11/0x20 [ 74.222639][ T8939] ? netlink_deliver_tap+0x254/0xbf0 [ 74.227912][ T8939] sock_diag_rcv+0x2b/0x40 [ 74.232306][ T8939] netlink_unicast+0x531/0x710 [ 74.237054][ T8939] ? netlink_attachskb+0x770/0x770 [ 74.242239][ T8939] ? _copy_from_iter_full+0x25d/0x8c0 [ 74.247605][ T8939] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 74.260648][ T8939] ? __check_object_size+0x3d/0x42f [ 74.265831][ T8939] netlink_sendmsg+0x8ae/0xd70 [ 74.270587][ T8939] ? netlink_unicast+0x710/0x710 [ 74.275528][ T8939] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 74.281061][ T8939] ? apparmor_socket_sendmsg+0x2a/0x30 [ 74.286765][ T8939] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 74.293028][ T8939] ? security_socket_sendmsg+0x8d/0xc0 [ 74.298470][ T8939] ? netlink_unicast+0x710/0x710 [ 74.303390][ T8939] sock_sendmsg+0xd7/0x130 [ 74.307788][ T8939] ___sys_sendmsg+0x803/0x920 [ 74.312485][ T8939] ? copy_msghdr_from_user+0x430/0x430 [ 74.318042][ T8939] ? trace_hardirqs_on+0x67/0x220 [ 74.323098][ T8939] ? do_huge_pmd_anonymous_page+0x420/0x1660 [ 74.329057][ T8939] ? prep_transhuge_page+0xa0/0xa0 [ 74.334238][ T8939] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 74.340472][ T8939] ? __handle_mm_fault+0x7cb/0x3eb0 [ 74.345655][ T8939] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 74.351905][ T8939] ? __fget_light+0x1a9/0x230 [ 74.356591][ T8939] ? __fdget+0x1b/0x20 [ 74.360652][ T8939] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 74.366892][ T8939] __sys_sendmsg+0x105/0x1d0 [ 74.371549][ T8939] ? __ia32_sys_shutdown+0x80/0x80 [ 74.376645][ T8939] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 74.382089][ T8939] ? do_fast_syscall_32+0xd1/0xd7d [ 74.387181][ T8939] ? entry_SYSENTER_compat+0x70/0x7f [ 74.392445][ T8939] ? do_fast_syscall_32+0xd1/0xd7d [ 74.397542][ T8939] __ia32_compat_sys_sendmsg+0x7a/0xb0 [ 74.403083][ T8939] do_fast_syscall_32+0x27b/0xd7d [ 74.408091][ T8939] entry_SYSENTER_compat+0x70/0x7f [ 74.413209][ T8939] RIP: 0023:0xf7f2e849 [ 74.417256][ T8939] Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 74.436946][ T8939] RSP: 002b:00000000ffdfb03c EFLAGS: 00000246 ORIG_RAX: 0000000000000172 [ 74.445350][ T8939] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000040 [ 74.453308][ T8939] RDX: 0000000000000000 RSI: 00000000080ea078 RDI: 00000000ffdfb090 [ 74.461264][ T8939] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 74.469218][ T8939] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 74.477170][ T8939] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 74.485291][ T8939] kasan: CONFIG_KASAN_INLINE enabled [ 74.490595][ T8939] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 74.498729][ T8939] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 74.505697][ T8939] CPU: 1 PID: 8939 Comm: syz-executor164 Not tainted 5.2.0-rc1+ #1 [ 74.513774][ T8939] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.523959][ T8939] RIP: 0010:rhashtable_walk_enter+0x18f/0x390 [ 74.530015][ T8939] Code: c1 ea 03 80 3c 02 00 0f 85 ac 01 00 00 4d 8d 7e 10 4c 89 73 28 48 b8 00 00 00 00 00 fc ff df 48 8d 4b 18 4c 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 70 01 00 00 49 8b 56 10 48 89 cf 4c 89 fe 48 89 [ 74.549604][ T8939] RSP: 0018:ffff888089a17620 EFLAGS: 00010202 [ 74.557767][ T8939] RAX: dffffc0000000000 RBX: ffff8880991f0f80 RCX: ffff8880991f0f98 [ 74.565734][ T8939] RDX: 0000000000000002 RSI: ffffffff833391e4 RDI: ffff8880991f0fa8 [ 74.573903][ T8939] RBP: ffff888089a17658 R08: ffff888096072480 R09: ffffed1011342eb2 [ 74.581862][ T8939] R10: ffffed1011342eb1 R11: 0000000000000003 R12: ffff88809b30dc28 [ 74.589908][ T8939] R13: ffff88809b30dd28 R14: 0000000000000000 R15: 0000000000000010 [ 74.598325][ T8939] FS: 0000000000000000(0000) GS:ffff8880ae900000(0063) knlGS:0000000057838840 [ 74.616990][ T8939] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 74.623558][ T8939] CR2: 0000000020000040 CR3: 000000009a614000 CR4: 00000000001406e0 [ 74.631530][ T8939] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.639487][ T8939] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.647442][ T8939] Call Trace: [ 74.650747][ T8939] __tipc_dump_start+0x1fa/0x3c0 [ 74.655668][ T8939] tipc_dump_start+0x70/0x90 [ 74.660238][ T8939] __netlink_dump_start+0x4f8/0x7d0 [ 74.665413][ T8939] ? __tipc_dump_start+0x3c0/0x3c0 [ 74.670544][ T8939] tipc_sock_diag_handler_dump+0x1d9/0x270 [ 74.676334][ T8939] ? __tipc_diag_gen_cookie+0x90/0x90 [ 74.681690][ T8939] ? sock_diag_rcv+0x1c/0x40 [ 74.686262][ T8939] ? __tipc_dump_start+0x3c0/0x3c0 [ 74.691373][ T8939] ? tipc_unregister_sysctl+0x20/0x20 [ 74.696750][ T8939] ? tipc_ioctl+0x2e0/0x2e0 [ 74.701244][ T8939] sock_diag_rcv_msg+0x319/0x410 [ 74.706527][ T8939] netlink_rcv_skb+0x177/0x450 [ 74.711279][ T8939] ? sock_diag_bind+0x80/0x80 [ 74.715964][ T8939] ? netlink_ack+0xb50/0xb50 [ 74.720545][ T8939] ? kasan_check_read+0x11/0x20 [ 74.725377][ T8939] ? netlink_deliver_tap+0x254/0xbf0 [ 74.730644][ T8939] sock_diag_rcv+0x2b/0x40 [ 74.735041][ T8939] netlink_unicast+0x531/0x710 [ 74.739790][ T8939] ? netlink_attachskb+0x770/0x770 [ 74.744902][ T8939] ? _copy_from_iter_full+0x25d/0x8c0 [ 74.750253][ T8939] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 74.755972][ T8939] ? __check_object_size+0x3d/0x42f [ 74.761168][ T8939] netlink_sendmsg+0x8ae/0xd70 [ 74.765913][ T8939] ? netlink_unicast+0x710/0x710 [ 74.770831][ T8939] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 74.776352][ T8939] ? apparmor_socket_sendmsg+0x2a/0x30 [ 74.781793][ T8939] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 74.788016][ T8939] ? security_socket_sendmsg+0x8d/0xc0 [ 74.793573][ T8939] ? netlink_unicast+0x710/0x710 [ 74.798497][ T8939] sock_sendmsg+0xd7/0x130 [ 74.802902][ T8939] ___sys_sendmsg+0x803/0x920 [ 74.807560][ T8939] ? copy_msghdr_from_user+0x430/0x430 [ 74.813260][ T8939] ? trace_hardirqs_on+0x67/0x220 [ 74.818291][ T8939] ? do_huge_pmd_anonymous_page+0x420/0x1660 [ 74.824253][ T8939] ? prep_transhuge_page+0xa0/0xa0 [ 74.829351][ T8939] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 74.835572][ T8939] ? __handle_mm_fault+0x7cb/0x3eb0 [ 74.840753][ T8939] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 74.846974][ T8939] ? __fget_light+0x1a9/0x230 [ 74.851737][ T8939] ? __fdget+0x1b/0x20 [ 74.855788][ T8939] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 74.862097][ T8939] __sys_sendmsg+0x105/0x1d0 [ 74.866667][ T8939] ? __ia32_sys_shutdown+0x80/0x80 [ 74.871763][ T8939] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 74.877203][ T8939] ? do_fast_syscall_32+0xd1/0xd7d [ 74.882299][ T8939] ? entry_SYSENTER_compat+0x70/0x7f [ 74.889972][ T8939] ? do_fast_syscall_32+0xd1/0xd7d [ 74.895076][ T8939] __ia32_compat_sys_sendmsg+0x7a/0xb0 [ 74.900553][ T8939] do_fast_syscall_32+0x27b/0xd7d [ 74.905571][ T8939] entry_SYSENTER_compat+0x70/0x7f [ 74.910705][ T8939] RIP: 0023:0xf7f2e849 [ 74.914756][ T8939] Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 74.934435][ T8939] RSP: 002b:00000000ffdfb03c EFLAGS: 00000246 ORIG_RAX: 0000000000000172 [ 74.942853][ T8939] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000040 [ 74.950840][ T8939] RDX: 0000000000000000 RSI: 00000000080ea078 RDI: 00000000ffdfb090 [ 74.958805][ T8939] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 74.966756][ T8939] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 74.974716][ T8939] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 74.982670][ T8939] Modules linked in: [ 74.986641][ T8939] ---[ end trace df764217ca13e9ce ]--- [ 74.992135][ T8939] RIP: 0010:rhashtable_walk_enter+0x18f/0x390 [ 74.998209][ T8939] Code: c1 ea 03 80 3c 02 00 0f 85 ac 01 00 00 4d 8d 7e 10 4c 89 73 28 48 b8 00 00 00 00 00 fc ff df 48 8d 4b 18 4c 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 70 01 00 00 49 8b 56 10 48 89 cf 4c 89 fe 48 89 [ 75.017854][ T8939] RSP: 0018:ffff888089a17620 EFLAGS: 00010202 [ 75.023948][ T8939] RAX: dffffc0000000000 RBX: ffff8880991f0f80 RCX: ffff8880991f0f98 [ 75.031948][ T8939] RDX: 0000000000000002 RSI: ffffffff833391e4 RDI: ffff8880991f0fa8 [ 75.039956][ T8939] RBP: ffff888089a17658 R08: ffff888096072480 R09: ffffed1011342eb2 [ 75.047920][ T8939] R10: ffffed1011342eb1 R11: 0000000000000003 R12: ffff88809b30dc28 [ 75.055915][ T8939] R13: ffff88809b30dd28 R14: 0000000000000000 R15: 0000000000000010 [ 75.063905][ T8939] FS: 0000000000000000(0000) GS:ffff8880ae900000(0063) knlGS:0000000057838840 [ 75.072852][ T8939] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 75.079449][ T8939] CR2: 0000000020000040 CR3: 000000009a614000 CR4: 00000000001406e0 [ 75.087416][ T8939] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.095533][ T8939] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.103534][ T8939] Kernel panic - not syncing: Fatal exception [ 75.110755][ T8939] Kernel Offset: disabled [ 75.115085][ T8939] Rebooting in 86400 seconds..