[ 66.777464][ T26] audit: type=1800 audit(1565587405.081:27): pid=9816 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 66.799462][ T26] audit: type=1800 audit(1565587405.091:28): pid=9816 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 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. [ 67.462334][ T26] audit: type=1800 audit(1565587405.881:29): pid=9816 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 67.483762][ T26] audit: type=1800 audit(1565587405.881:30): pid=9816 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.9' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 76.516866][ T9965] ================================================================== [ 76.525273][ T9965] BUG: KASAN: null-ptr-deref in rxrpc_unuse_local+0x23/0x70 [ 76.532580][ T9965] Write of size 4 at addr 0000000000000010 by task syz-executor082/9965 [ 76.540881][ T9965] [ 76.543223][ T9965] CPU: 0 PID: 9965 Comm: syz-executor082 Not tainted 5.3.0-rc3+ #158 [ 76.551261][ T9965] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.561297][ T9965] Call Trace: [ 76.564769][ T9965] dump_stack+0x172/0x1f0 [ 76.569081][ T9965] ? rxrpc_unuse_local+0x23/0x70 [ 76.573998][ T9965] ? rxrpc_unuse_local+0x23/0x70 [ 76.578912][ T9965] __kasan_report.cold+0x5/0x36 [ 76.584117][ T9965] ? _raw_read_unlock_irqrestore+0xc1/0xe0 [ 76.589898][ T9965] ? rxrpc_unuse_local+0x23/0x70 [ 76.594811][ T9965] kasan_report+0x12/0x17 [ 76.599115][ T9965] check_memory_region+0x134/0x1a0 [ 76.604201][ T9965] __kasan_check_write+0x14/0x20 [ 76.609122][ T9965] rxrpc_unuse_local+0x23/0x70 [ 76.613868][ T9965] rxrpc_release+0x47d/0x840 [ 76.618435][ T9965] __sock_release+0xce/0x280 [ 76.623002][ T9965] sock_close+0x1e/0x30 [ 76.627143][ T9965] __fput+0x2ff/0x890 [ 76.631103][ T9965] ? __sock_release+0x280/0x280 [ 76.635928][ T9965] ____fput+0x16/0x20 [ 76.639886][ T9965] task_work_run+0x145/0x1c0 [ 76.644455][ T9965] do_exit+0x92f/0x2e50 [ 76.648603][ T9965] ? __sanitizer_cov_trace_const_cmp4+0x11/0x20 [ 76.655112][ T9965] ? mm_update_next_owner+0x640/0x640 [ 76.660463][ T9965] ? fd_install+0x4d/0x60 [ 76.664770][ T9965] ? __sys_socket+0x180/0x220 [ 76.669424][ T9965] ? move_addr_to_kernel+0x80/0x80 [ 76.674589][ T9965] ? __ia32_sys_fallocate+0xf0/0xf0 [ 76.679980][ T9965] do_group_exit+0x135/0x360 [ 76.684555][ T9965] __x64_sys_exit_group+0x44/0x50 [ 76.689888][ T9965] do_syscall_64+0xfd/0x6a0 [ 76.694372][ T9965] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 76.700242][ T9965] RIP: 0033:0x43ed68 [ 76.704132][ T9965] Code: Bad RIP value. [ 76.708171][ T9965] RSP: 002b:00007ffc89cf4ed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 76.716556][ T9965] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 76.731095][ T9965] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 76.739049][ T9965] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 76.746999][ T9965] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 76.754949][ T9965] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 76.762936][ T9965] ================================================================== [ 76.772109][ T9965] Kernel panic - not syncing: panic_on_warn set ... [ 76.778709][ T9965] CPU: 0 PID: 9965 Comm: syz-executor082 Tainted: G B 5.3.0-rc3+ #158 [ 76.788163][ T9965] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.798564][ T9965] Call Trace: [ 76.801864][ T9965] dump_stack+0x172/0x1f0 [ 76.806262][ T9965] panic+0x2dc/0x755 [ 76.810132][ T9965] ? add_taint.cold+0x16/0x16 [ 76.814787][ T9965] ? rxrpc_unuse_local+0x23/0x70 [ 76.819704][ T9965] ? preempt_schedule+0x4b/0x60 [ 76.824532][ T9965] ? ___preempt_schedule+0x16/0x20 [ 76.829639][ T9965] ? trace_hardirqs_on+0x5e/0x240 [ 76.834659][ T9965] ? rxrpc_unuse_local+0x23/0x70 [ 76.839572][ T9965] end_report+0x47/0x4f [ 76.843710][ T9965] ? rxrpc_unuse_local+0x23/0x70 [ 76.848628][ T9965] __kasan_report.cold+0xe/0x36 [ 76.853458][ T9965] ? _raw_read_unlock_irqrestore+0xc1/0xe0 [ 76.859271][ T9965] ? rxrpc_unuse_local+0x23/0x70 [ 76.864195][ T9965] kasan_report+0x12/0x17 [ 76.868500][ T9965] check_memory_region+0x134/0x1a0 [ 76.873584][ T9965] __kasan_check_write+0x14/0x20 [ 76.878500][ T9965] rxrpc_unuse_local+0x23/0x70 [ 76.883237][ T9965] rxrpc_release+0x47d/0x840 [ 76.887827][ T9965] __sock_release+0xce/0x280 [ 76.892393][ T9965] sock_close+0x1e/0x30 [ 76.896526][ T9965] __fput+0x2ff/0x890 [ 76.900878][ T9965] ? __sock_release+0x280/0x280 [ 76.905706][ T9965] ____fput+0x16/0x20 [ 76.909666][ T9965] task_work_run+0x145/0x1c0 [ 76.914238][ T9965] do_exit+0x92f/0x2e50 [ 76.918375][ T9965] ? __sanitizer_cov_trace_const_cmp4+0x11/0x20 [ 76.925156][ T9965] ? mm_update_next_owner+0x640/0x640 [ 76.930507][ T9965] ? fd_install+0x4d/0x60 [ 76.934814][ T9965] ? __sys_socket+0x180/0x220 [ 76.939469][ T9965] ? move_addr_to_kernel+0x80/0x80 [ 76.944574][ T9965] ? __ia32_sys_fallocate+0xf0/0xf0 [ 76.949773][ T9965] do_group_exit+0x135/0x360 [ 76.954349][ T9965] __x64_sys_exit_group+0x44/0x50 [ 76.959352][ T9965] do_syscall_64+0xfd/0x6a0 [ 76.963924][ T9965] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 76.969793][ T9965] RIP: 0033:0x43ed68 [ 76.973671][ T9965] Code: Bad RIP value. [ 76.977717][ T9965] RSP: 002b:00007ffc89cf4ed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 76.986103][ T9965] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 76.994065][ T9965] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 77.002011][ T9965] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 77.010333][ T9965] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 77.018310][ T9965] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 77.027643][ T9965] Kernel Offset: disabled [ 77.032003][ T9965] Rebooting in 86400 seconds..