[ 72.514388][ T27] audit: type=1800 audit(1565569952.488:27): pid=10053 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 72.537628][ T27] audit: type=1800 audit(1565569952.488:28): pid=10053 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. [ 73.221928][ T27] audit: type=1800 audit(1565569953.268:29): pid=10053 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 [ 73.246326][ T27] audit: type=1800 audit(1565569953.278:30): pid=10053 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 '10.128.0.65' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 84.124250][T10205] ================================================================== [ 84.132360][T10205] BUG: KASAN: null-ptr-deref in rxrpc_unuse_local+0x23/0x70 [ 84.139623][T10205] Write of size 4 at addr 0000000000000010 by task syz-executor062/10205 [ 84.148019][T10205] [ 84.150335][T10205] CPU: 1 PID: 10205 Comm: syz-executor062 Not tainted 5.3.0-rc3-next-20190809 #63 [ 84.159677][T10205] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 84.169719][T10205] Call Trace: [ 84.173018][T10205] dump_stack+0x172/0x1f0 [ 84.177331][T10205] ? rxrpc_unuse_local+0x23/0x70 [ 84.182245][T10205] ? rxrpc_unuse_local+0x23/0x70 [ 84.187183][T10205] __kasan_report.cold+0x5/0x36 [ 84.192021][T10205] ? _raw_read_unlock_irqrestore+0xd1/0xe0 [ 84.197810][T10205] ? rxrpc_unuse_local+0x23/0x70 [ 84.202756][T10205] kasan_report+0x12/0x17 [ 84.207077][T10205] check_memory_region+0x134/0x1a0 [ 84.212171][T10205] __kasan_check_write+0x14/0x20 [ 84.217088][T10205] rxrpc_unuse_local+0x23/0x70 [ 84.221855][T10205] rxrpc_release+0x47d/0x840 [ 84.226434][T10205] __sock_release+0xce/0x280 [ 84.231002][T10205] sock_close+0x1e/0x30 [ 84.235153][T10205] __fput+0x2ff/0x890 [ 84.239114][T10205] ? __sock_release+0x280/0x280 [ 84.243943][T10205] ____fput+0x16/0x20 [ 84.247906][T10205] task_work_run+0x145/0x1c0 [ 84.252474][T10205] do_exit+0x92f/0x2e50 [ 84.256611][T10205] ? __sanitizer_cov_trace_cmp1+0x11/0x20 [ 84.262318][T10205] ? mm_update_next_owner+0x640/0x640 [ 84.267665][T10205] ? fd_install+0x4d/0x60 [ 84.271972][T10205] ? __sys_socket+0x180/0x220 [ 84.276627][T10205] ? move_addr_to_kernel+0x80/0x80 [ 84.281717][T10205] ? __ia32_sys_fallocate+0xf0/0xf0 [ 84.286900][T10205] do_group_exit+0x135/0x360 [ 84.291468][T10205] __x64_sys_exit_group+0x44/0x50 [ 84.296487][T10205] do_syscall_64+0xfa/0x760 [ 84.300973][T10205] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 84.306864][T10205] RIP: 0033:0x43ed68 [ 84.310759][T10205] Code: Bad RIP value. [ 84.314810][T10205] RSP: 002b:00007ffefabbb448 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 84.323225][T10205] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 84.331200][T10205] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 84.339164][T10205] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 84.347206][T10205] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 84.355179][T10205] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 84.363134][T10205] ================================================================== [ 84.371543][T10205] Kernel panic - not syncing: panic_on_warn set ... [ 84.378165][T10205] CPU: 1 PID: 10205 Comm: syz-executor062 Tainted: G B 5.3.0-rc3-next-20190809 #63 [ 84.388725][T10205] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 84.398776][T10205] Call Trace: [ 84.402053][T10205] dump_stack+0x172/0x1f0 [ 84.406371][T10205] panic+0x2dc/0x755 [ 84.410268][T10205] ? add_taint.cold+0x16/0x16 [ 84.414923][T10205] ? rxrpc_unuse_local+0x23/0x70 [ 84.419859][T10205] ? preempt_schedule+0x4b/0x60 [ 84.424700][T10205] ? ___preempt_schedule+0x16/0x20 [ 84.429822][T10205] ? trace_hardirqs_on+0x5e/0x240 [ 84.434835][T10205] ? rxrpc_unuse_local+0x23/0x70 [ 84.439776][T10205] end_report+0x47/0x4f [ 84.444013][T10205] ? rxrpc_unuse_local+0x23/0x70 [ 84.448957][T10205] __kasan_report.cold+0xe/0x36 [ 84.453805][T10205] ? _raw_read_unlock_irqrestore+0xd1/0xe0 [ 84.459608][T10205] ? rxrpc_unuse_local+0x23/0x70 [ 84.464527][T10205] kasan_report+0x12/0x17 [ 84.468854][T10205] check_memory_region+0x134/0x1a0 [ 84.473974][T10205] __kasan_check_write+0x14/0x20 [ 84.478907][T10205] rxrpc_unuse_local+0x23/0x70 [ 84.483649][T10205] rxrpc_release+0x47d/0x840 [ 84.488328][T10205] __sock_release+0xce/0x280 [ 84.492900][T10205] sock_close+0x1e/0x30 [ 84.497039][T10205] __fput+0x2ff/0x890 [ 84.500999][T10205] ? __sock_release+0x280/0x280 [ 84.505832][T10205] ____fput+0x16/0x20 [ 84.509812][T10205] task_work_run+0x145/0x1c0 [ 84.514383][T10205] do_exit+0x92f/0x2e50 [ 84.518520][T10205] ? __sanitizer_cov_trace_cmp1+0x11/0x20 [ 84.524227][T10205] ? mm_update_next_owner+0x640/0x640 [ 84.529693][T10205] ? fd_install+0x4d/0x60 [ 84.534001][T10205] ? __sys_socket+0x180/0x220 [ 84.538686][T10205] ? move_addr_to_kernel+0x80/0x80 [ 84.543798][T10205] ? __ia32_sys_fallocate+0xf0/0xf0 [ 84.549244][T10205] do_group_exit+0x135/0x360 [ 84.553824][T10205] __x64_sys_exit_group+0x44/0x50 [ 84.558838][T10205] do_syscall_64+0xfa/0x760 [ 84.563331][T10205] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 84.569210][T10205] RIP: 0033:0x43ed68 [ 84.573103][T10205] Code: Bad RIP value. [ 84.577147][T10205] RSP: 002b:00007ffefabbb448 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 84.585534][T10205] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 84.593486][T10205] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 84.601439][T10205] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 84.609390][T10205] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 84.617528][T10205] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 84.626590][T10205] Kernel Offset: disabled [ 84.630919][T10205] Rebooting in 86400 seconds..