[ 69.616518][ T27] audit: type=1800 audit(1565568491.185:27): pid=10164 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 69.637583][ T27] audit: type=1800 audit(1565568491.185:28): pid=10164 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. [ 70.427448][ T27] audit: type=1800 audit(1565568492.065:29): pid=10164 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 [ 70.448493][ T27] audit: type=1800 audit(1565568492.065:30): pid=10164 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 '10.128.0.235' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 80.689353][T10318] ================================================================== [ 80.697470][T10318] BUG: KASAN: null-ptr-deref in rxrpc_unuse_local+0x23/0x70 [ 80.704736][T10318] Write of size 4 at addr 0000000000000010 by task syz-executor830/10318 [ 80.713125][T10318] [ 80.715437][T10318] CPU: 0 PID: 10318 Comm: syz-executor830 Not tainted 5.3.0-rc3-next-20190809 #63 [ 80.724601][T10318] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.734634][T10318] Call Trace: [ 80.737911][T10318] dump_stack+0x172/0x1f0 [ 80.742217][T10318] ? rxrpc_unuse_local+0x23/0x70 [ 80.747130][T10318] ? rxrpc_unuse_local+0x23/0x70 [ 80.752047][T10318] __kasan_report.cold+0x5/0x36 [ 80.756873][T10318] ? _raw_read_unlock_irqrestore+0xd1/0xe0 [ 80.762655][T10318] ? rxrpc_unuse_local+0x23/0x70 [ 80.767575][T10318] kasan_report+0x12/0x17 [ 80.771881][T10318] check_memory_region+0x134/0x1a0 [ 80.776966][T10318] __kasan_check_write+0x14/0x20 [ 80.781885][T10318] rxrpc_unuse_local+0x23/0x70 [ 80.786626][T10318] rxrpc_release+0x47d/0x840 [ 80.791193][T10318] __sock_release+0xce/0x280 [ 80.795760][T10318] sock_close+0x1e/0x30 [ 80.799894][T10318] __fput+0x2ff/0x890 [ 80.803891][T10318] ? __sock_release+0x280/0x280 [ 80.808717][T10318] ____fput+0x16/0x20 [ 80.812712][T10318] task_work_run+0x145/0x1c0 [ 80.817282][T10318] do_exit+0x92f/0x2e50 [ 80.821439][T10318] ? __sanitizer_cov_trace_cmp1+0x11/0x20 [ 80.827177][T10318] ? mm_update_next_owner+0x640/0x640 [ 80.832525][T10318] ? fd_install+0x4d/0x60 [ 80.836833][T10318] ? __sys_socket+0x180/0x220 [ 80.841498][T10318] ? move_addr_to_kernel+0x80/0x80 [ 80.846594][T10318] ? __ia32_sys_fallocate+0xf0/0xf0 [ 80.851772][T10318] do_group_exit+0x135/0x360 [ 80.856363][T10318] __x64_sys_exit_group+0x44/0x50 [ 80.861375][T10318] do_syscall_64+0xfa/0x760 [ 80.865869][T10318] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 80.871734][T10318] RIP: 0033:0x43ed68 [ 80.875608][T10318] Code: Bad RIP value. [ 80.879646][T10318] RSP: 002b:00007ffea516bc18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 80.888034][T10318] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 80.895997][T10318] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 80.903945][T10318] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 80.911890][T10318] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 80.919834][T10318] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 80.927787][T10318] ================================================================== [ 80.936466][T10318] Kernel panic - not syncing: panic_on_warn set ... [ 80.943064][T10318] CPU: 0 PID: 10318 Comm: syz-executor830 Tainted: G B 5.3.0-rc3-next-20190809 #63 [ 80.953636][T10318] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.963703][T10318] Call Trace: [ 80.966983][T10318] dump_stack+0x172/0x1f0 [ 80.971311][T10318] panic+0x2dc/0x755 [ 80.975200][T10318] ? add_taint.cold+0x16/0x16 [ 80.979853][T10318] ? rxrpc_unuse_local+0x23/0x70 [ 80.984771][T10318] ? preempt_schedule+0x4b/0x60 [ 80.989603][T10318] ? ___preempt_schedule+0x16/0x20 [ 80.994701][T10318] ? trace_hardirqs_on+0x5e/0x240 [ 80.999703][T10318] ? rxrpc_unuse_local+0x23/0x70 [ 81.004621][T10318] end_report+0x47/0x4f [ 81.008755][T10318] ? rxrpc_unuse_local+0x23/0x70 [ 81.013691][T10318] __kasan_report.cold+0xe/0x36 [ 81.018539][T10318] ? _raw_read_unlock_irqrestore+0xd1/0xe0 [ 81.024335][T10318] ? rxrpc_unuse_local+0x23/0x70 [ 81.029272][T10318] kasan_report+0x12/0x17 [ 81.033587][T10318] check_memory_region+0x134/0x1a0 [ 81.038678][T10318] __kasan_check_write+0x14/0x20 [ 81.043591][T10318] rxrpc_unuse_local+0x23/0x70 [ 81.048329][T10318] rxrpc_release+0x47d/0x840 [ 81.052913][T10318] __sock_release+0xce/0x280 [ 81.057478][T10318] sock_close+0x1e/0x30 [ 81.061643][T10318] __fput+0x2ff/0x890 [ 81.065620][T10318] ? __sock_release+0x280/0x280 [ 81.070482][T10318] ____fput+0x16/0x20 [ 81.074442][T10318] task_work_run+0x145/0x1c0 [ 81.079014][T10318] do_exit+0x92f/0x2e50 [ 81.083163][T10318] ? __sanitizer_cov_trace_cmp1+0x11/0x20 [ 81.088863][T10318] ? mm_update_next_owner+0x640/0x640 [ 81.094220][T10318] ? fd_install+0x4d/0x60 [ 81.098538][T10318] ? __sys_socket+0x180/0x220 [ 81.103206][T10318] ? move_addr_to_kernel+0x80/0x80 [ 81.108309][T10318] ? __ia32_sys_fallocate+0xf0/0xf0 [ 81.113509][T10318] do_group_exit+0x135/0x360 [ 81.118087][T10318] __x64_sys_exit_group+0x44/0x50 [ 81.123106][T10318] do_syscall_64+0xfa/0x760 [ 81.127592][T10318] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 81.133457][T10318] RIP: 0033:0x43ed68 [ 81.137611][T10318] Code: Bad RIP value. [ 81.141651][T10318] RSP: 002b:00007ffea516bc18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 81.150076][T10318] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 81.158026][T10318] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 81.165976][T10318] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 81.173920][T10318] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 81.181868][T10318] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 81.190847][T10318] Kernel Offset: disabled [ 81.195172][T10318] Rebooting in 86400 seconds..