[ 70.981824][ T26] audit: type=1800 audit(1565624857.510:27): pid=10294 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 71.008725][ T26] audit: type=1800 audit(1565624857.510:28): pid=10294 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. [ 71.691937][ T26] audit: type=1800 audit(1565624858.300:29): pid=10294 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 [ 71.726145][ T26] audit: type=1800 audit(1565624858.300:30): pid=10294 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 '10.128.0.119' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 78.255116][T10446] ================================================================== [ 78.263326][T10446] BUG: KASAN: null-ptr-deref in rxrpc_unuse_local+0x23/0x70 [ 78.270816][T10446] Write of size 4 at addr 0000000000000010 by task syz-executor057/10446 [ 78.279211][T10446] [ 78.281549][T10446] CPU: 0 PID: 10446 Comm: syz-executor057 Not tainted 5.3.0-rc4-next-20190812+ #64 [ 78.290806][T10446] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.300866][T10446] Call Trace: [ 78.304146][T10446] dump_stack+0x172/0x1f0 [ 78.308470][T10446] ? rxrpc_unuse_local+0x23/0x70 [ 78.313477][T10446] ? rxrpc_unuse_local+0x23/0x70 [ 78.318406][T10446] __kasan_report.cold+0x5/0x36 [ 78.323269][T10446] ? _raw_spin_unlock_irqrestore+0x11/0xe0 [ 78.329072][T10446] ? rxrpc_unuse_local+0x23/0x70 [ 78.334031][T10446] kasan_report+0x12/0x17 [ 78.338374][T10446] check_memory_region+0x134/0x1a0 [ 78.343687][T10446] __kasan_check_write+0x14/0x20 [ 78.348638][T10446] rxrpc_unuse_local+0x23/0x70 [ 78.353602][T10446] rxrpc_release+0x47d/0x840 [ 78.358192][T10446] __sock_release+0xce/0x280 [ 78.362801][T10446] sock_close+0x1e/0x30 [ 78.366949][T10446] __fput+0x2ff/0x890 [ 78.370943][T10446] ? __sock_release+0x280/0x280 [ 78.375787][T10446] ____fput+0x16/0x20 [ 78.379762][T10446] task_work_run+0x145/0x1c0 [ 78.384614][T10446] do_exit+0x92f/0x2e50 [ 78.389353][T10446] ? write_comp_data+0x51/0x70 [ 78.394654][T10446] ? mm_update_next_owner+0x640/0x640 [ 78.400026][T10446] ? fd_install+0x4d/0x60 [ 78.404374][T10446] ? __sys_socket+0x180/0x220 [ 78.409045][T10446] ? move_addr_to_kernel+0x80/0x80 [ 78.414160][T10446] ? __ia32_sys_fallocate+0xf0/0xf0 [ 78.419384][T10446] do_group_exit+0x135/0x360 [ 78.424012][T10446] __x64_sys_exit_group+0x44/0x50 [ 78.429023][T10446] do_syscall_64+0xfa/0x760 [ 78.433553][T10446] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.439443][T10446] RIP: 0033:0x43ed68 [ 78.443335][T10446] Code: Bad RIP value. [ 78.447394][T10446] RSP: 002b:00007fff7dfde6d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 78.455983][T10446] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 78.463968][T10446] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 78.471928][T10446] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 78.479902][T10446] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 78.487889][T10446] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 78.495858][T10446] ================================================================== [ 78.504386][T10446] Kernel panic - not syncing: panic_on_warn set ... [ 78.510997][T10446] CPU: 0 PID: 10446 Comm: syz-executor057 Tainted: G B 5.3.0-rc4-next-20190812+ #64 [ 78.521665][T10446] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.531722][T10446] Call Trace: [ 78.535017][T10446] dump_stack+0x172/0x1f0 [ 78.539347][T10446] panic+0x2dc/0x755 [ 78.543263][T10446] ? add_taint.cold+0x16/0x16 [ 78.547952][T10446] ? rxrpc_unuse_local+0x23/0x70 [ 78.552920][T10446] ? preempt_schedule+0x4b/0x60 [ 78.557764][T10446] ? ___preempt_schedule+0x16/0x20 [ 78.562867][T10446] ? trace_hardirqs_on+0x5e/0x240 [ 78.567898][T10446] ? rxrpc_unuse_local+0x23/0x70 [ 78.572834][T10446] end_report+0x47/0x4f [ 78.576970][T10446] ? rxrpc_unuse_local+0x23/0x70 [ 78.581907][T10446] __kasan_report.cold+0xe/0x36 [ 78.586749][T10446] ? _raw_spin_unlock_irqrestore+0x11/0xe0 [ 78.592555][T10446] ? rxrpc_unuse_local+0x23/0x70 [ 78.597486][T10446] kasan_report+0x12/0x17 [ 78.601809][T10446] check_memory_region+0x134/0x1a0 [ 78.606908][T10446] __kasan_check_write+0x14/0x20 [ 78.611830][T10446] rxrpc_unuse_local+0x23/0x70 [ 78.616578][T10446] rxrpc_release+0x47d/0x840 [ 78.621164][T10446] __sock_release+0xce/0x280 [ 78.625741][T10446] sock_close+0x1e/0x30 [ 78.629895][T10446] __fput+0x2ff/0x890 [ 78.633860][T10446] ? __sock_release+0x280/0x280 [ 78.638692][T10446] ____fput+0x16/0x20 [ 78.642692][T10446] task_work_run+0x145/0x1c0 [ 78.647276][T10446] do_exit+0x92f/0x2e50 [ 78.651421][T10446] ? write_comp_data+0x51/0x70 [ 78.656168][T10446] ? mm_update_next_owner+0x640/0x640 [ 78.661535][T10446] ? fd_install+0x4d/0x60 [ 78.665865][T10446] ? __sys_socket+0x180/0x220 [ 78.670529][T10446] ? move_addr_to_kernel+0x80/0x80 [ 78.675621][T10446] ? __ia32_sys_fallocate+0xf0/0xf0 [ 78.680832][T10446] do_group_exit+0x135/0x360 [ 78.685597][T10446] __x64_sys_exit_group+0x44/0x50 [ 78.690609][T10446] do_syscall_64+0xfa/0x760 [ 78.695097][T10446] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.701007][T10446] RIP: 0033:0x43ed68 [ 78.704897][T10446] Code: Bad RIP value. [ 78.708965][T10446] RSP: 002b:00007fff7dfde6d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 78.717659][T10446] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 78.725624][T10446] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 78.733582][T10446] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 78.741544][T10446] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 78.749501][T10446] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 78.758557][T10446] Kernel Offset: disabled [ 78.762904][T10446] Rebooting in 86400 seconds..