[ 72.668349][ T27] audit: type=1800 audit(1565591399.339:27): pid=10180 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 72.701537][ T27] audit: type=1800 audit(1565591399.419:28): pid=10180 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. [ 73.332026][ T27] audit: type=1800 audit(1565591400.059:29): pid=10180 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 [ 73.355212][ T27] audit: type=1800 audit(1565591400.059:30): pid=10180 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 '10.128.15.193' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 82.580962][T10335] ================================================================== [ 82.589087][T10335] BUG: KASAN: null-ptr-deref in rxrpc_unuse_local+0x23/0x70 [ 82.596344][T10335] Write of size 4 at addr 0000000000000010 by task syz-executor408/10335 [ 82.604721][T10335] [ 82.607129][T10335] CPU: 0 PID: 10335 Comm: syz-executor408 Not tainted 5.3.0-rc3-next-20190809 #63 [ 82.616294][T10335] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.626346][T10335] Call Trace: [ 82.629634][T10335] dump_stack+0x172/0x1f0 [ 82.633938][T10335] ? rxrpc_unuse_local+0x23/0x70 [ 82.638848][T10335] ? rxrpc_unuse_local+0x23/0x70 [ 82.643778][T10335] __kasan_report.cold+0x5/0x36 [ 82.648612][T10335] ? _raw_read_unlock_irqrestore+0xd1/0xe0 [ 82.654390][T10335] ? rxrpc_unuse_local+0x23/0x70 [ 82.659318][T10335] kasan_report+0x12/0x17 [ 82.663637][T10335] check_memory_region+0x134/0x1a0 [ 82.668723][T10335] __kasan_check_write+0x14/0x20 [ 82.673630][T10335] rxrpc_unuse_local+0x23/0x70 [ 82.678394][T10335] rxrpc_release+0x47d/0x840 [ 82.682960][T10335] __sock_release+0xce/0x280 [ 82.687537][T10335] sock_close+0x1e/0x30 [ 82.691678][T10335] __fput+0x2ff/0x890 [ 82.695662][T10335] ? __sock_release+0x280/0x280 [ 82.700488][T10335] ____fput+0x16/0x20 [ 82.704445][T10335] task_work_run+0x145/0x1c0 [ 82.709014][T10335] do_exit+0x92f/0x2e50 [ 82.713149][T10335] ? __sanitizer_cov_trace_cmp1+0x11/0x20 [ 82.718846][T10335] ? mm_update_next_owner+0x640/0x640 [ 82.724211][T10335] ? fd_install+0x4d/0x60 [ 82.728522][T10335] ? __sys_socket+0x180/0x220 [ 82.733169][T10335] ? move_addr_to_kernel+0x80/0x80 [ 82.738271][T10335] ? __ia32_sys_fallocate+0xf0/0xf0 [ 82.743446][T10335] do_group_exit+0x135/0x360 [ 82.748013][T10335] __x64_sys_exit_group+0x44/0x50 [ 82.753020][T10335] do_syscall_64+0xfa/0x760 [ 82.757503][T10335] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 82.763368][T10335] RIP: 0033:0x43ed68 [ 82.767244][T10335] Code: Bad RIP value. [ 82.771282][T10335] RSP: 002b:00007fff39c612a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 82.779665][T10335] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 82.787630][T10335] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 82.795585][T10335] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 82.803531][T10335] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 82.811568][T10335] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 82.820358][T10335] ================================================================== [ 82.829257][T10335] Kernel panic - not syncing: panic_on_warn set ... [ 82.835853][T10335] CPU: 0 PID: 10335 Comm: syz-executor408 Tainted: G B 5.3.0-rc3-next-20190809 #63 [ 82.846403][T10335] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.856434][T10335] Call Trace: [ 82.859702][T10335] dump_stack+0x172/0x1f0 [ 82.864009][T10335] panic+0x2dc/0x755 [ 82.867881][T10335] ? add_taint.cold+0x16/0x16 [ 82.872532][T10335] ? rxrpc_unuse_local+0x23/0x70 [ 82.877441][T10335] ? preempt_schedule+0x4b/0x60 [ 82.882269][T10335] ? ___preempt_schedule+0x16/0x20 [ 82.887364][T10335] ? trace_hardirqs_on+0x5e/0x240 [ 82.892367][T10335] ? rxrpc_unuse_local+0x23/0x70 [ 82.897280][T10335] end_report+0x47/0x4f [ 82.901410][T10335] ? rxrpc_unuse_local+0x23/0x70 [ 82.906320][T10335] __kasan_report.cold+0xe/0x36 [ 82.911184][T10335] ? _raw_read_unlock_irqrestore+0xd1/0xe0 [ 82.916961][T10335] ? rxrpc_unuse_local+0x23/0x70 [ 82.921887][T10335] kasan_report+0x12/0x17 [ 82.926189][T10335] check_memory_region+0x134/0x1a0 [ 82.931273][T10335] __kasan_check_write+0x14/0x20 [ 82.936183][T10335] rxrpc_unuse_local+0x23/0x70 [ 82.940925][T10335] rxrpc_release+0x47d/0x840 [ 82.945489][T10335] __sock_release+0xce/0x280 [ 82.950934][T10335] sock_close+0x1e/0x30 [ 82.955168][T10335] __fput+0x2ff/0x890 [ 82.959126][T10335] ? __sock_release+0x280/0x280 [ 82.963949][T10335] ____fput+0x16/0x20 [ 82.967910][T10335] task_work_run+0x145/0x1c0 [ 82.972473][T10335] do_exit+0x92f/0x2e50 [ 82.976605][T10335] ? __sanitizer_cov_trace_cmp1+0x11/0x20 [ 82.982313][T10335] ? mm_update_next_owner+0x640/0x640 [ 82.987661][T10335] ? fd_install+0x4d/0x60 [ 82.991976][T10335] ? __sys_socket+0x180/0x220 [ 82.996625][T10335] ? move_addr_to_kernel+0x80/0x80 [ 83.001711][T10335] ? __ia32_sys_fallocate+0xf0/0xf0 [ 83.006899][T10335] do_group_exit+0x135/0x360 [ 83.011468][T10335] __x64_sys_exit_group+0x44/0x50 [ 83.016468][T10335] do_syscall_64+0xfa/0x760 [ 83.020953][T10335] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 83.026819][T10335] RIP: 0033:0x43ed68 [ 83.030697][T10335] Code: Bad RIP value. [ 83.034737][T10335] RSP: 002b:00007fff39c612a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 83.043140][T10335] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 83.051087][T10335] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 83.059033][T10335] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 83.067001][T10335] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 83.074953][T10335] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 83.083976][T10335] Kernel Offset: disabled [ 83.088296][T10335] Rebooting in 86400 seconds..