[ 66.031080][ T26] audit: type=1800 audit(1565345426.441:27): pid=9857 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 66.053641][ T26] audit: type=1800 audit(1565345426.441:28): pid=9857 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. [ 66.689249][ T26] audit: type=1800 audit(1565345427.131:29): pid=9857 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 [ 66.712030][ T26] audit: type=1800 audit(1565345427.131:30): pid=9857 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 '10.128.0.189' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 77.844598][T10010] ================================================================== [ 77.852680][T10010] BUG: KASAN: null-ptr-deref in rxrpc_unuse_local+0x23/0x70 [ 77.860036][T10010] Write of size 4 at addr 0000000000000010 by task syz-executor725/10010 [ 77.868534][T10010] [ 77.870853][T10010] CPU: 1 PID: 10010 Comm: syz-executor725 Not tainted 5.3.0-rc3-next-20190809 #63 [ 77.880018][T10010] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.890107][T10010] Call Trace: [ 77.893382][T10010] dump_stack+0x172/0x1f0 [ 77.897685][T10010] ? rxrpc_unuse_local+0x23/0x70 [ 77.903202][T10010] ? rxrpc_unuse_local+0x23/0x70 [ 77.908126][T10010] __kasan_report.cold+0x5/0x36 [ 77.913067][T10010] ? _raw_read_unlock_irqrestore+0xd1/0xe0 [ 77.918852][T10010] ? rxrpc_unuse_local+0x23/0x70 [ 77.923769][T10010] kasan_report+0x12/0x17 [ 77.928194][T10010] check_memory_region+0x134/0x1a0 [ 77.933290][T10010] __kasan_check_write+0x14/0x20 [ 77.938204][T10010] rxrpc_unuse_local+0x23/0x70 [ 77.942943][T10010] rxrpc_release+0x47d/0x840 [ 77.947561][T10010] __sock_release+0xce/0x280 [ 77.952136][T10010] sock_close+0x1e/0x30 [ 77.956400][T10010] __fput+0x2ff/0x890 [ 77.960471][T10010] ? __sock_release+0x280/0x280 [ 77.965481][T10010] ____fput+0x16/0x20 [ 77.969454][T10010] task_work_run+0x145/0x1c0 [ 77.974150][T10010] do_exit+0x92f/0x2e50 [ 77.978288][T10010] ? __sanitizer_cov_trace_cmp1+0x11/0x20 [ 77.984112][T10010] ? mm_update_next_owner+0x640/0x640 [ 77.989471][T10010] ? fd_install+0x4d/0x60 [ 77.993891][T10010] ? __sys_socket+0x180/0x220 [ 77.998548][T10010] ? move_addr_to_kernel+0x80/0x80 [ 78.003734][T10010] ? __ia32_sys_fallocate+0xf0/0xf0 [ 78.008925][T10010] do_group_exit+0x135/0x360 [ 78.013504][T10010] __x64_sys_exit_group+0x44/0x50 [ 78.018519][T10010] do_syscall_64+0xfa/0x760 [ 78.023013][T10010] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.029049][T10010] RIP: 0033:0x43ed68 [ 78.032953][T10010] Code: Bad RIP value. [ 78.037067][T10010] RSP: 002b:00007ffc2b7b93f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 78.045464][T10010] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 78.053473][T10010] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 78.061526][T10010] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 78.069527][T10010] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 78.077481][T10010] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 78.085627][T10010] ================================================================== [ 78.094169][T10010] Kernel panic - not syncing: panic_on_warn set ... [ 78.100756][T10010] CPU: 1 PID: 10010 Comm: syz-executor725 Tainted: G B 5.3.0-rc3-next-20190809 #63 [ 78.111470][T10010] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.121507][T10010] Call Trace: [ 78.124782][T10010] dump_stack+0x172/0x1f0 [ 78.129110][T10010] panic+0x2dc/0x755 [ 78.133053][T10010] ? add_taint.cold+0x16/0x16 [ 78.137724][T10010] ? rxrpc_unuse_local+0x23/0x70 [ 78.142646][T10010] ? preempt_schedule+0x4b/0x60 [ 78.147484][T10010] ? ___preempt_schedule+0x16/0x20 [ 78.152683][T10010] ? trace_hardirqs_on+0x5e/0x240 [ 78.157685][T10010] ? rxrpc_unuse_local+0x23/0x70 [ 78.162670][T10010] end_report+0x47/0x4f [ 78.166810][T10010] ? rxrpc_unuse_local+0x23/0x70 [ 78.171720][T10010] __kasan_report.cold+0xe/0x36 [ 78.176637][T10010] ? _raw_read_unlock_irqrestore+0xd1/0xe0 [ 78.182610][T10010] ? rxrpc_unuse_local+0x23/0x70 [ 78.187526][T10010] kasan_report+0x12/0x17 [ 78.191829][T10010] check_memory_region+0x134/0x1a0 [ 78.196924][T10010] __kasan_check_write+0x14/0x20 [ 78.201909][T10010] rxrpc_unuse_local+0x23/0x70 [ 78.206657][T10010] rxrpc_release+0x47d/0x840 [ 78.211222][T10010] __sock_release+0xce/0x280 [ 78.215786][T10010] sock_close+0x1e/0x30 [ 78.219924][T10010] __fput+0x2ff/0x890 [ 78.224028][T10010] ? __sock_release+0x280/0x280 [ 78.228854][T10010] ____fput+0x16/0x20 [ 78.232814][T10010] task_work_run+0x145/0x1c0 [ 78.237476][T10010] do_exit+0x92f/0x2e50 [ 78.241618][T10010] ? __sanitizer_cov_trace_cmp1+0x11/0x20 [ 78.247400][T10010] ? mm_update_next_owner+0x640/0x640 [ 78.252760][T10010] ? fd_install+0x4d/0x60 [ 78.257071][T10010] ? __sys_socket+0x180/0x220 [ 78.261729][T10010] ? move_addr_to_kernel+0x80/0x80 [ 78.266818][T10010] ? __ia32_sys_fallocate+0xf0/0xf0 [ 78.272003][T10010] do_group_exit+0x135/0x360 [ 78.276579][T10010] __x64_sys_exit_group+0x44/0x50 [ 78.281590][T10010] do_syscall_64+0xfa/0x760 [ 78.286162][T10010] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.292041][T10010] RIP: 0033:0x43ed68 [ 78.296034][T10010] Code: Bad RIP value. [ 78.300077][T10010] RSP: 002b:00007ffc2b7b93f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 78.308471][T10010] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 78.316440][T10010] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 78.324424][T10010] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 78.332383][T10010] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 78.340338][T10010] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 78.349499][T10010] Kernel Offset: disabled [ 78.353882][T10010] Rebooting in 86400 seconds..