[ 66.875125][ T27] audit: type=1800 audit(1565590021.080:27): pid=9929 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 66.895552][ T27] audit: type=1800 audit(1565590021.080:28): pid=9929 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. [ 67.550822][ T27] audit: type=1800 audit(1565590021.830:29): pid=9929 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 [ 67.571233][ T27] audit: type=1800 audit(1565590021.830:30): pid=9929 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 '10.128.1.17' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 76.643701][T10085] ================================================================== [ 76.651783][T10085] BUG: KASAN: null-ptr-deref in rxrpc_unuse_local+0x23/0x70 [ 76.659055][T10085] Write of size 4 at addr 0000000000000010 by task syz-executor216/10085 [ 76.667431][T10085] [ 76.669736][T10085] CPU: 0 PID: 10085 Comm: syz-executor216 Not tainted 5.3.0-rc3-next-20190809 #63 [ 76.678891][T10085] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.688917][T10085] Call Trace: [ 76.692187][T10085] dump_stack+0x172/0x1f0 [ 76.696482][T10085] ? rxrpc_unuse_local+0x23/0x70 [ 76.701418][T10085] ? rxrpc_unuse_local+0x23/0x70 [ 76.706327][T10085] __kasan_report.cold+0x5/0x36 [ 76.711170][T10085] ? _raw_read_unlock_irqrestore+0xd1/0xe0 [ 76.716950][T10085] ? rxrpc_unuse_local+0x23/0x70 [ 76.721863][T10085] kasan_report+0x12/0x17 [ 76.726167][T10085] check_memory_region+0x134/0x1a0 [ 76.731253][T10085] __kasan_check_write+0x14/0x20 [ 76.736163][T10085] rxrpc_unuse_local+0x23/0x70 [ 76.740902][T10085] rxrpc_release+0x47d/0x840 [ 76.745479][T10085] __sock_release+0xce/0x280 [ 76.750047][T10085] sock_close+0x1e/0x30 [ 76.754173][T10085] __fput+0x2ff/0x890 [ 76.758144][T10085] ? __sock_release+0x280/0x280 [ 76.762967][T10085] ____fput+0x16/0x20 [ 76.766926][T10085] task_work_run+0x145/0x1c0 [ 76.771496][T10085] do_exit+0x92f/0x2e50 [ 76.775626][T10085] ? __sanitizer_cov_trace_cmp1+0x11/0x20 [ 76.781318][T10085] ? mm_update_next_owner+0x640/0x640 [ 76.786679][T10085] ? fd_install+0x4d/0x60 [ 76.791009][T10085] ? __sys_socket+0x180/0x220 [ 76.795655][T10085] ? move_addr_to_kernel+0x80/0x80 [ 76.800740][T10085] ? __ia32_sys_fallocate+0xf0/0xf0 [ 76.805910][T10085] do_group_exit+0x135/0x360 [ 76.810475][T10085] __x64_sys_exit_group+0x44/0x50 [ 76.815472][T10085] do_syscall_64+0xfa/0x760 [ 76.819951][T10085] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 76.825814][T10085] RIP: 0033:0x43ed68 [ 76.829694][T10085] Code: Bad RIP value. [ 76.833737][T10085] RSP: 002b:00007fff9da29008 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 76.842118][T10085] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 76.850062][T10085] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 76.858010][T10085] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 76.865951][T10085] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 76.873892][T10085] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 76.881837][T10085] ================================================================== [ 76.890297][T10085] Kernel panic - not syncing: panic_on_warn set ... [ 76.896884][T10085] CPU: 0 PID: 10085 Comm: syz-executor216 Tainted: G B 5.3.0-rc3-next-20190809 #63 [ 76.907431][T10085] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.917470][T10085] Call Trace: [ 76.920732][T10085] dump_stack+0x172/0x1f0 [ 76.925033][T10085] panic+0x2dc/0x755 [ 76.928899][T10085] ? add_taint.cold+0x16/0x16 [ 76.933564][T10085] ? rxrpc_unuse_local+0x23/0x70 [ 76.938475][T10085] ? preempt_schedule+0x4b/0x60 [ 76.943323][T10085] ? ___preempt_schedule+0x16/0x20 [ 76.948496][T10085] ? trace_hardirqs_on+0x5e/0x240 [ 76.953492][T10085] ? rxrpc_unuse_local+0x23/0x70 [ 76.958415][T10085] end_report+0x47/0x4f [ 76.962556][T10085] ? rxrpc_unuse_local+0x23/0x70 [ 76.967467][T10085] __kasan_report.cold+0xe/0x36 [ 76.972290][T10085] ? _raw_read_unlock_irqrestore+0xd1/0xe0 [ 76.978065][T10085] ? rxrpc_unuse_local+0x23/0x70 [ 76.982976][T10085] kasan_report+0x12/0x17 [ 76.987289][T10085] check_memory_region+0x134/0x1a0 [ 76.992372][T10085] __kasan_check_write+0x14/0x20 [ 76.997284][T10085] rxrpc_unuse_local+0x23/0x70 [ 77.002018][T10085] rxrpc_release+0x47d/0x840 [ 77.006579][T10085] __sock_release+0xce/0x280 [ 77.011140][T10085] sock_close+0x1e/0x30 [ 77.015282][T10085] __fput+0x2ff/0x890 [ 77.019241][T10085] ? __sock_release+0x280/0x280 [ 77.024062][T10085] ____fput+0x16/0x20 [ 77.028022][T10085] task_work_run+0x145/0x1c0 [ 77.032584][T10085] do_exit+0x92f/0x2e50 [ 77.036707][T10085] ? __sanitizer_cov_trace_cmp1+0x11/0x20 [ 77.042399][T10085] ? mm_update_next_owner+0x640/0x640 [ 77.047745][T10085] ? fd_install+0x4d/0x60 [ 77.052045][T10085] ? __sys_socket+0x180/0x220 [ 77.056690][T10085] ? move_addr_to_kernel+0x80/0x80 [ 77.061784][T10085] ? __ia32_sys_fallocate+0xf0/0xf0 [ 77.066973][T10085] do_group_exit+0x135/0x360 [ 77.071555][T10085] __x64_sys_exit_group+0x44/0x50 [ 77.076550][T10085] do_syscall_64+0xfa/0x760 [ 77.081030][T10085] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 77.086893][T10085] RIP: 0033:0x43ed68 [ 77.090769][T10085] Code: Bad RIP value. [ 77.094806][T10085] RSP: 002b:00007fff9da29008 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 77.103200][T10085] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 77.111168][T10085] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 77.119115][T10085] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 77.127060][T10085] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 77.135006][T10085] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 77.143956][T10085] Kernel Offset: disabled [ 77.148272][T10085] Rebooting in 86400 seconds..