[ 70.116188][ T26] audit: type=1800 audit(1565564676.734:27): pid=10267 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 70.152721][ T26] audit: type=1800 audit(1565564676.734:28): pid=10267 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. [ 70.911538][ T26] audit: type=1800 audit(1565564677.584:29): pid=10267 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 [ 70.935283][ T26] audit: type=1800 audit(1565564677.594:30): pid=10267 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 '10.128.1.37' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 77.794984][T10419] ================================================================== [ 77.803074][T10419] BUG: KASAN: null-ptr-deref in rxrpc_unuse_local+0x23/0x70 [ 77.810342][T10419] Write of size 4 at addr 0000000000000010 by task syz-executor901/10419 [ 77.818730][T10419] [ 77.821040][T10419] CPU: 0 PID: 10419 Comm: syz-executor901 Not tainted 5.3.0-rc3-next-20190809 #63 [ 77.830209][T10419] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.840240][T10419] Call Trace: [ 77.843510][T10419] dump_stack+0x172/0x1f0 [ 77.847836][T10419] ? rxrpc_unuse_local+0x23/0x70 [ 77.853011][T10419] ? rxrpc_unuse_local+0x23/0x70 [ 77.857939][T10419] __kasan_report.cold+0x5/0x36 [ 77.862773][T10419] ? _raw_read_unlock_irqrestore+0xd1/0xe0 [ 77.868555][T10419] ? rxrpc_unuse_local+0x23/0x70 [ 77.873474][T10419] kasan_report+0x12/0x17 [ 77.877798][T10419] check_memory_region+0x134/0x1a0 [ 77.882890][T10419] __kasan_check_write+0x14/0x20 [ 77.887803][T10419] rxrpc_unuse_local+0x23/0x70 [ 77.892543][T10419] rxrpc_release+0x47d/0x840 [ 77.897112][T10419] __sock_release+0xce/0x280 [ 77.901678][T10419] sock_close+0x1e/0x30 [ 77.905811][T10419] __fput+0x2ff/0x890 [ 77.909788][T10419] ? __sock_release+0x280/0x280 [ 77.914618][T10419] ____fput+0x16/0x20 [ 77.918594][T10419] task_work_run+0x145/0x1c0 [ 77.923167][T10419] do_exit+0x92f/0x2e50 [ 77.927316][T10419] ? __sanitizer_cov_trace_cmp1+0x11/0x20 [ 77.933013][T10419] ? mm_update_next_owner+0x640/0x640 [ 77.938358][T10419] ? fd_install+0x4d/0x60 [ 77.942666][T10419] ? __sys_socket+0x180/0x220 [ 77.947416][T10419] ? move_addr_to_kernel+0x80/0x80 [ 77.952507][T10419] ? __ia32_sys_fallocate+0xf0/0xf0 [ 77.957683][T10419] do_group_exit+0x135/0x360 [ 77.962262][T10419] __x64_sys_exit_group+0x44/0x50 [ 77.967278][T10419] do_syscall_64+0xfa/0x760 [ 77.971760][T10419] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 77.977629][T10419] RIP: 0033:0x43ed68 [ 77.981511][T10419] Code: Bad RIP value. [ 77.985567][T10419] RSP: 002b:00007fff32120478 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 77.993953][T10419] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 78.001904][T10419] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 78.009942][T10419] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 78.017908][T10419] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 78.025861][T10419] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 78.033907][T10419] ================================================================== [ 78.042804][T10419] Kernel panic - not syncing: panic_on_warn set ... [ 78.049404][T10419] CPU: 1 PID: 10419 Comm: syz-executor901 Tainted: G B 5.3.0-rc3-next-20190809 #63 [ 78.059955][T10419] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.069985][T10419] Call Trace: [ 78.073256][T10419] dump_stack+0x172/0x1f0 [ 78.077563][T10419] panic+0x2dc/0x755 [ 78.081435][T10419] ? add_taint.cold+0x16/0x16 [ 78.086088][T10419] ? rxrpc_unuse_local+0x23/0x70 [ 78.091014][T10419] ? preempt_schedule+0x4b/0x60 [ 78.095846][T10419] ? ___preempt_schedule+0x16/0x20 [ 78.100936][T10419] ? trace_hardirqs_on+0x5e/0x240 [ 78.110760][T10419] ? rxrpc_unuse_local+0x23/0x70 [ 78.116050][T10419] end_report+0x47/0x4f [ 78.120185][T10419] ? rxrpc_unuse_local+0x23/0x70 [ 78.125104][T10419] __kasan_report.cold+0xe/0x36 [ 78.130018][T10419] ? _raw_read_unlock_irqrestore+0xd1/0xe0 [ 78.135807][T10419] ? rxrpc_unuse_local+0x23/0x70 [ 78.140722][T10419] kasan_report+0x12/0x17 [ 78.145027][T10419] check_memory_region+0x134/0x1a0 [ 78.150119][T10419] __kasan_check_write+0x14/0x20 [ 78.155057][T10419] rxrpc_unuse_local+0x23/0x70 [ 78.159865][T10419] rxrpc_release+0x47d/0x840 [ 78.164454][T10419] __sock_release+0xce/0x280 [ 78.169032][T10419] sock_close+0x1e/0x30 [ 78.173182][T10419] __fput+0x2ff/0x890 [ 78.177148][T10419] ? __sock_release+0x280/0x280 [ 78.181981][T10419] ____fput+0x16/0x20 [ 78.185947][T10419] task_work_run+0x145/0x1c0 [ 78.190519][T10419] do_exit+0x92f/0x2e50 [ 78.194660][T10419] ? __sanitizer_cov_trace_cmp1+0x11/0x20 [ 78.200360][T10419] ? mm_update_next_owner+0x640/0x640 [ 78.205797][T10419] ? fd_install+0x4d/0x60 [ 78.210124][T10419] ? __sys_socket+0x180/0x220 [ 78.214795][T10419] ? move_addr_to_kernel+0x80/0x80 [ 78.219887][T10419] ? __ia32_sys_fallocate+0xf0/0xf0 [ 78.225070][T10419] do_group_exit+0x135/0x360 [ 78.229645][T10419] __x64_sys_exit_group+0x44/0x50 [ 78.234651][T10419] do_syscall_64+0xfa/0x760 [ 78.239136][T10419] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.245009][T10419] RIP: 0033:0x43ed68 [ 78.248882][T10419] Code: 00 00 44 89 c2 44 89 c0 41 83 c3 01 c1 fa 1f f7 f9 0f bf d0 41 89 c2 89 c8 0f af d1 41 83 c2 30 c1 f9 1f 45 88 11 49 83 c1 01 <41> 29 d0 f7 eb c1 fa 02 29 ca 89 d1 75 ca 41 8d 43 01 49 63 cb 4c [ 78.268470][T10419] RSP: 002b:00007fff32120478 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 78.276873][T10419] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 78.284824][T10419] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 78.292785][T10419] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 78.300732][T10419] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 78.308678][T10419] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 78.317632][T10419] Kernel Offset: disabled [ 78.321978][T10419] Rebooting in 86400 seconds..