[ 64.621802][ T26] audit: type=1800 audit(1565602523.849:27): pid=10019 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 64.654207][ T26] audit: type=1800 audit(1565602523.849:28): pid=10019 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. [ 65.139439][ T26] audit: type=1800 audit(1565602524.409:29): pid=10019 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 [ 65.162828][ T26] audit: type=1800 audit(1565602524.409:30): pid=10019 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 '10.128.0.73' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 72.541657][T10168] ================================================================== [ 72.549793][T10168] BUG: KASAN: null-ptr-deref in rxrpc_unuse_local+0x23/0x70 [ 72.557080][T10168] Write of size 4 at addr 0000000000000010 by task syz-executor656/10168 [ 72.565468][T10168] [ 72.567779][T10168] CPU: 0 PID: 10168 Comm: syz-executor656 Not tainted 5.3.0-rc3-next-20190809 #63 [ 72.576946][T10168] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.587170][T10168] Call Trace: [ 72.590457][T10168] dump_stack+0x172/0x1f0 [ 72.594777][T10168] ? rxrpc_unuse_local+0x23/0x70 [ 72.599702][T10168] ? rxrpc_unuse_local+0x23/0x70 [ 72.604640][T10168] __kasan_report.cold+0x5/0x36 [ 72.609479][T10168] ? _raw_read_unlock_irqrestore+0xd1/0xe0 [ 72.615272][T10168] ? rxrpc_unuse_local+0x23/0x70 [ 72.620203][T10168] kasan_report+0x12/0x17 [ 72.624537][T10168] check_memory_region+0x134/0x1a0 [ 72.629654][T10168] __kasan_check_write+0x14/0x20 [ 72.634578][T10168] rxrpc_unuse_local+0x23/0x70 [ 72.639325][T10168] rxrpc_release+0x47d/0x840 [ 72.643924][T10168] __sock_release+0xce/0x280 [ 72.648509][T10168] sock_close+0x1e/0x30 [ 72.652647][T10168] __fput+0x2ff/0x890 [ 72.656608][T10168] ? __sock_release+0x280/0x280 [ 72.661443][T10168] ____fput+0x16/0x20 [ 72.665410][T10168] task_work_run+0x145/0x1c0 [ 72.671054][T10168] do_exit+0x92f/0x2e50 [ 72.675221][T10168] ? __sanitizer_cov_trace_cmp1+0x11/0x20 [ 72.680941][T10168] ? mm_update_next_owner+0x640/0x640 [ 72.686311][T10168] ? fd_install+0x4d/0x60 [ 72.690622][T10168] ? __sys_socket+0x180/0x220 [ 72.695297][T10168] ? move_addr_to_kernel+0x80/0x80 [ 72.700417][T10168] ? __ia32_sys_fallocate+0xf0/0xf0 [ 72.705605][T10168] do_group_exit+0x135/0x360 [ 72.710192][T10168] __x64_sys_exit_group+0x44/0x50 [ 72.715203][T10168] do_syscall_64+0xfa/0x760 [ 72.719697][T10168] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 72.725591][T10168] RIP: 0033:0x43ed68 [ 72.729492][T10168] Code: Bad RIP value. [ 72.733536][T10168] RSP: 002b:00007ffead8b2828 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 72.741946][T10168] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 72.749901][T10168] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 72.757876][T10168] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 72.765861][T10168] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 72.773837][T10168] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 72.781826][T10168] ================================================================== [ 72.791090][T10168] Kernel panic - not syncing: panic_on_warn set ... [ 72.797692][T10168] CPU: 0 PID: 10168 Comm: syz-executor656 Tainted: G B 5.3.0-rc3-next-20190809 #63 [ 72.808252][T10168] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.818309][T10168] Call Trace: [ 72.821587][T10168] dump_stack+0x172/0x1f0 [ 72.825908][T10168] panic+0x2dc/0x755 [ 72.829796][T10168] ? add_taint.cold+0x16/0x16 [ 72.834460][T10168] ? rxrpc_unuse_local+0x23/0x70 [ 72.839386][T10168] ? preempt_schedule+0x4b/0x60 [ 72.844236][T10168] ? ___preempt_schedule+0x16/0x20 [ 72.849340][T10168] ? trace_hardirqs_on+0x5e/0x240 [ 72.854344][T10168] ? rxrpc_unuse_local+0x23/0x70 [ 72.859267][T10168] end_report+0x47/0x4f [ 72.863425][T10168] ? rxrpc_unuse_local+0x23/0x70 [ 72.868352][T10168] __kasan_report.cold+0xe/0x36 [ 72.873211][T10168] ? _raw_read_unlock_irqrestore+0xd1/0xe0 [ 72.879086][T10168] ? rxrpc_unuse_local+0x23/0x70 [ 72.884006][T10168] kasan_report+0x12/0x17 [ 72.888320][T10168] check_memory_region+0x134/0x1a0 [ 72.893419][T10168] __kasan_check_write+0x14/0x20 [ 72.898345][T10168] rxrpc_unuse_local+0x23/0x70 [ 72.903482][T10168] rxrpc_release+0x47d/0x840 [ 72.908079][T10168] __sock_release+0xce/0x280 [ 72.912653][T10168] sock_close+0x1e/0x30 [ 72.916792][T10168] __fput+0x2ff/0x890 [ 72.920759][T10168] ? __sock_release+0x280/0x280 [ 72.925595][T10168] ____fput+0x16/0x20 [ 72.929581][T10168] task_work_run+0x145/0x1c0 [ 72.934184][T10168] do_exit+0x92f/0x2e50 [ 72.938330][T10168] ? __sanitizer_cov_trace_cmp1+0x11/0x20 [ 72.944039][T10168] ? mm_update_next_owner+0x640/0x640 [ 72.949396][T10168] ? fd_install+0x4d/0x60 [ 72.953709][T10168] ? __sys_socket+0x180/0x220 [ 72.958392][T10168] ? move_addr_to_kernel+0x80/0x80 [ 72.963492][T10168] ? __ia32_sys_fallocate+0xf0/0xf0 [ 72.968689][T10168] do_group_exit+0x135/0x360 [ 72.973269][T10168] __x64_sys_exit_group+0x44/0x50 [ 72.978282][T10168] do_syscall_64+0xfa/0x760 [ 72.982792][T10168] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 72.988678][T10168] RIP: 0033:0x43ed68 [ 72.992559][T10168] Code: Bad RIP value. [ 72.996601][T10168] RSP: 002b:00007ffead8b2828 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 73.004994][T10168] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 73.013033][T10168] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 73.021004][T10168] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 73.028959][T10168] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 73.036915][T10168] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 73.045910][T10168] Kernel Offset: disabled [ 73.050235][T10168] Rebooting in 86400 seconds..