[ 70.435302][ T26] audit: type=1800 audit(1565590488.490:27): pid=10096 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 70.461620][ T26] audit: type=1800 audit(1565590488.490:28): pid=10096 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. [ 71.232921][ T26] audit: type=1800 audit(1565590489.350:29): pid=10096 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 [ 71.253716][ T26] audit: type=1800 audit(1565590489.350:30): pid=10096 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 '10.128.0.188' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 91.661540][T10250] ================================================================== [ 91.669645][T10250] BUG: KASAN: null-ptr-deref in rxrpc_unuse_local+0x23/0x70 [ 91.686299][T10250] Write of size 4 at addr 0000000000000010 by task syz-executor766/10250 [ 91.694942][T10250] [ 91.697254][T10250] CPU: 1 PID: 10250 Comm: syz-executor766 Not tainted 5.3.0-rc3-next-20190809 #63 [ 91.706424][T10250] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 91.716845][T10250] Call Trace: [ 91.720608][T10250] dump_stack+0x172/0x1f0 [ 91.725093][T10250] ? rxrpc_unuse_local+0x23/0x70 [ 91.730730][T10250] ? rxrpc_unuse_local+0x23/0x70 [ 91.738610][T10250] __kasan_report.cold+0x5/0x36 [ 91.743639][T10250] ? _raw_read_unlock_irqrestore+0xd1/0xe0 [ 91.749557][T10250] ? rxrpc_unuse_local+0x23/0x70 [ 91.754534][T10250] kasan_report+0x12/0x17 [ 91.759879][T10250] check_memory_region+0x134/0x1a0 [ 91.765158][T10250] __kasan_check_write+0x14/0x20 [ 91.770091][T10250] rxrpc_unuse_local+0x23/0x70 [ 91.774892][T10250] rxrpc_release+0x47d/0x840 [ 91.781620][T10250] __sock_release+0xce/0x280 [ 91.786331][T10250] sock_close+0x1e/0x30 [ 91.790526][T10250] __fput+0x2ff/0x890 [ 91.794678][T10250] ? __sock_release+0x280/0x280 [ 91.799717][T10250] ____fput+0x16/0x20 [ 91.803694][T10250] task_work_run+0x145/0x1c0 [ 91.808424][T10250] do_exit+0x92f/0x2e50 [ 91.812668][T10250] ? __sanitizer_cov_trace_cmp1+0x11/0x20 [ 91.818488][T10250] ? mm_update_next_owner+0x640/0x640 [ 91.824252][T10250] ? fd_install+0x4d/0x60 [ 91.828741][T10250] ? __sys_socket+0x180/0x220 [ 91.833848][T10250] ? move_addr_to_kernel+0x80/0x80 [ 91.839219][T10250] ? __ia32_sys_fallocate+0xf0/0xf0 [ 91.844615][T10250] do_group_exit+0x135/0x360 [ 91.849347][T10250] __x64_sys_exit_group+0x44/0x50 [ 91.854511][T10250] do_syscall_64+0xfa/0x760 [ 91.859174][T10250] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 91.865552][T10250] RIP: 0033:0x43ed68 [ 91.869452][T10250] Code: Bad RIP value. [ 91.873570][T10250] RSP: 002b:00007ffea7a46e88 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 91.882067][T10250] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 91.890142][T10250] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 91.898370][T10250] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 91.906374][T10250] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 91.914522][T10250] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 91.922498][T10250] ================================================================== [ 91.931253][T10250] Kernel panic - not syncing: panic_on_warn set ... [ 91.937856][T10250] CPU: 1 PID: 10250 Comm: syz-executor766 Tainted: G B 5.3.0-rc3-next-20190809 #63 [ 91.948717][T10250] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 91.959344][T10250] Call Trace: [ 91.962638][T10250] dump_stack+0x172/0x1f0 [ 91.967249][T10250] panic+0x2dc/0x755 [ 91.971251][T10250] ? add_taint.cold+0x16/0x16 [ 91.975933][T10250] ? rxrpc_unuse_local+0x23/0x70 [ 91.981957][T10250] ? preempt_schedule+0x4b/0x60 [ 91.986948][T10250] ? ___preempt_schedule+0x16/0x20 [ 91.992919][T10250] ? trace_hardirqs_on+0x5e/0x240 [ 91.998054][T10250] ? rxrpc_unuse_local+0x23/0x70 [ 92.004639][T10250] end_report+0x47/0x4f [ 92.009449][T10250] ? rxrpc_unuse_local+0x23/0x70 [ 92.014402][T10250] __kasan_report.cold+0xe/0x36 [ 92.019327][T10250] ? _raw_read_unlock_irqrestore+0xd1/0xe0 [ 92.025520][T10250] ? rxrpc_unuse_local+0x23/0x70 [ 92.030754][T10250] kasan_report+0x12/0x17 [ 92.037748][T10250] check_memory_region+0x134/0x1a0 [ 92.043156][T10250] __kasan_check_write+0x14/0x20 [ 92.048522][T10250] rxrpc_unuse_local+0x23/0x70 [ 92.053495][T10250] rxrpc_release+0x47d/0x840 [ 92.059577][T10250] __sock_release+0xce/0x280 [ 92.064591][T10250] sock_close+0x1e/0x30 [ 92.068906][T10250] __fput+0x2ff/0x890 [ 92.073075][T10250] ? __sock_release+0x280/0x280 [ 92.078040][T10250] ____fput+0x16/0x20 [ 92.082193][T10250] task_work_run+0x145/0x1c0 [ 92.087425][T10250] do_exit+0x92f/0x2e50 [ 92.091644][T10250] ? __sanitizer_cov_trace_cmp1+0x11/0x20 [ 92.097792][T10250] ? mm_update_next_owner+0x640/0x640 [ 92.105744][T10250] ? fd_install+0x4d/0x60 [ 92.110384][T10250] ? __sys_socket+0x180/0x220 [ 92.116021][T10250] ? move_addr_to_kernel+0x80/0x80 [ 92.125904][T10250] ? __ia32_sys_fallocate+0xf0/0xf0 [ 92.131502][T10250] do_group_exit+0x135/0x360 [ 92.136589][T10250] __x64_sys_exit_group+0x44/0x50 [ 92.141725][T10250] do_syscall_64+0xfa/0x760 [ 92.146244][T10250] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 92.152503][T10250] RIP: 0033:0x43ed68 [ 92.156400][T10250] Code: Bad RIP value. [ 92.160461][T10250] RSP: 002b:00007ffea7a46e88 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 92.168870][T10250] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 92.177024][T10250] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 92.185346][T10250] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 92.193322][T10250] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 92.201292][T10250] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 92.210912][T10250] Kernel Offset: disabled [ 92.215847][T10250] Rebooting in 86400 seconds..