[ 62.850283][ T26] audit: type=1800 audit(1565541403.619:27): pid=9779 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 62.893759][ T26] audit: type=1800 audit(1565541403.619:28): pid=9779 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. [ 63.495382][ T26] audit: type=1800 audit(1565541404.309:29): pid=9779 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 [ 63.515542][ T26] audit: type=1800 audit(1565541404.309:30): pid=9779 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 '10.128.0.167' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 74.288947][ T9934] ================================================================== [ 74.297185][ T9934] BUG: KASAN: null-ptr-deref in rxrpc_unuse_local+0x23/0x70 [ 74.304567][ T9934] Write of size 4 at addr 0000000000000010 by task syz-executor531/9934 [ 74.312964][ T9934] [ 74.315278][ T9934] CPU: 0 PID: 9934 Comm: syz-executor531 Not tainted 5.3.0-rc3+ #157 [ 74.323320][ T9934] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.333666][ T9934] Call Trace: [ 74.336958][ T9934] dump_stack+0x172/0x1f0 [ 74.341479][ T9934] ? rxrpc_unuse_local+0x23/0x70 [ 74.346552][ T9934] ? rxrpc_unuse_local+0x23/0x70 [ 74.351474][ T9934] __kasan_report.cold+0x5/0x36 [ 74.356309][ T9934] ? _raw_read_unlock_irqrestore+0xc1/0xe0 [ 74.362175][ T9934] ? rxrpc_unuse_local+0x23/0x70 [ 74.367109][ T9934] kasan_report+0x12/0x17 [ 74.371421][ T9934] check_memory_region+0x134/0x1a0 [ 74.376624][ T9934] __kasan_check_write+0x14/0x20 [ 74.381563][ T9934] rxrpc_unuse_local+0x23/0x70 [ 74.386383][ T9934] rxrpc_release+0x47d/0x840 [ 74.391156][ T9934] __sock_release+0xce/0x280 [ 74.395736][ T9934] sock_close+0x1e/0x30 [ 74.399868][ T9934] __fput+0x2ff/0x890 [ 74.403837][ T9934] ? __sock_release+0x280/0x280 [ 74.408678][ T9934] ____fput+0x16/0x20 [ 74.412647][ T9934] task_work_run+0x145/0x1c0 [ 74.417235][ T9934] do_exit+0x92f/0x2e50 [ 74.421438][ T9934] ? __sanitizer_cov_trace_const_cmp4+0x1/0x20 [ 74.427780][ T9934] ? mm_update_next_owner+0x640/0x640 [ 74.433314][ T9934] ? fd_install+0x4d/0x60 [ 74.437683][ T9934] ? __sys_socket+0x180/0x220 [ 74.442412][ T9934] ? move_addr_to_kernel+0x80/0x80 [ 74.447506][ T9934] ? __ia32_sys_fallocate+0xf0/0xf0 [ 74.452693][ T9934] do_group_exit+0x135/0x360 [ 74.457274][ T9934] __x64_sys_exit_group+0x44/0x50 [ 74.462356][ T9934] do_syscall_64+0xfd/0x6a0 [ 74.466860][ T9934] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 74.472805][ T9934] RIP: 0033:0x43ed68 [ 74.476685][ T9934] Code: Bad RIP value. [ 74.480729][ T9934] RSP: 002b:00007ffe6a13a078 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 74.489128][ T9934] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 74.497078][ T9934] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 74.505028][ T9934] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 74.513148][ T9934] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 74.521108][ T9934] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 74.529065][ T9934] ================================================================== [ 74.537926][ T9934] Kernel panic - not syncing: panic_on_warn set ... [ 74.544529][ T9934] CPU: 1 PID: 9934 Comm: syz-executor531 Tainted: G B 5.3.0-rc3+ #157 [ 74.554064][ T9934] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.564209][ T9934] Call Trace: [ 74.567606][ T9934] dump_stack+0x172/0x1f0 [ 74.571921][ T9934] panic+0x2dc/0x755 [ 74.575794][ T9934] ? add_taint.cold+0x16/0x16 [ 74.580450][ T9934] ? rxrpc_unuse_local+0x23/0x70 [ 74.585365][ T9934] ? preempt_schedule+0x4b/0x60 [ 74.590300][ T9934] ? ___preempt_schedule+0x16/0x20 [ 74.595659][ T9934] ? trace_hardirqs_on+0x5e/0x240 [ 74.600665][ T9934] ? rxrpc_unuse_local+0x23/0x70 [ 74.605580][ T9934] end_report+0x47/0x4f [ 74.609708][ T9934] ? rxrpc_unuse_local+0x23/0x70 [ 74.614678][ T9934] __kasan_report.cold+0xe/0x36 [ 74.619537][ T9934] ? _raw_read_unlock_irqrestore+0xc1/0xe0 [ 74.625450][ T9934] ? rxrpc_unuse_local+0x23/0x70 [ 74.630375][ T9934] kasan_report+0x12/0x17 [ 74.634687][ T9934] check_memory_region+0x134/0x1a0 [ 74.639794][ T9934] __kasan_check_write+0x14/0x20 [ 74.644799][ T9934] rxrpc_unuse_local+0x23/0x70 [ 74.649559][ T9934] rxrpc_release+0x47d/0x840 [ 74.654135][ T9934] __sock_release+0xce/0x280 [ 74.658724][ T9934] sock_close+0x1e/0x30 [ 74.662968][ T9934] __fput+0x2ff/0x890 [ 74.667002][ T9934] ? __sock_release+0x280/0x280 [ 74.671842][ T9934] ____fput+0x16/0x20 [ 74.675871][ T9934] task_work_run+0x145/0x1c0 [ 74.680460][ T9934] do_exit+0x92f/0x2e50 [ 74.684723][ T9934] ? __sanitizer_cov_trace_const_cmp4+0x1/0x20 [ 74.690983][ T9934] ? mm_update_next_owner+0x640/0x640 [ 74.696423][ T9934] ? fd_install+0x4d/0x60 [ 74.700751][ T9934] ? __sys_socket+0x180/0x220 [ 74.705410][ T9934] ? move_addr_to_kernel+0x80/0x80 [ 74.710610][ T9934] ? __ia32_sys_fallocate+0xf0/0xf0 [ 74.715805][ T9934] do_group_exit+0x135/0x360 [ 74.720371][ T9934] __x64_sys_exit_group+0x44/0x50 [ 74.725562][ T9934] do_syscall_64+0xfd/0x6a0 [ 74.730048][ T9934] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 74.735922][ T9934] RIP: 0033:0x43ed68 [ 74.739795][ T9934] 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 [ 74.759609][ T9934] RSP: 002b:00007ffe6a13a078 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 74.768016][ T9934] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 74.776082][ T9934] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 74.784119][ T9934] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 74.792092][ T9934] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 74.800044][ T9934] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 74.809275][ T9934] Kernel Offset: disabled [ 74.813603][ T9934] Rebooting in 86400 seconds..