[ 73.744616][ T26] audit: type=1800 audit(1565531009.703:26): pid=10301 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 73.782979][ T26] audit: type=1800 audit(1565531009.703:27): pid=10301 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 73.803620][ T26] audit: type=1800 audit(1565531009.713:28): pid=10301 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. [ 74.448299][ T26] audit: type=1800 audit(1565531010.443:29): pid=10301 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.108' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 84.365428][T10456] ================================================================== [ 84.373558][T10456] BUG: KASAN: null-ptr-deref in rxrpc_unuse_local+0x23/0x70 [ 84.380831][T10456] Write of size 4 at addr 0000000000000010 by task syz-executor647/10456 [ 84.389219][T10456] [ 84.391540][T10456] CPU: 1 PID: 10456 Comm: syz-executor647 Not tainted 5.3.0-rc3-next-20190809 #63 [ 84.400714][T10456] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 84.410763][T10456] Call Trace: [ 84.414053][T10456] dump_stack+0x172/0x1f0 [ 84.418377][T10456] ? rxrpc_unuse_local+0x23/0x70 [ 84.423308][T10456] ? rxrpc_unuse_local+0x23/0x70 [ 84.428246][T10456] __kasan_report.cold+0x5/0x36 [ 84.433114][T10456] ? _raw_read_unlock_irqrestore+0xd1/0xe0 [ 84.438915][T10456] ? rxrpc_unuse_local+0x23/0x70 [ 84.443874][T10456] kasan_report+0x12/0x17 [ 84.448198][T10456] check_memory_region+0x134/0x1a0 [ 84.453303][T10456] __kasan_check_write+0x14/0x20 [ 84.458231][T10456] rxrpc_unuse_local+0x23/0x70 [ 84.463097][T10456] rxrpc_release+0x47d/0x840 [ 84.467683][T10456] __sock_release+0xce/0x280 [ 84.472253][T10456] sock_close+0x1e/0x30 [ 84.476411][T10456] __fput+0x2ff/0x890 [ 84.480371][T10456] ? __sock_release+0x280/0x280 [ 84.485204][T10456] ____fput+0x16/0x20 [ 84.489187][T10456] task_work_run+0x145/0x1c0 [ 84.493762][T10456] do_exit+0x92f/0x2e50 [ 84.497900][T10456] ? __sanitizer_cov_trace_cmp1+0x11/0x20 [ 84.503596][T10456] ? mm_update_next_owner+0x640/0x640 [ 84.508956][T10456] ? fd_install+0x4d/0x60 [ 84.513259][T10456] ? __sys_socket+0x180/0x220 [ 84.517935][T10456] ? move_addr_to_kernel+0x80/0x80 [ 84.523043][T10456] ? __ia32_sys_fallocate+0xf0/0xf0 [ 84.528257][T10456] do_group_exit+0x135/0x360 [ 84.532847][T10456] __x64_sys_exit_group+0x44/0x50 [ 84.537863][T10456] do_syscall_64+0xfa/0x760 [ 84.542685][T10456] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 84.548557][T10456] RIP: 0033:0x43ed68 [ 84.552438][T10456] Code: Bad RIP value. [ 84.556481][T10456] RSP: 002b:00007ffefe9449d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 84.564868][T10456] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 84.572835][T10456] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 84.580810][T10456] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 84.588769][T10456] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 84.596743][T10456] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 84.604715][T10456] ================================================================== [ 84.613900][T10456] Kernel panic - not syncing: panic_on_warn set ... [ 84.620511][T10456] CPU: 1 PID: 10456 Comm: syz-executor647 Tainted: G B 5.3.0-rc3-next-20190809 #63 [ 84.631071][T10456] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 84.641215][T10456] Call Trace: [ 84.644503][T10456] dump_stack+0x172/0x1f0 [ 84.648832][T10456] panic+0x2dc/0x755 [ 84.652707][T10456] ? add_taint.cold+0x16/0x16 [ 84.657364][T10456] ? rxrpc_unuse_local+0x23/0x70 [ 84.662290][T10456] ? preempt_schedule+0x4b/0x60 [ 84.667127][T10456] ? ___preempt_schedule+0x16/0x20 [ 84.672221][T10456] ? trace_hardirqs_on+0x5e/0x240 [ 84.677224][T10456] ? rxrpc_unuse_local+0x23/0x70 [ 84.682161][T10456] end_report+0x47/0x4f [ 84.686295][T10456] ? rxrpc_unuse_local+0x23/0x70 [ 84.691211][T10456] __kasan_report.cold+0xe/0x36 [ 84.696082][T10456] ? _raw_read_unlock_irqrestore+0xd1/0xe0 [ 84.701881][T10456] ? rxrpc_unuse_local+0x23/0x70 [ 84.706811][T10456] kasan_report+0x12/0x17 [ 84.711135][T10456] check_memory_region+0x134/0x1a0 [ 84.716243][T10456] __kasan_check_write+0x14/0x20 [ 84.721172][T10456] rxrpc_unuse_local+0x23/0x70 [ 84.725930][T10456] rxrpc_release+0x47d/0x840 [ 84.730525][T10456] __sock_release+0xce/0x280 [ 84.735114][T10456] sock_close+0x1e/0x30 [ 84.739266][T10456] __fput+0x2ff/0x890 [ 84.743246][T10456] ? __sock_release+0x280/0x280 [ 84.748096][T10456] ____fput+0x16/0x20 [ 84.752106][T10456] task_work_run+0x145/0x1c0 [ 84.756721][T10456] do_exit+0x92f/0x2e50 [ 84.760898][T10456] ? __sanitizer_cov_trace_cmp1+0x11/0x20 [ 84.766659][T10456] ? mm_update_next_owner+0x640/0x640 [ 84.772070][T10456] ? fd_install+0x4d/0x60 [ 84.776396][T10456] ? __sys_socket+0x180/0x220 [ 84.781072][T10456] ? move_addr_to_kernel+0x80/0x80 [ 84.786178][T10456] ? __ia32_sys_fallocate+0xf0/0xf0 [ 84.791382][T10456] do_group_exit+0x135/0x360 [ 84.795984][T10456] __x64_sys_exit_group+0x44/0x50 [ 84.801012][T10456] do_syscall_64+0xfa/0x760 [ 84.805519][T10456] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 84.811410][T10456] RIP: 0033:0x43ed68 [ 84.815301][T10456] Code: Bad RIP value. [ 84.819355][T10456] RSP: 002b:00007ffefe9449d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 84.827757][T10456] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 84.835750][T10456] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 84.843719][T10456] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 84.851843][T10456] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 84.859810][T10456] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 84.868986][T10456] Kernel Offset: disabled [ 84.873350][T10456] Rebooting in 86400 seconds..