[ 66.766708][ T26] audit: type=1800 audit(1565686423.842:27): pid=9739 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 66.797265][ T26] audit: type=1800 audit(1565686423.842:28): pid=9739 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. [ 67.564740][ T26] audit: type=1800 audit(1565686424.712:29): pid=9739 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 [ 67.584997][ T26] audit: type=1800 audit(1565686424.722:30): pid=9739 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 '10.128.0.241' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 75.451033][ T9894] ================================================================== [ 75.459136][ T9894] BUG: KASAN: null-ptr-deref in rxrpc_unuse_local+0x23/0x70 [ 75.466606][ T9894] Write of size 4 at addr 0000000000000010 by task syz-executor450/9894 [ 75.475191][ T9894] [ 75.477512][ T9894] CPU: 1 PID: 9894 Comm: syz-executor450 Not tainted 5.3.0-rc4-next-20190812+ #64 [ 75.486681][ T9894] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.496819][ T9894] Call Trace: [ 75.500106][ T9894] dump_stack+0x172/0x1f0 [ 75.504498][ T9894] ? rxrpc_unuse_local+0x23/0x70 [ 75.509409][ T9894] ? rxrpc_unuse_local+0x23/0x70 [ 75.514342][ T9894] __kasan_report.cold+0x5/0x36 [ 75.519186][ T9894] ? _raw_spin_unlock_irqrestore+0x11/0xe0 [ 75.525065][ T9894] ? rxrpc_unuse_local+0x23/0x70 [ 75.529984][ T9894] kasan_report+0x12/0x17 [ 75.534294][ T9894] check_memory_region+0x134/0x1a0 [ 75.539398][ T9894] __kasan_check_write+0x14/0x20 [ 75.544441][ T9894] rxrpc_unuse_local+0x23/0x70 [ 75.549192][ T9894] rxrpc_release+0x47d/0x840 [ 75.553759][ T9894] __sock_release+0xce/0x280 [ 75.558331][ T9894] sock_close+0x1e/0x30 [ 75.562501][ T9894] __fput+0x2ff/0x890 [ 75.566464][ T9894] ? __sock_release+0x280/0x280 [ 75.571296][ T9894] ____fput+0x16/0x20 [ 75.575347][ T9894] task_work_run+0x145/0x1c0 [ 75.580001][ T9894] do_exit+0x92f/0x2e50 [ 75.584138][ T9894] ? write_comp_data+0x51/0x70 [ 75.588885][ T9894] ? mm_update_next_owner+0x640/0x640 [ 75.594348][ T9894] ? fd_install+0x4d/0x60 [ 75.598750][ T9894] ? __sys_socket+0x180/0x220 [ 75.603400][ T9894] ? move_addr_to_kernel+0x80/0x80 [ 75.608493][ T9894] ? __ia32_sys_fallocate+0xf0/0xf0 [ 75.613681][ T9894] do_group_exit+0x135/0x360 [ 75.618246][ T9894] __x64_sys_exit_group+0x44/0x50 [ 75.623245][ T9894] do_syscall_64+0xfa/0x760 [ 75.627739][ T9894] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 75.633610][ T9894] RIP: 0033:0x43ed68 [ 75.637492][ T9894] Code: Bad RIP value. [ 75.641540][ T9894] RSP: 002b:00007fffd835f548 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 75.649926][ T9894] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 75.657883][ T9894] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 75.665838][ T9894] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 75.673870][ T9894] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 75.681832][ T9894] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 75.689792][ T9894] ================================================================== [ 75.697954][ T9894] Kernel panic - not syncing: panic_on_warn set ... [ 75.704765][ T9894] CPU: 1 PID: 9894 Comm: syz-executor450 Tainted: G B 5.3.0-rc4-next-20190812+ #64 [ 75.715407][ T9894] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.725553][ T9894] Call Trace: [ 75.728860][ T9894] dump_stack+0x172/0x1f0 [ 75.733258][ T9894] panic+0x2dc/0x755 [ 75.737136][ T9894] ? add_taint.cold+0x16/0x16 [ 75.741882][ T9894] ? rxrpc_unuse_local+0x23/0x70 [ 75.746797][ T9894] ? preempt_schedule+0x4b/0x60 [ 75.751629][ T9894] ? ___preempt_schedule+0x16/0x20 [ 75.756731][ T9894] ? trace_hardirqs_on+0x5e/0x240 [ 75.761748][ T9894] ? rxrpc_unuse_local+0x23/0x70 [ 75.766660][ T9894] end_report+0x47/0x4f [ 75.770795][ T9894] ? rxrpc_unuse_local+0x23/0x70 [ 75.775729][ T9894] __kasan_report.cold+0xe/0x36 [ 75.780563][ T9894] ? _raw_spin_unlock_irqrestore+0x11/0xe0 [ 75.786465][ T9894] ? rxrpc_unuse_local+0x23/0x70 [ 75.791388][ T9894] kasan_report+0x12/0x17 [ 75.795704][ T9894] check_memory_region+0x134/0x1a0 [ 75.800900][ T9894] __kasan_check_write+0x14/0x20 [ 75.805816][ T9894] rxrpc_unuse_local+0x23/0x70 [ 75.810558][ T9894] rxrpc_release+0x47d/0x840 [ 75.815138][ T9894] __sock_release+0xce/0x280 [ 75.819718][ T9894] sock_close+0x1e/0x30 [ 75.824022][ T9894] __fput+0x2ff/0x890 [ 75.828005][ T9894] ? __sock_release+0x280/0x280 [ 75.832834][ T9894] ____fput+0x16/0x20 [ 75.836838][ T9894] task_work_run+0x145/0x1c0 [ 75.841417][ T9894] do_exit+0x92f/0x2e50 [ 75.845548][ T9894] ? write_comp_data+0x51/0x70 [ 75.850303][ T9894] ? mm_update_next_owner+0x640/0x640 [ 75.855652][ T9894] ? fd_install+0x4d/0x60 [ 75.859959][ T9894] ? __sys_socket+0x180/0x220 [ 75.864610][ T9894] ? move_addr_to_kernel+0x80/0x80 [ 75.869701][ T9894] ? __ia32_sys_fallocate+0xf0/0xf0 [ 75.874879][ T9894] do_group_exit+0x135/0x360 [ 75.879565][ T9894] __x64_sys_exit_group+0x44/0x50 [ 75.884850][ T9894] do_syscall_64+0xfa/0x760 [ 75.889352][ T9894] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 75.895338][ T9894] RIP: 0033:0x43ed68 [ 75.899223][ T9894] Code: Bad RIP value. [ 75.903279][ T9894] RSP: 002b:00007fffd835f548 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 75.911686][ T9894] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed68 [ 75.919634][ T9894] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 75.927584][ T9894] RBP: 00000000004be568 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 75.935543][ T9894] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 75.943489][ T9894] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 75.953162][ T9894] Kernel Offset: disabled [ 75.957493][ T9894] Rebooting in 86400 seconds..