Starting System Logging Service... [ OK ] Started Daily Cleanup of Temporary Directories. [ OK ] Reached target Timers. Starting OpenBSD Secure Shell server... [ OK ] Started Regular background program processing daemon. [ OK ] Started Permit User Sessions. [ OK ] Started System Logging Service. [ OK ] Found device /dev/ttyS0. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.19' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 66.056073][ T29] audit: type=1400 audit(1593055865.087:8): avc: denied { execmem } for pid=6830 comm="syz-executor583" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 66.059175][ T6830] ------------[ cut here ]------------ [ 66.083067][ T6830] WARNING: CPU: 0 PID: 6830 at lib/idr.c:84 idr_alloc+0x11c/0x130 [ 66.091777][ T6830] Kernel panic - not syncing: panic_on_warn set ... [ 66.098506][ T6830] CPU: 0 PID: 6830 Comm: syz-executor583 Not tainted 5.7.0-syzkaller #0 [ 66.106869][ T6830] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.117500][ T6830] Call Trace: [ 66.120792][ T6830] dump_stack+0x188/0x20d [ 66.125100][ T6830] ? idr_alloc+0x110/0x130 [ 66.129502][ T6830] panic+0x2e3/0x75c [ 66.133412][ T6830] ? add_taint.cold+0x16/0x16 [ 66.138073][ T6830] ? printk+0xba/0xed [ 66.142118][ T6830] ? log_store.cold+0x16/0x16 [ 66.146769][ T6830] ? __warn.cold+0x14/0x35 [ 66.151336][ T6830] ? __warn+0xd5/0x1c8 [ 66.155441][ T6830] ? idr_alloc+0x11c/0x130 [ 66.160450][ T6830] __warn.cold+0x2f/0x35 [ 66.164923][ T6830] ? idr_alloc+0x11c/0x130 [ 66.169592][ T6830] report_bug+0x27b/0x2f0 [ 66.173999][ T6830] do_error_trap+0x12b/0x220 [ 66.178576][ T6830] ? idr_alloc+0x11c/0x130 [ 66.182972][ T6830] do_invalid_op+0x32/0x40 [ 66.188235][ T6830] ? idr_alloc+0x11c/0x130 [ 66.192637][ T6830] invalid_op+0x23/0x30 [ 66.196780][ T6830] RIP: 0010:idr_alloc+0x11c/0x130 [ 66.201779][ T6830] Code: 00 00 00 44 89 e0 48 8b 4c 24 58 65 48 33 0c 25 28 00 00 00 75 1e 48 83 c4 60 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 b4 6d c4 fd <0f> 0b 41 bc ea ff ff ff eb b7 e8 f5 6c 95 fd 0f 1f 44 00 00 41 57 [ 66.221384][ T6830] RSP: 0018:ffffc90001077c68 EFLAGS: 00010293 [ 66.227464][ T6830] RAX: ffff88809f48a580 RBX: 00000000ffff0301 RCX: ffffffff83af606b [ 66.235425][ T6830] RDX: 0000000000000000 RSI: ffffffff83af610c RDI: 0000000000000005 [ 66.243932][ T6830] RBP: 1ffff9200020ef8d R08: ffff88809f48a580 R09: fffffbfff1516d79 [ 66.251882][ T6830] R10: ffffffff8a8b6bc7 R11: fffffbfff1516d78 R12: 00000000ffff0300 [ 66.259833][ T6830] R13: ffffffff8a837ae0 R14: ffff8880a1f7d640 R15: 0000000000000a20 [ 66.268749][ T6830] ? idr_alloc+0x7b/0x130 [ 66.273145][ T6830] ? idr_alloc+0x11c/0x130 [ 66.277549][ T6830] ? idr_alloc+0x11c/0x130 [ 66.282043][ T6830] ? idr_alloc_u32+0x2d0/0x2d0 [ 66.286797][ T6830] ? security_capable+0x8e/0xc0 [ 66.291735][ T6830] __qrtr_bind.isra.0+0x12e/0x5c0 [ 66.296742][ T6830] ? qrtr_release+0x2a0/0x2a0 [ 66.301423][ T6830] ? __local_bh_enable_ip+0x159/0x270 [ 66.306831][ T6830] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 66.312788][ T6830] ? lock_sock_nested+0x94/0x110 [ 66.317703][ T6830] ? lock_sock_nested+0x94/0x110 [ 66.322630][ T6830] qrtr_bind+0x1c1/0x24a [ 66.326863][ T6830] ? security_socket_bind+0x82/0xb0 [ 66.332047][ T6830] __sys_bind+0x20e/0x250 [ 66.336353][ T6830] ? __ia32_sys_socketpair+0xf0/0xf0 [ 66.341624][ T6830] ? down_read_nested+0x420/0x420 [ 66.346624][ T6830] ? vmacache_update+0xce/0x140 [ 66.351493][ T6830] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 66.357110][ T6830] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 66.363252][ T6830] ? do_syscall_64+0x21/0x7d0 [ 66.368004][ T6830] __x64_sys_bind+0x6f/0xb0 [ 66.372571][ T6830] do_syscall_64+0xf6/0x7d0 [ 66.377062][ T6830] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 66.383030][ T6830] RIP: 0033:0x4401a9 [ 66.387076][ T6830] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 66.406744][ T6830] RSP: 002b:00007ffee5bbb0e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000031 [ 66.415322][ T6830] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401a9 [ 66.423450][ T6830] RDX: 000000000000000c RSI: 0000000020000040 RDI: 0000000000000003 [ 66.431490][ T6830] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 66.439467][ T6830] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a30 [ 66.447627][ T6830] R13: 0000000000401ac0 R14: 0000000000000000 R15: 0000000000000000 [ 66.457407][ T6830] Kernel Offset: disabled [ 66.461790][ T6830] Rebooting in 86400 seconds..