[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.193' (ECDSA) to the list of known hosts. syzkaller login: [ 75.933592][ T28] audit: type=1400 audit(1598384093.692:8): avc: denied { execmem } for pid=6847 comm="syz-executor093" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 75.963748][ T6856] IPVS: ftp: loaded support on port[0] = 21 [ 75.969656][ T6855] IPVS: ftp: loaded support on port[0] = 21 [ 75.982719][ T6854] IPVS: ftp: loaded support on port[0] = 21 [ 75.990544][ T6857] IPVS: ftp: loaded support on port[0] = 21 [ 75.993793][ T6859] IPVS: ftp: loaded support on port[0] = 21 [ 76.001730][ T6858] IPVS: ftp: loaded support on port[0] = 21 executing program [ 76.141707][ T28] audit: type=1400 audit(1598384093.892:9): avc: denied { block_suspend } for pid=6940 comm="syz-executor093" capability=36 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 94.619355][T16575] ------------[ cut here ]------------ [ 94.625814][T16575] ODEBUG: free active (active state 1) object type: rcu_head hint: 0x0 [ 94.635070][T16575] WARNING: CPU: 0 PID: 16575 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 94.644962][T16575] Kernel panic - not syncing: panic_on_warn set ... [ 94.651551][T16575] CPU: 0 PID: 16575 Comm: syz-executor093 Not tainted 5.9.0-rc2-syzkaller #0 [ 94.660312][T16575] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 94.670542][T16575] Call Trace: [ 94.674464][T16575] dump_stack+0x18f/0x20d [ 94.679668][T16575] panic+0x2e3/0x75c [ 94.683563][T16575] ? __warn_printk+0xf3/0xf3 [ 94.688153][T16575] ? console_unlock+0x7f0/0xf30 [ 94.693008][T16575] ? __warn.cold+0x5/0x4a [ 94.697427][T16575] ? __warn+0xd6/0x1f2 [ 94.701501][T16575] ? debug_print_object+0x160/0x250 [ 94.706702][T16575] __warn.cold+0x20/0x4a [ 94.710970][T16575] ? debug_print_object+0x160/0x250 [ 94.716168][T16575] report_bug+0x1bd/0x210 [ 94.720508][T16575] handle_bug+0x38/0x90 [ 94.724666][T16575] ? __warn_printk+0xc6/0xf3 [ 94.729260][T16575] exc_invalid_op+0x14/0x40 [ 94.733760][T16575] asm_exc_invalid_op+0x12/0x20 [ 94.738610][T16575] RIP: 0010:debug_print_object+0x160/0x250 [ 94.744413][T16575] Code: dd e0 26 94 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd e0 26 94 88 48 c7 c7 40 1c 94 88 e8 d2 36 a6 fd <0f> 0b 83 05 93 4f 13 07 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 94.764013][T16575] RSP: 0018:ffffc9000d1a7dd0 EFLAGS: 00010082 [ 94.770080][T16575] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 94.778053][T16575] RDX: ffff88809a610100 RSI: ffffffff815dafc7 RDI: fffff52001a34fac [ 94.786045][T16575] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ae620f8b [ 94.794017][T16575] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff89bd6780 [ 94.801990][T16575] R13: 0000000000000000 R14: dead000000000100 R15: dffffc0000000000 [ 94.809974][T16575] ? vprintk_func+0x97/0x1a6 [ 94.814564][T16575] debug_check_no_obj_freed+0x301/0x41c [ 94.820114][T16575] kmem_cache_free.part.0+0x16d/0x1f0 [ 94.825487][T16575] task_work_run+0xdd/0x190 [ 94.830001][T16575] exit_to_user_mode_prepare+0x195/0x1c0 [ 94.835640][T16575] syscall_exit_to_user_mode+0x59/0x2b0 [ 94.841199][T16575] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 94.847086][T16575] RIP: 0033:0x446a49 [ 94.850978][T16575] Code: e8 8c e7 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 7b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 94.870581][T16575] RSP: 002b:00007f1dee86adb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 [ 94.878998][T16575] RAX: 0000000000000000 RBX: 00000000006dbc48 RCX: 0000000000446a49 [ 94.886976][T16575] RDX: 0000000000000003 RSI: 0000000000000001 RDI: 0000000000000004 [ 94.894952][T16575] RBP: 00000000006dbc40 R08: 0000000000000000 R09: 0000000000000000 [ 94.903010][T16575] R10: 0000000020000000 R11: 0000000000000246 R12: 00000000006dbc4c [ 94.911072][T16575] R13: 00007ffcd31efe0f R14: 00007f1dee86b9c0 R15: 0000000000000064 [ 94.920639][T16575] Kernel Offset: disabled [ 94.925016][T16575] Rebooting in 86400 seconds..