Warning: Permanently added '10.128.10.26' (ECDSA) to the list of known hosts. executing program [ 56.215030][ T26] kauditd_printk_skb: 5 callbacks suppressed [ 56.215046][ T26] audit: type=1400 audit(1555806509.585:36): avc: denied { map } for pid=8130 comm="syz-executor700" path="/root/syz-executor700189832" dev="sda1" ino=15903 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 56.254349][ T8131] IPVS: ftp: loaded support on port[0] = 21 [ 56.336315][ T8133] ------------[ cut here ]------------ [ 56.341928][ T8133] percpu_ref_kill_and_confirm called more than once on io_ring_ctx_ref_free! [ 56.342289][ T8133] WARNING: CPU: 0 PID: 8133 at lib/percpu-refcount.c:335 percpu_ref_kill_and_confirm+0x341/0x3b0 [ 56.361484][ T8133] Kernel panic - not syncing: panic_on_warn set ... [ 56.368047][ T8133] CPU: 0 PID: 8133 Comm: syz-executor700 Not tainted 5.1.0-rc5+ #77 [ 56.375993][ T8133] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.386035][ T8133] Call Trace: [ 56.389334][ T8133] dump_stack+0x172/0x1f0 [ 56.393662][ T8133] ? percpu_ref_kill_and_confirm+0x340/0x3b0 [ 56.399721][ T8133] panic+0x2cb/0x65c [ 56.403598][ T8133] ? __warn_printk+0xf3/0xf3 [ 56.408174][ T8133] ? percpu_ref_kill_and_confirm+0x341/0x3b0 [ 56.414146][ T8133] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.420370][ T8133] ? __warn.cold+0x5/0x45 [ 56.424679][ T8133] ? __warn+0xe8/0x1d0 [ 56.428731][ T8133] ? percpu_ref_kill_and_confirm+0x341/0x3b0 [ 56.434717][ T8133] __warn.cold+0x20/0x45 [ 56.438957][ T8133] ? vprintk_emit+0x1ce/0x6d0 [ 56.443626][ T8133] ? percpu_ref_kill_and_confirm+0x341/0x3b0 [ 56.449616][ T8133] report_bug+0x263/0x2b0 [ 56.453939][ T8133] do_error_trap+0x11b/0x200 [ 56.458509][ T8133] do_invalid_op+0x37/0x50 [ 56.462904][ T8133] ? percpu_ref_kill_and_confirm+0x341/0x3b0 [ 56.468867][ T8133] invalid_op+0x14/0x20 [ 56.473005][ T8133] RIP: 0010:percpu_ref_kill_and_confirm+0x341/0x3b0 [ 56.479600][ T8133] Code: 42 e0 2a 06 01 48 89 fa 48 c1 ea 03 80 3c 02 00 75 76 49 8b 54 24 10 48 c7 c6 a0 71 a1 87 48 c7 c7 40 71 a1 87 e8 ad 92 13 fe <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 [ 56.499191][ T8133] RSP: 0018:ffff888096147cf0 EFLAGS: 00010082 [ 56.505241][ T8133] RAX: 0000000000000000 RBX: 0000607f5144093b RCX: 0000000000000000 [ 56.513186][ T8133] RDX: 0000000000000000 RSI: ffffffff815afcf6 RDI: ffffed1012c28f90 [ 56.521139][ T8133] RBP: ffff888096147d20 R08: ffff88808f4a85c0 R09: fffffbfff1133639 [ 56.529107][ T8133] R10: fffffbfff1133638 R11: ffffffff8899b1c3 R12: ffff888084dd54c0 [ 56.537054][ T8133] R13: ffff888084dd54c8 R14: 0000000000000286 R15: 0000000000000000 [ 56.545023][ T8133] ? vprintk_func+0x86/0x189 [ 56.549598][ T8133] __io_uring_register+0xa7/0x1fe0 [ 56.554687][ T8133] ? __mutex_lock+0x3cd/0x1310 [ 56.559432][ T8133] ? __x64_sys_io_uring_register+0x182/0x1f0 [ 56.565407][ T8133] ? mutex_trylock+0x1e0/0x1e0 [ 56.570151][ T8133] ? io_sq_wq_submit_work+0x10f0/0x10f0 [ 56.575692][ T8133] ? kasan_check_write+0x14/0x20 [ 56.580618][ T8133] __x64_sys_io_uring_register+0x193/0x1f0 [ 56.586408][ T8133] do_syscall_64+0x103/0x610 [ 56.590982][ T8133] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 56.596852][ T8133] RIP: 0033:0x4469a9 [ 56.600724][ T8133] Code: e8 8c 19 03 00 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 0c fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 56.620318][ T8133] RSP: 002b:00007f3371971db8 EFLAGS: 00000246 ORIG_RAX: 00000000000001ab [ 56.628712][ T8133] RAX: ffffffffffffffda RBX: 00000000006dcc38 RCX: 00000000004469a9 [ 56.636665][ T8133] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000003 [ 56.644619][ T8133] RBP: 00000000006dcc30 R08: 00007f3371972700 R09: 0000000000000000 [ 56.652598][ T8133] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc3c [ 56.660553][ T8133] R13: 00007fff88221a2f R14: 00007f33719729c0 R15: 0000000000000001 [ 56.669467][ T8133] Kernel Offset: disabled [ 56.673871][ T8133] Rebooting in 86400 seconds..