Warning: Permanently added '10.128.0.66' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 51.907753] kasan: CONFIG_KASAN_INLINE enabled [ 51.913122] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 51.920573] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 51.926803] CPU: 1 PID: 5670 Comm: syz-executor439 Not tainted 4.20.0-rc1-next-20181107+ #107 [ 51.935630] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.944987] RIP: 0010:__x86_indirect_thunk_rbx+0x10/0x20 [ 51.950426] Code: 90 0f ae e8 eb f9 48 89 04 24 c3 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 e8 07 00 00 00 f3 90 0f ae e8 eb f9 48 89 1c 24 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 e8 07 00 00 00 f3 [ 51.969311] RSP: 0018:ffff8801d89af2b0 EFLAGS: 00010293 [ 51.974657] RAX: ffff8801d49723c0 RBX: 894cdffffc000000 RCX: ffffffff81ed555d [ 51.981912] RDX: 0000000000000000 RSI: ffffffff81ed5c9e RDI: ffff8801d89af338 [ 51.989163] RBP: ffff8801d89af4a0 R08: ffff8801d49723c0 R09: ffffed003b5e5b67 [ 51.996423] R10: ffffed003b5e5b67 R11: ffff8801daf2db3b R12: ffff8801d798da00 [ 52.003684] R13: ffff8801d89af338 R14: 1ffff1003b135e5b R15: dffffc0000000000 [ 52.010937] FS: 0000000001292880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 52.019142] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.025108] CR2: 0000000020e2aff8 CR3: 000000000946a000 CR4: 00000000001406e0 [ 52.032381] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.039643] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.047009] Call Trace: [ 52.049595] ? locks_remove_flock+0x236/0x350 [ 52.054423] ? flock_lock_inode+0x11c0/0x11c0 [ 52.058909] ? mark_held_locks+0x130/0x130 [ 52.063126] ? unwind_dump+0x190/0x190 [ 52.066998] ? is_bpf_text_address+0xd3/0x170 [ 52.071478] ? kernel_text_address+0x79/0xf0 [ 52.075876] ? __kernel_text_address+0xd/0x40 [ 52.080355] ? unwind_get_return_address+0x61/0xa0 [ 52.085273] ? __save_stack_trace+0x8d/0xf0 [ 52.089578] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.095282] locks_remove_file+0x148/0x5c0 [ 52.099538] ? fcntl_setlk+0xfc0/0xfc0 [ 52.103482] ? fsnotify_first_mark+0x350/0x350 [ 52.108077] ? __fsnotify_parent+0xcc/0x420 [ 52.112393] ? perf_trace_sched_process_exec+0x860/0x860 [ 52.117843] ? fsnotify+0xf20/0xf20 [ 52.121461] ? __might_sleep+0x95/0x190 [ 52.125426] __fput+0x2f0/0xa70 [ 52.128707] ? get_max_files+0x20/0x20 [ 52.132590] ? trace_hardirqs_on+0xbd/0x310 [ 52.136901] ? kasan_check_read+0x11/0x20 [ 52.141157] ? task_work_run+0x1af/0x2a0 [ 52.145206] ? trace_hardirqs_off_caller+0x300/0x300 [ 52.150364] ____fput+0x15/0x20 [ 52.153639] task_work_run+0x1e8/0x2a0 [ 52.157518] ? task_work_cancel+0x240/0x240 [ 52.161832] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 52.167358] ? switch_task_namespaces+0x9d/0xd0 [ 52.172015] do_exit+0x1ad1/0x26d0 [ 52.175543] ? lock_downgrade+0x900/0x900 [ 52.179680] ? check_preemption_disabled+0x48/0x280 [ 52.184679] ? rcu_read_unlock_special+0x181/0x1c0 [ 52.189596] ? mm_update_next_owner+0x990/0x990 [ 52.194261] ? rcu_softirq_qs+0x20/0x20 [ 52.198235] ? rcu_softirq_qs+0x20/0x20 [ 52.202208] ? unwind_dump+0x190/0x190 [ 52.206179] ? is_bpf_text_address+0xd3/0x170 [ 52.210660] ? kernel_text_address+0x79/0xf0 [ 52.215056] ? __kernel_text_address+0xd/0x40 [ 52.219532] ? unwind_get_return_address+0x61/0xa0 [ 52.224448] ? __save_stack_trace+0x8d/0xf0 [ 52.228788] ? save_stack+0xa9/0xd0 [ 52.232607] ? save_stack+0x43/0xd0 [ 52.236229] ? __kasan_slab_free+0x102/0x150 [ 52.240625] ? kasan_slab_free+0xe/0x10 [ 52.244580] ? kmem_cache_free+0x83/0x290 [ 52.248719] ? locks_free_lock+0x295/0x420 [ 52.252940] ? __x64_sys_flock+0x289/0x350 [ 52.257159] ? do_syscall_64+0x1b9/0x820 [ 52.261211] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.266561] ? trace_hardirqs_off+0xb8/0x310 [ 52.270953] ? kasan_check_read+0x11/0x20 [ 52.275084] ? do_raw_spin_unlock+0xa7/0x330 [ 52.279476] ? trace_hardirqs_off+0xb8/0x310 [ 52.283868] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.289385] ? check_preemption_disabled+0x48/0x280 [ 52.294386] ? rcu_lockdep_current_cpu_online+0x1a4/0x210 [ 52.299905] ? rcu_pm_notify+0xc0/0xc0 [ 52.303778] ? locks_free_lock+0x295/0x420 [ 52.307994] ? locks_free_lock+0x295/0x420 [ 52.312211] ? rcu_read_lock_sched_held+0x14f/0x180 [ 52.317205] ? kmem_cache_free+0x24f/0x290 [ 52.321431] ? locks_free_lock+0x295/0x420 [ 52.325703] ? leases_conflict+0x190/0x190 [ 52.329934] ? locks_mandatory_area+0x6a0/0x6a0 [ 52.334595] ? apparmor_path_rmdir+0x30/0x30 [ 52.338992] do_group_exit+0x177/0x440 [ 52.342868] ? trace_hardirqs_on+0xbd/0x310 [ 52.347172] ? __ia32_sys_exit+0x50/0x50 [ 52.351217] ? trace_hardirqs_off_caller+0x300/0x300 [ 52.356309] __x64_sys_exit_group+0x3e/0x50 [ 52.360613] do_syscall_64+0x1b9/0x820 [ 52.364485] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 52.369831] ? syscall_return_slowpath+0x5e0/0x5e0 [ 52.374891] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 52.379919] ? trace_hardirqs_on_caller+0x310/0x310 [ 52.384945] ? prepare_exit_to_usermode+0x291/0x3b0 [ 52.392764] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 52.397610] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.402783] RIP: 0033:0x43ec48 [ 52.405975] Code: Bad RIP value. [ 52.409321] RSP: 002b:00007fff104a8308 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 52.417010] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ec48 [ 52.424344] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 52.431710] RBP: 00000000004be508 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 52.438977] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 52.446237] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 52.453585] Modules linked in: [ 52.457384] ---[ end trace db9bef1a2174e463 ]--- [ 52.462348] RIP: 0010:__x86_indirect_thunk_rbx+0x10/0x20 [ 52.467786] Code: 90 0f ae e8 eb f9 48 89 04 24 c3 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 e8 07 00 00 00 f3 90 0f ae e8 eb f9 48 89 1c 24 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 e8 07 00 00 00 f3 [ 52.486966] RSP: 0018:ffff8801d89af2b0 EFLAGS: 00010293 [ 52.492409] RAX: ffff8801d49723c0 RBX: 894cdffffc000000 RCX: ffffffff81ed555d [ 52.499674] RDX: 0000000000000000 RSI: ffffffff81ed5c9e RDI: ffff8801d89af338 [ 52.506997] RBP: ffff8801d89af4a0 R08: ffff8801d49723c0 R09: ffffed003b5e5b67 [ 52.514416] R10: ffffed003b5e5b67 R11: ffff8801daf2db3b R12: ffff8801d798da00 [ 52.521806] R13: ffff8801d89af338 R14: 1ffff1003b135e5b R15: dffffc0000000000 [ 52.529078] FS: 0000000001292880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 52.537347] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.543267] CR2: 000000000043ec1e CR3: 000000000946a000 CR4: 00000000001406e0 [ 52.550560] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.557825] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.565138] Kernel panic - not syncing: Fatal exception [ 52.571795] Kernel Offset: disabled [ 52.575422] Rebooting in 86400 seconds..