[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 19.419316] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 23.694869] random: sshd: uninitialized urandom read (32 bytes read) [ 23.927726] random: sshd: uninitialized urandom read (32 bytes read) [ 24.712664] random: sshd: uninitialized urandom read (32 bytes read) [ 94.141679] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.0' (ECDSA) to the list of known hosts. [ 99.606742] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 112.122980] ================================================================== [ 112.130546] BUG: KASAN: use-after-free in bpf_tcp_close+0x6f5/0xf80 [ 112.137311] Write of size 8 at addr ffff8801ca277680 by task syz-executor749/9723 [ 112.144928] [ 112.146564] CPU: 0 PID: 9723 Comm: syz-executor749 Not tainted 4.17.0-rc4+ #19 [ 112.153921] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 112.163276] Call Trace: [ 112.165872] dump_stack+0x1b9/0x294 [ 112.169514] ? dump_stack_print_info.cold.2+0x52/0x52 [ 112.174718] ? printk+0x9e/0xba [ 112.178012] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 112.182779] ? kasan_check_write+0x14/0x20 [ 112.187030] print_address_description+0x6c/0x20b [ 112.191885] ? bpf_tcp_close+0x6f5/0xf80 [ 112.195956] kasan_report.cold.7+0x242/0x2fe [ 112.200372] check_memory_region+0x13e/0x1b0 [ 112.204801] kasan_check_write+0x14/0x20 [ 112.208871] bpf_tcp_close+0x6f5/0xf80 [ 112.212767] ? tcp_check_oom+0x520/0x520 [ 112.216835] ? lock_downgrade+0x8e0/0x8e0 [ 112.220994] ? sock_hash_free+0x6e0/0x6e0 [ 112.225148] ? kasan_check_read+0x11/0x20 [ 112.229303] ? rcu_is_watching+0x85/0x140 [ 112.233463] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 112.238665] ? kasan_check_read+0x11/0x20 [ 112.242816] ? rcu_is_watching+0x85/0x140 [ 112.246977] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 112.252551] ? ipv6_sock_ac_close+0x34e/0x480 [ 112.257060] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 112.262603] ? ipv6_sock_mc_close+0x161/0x1c0 [ 112.267105] ? ip_mc_drop_socket+0x20f/0x270 [ 112.271521] inet_release+0x104/0x1f0 [ 112.275330] inet6_release+0x50/0x70 [ 112.279050] sock_release+0x96/0x1b0 [ 112.282782] ? sock_alloc_file+0x4e0/0x4e0 [ 112.287034] sock_close+0x16/0x20 [ 112.290496] __fput+0x34d/0x890 [ 112.293791] ? fput+0x1a0/0x1a0 [ 112.297079] ? check_same_owner+0x320/0x320 [ 112.301409] ? _raw_spin_unlock_irq+0x27/0x70 [ 112.305925] ____fput+0x15/0x20 [ 112.309222] task_work_run+0x1e4/0x290 [ 112.313121] ? task_work_cancel+0x240/0x240 [ 112.317456] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 112.323000] ? switch_task_namespaces+0xa2/0xd0 [ 112.327684] do_exit+0x1aee/0x2730 [ 112.331272] ? mm_update_next_owner+0x980/0x980 [ 112.335944] ? lock_downgrade+0x8e0/0x8e0 [ 112.340108] ? kasan_check_read+0x11/0x20 [ 112.344261] ? rcu_is_watching+0x85/0x140 [ 112.348424] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 112.353622] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 112.358822] ? is_bpf_text_address+0xd7/0x170 [ 112.363330] ? kernel_text_address+0x79/0xf0 [ 112.367747] ? __unwind_start+0x166/0x330 [ 112.371899] ? __kernel_text_address+0xd/0x40 [ 112.376406] ? unwind_get_return_address+0x61/0xa0 [ 112.381359] ? save_stack+0xa9/0xd0 [ 112.384996] ? save_stack+0x43/0xd0 [ 112.388629] ? __kasan_slab_free+0x11a/0x170 [ 112.393038] ? kasan_slab_free+0xe/0x10 [ 112.397033] ? kfree+0xd9/0x260 [ 112.400320] ? map_update_elem+0x650/0xc90 [ 112.404571] ? __x64_sys_bpf+0x32a/0x4f0 [ 112.408639] ? do_syscall_64+0x1b1/0x800 [ 112.412708] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 112.418081] ? kasan_check_read+0x11/0x20 [ 112.422235] ? do_raw_spin_unlock+0x9e/0x2e0 [ 112.426653] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 112.431246] ? kasan_check_write+0x14/0x20 [ 112.435488] ? do_raw_spin_lock+0xc1/0x200 [ 112.439732] ? trace_hardirqs_off+0xd/0x10 [ 112.443973] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 112.449084] ? debug_check_no_obj_freed+0x2ff/0x584 [ 112.454120] ? trace_hardirqs_off+0xd/0x10 [ 112.458358] ? quarantine_put+0xeb/0x190 [ 112.462434] ? kfree+0x111/0x260 [ 112.465804] ? map_update_elem+0x650/0xc90 [ 112.470044] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 112.475067] ? trace_hardirqs_on+0xd/0x10 [ 112.479227] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 112.484765] ? map_update_elem+0x127/0xc90 [ 112.489012] do_group_exit+0x16f/0x430 [ 112.492903] ? bpf_prog_get+0x20/0x20 [ 112.496711] ? __ia32_sys_exit+0x50/0x50 [ 112.500783] ? do_syscall_64+0x92/0x800 [ 112.504768] __x64_sys_exit_group+0x3e/0x50 [ 112.509098] do_syscall_64+0x1b1/0x800 [ 112.513258] ? syscall_return_slowpath+0x5c0/0x5c0 [ 112.518194] ? syscall_return_slowpath+0x30f/0x5c0 [ 112.523132] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 112.528505] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 112.533367] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 112.538562] RIP: 0033:0x440a59 [ 112.541750] RSP: 002b:00007ffdadf92488 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7 [ 112.549464] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440a59 [ 112.556738] RDX: 0000000000440a59 RSI: 0000000000000020 RDI: 0000000000000000 [ 112.564039] RBP: 0000000000000000 R08: 00000000004002c8 R09: 0000000000401ea0 [ 112.571310] R10: 00000000004002c8 R11: 0000000000000206 R12: 000000000001b5ac [ 112.578583] R13: 0000000000401ea0 R14: 0000000000000000 R15: 0000000000000000 [ 112.585862] [ 112.587490] Allocated by task 9723: [ 112.591125] save_stack+0x43/0xd0 [ 112.594598] kasan_kmalloc+0xc4/0xe0 [ 112.598325] __kmalloc_node+0x47/0x70 [ 112.602132] bpf_map_area_alloc+0x3f/0x90 [ 112.606286] sock_map_alloc+0x376/0x410 [ 112.610263] map_create+0x393/0x1010 [ 112.613984] __x64_sys_bpf+0x300/0x4f0 [ 112.617874] do_syscall_64+0x1b1/0x800 [ 112.621765] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 112.626942] [ 112.628564] Freed by task 4521: [ 112.631854] save_stack+0x43/0xd0 [ 112.635313] __kasan_slab_free+0x11a/0x170 [ 112.639546] kasan_slab_free+0xe/0x10 [ 112.643348] kfree+0xd9/0x260 [ 112.646461] kvfree+0x61/0x70 [ 112.649571] bpf_map_area_free+0x15/0x20 [ 112.653638] sock_map_free+0x408/0x540 [ 112.657528] bpf_map_free_deferred+0xba/0xf0 [ 112.661944] process_one_work+0xc1e/0x1b50 [ 112.666191] worker_thread+0x1cc/0x1440 [ 112.670167] kthread+0x345/0x410 [ 112.673540] ret_from_fork+0x3a/0x50 [ 112.677242] [ 112.678871] The buggy address belongs to the object at ffff8801ca277680 [ 112.678871] which belongs to the cache kmalloc-1024 of size 1024 [ 112.691708] The buggy address is located 0 bytes inside of [ 112.691708] 1024-byte region [ffff8801ca277680, ffff8801ca277a80) [ 112.703494] The buggy address belongs to the page: [ 112.708429] page:ffffea0007289d80 count:1 mapcount:0 mapping:ffff8801ca276000 index:0x0 compound_mapcount: 0 [ 112.718413] flags: 0x2fffc0000008100(slab|head) [ 112.723355] raw: 02fffc0000008100 ffff8801ca276000 0000000000000000 0000000100000007 [ 112.731246] raw: ffffea0006d12b20 ffffea000763bba0 ffff8801da800ac0 0000000000000000 [ 112.739122] page dumped because: kasan: bad access detected [ 112.744912] [ 112.746536] Memory state around the buggy address: [ 112.751467] ffff8801ca277580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 112.758827] ffff8801ca277600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 112.766191] >ffff8801ca277680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 112.773546] ^ [ 112.776914] ffff8801ca277700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 112.784275] ffff8801ca277780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 112.791628] ================================================================== [ 112.798983] Disabling lock debugging due to kernel taint [ 112.804484] Kernel panic - not syncing: panic_on_warn set ... [ 112.804484] [ 112.811853] CPU: 0 PID: 9723 Comm: syz-executor749 Tainted: G B 4.17.0-rc4+ #19 [ 112.820593] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 112.830024] Call Trace: [ 112.832612] dump_stack+0x1b9/0x294 [ 112.836242] ? dump_stack_print_info.cold.2+0x52/0x52 [ 112.841437] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 112.846200] ? bpf_tcp_close+0x610/0xf80 [ 112.850263] panic+0x22f/0x4de [ 112.853457] ? add_taint.cold.5+0x16/0x16 [ 112.857610] ? do_raw_spin_unlock+0x9e/0x2e0 [ 112.862021] ? do_raw_spin_unlock+0x9e/0x2e0 [ 112.866433] ? bpf_tcp_close+0x6f5/0xf80 [ 112.870496] kasan_end_report+0x47/0x4f [ 112.874470] kasan_report.cold.7+0x76/0x2fe [ 112.878799] check_memory_region+0x13e/0x1b0 [ 112.883387] kasan_check_write+0x14/0x20 [ 112.887445] bpf_tcp_close+0x6f5/0xf80 [ 112.891314] ? tcp_check_oom+0x520/0x520 [ 112.895359] ? lock_downgrade+0x8e0/0x8e0 [ 112.899493] ? sock_hash_free+0x6e0/0x6e0 [ 112.903624] ? kasan_check_read+0x11/0x20 [ 112.907752] ? rcu_is_watching+0x85/0x140 [ 112.911887] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 112.917062] ? kasan_check_read+0x11/0x20 [ 112.921202] ? rcu_is_watching+0x85/0x140 [ 112.925346] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 112.930878] ? ipv6_sock_ac_close+0x34e/0x480 [ 112.935373] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 112.940895] ? ipv6_sock_mc_close+0x161/0x1c0 [ 112.945380] ? ip_mc_drop_socket+0x20f/0x270 [ 112.949775] inet_release+0x104/0x1f0 [ 112.953570] inet6_release+0x50/0x70 [ 112.957270] sock_release+0x96/0x1b0 [ 112.960971] ? sock_alloc_file+0x4e0/0x4e0 [ 112.965190] sock_close+0x16/0x20 [ 112.968625] __fput+0x34d/0x890 [ 112.971889] ? fput+0x1a0/0x1a0 [ 112.975161] ? check_same_owner+0x320/0x320 [ 112.979465] ? _raw_spin_unlock_irq+0x27/0x70 [ 112.984726] ____fput+0x15/0x20 [ 112.987986] task_work_run+0x1e4/0x290 [ 112.991859] ? task_work_cancel+0x240/0x240 [ 112.996162] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 113.001678] ? switch_task_namespaces+0xa2/0xd0 [ 113.006748] do_exit+0x1aee/0x2730 [ 113.010270] ? mm_update_next_owner+0x980/0x980 [ 113.014920] ? lock_downgrade+0x8e0/0x8e0 [ 113.019054] ? kasan_check_read+0x11/0x20 [ 113.023181] ? rcu_is_watching+0x85/0x140 [ 113.027308] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 113.032479] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 113.037745] ? is_bpf_text_address+0xd7/0x170 [ 113.042222] ? kernel_text_address+0x79/0xf0 [ 113.046615] ? __unwind_start+0x166/0x330 [ 113.050749] ? __kernel_text_address+0xd/0x40 [ 113.055224] ? unwind_get_return_address+0x61/0xa0 [ 113.060138] ? save_stack+0xa9/0xd0 [ 113.063744] ? save_stack+0x43/0xd0 [ 113.067356] ? __kasan_slab_free+0x11a/0x170 [ 113.071741] ? kasan_slab_free+0xe/0x10 [ 113.075701] ? kfree+0xd9/0x260 [ 113.078965] ? map_update_elem+0x650/0xc90 [ 113.083180] ? __x64_sys_bpf+0x32a/0x4f0 [ 113.087221] ? do_syscall_64+0x1b1/0x800 [ 113.091264] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 113.096613] ? kasan_check_read+0x11/0x20 [ 113.100745] ? do_raw_spin_unlock+0x9e/0x2e0 [ 113.105135] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 113.110050] ? kasan_check_write+0x14/0x20 [ 113.114271] ? do_raw_spin_lock+0xc1/0x200 [ 113.118489] ? trace_hardirqs_off+0xd/0x10 [ 113.122708] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 113.127792] ? debug_check_no_obj_freed+0x2ff/0x584 [ 113.132800] ? trace_hardirqs_off+0xd/0x10 [ 113.137025] ? quarantine_put+0xeb/0x190 [ 113.141068] ? kfree+0x111/0x260 [ 113.144414] ? map_update_elem+0x650/0xc90 [ 113.148629] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 113.153633] ? trace_hardirqs_on+0xd/0x10 [ 113.157762] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 113.163279] ? map_update_elem+0x127/0xc90 [ 113.167499] do_group_exit+0x16f/0x430 [ 113.171374] ? bpf_prog_get+0x20/0x20 [ 113.175156] ? __ia32_sys_exit+0x50/0x50 [ 113.179205] ? do_syscall_64+0x92/0x800 [ 113.183160] __x64_sys_exit_group+0x3e/0x50 [ 113.187469] do_syscall_64+0x1b1/0x800 [ 113.191338] ? syscall_return_slowpath+0x5c0/0x5c0 [ 113.196255] ? syscall_return_slowpath+0x30f/0x5c0 [ 113.201171] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 113.206518] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 113.211348] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 113.216515] RIP: 0033:0x440a59 [ 113.219691] RSP: 002b:00007ffdadf92488 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7 [ 113.227380] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440a59 [ 113.234631] RDX: 0000000000440a59 RSI: 0000000000000020 RDI: 0000000000000000 [ 113.241879] RBP: 0000000000000000 R08: 00000000004002c8 R09: 0000000000401ea0 [ 113.249128] R10: 00000000004002c8 R11: 0000000000000206 R12: 000000000001b5ac [ 113.256375] R13: 0000000000401ea0 R14: 0000000000000000 R15: 0000000000000000 [ 113.264092] Dumping ftrace buffer: [ 113.267606] (ftrace buffer empty) [ 113.271300] Kernel Offset: disabled [ 113.274917] Rebooting in 86400 seconds..