executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 305.145220] kasan: CONFIG_KASAN_INLINE enabled [ 305.145642] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 305.146282] general protection fault: 0000 [#1] SMP KASAN [ 305.146876] Dumping ftrace buffer: [ 305.147128] (ftrace buffer empty) [ 305.147376] Modules linked in: [ 305.147622] CPU: 2 PID: 4148 Comm: syzkaller531708 Not tainted 4.13.0-rc6-next-20170824+ #8 [ 305.148231] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 305.148841] task: ffff880039d92440 task.stack: ffff88003d5c8000 [ 305.149289] RIP: 0010:SyS_bpf+0xd18/0x5170 [ 305.149599] RSP: 0018:ffff88003d5cf7c8 EFLAGS: 00010206 [ 305.150009] RAX: dffffc0000000000 RBX: 000000000000000f RCX: 0000000000000000 [ 305.150484] RDX: 0000000000000006 RSI: 0000000000000001 RDI: ffffffff84ee4b58 [ 305.151621] RBP: ffff88003d5cff48 R08: 0000000000000050 R09: 0000000000000000 [ 305.152164] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff10007ab9f00 [ 305.152753] R13: ffffffff84eeb7c0 R14: 0000000000000000 R15: 0000000020fcafec [ 305.153260] FS: 00007f67a6db8700(0000) GS:ffff88006de00000(0000) knlGS:0000000000000000 [ 305.154097] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 305.154676] CR2: 0000000020fcafec CR3: 000000003d7cd000 CR4: 00000000000006e0 [ 305.155402] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 305.156114] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 305.156621] Call Trace: [ 305.156828] ? bpf_prog_get+0x20/0x20 [ 305.157082] ? lru_cache_add_file+0x20/0x20 [ 305.157375] ? find_held_lock+0x39/0x1d0 [ 305.157655] ? lock_downgrade+0x990/0x990 [ 305.157939] ? lru_cache_add_active_or_unevictable+0x20e/0x540 [ 305.158331] ? add_page_to_unevictable_list+0x730/0x730 [ 305.158699] ? __handle_mm_fault+0x2780/0x39c0 [ 305.159002] ? do_raw_spin_trylock+0x190/0x190 [ 305.159303] ? lockdep_init_map+0x3d/0x70 [ 305.159589] ? check_noncircular+0x20/0x20 [ 305.160015] ? _raw_spin_unlock+0x22/0x30 [ 305.160336] ? __handle_mm_fault+0x587/0x39c0 [ 305.160784] ? __pmd_alloc+0x4e0/0x4e0 [ 305.161193] ? find_held_lock+0x39/0x1d0 [ 305.161557] ? lock_downgrade+0x990/0x990 [ 305.161960] ? handle_mm_fault+0x4a2/0x860 [ 305.162388] ? down_read_trylock+0xdb/0x170 [ 305.162815] ? __handle_mm_fault+0x39c0/0x39c0 [ 305.163301] ? vmacache_find+0x61/0x270 [ 305.163725] ? vmacache_update+0xfe/0x130 [ 305.164210] ? up_read+0x1a/0x40 [ 305.164617] ? __do_page_fault+0x35b/0xb60 [ 305.165047] ? trace_do_page_fault+0x141/0x730 [ 305.165496] ? do_page_fault+0x70/0x70 [ 305.165888] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 305.166375] ? syscall_return_slowpath+0x2b3/0x500 [ 305.166850] ? finish_task_switch+0x456/0x740 [ 305.167286] ? prepare_exit_to_usermode+0x2c0/0x2c0 [ 305.167776] ? entry_SYSCALL_64_fastpath+0x5/0xbe [ 305.168247] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 305.168716] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 305.169184] RIP: 0033:0x43b6f9 [ 305.169495] RSP: 002b:00007f67a6db7db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 305.170256] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043b6f9 [ 305.170962] RDX: 0000000000000014 RSI: 0000000020fcafec RDI: 0000000000000000 [ 305.171666] RBP: 0000000000000086 R08: 00007f67a6db8700 R09: 0000000000000000 [ 305.173211] R10: 00007f67a6db8700 R11: 0000000000000246 R12: 0000000000000000 [ 305.173936] R13: 0000000000000000 R14: 00007f67a6db89c0 R15: 00007f67a6db8700 [ 305.174651] Code: 00 0f 85 dc 43 00 00 49 8d 46 30 4e 8b 2c ed e0 4a ee 84 48 89 c2 48 89 85 b0 f8 ff ff 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 9d 43 00 00 49 8d 7e 04 48 b8 00 00 00 00 00 [ 305.176621] RIP: SyS_bpf+0xd18/0x5170 RSP: ffff88003d5cf7c8 [ 305.177263] ---[ end trace 4b5dbb39cfa22aaa ]--- [ 305.177761] Kernel panic - not syncing: Fatal exception [ 305.178431] Dumping ftrace buffer: [ 305.178785] (ftrace buffer empty) [ 305.179157] Kernel Offset: disabled [ 305.179524] Rebooting in 86400 seconds..