Warning: Permanently added '10.128.0.233' (ECDSA) to the list of known hosts. [ 444.111221] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program [ 444.231227] audit: type=1400 audit(1575263283.353:36): avc: denied { map } for pid=6874 comm="syz-executor695" path="/root/syz-executor695353065" dev="sda1" ino=16461 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 444.261659] input: syz1 as /devices/virtual/input/input6 [ 444.271975] input: syz1 as /devices/virtual/input/input8 [ 444.278446] input: syz1 as /devices/virtual/input/input7 [ 444.285101] input: syz1 as /devices/virtual/input/input9 [ 444.299534] input: syz1 as /devices/virtual/input/input10 [ 444.313768] input: syz1 as /devices/virtual/input/input5 executing program executing program executing program [ 444.366646] input: syz1 as /devices/virtual/input/input11 [ 444.405678] input: syz1 as /devices/virtual/input/input12 executing program executing program [ 444.439697] input: syz1 as /devices/virtual/input/input13 [ 444.465047] input: syz1 as /devices/virtual/input/input14 executing program executing program [ 444.519421] input: syz1 as /devices/virtual/input/input15 [ 444.554693] input: syz1 as /devices/virtual/input/input16 executing program executing program [ 444.601383] input: syz1 as /devices/virtual/input/input17 [ 444.635419] input: syz1 as /devices/virtual/input/input18 executing program executing program [ 444.671398] input: syz1 as /devices/virtual/input/input19 [ 444.710311] input: syz1 as /devices/virtual/input/input20 executing program [ 444.746511] input: syz1 as /devices/virtual/input/input21 executing program executing program [ 444.787930] input: syz1 as /devices/virtual/input/input22 [ 444.825411] input: syz1 as /devices/virtual/input/input23 executing program executing program [ 444.877423] input: syz1 as /devices/virtual/input/input24 [ 444.917110] input: syz1 as /devices/virtual/input/input25 executing program [ 444.947206] input: syz1 as /devices/virtual/input/input26 executing program executing program [ 444.989988] input: syz1 as /devices/virtual/input/input27 [ 445.015939] input: syz1 as /devices/virtual/input/input28 executing program [ 445.078130] input: syz1 as /devices/virtual/input/input29 executing program executing program [ 445.126608] input: syz1 as /devices/virtual/input/input30 [ 445.155978] input: syz1 as /devices/virtual/input/input31 executing program executing program [ 445.202098] input: syz1 as /devices/virtual/input/input32 [ 445.235943] input: syz1 as /devices/virtual/input/input33 executing program executing program [ 445.269431] input: syz1 as /devices/virtual/input/input34 [ 445.285818] input: syz1 as /devices/virtual/input/input35 executing program [ 445.325395] input: syz1 as /devices/virtual/input/input36 executing program executing program [ 445.375775] input: syz1 as /devices/virtual/input/input37 [ 445.415562] input: syz1 as /devices/virtual/input/input38 executing program executing program [ 445.456594] input: syz1 as /devices/virtual/input/input39 [ 445.493058] input: syz1 as /devices/virtual/input/input41 [ 445.500811] input: syz1 as /devices/virtual/input/input40 executing program executing program executing program [ 445.555082] input: syz1 as /devices/virtual/input/input42 [ 445.585314] input: syz1 as /devices/virtual/input/input43 executing program executing program [ 445.612980] input: syz1 as /devices/virtual/input/input44 [ 445.638818] input: syz1 as /devices/virtual/input/input45 executing program executing program [ 445.695363] input: syz1 as /devices/virtual/input/input46 [ 445.733347] input: syz1 as /devices/virtual/input/input47 executing program executing program [ 445.776302] input: syz1 as /devices/virtual/input/input48 [ 445.804775] input: syz1 as /devices/virtual/input/input49 executing program executing program [ 445.836206] input: syz1 as /devices/virtual/input/input50 [ 445.865277] input: syz1 as /devices/virtual/input/input51 executing program [ 445.911204] input: syz1 as /devices/virtual/input/input52 executing program executing program [ 445.958014] input: syz1 as /devices/virtual/input/input53 [ 445.995857] input: syz1 as /devices/virtual/input/input54 executing program [ 446.034407] input: syz1 as /devices/virtual/input/input55 executing program [ 446.076735] input: syz1 as /devices/virtual/input/input56 executing program executing program [ 446.126501] input: syz1 as /devices/virtual/input/input57 [ 446.161259] input: syz1 as /devices/virtual/input/input58 executing program executing program [ 446.206032] input: syz1 as /devices/virtual/input/input59 [ 446.244559] input: syz1 as /devices/virtual/input/input60 [ 446.291103] input: syz1 as /devices/virtual/input/input61 executing program executing program executing program [ 446.370569] input: syz1 as /devices/virtual/input/input62 [ 446.400712] input: syz1 as /devices/virtual/input/input63 executing program executing program [ 446.436172] input: syz1 as /devices/virtual/input/input64 [ 446.462917] input: syz1 as /devices/virtual/input/input65 executing program executing program [ 446.504249] input: syz1 as /devices/virtual/input/input66 [ 446.527882] input: syz1 as /devices/virtual/input/input67 executing program executing program [ 446.571410] input: syz1 as /devices/virtual/input/input68 [ 446.603660] input: syz1 as /devices/virtual/input/input69 executing program executing program [ 446.642460] input: syz1 as /devices/virtual/input/input70 [ 446.674862] input: syz1 as /devices/virtual/input/input71 [ 446.721651] input: syz1 as /devices/virtual/input/input72 executing program executing program [ 446.784982] input: syz1 as /devices/virtual/input/input73 executing program [ 446.834485] input: syz1 as /devices/virtual/input/input74 executing program executing program [ 446.874776] input: syz1 as /devices/virtual/input/input75 [ 446.905039] input: syz1 as /devices/virtual/input/input76 executing program executing program [ 446.949545] input: syz1 as /devices/virtual/input/input77 [ 446.985191] input: syz1 as /devices/virtual/input/input78 executing program [ 447.014608] input: syz1 as /devices/virtual/input/input79 executing program [ 447.055295] input: syz1 as /devices/virtual/input/input80 executing program executing program [ 447.104793] input: syz1 as /devices/virtual/input/input81 [ 447.144761] input: syz1 as /devices/virtual/input/input82 executing program [ 447.185276] input: syz1 as /devices/virtual/input/input83 executing program [ 447.230403] input: syz1 as /devices/virtual/input/input84 executing program executing program [ 447.276732] input: syz1 as /devices/virtual/input/input85 [ 447.309542] input: syz1 as /devices/virtual/input/input86 executing program executing program [ 447.367379] input: syz1 as /devices/virtual/input/input87 [ 447.394969] input: syz1 as /devices/virtual/input/input88 executing program [ 447.449049] input: syz1 as /devices/virtual/input/input89 executing program [ 447.496292] input: syz1 as /devices/virtual/input/input90 executing program executing program [ 447.555770] input: syz1 as /devices/virtual/input/input91 [ 447.595253] input: syz1 as /devices/virtual/input/input92 executing program executing program [ 447.625252] input: syz1 as /devices/virtual/input/input93 [ 447.664906] input: syz1 as /devices/virtual/input/input94 executing program executing program [ 447.716636] input: syz1 as /devices/virtual/input/input95 [ 447.744799] input: syz1 as /devices/virtual/input/input96 executing program [ 447.785286] input: syz1 as /devices/virtual/input/input97 executing program [ 447.826001] input: syz1 as /devices/virtual/input/input98 executing program executing program [ 447.884668] input: syz1 as /devices/virtual/input/input99 [ 447.905379] input: syz1 as /devices/virtual/input/input100 executing program [ 447.946208] input: syz1 as /devices/virtual/input/input101 executing program executing program [ 448.005289] input: syz1 as /devices/virtual/input/input102 [ 448.041401] input: syz1 as /devices/virtual/input/input103 executing program [ 448.075430] input: syz1 as /devices/virtual/input/input104 executing program [ 448.125331] input: syz1 as /devices/virtual/input/input105 executing program [ 448.182137] input: syz1 as /devices/virtual/input/input106 executing program executing program [ 448.224436] input: syz1 as /devices/virtual/input/input107 [ 448.246559] input: syz1 as /devices/virtual/input/input108 executing program executing program [ 448.291268] input: syz1 as /devices/virtual/input/input109 [ 448.307631] input: syz1 as /devices/virtual/input/input110 executing program [ 448.347402] input: syz1 as /devices/virtual/input/input111 executing program executing program [ 448.394027] input: syz1 as /devices/virtual/input/input112 [ 448.415003] input: syz1 as /devices/virtual/input/input113 executing program [ 448.459125] input: syz1 as /devices/virtual/input/input114 executing program executing program [ 448.502883] input: syz1 as /devices/virtual/input/input115 [ 448.531277] input: syz1 as /devices/virtual/input/input116 executing program [ 448.582629] input: syz1 as /devices/virtual/input/input117 executing program [ 448.624769] input: syz1 as /devices/virtual/input/input118 executing program [ 448.689954] input: syz1 as /devices/virtual/input/input119 executing program [ 448.743099] input: syz1 as /devices/virtual/input/input120 [ 448.779796] input: syz1 as /devices/virtual/input/input121 executing program executing program [ 448.825979] input: syz1 as /devices/virtual/input/input122 executing program executing program [ 448.872673] input: syz1 as /devices/virtual/input/input123 [ 448.892952] input: syz1 as /devices/virtual/input/input124 executing program executing program [ 448.930769] input: syz1 as /devices/virtual/input/input125 [ 448.957944] input: syz1 as /devices/virtual/input/input126 executing program [ 448.994813] input: syz1 as /devices/virtual/input/input127 executing program executing program [ 449.041005] input: syz1 as /devices/virtual/input/input128 [ 449.067094] input: syz1 as /devices/virtual/input/input129 executing program [ 449.107276] input: syz1 as /devices/virtual/input/input130 executing program executing program [ 449.154766] input: syz1 as /devices/virtual/input/input131 [ 449.185334] input: syz1 as /devices/virtual/input/input132 executing program executing program [ 449.220377] input: syz1 as /devices/virtual/input/input133 [ 449.244838] input: syz1 as /devices/virtual/input/input134 executing program executing program [ 449.277437] input: syz1 as /devices/virtual/input/input135 [ 449.316923] input: syz1 as /devices/virtual/input/input136 executing program [ 449.359965] input: syz1 as /devices/virtual/input/input137 executing program [ 449.412158] input: syz1 as /devices/virtual/input/input138 executing program [ 449.461696] input: syz1 as /devices/virtual/input/input139 executing program executing program [ 449.512478] input: syz1 as /devices/virtual/input/input140 [ 449.550795] input: syz1 as /devices/virtual/input/input141 executing program [ 449.594725] input: syz1 as /devices/virtual/input/input142 executing program [ 449.639406] input: syz1 as /devices/virtual/input/input143 executing program [ 449.699820] input: syz1 as /devices/virtual/input/input144 executing program [ 449.741832] input: syz1 as /devices/virtual/input/input145 executing program [ 449.786171] input: syz1 as /devices/virtual/input/input146 executing program executing program [ 449.831524] input: syz1 as /devices/virtual/input/input147 [ 449.866090] input: syz1 as /devices/virtual/input/input148 executing program executing program [ 449.905732] input: syz1 as /devices/virtual/input/input149 [ 449.945212] input: syz1 as /devices/virtual/input/input150 executing program executing program [ 449.981110] input: syz1 as /devices/virtual/input/input151 [ 450.020969] input: syz1 as /devices/virtual/input/input152 executing program [ 450.061558] input: syz1 as /devices/virtual/input/input153 executing program [ 450.119217] input: syz1 as /devices/virtual/input/input154 executing program executing program [ 450.162056] input: syz1 as /devices/virtual/input/input155 [ 450.191456] input: syz1 as /devices/virtual/input/input156 executing program executing program [ 450.224158] input: syz1 as /devices/virtual/input/input157 [ 450.263920] input: syz1 as /devices/virtual/input/input158 executing program [ 450.301163] input: syz1 as /devices/virtual/input/input159 executing program [ 450.341866] input: syz1 as /devices/virtual/input/input160 executing program [ 450.391720] input: syz1 as /devices/virtual/input/input161 executing program executing program [ 450.444057] input: syz1 as /devices/virtual/input/input162 [ 450.471119] input: syz1 as /devices/virtual/input/input163 executing program executing program [ 450.499404] input: syz1 as /devices/virtual/input/input164 [ 450.534239] input: syz1 as /devices/virtual/input/input165 executing program [ 450.566325] input: syz1 as /devices/virtual/input/input166 executing program [ 450.617096] input: syz1 as /devices/virtual/input/input167 executing program executing program [ 450.661249] input: syz1 as /devices/virtual/input/input168 [ 450.699462] input: syz1 as /devices/virtual/input/input169 executing program [ 450.728948] input: syz1 as /devices/virtual/input/input170 executing program [ 450.791217] input: syz1 as /devices/virtual/input/input171 executing program [ 450.841469] input: syz1 as /devices/virtual/input/input172 [ 450.877272] input: syz1 as /devices/virtual/input/input173 executing program executing program executing program [ 450.931867] input: syz1 as /devices/virtual/input/input174 [ 450.971300] input: syz1 as /devices/virtual/input/input175 executing program executing program [ 451.011130] input: syz1 as /devices/virtual/input/input176 [ 451.044400] input: syz1 as /devices/virtual/input/input177 executing program executing program [ 451.078806] input: syz1 as /devices/virtual/input/input178 [ 451.111291] input: syz1 as /devices/virtual/input/input179 executing program [ 451.135763] input: syz1 as /devices/virtual/input/input180 executing program [ 451.187057] input: syz1 as /devices/virtual/input/input181 executing program [ 451.231274] input: syz1 as /devices/virtual/input/input182 executing program executing program [ 451.274002] input: syz1 as /devices/virtual/input/input183 [ 451.311377] input: syz1 as /devices/virtual/input/input184 executing program executing program [ 451.351092] input: syz1 as /devices/virtual/input/input185 [ 451.381374] input: syz1 as /devices/virtual/input/input186 executing program [ 451.428791] input: syz1 as /devices/virtual/input/input187 executing program [ 451.481213] input: syz1 as /devices/virtual/input/input188 executing program [ 451.528996] input: syz1 as /devices/virtual/input/input189 executing program [ 451.582301] input: syz1 as /devices/virtual/input/input190 executing program [ 451.629571] input: syz1 as /devices/virtual/input/input191 executing program [ 451.687414] input: syz1 as /devices/virtual/input/input192 executing program [ 451.731027] input: syz1 as /devices/virtual/input/input193 executing program executing program [ 451.776893] input: syz1 as /devices/virtual/input/input194 [ 451.814192] input: syz1 as /devices/virtual/input/input195 executing program [ 451.856550] input: syz1 as /devices/virtual/input/input196 [ 451.894637] input: syz1 as /devices/virtual/input/input197 executing program executing program [ 451.948689] input: syz1 as /devices/virtual/input/input198 executing program [ 452.000943] input: syz1 as /devices/virtual/input/input199 executing program executing program [ 452.041754] input: syz1 as /devices/virtual/input/input200 [ 452.076863] input: syz1 as /devices/virtual/input/input201 executing program [ 452.109614] input: syz1 as /devices/virtual/input/input202 executing program [ 452.154807] input: syz1 as /devices/virtual/input/input203 executing program [ 452.201527] input: syz1 as /devices/virtual/input/input204 executing program [ 452.244399] input: syz1 as /devices/virtual/input/input205 executing program [ 452.300350] input: syz1 as /devices/virtual/input/input206 executing program [ 452.358851] input: syz1 as /devices/virtual/input/input207 [ 452.400951] input: syz1 as /devices/virtual/input/input208 executing program executing program [ 452.446108] input: syz1 as /devices/virtual/input/input209 executing program [ 452.496045] input: syz1 as /devices/virtual/input/input210 executing program [ 452.551771] input: syz1 as /devices/virtual/input/input211 executing program [ 452.601480] input: syz1 as /devices/virtual/input/input212 executing program [ 452.645956] input: syz1 as /devices/virtual/input/input213 executing program [ 452.694819] input: syz1 as /devices/virtual/input/input214 [ 452.735222] input: syz1 as /devices/virtual/input/input215 executing program executing program executing program [ 452.785680] input: syz1 as /devices/virtual/input/input216 [ 452.824695] input: syz1 as /devices/virtual/input/input217 executing program executing program [ 452.855104] input: syz1 as /devices/virtual/input/input218 [ 452.889815] input: syz1 as /devices/virtual/input/input219 executing program executing program [ 452.924109] input: syz1 as /devices/virtual/input/input220 [ 452.954880] input: syz1 as /devices/virtual/input/input221 executing program [ 453.005069] input: syz1 as /devices/virtual/input/input222 executing program executing program [ 453.045712] input: syz1 as /devices/virtual/input/input223 [ 453.074410] input: syz1 as /devices/virtual/input/input224 executing program executing program [ 453.116631] input: syz1 as /devices/virtual/input/input225 [ 453.128343] input: syz1 as /devices/virtual/input/input226 executing program [ 453.167599] input: syz1 as /devices/virtual/input/input227 [ 453.205137] input: syz1 as /devices/virtual/input/input228 executing program executing program [ 453.245974] input: syz1 as /devices/virtual/input/input229 executing program executing program [ 453.295320] input: syz1 as /devices/virtual/input/input230 [ 453.334999] input: syz1 as /devices/virtual/input/input231 executing program executing program [ 453.375595] input: syz1 as /devices/virtual/input/input232 [ 453.395254] input: syz1 as /devices/virtual/input/input233 executing program [ 453.439062] input: syz1 as /devices/virtual/input/input234 executing program [ 453.484911] input: syz1 as /devices/virtual/input/input235 [ 453.522127] ================================================================== [ 453.529761] BUG: KASAN: use-after-free in cdev_put.part.0+0x4c/0x50 [ 453.536164] Read of size 8 at addr ffff8880a721aaa8 by task syz-executor695/7930 [ 453.536171] [ 453.536180] CPU: 0 PID: 7930 Comm: syz-executor695 Not tainted 4.14.157-syzkaller #0 [ 453.536185] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 453.536189] Call Trace: [ 453.536250] dump_stack+0x142/0x197 [ 453.536300] ? nf_nat_l4proto_unique_tuple+0x270/0x500 [ 453.545400] ? cdev_put.part.0+0x4c/0x50 [ 453.545439] print_address_description.cold+0x7c/0x1dc [ 453.545448] ? cdev_put.part.0+0x4c/0x50 [ 453.562648] kasan_report.cold+0xa9/0x2af [ 453.562692] ? evdev_ioctl+0x30/0x30 [ 453.562700] __asan_report_load8_noabort+0x14/0x20 [ 453.562710] cdev_put.part.0+0x4c/0x50 [ 453.562718] chrdev_open+0x266/0x590 [ 453.562729] ? cdev_put.part.0+0x50/0x50 [ 453.574230] ? security_file_open+0x89/0x190 [ 453.574243] do_dentry_open+0x73b/0xeb0 [ 453.579806] input: syz1 as /devices/virtual/input/input236 [ 453.583671] ? cdev_put.part.0+0x50/0x50 [ 453.583684] vfs_open+0x105/0x220 [ 453.583695] path_openat+0x8bd/0x3f70 [ 453.583708] ? trace_hardirqs_on+0x10/0x10 [ 453.583725] ? path_lookupat.isra.0+0x7b0/0x7b0 [ 453.583733] ? find_held_lock+0x35/0x130 [ 453.583768] ? __alloc_fd+0x1d4/0x4a0 [ 453.583777] do_filp_open+0x18e/0x250 [ 453.583786] ? may_open_dev+0xe0/0xe0 [ 453.608154] ? do_raw_spin_unlock+0x16b/0x260 [ 453.616723] ? _raw_spin_unlock+0x2d/0x50 [ 453.616734] ? __alloc_fd+0x1d4/0x4a0 [ 453.616752] do_sys_open+0x2c5/0x430 [ 453.625475] kobject: 'event6' (ffff88809c05e3f8): kobject_add_internal: parent: 'input233', set: 'devices' [ 453.626316] ? filp_open+0x70/0x70 [ 453.626333] SyS_open+0x2d/0x40 [ 453.626340] ? do_sys_open+0x430/0x430 [ 453.626352] do_syscall_64+0x1e8/0x640 [ 453.626360] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 453.626375] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 453.626384] RIP: 0033:0x405831 [ 453.626388] RSP: 002b:00007fabde6f6960 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 [ 453.626398] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000405831 [ 453.626402] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fabde6f6970 [ 453.626408] RBP: 6666666666666667 R08: 000000000000000f R09: 00007fabde6f7700 [ 453.631196] kobject: 'event6' (ffff88809c05e3f8): kobject_uevent_env [ 453.633976] R10: 00007fabde6f79d0 R11: 0000000000000293 R12: 00000000006dbc3c [ 453.633981] R13: 0000000000000000 R14: 0000000000000000 R15: 00000000317a7973 [ 453.633997] [ 453.634002] Allocated by task 7903: [ 453.634013] save_stack_trace+0x16/0x20 [ 453.634021] save_stack+0x45/0xd0 [ 453.634027] kasan_kmalloc+0xce/0xf0 [ 453.634034] kmem_cache_alloc_trace+0x152/0x790 [ 453.634042] evdev_connect+0x76/0x4a0 [ 453.634104] input_attach_handler+0x154/0x1a0 [ 453.634112] input_register_device.cold+0xbf/0x202 [ 453.638189] kobject: 'event6' (ffff88809c05e3f8): fill_kobj_path: path = '/devices/virtual/input/input233/event6' [ 453.642141] uinput_ioctl_handler.isra.0+0xdc8/0x18a0 [ 453.642148] uinput_ioctl+0x4a/0x60 [ 453.642156] do_vfs_ioctl+0x7ae/0x1060 [ 453.642163] SyS_ioctl+0x8f/0xc0 [ 453.642172] do_syscall_64+0x1e8/0x640 [ 453.642180] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 453.642182] [ 453.642186] Freed by task 7903: [ 453.642193] save_stack_trace+0x16/0x20 [ 453.642198] save_stack+0x45/0xd0 [ 453.642203] kasan_slab_free+0x75/0xc0 [ 453.642208] kfree+0xcc/0x270 [ 453.642213] evdev_free+0x5e/0x70 [ 453.642254] device_release+0x7b/0x1a0 [ 453.642269] kobject_put.cold+0x269/0x2f9 [ 453.651642] kobject: 'event5' (ffff88808d31b478): kobject_uevent_env [ 453.654743] put_device+0x20/0x30 [ 453.654753] evdev_disconnect+0x8f/0xb0 [ 453.654761] __input_unregister_device+0x1eb/0x480 [ 453.654769] input_unregister_device+0xa9/0xf0 [ 453.654777] uinput_destroy_device+0x1ce/0x220 [ 453.654783] uinput_release+0x3c/0x60 [ 453.654791] __fput+0x275/0x7a0 [ 453.654797] ____fput+0x16/0x20 [ 453.654804] task_work_run+0x114/0x190 [ 453.654811] do_exit+0x7df/0x2ce0 [ 453.654818] do_group_exit+0x111/0x330 [ 453.654825] get_signal+0x381/0x1cd0 [ 453.654831] do_signal+0x86/0x19a0 [ 453.658847] kobject: 'event5' (ffff88808d31b478): fill_kobj_path: path = '/devices/virtual/input/input231/event5' [ 453.662465] exit_to_usermode_loop+0x15c/0x220 [ 453.662472] do_syscall_64+0x4bc/0x640 [ 453.662481] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 453.662485] [ 453.662491] The buggy address belongs to the object at ffff8880a721a4c0 [ 453.662491] which belongs to the cache kmalloc-2048 of size 2048 [ 453.662497] The buggy address is located 1512 bytes inside of [ 453.662497] 2048-byte region [ffff8880a721a4c0, ffff8880a721acc0) [ 453.662500] The buggy address belongs to the page: [ 453.662507] page:ffffea00029c8680 count:1 mapcount:0 mapping:ffff8880a721a4c0 index:0x0 compound_mapcount: 0 [ 453.662518] flags: 0xfffe0000008100(slab|head) [ 453.662529] raw: 00fffe0000008100 ffff8880a721a4c0 0000000000000000 0000000100000003 [ 453.662536] raw: ffffea00021c05a0 ffffea00021d8aa0 ffff8880aa800c40 0000000000000000 [ 453.662538] page dumped because: kasan: bad access detected [ 453.662540] [ 453.662543] Memory state around the buggy address: [ 453.662548] ffff8880a721a980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 453.662553] ffff8880a721aa00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 453.662558] >ffff8880a721aa80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 453.662560] ^ [ 453.662566] ffff8880a721ab00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 453.662570] ffff8880a721ab80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 453.662573] ================================================================== [ 453.662575] Disabling lock debugging due to kernel taint [ 453.672642] Kernel panic - not syncing: panic_on_warn set ... [ 453.672642] [ 453.677995] kobject: '(null)' (ffff88808d31b8a8): kobject_cleanup, parent ffff88808d31b478 [ 453.678750] CPU: 0 PID: 7930 Comm: syz-executor695 Tainted: G B 4.14.157-syzkaller #0 [ 453.678754] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 453.678757] Call Trace: [ 453.678770] dump_stack+0x142/0x197 [ 453.678782] ? cdev_put.part.0+0x4c/0x50 [ 453.688884] kobject: '(null)' (ffff88808d31b8a8): calling ktype release [ 453.692070] panic+0x1f9/0x42d [ 453.692077] ? add_taint.cold+0x16/0x16 [ 453.692086] ? ___preempt_schedule+0x16/0x18 [ 453.692096] kasan_end_report+0x47/0x4f [ 453.692103] kasan_report.cold+0x130/0x2af [ 453.692111] ? evdev_ioctl+0x30/0x30 [ 453.765782] kobject: 'input234' (ffff88808d31a4e0): kobject_uevent_env [ 453.766780] __asan_report_load8_noabort+0x14/0x20 [ 453.766791] cdev_put.part.0+0x4c/0x50 [ 453.768417] kobject: 'input234' (ffff88808d31a4e0): fill_kobj_path: path = '/devices/virtual/input/input234' [ 453.772009] chrdev_open+0x266/0x590 [ 453.772015] ? cdev_put.part.0+0x50/0x50 [ 453.772023] ? security_file_open+0x89/0x190 [ 453.772031] do_dentry_open+0x73b/0xeb0 [ 453.772037] ? cdev_put.part.0+0x50/0x50 [ 453.772045] vfs_open+0x105/0x220 [ 453.772052] path_openat+0x8bd/0x3f70 [ 453.772064] ? trace_hardirqs_on+0x10/0x10 [ 453.778499] kobject: 'input234' (ffff88808d31a4e0): kobject_cleanup, parent (null) [ 453.779463] ? path_lookupat.isra.0+0x7b0/0x7b0 [ 453.779471] ? find_held_lock+0x35/0x130 [ 453.779481] ? __alloc_fd+0x1d4/0x4a0 [ 453.783283] kobject: 'input234' (ffff88808d31a4e0): calling ktype release [ 453.787910] do_filp_open+0x18e/0x250 [ 453.787918] ? may_open_dev+0xe0/0xe0 [ 453.787927] ? do_raw_spin_unlock+0x16b/0x260 [ 453.787937] ? _raw_spin_unlock+0x2d/0x50 [ 453.792117] kobject: 'input234': free name [ 453.796189] ? __alloc_fd+0x1d4/0x4a0 [ 453.796203] do_sys_open+0x2c5/0x430 [ 453.796212] ? filp_open+0x70/0x70 [ 453.804668] kobject: 'input236' (ffff8880a83b6420): kobject_uevent_env [ 453.811505] SyS_open+0x2d/0x40 [ 453.811511] ? do_sys_open+0x430/0x430 [ 453.811520] do_syscall_64+0x1e8/0x640 [ 453.811526] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 453.811537] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 453.811542] RIP: 0033:0x405831 [ 453.811548] RSP: 002b:00007fabde6f6960 EFLAGS: 00000293 [ 453.817387] kobject: 'input236' (ffff8880a83b6420): fill_kobj_path: path = '/devices/virtual/input/input236' [ 453.820320] ORIG_RAX: 0000000000000002 [ 453.820325] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000405831 [ 453.820329] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fabde6f6970 [ 453.820333] RBP: 6666666666666667 R08: 000000000000000f R09: 00007fabde6f7700 [ 453.820337] R10: 00007fabde6f79d0 R11: 0000000000000293 R12: 00000000006dbc3c [ 453.820340] R13: 0000000000000000 R14: 0000000000000000 R15: 00000000317a7973 [ 453.821651] Kernel Offset: disabled [ 454.356905] Rebooting in 86400 seconds..