Warning: Permanently added '10.128.0.165' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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: [ 181.936635] print_req_error: I/O error, dev loop1, sector 0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 197.821562] ================================================================== [ 197.828959] BUG: KASAN: use-after-free in __lock_acquire+0x2c57/0x3f20 [ 197.835615] Read of size 8 at addr ffff8880aa156068 by task loop2/12228 [ 197.842346] [ 197.843951] CPU: 0 PID: 12228 Comm: loop2 Not tainted 4.14.221-syzkaller #0 [ 197.851019] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 197.860343] Call Trace: [ 197.862913] dump_stack+0x1b2/0x281 [ 197.866515] print_address_description.cold+0x54/0x1d3 [ 197.871776] kasan_report_error.cold+0x8a/0x191 [ 197.876425] ? __lock_acquire+0x2c57/0x3f20 [ 197.880723] __asan_report_load8_noabort+0x68/0x70 [ 197.885629] ? check_preemption_disabled+0x30/0x240 [ 197.890618] ? __lock_acquire+0x2c57/0x3f20 [ 197.894913] __lock_acquire+0x2c57/0x3f20 [ 197.899036] ? kasan_slab_free+0x12d/0x1a0 [ 197.903242] ? kasan_slab_free+0xc3/0x1a0 [ 197.907409] ? kmem_cache_free+0x7c/0x2b0 [ 197.911674] ? mempool_free+0xcf/0x1d0 [ 197.915548] ? bio_free+0x11f/0x1a0 [ 197.919163] ? bio_put+0x59/0x70 [ 197.922506] ? lbmIODone+0xca/0xe00 [ 197.926106] ? bio_endio+0x27a/0x680 [ 197.929792] ? blk_update_request+0x2d0/0xa30 [ 197.934312] ? blk_mq_end_request+0x4c/0x1e0 [ 197.938703] ? trace_hardirqs_on+0x10/0x10 [ 197.942922] ? kthread_worker_fn+0x271/0x6c0 [ 197.947304] ? kthread+0x30d/0x420 [ 197.950817] ? ret_from_fork+0x24/0x30 [ 197.954679] ? lock_acquire+0x170/0x3f0 [ 197.958637] ? lock_downgrade+0x740/0x740 [ 197.962760] ? current_time+0x89/0xb0 [ 197.966557] lock_acquire+0x170/0x3f0 [ 197.970333] ? __wake_up_common_lock+0x9d/0x140 [ 197.974976] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 197.979706] _raw_spin_lock_irqsave+0x8c/0xc0 [ 197.984178] ? __wake_up_common_lock+0x9d/0x140 [ 197.988824] __wake_up_common_lock+0x9d/0x140 [ 197.993294] ? __wake_up_common+0x5d0/0x5d0 [ 197.997598] ? _raw_spin_unlock_irqrestore+0xa3/0xe0 [ 198.002717] lbmIODone+0x3c6/0xe00 [ 198.006233] ? lock_acquire+0x170/0x3f0 [ 198.010183] ? lock_downgrade+0x740/0x740 [ 198.014336] ? lbmFree+0x100/0x100 [ 198.017865] bio_endio+0x27a/0x680 [ 198.021383] blk_update_request+0x2d0/0xa30 [ 198.025721] blk_mq_end_request+0x4c/0x1e0 [ 198.029931] __blk_mq_complete_request+0x30b/0x6c0 [ 198.034834] blk_mq_complete_request+0x52/0x60 [ 198.039393] loop_queue_work+0x227/0x1e80 [ 198.043517] ? finish_task_switch+0x178/0x610 [ 198.047984] ? finish_task_switch+0x14d/0x610 [ 198.052451] ? switch_mm_irqs_off+0x2d2/0xeb0 [ 198.056919] ? lo_fallocate.isra.0+0x120/0x120 [ 198.061479] ? __schedule+0x893/0x1de0 [ 198.065348] ? lock_acquire+0x170/0x3f0 [ 198.069296] ? _raw_spin_unlock_irq+0x24/0x80 [ 198.073776] kthread_worker_fn+0x271/0x6c0 [ 198.077985] ? __kthread_init_worker+0xf0/0xf0 [ 198.082541] ? loop_get_status64+0x100/0x100 [ 198.086921] kthread+0x30d/0x420 [ 198.090260] ? kthread_create_on_node+0xd0/0xd0 [ 198.094914] ret_from_fork+0x24/0x30 [ 198.098601] [ 198.100206] Allocated by task 12223: [ 198.103904] kasan_kmalloc+0xeb/0x160 [ 198.107683] kmem_cache_alloc_trace+0x131/0x3d0 [ 198.112341] lmLogInit+0x2f1/0x12f0 [ 198.115955] lmLogOpen+0x6b1/0x10e0 [ 198.119553] jfs_mount_rw+0x236/0x430 [ 198.123331] jfs_fill_super+0x78a/0xab0 [ 198.127285] mount_bdev+0x2b3/0x360 [ 198.130885] mount_fs+0x92/0x2a0 [ 198.134226] vfs_kern_mount.part.0+0x5b/0x470 [ 198.138696] do_mount+0xe53/0x2a00 [ 198.142215] SyS_mount+0xa8/0x120 [ 198.145642] do_syscall_64+0x1d5/0x640 [ 198.149517] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 198.154675] [ 198.156274] Freed by task 12223: [ 198.159631] kasan_slab_free+0xc3/0x1a0 [ 198.163602] kfree+0xc9/0x250 [ 198.166684] lmLogInit+0xeaf/0x12f0 [ 198.170283] lmLogOpen+0x6b1/0x10e0 [ 198.173883] jfs_mount_rw+0x236/0x430 [ 198.177659] jfs_fill_super+0x78a/0xab0 [ 198.181605] mount_bdev+0x2b3/0x360 [ 198.185203] mount_fs+0x92/0x2a0 [ 198.188543] vfs_kern_mount.part.0+0x5b/0x470 [ 198.193007] do_mount+0xe53/0x2a00 [ 198.196519] SyS_mount+0xa8/0x120 [ 198.199944] do_syscall_64+0x1d5/0x640 [ 198.203804] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 198.208973] [ 198.210575] The buggy address belongs to the object at ffff8880aa156000 [ 198.210575] which belongs to the cache kmalloc-192 of size 192 [ 198.223201] The buggy address is located 104 bytes inside of [ 198.223201] 192-byte region [ffff8880aa156000, ffff8880aa1560c0) [ 198.235042] The buggy address belongs to the page: [ 198.239945] page:ffffea0002a85580 count:1 mapcount:0 mapping:ffff8880aa156000 index:0x0 [ 198.248060] flags: 0xfff00000000100(slab) [ 198.252179] raw: 00fff00000000100 ffff8880aa156000 0000000000000000 0000000100000010 [ 198.260030] raw: ffffea0002a89a20 ffffea0002a707e0 ffff88813fe80040 0000000000000000 [ 198.267883] page dumped because: kasan: bad access detected [ 198.273563] [ 198.275162] Memory state around the buggy address: [ 198.280076] ffff8880aa155f00: fb fb fb fb fc fc fc fc 00 01 fc fc fc fc fc fc [ 198.287409] ffff8880aa155f80: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 198.294740] >ffff8880aa156000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 198.302074] ^ [ 198.308799] ffff8880aa156080: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 198.316130] ffff8880aa156100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 198.323472] ================================================================== [ 198.330801] Disabling lock debugging due to kernel taint [ 198.336226] Kernel panic - not syncing: panic_on_warn set ... [ 198.336226] [ 198.343561] CPU: 0 PID: 12228 Comm: loop2 Tainted: G B 4.14.221-syzkaller #0 [ 198.351846] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 198.361170] Call Trace: [ 198.363738] dump_stack+0x1b2/0x281 [ 198.367339] panic+0x1f9/0x42d [ 198.370509] ? add_taint.cold+0x16/0x16 [ 198.374458] ? lock_downgrade+0x740/0x740 [ 198.378582] kasan_end_report+0x43/0x49 [ 198.382533] kasan_report_error.cold+0xa7/0x191 [ 198.387176] ? __lock_acquire+0x2c57/0x3f20 [ 198.391478] __asan_report_load8_noabort+0x68/0x70 [ 198.396388] ? check_preemption_disabled+0x30/0x240 [ 198.401379] ? __lock_acquire+0x2c57/0x3f20 [ 198.405681] __lock_acquire+0x2c57/0x3f20 [ 198.409802] ? kasan_slab_free+0x12d/0x1a0 [ 198.414009] ? kasan_slab_free+0xc3/0x1a0 [ 198.418160] ? kmem_cache_free+0x7c/0x2b0 [ 198.422281] ? mempool_free+0xcf/0x1d0 [ 198.426165] ? bio_free+0x11f/0x1a0 [ 198.429763] ? bio_put+0x59/0x70 [ 198.433111] ? lbmIODone+0xca/0xe00 [ 198.436714] ? bio_endio+0x27a/0x680 [ 198.440398] ? blk_update_request+0x2d0/0xa30 [ 198.444875] ? blk_mq_end_request+0x4c/0x1e0 [ 198.449257] ? trace_hardirqs_on+0x10/0x10 [ 198.453589] ? kthread_worker_fn+0x271/0x6c0 [ 198.457970] ? kthread+0x30d/0x420 [ 198.461483] ? ret_from_fork+0x24/0x30 [ 198.465343] ? lock_acquire+0x170/0x3f0 [ 198.469289] ? lock_downgrade+0x740/0x740 [ 198.473414] ? current_time+0x89/0xb0 [ 198.477191] lock_acquire+0x170/0x3f0 [ 198.481091] ? __wake_up_common_lock+0x9d/0x140 [ 198.485733] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 198.490463] _raw_spin_lock_irqsave+0x8c/0xc0 [ 198.494934] ? __wake_up_common_lock+0x9d/0x140 [ 198.499576] __wake_up_common_lock+0x9d/0x140 [ 198.504060] ? __wake_up_common+0x5d0/0x5d0 [ 198.508473] ? _raw_spin_unlock_irqrestore+0xa3/0xe0 [ 198.513548] lbmIODone+0x3c6/0xe00 [ 198.517062] ? lock_acquire+0x170/0x3f0 [ 198.521011] ? lock_downgrade+0x740/0x740 [ 198.525129] ? lbmFree+0x100/0x100 [ 198.528642] bio_endio+0x27a/0x680 [ 198.532157] blk_update_request+0x2d0/0xa30 [ 198.536460] blk_mq_end_request+0x4c/0x1e0 [ 198.540675] __blk_mq_complete_request+0x30b/0x6c0 [ 198.545586] blk_mq_complete_request+0x52/0x60 [ 198.550150] loop_queue_work+0x227/0x1e80 [ 198.554274] ? finish_task_switch+0x178/0x610 [ 198.558741] ? finish_task_switch+0x14d/0x610 [ 198.563209] ? switch_mm_irqs_off+0x2d2/0xeb0 [ 198.567701] ? lo_fallocate.isra.0+0x120/0x120 [ 198.572259] ? __schedule+0x893/0x1de0 [ 198.576122] ? lock_acquire+0x170/0x3f0 [ 198.580073] ? _raw_spin_unlock_irq+0x24/0x80 [ 198.584544] kthread_worker_fn+0x271/0x6c0 [ 198.588787] ? __kthread_init_worker+0xf0/0xf0 [ 198.593350] ? loop_get_status64+0x100/0x100 [ 198.597739] kthread+0x30d/0x420 [ 198.601087] ? kthread_create_on_node+0xd0/0xd0 [ 198.605727] ret_from_fork+0x24/0x30 [ 198.610003] Kernel Offset: disabled [ 198.613618] Rebooting in 86400 seconds..