[ OK ] Started OpenBSD Secure Shell server. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.53' (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 syzkaller login: [ 719.603874] print_req_error: I/O error, dev loop0, 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 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 767.647745] print_req_error: I/O error, dev loop2, sector 0 executing program executing program executing program executing program executing program executing program executing program executing program executing program 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executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 844.961957] 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 853.709404] ================================================================== [ 853.716977] BUG: KASAN: use-after-free in __lock_acquire+0x2c57/0x3f20 [ 853.723642] Read of size 8 at addr ffff8880af995e68 by task loop2/17200 [ 853.730379] [ 853.732002] CPU: 0 PID: 17200 Comm: loop2 Not tainted 4.14.202-syzkaller #0 [ 853.739087] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 853.748508] Call Trace: [ 853.751155] dump_stack+0x1b2/0x283 executing program [ 853.754853] print_address_description.cold+0x54/0x1d3 [ 853.760126] kasan_report_error.cold+0x8a/0x194 [ 853.764786] ? __lock_acquire+0x2c57/0x3f20 [ 853.769098] __asan_report_load8_noabort+0x68/0x70 [ 853.774068] ? assoc_array_gc+0x10c0/0x1110 [ 853.778382] ? __lock_acquire+0x2c57/0x3f20 [ 853.782694] __lock_acquire+0x2c57/0x3f20 [ 853.786833] ? kasan_slab_free+0x12d/0x1a0 [ 853.791059] ? kasan_slab_free+0xc3/0x1a0 [ 853.795269] ? kmem_cache_free+0x7c/0x2b0 [ 853.799479] ? mempool_free+0xcf/0x1d0 [ 853.803396] ? bio_free+0x11f/0x1a0 [ 853.807012] ? bio_put+0x59/0x70 [ 853.810404] ? lbmIODone+0xca/0xe00 [ 853.814023] ? bio_endio+0x27a/0x680 [ 853.817765] ? blk_update_request+0x2d0/0xa30 [ 853.822291] ? blk_mq_end_request+0x4c/0x1e0 [ 853.826691] ? trace_hardirqs_on+0x10/0x10 [ 853.830996] ? kthread_worker_fn+0x271/0x6c0 [ 853.835398] ? kthread+0x30d/0x420 [ 853.838970] ? ret_from_fork+0x24/0x30 [ 853.842848] ? lock_acquire+0x170/0x3f0 [ 853.846819] ? lock_downgrade+0x740/0x740 [ 853.850977] ? current_time+0x89/0xb0 [ 853.854769] lock_acquire+0x170/0x3f0 [ 853.858561] ? __wake_up_common_lock+0x9d/0x140 [ 853.863241] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 853.867992] _raw_spin_lock_irqsave+0x8c/0xc0 [ 853.872477] ? __wake_up_common_lock+0x9d/0x140 [ 853.877136] __wake_up_common_lock+0x9d/0x140 [ 853.881625] ? __wake_up_common+0x5d0/0x5d0 [ 853.885940] ? _raw_spin_unlock_irqrestore+0xa3/0xe0 [ 853.891040] lbmIODone+0x3c6/0xe00 [ 853.894578] ? lock_acquire+0x170/0x3f0 [ 853.898543] ? lock_downgrade+0x740/0x740 [ 853.902682] ? lbmFree+0x100/0x100 [ 853.906215] bio_endio+0x27a/0x680 [ 853.909747] blk_update_request+0x2d0/0xa30 [ 853.914060] blk_mq_end_request+0x4c/0x1e0 [ 853.918287] __blk_mq_complete_request+0x30b/0x6c0 [ 853.923210] blk_mq_complete_request+0x52/0x60 [ 853.927850] loop_queue_work+0x227/0x1e80 [ 853.932036] ? finish_task_switch+0x178/0x610 [ 853.936523] ? finish_task_switch+0x14d/0x610 [ 853.941057] ? switch_mm_irqs_off+0x601/0xeb0 [ 853.945546] ? lo_fallocate.isra.0+0x120/0x120 [ 853.950118] ? __schedule+0x893/0x1de0 [ 853.953996] ? lock_acquire+0x170/0x3f0 [ 853.957963] ? _raw_spin_unlock_irq+0x24/0x80 [ 853.962452] kthread_worker_fn+0x271/0x6c0 [ 853.966681] ? __kthread_init_worker+0xf0/0xf0 [ 853.971250] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 853.976345] ? loop_get_status64+0x100/0x100 [ 853.980743] kthread+0x30d/0x420 [ 853.984100] ? kthread_create_on_node+0xd0/0xd0 [ 853.988795] ret_from_fork+0x24/0x30 [ 853.992499] [ 853.994171] Allocated by task 17193: [ 853.997876] kasan_kmalloc+0xeb/0x160 [ 854.001667] kmem_cache_alloc_trace+0x131/0x3d0 [ 854.006327] lmLogInit+0x2f1/0x12f0 [ 854.009943] lmLogOpen+0x6b1/0x10e0 [ 854.013615] jfs_mount_rw+0x236/0x430 [ 854.017408] jfs_fill_super+0x78a/0xab0 [ 854.021418] mount_bdev+0x2b3/0x360 [ 854.025036] mount_fs+0x92/0x2a0 [ 854.028394] vfs_kern_mount.part.0+0x5b/0x470 [ 854.032930] do_mount+0xe53/0x2a00 [ 854.036459] SyS_mount+0xa8/0x120 [ 854.039904] do_syscall_64+0x1d5/0x640 [ 854.043787] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 854.048963] [ 854.050579] Freed by task 17193: [ 854.053933] kasan_slab_free+0xc3/0x1a0 [ 854.057898] kfree+0xc9/0x250 [ 854.060991] lmLogInit+0xeaf/0x12f0 [ 854.064606] lmLogOpen+0x6b1/0x10e0 [ 854.068221] jfs_mount_rw+0x236/0x430 [ 854.072009] jfs_fill_super+0x78a/0xab0 [ 854.075969] mount_bdev+0x2b3/0x360 [ 854.079582] mount_fs+0x92/0x2a0 [ 854.082938] vfs_kern_mount.part.0+0x5b/0x470 [ 854.087427] do_mount+0xe53/0x2a00 [ 854.090955] SyS_mount+0xa8/0x120 [ 854.094401] do_syscall_64+0x1d5/0x640 [ 854.098281] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 854.103454] [ 854.105128] The buggy address belongs to the object at ffff8880af995e00 [ 854.105128] which belongs to the cache kmalloc-192 of size 192 [ 854.117778] The buggy address is located 104 bytes inside of [ 854.117778] 192-byte region [ffff8880af995e00, ffff8880af995ec0) [ 854.129635] The buggy address belongs to the page: [ 854.134556] page:ffffea0002be6540 count:1 mapcount:0 mapping:ffff8880af995000 index:0x0 [ 854.142688] flags: 0xfff00000000100(slab) [ 854.146831] raw: 00fff00000000100 ffff8880af995000 0000000000000000 0000000100000010 [ 854.154706] raw: ffffea0002bc1ea0 ffffea0002c2cea0 ffff88813fe80040 0000000000000000 [ 854.162744] page dumped because: kasan: bad access detected [ 854.168438] [ 854.170053] Memory state around the buggy address: [ 854.174968] ffff8880af995d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 854.182315] ffff8880af995d80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 854.189662] >ffff8880af995e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 854.197010] ^ [ 854.203838] ffff8880af995e80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 854.211190] ffff8880af995f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 854.218536] ================================================================== [ 854.229615] Disabling lock debugging due to kernel taint [ 854.235052] Kernel panic - not syncing: panic_on_warn set ... [ 854.235052] [ 854.242404] CPU: 0 PID: 17200 Comm: loop2 Tainted: G B 4.14.202-syzkaller #0 [ 854.250707] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 854.260049] Call Trace: [ 854.262629] dump_stack+0x1b2/0x283 [ 854.266308] panic+0x1f9/0x42d [ 854.269493] ? add_taint.cold+0x16/0x16 [ 854.273457] ? lock_downgrade+0x740/0x740 [ 854.277595] kasan_end_report+0x43/0x49 [ 854.281557] kasan_report_error.cold+0xa7/0x194 [ 854.286217] ? __lock_acquire+0x2c57/0x3f20 [ 854.290527] __asan_report_load8_noabort+0x68/0x70 [ 854.295449] ? assoc_array_gc+0x10c0/0x1110 [ 854.299763] ? __lock_acquire+0x2c57/0x3f20 [ 854.304074] __lock_acquire+0x2c57/0x3f20 [ 854.308211] ? kasan_slab_free+0x12d/0x1a0 [ 854.312437] ? kasan_slab_free+0xc3/0x1a0 [ 854.316574] ? kmem_cache_free+0x7c/0x2b0 [ 854.320712] ? mempool_free+0xcf/0x1d0 [ 854.324591] ? bio_free+0x11f/0x1a0 [ 854.328303] ? bio_put+0x59/0x70 [ 854.331661] ? lbmIODone+0xca/0xe00 [ 854.335310] ? bio_endio+0x27a/0x680 [ 854.339014] ? blk_update_request+0x2d0/0xa30 [ 854.343499] ? blk_mq_end_request+0x4c/0x1e0 [ 854.347899] ? trace_hardirqs_on+0x10/0x10 [ 854.352124] ? kthread_worker_fn+0x271/0x6c0 [ 854.356524] ? kthread+0x30d/0x420 [ 854.360060] ? ret_from_fork+0x24/0x30 [ 854.363941] ? lock_acquire+0x170/0x3f0 [ 854.367905] ? lock_downgrade+0x740/0x740 [ 854.372046] ? current_time+0x89/0xb0 [ 854.375839] lock_acquire+0x170/0x3f0 [ 854.379629] ? __wake_up_common_lock+0x9d/0x140 [ 854.384288] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 854.389034] _raw_spin_lock_irqsave+0x8c/0xc0 [ 854.393519] ? __wake_up_common_lock+0x9d/0x140 [ 854.398182] __wake_up_common_lock+0x9d/0x140 [ 854.402668] ? __wake_up_common+0x5d0/0x5d0 [ 854.406983] ? _raw_spin_unlock_irqrestore+0xa3/0xe0 [ 854.412078] lbmIODone+0x3c6/0xe00 [ 854.415610] ? lock_acquire+0x170/0x3f0 [ 854.419575] ? lock_downgrade+0x740/0x740 [ 854.423717] ? lbmFree+0x100/0x100 [ 854.427251] bio_endio+0x27a/0x680 [ 854.430796] blk_update_request+0x2d0/0xa30 [ 854.435109] blk_mq_end_request+0x4c/0x1e0 [ 854.439337] __blk_mq_complete_request+0x30b/0x6c0 [ 854.444263] blk_mq_complete_request+0x52/0x60 [ 854.448834] loop_queue_work+0x227/0x1e80 [ 854.452976] ? finish_task_switch+0x178/0x610 [ 854.457462] ? finish_task_switch+0x14d/0x610 [ 854.461947] ? switch_mm_irqs_off+0x601/0xeb0 [ 854.466433] ? lo_fallocate.isra.0+0x120/0x120 [ 854.471004] ? __schedule+0x893/0x1de0 [ 854.474881] ? lock_acquire+0x170/0x3f0 [ 854.478845] ? _raw_spin_unlock_irq+0x24/0x80 [ 854.483332] kthread_worker_fn+0x271/0x6c0 [ 854.487563] ? __kthread_init_worker+0xf0/0xf0 [ 854.492135] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 854.497260] ? loop_get_status64+0x100/0x100 [ 854.501662] kthread+0x30d/0x420 [ 854.505020] ? kthread_create_on_node+0xd0/0xd0 [ 854.509681] ret_from_fork+0x24/0x30 [ 854.514131] Kernel Offset: disabled [ 854.517740] Rebooting in 86400 seconds..