Warning: Permanently added '10.128.0.167' (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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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: [ 1863.661960] ================================================================== [ 1863.669450] BUG: KASAN: use-after-free in lbmIODone+0xb75/0xe00 [ 1863.675497] Read of size 4 at addr ffff8880ab3b7208 by task loop4/17752 [ 1863.682227] [ 1863.683839] CPU: 1 PID: 17752 Comm: loop4 Not tainted 4.14.295-syzkaller #0 [ 1863.690912] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 1863.700245] Call Trace: [ 1863.702819] dump_stack+0x1b2/0x281 [ 1863.706448] print_address_description.cold+0x54/0x1d3 [ 1863.711719] kasan_report_error.cold+0x8a/0x191 [ 1863.716390] ? lbmIODone+0xb75/0xe00 [ 1863.720086] __asan_report_load4_noabort+0x68/0x70 [ 1863.725001] ? _raw_spin_lock_irqsave+0x10/0xc0 [ 1863.729650] ? lbmIODone+0xb75/0xe00 [ 1863.733349] lbmIODone+0xb75/0xe00 [ 1863.736873] ? lock_acquire+0x170/0x3f0 [ 1863.740853] ? lock_downgrade+0x740/0x740 [ 1863.744983] ? lbmFree+0x100/0x100 [ 1863.748509] bio_endio+0x290/0x690 [ 1863.752028] ? blk_account_io_completion.part.0+0x28c/0x3a0 [ 1863.757717] blk_update_request+0x2d0/0xa90 [ 1863.762048] blk_mq_end_request+0x4c/0x1e0 [ 1863.766263] __blk_mq_complete_request+0x30b/0x6c0 [ 1863.771289] blk_mq_complete_request+0x52/0x60 [ 1863.775856] loop_queue_work+0x228/0x21e0 [ 1863.779987] ? _raw_spin_unlock_irq+0x5a/0x80 [ 1863.784461] ? finish_task_switch+0x178/0x610 [ 1863.788935] ? finish_task_switch+0x14d/0x610 [ 1863.793414] ? switch_mm_irqs_off+0x2d2/0xeb0 [ 1863.797894] ? lo_fallocate.isra.0+0x120/0x120 [ 1863.802454] ? __schedule+0x893/0x1de0 [ 1863.806329] ? lock_acquire+0x170/0x3f0 [ 1863.810280] ? lock_downgrade+0x740/0x740 [ 1863.814407] ? _raw_spin_unlock_irq+0x24/0x80 [ 1863.818880] kthread_worker_fn+0x271/0x6c0 [ 1863.823098] ? __kthread_init_worker+0xf0/0xf0 [ 1863.827659] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 1863.832741] ? loop_get_status64+0x100/0x100 [ 1863.837127] kthread+0x30d/0x420 [ 1863.840470] ? kthread_create_on_node+0xd0/0xd0 [ 1863.845115] ret_from_fork+0x24/0x30 [ 1863.848808] [ 1863.850413] Allocated by task 17742: [ 1863.854104] kasan_kmalloc+0xeb/0x160 [ 1863.857880] kmem_cache_alloc_trace+0x131/0x3d0 [ 1863.862526] lmLogInit+0x2f1/0x1300 [ 1863.866138] lmLogOpen+0x6b1/0x10e0 [ 1863.869738] jfs_mount_rw+0x236/0x430 [ 1863.873512] jfs_fill_super+0x78a/0xab0 [ 1863.877464] mount_bdev+0x2b3/0x360 [ 1863.881066] mount_fs+0x92/0x2a0 [ 1863.884409] vfs_kern_mount.part.0+0x5b/0x470 [ 1863.888883] do_mount+0xe65/0x2a30 [ 1863.892401] SyS_mount+0xa8/0x120 [ 1863.895832] do_syscall_64+0x1d5/0x640 [ 1863.899693] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 1863.904855] [ 1863.906459] Freed by task 7997: [ 1863.909715] kasan_slab_free+0xc3/0x1a0 [ 1863.913669] kfree+0xc9/0x250 [ 1863.916754] lmLogShutdown+0x2a9/0x540 [ 1863.920620] lmLogClose+0x464/0x5d0 [ 1863.924224] jfs_umount+0x25f/0x310 [ 1863.927827] jfs_put_super+0x61/0x140 [ 1863.931604] generic_shutdown_super+0x144/0x370 [ 1863.936256] kill_block_super+0x95/0xe0 [ 1863.940221] deactivate_locked_super+0x6c/0xd0 [ 1863.944780] deactivate_super+0x7f/0xa0 [ 1863.948729] cleanup_mnt+0x186/0x2c0 [ 1863.952418] task_work_run+0x11f/0x190 [ 1863.956282] exit_to_usermode_loop+0x1ad/0x200 [ 1863.960845] do_syscall_64+0x4a3/0x640 [ 1863.964709] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 1863.969871] [ 1863.971477] The buggy address belongs to the object at ffff8880ab3b7200 [ 1863.971477] which belongs to the cache kmalloc-192 of size 192 [ 1863.984107] The buggy address is located 8 bytes inside of [ 1863.984107] 192-byte region [ffff8880ab3b7200, ffff8880ab3b72c0) [ 1863.995779] The buggy address belongs to the page: [ 1864.000682] page:ffffea0002acedc0 count:1 mapcount:0 mapping:ffff8880ab3b7000 index:0x0 [ 1864.008802] flags: 0xfff00000000100(slab) [ 1864.012930] raw: 00fff00000000100 ffff8880ab3b7000 0000000000000000 0000000100000010 [ 1864.020797] raw: ffffea00025ae020 ffffea00026ebc20 ffff88813fe74040 0000000000000000 [ 1864.028650] page dumped because: kasan: bad access detected [ 1864.034347] [ 1864.035949] Memory state around the buggy address: [ 1864.040855] ffff8880ab3b7100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1864.048189] ffff8880ab3b7180: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 1864.055526] >ffff8880ab3b7200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1864.062859] ^ [ 1864.066460] ffff8880ab3b7280: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 1864.073795] ffff8880ab3b7300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1864.081127] ================================================================== [ 1864.088478] Disabling lock debugging due to kernel taint [ 1864.093901] Kernel panic - not syncing: panic_on_warn set ... [ 1864.093901] [ 1864.101241] CPU: 1 PID: 17752 Comm: loop4 Tainted: G B 4.14.295-syzkaller #0 [ 1864.109527] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 1864.118862] Call Trace: [ 1864.121437] dump_stack+0x1b2/0x281 [ 1864.125046] panic+0x1f9/0x42d [ 1864.128216] ? add_taint.cold+0x16/0x16 [ 1864.132169] ? lock_downgrade+0x740/0x740 [ 1864.136368] kasan_end_report+0x43/0x49 [ 1864.140329] kasan_report_error.cold+0xa7/0x191 [ 1864.144981] ? lbmIODone+0xb75/0xe00 [ 1864.148685] __asan_report_load4_noabort+0x68/0x70 [ 1864.153594] ? _raw_spin_lock_irqsave+0x10/0xc0 [ 1864.158245] ? lbmIODone+0xb75/0xe00 [ 1864.161941] lbmIODone+0xb75/0xe00 [ 1864.165467] ? lock_acquire+0x170/0x3f0 [ 1864.169424] ? lock_downgrade+0x740/0x740 [ 1864.173552] ? lbmFree+0x100/0x100 [ 1864.177073] bio_endio+0x290/0x690 [ 1864.180593] ? blk_account_io_completion.part.0+0x28c/0x3a0 [ 1864.186296] blk_update_request+0x2d0/0xa90 [ 1864.190600] blk_mq_end_request+0x4c/0x1e0 [ 1864.194815] __blk_mq_complete_request+0x30b/0x6c0 [ 1864.199718] blk_mq_complete_request+0x52/0x60 [ 1864.204279] loop_queue_work+0x228/0x21e0 [ 1864.208446] ? _raw_spin_unlock_irq+0x5a/0x80 [ 1864.212921] ? finish_task_switch+0x178/0x610 [ 1864.217399] ? finish_task_switch+0x14d/0x610 [ 1864.221871] ? switch_mm_irqs_off+0x2d2/0xeb0 [ 1864.226351] ? lo_fallocate.isra.0+0x120/0x120 [ 1864.230911] ? __schedule+0x893/0x1de0 [ 1864.234892] ? lock_acquire+0x170/0x3f0 [ 1864.238867] ? lock_downgrade+0x740/0x740 [ 1864.243003] ? _raw_spin_unlock_irq+0x24/0x80 [ 1864.247480] kthread_worker_fn+0x271/0x6c0 [ 1864.251697] ? __kthread_init_worker+0xf0/0xf0 [ 1864.256253] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 1864.261333] ? loop_get_status64+0x100/0x100 [ 1864.265718] kthread+0x30d/0x420 [ 1864.269060] ? kthread_create_on_node+0xd0/0xd0 [ 1864.273711] ret_from_fork+0x24/0x30 [ 1864.277472] Kernel Offset: disabled [ 1864.281079] Rebooting in 86400 seconds..