[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.167' (ECDSA) to the list of known hosts. syzkaller login: [ 284.659381] IPVS: ftp: loaded support on port[0] = 21 [ 284.667480] IPVS: ftp: loaded support on port[0] = 21 [ 284.668722] IPVS: ftp: loaded support on port[0] = 21 [ 284.678894] IPVS: ftp: loaded support on port[0] = 21 [ 284.685289] IPVS: ftp: loaded support on port[0] = 21 [ 284.696748] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 286.655315] Bluetooth: hci3: command 0x0409 tx timeout [ 286.655392] Bluetooth: hci0: command 0x0409 tx timeout [ 286.683063] Bluetooth: hci2: command 0x0409 tx timeout [ 286.693469] Bluetooth: hci1: command 0x0409 tx timeout [ 286.699747] Bluetooth: hci4: command 0x0409 tx timeout [ 286.706294] Bluetooth: hci5: command 0x0409 tx timeout executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 288.742789] Bluetooth: hci5: command 0x041b tx timeout [ 288.759821] Bluetooth: hci4: command 0x041b tx timeout [ 288.769122] Bluetooth: hci1: command 0x041b tx timeout [ 288.777075] Bluetooth: hci2: command 0x041b tx timeout [ 288.782513] Bluetooth: hci0: command 0x041b tx timeout [ 288.789257] Bluetooth: hci3: command 0x041b tx timeout executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 290.814003] Bluetooth: hci3: command 0x040f tx timeout [ 290.814009] Bluetooth: hci4: command 0x040f tx timeout [ 290.814036] Bluetooth: hci5: command 0x040f tx timeout [ 290.819596] Bluetooth: hci0: command 0x040f tx timeout [ 290.840518] Bluetooth: hci2: command 0x040f tx timeout [ 290.848124] Bluetooth: hci1: command 0x040f tx timeout executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 292.893981] Bluetooth: hci5: command 0x0419 tx timeout [ 292.894078] Bluetooth: hci1: command 0x0419 tx timeout [ 292.899671] Bluetooth: hci3: command 0x0419 tx timeout [ 292.906750] Bluetooth: hci2: command 0x0419 tx timeout [ 292.910986] Bluetooth: hci4: command 0x0419 tx timeout [ 292.916949] Bluetooth: hci0: command 0x0419 tx timeout executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 309.917407] ================================================================== [ 309.924939] BUG: KASAN: use-after-free in __lock_acquire+0x2cb4/0x3ff0 [ 309.931996] Read of size 8 at addr ffff8880a9b52a68 by task loop3/11297 [ 309.938748] [ 309.940385] CPU: 0 PID: 11297 Comm: loop3 Not tainted 4.19.183-syzkaller #0 [ 309.947492] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 309.956840] Call Trace: [ 309.959428] dump_stack+0x1fc/0x2ef [ 309.963053] print_address_description.cold+0x54/0x219 [ 309.968335] kasan_report_error.cold+0x8a/0x1b9 [ 309.973026] ? __lock_acquire+0x2cb4/0x3ff0 [ 309.977350] __asan_report_load8_noabort+0x88/0x90 [ 309.982557] ? __lock_acquire+0x2cb4/0x3ff0 [ 309.986885] __lock_acquire+0x2cb4/0x3ff0 [ 309.991118] ? trace_hardirqs_off+0x64/0x200 [ 309.995566] ? __kasan_slab_free+0x186/0x1f0 [ 309.999979] ? kmem_cache_free+0x7f/0x260 [ 310.004119] ? mempool_free+0xe3/0x370 [ 310.008003] ? bio_free+0xee/0x140 [ 310.011541] ? mark_held_locks+0xf0/0xf0 [ 310.015597] ? blk_update_request+0x30f/0xaf0 [ 310.020103] ? blk_mq_end_request+0x4a/0x340 [ 310.024506] ? lo_complete_rq+0x201/0x2d0 [ 310.028646] ? blk_mq_complete_request+0x472/0x660 [ 310.033568] ? loop_queue_work+0x274/0x20c0 [ 310.038047] ? kthread_worker_fn+0x292/0x730 [ 310.043315] ? kthread+0x33f/0x460 [ 310.046860] ? ret_from_fork+0x24/0x30 [ 310.051714] ? debug_check_no_obj_freed+0x201/0x490 [ 310.056728] ? lock_downgrade+0x720/0x720 [ 310.060871] ? lock_acquire+0x170/0x3c0 [ 310.064841] lock_acquire+0x170/0x3c0 [ 310.068648] ? __wake_up_common_lock+0xb0/0x170 [ 310.073512] _raw_spin_lock_irqsave+0x8c/0xc0 [ 310.078012] ? __wake_up_common_lock+0xb0/0x170 [ 310.082674] __wake_up_common_lock+0xb0/0x170 [ 310.087172] ? __wake_up_common+0x650/0x650 [ 310.091493] ? _raw_spin_unlock_irqrestore+0xa3/0xe0 [ 310.096595] lbmIODone+0x44b/0xf40 [ 310.100155] ? lock_downgrade+0x720/0x720 [ 310.104571] ? lock_acquire+0x170/0x3c0 [ 310.108627] ? scale_cookie_change.isra.0+0x380/0x380 [ 310.114386] ? lbmFree+0x100/0x100 [ 310.118007] bio_endio+0x471/0x810 [ 310.121555] blk_update_request+0x30f/0xaf0 [ 310.126137] blk_mq_end_request+0x4a/0x340 [ 310.130384] lo_complete_rq+0x201/0x2d0 [ 310.134355] blk_mq_complete_request+0x472/0x660 [ 310.139109] loop_queue_work+0x274/0x20c0 [ 310.144038] ? finish_task_switch+0x118/0x760 [ 310.148528] ? switch_mm_irqs_off+0x2e5/0x1340 [ 310.153107] ? lo_fallocate.isra.0+0x170/0x170 [ 310.157684] ? kthread_worker_fn+0x217/0x730 [ 310.162276] ? kthread_worker_fn+0x3e4/0x730 [ 310.166785] ? _raw_spin_unlock_irq+0x24/0x80 [ 310.171637] kthread_worker_fn+0x292/0x730 [ 310.176150] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 310.181599] ? __kthread_init_worker+0xf0/0xf0 [ 310.186180] ? __kthread_parkme+0x133/0x1e0 [ 310.190685] ? loop_info64_to_compat+0x5e0/0x5e0 [ 310.195523] kthread+0x33f/0x460 [ 310.198886] ? kthread_park+0x180/0x180 [ 310.202858] ret_from_fork+0x24/0x30 [ 310.206917] [ 310.208553] Allocated by task 11287: [ 310.212262] kmem_cache_alloc_trace+0x12f/0x380 [ 310.217076] lmLogInit+0x301/0x13d0 [ 310.220719] lmLogOpen+0x718/0x11e0 [ 310.224347] jfs_mount_rw+0x286/0x4b0 [ 310.228140] jfs_fill_super+0x814/0xb50 [ 310.232117] mount_bdev+0x2fc/0x3b0 [ 310.235733] mount_fs+0xa3/0x310 [ 310.239175] vfs_kern_mount.part.0+0x68/0x470 [ 310.243675] do_mount+0x113c/0x2f10 [ 310.247292] ksys_mount+0xcf/0x130 [ 310.250826] __x64_sys_mount+0xba/0x150 [ 310.254791] do_syscall_64+0xf9/0x620 [ 310.258594] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 310.263854] [ 310.265470] Freed by task 11287: [ 310.269171] kfree+0xcc/0x210 [ 310.272267] lmLogInit+0xf85/0x13d0 [ 310.275885] lmLogOpen+0x718/0x11e0 [ 310.279515] jfs_mount_rw+0x286/0x4b0 [ 310.283303] jfs_fill_super+0x814/0xb50 [ 310.287446] mount_bdev+0x2fc/0x3b0 [ 310.291163] mount_fs+0xa3/0x310 [ 310.294522] vfs_kern_mount.part.0+0x68/0x470 [ 310.300657] do_mount+0x113c/0x2f10 [ 310.304277] ksys_mount+0xcf/0x130 [ 310.307811] __x64_sys_mount+0xba/0x150 [ 310.311788] do_syscall_64+0xf9/0x620 [ 310.315603] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 310.320950] [ 310.322569] The buggy address belongs to the object at ffff8880a9b52a00 [ 310.322569] which belongs to the cache kmalloc-192 of size 192 [ 310.335218] The buggy address is located 104 bytes inside of [ 310.335218] 192-byte region [ffff8880a9b52a00, ffff8880a9b52ac0) [ 310.350639] The buggy address belongs to the page: [ 310.355558] page:ffffea0002a6d480 count:1 mapcount:0 mapping:ffff88813bff0040 index:0x0 [ 310.363702] flags: 0xfff00000000100(slab) [ 310.367845] raw: 00fff00000000100 ffffea0002d26a48 ffffea0002764488 ffff88813bff0040 [ 310.375720] raw: 0000000000000000 ffff8880a9b52000 0000000100000010 0000000000000000 [ 310.383583] page dumped because: kasan: bad access detected [ 310.389403] [ 310.391026] Memory state around the buggy address: [ 310.397078] ffff8880a9b52900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 310.404436] ffff8880a9b52980: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 310.411789] >ffff8880a9b52a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 310.419420] ^ [ 310.426297] ffff8880a9b52a80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 310.433701] ffff8880a9b52b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 310.441072] ================================================================== [ 310.448710] Disabling lock debugging due to kernel taint [ 310.454257] Kernel panic - not syncing: panic_on_warn set ... [ 310.454257] [ 310.461618] CPU: 0 PID: 11297 Comm: loop3 Tainted: G B 4.19.183-syzkaller #0 [ 310.470142] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 310.479600] Call Trace: [ 310.482279] dump_stack+0x1fc/0x2ef [ 310.485902] panic+0x26a/0x50e [ 310.489141] ? __warn_printk+0xf3/0xf3 [ 310.493288] ? lock_downgrade+0x720/0x720 [ 310.497605] ? print_shadow_for_address+0xb8/0x114 [ 310.502546] ? trace_hardirqs_off+0x64/0x200 [ 310.506953] kasan_end_report+0x43/0x49 [ 310.510932] kasan_report_error.cold+0xa7/0x1b9 [ 310.515644] ? __lock_acquire+0x2cb4/0x3ff0 [ 310.519959] __asan_report_load8_noabort+0x88/0x90 [ 310.524916] ? __lock_acquire+0x2cb4/0x3ff0 [ 310.529233] __lock_acquire+0x2cb4/0x3ff0 [ 310.533393] ? trace_hardirqs_off+0x64/0x200 [ 310.537815] ? __kasan_slab_free+0x186/0x1f0 [ 310.542217] ? kmem_cache_free+0x7f/0x260 [ 310.546360] ? mempool_free+0xe3/0x370 [ 310.550241] ? bio_free+0xee/0x140 [ 310.553790] ? mark_held_locks+0xf0/0xf0 [ 310.557848] ? blk_update_request+0x30f/0xaf0 [ 310.562337] ? blk_mq_end_request+0x4a/0x340 [ 310.566830] ? lo_complete_rq+0x201/0x2d0 [ 310.571581] ? blk_mq_complete_request+0x472/0x660 [ 310.576614] ? loop_queue_work+0x274/0x20c0 [ 310.580946] ? kthread_worker_fn+0x292/0x730 [ 310.585459] ? kthread+0x33f/0x460 [ 310.589014] ? ret_from_fork+0x24/0x30 [ 310.592900] ? debug_check_no_obj_freed+0x201/0x490 [ 310.597913] ? lock_downgrade+0x720/0x720 [ 310.602056] ? lock_acquire+0x170/0x3c0 [ 310.606035] lock_acquire+0x170/0x3c0 [ 310.609845] ? __wake_up_common_lock+0xb0/0x170 [ 310.614512] _raw_spin_lock_irqsave+0x8c/0xc0 [ 310.619004] ? __wake_up_common_lock+0xb0/0x170 [ 310.623668] __wake_up_common_lock+0xb0/0x170 [ 310.628161] ? __wake_up_common+0x650/0x650 [ 310.632483] ? _raw_spin_unlock_irqrestore+0xa3/0xe0 [ 310.637604] lbmIODone+0x44b/0xf40 [ 310.641166] ? lock_downgrade+0x720/0x720 [ 310.645306] ? lock_acquire+0x170/0x3c0 [ 310.649278] ? scale_cookie_change.isra.0+0x380/0x380 [ 310.654466] ? lbmFree+0x100/0x100 [ 310.658089] bio_endio+0x471/0x810 [ 310.661628] blk_update_request+0x30f/0xaf0 [ 310.665964] blk_mq_end_request+0x4a/0x340 [ 310.670371] lo_complete_rq+0x201/0x2d0 [ 310.674347] blk_mq_complete_request+0x472/0x660 [ 310.679132] loop_queue_work+0x274/0x20c0 [ 310.683384] ? finish_task_switch+0x118/0x760 [ 310.687880] ? switch_mm_irqs_off+0x2e5/0x1340 [ 310.692470] ? lo_fallocate.isra.0+0x170/0x170 [ 310.697053] ? kthread_worker_fn+0x217/0x730 [ 310.701462] ? kthread_worker_fn+0x3e4/0x730 [ 310.705868] ? _raw_spin_unlock_irq+0x24/0x80 [ 310.710535] kthread_worker_fn+0x292/0x730 [ 310.714792] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 310.719367] ? __kthread_init_worker+0xf0/0xf0 [ 310.723947] ? __kthread_parkme+0x133/0x1e0 [ 310.728465] ? loop_info64_to_compat+0x5e0/0x5e0 [ 310.733332] kthread+0x33f/0x460 [ 310.737044] ? kthread_park+0x180/0x180 [ 310.741012] ret_from_fork+0x24/0x30 [ 310.745015] Kernel Offset: disabled [ 310.748656] Rebooting in 86400 seconds..