DUID 00:04:11:31:ea:d8:bb:db:47:a8:80:cb:7d:0b:3c:d8:ea:74 forked to background, child pid 3177 [ 21.703435][ T3178] 8021q: adding VLAN 0 to HW filter on device bond0 [ 21.712220][ T3178] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.117' (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 syzkaller login: [ 62.918802][ T3656] ================================================================== [ 62.926867][ T3656] BUG: KASAN: use-after-free in __wake_up_common+0x637/0x650 [ 62.934246][ T3656] Read of size 8 at addr ffff88801d9c98b0 by task syz-executor615/3656 [ 62.942465][ T3656] [ 62.944769][ T3656] CPU: 1 PID: 3656 Comm: syz-executor615 Tainted: G W 5.17.0-syzkaller-01442-gb47d5a4f6b8d #0 [ 62.956376][ T3656] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.966413][ T3656] Call Trace: [ 62.969680][ T3656] [ 62.972591][ T3656] dump_stack_lvl+0xcd/0x134 [ 62.977178][ T3656] print_address_description.constprop.0.cold+0x8d/0x336 [ 62.984299][ T3656] ? __wake_up_common+0x637/0x650 [ 62.989323][ T3656] ? __wake_up_common+0x637/0x650 [ 62.994357][ T3656] kasan_report.cold+0x83/0xdf [ 62.999123][ T3656] ? rwlock_bug.part.0+0x50/0x90 [ 63.004051][ T3656] ? __wake_up_common+0x637/0x650 [ 63.009070][ T3656] __wake_up_common+0x637/0x650 [ 63.013910][ T3656] __wake_up_common_lock+0xd0/0x130 [ 63.019189][ T3656] ? __wake_up_common+0x650/0x650 [ 63.024246][ T3656] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 63.030041][ T3656] ? trace_hardirqs_on+0x5b/0x1c0 [ 63.035051][ T3656] ? _raw_spin_unlock_irqrestore+0x3d/0x70 [ 63.040846][ T3656] ? tty_port_close+0x120/0x170 [ 63.045683][ T3656] tty_release+0x657/0x1200 [ 63.050193][ T3656] __fput+0x286/0x9f0 [ 63.054177][ T3656] ? tty_release_struct+0xe0/0xe0 [ 63.059185][ T3656] task_work_run+0xdd/0x1a0 [ 63.063673][ T3656] do_exit+0xaff/0x29d0 [ 63.067919][ T3656] ? lock_downgrade+0x6e0/0x6e0 [ 63.072758][ T3656] ? mm_update_next_owner+0x7a0/0x7a0 [ 63.078133][ T3656] do_group_exit+0xd2/0x2f0 [ 63.082621][ T3656] __x64_sys_exit_group+0x3a/0x50 [ 63.087642][ T3656] do_syscall_64+0x35/0xb0 [ 63.092068][ T3656] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 63.097963][ T3656] RIP: 0033:0x7fab020e3c99 [ 63.102371][ T3656] Code: Unable to access opcode bytes at RIP 0x7fab020e3c6f. [ 63.109718][ T3656] RSP: 002b:00007ffc1b99dd78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 63.118127][ T3656] RAX: ffffffffffffffda RBX: 00007fab02158330 RCX: 00007fab020e3c99 [ 63.126077][ T3656] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 63.134033][ T3656] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000000000 [ 63.141994][ T3656] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fab02158330 [ 63.149949][ T3656] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 63.157928][ T3656] [ 63.160933][ T3656] [ 63.163242][ T3656] Allocated by task 3646: [ 63.167549][ T3656] kasan_save_stack+0x1e/0x40 [ 63.172217][ T3656] __kasan_kmalloc+0xa9/0xd0 [ 63.176794][ T3656] io_arm_poll_handler+0x39d/0x940 [ 63.181892][ T3656] io_queue_sqe_arm_apoll+0x6d/0x430 [ 63.187174][ T3656] io_submit_sqes+0x7dda/0x9310 [ 63.192011][ T3656] __do_sys_io_uring_enter+0x9f1/0x1520 [ 63.197560][ T3656] do_syscall_64+0x35/0xb0 [ 63.201963][ T3656] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 63.207846][ T3656] [ 63.210164][ T3656] Freed by task 3646: [ 63.214125][ T3656] kasan_save_stack+0x1e/0x40 [ 63.218809][ T3656] kasan_set_track+0x21/0x30 [ 63.223400][ T3656] kasan_set_free_info+0x20/0x30 [ 63.228326][ T3656] ____kasan_slab_free+0x126/0x160 [ 63.233420][ T3656] slab_free_freelist_hook+0x8b/0x1c0 [ 63.238776][ T3656] kfree+0xd0/0x390 [ 63.242565][ T3656] io_clean_op+0x20a/0xd90 [ 63.246979][ T3656] __io_req_complete_post+0x88c/0xc90 [ 63.252335][ T3656] io_req_complete_post+0x56/0x1d0 [ 63.257433][ T3656] io_apoll_task_func+0x1df/0x230 [ 63.262443][ T3656] tctx_task_work+0x1a2/0x1380 [ 63.267194][ T3656] task_work_run+0xdd/0x1a0 [ 63.271695][ T3656] do_exit+0xaff/0x29d0 [ 63.275851][ T3656] do_group_exit+0xd2/0x2f0 [ 63.280339][ T3656] __x64_sys_exit_group+0x3a/0x50 [ 63.285349][ T3656] do_syscall_64+0x35/0xb0 [ 63.289765][ T3656] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 63.295710][ T3656] [ 63.298023][ T3656] The buggy address belongs to the object at ffff88801d9c9880 [ 63.298023][ T3656] which belongs to the cache kmalloc-96 of size 96 [ 63.312007][ T3656] The buggy address is located 48 bytes inside of [ 63.312007][ T3656] 96-byte region [ffff88801d9c9880, ffff88801d9c98e0) [ 63.325186][ T3656] The buggy address belongs to the page: [ 63.330816][ T3656] page:ffffea0000767240 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1d9c9 [ 63.341057][ T3656] flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) [ 63.348618][ T3656] raw: 00fff00000000200 0000000000000000 dead000000000001 ffff888010c41780 [ 63.357192][ T3656] raw: 0000000000000000 0000000080200020 00000001ffffffff 0000000000000000 [ 63.365805][ T3656] page dumped because: kasan: bad access detected [ 63.372196][ T3656] page_owner tracks the page as allocated [ 63.377891][ T3656] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1, ts 8813028597, free_ts 8646004658 [ 63.393511][ T3656] get_page_from_freelist+0xa72/0x2f50 [ 63.398974][ T3656] __alloc_pages+0x1b2/0x500 [ 63.403569][ T3656] alloc_page_interleave+0x1e/0x200 [ 63.408752][ T3656] alloc_pages+0x2b1/0x310 [ 63.413171][ T3656] allocate_slab+0x27f/0x3c0 [ 63.417754][ T3656] ___slab_alloc+0xbe1/0x12b0 [ 63.422431][ T3656] __slab_alloc.constprop.0+0x4d/0xa0 [ 63.427786][ T3656] kmem_cache_alloc_trace+0x2f8/0x3d0 [ 63.433151][ T3656] usb_hub_create_port_device+0xb7/0xd70 [ 63.438800][ T3656] hub_probe.cold+0x247d/0x2a77 [ 63.443645][ T3656] usb_probe_interface+0x315/0x7f0 [ 63.448754][ T3656] really_probe+0x245/0xcc0 [ 63.453268][ T3656] __driver_probe_device+0x338/0x4d0 [ 63.458541][ T3656] driver_probe_device+0x4c/0x1a0 [ 63.463555][ T3656] __device_attach_driver+0x20b/0x2f0 [ 63.468915][ T3656] bus_for_each_drv+0x15f/0x1e0 [ 63.473755][ T3656] page last free stack trace: [ 63.478407][ T3656] free_pcp_prepare+0x374/0x870 [ 63.483243][ T3656] free_unref_page+0x19/0x690 [ 63.487903][ T3656] __vunmap+0x798/0xc50 [ 63.492043][ T3656] free_work+0x58/0x70 [ 63.496095][ T3656] process_one_work+0x9ac/0x1650 [ 63.501016][ T3656] worker_thread+0x657/0x1110 [ 63.505675][ T3656] kthread+0x2e9/0x3a0 [ 63.509729][ T3656] ret_from_fork+0x1f/0x30 [ 63.514142][ T3656] [ 63.516463][ T3656] Memory state around the buggy address: [ 63.522073][ T3656] ffff88801d9c9780: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc [ 63.530122][ T3656] ffff88801d9c9800: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc [ 63.538186][ T3656] >ffff88801d9c9880: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 63.546230][ T3656] ^ [ 63.551841][ T3656] ffff88801d9c9900: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc [ 63.559884][ T3656] ffff88801d9c9980: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc [ 63.567927][ T3656] ================================================================== [ 63.575972][ T3656] Kernel panic - not syncing: panic_on_warn set ... [ 63.582558][ T3656] CPU: 1 PID: 3656 Comm: syz-executor615 Tainted: G B W 5.17.0-syzkaller-01442-gb47d5a4f6b8d #0 [ 63.594191][ T3656] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.604258][ T3656] Call Trace: [ 63.607534][ T3656] [ 63.610729][ T3656] dump_stack_lvl+0xcd/0x134 [ 63.615308][ T3656] panic+0x2b0/0x6dd [ 63.619191][ T3656] ? __warn_printk+0xf3/0xf3 [ 63.623774][ T3656] ? __wake_up_common+0x637/0x650 [ 63.628783][ T3656] ? __wake_up_common+0x637/0x650 [ 63.633792][ T3656] ? __wake_up_common+0x637/0x650 [ 63.638803][ T3656] end_report.cold+0x63/0x6f [ 63.643388][ T3656] kasan_report.cold+0x71/0xdf [ 63.648152][ T3656] ? rwlock_bug.part.0+0x50/0x90 [ 63.653089][ T3656] ? __wake_up_common+0x637/0x650 [ 63.658151][ T3656] __wake_up_common+0x637/0x650 [ 63.663007][ T3656] __wake_up_common_lock+0xd0/0x130 [ 63.668201][ T3656] ? __wake_up_common+0x650/0x650 [ 63.673213][ T3656] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 63.679793][ T3656] ? trace_hardirqs_on+0x5b/0x1c0 [ 63.684804][ T3656] ? _raw_spin_unlock_irqrestore+0x3d/0x70 [ 63.690604][ T3656] ? tty_port_close+0x120/0x170 [ 63.695447][ T3656] tty_release+0x657/0x1200 [ 63.699941][ T3656] __fput+0x286/0x9f0 [ 63.703928][ T3656] ? tty_release_struct+0xe0/0xe0 [ 63.708950][ T3656] task_work_run+0xdd/0x1a0 [ 63.713446][ T3656] do_exit+0xaff/0x29d0 [ 63.717593][ T3656] ? lock_downgrade+0x6e0/0x6e0 [ 63.722433][ T3656] ? mm_update_next_owner+0x7a0/0x7a0 [ 63.727798][ T3656] do_group_exit+0xd2/0x2f0 [ 63.732287][ T3656] __x64_sys_exit_group+0x3a/0x50 [ 63.737313][ T3656] do_syscall_64+0x35/0xb0 [ 63.741716][ T3656] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 63.747594][ T3656] RIP: 0033:0x7fab020e3c99 [ 63.751991][ T3656] Code: Unable to access opcode bytes at RIP 0x7fab020e3c6f. [ 63.759333][ T3656] RSP: 002b:00007ffc1b99dd78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 63.767926][ T3656] RAX: ffffffffffffffda RBX: 00007fab02158330 RCX: 00007fab020e3c99 [ 63.775881][ T3656] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 63.783839][ T3656] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000000000 [ 63.791819][ T3656] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fab02158330 [ 63.799788][ T3656] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 63.807846][ T3656] [ 63.811014][ T3656] Kernel Offset: disabled [ 63.815324][ T3656] Rebooting in 86400 seconds..