DUID 00:04:bb:a2:40:ae:48:ac:17:b5:4c:fd:37:63:df:39:12:a9
forked to background, child pid 4644
[ 30.595376][ T4645] 8021q: adding VLAN 0 to HW filter on device bond0
[ 30.606447][ T4645] eql: remember to turn off Van-Jacobson compression on your slave devices
Starting sshd: OK
syzkaller
syzkaller login: [ 76.010445][ T7] cfg80211: failed to load regulatory.db
Warning: Permanently added '10.128.0.55' (ECDSA) to the list of known hosts.
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[ 175.947804][ T8677] ==================================================================
[ 175.955916][ T8677] BUG: KASAN: use-after-free in io_wq_worker_running+0x114/0x130
[ 175.963647][ T8677] Read of size 4 at addr ffff888021ae4004 by task iou-wrk-8635/8677
[ 175.971608][ T8677]
[ 175.973910][ T8677] CPU: 0 PID: 8677 Comm: iou-wrk-8635 Not tainted 6.2.0-rc3-syzkaller-00009-g5a41237ad1d4 #0
[ 175.984040][ T8677] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 175.994080][ T8677] Call Trace:
[ 175.997348][ T8677]
[ 176.000266][ T8677] dump_stack_lvl+0xd1/0x138
[ 176.004864][ T8677] print_report+0x15e/0x45d
[ 176.009366][ T8677] ? __phys_addr+0xc8/0x140
[ 176.013864][ T8677] ? io_wq_worker_running+0x114/0x130
[ 176.019236][ T8677] kasan_report+0xbf/0x1f0
[ 176.023649][ T8677] ? io_wq_worker_running+0x114/0x130
[ 176.029007][ T8677] io_wq_worker_running+0x114/0x130
[ 176.034198][ T8677] schedule_preempt_disabled+0x13/0x20
[ 176.039653][ T8677] __mutex_lock+0xa48/0x1360
[ 176.044222][ T8677] ? io_wq_submit_work+0x5f7/0xdc0
[ 176.049321][ T8677] ? mutex_lock_io_nested+0x11a0/0x11a0
[ 176.054854][ T8677] ? find_held_lock+0x2d/0x110
[ 176.059603][ T8677] ? io_worker_handle_work+0x599/0x1c60
[ 176.065132][ T8677] ? lock_downgrade+0x6e0/0x6e0
[ 176.069965][ T8677] ? do_raw_spin_lock+0x124/0x2b0
[ 176.074968][ T8677] io_wq_submit_work+0x5f7/0xdc0
[ 176.079901][ T8677] io_worker_handle_work+0xc41/0x1c60
[ 176.085269][ T8677] io_wqe_worker+0xa5b/0xe40
[ 176.089858][ T8677] ? io_worker_handle_work+0x1c60/0x1c60
[ 176.095483][ T8677] ? ret_from_fork+0x8/0x30
[ 176.099968][ T8677] ? lock_downgrade+0x6e0/0x6e0
[ 176.104805][ T8677] ? do_raw_spin_lock+0x124/0x2b0
[ 176.109808][ T8677] ? rwlock_bug.part.0+0x90/0x90
[ 176.114725][ T8677] ? _raw_spin_unlock_irq+0x23/0x50
[ 176.119914][ T8677] ? io_worker_handle_work+0x1c60/0x1c60
[ 176.125529][ T8677] ret_from_fork+0x1f/0x30
[ 176.129928][ T8677]
[ 176.132924][ T8677]
[ 176.135232][ T8677] Allocated by task 8635:
[ 176.139533][ T8677] kasan_save_stack+0x22/0x40
[ 176.144187][ T8677] kasan_set_track+0x25/0x30
[ 176.148763][ T8677] __kasan_kmalloc+0xa5/0xb0
[ 176.153347][ T8677] create_io_worker+0x10c/0x630
[ 176.158190][ T8677] io_wqe_enqueue+0x6c3/0xbc0
[ 176.162866][ T8677] io_queue_iowq+0x282/0x5c0
[ 176.167442][ T8677] io_queue_sqe_fallback+0xf3/0x190
[ 176.172622][ T8677] io_submit_sqes+0x11db/0x1e60
[ 176.177464][ T8677] __do_sys_io_uring_enter+0xc1d/0x2540
[ 176.182992][ T8677] do_syscall_64+0x39/0xb0
[ 176.187392][ T8677] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 176.193267][ T8677]
[ 176.195590][ T8677] Freed by task 8677:
[ 176.199559][ T8677] kasan_save_stack+0x22/0x40
[ 176.204222][ T8677] kasan_set_track+0x25/0x30
[ 176.208801][ T8677] kasan_save_free_info+0x2e/0x40
[ 176.213808][ T8677] ____kasan_slab_free+0x160/0x1c0
[ 176.218908][ T8677] slab_free_freelist_hook+0x8b/0x1c0
[ 176.224275][ T8677] __kmem_cache_free+0xaf/0x3b0
[ 176.229112][ T8677] io_queue_worker_create+0x567/0x660
[ 176.234470][ T8677] io_wqe_dec_running+0x1e4/0x240
[ 176.239477][ T8677] io_wq_worker_sleeping+0xa6/0xc0
[ 176.244575][ T8677] schedule+0x16e/0x1b0
[ 176.248725][ T8677] schedule_preempt_disabled+0x13/0x20
[ 176.254178][ T8677] __mutex_lock+0xa48/0x1360
[ 176.258753][ T8677] io_wq_submit_work+0x5f7/0xdc0
[ 176.263675][ T8677] io_worker_handle_work+0xc41/0x1c60
[ 176.269031][ T8677] io_wqe_worker+0xa5b/0xe40
[ 176.273604][ T8677] ret_from_fork+0x1f/0x30
[ 176.278010][ T8677]
[ 176.280318][ T8677] Last potentially related work creation:
[ 176.286019][ T8677] kasan_save_stack+0x22/0x40
[ 176.290675][ T8677] __kasan_record_aux_stack+0xbc/0xd0
[ 176.296035][ T8677] task_work_add+0x7f/0x2c0
[ 176.300519][ T8677] io_queue_worker_create+0x41d/0x660
[ 176.305933][ T8677] io_wqe_dec_running+0x1e4/0x240
[ 176.310951][ T8677] io_wq_worker_sleeping+0xa6/0xc0
[ 176.316057][ T8677] schedule+0x16e/0x1b0
[ 176.320211][ T8677] schedule_preempt_disabled+0x13/0x20
[ 176.325664][ T8677] __mutex_lock+0xa48/0x1360
[ 176.330233][ T8677] io_wq_submit_work+0x5f7/0xdc0
[ 176.335166][ T8677] io_worker_handle_work+0xc41/0x1c60
[ 176.340532][ T8677] io_wqe_worker+0xa5b/0xe40
[ 176.345117][ T8677] ret_from_fork+0x1f/0x30
[ 176.349528][ T8677]
[ 176.351829][ T8677] The buggy address belongs to the object at ffff888021ae4000
[ 176.351829][ T8677] which belongs to the cache kmalloc-512 of size 512
[ 176.365870][ T8677] The buggy address is located 4 bytes inside of
[ 176.365870][ T8677] 512-byte region [ffff888021ae4000, ffff888021ae4200)
[ 176.378950][ T8677]
[ 176.381253][ T8677] The buggy address belongs to the physical page:
[ 176.387639][ T8677] page:ffffea000086b900 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x21ae4
[ 176.397772][ T8677] head:ffffea000086b900 order:2 compound_mapcount:0 subpages_mapcount:0 compound_pincount:0
[ 176.407826][ T8677] flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
[ 176.415796][ T8677] raw: 00fff00000010200 ffff888012441c80 dead000000000122 0000000000000000
[ 176.424359][ T8677] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 176.432927][ T8677] page dumped because: kasan: bad access detected
[ 176.439325][ T8677] page_owner tracks the page as allocated
[ 176.445014][ T8677] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 8635, tgid 8634 (syz-executor290), ts 175604119328, free_ts 172868743417
[ 176.466779][ T8677] get_page_from_freelist+0x119c/0x2ce0
[ 176.472309][ T8677] __alloc_pages+0x1cb/0x5b0
[ 176.476881][ T8677] allocate_slab+0xa7/0x350
[ 176.481376][ T8677] ___slab_alloc+0xa91/0x1400
[ 176.486037][ T8677] __slab_alloc.constprop.0+0x56/0xa0
[ 176.491395][ T8677] __kmem_cache_alloc_node+0x1a4/0x430
[ 176.496836][ T8677] kmalloc_node_trace+0x21/0x60
[ 176.501677][ T8677] create_io_worker+0x10c/0x630
[ 176.506511][ T8677] io_wqe_enqueue+0x6c3/0xbc0
[ 176.511181][ T8677] io_queue_iowq+0x282/0x5c0
[ 176.515763][ T8677] io_queue_sqe_fallback+0xf3/0x190
[ 176.520960][ T8677] io_submit_sqes+0x11db/0x1e60
[ 176.525812][ T8677] __do_sys_io_uring_enter+0xc1d/0x2540
[ 176.531359][ T8677] do_syscall_64+0x39/0xb0
[ 176.535771][ T8677] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 176.541650][ T8677] page last free stack trace:
[ 176.546300][ T8677] free_pcp_prepare+0x65c/0xc00
[ 176.551136][ T8677] free_unref_page+0x1d/0x490
[ 176.555801][ T8677] __unfreeze_partials+0x17c/0x1a0
[ 176.560906][ T8677] qlist_free_all+0x6a/0x170
[ 176.565477][ T8677] kasan_quarantine_reduce+0x192/0x220
[ 176.570925][ T8677] __kasan_slab_alloc+0x66/0x90
[ 176.575761][ T8677] kmem_cache_alloc+0x1e4/0x430
[ 176.580589][ T8677] vm_area_alloc+0x20/0x100
[ 176.585071][ T8677] mmap_region+0x44c/0x1dd0
[ 176.589565][ T8677] do_mmap+0x831/0xf60
[ 176.593612][ T8677] vm_mmap_pgoff+0x1af/0x280
[ 176.598190][ T8677] vm_mmap+0x96/0xc0
[ 176.602067][ T8677] elf_map+0x229/0x2a0
[ 176.606117][ T8677] load_elf_binary+0xd79/0x4f10
[ 176.610957][ T8677] bprm_execve+0x7ef/0x19f0
[ 176.615437][ T8677] do_execveat_common+0x724/0x890
[ 176.620442][ T8677]
[ 176.622752][ T8677] Memory state around the buggy address:
[ 176.628357][ T8677] ffff888021ae3f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 176.636401][ T8677] ffff888021ae3f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
executing program
executing program
[ 176.644454][ T8677] >ffff888021ae4000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 176.652488][ T8677] ^
[ 176.656529][ T8677] ffff888021ae4080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 176.664566][ T8677] ffff888021ae4100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 176.672602][ T8677] ==================================================================
[ 176.815729][ T8677] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 176.822965][ T8677] CPU: 0 PID: 8677 Comm: iou-wrk-8635 Not tainted 6.2.0-rc3-syzkaller-00009-g5a41237ad1d4 #0
[ 176.833133][ T8677] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 176.843170][ T8677] Call Trace:
[ 176.846432][ T8677]
[ 176.849345][ T8677] dump_stack_lvl+0xd1/0x138
[ 176.853928][ T8677] panic+0x2cc/0x626
[ 176.857810][ T8677] ? panic_print_sys_info.part.0+0x110/0x110
[ 176.863775][ T8677] ? preempt_schedule_thunk+0x1a/0x20
[ 176.869157][ T8677] ? preempt_schedule_common+0x59/0xc0
[ 176.874641][ T8677] check_panic_on_warn.cold+0x19/0x35
[ 176.880035][ T8677] end_report.part.0+0x36/0x73
[ 176.884831][ T8677] ? io_wq_worker_running+0x114/0x130
[ 176.890224][ T8677] kasan_report.cold+0xa/0xf
[ 176.894841][ T8677] ? io_wq_worker_running+0x114/0x130
[ 176.900202][ T8677] io_wq_worker_running+0x114/0x130
[ 176.905390][ T8677] schedule_preempt_disabled+0x13/0x20
[ 176.910845][ T8677] __mutex_lock+0xa48/0x1360
[ 176.915413][ T8677] ? io_wq_submit_work+0x5f7/0xdc0
[ 176.920521][ T8677] ? mutex_lock_io_nested+0x11a0/0x11a0
[ 176.926066][ T8677] ? find_held_lock+0x2d/0x110
[ 176.930833][ T8677] ? io_worker_handle_work+0x599/0x1c60
[ 176.936378][ T8677] ? lock_downgrade+0x6e0/0x6e0
[ 176.941207][ T8677] ? do_raw_spin_lock+0x124/0x2b0
[ 176.946220][ T8677] io_wq_submit_work+0x5f7/0xdc0
[ 176.951152][ T8677] io_worker_handle_work+0xc41/0x1c60
[ 176.956511][ T8677] io_wqe_worker+0xa5b/0xe40
[ 176.961085][ T8677] ? io_worker_handle_work+0x1c60/0x1c60
[ 176.966701][ T8677] ? ret_from_fork+0x8/0x30
[ 176.971202][ T8677] ? lock_downgrade+0x6e0/0x6e0
[ 176.976066][ T8677] ? do_raw_spin_lock+0x124/0x2b0
[ 176.981109][ T8677] ? rwlock_bug.part.0+0x90/0x90
[ 176.986059][ T8677] ? _raw_spin_unlock_irq+0x23/0x50
[ 176.991250][ T8677] ? io_worker_handle_work+0x1c60/0x1c60
[ 176.996888][ T8677] ret_from_fork+0x1f/0x30
[ 177.001297][ T8677]
[ 177.004437][ T8677] Kernel Offset: disabled
[ 177.008752][ T8677] Rebooting in 86400 seconds..