Warning: Permanently added '10.128.1.67' (ECDSA) to the list of known hosts.
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syzkaller login: [ 59.815296][ T5115] ==================================================================
[ 59.823423][ T5115] BUG: KASAN: use-after-free in io_fallback_tw+0x6d/0x119
[ 59.830572][ T5115] Read of size 8 at addr ffff88807f058448 by task syz-executor330/5115
[ 59.838837][ T5115]
[ 59.841175][ T5115] CPU: 1 PID: 5115 Comm: syz-executor330 Not tainted 6.2.0-rc3-next-20230112-syzkaller #0
[ 59.851084][ T5115] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 59.861161][ T5115] Call Trace:
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[ 59.864452][ T5115]
[ 59.867395][ T5115] dump_stack_lvl+0xd1/0x138
[ 59.872018][ T5115] print_report+0x15e/0x45d
[ 59.876547][ T5115] ? __phys_addr+0xc8/0x140
[ 59.881080][ T5115] ? io_fallback_tw+0x6d/0x119
[ 59.885872][ T5115] kasan_report+0xc0/0xf0
[ 59.890231][ T5115] ? io_fallback_tw+0x6d/0x119
[ 59.895026][ T5115] io_fallback_tw+0x6d/0x119
[ 59.899642][ T5115] tctx_task_work.cold+0xf/0x2c
[ 59.904525][ T5115] ? handle_tw_list+0x460/0x460
[ 59.909414][ T5115] task_work_run+0x16f/0x270
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[ 59.914043][ T5115] ? task_work_cancel+0x30/0x30
[ 59.918927][ T5115] ? do_raw_spin_unlock+0x175/0x230
[ 59.924156][ T5115] do_exit+0xb17/0x2a90
[ 59.928354][ T5115] ? lock_downgrade+0x6e0/0x6e0
[ 59.933229][ T5115] ? do_raw_spin_lock+0x124/0x2b0
[ 59.938280][ T5115] ? mm_update_next_owner+0x7b0/0x7b0
[ 59.943690][ T5115] ? rwlock_bug.part.0+0x90/0x90
[ 59.948657][ T5115] ? _raw_spin_unlock_irq+0x23/0x50
[ 59.953919][ T5115] do_group_exit+0xd4/0x2a0
[ 59.958459][ T5115] __x64_sys_exit_group+0x3e/0x50
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[ 59.963501][ T5115] do_syscall_64+0x39/0xb0
[ 59.967945][ T5115] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 59.973877][ T5115] RIP: 0033:0x7fd875e8fc99
[ 59.978314][ T5115] Code: Unable to access opcode bytes at 0x7fd875e8fc6f.
[ 59.985341][ T5115] RSP: 002b:00007ffd4b1c4fd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[ 59.993775][ T5115] RAX: ffffffffffffffda RBX: 00007fd875f04350 RCX: 00007fd875e8fc99
[ 60.001765][ T5115] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
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[ 60.009752][ T5115] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000000000
[ 60.017742][ T5115] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd875f04350
[ 60.025730][ T5115] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
[ 60.033729][ T5115]
[ 60.036757][ T5115]
[ 60.039090][ T5115] Allocated by task 5115:
[ 60.043423][ T5115] kasan_save_stack+0x22/0x40
[ 60.048124][ T5115] kasan_set_track+0x25/0x30
[ 60.052738][ T5115] __kasan_slab_alloc+0x7f/0x90
[ 60.057609][ T5115] kmem_cache_alloc_bulk+0x3aa/0x730
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[ 60.062914][ T5115] __io_alloc_req_refill+0xcc/0x40b
[ 60.068139][ T5115] io_submit_sqes.cold+0x7c/0xc2
[ 60.073104][ T5115] __do_sys_io_uring_enter+0x9e4/0x2c10
[ 60.078679][ T5115] do_syscall_64+0x39/0xb0
[ 60.083121][ T5115] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 60.089044][ T5115]
[ 60.091382][ T5115] Freed by task 34:
[ 60.095193][ T5115] kasan_save_stack+0x22/0x40
[ 60.099896][ T5115] kasan_set_track+0x25/0x30
[ 60.104520][ T5115] kasan_save_free_info+0x2e/0x40
[ 60.109581][ T5115] ____kasan_slab_free+0x160/0x1c0
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[ 60.114725][ T5115] slab_free_freelist_hook+0x8b/0x1c0
[ 60.120120][ T5115] kmem_cache_free+0xec/0x4e0
[ 60.124819][ T5115] io_req_caches_free+0x1a9/0x1e6
[ 60.129871][ T5115] io_ring_exit_work+0x2e7/0xc80
[ 60.134828][ T5115] process_one_work+0x9bf/0x1750
[ 60.139791][ T5115] worker_thread+0x669/0x1090
[ 60.144488][ T5115] kthread+0x2e8/0x3a0
[ 60.148603][ T5115] ret_from_fork+0x1f/0x30
[ 60.153046][ T5115]
[ 60.155381][ T5115] The buggy address belongs to the object at ffff88807f0583c0
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[ 60.155381][ T5115] which belongs to the cache io_kiocb of size 216
[ 60.169191][ T5115] The buggy address is located 136 bytes inside of
[ 60.169191][ T5115] 216-byte region [ffff88807f0583c0, ffff88807f058498)
[ 60.182486][ T5115]
[ 60.184818][ T5115] The buggy address belongs to the physical page:
[ 60.191235][ T5115] page:ffffea0001fc1600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7f058
[ 60.201491][ T5115] flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
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[ 60.209067][ T5115] raw: 00fff00000000200 ffff88801c5893c0 dead000000000122 0000000000000000
[ 60.217669][ T5115] raw: 0000000000000000 00000000000c000c 00000001ffffffff 0000000000000000
[ 60.226265][ T5115] page dumped because: kasan: bad access detected
[ 60.232701][ T5115] page_owner tracks the page as allocated
[ 60.238423][ T5115] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 5115, tgid 5115 (syz-executor330), ts 59796444534, free_ts 59697860463
[ 60.257032][ T5115] get_page_from_freelist+0x11bb/0x2d50
[ 60.262617][ T5115] __alloc_pages+0x1cb/0x5c0
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[ 60.267235][ T5115] alloc_pages+0x1aa/0x270
[ 60.271674][ T5115] allocate_slab+0x25f/0x350
[ 60.276281][ T5115] ___slab_alloc+0xa91/0x1400
[ 60.280987][ T5115] kmem_cache_alloc_bulk+0x23d/0x730
[ 60.286310][ T5115] __io_alloc_req_refill+0xcc/0x40b
[ 60.291532][ T5115] io_submit_sqes.cold+0x7c/0xc2
[ 60.296503][ T5115] __do_sys_io_uring_enter+0x9e4/0x2c10
[ 60.302084][ T5115] do_syscall_64+0x39/0xb0
[ 60.306527][ T5115] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 60.312456][ T5115] page last free stack trace:
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[ 60.317132][ T5115] free_pcp_prepare+0x4d0/0x910
[ 60.322008][ T5115] free_unref_page_list+0x176/0xcd0
[ 60.327243][ T5115] release_pages+0xcb1/0x1330
[ 60.331951][ T5115] tlb_batch_pages_flush+0xa8/0x1a0
[ 60.337176][ T5115] tlb_finish_mmu+0x14b/0x7e0
[ 60.341882][ T5115] exit_mmap+0x202/0x7c0
[ 60.346147][ T5115] __mmput+0x128/0x4c0
[ 60.350235][ T5115] mmput+0x60/0x70
[ 60.353977][ T5115] do_exit+0x9ac/0x2a90
[ 60.358178][ T5115] do_group_exit+0xd4/0x2a0
[ 60.362713][ T5115] __x64_sys_exit_group+0x3e/0x50
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[ 60.367753][ T5115] do_syscall_64+0x39/0xb0
[ 60.372191][ T5115] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 60.378158][ T5115]
[ 60.380488][ T5115] Memory state around the buggy address:
[ 60.386127][ T5115] ffff88807f058300: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc
[ 60.394202][ T5115] ffff88807f058380: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[ 60.402284][ T5115] >ffff88807f058400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 60.410360][ T5115] ^
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[ 60.416784][ T5115] ffff88807f058480: fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 60.424865][ T5115] ffff88807f058500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 60.432943][ T5115] ==================================================================
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[ 60.483649][ T5115] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 60.490877][ T5115] CPU: 1 PID: 5115 Comm: syz-executor330 Not tainted 6.2.0-rc3-next-20230112-syzkaller #0
[ 60.500786][ T5115] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 60.510861][ T5115] Call Trace:
[ 60.514147][ T5115]
[ 60.517093][ T5115] dump_stack_lvl+0xd1/0x138
[ 60.521708][ T5115] panic+0x2cc/0x626
[ 60.525643][ T5115] ? panic_print_sys_info.part.0+0x112/0x112
[ 60.531665][ T5115] ? preempt_schedule_thunk+0x1a/0x20
[ 60.537073][ T5115] ? preempt_schedule_common+0x59/0xc0
[ 60.542570][ T5115] check_panic_on_warn.cold+0x19/0x35
[ 60.547992][ T5115] end_report.part.0+0x36/0x73
[ 60.552780][ T5115] ? io_fallback_tw+0x6d/0x119
[ 60.557565][ T5115] kasan_report.cold+0xa/0xf
[ 60.562175][ T5115] ? io_fallback_tw+0x6d/0x119
[ 60.566951][ T5115] io_fallback_tw+0x6d/0x119
[ 60.571556][ T5115] tctx_task_work.cold+0xf/0x2c
[ 60.576419][ T5115] ? handle_tw_list+0x460/0x460
[ 60.581291][ T5115] task_work_run+0x16f/0x270
[ 60.585903][ T5115] ? task_work_cancel+0x30/0x30
[ 60.590775][ T5115] ? do_raw_spin_unlock+0x175/0x230
[ 60.595988][ T5115] do_exit+0xb17/0x2a90
[ 60.600164][ T5115] ? lock_downgrade+0x6e0/0x6e0
[ 60.605019][ T5115] ? do_raw_spin_lock+0x124/0x2b0
[ 60.610050][ T5115] ? mm_update_next_owner+0x7b0/0x7b0
[ 60.615439][ T5115] ? rwlock_bug.part.0+0x90/0x90
[ 60.620387][ T5115] ? _raw_spin_unlock_irq+0x23/0x50
[ 60.625609][ T5115] do_group_exit+0xd4/0x2a0
[ 60.630131][ T5115] __x64_sys_exit_group+0x3e/0x50
[ 60.635162][ T5115] do_syscall_64+0x39/0xb0
[ 60.639585][ T5115] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 60.645499][ T5115] RIP: 0033:0x7fd875e8fc99
[ 60.649917][ T5115] Code: Unable to access opcode bytes at 0x7fd875e8fc6f.
[ 60.656928][ T5115] RSP: 002b:00007ffd4b1c4fd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[ 60.665344][ T5115] RAX: ffffffffffffffda RBX: 00007fd875f04350 RCX: 00007fd875e8fc99
[ 60.673317][ T5115] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
[ 60.681288][ T5115] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000000000
[ 60.689261][ T5115] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd875f04350
[ 60.697232][ T5115] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
[ 60.705215][ T5115]
[ 60.708382][ T5115] Kernel Offset: disabled
[ 60.712700][ T5115] Rebooting in 86400 seconds..