Warning: Permanently added '10.128.0.247' (ECDSA) to the list of known hosts.
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syzkaller login: [   52.473469][    C1] ==================================================================
[   52.481778][    C1] BUG: KASAN: use-after-free in io_rsrc_node_ref_zero+0x5a/0x274
[   52.481922][   T10] ------------[ cut here ]------------
[   52.489547][    C1] Read of size 8 at addr ffff888013de6900 by task ksoftirqd/1/19
[   52.502780][    C1] 
[   52.505114][    C1] CPU: 1 PID: 19 Comm: ksoftirqd/1 Not tainted 5.17.0-rc4-syzkaller-00241-g7f25f0412c9e #0
[   52.508078][   T10] WARNING: CPU: 0 PID: 10 at fs/io_uring.c:9457 io_ring_exit_work+0x90f/0xbcc
[   52.515101][    C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   52.515120][    C1] Call Trace:
[   52.515130][    C1]  <TASK>
[   52.515142][    C1]  dump_stack_lvl+0xcd/0x134
[   52.515179][    C1]  print_address_description.constprop.0.cold+0x8d/0x336
[   52.515219][    C1]  ? io_rsrc_node_ref_zero+0x5a/0x274
[   52.524918][   T10] Modules linked in:
[   52.534126][    C1]  ? io_rsrc_node_ref_zero+0x5a/0x274
[   52.534164][    C1]  kasan_report.cold+0x83/0xdf
[   52.534205][    C1]  ? io_rsrc_node_ref_zero+0x5a/0x274
[   52.534240][    C1]  io_rsrc_node_ref_zero+0x5a/0x274
[   52.537704][   T10] 
[   52.540441][    C1]  percpu_ref_put_many.constprop.0+0x22b/0x260
[   52.540480][    C1]  rcu_core+0x7b1/0x1820
[   52.540525][    C1]  ? rcu_momentary_dyntick_idle+0x30/0x30
[   52.545294][   T10] CPU: 0 PID: 10 Comm: kworker/u4:1 Not tainted 5.17.0-rc4-syzkaller-00241-g7f25f0412c9e #0
[   52.552102][    C1]  __do_softirq+0x29b/0x9c2
[   52.552144][    C1]  ? __irq_exit_rcu+0x180/0x180
[   52.552180][    C1]  run_ksoftirqd+0x2d/0x60
[   52.558598][   T10] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   52.561413][    C1]  smpboot_thread_fn+0x645/0x9c0
[   52.561454][    C1]  ? smpboot_register_percpu_thread+0x370/0x370
[   52.561495][    C1]  kthread+0x2e9/0x3a0
[   52.561527][    C1]  ? kthread_complete_and_exit+0x40/0x40
[   52.567096][   T10] Workqueue: events_unbound io_ring_exit_work
[   52.571628][    C1]  ret_from_fork+0x1f/0x30
[   52.571681][    C1]  </TASK>
[   52.571697][    C1] 
[   52.571703][    C1] Allocated by task 4252:
[   52.571716][    C1]  kasan_save_stack+0x1e/0x40
[   52.578159][   T10] 
[   52.582261][    C1]  __kasan_kmalloc+0xa9/0xd0
[   52.582296][    C1]  io_rsrc_data_alloc+0x40/0x3b8
[   52.582326][    C1]  io_sqe_buffers_register.cold+0x1f/0x443
[   52.582358][    C1]  __do_sys_io_uring_register+0x109b/0x15a0
[   52.582389][    C1]  do_syscall_64+0x35/0xb0
[   52.584930][   T10] RIP: 0010:io_ring_exit_work+0x90f/0xbcc
[   52.590832][    C1]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[   52.590863][    C1] 
[   52.590870][    C1] Freed by task 4252:
[   52.590883][    C1]  kasan_save_stack+0x1e/0x40
[   52.590914][    C1]  kasan_set_track+0x21/0x30
[   52.590944][    C1]  kasan_set_free_info+0x20/0x30
[   52.595409][   T10] Code: ff 37 00 48 c1 ea 03 48 c1 e0 2a 80 3c 02 00 74 08 4c 89 e7 e8 94 a5 b3 f8 48 8b 83 e0 fe ff ff 49 39 c4 74 07 e8 93 13 6c f8 <0f> 0b e8 8c 13 6c f8 48 8d bb d8 fe ff ff b8 ff ff 37 00 48 89 fa
[   52.600870][    C1]  ____kasan_slab_free+0x126/0x160
[   52.600903][    C1]  slab_free_freelist_hook+0x8b/0x1c0
[   52.600934][    C1]  kfree+0xd0/0x390
[   52.600961][    C1]  __io_sqe_buffers_unregister+0xf6/0x18d
[   52.600990][    C1]  __do_sys_io_uring_register.cold+0x28f/0x1611
[   52.611295][   T10] RSP: 0018:ffffc90000cf7bc8 EFLAGS: 00010293
[   52.615514][    C1]  do_syscall_64+0x35/0xb0
[   52.615543][    C1]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[   52.615571][    C1] 
[   52.615578][    C1] The buggy address belongs to the object at ffff888013de6900
[   52.615578][    C1]  which belongs to the cache kmalloc-192 of size 192
[   52.615601][    C1] The buggy address is located 0 bytes inside of
[   52.615601][    C1]  192-byte region [ffff888013de6900, ffff888013de69c0)
[   52.615629][    C1] The buggy address belongs to the page:
[   52.620667][   T10] 
[   52.624847][    C1] page:ffffea00004f7980 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x13de6
[   52.624876][    C1] flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
[   52.624914][    C1] raw: 00fff00000000200 0000000000000000 dead000000000001 ffff888010c41a00
[   52.624941][    C1] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[   52.624957][    C1] page dumped because: kasan: bad access detected
[   52.624970][    C1] page_owner tracks the page as allocated
[   52.624978][    C1] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1, ts 2185796206, free_ts 0
[   52.635273][   T10] RAX: 0000000000000000 RBX: ffff88801f523688 RCX: 0000000000000000
[   52.639929][    C1]  get_page_from_freelist+0xa72/0x2f50
[   52.639961][    C1]  __alloc_pages+0x1b2/0x500
[   52.639987][    C1]  alloc_page_interleave+0x1e/0x200
[   52.640020][    C1]  alloc_pages+0x2b1/0x310
[   52.646503][   T10] RDX: ffff888011911d00 RSI: ffffffff890ccbed RDI: 0000000000000000
[   52.650300][    C1]  allocate_slab+0x27f/0x3c0
[   52.650330][    C1]  ___slab_alloc+0xbe1/0x12b0
[   52.650359][    C1]  __slab_alloc.constprop.0+0x4d/0xa0
[   52.650391][    C1]  kmem_cache_alloc_trace+0x2f8/0x3d0
[   52.656263][   T10] RBP: ffff88801f523000 R08: 0000000000000000 R09: 0000000000000000
[   52.662061][    C1]  call_usermodehelper_setup+0x97/0x340
[   52.662102][    C1]  kobject_uevent_env+0xf28/0x1600
[   52.662134][    C1]  param_sysfs_init+0x367/0x43b
[   52.662161][    C1]  do_one_initcall+0x103/0x650
[   52.662190][    C1]  kernel_init_freeable+0x6b1/0x73a
[   52.666807][   T10] R10: 0000000000000001 R11: 0000000000000000 R12: ffff88801f523568
[   52.669611][    C1]  kernel_init+0x1a/0x1d0
[   52.669644][    C1]  ret_from_fork+0x1f/0x30
[   52.669673][    C1] page_owner free stack trace missing
[   52.669688][    C1] 
[   52.669693][    C1] Memory state around the buggy address:
[   52.669708][    C1]  ffff888013de6800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   52.669729][    C1]  ffff888013de6880: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   52.672282][   T10] R13: ffff88801f523010 R14: ffffc90000cf7c20 R15: 0000000000000000
[   52.676343][    C1] >ffff888013de6900: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   52.676360][    C1]                    ^
[   52.676374][    C1]  ffff888013de6980: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   52.676393][    C1]  ffff888013de6a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   52.676409][    C1] ==================================================================
[   52.676419][    C1] Disabling lock debugging due to kernel taint
[   52.676525][    C1] Kernel panic - not syncing: panic_on_warn set ...
[   52.681517][   T10] FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
[   52.683394][    C1] CPU: 1 PID: 19 Comm: ksoftirqd/1 Tainted: G    B             5.17.0-rc4-syzkaller-00241-g7f25f0412c9e #0
[   52.683428][    C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   52.683444][    C1] Call Trace:
[   52.688121][   T10] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   52.692914][    C1]  <TASK>
[   52.692925][    C1]  dump_stack_lvl+0xcd/0x134
[   52.692959][    C1]  panic+0x2b0/0x6dd
[   52.698861][   T10] CR2: 0000000020000140 CR3: 000000007a99e000 CR4: 00000000003506f0
[   52.704615][    C1]  ? __warn_printk+0xf3/0xf3
[   52.704648][    C1]  ? asm_common_interrupt+0x1e/0x40
[   52.709178][   T10] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   52.714752][    C1]  ? trace_hardirqs_on+0x38/0x1c0
[   52.714783][    C1]  ? trace_hardirqs_on+0x51/0x1c0
[   52.714810][    C1]  ? io_rsrc_node_ref_zero+0x5a/0x274
[   52.720796][   T10] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   52.722979][    C1]  ? io_rsrc_node_ref_zero+0x5a/0x274
[   52.723012][    C1]  end_report.cold+0x63/0x6f
[   52.727093][   T10] Call Trace:
[   52.731632][    C1]  kasan_report.cold+0x71/0xdf
[   52.731672][    C1]  ? io_rsrc_node_ref_zero+0x5a/0x274
[   52.736362][   T10]  <TASK>
[   52.741160][    C1]  io_rsrc_node_ref_zero+0x5a/0x274
[   52.741196][    C1]  percpu_ref_put_many.constprop.0+0x22b/0x260
[   52.760931][   T10]  ? io_sq_thread_finish+0x1f6/0x1f6
[   52.765888][    C1]  rcu_core+0x7b1/0x1820
[   52.765926][    C1]  ? rcu_momentary_dyntick_idle+0x30/0x30
[   52.771417][   T10]  ? io_uring_del_tctx_node+0x20a/0x20a
[   52.775071][    C1]  __do_softirq+0x29b/0x9c2
[   52.775105][    C1]  ? __irq_exit_rcu+0x180/0x180
[   52.780936][   T10]  process_one_work+0x9ac/0x1650
[   52.787020][    C1]  run_ksoftirqd+0x2d/0x60
[   52.787053][    C1]  smpboot_thread_fn+0x645/0x9c0
[   52.793238][   T10]  ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[   52.797494][    C1]  ? smpboot_register_percpu_thread+0x370/0x370
[   52.797531][    C1]  kthread+0x2e9/0x3a0
[   52.803533][   T10]  ? rwlock_bug.part.0+0x90/0x90
[   52.805713][    C1]  ? kthread_complete_and_exit+0x40/0x40
[   52.805751][    C1]  ret_from_fork+0x1f/0x30
[   52.819905][   T10]  ? _raw_spin_lock_irq+0x41/0x50
[   52.832856][    C1]  </TASK>
[   52.833060][    C1] Kernel Offset: disabled
[   53.318132][    C1] Rebooting in 86400 seconds..