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BUG: KASAN: double-free in slab_free mm/slub.c:3599 [inline]
BUG: KASAN: double-free in __kmem_cache_free+0xab/0x3b0 mm/slub.c:3612
Free of addr ffff8880233f2800 by task syz-executor.3/10033

CPU: 1 PID: 10033 Comm: syz-executor.3 Not tainted 6.0.0-rc6-next-20220923-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:284 [inline]
 print_report+0x15e/0x45d mm/kasan/report.c:395
 kasan_report_invalid_free+0x97/0x1b0 mm/kasan/report.c:460
 ____kasan_slab_free+0x185/0x1c0 mm/kasan/common.c:225
 kasan_slab_free include/linux/kasan.h:177 [inline]
 slab_free_hook mm/slub.c:1669 [inline]
 slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1695
 slab_free mm/slub.c:3599 [inline]
 __kmem_cache_free+0xab/0x3b0 mm/slub.c:3612
 io_clean_op+0x581/0xb10 io_uring/io_uring.c:1699
 io_free_batch_list+0x46f/0x7e0 io_uring/io_uring.c:1305
 __io_submit_flush_completions+0x22b/0x2e0 io_uring/io_uring.c:1343
 io_submit_flush_completions io_uring/io_uring.c:171 [inline]
 ctx_flush_and_put+0xdf/0x1b0 io_uring/io_uring.c:1003
 tctx_task_work+0x153/0x4a0 io_uring/io_uring.c:1087
 task_work_run+0x16b/0x270 kernel/task_work.c:179
 get_signal+0x1c3/0x2430 kernel/signal.c:2635
 arch_do_signal_or_restart+0x82/0x2300 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:203
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:296
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6e3fa8a5a9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6e40bf5168 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: 0000000000000800 RBX: 00007f6e3fbabf80 RCX: 00007f6e3fa8a5a9
RDX: 0000000000000000 RSI: 00000000000040b3 RDI: 0000000000000003
RBP: 00007f6e3fae5580 R08: 0000000020000000 R09: 0000000000000008
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc260833ef R14: 00007f6e40bf5300 R15: 0000000000022000
 </TASK>

Allocated by task 10033:
 kasan_save_stack+0x1e/0x40 mm/kasan/common.c:45
 kasan_set_track+0x21/0x30 mm/kasan/common.c:52
 ____kasan_kmalloc mm/kasan/common.c:371 [inline]
 ____kasan_kmalloc mm/kasan/common.c:330 [inline]
 __kasan_kmalloc+0xa1/0xb0 mm/kasan/common.c:380
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slab_common.c:934 [inline]
 __kmalloc+0x54/0xc0 mm/slab_common.c:947
 kmalloc include/linux/slab.h:564 [inline]
 io_alloc_async_data+0x9b/0x160 io_uring/io_uring.c:1590
 io_msg_alloc_async io_uring/net.c:138 [inline]
 io_msg_alloc_async_prep io_uring/net.c:147 [inline]
 io_sendmsg_prep_async+0x19b/0x3c0 io_uring/net.c:221
 io_req_prep_async+0x1d9/0x300 io_uring/io_uring.c:1613
 io_submit_sqe io_uring/io_uring.c:2137 [inline]
 io_submit_sqes+0xfcd/0x1df0 io_uring/io_uring.c:2276
 __do_sys_io_uring_enter+0xac6/0x2410 io_uring/io_uring.c:3216
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Freed by task 10033:
 kasan_save_stack+0x1e/0x40 mm/kasan/common.c:45
 kasan_set_track+0x21/0x30 mm/kasan/common.c:52
 kasan_save_free_info+0x2a/0x40 mm/kasan/generic.c:511
 ____kasan_slab_free mm/kasan/common.c:236 [inline]
 ____kasan_slab_free+0x160/0x1c0 mm/kasan/common.c:200
 kasan_slab_free include/linux/kasan.h:177 [inline]
 slab_free_hook mm/slub.c:1669 [inline]
 slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1695
 slab_free mm/slub.c:3599 [inline]
 __kmem_cache_free+0xab/0x3b0 mm/slub.c:3612
 io_send_zc_cleanup+0x133/0x180 io_uring/net.c:916
 io_clean_op+0xf4/0xb10 io_uring/io_uring.c:1684
 io_free_batch_list+0x46f/0x7e0 io_uring/io_uring.c:1305
 __io_submit_flush_completions+0x22b/0x2e0 io_uring/io_uring.c:1343
 io_submit_flush_completions io_uring/io_uring.c:171 [inline]
 ctx_flush_and_put+0xdf/0x1b0 io_uring/io_uring.c:1003
 tctx_task_work+0x153/0x4a0 io_uring/io_uring.c:1087
 task_work_run+0x16b/0x270 kernel/task_work.c:179
 get_signal+0x1c3/0x2430 kernel/signal.c:2635
 arch_do_signal_or_restart+0x82/0x2300 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:203
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:296
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Last potentially related work creation:
 kasan_save_stack+0x1e/0x40 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:481
 insert_work+0x48/0x350 kernel/workqueue.c:1358
 __queue_work+0x693/0x13b0 kernel/workqueue.c:1517
 call_timer_fn+0x1da/0x7c0 kernel/time/timer.c:1474
 expire_timers kernel/time/timer.c:1514 [inline]
 __run_timers.part.0+0x4a3/0xaf0 kernel/time/timer.c:1790
 __run_timers kernel/time/timer.c:1768 [inline]
 run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803
 __do_softirq+0x1f7/0xad8 kernel/softirq.c:571

The buggy address belongs to the object at ffff8880233f2800
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 0 bytes inside of
 512-byte region [ffff8880233f2800, ffff8880233f2a00)

The buggy address belongs to the physical page:
page:ffffea00008cfc00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffffea0001f25320 pfn:0x233f0
head:ffffea00008cfc00 order:2 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffff888011841c80 dead00000010000e ffff8880233f3800
raw: ffffea0001f25320 ffffea0001e10a20 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 2173, tgid 2173 (kworker/u4:5), ts 10310527408, free_ts 0
 prep_new_page mm/page_alloc.c:2538 [inline]
 get_page_from_freelist+0x1092/0x2d20 mm/page_alloc.c:4287
 __alloc_pages+0x1c7/0x5a0 mm/page_alloc.c:5546
 alloc_pages+0x1a6/0x270 mm/mempolicy.c:2280
 alloc_slab_page mm/slub.c:1739 [inline]
 allocate_slab+0x213/0x300 mm/slub.c:1884
 new_slab mm/slub.c:1937 [inline]
 ___slab_alloc+0xac1/0x1430 mm/slub.c:3119
 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3217
 slab_alloc_node mm/slub.c:3302 [inline]
 __kmem_cache_alloc_node+0x18a/0x3d0 mm/slub.c:3375
 kmalloc_trace+0x22/0x60 mm/slab_common.c:1014
 kmalloc include/linux/slab.h:559 [inline]
 kzalloc include/linux/slab.h:695 [inline]
 alloc_bprm+0x51/0x900 fs/exec.c:1510
 kernel_execve+0xab/0x500 fs/exec.c:1969
 call_usermodehelper_exec_async+0x2e3/0x580 kernel/umh.c:113
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
page_owner free stack trace missing

Memory state around the buggy address:
 ffff8880233f2700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8880233f2780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8880233f2800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff8880233f2880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880233f2900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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