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BUG: KASAN: slab-use-after-free in __do_sys_io_cancel fs/aio.c:2207 [inline]
BUG: KASAN: slab-use-after-free in __se_sys_io_cancel fs/aio.c:2174 [inline]
BUG: KASAN: slab-use-after-free in __x64_sys_io_cancel+0x40d/0x4a0 fs/aio.c:2174
Read of size 4 at addr ffff88802a739520 by task syz-executor.3/12615

CPU: 0 PID: 12615 Comm: syz-executor.3 Not tainted 6.8.0-rc7-syzkaller-00020-g5847c9777c30 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0xc4/0x620 mm/kasan/report.c:488
 kasan_report+0xda/0x110 mm/kasan/report.c:601
 __do_sys_io_cancel fs/aio.c:2207 [inline]
 __se_sys_io_cancel fs/aio.c:2174 [inline]
 __x64_sys_io_cancel+0x40d/0x4a0 fs/aio.c:2174
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd8/0x270 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fd9db67dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd9dc3630c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d2
RAX: ffffffffffffffda RBX: 00007fd9db7abf80 RCX: 00007fd9db67dda9
RDX: 0000000000000000 RSI: 0000000020000100 RDI: 00007fd9dc342000
RBP: 00007fd9db6ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fd9db7abf80 R15: 00007ffcaf2901e8
 </TASK>

Allocated by task 12615:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:312 [inline]
 __kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:338
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3813 [inline]
 slab_alloc_node mm/slub.c:3860 [inline]
 kmem_cache_alloc+0x136/0x320 mm/slub.c:3867
 aio_get_req fs/aio.c:1060 [inline]
 io_submit_one+0x123/0x1df0 fs/aio.c:2050
 __do_sys_io_submit fs/aio.c:2113 [inline]
 __se_sys_io_submit fs/aio.c:2083 [inline]
 __x64_sys_io_submit+0x1c3/0x360 fs/aio.c:2083
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd8/0x270 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x6f/0x77

Freed by task 9460:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:589
 poison_slab_object mm/kasan/common.c:240 [inline]
 __kasan_slab_free+0x11d/0x1a0 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2121 [inline]
 slab_free mm/slub.c:4299 [inline]
 kmem_cache_free+0x129/0x360 mm/slub.c:4363
 iocb_destroy fs/aio.c:1112 [inline]
 iocb_put fs/aio.c:1212 [inline]
 iocb_put fs/aio.c:1208 [inline]
 aio_poll_complete_work+0x6b8/0xb70 fs/aio.c:1767
 process_one_work+0x88c/0x15e0 kernel/workqueue.c:2633
 process_scheduled_works kernel/workqueue.c:2706 [inline]
 worker_thread+0x8b9/0x12a0 kernel/workqueue.c:2787
 kthread+0x2c9/0x3b0 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243

Last potentially related work creation:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 __kasan_record_aux_stack+0xba/0xd0 mm/kasan/generic.c:551
 insert_work+0x38/0x230 kernel/workqueue.c:1653
 __queue_work+0x62e/0x11d0 kernel/workqueue.c:1802
 queue_work_on+0xf4/0x120 kernel/workqueue.c:1837
 queue_work include/linux/workqueue.h:548 [inline]
 schedule_work include/linux/workqueue.h:609 [inline]
 aio_poll_cancel fs/aio.c:1779 [inline]
 aio_poll_cancel+0x1c2/0x230 fs/aio.c:1771
 __do_sys_io_cancel fs/aio.c:2196 [inline]
 __se_sys_io_cancel fs/aio.c:2174 [inline]
 __x64_sys_io_cancel+0x1c5/0x4a0 fs/aio.c:2174
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd8/0x270 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x6f/0x77

The buggy address belongs to the object at ffff88802a739500
 which belongs to the cache aio_kiocb of size 216
The buggy address is located 32 bytes inside of
 freed 216-byte region [ffff88802a739500, ffff88802a7395d8)

The buggy address belongs to the physical page:
page:ffffea0000a9ce40 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88802a7393c0 pfn:0x2a739
flags: 0xfff00000000800(slab|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000800 ffff88801739edc0 dead000000000122 0000000000000000
raw: ffff88802a7393c0 00000000800c000b 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 6044, tgid 6042 (syz-executor.5), ts 308787748846, free_ts 308491500122
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x2d4/0x350 mm/page_alloc.c:1533
 prep_new_page mm/page_alloc.c:1540 [inline]
 get_page_from_freelist+0xa28/0x3780 mm/page_alloc.c:3311
 __alloc_pages+0x22f/0x2440 mm/page_alloc.c:4567
 __alloc_pages_node include/linux/gfp.h:238 [inline]
 alloc_pages_node include/linux/gfp.h:261 [inline]
 alloc_slab_page mm/slub.c:2190 [inline]
 allocate_slab mm/slub.c:2354 [inline]
 new_slab+0xcc/0x3a0 mm/slub.c:2407
 ___slab_alloc+0x4af/0x19a0 mm/slub.c:3540
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3625
 __slab_alloc_node mm/slub.c:3678 [inline]
 slab_alloc_node mm/slub.c:3850 [inline]
 kmem_cache_alloc+0x2ed/0x320 mm/slub.c:3867
 aio_get_req fs/aio.c:1060 [inline]
 io_submit_one+0x123/0x1df0 fs/aio.c:2050
 __do_sys_io_submit fs/aio.c:2113 [inline]
 __se_sys_io_submit fs/aio.c:2083 [inline]
 __x64_sys_io_submit+0x1c3/0x360 fs/aio.c:2083
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd8/0x270 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
page last free pid 5096 tgid 5096 stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1140 [inline]
 free_unref_page_prepare+0x527/0xb10 mm/page_alloc.c:2346
 free_unref_page+0x33/0x3c0 mm/page_alloc.c:2486
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x4e/0x140 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x192/0x1e0 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:322
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3813 [inline]
 slab_alloc_node mm/slub.c:3860 [inline]
 kmem_cache_alloc+0x136/0x320 mm/slub.c:3867
 getname_flags.part.0+0x50/0x4f0 fs/namei.c:140
 getname_flags+0x9c/0xf0 include/linux/audit.h:322
 user_path_at_empty+0x2c/0x60 fs/namei.c:2923
 user_path_at include/linux/namei.h:57 [inline]
 ksys_umount fs/namespace.c:1916 [inline]
 __do_sys_umount fs/namespace.c:1924 [inline]
 __se_sys_umount fs/namespace.c:1922 [inline]
 __x64_sys_umount+0x10e/0x1a0 fs/namespace.c:1922
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd8/0x270 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x6f/0x77

Memory state around the buggy address:
 ffff88802a739400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88802a739480: fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88802a739500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                               ^
 ffff88802a739580: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc
 ffff88802a739600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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