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BUG: KASAN: double-free or invalid-free in slab_free mm/slub.c:3210 [inline]
BUG: KASAN: double-free or invalid-free in kfree+0xc2/0x570 mm/slub.c:4198

CPU: 1 PID: 23966 Comm: syz-executor.0 Not tainted 5.10.99-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack_lvl+0x81/0xac lib/dump_stack.c:118
 print_address_description.constprop.0+0x24/0x150 mm/kasan/report.c:233
 kasan_report_invalid_free+0x56/0x80 mm/kasan/report.c:358
 ____kasan_slab_free mm/kasan/common.c:340 [inline]
 __kasan_slab_free+0x134/0x150 mm/kasan/common.c:368
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:1602 [inline]
 slab_free_freelist_hook+0x9b/0x1a0 mm/slub.c:1628
 slab_free mm/slub.c:3210 [inline]
 kfree+0xc2/0x570 mm/slub.c:4198
 io_put_identity fs/io_uring.c:1262 [inline]
 io_req_clean_work fs/io_uring.c:1300 [inline]
 io_dismantle_req+0xa17/0xf50 fs/io_uring.c:1896
 io_req_free_batch fs/io_uring.c:2202 [inline]
 io_iopoll_complete+0x545/0x1220 fs/io_uring.c:2377
 io_do_iopoll+0x4e9/0x750 fs/io_uring.c:2433
 io_iopoll_try_reap_events.part.0+0x113/0x1d0 fs/io_uring.c:2472
 io_iopoll_try_reap_events fs/io_uring.c:2465 [inline]
 io_ring_ctx_wait_and_kill+0x1b4/0x5c0 fs/io_uring.c:8577
 io_uring_release+0x3d/0x50 fs/io_uring.c:8604
 __fput+0x1a5/0x770 fs/file_table.c:281
 ____fput+0x9/0x10 fs/file_table.c:314
 task_work_run+0xc2/0x140 kernel/task_work.c:154
 exit_task_work include/linux/task_work.h:30 [inline]
 do_exit+0x966/0x23f0 kernel/exit.c:813
 do_group_exit+0xe6/0x290 kernel/exit.c:910
 get_signal+0x312/0x1ad0 kernel/signal.c:2780
 arch_do_signal+0x87/0x2640 arch/x86/kernel/signal.c:805
 exit_to_user_mode_loop kernel/entry/common.c:161 [inline]
 exit_to_user_mode_prepare+0xb2/0xe0 kernel/entry/common.c:191
 syscall_exit_to_user_mode+0x27/0x160 kernel/entry/common.c:266
 do_syscall_64+0x3f/0x80 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f08e07f8ae9
Code: Unable to access opcode bytes at RIP 0x7f08e07f8abf.
RSP: 002b:00007f08e074e218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f08e090c028 RCX: 00007f08e07f8ae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f08e090c028
RBP: 00007f08e090c020 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f08e090c02c
R13: 00007ffc865e998f R14: 00007f08e074e300 R15: 0000000000022000

Allocated by task 23966:
 kasan_save_stack+0x23/0x50 mm/kasan/common.c:38
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:428 [inline]
 ____kasan_kmalloc mm/kasan/common.c:507 [inline]
 ____kasan_kmalloc mm/kasan/common.c:466 [inline]
 __kasan_kmalloc+0xa9/0xe0 mm/kasan/common.c:516
 kasan_kmalloc include/linux/kasan.h:269 [inline]
 kmem_cache_alloc_trace+0x1a9/0x340 mm/slub.c:2981
 kmalloc include/linux/slab.h:552 [inline]
 io_uring_alloc_task_context+0x43/0x2a0 fs/io_uring.c:7903
 io_uring_add_task_file+0x1c8/0x250 fs/io_uring.c:8782
 io_uring_install_fd fs/io_uring.c:9316 [inline]
 io_uring_create fs/io_uring.c:9518 [inline]
 io_uring_setup+0x174e/0x2dc0 fs/io_uring.c:9557
 __do_sys_io_uring_setup fs/io_uring.c:9563 [inline]
 __se_sys_io_uring_setup fs/io_uring.c:9560 [inline]
 __x64_sys_io_uring_setup+0x4f/0x70 fs/io_uring.c:9560
 do_syscall_64+0x32/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

The buggy address belongs to the object at ffff88811408b700
 which belongs to the cache kmalloc-192 of size 192
The buggy address is located 88 bytes inside of
 192-byte region [ffff88811408b700, ffff88811408b7c0)
The buggy address belongs to the page:
page:ffffea00045022c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11408b
flags: 0x8000000000000200(slab)
raw: 8000000000000200 ffffea00044d14c0 0000000200000002 ffff888100043380
raw: 0000000000000000 0000000000100010 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 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 165, ts 3561203725, free_ts 3561120640
 set_page_owner include/linux/page_owner.h:35 [inline]
 post_alloc_hook+0x102/0x130 mm/page_alloc.c:2385
 prep_new_page mm/page_alloc.c:2391 [inline]
 get_page_from_freelist+0x1ef5/0x3030 mm/page_alloc.c:4063
 __alloc_pages_nodemask+0x28a/0x1e70 mm/page_alloc.c:5107
 __alloc_pages include/linux/gfp.h:529 [inline]
 __alloc_pages_node include/linux/gfp.h:542 [inline]
 alloc_pages_node include/linux/gfp.h:556 [inline]
 alloc_pages include/linux/gfp.h:575 [inline]
 alloc_slab_page mm/slub.c:1672 [inline]
 allocate_slab+0x32b/0x480 mm/slub.c:1815
 new_slab mm/slub.c:1876 [inline]
 new_slab_objects mm/slub.c:2635 [inline]
 ___slab_alloc.constprop.0+0x339/0x750 mm/slub.c:2798
 __slab_alloc mm/slub.c:2838 [inline]
 slab_alloc_node mm/slub.c:2920 [inline]
 slab_alloc mm/slub.c:2962 [inline]
 kmem_cache_alloc_trace+0x2d0/0x340 mm/slub.c:2979
 kmalloc include/linux/slab.h:552 [inline]
 kzalloc include/linux/slab.h:664 [inline]
 kernfs_fop_open+0x244/0xc20 fs/kernfs/file.c:628
 do_dentry_open+0x417/0x1020 fs/open.c:819
 vfs_open+0x9a/0xc0 fs/open.c:942
 do_open fs/namei.c:3327 [inline]
 path_openat+0x1dc6/0x38e0 fs/namei.c:3444
 do_filp_open+0x17d/0x3b0 fs/namei.c:3471
 do_sys_openat2+0x120/0x3c0 fs/open.c:1211
 do_sys_open fs/open.c:1227 [inline]
 __do_sys_openat fs/open.c:1243 [inline]
 __se_sys_openat fs/open.c:1238 [inline]
 __x64_sys_openat+0x124/0x200 fs/open.c:1238
 do_syscall_64+0x32/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:28 [inline]
 free_pages_prepare mm/page_alloc.c:1331 [inline]
 free_pcp_prepare+0x18f/0x200 mm/page_alloc.c:1405
 free_unref_page_prepare mm/page_alloc.c:3291 [inline]
 free_unref_page+0x15/0x1c0 mm/page_alloc.c:3341
 free_the_page mm/page_alloc.c:5166 [inline]
 __free_pages+0x41/0x100 mm/page_alloc.c:5174
 free_pages mm/page_alloc.c:5185 [inline]
 free_pages+0x3f/0x80 mm/page_alloc.c:5181
 selinux_genfs_get_sid security/selinux/hooks.c:1326 [inline]
 inode_doinit_with_dentry+0x780/0x1400 security/selinux/hooks.c:1523
 selinux_d_instantiate+0x17/0x20 security/selinux/hooks.c:6351
 security_d_instantiate+0x47/0xc0 security/security.c:1948
 d_splice_alias+0x70/0xb40 fs/dcache.c:3029
 kernfs_iop_lookup+0x1a2/0x230 fs/kernfs/dir.c:1108
 __lookup_slow+0x19b/0x3d0 fs/namei.c:1628
 lookup_slow fs/namei.c:1645 [inline]
 walk_component+0x3ad/0x710 fs/namei.c:1940
 lookup_last fs/namei.c:2389 [inline]
 path_lookupat+0x112/0x6a0 fs/namei.c:2413
 filename_lookup+0x16d/0x500 fs/namei.c:2446
 user_path_at_empty+0xa2/0xf0 fs/namei.c:2726
 user_path_at include/linux/namei.h:59 [inline]
 vfs_statx+0xeb/0x330 fs/stat.c:193
 vfs_fstatat fs/stat.c:215 [inline]
 __do_sys_newfstatat+0x8b/0xe0 fs/stat.c:384

Memory state around the buggy address:
 ffff88811408b600: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88811408b680: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff88811408b700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                                    ^
 ffff88811408b780: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc
 ffff88811408b800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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