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BUG: KASAN: slab-use-after-free in __list_del_entry_valid_or_report+0x2f/0x140 lib/list_debug.c:49
Read of size 8 at addr ffff888052f67908 by task kworker/1:1/46

CPU: 1 UID: 0 PID: 46 Comm: kworker/1:1 Not tainted 6.11.0-syzkaller-12113-ge7ed34365879 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events binder_deferred_func
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x169/0x550 mm/kasan/report.c:488
 kasan_report+0x143/0x180 mm/kasan/report.c:601
 __list_del_entry_valid_or_report+0x2f/0x140 lib/list_debug.c:49
 __list_del_entry_valid include/linux/list.h:124 [inline]
 __list_del_entry include/linux/list.h:215 [inline]
 list_del_init include/linux/list.h:287 [inline]
 binder_dequeue_work_head_ilocked drivers/android/binder.c:540 [inline]
 binder_release_work+0xc7/0x480 drivers/android/binder.c:5110
 binder_deferred_release drivers/android/binder.c:6261 [inline]
 binder_deferred_func+0x1275/0x1460 drivers/android/binder.c:6296
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

Allocated by task 13745:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:257 [inline]
 __kmalloc_cache_noprof+0x19c/0x2c0 mm/slub.c:4296
 kmalloc_noprof include/linux/slab.h:878 [inline]
 kzalloc_noprof include/linux/slab.h:1014 [inline]
 binder_request_freeze_notification drivers/android/binder.c:3855 [inline]
 binder_thread_write drivers/android/binder.c:4485 [inline]
 binder_ioctl_write_read+0xe7f/0xb560 drivers/android/binder.c:5387
 binder_ioctl+0x436/0x1cc0 drivers/android/binder.c:5718
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 46:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:230 [inline]
 slab_free_hook mm/slub.c:2343 [inline]
 slab_free mm/slub.c:4580 [inline]
 kfree+0x1a0/0x440 mm/slub.c:4728
 binder_free_ref drivers/android/binder.c:1355 [inline]
 binder_deferred_release drivers/android/binder.c:6256 [inline]
 binder_deferred_func+0x11df/0x1460 drivers/android/binder.c:6296
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

The buggy address belongs to the object at ffff888052f67900
 which belongs to the cache kmalloc-64 of size 64
The buggy address is located 8 bytes inside of
 freed 64-byte region [ffff888052f67900, ffff888052f67940)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x52f67
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000000 ffff88801ac418c0 ffffea00019fef00 dead000000000002
raw: 0000000000000000 0000000080200020 00000001f5000000 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 0x52c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5439, tgid 5439 (udevd), ts 447260300593, free_ts 447255689750
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1537
 prep_new_page mm/page_alloc.c:1545 [inline]
 get_page_from_freelist+0x3045/0x3190 mm/page_alloc.c:3457
 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4733
 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265
 alloc_slab_page+0x6a/0x120 mm/slub.c:2413
 allocate_slab+0x5a/0x2f0 mm/slub.c:2579
 new_slab mm/slub.c:2632 [inline]
 ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3819
 __slab_alloc+0x58/0xa0 mm/slub.c:3909
 __slab_alloc_node mm/slub.c:3962 [inline]
 slab_alloc_node mm/slub.c:4123 [inline]
 __do_kmalloc_node mm/slub.c:4264 [inline]
 __kmalloc_noprof+0x25a/0x400 mm/slub.c:4277
 kmalloc_noprof include/linux/slab.h:882 [inline]
 kzalloc_noprof include/linux/slab.h:1014 [inline]
 tomoyo_encode2 security/tomoyo/realpath.c:45 [inline]
 tomoyo_encode+0x26f/0x540 security/tomoyo/realpath.c:80
 tomoyo_realpath_from_path+0x59e/0x5e0 security/tomoyo/realpath.c:283
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_path_number_perm+0x23a/0x880 security/tomoyo/file.c:723
 tomoyo_path_mknod+0x176/0x1b0 security/tomoyo/hooks.h:226
 security_path_mknod+0x181/0x3a0 security/security.c:1893
 may_o_create fs/namei.c:3414 [inline]
 lookup_open fs/namei.c:3558 [inline]
 open_last_lookups fs/namei.c:3694 [inline]
 path_openat+0xe2f/0x3590 fs/namei.c:3930
 do_filp_open+0x235/0x490 fs/namei.c:3960
page last free pid 9584 tgid 9584 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1108 [inline]
 free_unref_page+0xcfb/0xf20 mm/page_alloc.c:2638
 free_pipe_info+0x300/0x390 fs/pipe.c:860
 put_pipe_info fs/pipe.c:719 [inline]
 pipe_release+0x245/0x320 fs/pipe.c:742
 __fput+0x241/0x880 fs/file_table.c:431
 __do_sys_close fs/open.c:1565 [inline]
 __se_sys_close fs/open.c:1550 [inline]
 __x64_sys_close+0x7f/0x110 fs/open.c:1550
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff888052f67800: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
 ffff888052f67880: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff888052f67900: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
                      ^
 ffff888052f67980: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff888052f67a00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
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