==================================================================
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 ffff888028c35688 by task kworker/1:1/46

CPU: 1 UID: 0 PID: 46 Comm: kworker/1:1 Not tainted 6.12.0-rc2-next-20241011-syzkaller #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+0xa63/0x1850 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

Allocated by task 12590:
 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:260 [inline]
 __kmalloc_cache_noprof+0x243/0x390 mm/slub.c:4304
 kmalloc_noprof include/linux/slab.h:879 [inline]
 kzalloc_noprof include/linux/slab.h:1015 [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+0xf9/0x170 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:582
 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:233 [inline]
 slab_free_hook mm/slub.c:2329 [inline]
 slab_free mm/slub.c:4588 [inline]
 kfree+0x1a0/0x460 mm/slub.c:4736
 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+0xa63/0x1850 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/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 ffff888028c35680
 which belongs to the cache kmalloc-64 of size 64
The buggy address is located 8 bytes inside of
 freed 64-byte region [ffff888028c35680, ffff888028c356c0)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x28c35
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000000 ffff88801ac418c0 ffffea00017e71c0 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 5485, tgid 5485 (udevadm), ts 80947605622, free_ts 80931838493
 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+0x3129/0x3270 mm/page_alloc.c:3493
 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4769
 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265
 alloc_slab_page+0x6a/0x120 mm/slub.c:2399
 allocate_slab+0x5a/0x2f0 mm/slub.c:2565
 new_slab mm/slub.c:2618 [inline]
 ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3805
 __slab_alloc+0x58/0xa0 mm/slub.c:3895
 __slab_alloc_node mm/slub.c:3970 [inline]
 slab_alloc_node mm/slub.c:4131 [inline]
 __do_kmalloc_node mm/slub.c:4272 [inline]
 __kmalloc_noprof+0x2e6/0x4c0 mm/slub.c:4285
 kmalloc_noprof include/linux/slab.h:883 [inline]
 kzalloc_noprof include/linux/slab.h:1015 [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_perm+0x2b7/0x740 security/tomoyo/file.c:822
 security_inode_getattr+0x130/0x330 security/security.c:2373
 vfs_getattr+0x45/0x430 fs/stat.c:246
 vfs_fstat fs/stat.c:271 [inline]
 vfs_fstatat+0xe4/0x190 fs/stat.c:380
 __do_sys_newfstatat fs/stat.c:547 [inline]
 __se_sys_newfstatat fs/stat.c:541 [inline]
 __x64_sys_newfstatat+0x11d/0x1a0 fs/stat.c:541
page last free pid 5485 tgid 5485 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:2674
 discard_slab mm/slub.c:2664 [inline]
 __put_partials+0xeb/0x130 mm/slub.c:3132
 put_cpu_partial+0x17c/0x250 mm/slub.c:3207
 __slab_free+0x2ea/0x3d0 mm/slub.c:4458
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4094 [inline]
 slab_alloc_node mm/slub.c:4143 [inline]
 __kmalloc_cache_noprof+0x1d9/0x390 mm/slub.c:4299
 kmalloc_noprof include/linux/slab.h:879 [inline]
 kzalloc_noprof include/linux/slab.h:1015 [inline]
 kernfs_fop_open+0x3e0/0xd10 fs/kernfs/file.c:623
 do_dentry_open+0x978/0x1460 fs/open.c:958
 vfs_open+0x3e/0x330 fs/open.c:1088
 do_open fs/namei.c:3774 [inline]
 path_openat+0x2c84/0x3590 fs/namei.c:3933
 do_filp_open+0x235/0x490 fs/namei.c:3960
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1415
 do_sys_open fs/open.c:1430 [inline]
 __do_sys_openat fs/open.c:1446 [inline]
 __se_sys_openat fs/open.c:1441 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1441
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83

Memory state around the buggy address:
 ffff888028c35580: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff888028c35600: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff888028c35680: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
                      ^
 ffff888028c35700: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff888028c35780: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
==================================================================