KASAN: slab-use-after-free Write in binder_add_device

==================================================================
BUG: KASAN: slab-use-after-free in hlist_add_head include/linux/list.h:1026 [inline]
BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0 drivers/android/binder.c:6932
Write of size 8 at addr ffff888027b71008 by task syz-executor/5851

CPU: 1 UID: 0 PID: 5851 Comm: syz-executor Not tainted 6.13.0-next-20250121-syzkaller-gf066b5a6c7a0-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
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:378 [inline]
 print_report+0x169/0x550 mm/kasan/report.c:489
 kasan_report+0x143/0x180 mm/kasan/report.c:602
 hlist_add_head include/linux/list.h:1026 [inline]
 binder_add_device+0x5f/0xa0 drivers/android/binder.c:6932
 binderfs_binder_device_create+0x7bf/0x9c0 drivers/android/binderfs.c:210
 binderfs_fill_super+0x944/0xd90 drivers/android/binderfs.c:729
 vfs_get_super fs/super.c:1280 [inline]
 get_tree_nodev+0xb7/0x140 fs/super.c:1299
 vfs_get_tree+0x90/0x2b0 fs/super.c:1814
 do_new_mount+0x2be/0xb40 fs/namespace.c:3560
 do_mount fs/namespace.c:3900 [inline]
 __do_sys_mount fs/namespace.c:4111 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4088
 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
RIP: 0033:0x7f01adb81fea
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc71b2a768 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f01adbf3d49 RCX: 00007f01adb81fea
RDX: 00007f01adbff310 RSI: 00007f01adbf3d49 RDI: 00007f01adbff310
RBP: 00007f01adbf3f58 R08: 0000000000000000 R09: 00000000000001ff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f01adbde068
R13: 00007f01adbde048 R14: 0000000000000009 R15: 0000000000000000
 </TASK>

Allocated by task 5845:
 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:4325
 kmalloc_noprof include/linux/slab.h:901 [inline]
 kzalloc_noprof include/linux/slab.h:1037 [inline]
 binderfs_binder_device_create+0x16c/0x9c0 drivers/android/binderfs.c:147
 binderfs_fill_super+0x944/0xd90 drivers/android/binderfs.c:729
 vfs_get_super fs/super.c:1280 [inline]
 get_tree_nodev+0xb7/0x140 fs/super.c:1299
 vfs_get_tree+0x90/0x2b0 fs/super.c:1814
 do_new_mount+0x2be/0xb40 fs/namespace.c:3560
 do_mount fs/namespace.c:3900 [inline]
 __do_sys_mount fs/namespace.c:4111 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4088
 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 5845:
 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:576
 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:2353 [inline]
 slab_free mm/slub.c:4609 [inline]
 kfree+0x196/0x430 mm/slub.c:4757
 evict+0x4e8/0x9a0 fs/inode.c:796
 __dentry_kill+0x20d/0x630 fs/dcache.c:637
 shrink_kill+0xa9/0x2c0 fs/dcache.c:1082
 shrink_dentry_list+0x2c0/0x5b0 fs/dcache.c:1109
 shrink_dcache_parent+0xcb/0x3b0
 do_one_tree+0x23/0xe0 fs/dcache.c:1572
 shrink_dcache_for_umount+0xb4/0x180 fs/dcache.c:1589
 generic_shutdown_super+0x6a/0x2d0 fs/super.c:620
 kill_anon_super fs/super.c:1237 [inline]
 kill_litter_super+0x76/0xb0 fs/super.c:1247
 binderfs_kill_super+0x44/0x90 drivers/android/binderfs.c:791
 deactivate_locked_super+0xc4/0x130 fs/super.c:473
 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1413
 task_work_run+0x24f/0x310 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0xa2a/0x28e0 kernel/exit.c:938
 do_group_exit+0x207/0x2c0 kernel/exit.c:1087
 get_signal+0x16b2/0x1750 kernel/signal.c:3036
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xce/0x340 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888027b71000
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
 freed 512-byte region [ffff888027b71000, ffff888027b71200)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x27b70
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
anon flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801ac41c80 0000000000000000 dead000000000001
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801ac41c80 0000000000000000 dead000000000001
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000002 ffffea00009edc01 ffffffffffffffff 0000000000000000
head: 0000000000000004 0000000000000000 00000000ffffffff 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 5212, tgid 5212 (udevd), ts 21274693892, free_ts 21268188163
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551
 prep_new_page mm/page_alloc.c:1559 [inline]
 get_page_from_freelist+0x365c/0x37a0 mm/page_alloc.c:3477
 __alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4739
 alloc_pages_mpol+0x311/0x660 mm/mempolicy.c:2270
 alloc_slab_page mm/slub.c:2423 [inline]
 allocate_slab+0x8f/0x3a0 mm/slub.c:2587
 new_slab mm/slub.c:2640 [inline]
 ___slab_alloc+0xc27/0x14a0 mm/slub.c:3826
 __slab_alloc+0x58/0xa0 mm/slub.c:3916
 __slab_alloc_node mm/slub.c:3991 [inline]
 slab_alloc_node mm/slub.c:4152 [inline]
 __kmalloc_cache_noprof+0x27b/0x390 mm/slub.c:4320
 kmalloc_noprof include/linux/slab.h:901 [inline]
 kzalloc_noprof include/linux/slab.h:1037 [inline]
 kernfs_fop_open+0x3e0/0xd10 fs/kernfs/file.c:623
 do_dentry_open+0xdec/0x1960 fs/open.c:955
 vfs_open+0x3b/0x370 fs/open.c:1085
 do_open fs/namei.c:3830 [inline]
 path_openat+0x2c81/0x3590 fs/namei.c:3989
 do_filp_open+0x27f/0x4e0 fs/namei.c:4016
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1427
 do_sys_open fs/open.c:1442 [inline]
 __do_sys_openat fs/open.c:1458 [inline]
 __se_sys_openat fs/open.c:1453 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1453
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
page last free pid 5217 tgid 5217 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1127 [inline]
 free_frozen_pages+0xe0d/0x10e0 mm/page_alloc.c:2660
 __slab_free+0x2c2/0x380 mm/slub.c:4520
 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:4115 [inline]
 slab_alloc_node mm/slub.c:4164 [inline]
 __do_kmalloc_node mm/slub.c:4293 [inline]
 __kmalloc_noprof+0x236/0x4c0 mm/slub.c:4306
 kmalloc_noprof include/linux/slab.h:905 [inline]
 tomoyo_realpath_from_path+0xcf/0x5e0 security/tomoyo/realpath.c:251
 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:2377
 vfs_getattr+0x2a/0x3a0 fs/stat.c:243
 vfs_fstat fs/stat.c:265 [inline]
 vfs_fstatat+0xa8/0x130 fs/stat.c:364
 __do_sys_newfstatat fs/stat.c:530 [inline]
 __se_sys_newfstatat fs/stat.c:524 [inline]
 __x64_sys_newfstatat+0x117/0x190 fs/stat.c:524
 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:
 ffff888027b70f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888027b70f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888027b71000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff888027b71080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888027b71100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================


Warning: Permanently added '10.128.0.212' (ED25519) to the list of known hosts.
2025/01/21 10:52:36 ignoring optional flag "sandboxArg"="0"
2025/01/21 10:52:37 parsed 1 programs
[   62.819705][ T5835] cgroup: Unknown subsys name 'net'
[   62.951888][ T5835] cgroup: Unknown subsys name 'cpuset'
[   62.959495][ T5835] cgroup: Unknown subsys name 'rlimit'
[   64.225147][ T5835] Adding 124996k swap on ./swap-file.  Priority:0 extents:1 across:124996k 
[   66.836929][ T5845] soft_limit_in_bytes is deprecated and will be removed. Please report your usecase to linux-mm@kvack.org if you depend on this functionality.
[   67.060649][ T5851] ==================================================================
[   67.060683][ T5851] BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0
[   67.060742][ T5851] Write of size 8 at addr ffff888027b71008 by task syz-executor/5851
[   67.060766][ T5851] 
[   67.060798][ T5851] CPU: 1 UID: 0 PID: 5851 Comm: syz-executor Not tainted 6.13.0-next-20250121-syzkaller-gf066b5a6c7a0-dirty #0
[   67.060817][ T5851] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[   67.060834][ T5851] Call Trace:
[   67.060840][ T5851]  <TASK>
[   67.060847][ T5851]  dump_stack_lvl+0x241/0x360
[   67.060867][ T5851]  ? __pfx_dump_stack_lvl+0x10/0x10
[   67.060883][ T5851]  ? __pfx__printk+0x10/0x10
[   67.060899][ T5851]  ? _printk+0xd5/0x120
[   67.060913][ T5851]  ? __virt_addr_valid+0x183/0x530
[   67.060947][ T5851]  ? __virt_addr_valid+0x183/0x530
[   67.060970][ T5851]  print_report+0x169/0x550
[   67.060993][ T5851]  ? __virt_addr_valid+0x183/0x530
[   67.061015][ T5851]  ? __virt_addr_valid+0x183/0x530
[   67.061035][ T5851]  ? __virt_addr_valid+0x45f/0x530
[   67.061057][ T5851]  ? __phys_addr+0xba/0x170
[   67.061078][ T5851]  ? binder_add_device+0x5f/0xa0
[   67.061100][ T5851]  kasan_report+0x143/0x180
[   67.061124][ T5851]  ? binder_add_device+0x5f/0xa0
[   67.061148][ T5851]  binder_add_device+0x5f/0xa0
[   67.061170][ T5851]  binderfs_binder_device_create+0x7bf/0x9c0
[   67.061196][ T5851]  binderfs_fill_super+0x944/0xd90
[   67.061220][ T5851]  ? __pfx_binderfs_fill_super+0x10/0x10
[   67.061250][ T5851]  ? shrinker_register+0x160/0x230
[   67.061271][ T5851]  ? sget_fc+0x909/0x9c0
[   67.061290][ T5851]  ? __pfx_set_anon_super_fc+0x10/0x10
[   67.061310][ T5851]  ? __pfx_binderfs_fill_super+0x10/0x10
[   67.061332][ T5851]  get_tree_nodev+0xb7/0x140
[   67.061352][ T5851]  vfs_get_tree+0x90/0x2b0
[   67.061374][ T5851]  do_new_mount+0x2be/0xb40
[   67.061392][ T5851]  ? __pfx_do_new_mount+0x10/0x10
[   67.061412][ T5851]  __se_sys_mount+0x2d6/0x3c0
[   67.061428][ T5851]  ? lockdep_hardirqs_on_prepare+0x43d/0x780
[   67.061451][ T5851]  ? __pfx___se_sys_mount+0x10/0x10
[   67.061468][ T5851]  ? do_syscall_64+0x100/0x230
[   67.061486][ T5851]  ? __x64_sys_mount+0x20/0xc0
[   67.061503][ T5851]  do_syscall_64+0xf3/0x230
[   67.061519][ T5851]  ? clear_bhb_loop+0x35/0x90
[   67.061542][ T5851]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   67.061567][ T5851] RIP: 0033:0x7f01adb81fea
[   67.061585][ T5851] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
[   67.061598][ T5851] RSP: 002b:00007ffc71b2a768 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[   67.061617][ T5851] RAX: ffffffffffffffda RBX: 00007f01adbf3d49 RCX: 00007f01adb81fea
[   67.061629][ T5851] RDX: 00007f01adbff310 RSI: 00007f01adbf3d49 RDI: 00007f01adbff310
[   67.061641][ T5851] RBP: 00007f01adbf3f58 R08: 0000000000000000 R09: 00000000000001ff
[   67.061652][ T5851] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f01adbde068
[   67.061663][ T5851] R13: 00007f01adbde048 R14: 0000000000000009 R15: 0000000000000000
[   67.061679][ T5851]  </TASK>
[   67.061685][ T5851] 
[   67.062020][ T5851] Allocated by task 5845:
[   67.062039][ T5851]  kasan_save_track+0x3f/0x80
[   67.062069][ T5851]  __kasan_kmalloc+0x98/0xb0
[   67.062098][ T5851]  __kmalloc_cache_noprof+0x243/0x390
[   67.062125][ T5851]  binderfs_binder_device_create+0x16c/0x9c0
[   67.062155][ T5851]  binderfs_fill_super+0x944/0xd90
[   67.062184][ T5851]  get_tree_nodev+0xb7/0x140
[   67.062212][ T5851]  vfs_get_tree+0x90/0x2b0
[   67.062241][ T5851]  do_new_mount+0x2be/0xb40
[   67.062264][ T5851]  __se_sys_mount+0x2d6/0x3c0
[   67.062289][ T5851]  do_syscall_64+0xf3/0x230
[   67.062313][ T5851]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   67.062342][ T5851] 
[   67.062356][ T5851] Freed by task 5845:
[   67.062374][ T5851]  kasan_save_track+0x3f/0x80
[   67.062402][ T5851]  kasan_save_free_info+0x40/0x50
[   67.062429][ T5851]  __kasan_slab_free+0x59/0x70
[   67.062458][ T5851]  kfree+0x196/0x430
[   67.062481][ T5851]  evict+0x4e8/0x9a0
[   67.062509][ T5851]  __dentry_kill+0x20d/0x630
[   67.062534][ T5851]  shrink_kill+0xa9/0x2c0
[   67.062575][ T5851]  shrink_dentry_list+0x2c0/0x5b0
[   67.062601][ T5851]  shrink_dcache_parent+0xcb/0x3b0
[   67.062628][ T5851]  do_one_tree+0x23/0xe0
[   67.062653][ T5851]  shrink_dcache_for_umount+0xb4/0x180
[   67.062680][ T5851]  generic_shutdown_super+0x6a/0x2d0
[   67.062708][ T5851]  kill_litter_super+0x76/0xb0
[   67.062736][ T5851]  binderfs_kill_super+0x44/0x90
[   67.062765][ T5851]  deactivate_locked_super+0xc4/0x130
[   67.062792][ T5851]  cleanup_mnt+0x41f/0x4b0
[   67.062818][ T5851]  task_work_run+0x24f/0x310
[   67.062850][ T5851]  do_exit+0xa2a/0x28e0
[   67.062878][ T5851]  do_group_exit+0x207/0x2c0
[   67.062906][ T5851]  get_signal+0x16b2/0x1750
[   67.062936][ T5851]  arch_do_signal_or_restart+0x96/0x860
[   67.062965][ T5851]  syscall_exit_to_user_mode+0xce/0x340
[   67.062999][ T5851]  do_syscall_64+0x100/0x230
[   67.063023][ T5851]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   67.063052][ T5851] 
[   67.063067][ T5851] The buggy address belongs to the object at ffff888027b71000
[   67.063067][ T5851]  which belongs to the cache kmalloc-512 of size 512
[   67.063091][ T5851] The buggy address is located 8 bytes inside of
[   67.063091][ T5851]  freed 512-byte region [ffff888027b71000, ffff888027b71200)
[   67.063123][ T5851] 
[   67.063150][ T5851] The buggy address belongs to the physical page:
[   67.063168][ T5851] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x27b70
[   67.063209][ T5851] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   67.063233][ T5851] anon flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
[   67.063260][ T5851] page_type: f5(slab)
[   67.063284][ T5851] raw: 00fff00000000040 ffff88801ac41c80 0000000000000000 dead000000000001
[   67.063308][ T5851] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[   67.063333][ T5851] head: 00fff00000000040 ffff88801ac41c80 0000000000000000 dead000000000001
[   67.063356][ T5851] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[   67.063381][ T5851] head: 00fff00000000002 ffffea00009edc01 ffffffffffffffff 0000000000000000
[   67.063404][ T5851] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[   67.063422][ T5851] page dumped because: kasan: bad access detected
[   67.063445][ T5851] page_owner tracks the page as allocated
[   67.063461][ T5851] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5212, tgid 5212 (udevd), ts 21274693892, free_ts 21268188163
[   67.063500][ T5851]  post_alloc_hook+0x1f4/0x240
[   67.063527][ T5851]  get_page_from_freelist+0x365c/0x37a0
[   67.063557][ T5851]  __alloc_frozen_pages_noprof+0x292/0x710
[   67.063588][ T5851]  alloc_pages_mpol+0x311/0x660
[   67.063612][ T5851]  allocate_slab+0x8f/0x3a0
[   67.063641][ T5851]  ___slab_alloc+0xc27/0x14a0
[   67.063667][ T5851]  __slab_alloc+0x58/0xa0
[   67.063693][ T5851]  __kmalloc_cache_noprof+0x27b/0x390
[   67.063719][ T5851]  kernfs_fop_open+0x3e0/0xd10
[   67.063746][ T5851]  do_dentry_open+0xdec/0x1960
[   67.063771][ T5851]  vfs_open+0x3b/0x370
[   67.063794][ T5851]  path_openat+0x2c81/0x3590
[   67.063822][ T5851]  do_filp_open+0x27f/0x4e0
[   67.063850][ T5851]  do_sys_openat2+0x13e/0x1d0
[   67.063874][ T5851]  __x64_sys_openat+0x247/0x2a0
[   67.063899][ T5851]  do_syscall_64+0xf3/0x230
[   67.063924][ T5851] page last free pid 5217 tgid 5217 stack trace:
[   67.063949][ T5851]  free_frozen_pages+0xe0d/0x10e0
[   67.063984][ T5851]  __slab_free+0x2c2/0x380
[   67.064012][ T5851]  qlist_free_all+0x9a/0x140
[   67.064046][ T5851]  kasan_quarantine_reduce+0x14f/0x170
[   67.064075][ T5851]  __kasan_slab_alloc+0x23/0x80
[   67.064105][ T5851]  __kmalloc_noprof+0x236/0x4c0
[   67.064130][ T5851]  tomoyo_realpath_from_path+0xcf/0x5e0
[   67.064156][ T5851]  tomoyo_path_perm+0x2b7/0x740
[   67.064184][ T5851]  security_inode_getattr+0x130/0x330
[   67.064216][ T5851]  vfs_getattr+0x2a/0x3a0
[   67.064240][ T5851]  vfs_fstatat+0xa8/0x130
[   67.064264][ T5851]  __x64_sys_newfstatat+0x117/0x190
[   67.064290][ T5851]  do_syscall_64+0xf3/0x230
[   67.064315][ T5851]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   67.064344][ T5851] 
[   67.064358][ T5851] Memory state around the buggy address:
[   67.064377][ T5851]  ffff888027b70f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   67.064398][ T5851]  ffff888027b70f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   67.064419][ T5851] >ffff888027b71000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   67.064437][ T5851]                       ^
[   67.064455][ T5851]  ffff888027b71080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   67.064476][ T5851]  ffff888027b71100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   67.064494][ T5851] ==================================================================
[   67.072767][ T5851] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[   67.915129][ T5851] CPU: 1 UID: 0 PID: 5851 Comm: syz-executor Not tainted 6.13.0-next-20250121-syzkaller-gf066b5a6c7a0-dirty #0
[   67.927011][ T5851] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[   67.937053][ T5851] Call Trace:
[   67.940325][ T5851]  <TASK>
[   67.943251][ T5851]  dump_stack_lvl+0x241/0x360
[   67.947921][ T5851]  ? __pfx_dump_stack_lvl+0x10/0x10
[   67.953097][ T5851]  ? __pfx__printk+0x10/0x10
[   67.957666][ T5851]  ? preempt_schedule+0xe1/0xf0
[   67.962515][ T5851]  ? vscnprintf+0x5d/0x90
[   67.966842][ T5851]  panic+0x349/0x880
[   67.970713][ T5851]  ? check_panic_on_warn+0x21/0xb0
[   67.975806][ T5851]  ? __pfx_panic+0x10/0x10
[   67.980220][ T5851]  ? _raw_spin_unlock_irqrestore+0x130/0x140
[   67.986187][ T5851]  ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[   67.992494][ T5851]  ? print_report+0x502/0x550
[   67.997153][ T5851]  check_panic_on_warn+0x86/0xb0
[   68.002067][ T5851]  ? binder_add_device+0x5f/0xa0
[   68.006985][ T5851]  end_report+0x77/0x160
[   68.011207][ T5851]  kasan_report+0x154/0x180
[   68.015691][ T5851]  ? binder_add_device+0x5f/0xa0
[   68.020610][ T5851]  binder_add_device+0x5f/0xa0
[   68.025356][ T5851]  binderfs_binder_device_create+0x7bf/0x9c0
[   68.031431][ T5851]  binderfs_fill_super+0x944/0xd90
[   68.036525][ T5851]  ? __pfx_binderfs_fill_super+0x10/0x10
[   68.042142][ T5851]  ? shrinker_register+0x160/0x230
[   68.047239][ T5851]  ? sget_fc+0x909/0x9c0
[   68.051468][ T5851]  ? __pfx_set_anon_super_fc+0x10/0x10
[   68.057076][ T5851]  ? __pfx_binderfs_fill_super+0x10/0x10
[   68.062707][ T5851]  get_tree_nodev+0xb7/0x140
[   68.067278][ T5851]  vfs_get_tree+0x90/0x2b0
[   68.071706][ T5851]  do_new_mount+0x2be/0xb40
[   68.076197][ T5851]  ? __pfx_do_new_mount+0x10/0x10
[   68.081199][ T5851]  __se_sys_mount+0x2d6/0x3c0
[   68.085852][ T5851]  ? lockdep_hardirqs_on_prepare+0x43d/0x780
[   68.091815][ T5851]  ? __pfx___se_sys_mount+0x10/0x10
[   68.096991][ T5851]  ? do_syscall_64+0x100/0x230
[   68.101847][ T5851]  ? __x64_sys_mount+0x20/0xc0
[   68.106617][ T5851]  do_syscall_64+0xf3/0x230
[   68.111155][ T5851]  ? clear_bhb_loop+0x35/0x90
[   68.115827][ T5851]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   68.121708][ T5851] RIP: 0033:0x7f01adb81fea
[   68.126109][ T5851] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
[   68.145693][ T5851] RSP: 002b:00007ffc71b2a768 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[   68.154097][ T5851] RAX: ffffffffffffffda RBX: 00007f01adbf3d49 RCX: 00007f01adb81fea
[   68.162077][ T5851] RDX: 00007f01adbff310 RSI: 00007f01adbf3d49 RDI: 00007f01adbff310
[   68.170030][ T5851] RBP: 00007f01adbf3f58 R08: 0000000000000000 R09: 00000000000001ff
[   68.177979][ T5851] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f01adbde068
[   68.185930][ T5851] R13: 00007f01adbde048 R14: 0000000000000009 R15: 0000000000000000
[   68.193892][ T5851]  </TASK>
[   68.197374][ T5851] Kernel Offset: disabled
[   68.201687][ T5851] Rebooting in 86400 seconds..


syzkaller build log:
go env (err=<nil>)
GO111MODULE='auto'
GOARCH='amd64'
GOBIN=''
GOCACHE='/syzkaller/.cache/go-build'
GOENV='/syzkaller/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFLAGS=''
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMODCACHE='/syzkaller/jobs-2/linux/gopath/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/syzkaller/jobs-2/linux/gopath'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/usr/local/go'
GOSUMDB='sum.golang.org'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.22.7'
GCCGO='gccgo'
GOAMD64='v1'
AR='ar'
CC='gcc'
CXX='g++'
CGO_ENABLED='1'
GOMOD='/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.mod'
GOWORK=''
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
PKG_CONFIG='pkg-config'
GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build2028274320=/tmp/go-build -gno-record-gcc-switches'

git status (err=<nil>)
HEAD detached at 689146651c
nothing to commit, working tree clean


tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sys/syz-sysgen
make .descriptions
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
bin/syz-sysgen
go fmt ./sys/... >/dev/null
touch .descriptions
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=689146651cb695ec7836080377ad32933a0b9bce -X 'github.com/google/syzkaller/prog.gitRevisionDate=20241129-143606'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog
mkdir -p ./bin/linux_amd64
g++ -o ./bin/linux_amd64/syz-executor executor/executor.cc \
	-m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -static-pie -std=c++17 -I. -Iexecutor/_include -fpermissive -w -DGOOS_linux=1 -DGOARCH_amd64=1 \
	-DHOSTGOOS_linux=1 -DGIT_REVISION=\"689146651cb695ec7836080377ad32933a0b9bce\"
/usr/bin/ld: /tmp/ccIVWYJh.o: in function `test_cover_filter()':
executor.cc:(.text+0x14f8b): warning: the use of `tempnam' is dangerous, better use `mkstemp'
/usr/bin/ld: /tmp/ccIVWYJh.o: in function `Connection::Connect(char const*, char const*)':
executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x104): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking