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 ffff888077d8e008 by task syz-executor/5889

CPU: 1 UID: 0 PID: 5889 Comm: syz-executor Not tainted 6.13.0-next-20250124-syzkaller-10205-g5ffa57f6eece #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: 0033:0x7f7c927874ca
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:00007ffd05cd2ca8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f7c92801ecb RCX: 00007f7c927874ca
RDX: 00007f7c9280ec27 RSI: 00007f7c92801ecb RDI: 00007f7c9280ec27
RBP: 00007f7c928020c3 R08: 0000000000000000 R09: 00000000000001ff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7c927e41c8
R13: 00007f7c927e41a8 R14: 0000000000000009 R15: 0000000000000000
 </TASK>

Allocated by task 5870:
 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 5870:
 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 ffff888077d8e000
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
 freed 512-byte region [ffff888077d8e000, ffff888077d8e200)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x77d8c
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801ac41c80 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801ac41c80 dead000000000122 0000000000000000
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000002 ffffea0001df6301 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 5870, tgid 5870 (syz-executor), ts 70736062500, free_ts 70722837904
 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]
 shmem_fill_super+0xcf/0x1110 mm/shmem.c:4986
 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
page last free pid 5865 tgid 5865 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
 stack_depot_save_flags+0x7c6/0x940 lib/stackdepot.c:674
 kasan_save_stack mm/kasan/common.c:48 [inline]
 kasan_save_track+0x51/0x80 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]
 __do_kmalloc_node mm/slub.c:4294 [inline]
 __kmalloc_node_noprof+0x290/0x4d0 mm/slub.c:4300
 kmalloc_array_node_noprof include/linux/slab.h:1018 [inline]
 alloc_slab_obj_exts mm/slub.c:1964 [inline]
 account_slab mm/slub.c:2550 [inline]
 allocate_slab+0x179/0x3a0 mm/slub.c:2605
 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]
 kmem_cache_alloc_lru_noprof+0x26c/0x390 mm/slub.c:4183
 __d_alloc+0x31/0x670 fs/dcache.c:1658
 d_alloc fs/dcache.c:1737 [inline]
 d_alloc_parallel+0xdf/0x1630 fs/dcache.c:2501
 __lookup_slow+0x117/0x400 fs/namei.c:1778
 lookup_one_len+0x1ef/0x300 fs/namei.c:2907
 binderfs_create_dentry drivers/android/binderfs.c:489 [inline]
 binderfs_create_dir+0x62/0x360 drivers/android/binderfs.c:560
 init_binder_features drivers/android/binderfs.c:599 [inline]
 binderfs_fill_super+0xa2e/0xd90 drivers/android/binderfs.c:737
 vfs_get_super fs/super.c:1280 [inline]
 get_tree_nodev+0xb7/0x140 fs/super.c:1299

Memory state around the buggy address:
 ffff888077d8df00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888077d8df80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888077d8e000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff888077d8e080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888077d8e100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================


Warning: Permanently added '10.128.1.68' (ED25519) to the list of known hosts.
2025/01/27 21:59:05 ignoring optional flag "sandboxArg"="0"
2025/01/27 21:59:05 parsed 1 programs
[   65.725112][ T5833] cgroup: Unknown subsys name 'net'
[   65.874759][ T5833] cgroup: Unknown subsys name 'cpuset'
[   65.883190][ T5833] cgroup: Unknown subsys name 'rlimit'
[   67.179616][ T5833] Adding 124996k swap on ./swap-file.  Priority:0 extents:1 across:124996k 
[   69.950770][ T5848] 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.
[   71.134394][ T5149] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[   71.143146][ T5149] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[   71.151247][ T5149] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[   71.159244][ T5149] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[   71.167578][ T5149] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3
[   71.175012][ T5149] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[   71.314872][ T5889] ==================================================================
[   71.323268][ T5889] BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0
[   71.331067][ T5889] Write of size 8 at addr ffff888077d8e008 by task syz-executor/5889
[   71.339168][ T5889] 
[   71.341604][ T5889] CPU: 1 UID: 0 PID: 5889 Comm: syz-executor Not tainted 6.13.0-next-20250124-syzkaller-10205-g5ffa57f6eece #0
[   71.341627][ T5889] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[   71.341641][ T5889] Call Trace:
[   71.341648][ T5889]  <TASK>
[   71.341655][ T5889]  dump_stack_lvl+0x241/0x360
[   71.341678][ T5889]  ? __pfx_dump_stack_lvl+0x10/0x10
[   71.341695][ T5889]  ? __pfx__printk+0x10/0x10
[   71.341710][ T5889]  ? _printk+0xd5/0x120
[   71.341724][ T5889]  ? __virt_addr_valid+0x183/0x530
[   71.341746][ T5889]  ? __virt_addr_valid+0x183/0x530
[   71.341767][ T5889]  print_report+0x169/0x550
[   71.341789][ T5889]  ? __virt_addr_valid+0x183/0x530
[   71.341809][ T5889]  ? __virt_addr_valid+0x183/0x530
[   71.341828][ T5889]  ? __virt_addr_valid+0x45f/0x530
[   71.341848][ T5889]  ? __phys_addr+0xba/0x170
[   71.341869][ T5889]  ? binder_add_device+0x5f/0xa0
[   71.341891][ T5889]  kasan_report+0x143/0x180
[   71.341913][ T5889]  ? binder_add_device+0x5f/0xa0
[   71.341936][ T5889]  binder_add_device+0x5f/0xa0
[   71.341957][ T5889]  binderfs_binder_device_create+0x7bf/0x9c0
[   71.341981][ T5889]  binderfs_fill_super+0x944/0xd90
[   71.342005][ T5889]  ? __pfx_binderfs_fill_super+0x10/0x10
[   71.342033][ T5889]  ? shrinker_register+0x160/0x230
[   71.342061][ T5889]  ? sget_fc+0x909/0x9c0
[   71.342081][ T5889]  ? __pfx_set_anon_super_fc+0x10/0x10
[   71.342100][ T5889]  ? __pfx_binderfs_fill_super+0x10/0x10
[   71.342120][ T5889]  get_tree_nodev+0xb7/0x140
[   71.342140][ T5889]  vfs_get_tree+0x90/0x2b0
[   71.342161][ T5889]  do_new_mount+0x2be/0xb40
[   71.342179][ T5889]  ? __pfx_do_new_mount+0x10/0x10
[   71.342198][ T5889]  __se_sys_mount+0x2d6/0x3c0
[   71.342214][ T5889]  ? lockdep_hardirqs_on_prepare+0x43d/0x780
[   71.342236][ T5889]  ? __pfx___se_sys_mount+0x10/0x10
[   71.342252][ T5889]  ? do_syscall_64+0x100/0x230
[   71.342271][ T5889]  ? __x64_sys_mount+0x20/0xc0
[   71.342287][ T5889]  do_syscall_64+0xf3/0x230
[   71.342303][ T5889]  ? clear_bhb_loop+0x35/0x90
[   71.342331][ T5889]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   71.342360][ T5889] RIP: 0033:0x7f7c927874ca
[   71.342384][ T5889] 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
[   71.342396][ T5889] RSP: 002b:00007ffd05cd2ca8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[   71.342415][ T5889] RAX: ffffffffffffffda RBX: 00007f7c92801ecb RCX: 00007f7c927874ca
[   71.342427][ T5889] RDX: 00007f7c9280ec27 RSI: 00007f7c92801ecb RDI: 00007f7c9280ec27
[   71.342438][ T5889] RBP: 00007f7c928020c3 R08: 0000000000000000 R09: 00000000000001ff
[   71.342448][ T5889] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7c927e41c8
[   71.342459][ T5889] R13: 00007f7c927e41a8 R14: 0000000000000009 R15: 0000000000000000
[   71.342475][ T5889]  </TASK>
[   71.342481][ T5889] 
[   71.618708][ T5889] Allocated by task 5870:
[   71.623035][ T5889]  kasan_save_track+0x3f/0x80
[   71.627755][ T5889]  __kasan_kmalloc+0x98/0xb0
[   71.632666][ T5889]  __kmalloc_cache_noprof+0x243/0x390
[   71.638036][ T5889]  binderfs_binder_device_create+0x16c/0x9c0
[   71.644018][ T5889]  binderfs_fill_super+0x944/0xd90
[   71.649213][ T5889]  get_tree_nodev+0xb7/0x140
[   71.653809][ T5889]  vfs_get_tree+0x90/0x2b0
[   71.658212][ T5889]  do_new_mount+0x2be/0xb40
[   71.662724][ T5889]  __se_sys_mount+0x2d6/0x3c0
[   71.667493][ T5889]  do_syscall_64+0xf3/0x230
[   71.671995][ T5889]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   71.677881][ T5889] 
[   71.680200][ T5889] Freed by task 5870:
[   71.684254][ T5889]  kasan_save_track+0x3f/0x80
[   71.688992][ T5889]  kasan_save_free_info+0x40/0x50
[   71.694006][ T5889]  __kasan_slab_free+0x59/0x70
[   71.698784][ T5889]  kfree+0x196/0x430
[   71.702671][ T5889]  evict+0x4e8/0x9a0
[   71.706559][ T5889]  __dentry_kill+0x20d/0x630
[   71.711149][ T5889]  shrink_kill+0xa9/0x2c0
[   71.715617][ T5889]  shrink_dentry_list+0x2c0/0x5b0
[   71.720646][ T5889]  shrink_dcache_parent+0xcb/0x3b0
[   71.725870][ T5889]  do_one_tree+0x23/0xe0
[   71.730193][ T5889]  shrink_dcache_for_umount+0xb4/0x180
[   71.735819][ T5889]  generic_shutdown_super+0x6a/0x2d0
[   71.741130][ T5889]  kill_litter_super+0x76/0xb0
[   71.745906][ T5889]  binderfs_kill_super+0x44/0x90
[   71.750848][ T5889]  deactivate_locked_super+0xc4/0x130
[   71.756362][ T5889]  cleanup_mnt+0x41f/0x4b0
[   71.760806][ T5889]  task_work_run+0x24f/0x310
[   71.765399][ T5889]  do_exit+0xa2a/0x28e0
[   71.769568][ T5889]  do_group_exit+0x207/0x2c0
[   71.774151][ T5889]  get_signal+0x16b2/0x1750
[   71.778644][ T5889]  arch_do_signal_or_restart+0x96/0x860
[   71.784191][ T5889]  syscall_exit_to_user_mode+0xce/0x340
[   71.789905][ T5889]  do_syscall_64+0x100/0x230
[   71.794490][ T5889]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   71.800482][ T5889] 
[   71.802798][ T5889] The buggy address belongs to the object at ffff888077d8e000
[   71.802798][ T5889]  which belongs to the cache kmalloc-512 of size 512
[   71.816946][ T5889] The buggy address is located 8 bytes inside of
[   71.816946][ T5889]  freed 512-byte region [ffff888077d8e000, ffff888077d8e200)
[   71.831521][ T5889] 
[   71.833979][ T5889] The buggy address belongs to the physical page:
[   71.840390][ T5889] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x77d8c
[   71.849353][ T5889] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   71.857857][ T5889] flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
[   71.865407][ T5889] page_type: f5(slab)
[   71.869586][ T5889] raw: 00fff00000000040 ffff88801ac41c80 dead000000000122 0000000000000000
[   71.878272][ T5889] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[   71.887035][ T5889] head: 00fff00000000040 ffff88801ac41c80 dead000000000122 0000000000000000
[   71.895782][ T5889] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[   71.904476][ T5889] head: 00fff00000000002 ffffea0001df6301 ffffffffffffffff 0000000000000000
[   71.913149][ T5889] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[   71.921806][ T5889] page dumped because: kasan: bad access detected
[   71.928224][ T5889] page_owner tracks the page as allocated
[   71.933928][ T5889] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5870, tgid 5870 (syz-executor), ts 70736062500, free_ts 70722837904
[   71.955557][ T5889]  post_alloc_hook+0x1f4/0x240
[   71.960357][ T5889]  get_page_from_freelist+0x365c/0x37a0
[   71.965994][ T5889]  __alloc_frozen_pages_noprof+0x292/0x710
[   71.971802][ T5889]  alloc_pages_mpol+0x311/0x660
[   71.976642][ T5889]  allocate_slab+0x8f/0x3a0
[   71.981314][ T5889]  ___slab_alloc+0xc27/0x14a0
[   71.986012][ T5889]  __slab_alloc+0x58/0xa0
[   71.990450][ T5889]  __kmalloc_cache_noprof+0x27b/0x390
[   71.995825][ T5889]  shmem_fill_super+0xcf/0x1110
[   72.000678][ T5889]  get_tree_nodev+0xb7/0x140
[   72.005280][ T5889]  vfs_get_tree+0x90/0x2b0
[   72.009687][ T5889]  do_new_mount+0x2be/0xb40
[   72.014180][ T5889]  __se_sys_mount+0x2d6/0x3c0
[   72.018870][ T5889]  do_syscall_64+0xf3/0x230
[   72.023369][ T5889]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   72.029262][ T5889] page last free pid 5865 tgid 5865 stack trace:
[   72.035572][ T5889]  free_frozen_pages+0xe0d/0x10e0
[   72.040767][ T5889]  stack_depot_save_flags+0x7c6/0x940
[   72.046134][ T5889]  kasan_save_track+0x51/0x80
[   72.050897][ T5889]  __kasan_kmalloc+0x98/0xb0
[   72.055523][ T5889]  __kmalloc_node_noprof+0x290/0x4d0
[   72.060911][ T5889]  allocate_slab+0x179/0x3a0
[   72.065488][ T5889]  ___slab_alloc+0xc27/0x14a0
[   72.070151][ T5889]  __slab_alloc+0x58/0xa0
[   72.074469][ T5889]  kmem_cache_alloc_lru_noprof+0x26c/0x390
[   72.080276][ T5889]  __d_alloc+0x31/0x670
[   72.084946][ T5889]  d_alloc_parallel+0xdf/0x1630
[   72.089918][ T5889]  __lookup_slow+0x117/0x400
[   72.094521][ T5889]  lookup_one_len+0x1ef/0x300
[   72.099261][ T5889]  binderfs_create_dir+0x62/0x360
[   72.104291][ T5889]  binderfs_fill_super+0xa2e/0xd90
[   72.109418][ T5889]  get_tree_nodev+0xb7/0x140
[   72.114090][ T5889] 
[   72.116408][ T5889] Memory state around the buggy address:
[   72.122384][ T5889]  ffff888077d8df00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   72.130518][ T5889]  ffff888077d8df80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   72.138658][ T5889] >ffff888077d8e000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   72.146735][ T5889]                       ^
[   72.151064][ T5889]  ffff888077d8e080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   72.159301][ T5889]  ffff888077d8e100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   72.167347][ T5889] ==================================================================
[   72.205704][ T1296] ieee802154 phy0 wpan0: encryption failed: -22
[   72.212348][ T1296] ieee802154 phy1 wpan1: encryption failed: -22
[   72.230697][ T5893] chnl_net:caif_netlink_parms(): no params data found
[   72.312402][ T5889] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[   72.319757][ T5889] CPU: 0 UID: 0 PID: 5889 Comm: syz-executor Not tainted 6.13.0-next-20250124-syzkaller-10205-g5ffa57f6eece #0
[   72.331662][ T5889] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[   72.341740][ T5889] Call Trace:
[   72.345075][ T5889]  <TASK>
[   72.348111][ T5889]  dump_stack_lvl+0x241/0x360
[   72.352822][ T5889]  ? __pfx_dump_stack_lvl+0x10/0x10
[   72.358058][ T5889]  ? __pfx__printk+0x10/0x10
[   72.362691][ T5889]  ? preempt_schedule+0xe1/0xf0
[   72.367586][ T5889]  ? vscnprintf+0x5d/0x90
[   72.371994][ T5889]  panic+0x349/0x880
[   72.375967][ T5889]  ? check_panic_on_warn+0x21/0xb0
[   72.381194][ T5889]  ? __pfx_panic+0x10/0x10
[   72.385772][ T5889]  ? _raw_spin_unlock_irqrestore+0x130/0x140
[   72.391873][ T5889]  ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[   72.398319][ T5889]  ? print_report+0x502/0x550
[   72.403111][ T5889]  check_panic_on_warn+0x86/0xb0
[   72.408063][ T5889]  ? binder_add_device+0x5f/0xa0
[   72.413023][ T5889]  end_report+0x77/0x160
[   72.417281][ T5889]  kasan_report+0x154/0x180
[   72.421783][ T5889]  ? binder_add_device+0x5f/0xa0
[   72.426806][ T5889]  binder_add_device+0x5f/0xa0
[   72.431564][ T5889]  binderfs_binder_device_create+0x7bf/0x9c0
[   72.437629][ T5889]  binderfs_fill_super+0x944/0xd90
[   72.442743][ T5889]  ? __pfx_binderfs_fill_super+0x10/0x10
[   72.448642][ T5889]  ? shrinker_register+0x160/0x230
[   72.453753][ T5889]  ? sget_fc+0x909/0x9c0
[   72.458166][ T5889]  ? __pfx_set_anon_super_fc+0x10/0x10
[   72.463629][ T5889]  ? __pfx_binderfs_fill_super+0x10/0x10
[   72.469375][ T5889]  get_tree_nodev+0xb7/0x140
[   72.474046][ T5889]  vfs_get_tree+0x90/0x2b0
[   72.478541][ T5889]  do_new_mount+0x2be/0xb40
[   72.483040][ T5889]  ? __pfx_do_new_mount+0x10/0x10
[   72.488091][ T5889]  __se_sys_mount+0x2d6/0x3c0
[   72.492780][ T5889]  ? lockdep_hardirqs_on_prepare+0x43d/0x780
[   72.498973][ T5889]  ? __pfx___se_sys_mount+0x10/0x10
[   72.504168][ T5889]  ? do_syscall_64+0x100/0x230
[   72.508995][ T5889]  ? __x64_sys_mount+0x20/0xc0
[   72.513771][ T5889]  do_syscall_64+0xf3/0x230
[   72.518387][ T5889]  ? clear_bhb_loop+0x35/0x90
[   72.523060][ T5889]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   72.528963][ T5889] RIP: 0033:0x7f7c927874ca
[   72.533370][ T5889] 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
[   72.553164][ T5889] RSP: 002b:00007ffd05cd2ca8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[   72.561575][ T5889] RAX: ffffffffffffffda RBX: 00007f7c92801ecb RCX: 00007f7c927874ca
[   72.569561][ T5889] RDX: 00007f7c9280ec27 RSI: 00007f7c92801ecb RDI: 00007f7c9280ec27
[   72.577651][ T5889] RBP: 00007f7c928020c3 R08: 0000000000000000 R09: 00000000000001ff
[   72.585647][ T5889] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7c927e41c8
[   72.593625][ T5889] R13: 00007f7c927e41a8 R14: 0000000000000009 R15: 0000000000000000
[   72.601611][ T5889]  </TASK>
[   72.605048][ T5889] Kernel Offset: disabled
[   72.609402][ T5889] 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-build3040330008=/tmp/go-build -gno-record-gcc-switches'

git status (err=<nil>)
HEAD detached at f3558dbf03
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=f3558dbf032eab2b77c1cb11b9ce2baffe7838d3 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20250103-110009'" "-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=\"f3558dbf032eab2b77c1cb11b9ce2baffe7838d3\"
/usr/bin/ld: /tmp/cctEALGB.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