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 ffff88807f38b808 by task syz-executor/5843

CPU: 1 UID: 0 PID: 5843 Comm: syz-executor Not tainted 6.13.0-next-20250130-syzkaller-10607-ga13f6e0f405e #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: 0033:0x7f29e09874ca
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:00007ffff7a47088 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f29e0a01e6b RCX: 00007f29e09874ca
RDX: 00007f29e0a0ebc7 RSI: 00007f29e0a01e6b RDI: 00007f29e0a0ebc7
RBP: 00007f29e0a02063 R08: 0000000000000000 R09: 00007ffff7a47130
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f29e09e41c8
R13: 00007f29e09e41a8 R14: 0000000000000009 R15: 0000000000000000
 </TASK>

Allocated by task 5844:
 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 5844:
 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:643
 shrink_kill+0xa9/0x2c0 fs/dcache.c:1088
 shrink_dentry_list+0x2c0/0x5b0 fs/dcache.c:1115
 shrink_dcache_parent+0xcb/0x3b0
 do_one_tree+0x23/0xe0 fs/dcache.c:1578
 shrink_dcache_for_umount+0xb4/0x180 fs/dcache.c:1595
 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 ffff88807f38b800
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
 freed 512-byte region [ffff88807f38b800, ffff88807f38ba00)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7f388
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 ffffea0001fce201 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 5219, tgid 5219 (udevadm), ts 23142776891, free_ts 23133404447
 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
 discard_slab mm/slub.c:2684 [inline]
 __put_partials+0x160/0x1c0 mm/slub.c:3153
 put_cpu_partial+0x17c/0x250 mm/slub.c:3228
 __slab_free+0x290/0x380 mm/slub.c:4479
 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_check_open_permission+0x258/0x4f0 security/tomoyo/file.c:771
 security_file_open+0xac/0x250 security/security.c:3114
 do_dentry_open+0x320/0x1960 fs/open.c:932
 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

Memory state around the buggy address:
 ffff88807f38b700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88807f38b780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88807f38b800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff88807f38b880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88807f38b900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================


Warning: Permanently added '10.128.1.98' (ED25519) to the list of known hosts.
2025/01/31 02:29:03 ignoring optional flag "sandboxArg"="0"
2025/01/31 02:29:03 parsed 1 programs
[   65.583557][ T5828] cgroup: Unknown subsys name 'net'
[   65.749998][ T5828] cgroup: Unknown subsys name 'cpuset'
[   65.758863][ T5828] cgroup: Unknown subsys name 'rlimit'
[   67.045344][ T5828] Adding 124996k swap on ./swap-file.  Priority:0 extents:1 across:124996k 
[   69.757266][ T5847] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[   69.765996][ T5847] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[   69.774847][ T5847] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[   69.786719][ T5847] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[   69.796746][ T5847] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3
[   69.804201][ T5847] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[   70.049572][ T5842] 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.
[   70.197815][ T1103] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[   70.217628][ T1103] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[   70.504064][ T3433] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[   70.536449][ T3433] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
[   70.606186][ T5843] ==================================================================
[   70.614413][ T5843] BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0
[   70.622197][ T5843] Write of size 8 at addr ffff88807f38b808 by task syz-executor/5843
[   70.630284][ T5843] 
[   70.632641][ T5843] CPU: 1 UID: 0 PID: 5843 Comm: syz-executor Not tainted 6.13.0-next-20250130-syzkaller-10607-ga13f6e0f405e #0
[   70.632660][ T5843] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[   70.632675][ T5843] Call Trace:
[   70.632682][ T5843]  <TASK>
[   70.632689][ T5843]  dump_stack_lvl+0x241/0x360
[   70.632711][ T5843]  ? __pfx_dump_stack_lvl+0x10/0x10
[   70.632726][ T5843]  ? __pfx__printk+0x10/0x10
[   70.632742][ T5843]  ? _printk+0xd5/0x120
[   70.632756][ T5843]  ? __virt_addr_valid+0x183/0x530
[   70.632779][ T5843]  ? __virt_addr_valid+0x183/0x530
[   70.632799][ T5843]  print_report+0x169/0x550
[   70.632821][ T5843]  ? __virt_addr_valid+0x183/0x530
[   70.632838][ T5843]  ? __virt_addr_valid+0x183/0x530
[   70.632856][ T5843]  ? __virt_addr_valid+0x45f/0x530
[   70.632872][ T5843]  ? __phys_addr+0xba/0x170
[   70.632890][ T5843]  ? binder_add_device+0x5f/0xa0
[   70.632911][ T5843]  kasan_report+0x143/0x180
[   70.632926][ T5843]  ? binder_add_device+0x5f/0xa0
[   70.632946][ T5843]  binder_add_device+0x5f/0xa0
[   70.632967][ T5843]  binderfs_binder_device_create+0x7bf/0x9c0
[   70.632989][ T5843]  binderfs_fill_super+0x944/0xd90
[   70.633011][ T5843]  ? __pfx_binderfs_fill_super+0x10/0x10
[   70.633036][ T5843]  ? shrinker_register+0x160/0x230
[   70.633057][ T5843]  ? sget_fc+0x909/0x9c0
[   70.633077][ T5843]  ? __pfx_set_anon_super_fc+0x10/0x10
[   70.633096][ T5843]  ? __pfx_binderfs_fill_super+0x10/0x10
[   70.633116][ T5843]  get_tree_nodev+0xb7/0x140
[   70.633136][ T5843]  vfs_get_tree+0x90/0x2b0
[   70.633156][ T5843]  do_new_mount+0x2be/0xb40
[   70.633174][ T5843]  ? __pfx_do_new_mount+0x10/0x10
[   70.633192][ T5843]  __se_sys_mount+0x2d6/0x3c0
[   70.633206][ T5843]  ? lockdep_hardirqs_on_prepare+0x43d/0x780
[   70.633228][ T5843]  ? __pfx___se_sys_mount+0x10/0x10
[   70.633243][ T5843]  ? do_syscall_64+0x100/0x230
[   70.633263][ T5843]  ? __x64_sys_mount+0x20/0xc0
[   70.633277][ T5843]  do_syscall_64+0xf3/0x230
[   70.633291][ T5843]  ? clear_bhb_loop+0x35/0x90
[   70.633313][ T5843]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   70.633331][ T5843] RIP: 0033:0x7f29e09874ca
[   70.633351][ T5843] 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
[   70.633363][ T5843] RSP: 002b:00007ffff7a47088 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[   70.633379][ T5843] RAX: ffffffffffffffda RBX: 00007f29e0a01e6b RCX: 00007f29e09874ca
[   70.633391][ T5843] RDX: 00007f29e0a0ebc7 RSI: 00007f29e0a01e6b RDI: 00007f29e0a0ebc7
[   70.633400][ T5843] RBP: 00007f29e0a02063 R08: 0000000000000000 R09: 00007ffff7a47130
[   70.633409][ T5843] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f29e09e41c8
[   70.633418][ T5843] R13: 00007f29e09e41a8 R14: 0000000000000009 R15: 0000000000000000
[   70.633432][ T5843]  </TASK>
[   70.633437][ T5843] 
[   70.907397][ T5843] Allocated by task 5844:
[   70.911714][ T5843]  kasan_save_track+0x3f/0x80
[   70.916394][ T5843]  __kasan_kmalloc+0x98/0xb0
[   70.921007][ T5843]  __kmalloc_cache_noprof+0x243/0x390
[   70.926405][ T5843]  binderfs_binder_device_create+0x16c/0x9c0
[   70.932408][ T5843]  binderfs_fill_super+0x944/0xd90
[   70.937588][ T5843]  get_tree_nodev+0xb7/0x140
[   70.942203][ T5843]  vfs_get_tree+0x90/0x2b0
[   70.946628][ T5843]  do_new_mount+0x2be/0xb40
[   70.951134][ T5843]  __se_sys_mount+0x2d6/0x3c0
[   70.955802][ T5843]  do_syscall_64+0xf3/0x230
[   70.960303][ T5843]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   70.966190][ T5843] 
[   70.968509][ T5843] Freed by task 5844:
[   70.972480][ T5843]  kasan_save_track+0x3f/0x80
[   70.977155][ T5843]  kasan_save_free_info+0x40/0x50
[   70.982263][ T5843]  __kasan_slab_free+0x59/0x70
[   70.987162][ T5843]  kfree+0x196/0x430
[   70.991060][ T5843]  evict+0x4e8/0x9a0
[   70.994954][ T5843]  __dentry_kill+0x20d/0x630
[   70.999545][ T5843]  shrink_kill+0xa9/0x2c0
[   71.003878][ T5843]  shrink_dentry_list+0x2c0/0x5b0
[   71.008903][ T5843]  shrink_dcache_parent+0xcb/0x3b0
[   71.014010][ T5843]  do_one_tree+0x23/0xe0
[   71.018245][ T5843]  shrink_dcache_for_umount+0xb4/0x180
[   71.023699][ T5843]  generic_shutdown_super+0x6a/0x2d0
[   71.028975][ T5843]  kill_litter_super+0x76/0xb0
[   71.033734][ T5843]  binderfs_kill_super+0x44/0x90
[   71.038677][ T5843]  deactivate_locked_super+0xc4/0x130
[   71.044035][ T5843]  cleanup_mnt+0x41f/0x4b0
[   71.048441][ T5843]  task_work_run+0x24f/0x310
[   71.053027][ T5843]  do_exit+0xa2a/0x28e0
[   71.057184][ T5843]  do_group_exit+0x207/0x2c0
[   71.061780][ T5843]  get_signal+0x16b2/0x1750
[   71.066362][ T5843]  arch_do_signal_or_restart+0x96/0x860
[   71.071898][ T5843]  syscall_exit_to_user_mode+0xce/0x340
[   71.077434][ T5843]  do_syscall_64+0x100/0x230
[   71.082012][ T5843]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   71.087897][ T5843] 
[   71.090208][ T5843] The buggy address belongs to the object at ffff88807f38b800
[   71.090208][ T5843]  which belongs to the cache kmalloc-512 of size 512
[   71.104245][ T5843] The buggy address is located 8 bytes inside of
[   71.104245][ T5843]  freed 512-byte region [ffff88807f38b800, ffff88807f38ba00)
[   71.117858][ T5843] 
[   71.120170][ T5843] The buggy address belongs to the physical page:
[   71.126573][ T5843] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7f388
[   71.135341][ T5843] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   71.143825][ T5843] anon flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
[   71.151802][ T5843] page_type: f5(slab)
[   71.155776][ T5843] raw: 00fff00000000040 ffff88801ac41c80 0000000000000000 dead000000000001
[   71.164363][ T5843] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[   71.172955][ T5843] head: 00fff00000000040 ffff88801ac41c80 0000000000000000 dead000000000001
[   71.181618][ T5843] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[   71.190304][ T5843] head: 00fff00000000002 ffffea0001fce201 ffffffffffffffff 0000000000000000
[   71.198975][ T5843] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[   71.207640][ T5843] page dumped because: kasan: bad access detected
[   71.214060][ T5843] page_owner tracks the page as allocated
[   71.219861][ T5843] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5219, tgid 5219 (udevadm), ts 23142776891, free_ts 23133404447
[   71.240780][ T5843]  post_alloc_hook+0x1f4/0x240
[   71.245545][ T5843]  get_page_from_freelist+0x365c/0x37a0
[   71.251087][ T5843]  __alloc_frozen_pages_noprof+0x292/0x710
[   71.256885][ T5843]  alloc_pages_mpol+0x311/0x660
[   71.261723][ T5843]  allocate_slab+0x8f/0x3a0
[   71.266216][ T5843]  ___slab_alloc+0xc27/0x14a0
[   71.270881][ T5843]  __slab_alloc+0x58/0xa0
[   71.275207][ T5843]  __kmalloc_cache_noprof+0x27b/0x390
[   71.280565][ T5843]  kernfs_fop_open+0x3e0/0xd10
[   71.285320][ T5843]  do_dentry_open+0xdec/0x1960
[   71.290071][ T5843]  vfs_open+0x3b/0x370
[   71.294126][ T5843]  path_openat+0x2c81/0x3590
[   71.298705][ T5843]  do_filp_open+0x27f/0x4e0
[   71.303546][ T5843]  do_sys_openat2+0x13e/0x1d0
[   71.308212][ T5843]  __x64_sys_openat+0x247/0x2a0
[   71.313141][ T5843]  do_syscall_64+0xf3/0x230
[   71.317638][ T5843] page last free pid 5217 tgid 5217 stack trace:
[   71.323948][ T5843]  free_frozen_pages+0xe0d/0x10e0
[   71.328965][ T5843]  __put_partials+0x160/0x1c0
[   71.333718][ T5843]  put_cpu_partial+0x17c/0x250
[   71.338471][ T5843]  __slab_free+0x290/0x380
[   71.342910][ T5843]  qlist_free_all+0x9a/0x140
[   71.347513][ T5843]  kasan_quarantine_reduce+0x14f/0x170
[   71.352961][ T5843]  __kasan_slab_alloc+0x23/0x80
[   71.357804][ T5843]  __kmalloc_noprof+0x236/0x4c0
[   71.362655][ T5843]  tomoyo_realpath_from_path+0xcf/0x5e0
[   71.368200][ T5843]  tomoyo_check_open_permission+0x258/0x4f0
[   71.374092][ T5843]  security_file_open+0xac/0x250
[   71.379023][ T5843]  do_dentry_open+0x320/0x1960
[   71.383774][ T5843]  vfs_open+0x3b/0x370
[   71.387831][ T5843]  path_openat+0x2c81/0x3590
[   71.392415][ T5843]  do_filp_open+0x27f/0x4e0
[   71.397089][ T5843]  do_sys_openat2+0x13e/0x1d0
[   71.401759][ T5843] 
[   71.404069][ T5843] Memory state around the buggy address:
[   71.409685][ T5843]  ffff88807f38b700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   71.417822][ T5843]  ffff88807f38b780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   71.425867][ T5843] >ffff88807f38b800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   71.434261][ T5843]                       ^
[   71.438574][ T5843]  ffff88807f38b880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   71.446637][ T5843]  ffff88807f38b900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   71.454682][ T5843] ==================================================================
[   71.512058][ T5843] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[   71.519315][ T5843] CPU: 1 UID: 0 PID: 5843 Comm: syz-executor Not tainted 6.13.0-next-20250130-syzkaller-10607-ga13f6e0f405e #0
[   71.531142][ T5843] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[   71.541229][ T5843] Call Trace:
[   71.544524][ T5843]  <TASK>
[   71.547465][ T5843]  dump_stack_lvl+0x241/0x360
[   71.552174][ T5843]  ? __pfx_dump_stack_lvl+0x10/0x10
[   71.557407][ T5843]  ? __pfx__printk+0x10/0x10
[   71.562025][ T5843]  ? preempt_schedule+0xe1/0xf0
[   71.566905][ T5843]  ? vscnprintf+0x5d/0x90
[   71.571255][ T5843]  panic+0x349/0x880
[   71.575167][ T5843]  ? check_panic_on_warn+0x21/0xb0
[   71.580300][ T5843]  ? __pfx_panic+0x10/0x10
[   71.584745][ T5843]  ? _raw_spin_unlock_irqrestore+0x130/0x140
[   71.590762][ T5843]  ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[   71.597213][ T5843]  ? print_report+0x502/0x550
[   71.601926][ T5843]  check_panic_on_warn+0x86/0xb0
[   71.606890][ T5843]  ? binder_add_device+0x5f/0xa0
[   71.611854][ T5843]  end_report+0x77/0x160
[   71.616132][ T5843]  kasan_report+0x154/0x180
[   71.620836][ T5843]  ? binder_add_device+0x5f/0xa0
[   71.625805][ T5843]  binder_add_device+0x5f/0xa0
[   71.630596][ T5843]  binderfs_binder_device_create+0x7bf/0x9c0
[   71.636623][ T5843]  binderfs_fill_super+0x944/0xd90
[   71.641759][ T5843]  ? __pfx_binderfs_fill_super+0x10/0x10
[   71.647422][ T5843]  ? shrinker_register+0x160/0x230
[   71.652557][ T5843]  ? sget_fc+0x909/0x9c0
[   71.656815][ T5843]  ? __pfx_set_anon_super_fc+0x10/0x10
[   71.662388][ T5843]  ? __pfx_binderfs_fill_super+0x10/0x10
[   71.668049][ T5843]  get_tree_nodev+0xb7/0x140
[   71.672682][ T5843]  vfs_get_tree+0x90/0x2b0
[   71.677130][ T5843]  do_new_mount+0x2be/0xb40
[   71.681651][ T5843]  ? __pfx_do_new_mount+0x10/0x10
[   71.686691][ T5843]  __se_sys_mount+0x2d6/0x3c0
[   71.691390][ T5843]  ? lockdep_hardirqs_on_prepare+0x43d/0x780
[   71.697404][ T5843]  ? __pfx___se_sys_mount+0x10/0x10
[   71.702613][ T5843]  ? do_syscall_64+0x100/0x230
[   71.707397][ T5843]  ? __x64_sys_mount+0x20/0xc0
[   71.712167][ T5843]  do_syscall_64+0xf3/0x230
[   71.716668][ T5843]  ? clear_bhb_loop+0x35/0x90
[   71.721360][ T5843]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   71.727290][ T5843] RIP: 0033:0x7f29e09874ca
[   71.731726][ T5843] 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
[   71.751365][ T5843] RSP: 002b:00007ffff7a47088 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[   71.759796][ T5843] RAX: ffffffffffffffda RBX: 00007f29e0a01e6b RCX: 00007f29e09874ca
[   71.767798][ T5843] RDX: 00007f29e0a0ebc7 RSI: 00007f29e0a01e6b RDI: 00007f29e0a0ebc7
[   71.775767][ T5843] RBP: 00007f29e0a02063 R08: 0000000000000000 R09: 00007ffff7a47130
[   71.783733][ T5843] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f29e09e41c8
[   71.791703][ T5843] R13: 00007f29e09e41a8 R14: 0000000000000009 R15: 0000000000000000
[   71.799677][ T5843]  </TASK>
[   71.802964][ T5843] Kernel Offset: disabled
[   71.807280][ T5843] 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-build2480989676=/tmp/go-build -gno-record-gcc-switches'

git status (err=<nil>)
HEAD detached at 444551c40e
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=444551c40edde85b5e4900ae27d432bd1da7079c -X 'github.com/google/syzkaller/prog.gitRevisionDate=20241223-084141'" "-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=\"444551c40edde85b5e4900ae27d432bd1da7079c\"
/usr/bin/ld: /tmp/cctwUsHI.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