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 ffff88802779f408 by task syz-executor.0/5867

CPU: 1 UID: 0 PID: 5867 Comm: syz-executor.0 Not tainted 6.13.0-syzkaller-09490-g9af5c78155a0 #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: 0033:0x7efea687e5ea
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdfc4fdbb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007efea68c8533 RCX: 00007efea687e5ea
RDX: 00007efea68d2e59 RSI: 00007efea68c8533 RDI: 00007efea68d2e59
RBP: 00007ffdfc4fdcb0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdfc4fe298
R13: 00007ffdfc4fe298 R14: 0000000000000001 R15: 00000000fffffff1
 </TASK>

Allocated by task 5862:
 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 5862:
 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:625
 shrink_kill+0xa9/0x2c0 fs/dcache.c:1070
 shrink_dentry_list+0x2c0/0x5b0 fs/dcache.c:1097
 shrink_dcache_parent+0xcb/0x3b0
 do_one_tree+0x23/0xe0 fs/dcache.c:1560
 shrink_dcache_for_umount+0xb4/0x180 fs/dcache.c:1577
 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 ffff88802779f400
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
 freed 512-byte region [ffff88802779f400, ffff88802779f600)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2779c
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 ffffea00009de701 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 5206, tgid 5206 (udevadm), ts 21523280910, free_ts 21506679555
 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:3828 [inline]
 path_openat+0x2c74/0x3580 fs/namei.c:3987
 do_filp_open+0x27f/0x4e0 fs/namei.c:4014
 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 5206 tgid 5206 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]
 __kmalloc_cache_noprof+0x1d9/0x390 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:3828 [inline]
 path_openat+0x2c74/0x3580 fs/namei.c:3987
 do_filp_open+0x27f/0x4e0 fs/namei.c:4014
 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

Memory state around the buggy address:
 ffff88802779f300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88802779f380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88802779f400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff88802779f480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88802779f500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================


Warning: Permanently added '10.128.1.185' (ED25519) to the list of known hosts.
2025/01/30 17:06:52 ignoring optional flag "sandboxArg"="0"
2025/01/30 17:06:52 ignoring optional flag "type"="gce"
2025/01/30 17:06:52 parsed 1 programs
[   60.430300][ T5829] cgroup: Unknown subsys name 'net'
[   60.666178][ T5829] cgroup: Unknown subsys name 'cpuset'
[   60.674109][ T5829] cgroup: Unknown subsys name 'rlimit'
[   61.753936][ T5838] Adding 124996k swap on ./swap-file.  Priority:0 extents:1 across:124996k 
[   61.847364][ T5862] 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.
[   61.965272][   T54] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[   61.973860][   T54] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[   61.981676][   T54] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[   61.991915][   T54] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[   62.003932][   T54] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3
[   62.011713][   T54] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[   62.063849][ T5867] ==================================================================
[   62.072199][ T5867] BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0
[   62.079980][ T5867] Write of size 8 at addr ffff88802779f408 by task syz-executor.0/5867
[   62.088214][ T5867] 
[   62.090550][ T5867] CPU: 1 UID: 0 PID: 5867 Comm: syz-executor.0 Not tainted 6.13.0-syzkaller-09490-g9af5c78155a0 #0
[   62.090565][ T5867] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[   62.090576][ T5867] Call Trace:
[   62.090585][ T5867]  <TASK>
[   62.090590][ T5867]  dump_stack_lvl+0x241/0x360
[   62.090612][ T5867]  ? __pfx_dump_stack_lvl+0x10/0x10
[   62.090625][ T5867]  ? __pfx__printk+0x10/0x10
[   62.090637][ T5867]  ? _printk+0xd5/0x120
[   62.090647][ T5867]  ? __virt_addr_valid+0x183/0x530
[   62.090665][ T5867]  ? __virt_addr_valid+0x183/0x530
[   62.090682][ T5867]  print_report+0x169/0x550
[   62.090701][ T5867]  ? __virt_addr_valid+0x183/0x530
[   62.090717][ T5867]  ? __virt_addr_valid+0x183/0x530
[   62.090733][ T5867]  ? __virt_addr_valid+0x45f/0x530
[   62.090749][ T5867]  ? __phys_addr+0xba/0x170
[   62.090765][ T5867]  ? binder_add_device+0x5f/0xa0
[   62.090781][ T5867]  kasan_report+0x143/0x180
[   62.090799][ T5867]  ? binder_add_device+0x5f/0xa0
[   62.090816][ T5867]  binder_add_device+0x5f/0xa0
[   62.090831][ T5867]  binderfs_binder_device_create+0x7bf/0x9c0
[   62.090849][ T5867]  binderfs_fill_super+0x944/0xd90
[   62.090866][ T5867]  ? __pfx_binderfs_fill_super+0x10/0x10
[   62.090888][ T5867]  ? shrinker_register+0x160/0x230
[   62.090904][ T5867]  ? sget_fc+0x909/0x9c0
[   62.090919][ T5867]  ? __pfx_set_anon_super_fc+0x10/0x10
[   62.090934][ T5867]  ? __pfx_binderfs_fill_super+0x10/0x10
[   62.090949][ T5867]  get_tree_nodev+0xb7/0x140
[   62.090964][ T5867]  vfs_get_tree+0x90/0x2b0
[   62.090981][ T5867]  do_new_mount+0x2be/0xb40
[   62.090995][ T5867]  ? __pfx_do_new_mount+0x10/0x10
[   62.091009][ T5867]  __se_sys_mount+0x2d6/0x3c0
[   62.091021][ T5867]  ? lockdep_hardirqs_on_prepare+0x43d/0x780
[   62.091039][ T5867]  ? __pfx___se_sys_mount+0x10/0x10
[   62.091051][ T5867]  ? do_syscall_64+0x100/0x230
[   62.091064][ T5867]  ? __x64_sys_mount+0x20/0xc0
[   62.091076][ T5867]  do_syscall_64+0xf3/0x230
[   62.091087][ T5867]  ? clear_bhb_loop+0x35/0x90
[   62.091112][ T5867]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   62.091128][ T5867] RIP: 0033:0x7efea687e5ea
[   62.091147][ T5867] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 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 b0 ff ff ff f7 d8 64 89 01 48
[   62.091157][ T5867] RSP: 002b:00007ffdfc4fdbb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[   62.091171][ T5867] RAX: ffffffffffffffda RBX: 00007efea68c8533 RCX: 00007efea687e5ea
[   62.091180][ T5867] RDX: 00007efea68d2e59 RSI: 00007efea68c8533 RDI: 00007efea68d2e59
[   62.091189][ T5867] RBP: 00007ffdfc4fdcb0 R08: 0000000000000000 R09: 0000000000000000
[   62.091196][ T5867] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdfc4fe298
[   62.091203][ T5867] R13: 00007ffdfc4fe298 R14: 0000000000000001 R15: 00000000fffffff1
[   62.091216][ T5867]  </TASK>
[   62.091220][ T5867] 
[   62.364038][ T5867] Allocated by task 5862:
[   62.368358][ T5867]  kasan_save_track+0x3f/0x80
[   62.373034][ T5867]  __kasan_kmalloc+0x98/0xb0
[   62.377616][ T5867]  __kmalloc_cache_noprof+0x243/0x390
[   62.382980][ T5867]  binderfs_binder_device_create+0x16c/0x9c0
[   62.388962][ T5867]  binderfs_fill_super+0x944/0xd90
[   62.394072][ T5867]  get_tree_nodev+0xb7/0x140
[   62.398656][ T5867]  vfs_get_tree+0x90/0x2b0
[   62.403068][ T5867]  do_new_mount+0x2be/0xb40
[   62.407561][ T5867]  __se_sys_mount+0x2d6/0x3c0
[   62.412235][ T5867]  do_syscall_64+0xf3/0x230
[   62.416814][ T5867]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   62.422782][ T5867] 
[   62.425093][ T5867] Freed by task 5862:
[   62.429055][ T5867]  kasan_save_track+0x3f/0x80
[   62.433906][ T5867]  kasan_save_free_info+0x40/0x50
[   62.439022][ T5867]  __kasan_slab_free+0x59/0x70
[   62.443777][ T5867]  kfree+0x196/0x430
[   62.447674][ T5867]  evict+0x4e8/0x9a0
[   62.451564][ T5867]  __dentry_kill+0x20d/0x630
[   62.456143][ T5867]  shrink_kill+0xa9/0x2c0
[   62.460459][ T5867]  shrink_dentry_list+0x2c0/0x5b0
[   62.465472][ T5867]  shrink_dcache_parent+0xcb/0x3b0
[   62.470577][ T5867]  do_one_tree+0x23/0xe0
[   62.474821][ T5867]  shrink_dcache_for_umount+0xb4/0x180
[   62.480267][ T5867]  generic_shutdown_super+0x6a/0x2d0
[   62.485562][ T5867]  kill_litter_super+0x76/0xb0
[   62.490337][ T5867]  binderfs_kill_super+0x44/0x90
[   62.495371][ T5867]  deactivate_locked_super+0xc4/0x130
[   62.500828][ T5867]  cleanup_mnt+0x41f/0x4b0
[   62.505268][ T5867]  task_work_run+0x24f/0x310
[   62.509851][ T5867]  do_exit+0xa2a/0x28e0
[   62.514032][ T5867]  do_group_exit+0x207/0x2c0
[   62.518616][ T5867]  get_signal+0x16b2/0x1750
[   62.523111][ T5867]  arch_do_signal_or_restart+0x96/0x860
[   62.528644][ T5867]  syscall_exit_to_user_mode+0xce/0x340
[   62.534186][ T5867]  do_syscall_64+0x100/0x230
[   62.538765][ T5867]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   62.544651][ T5867] 
[   62.546967][ T5867] The buggy address belongs to the object at ffff88802779f400
[   62.546967][ T5867]  which belongs to the cache kmalloc-512 of size 512
[   62.561103][ T5867] The buggy address is located 8 bytes inside of
[   62.561103][ T5867]  freed 512-byte region [ffff88802779f400, ffff88802779f600)
[   62.574715][ T5867] 
[   62.577028][ T5867] The buggy address belongs to the physical page:
[   62.583437][ T5867] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2779c
[   62.592539][ T5867] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   62.601024][ T5867] anon flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
[   62.609092][ T5867] page_type: f5(slab)
[   62.613067][ T5867] raw: 00fff00000000040 ffff88801ac41c80 0000000000000000 dead000000000001
[   62.621636][ T5867] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[   62.630214][ T5867] head: 00fff00000000040 ffff88801ac41c80 0000000000000000 dead000000000001
[   62.638874][ T5867] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[   62.647531][ T5867] head: 00fff00000000002 ffffea00009de701 ffffffffffffffff 0000000000000000
[   62.656197][ T5867] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[   62.664850][ T5867] page dumped because: kasan: bad access detected
[   62.671252][ T5867] page_owner tracks the page as allocated
[   62.677040][ T5867] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5206, tgid 5206 (udevadm), ts 21523280910, free_ts 21506679555
[   62.698053][ T5867]  post_alloc_hook+0x1f4/0x240
[   62.702899][ T5867]  get_page_from_freelist+0x365c/0x37a0
[   62.708436][ T5867]  __alloc_frozen_pages_noprof+0x292/0x710
[   62.714233][ T5867]  alloc_pages_mpol+0x311/0x660
[   62.719070][ T5867]  allocate_slab+0x8f/0x3a0
[   62.723568][ T5867]  ___slab_alloc+0xc27/0x14a0
[   62.728230][ T5867]  __slab_alloc+0x58/0xa0
[   62.732549][ T5867]  __kmalloc_cache_noprof+0x27b/0x390
[   62.737966][ T5867]  kernfs_fop_open+0x3e0/0xd10
[   62.742719][ T5867]  do_dentry_open+0xdec/0x1960
[   62.747497][ T5867]  vfs_open+0x3b/0x370
[   62.751553][ T5867]  path_openat+0x2c74/0x3580
[   62.756133][ T5867]  do_filp_open+0x27f/0x4e0
[   62.760626][ T5867]  do_sys_openat2+0x13e/0x1d0
[   62.765293][ T5867]  __x64_sys_openat+0x247/0x2a0
[   62.770134][ T5867]  do_syscall_64+0xf3/0x230
[   62.774621][ T5867] page last free pid 5206 tgid 5206 stack trace:
[   62.780930][ T5867]  free_frozen_pages+0xe0d/0x10e0
[   62.786075][ T5867]  __put_partials+0x160/0x1c0
[   62.790760][ T5867]  put_cpu_partial+0x17c/0x250
[   62.795535][ T5867]  __slab_free+0x290/0x380
[   62.799944][ T5867]  qlist_free_all+0x9a/0x140
[   62.804532][ T5867]  kasan_quarantine_reduce+0x14f/0x170
[   62.809982][ T5867]  __kasan_slab_alloc+0x23/0x80
[   62.814824][ T5867]  __kmalloc_cache_noprof+0x1d9/0x390
[   62.820356][ T5867]  kernfs_fop_open+0x3e0/0xd10
[   62.825130][ T5867]  do_dentry_open+0xdec/0x1960
[   62.829946][ T5867]  vfs_open+0x3b/0x370
[   62.834024][ T5867]  path_openat+0x2c74/0x3580
[   62.838637][ T5867]  do_filp_open+0x27f/0x4e0
[   62.843148][ T5867]  do_sys_openat2+0x13e/0x1d0
[   62.847820][ T5867]  __x64_sys_openat+0x247/0x2a0
[   62.852668][ T5867]  do_syscall_64+0xf3/0x230
[   62.857158][ T5867] 
[   62.859488][ T5867] Memory state around the buggy address:
[   62.865114][ T5867]  ffff88802779f300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   62.873269][ T5867]  ffff88802779f380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   62.881322][ T5867] >ffff88802779f400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   62.889371][ T5867]                       ^
[   62.893699][ T5867]  ffff88802779f480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   62.901743][ T5867]  ffff88802779f500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   62.909786][ T5867] ==================================================================
[   62.922592][ T5867] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[   62.929829][ T5867] CPU: 1 UID: 0 PID: 5867 Comm: syz-executor.0 Not tainted 6.13.0-syzkaller-09490-g9af5c78155a0 #0
[   62.940515][ T5867] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[   62.950596][ T5867] Call Trace:
[   62.953978][ T5867]  <TASK>
[   62.956915][ T5867]  dump_stack_lvl+0x241/0x360
[   62.961676][ T5867]  ? __pfx_dump_stack_lvl+0x10/0x10
[   62.966885][ T5867]  ? __pfx__printk+0x10/0x10
[   62.971474][ T5867]  ? preempt_schedule+0xe1/0xf0
[   62.976322][ T5867]  ? vscnprintf+0x5d/0x90
[   62.980643][ T5867]  panic+0x349/0x880
[   62.984538][ T5867]  ? check_panic_on_warn+0x21/0xb0
[   62.989643][ T5867]  ? __pfx_panic+0x10/0x10
[   62.994051][ T5867]  ? _raw_spin_unlock_irqrestore+0x130/0x140
[   63.000139][ T5867]  ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[   63.006476][ T5867]  ? print_report+0x502/0x550
[   63.011154][ T5867]  check_panic_on_warn+0x86/0xb0
[   63.016097][ T5867]  ? binder_add_device+0x5f/0xa0
[   63.021037][ T5867]  end_report+0x77/0x160
[   63.025294][ T5867]  kasan_report+0x154/0x180
[   63.029804][ T5867]  ? binder_add_device+0x5f/0xa0
[   63.034846][ T5867]  binder_add_device+0x5f/0xa0
[   63.039613][ T5867]  binderfs_binder_device_create+0x7bf/0x9c0
[   63.045609][ T5867]  binderfs_fill_super+0x944/0xd90
[   63.050733][ T5867]  ? __pfx_binderfs_fill_super+0x10/0x10
[   63.056377][ T5867]  ? shrinker_register+0x160/0x230
[   63.061494][ T5867]  ? sget_fc+0x909/0x9c0
[   63.065733][ T5867]  ? __pfx_set_anon_super_fc+0x10/0x10
[   63.071187][ T5867]  ? __pfx_binderfs_fill_super+0x10/0x10
[   63.076812][ T5867]  get_tree_nodev+0xb7/0x140
[   63.081392][ T5867]  vfs_get_tree+0x90/0x2b0
[   63.085807][ T5867]  do_new_mount+0x2be/0xb40
[   63.090299][ T5867]  ? __pfx_do_new_mount+0x10/0x10
[   63.095329][ T5867]  __se_sys_mount+0x2d6/0x3c0
[   63.100005][ T5867]  ? lockdep_hardirqs_on_prepare+0x43d/0x780
[   63.105981][ T5867]  ? __pfx___se_sys_mount+0x10/0x10
[   63.111174][ T5867]  ? do_syscall_64+0x100/0x230
[   63.115957][ T5867]  ? __x64_sys_mount+0x20/0xc0
[   63.120719][ T5867]  do_syscall_64+0xf3/0x230
[   63.125211][ T5867]  ? clear_bhb_loop+0x35/0x90
[   63.129883][ T5867]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   63.135769][ T5867] RIP: 0033:0x7efea687e5ea
[   63.140172][ T5867] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 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 b0 ff ff ff f7 d8 64 89 01 48
[   63.160049][ T5867] RSP: 002b:00007ffdfc4fdbb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[   63.168468][ T5867] RAX: ffffffffffffffda RBX: 00007efea68c8533 RCX: 00007efea687e5ea
[   63.176527][ T5867] RDX: 00007efea68d2e59 RSI: 00007efea68c8533 RDI: 00007efea68d2e59
[   63.184491][ T5867] RBP: 00007ffdfc4fdcb0 R08: 0000000000000000 R09: 0000000000000000
[   63.192473][ T5867] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdfc4fe298
[   63.200472][ T5867] R13: 00007ffdfc4fe298 R14: 0000000000000001 R15: 00000000fffffff1
[   63.208452][ T5867]  </TASK>
[   63.211724][ T5867] Kernel Offset: disabled
[   63.216131][ T5867] 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-build1307000679=/tmp/go-build -gno-record-gcc-switches'

git status (err=<nil>)
HEAD detached at 34889ee3b0
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
touch .descriptions
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=34889ee3b09e7b4d381828377aa6173bfcc36cc7 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240528-103526'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-fuzzer github.com/google/syzkaller/syz-fuzzer
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=34889ee3b09e7b4d381828377aa6173bfcc36cc7 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240528-103526'" "-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++14 -I. -Iexecutor/_include -fpermissive -w -DGOOS_linux=1 -DGOARCH_amd64=1 \
	-DHOSTGOOS_linux=1 -DGIT_REVISION=\"34889ee3b09e7b4d381828377aa6173bfcc36cc7\"