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 ffff888034a2e008 by task syz-executor/5849


CPU: 1 UID: 0 PID: 5849 Comm: syz-executor Not tainted 6.13.0-rc7-next-20250117-syzkaller-g0907e7fb3575 #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: 0033:0x7f4ea2d874ca
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:00007ffd7f09b4f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f4ea2e01ecb RCX: 00007f4ea2d874ca
RDX: 00007f4ea2e0ec27 RSI: 00007f4ea2e01ecb RDI: 00007f4ea2e0ec27
RBP: 00007f4ea2e020c3 R08: 0000000000000000 R09: 00000000000001ff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4ea2de41c8
R13: 00007f4ea2de41a8 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: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
 __do_sys_exit_group kernel/exit.c:1098 [inline]
 __se_sys_exit_group kernel/exit.c:1096 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1096
 x64_sys_call+0x26a8/0x26b0 arch/x86/include/generated/asm/syscalls_64.h:232
 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

The buggy address belongs to the object at ffff888034a2e000
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
 freed 512-byte region [ffff888034a2e000, ffff888034a2e200)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x34a2c
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 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801ac41c80 dead000000000100 dead000000000122
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000002 ffffea0000d28b01 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 5225, tgid 5225 (udevadm), ts 22219930174, free_ts 22213437021
 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 5225 tgid 5225 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]
 kmem_cache_alloc_noprof+0x1d9/0x380 mm/slub.c:4171
 seq_open+0x5f/0x140 fs/seq_file.c:63
 kernfs_fop_open+0x635/0xd10
 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

Memory state around the buggy address:
 ffff888034a2df00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888034a2df80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888034a2e000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff888034a2e080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888034a2e100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================


Warning: Permanently added '10.128.1.132' (ED25519) to the list of known hosts.
2025/01/19 01:41:53 ignoring optional flag "sandboxArg"="0"
2025/01/19 01:41:53 parsed 1 programs
[   67.407087][ T5835] cgroup: Unknown subsys name 'net'
[   67.538039][ T5835] cgroup: Unknown subsys name 'cpuset'
[   67.545849][ T5835] cgroup: Unknown subsys name 'rlimit'
[   68.815887][ T5835] Adding 124996k swap on ./swap-file.  Priority:0 extents:1 across:124996k 
[   71.569413][ T5849] ==================================================================
[   71.569447][ T5849] BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0
[   71.569493][ T5849] Write of size 8 at addr ffff888034a2e008 by task syz-executor/5849
[   71.569516][ T5849] 
** replaying previous printk message **
[   71.569516][ T5849] 
[   71.569550][ T5849] CPU: 1 UID: 0 PID: 5849 Comm: syz-executor Not tainted 6.13.0-rc7-next-20250117-syzkaller-g0907e7fb3575 #0
[   71.569567][ T5849] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[   71.569581][ T5849] Call Trace:
[   71.569587][ T5849]  <TASK>
[   71.569593][ T5849]  dump_stack_lvl+0x241/0x360
[   71.569610][ T5849]  ? __pfx_dump_stack_lvl+0x10/0x10
[   71.569624][ T5849]  ? __pfx__printk+0x10/0x10
[   71.569644][ T5849]  ? _printk+0xd5/0x120
[   71.569662][ T5849]  ? __virt_addr_valid+0x183/0x530
[   71.569681][ T5849]  ? __virt_addr_valid+0x183/0x530
[   71.569697][ T5849]  print_report+0x169/0x550
[   71.569718][ T5849]  ? __virt_addr_valid+0x183/0x530
[   71.569736][ T5849]  ? __virt_addr_valid+0x183/0x530
[   71.569755][ T5849]  ? __virt_addr_valid+0x45f/0x530
[   71.569771][ T5849]  ? __phys_addr+0xba/0x170
[   71.569788][ T5849]  ? binder_add_device+0x5f/0xa0
[   71.569803][ T5849]  kasan_report+0x143/0x180
[   71.569824][ T5849]  ? binder_add_device+0x5f/0xa0
[   71.569841][ T5849]  binder_add_device+0x5f/0xa0
[   71.569856][ T5849]  binderfs_binder_device_create+0x7bf/0x9c0
[   71.569873][ T5849]  binderfs_fill_super+0x944/0xd90
[   71.569889][ T5849]  ? __pfx_binderfs_fill_super+0x10/0x10
[   71.569913][ T5849]  ? shrinker_register+0x160/0x230
[   71.569932][ T5849]  ? sget_fc+0x909/0x9c0
[   71.569953][ T5849]  ? __pfx_set_anon_super_fc+0x10/0x10
[   71.569972][ T5849]  ? __pfx_binderfs_fill_super+0x10/0x10
[   71.569987][ T5849]  get_tree_nodev+0xb7/0x140
[   71.570007][ T5849]  vfs_get_tree+0x90/0x2b0
[   71.570027][ T5849]  do_new_mount+0x2be/0xb40
[   71.570053][ T5849]  ? __pfx_do_new_mount+0x10/0x10
[   71.570077][ T5849]  __se_sys_mount+0x2d6/0x3c0
[   71.570092][ T5849]  ? lockdep_hardirqs_on_prepare+0x43d/0x780
[   71.570113][ T5849]  ? __pfx___se_sys_mount+0x10/0x10
[   71.570141][ T5849]  ? do_syscall_64+0x100/0x230
[   71.570159][ T5849]  ? __x64_sys_mount+0x20/0xc0
[   71.570173][ T5849]  do_syscall_64+0xf3/0x230
[   71.570188][ T5849]  ? clear_bhb_loop+0x35/0x90
[   71.570210][ T5849]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   71.570234][ T5849] RIP: 0033:0x7f4ea2d874ca
[   71.570252][ T5849] 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
[   71.570265][ T5849] RSP: 002b:00007ffd7f09b4f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[   71.570282][ T5849] RAX: ffffffffffffffda RBX: 00007f4ea2e01ecb RCX: 00007f4ea2d874ca
[   71.570293][ T5849] RDX: 00007f4ea2e0ec27 RSI: 00007f4ea2e01ecb RDI: 00007f4ea2e0ec27
[   71.570303][ T5849] RBP: 00007f4ea2e020c3 R08: 0000000000000000 R09: 00000000000001ff
[   71.570312][ T5849] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4ea2de41c8
[   71.570323][ T5849] R13: 00007f4ea2de41a8 R14: 0000000000000009 R15: 0000000000000000
[   71.570337][ T5849]  </TASK>
[   71.570343][ T5849] 
[   71.570640][ T5849] Allocated by task 5844:
[   71.570660][ T5849]  kasan_save_track+0x3f/0x80
[   71.570690][ T5849]  __kasan_kmalloc+0x98/0xb0
[   71.570717][ T5849]  __kmalloc_cache_noprof+0x243/0x390
[   71.570742][ T5849]  binderfs_binder_device_create+0x16c/0x9c0
[   71.570765][ T5849]  binderfs_fill_super+0x944/0xd90
[   71.570787][ T5849]  get_tree_nodev+0xb7/0x140
[   71.570814][ T5849]  vfs_get_tree+0x90/0x2b0
[   71.570840][ T5849]  do_new_mount+0x2be/0xb40
[   71.570868][ T5849]  __se_sys_mount+0x2d6/0x3c0
[   71.570891][ T5849]  do_syscall_64+0xf3/0x230
[   71.570916][ T5849]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   71.570945][ T5849] 
[   71.570959][ T5849] Freed by task 5844:
[   71.570976][ T5849]  kasan_save_track+0x3f/0x80
[   71.571001][ T5849]  kasan_save_free_info+0x40/0x50
[   71.571027][ T5849]  __kasan_slab_free+0x59/0x70
[   71.571055][ T5849]  kfree+0x196/0x430
[   71.571076][ T5849]  evict+0x4e8/0x9a0
[   71.571102][ T5849]  __dentry_kill+0x20d/0x630
[   71.571126][ T5849]  shrink_kill+0xa9/0x2c0
[   71.571158][ T5849]  shrink_dentry_list+0x2c0/0x5b0
[   71.571183][ T5849]  shrink_dcache_parent+0xcb/0x3b0
[   71.571208][ T5849]  do_one_tree+0x23/0xe0
[   71.571232][ T5849]  shrink_dcache_for_umount+0xb4/0x180
[   71.571258][ T5849]  generic_shutdown_super+0x6a/0x2d0
[   71.571291][ T5849]  kill_litter_super+0x76/0xb0
[   71.571317][ T5849]  binderfs_kill_super+0x44/0x90
[   71.571340][ T5849]  deactivate_locked_super+0xc4/0x130
[   71.571365][ T5849]  cleanup_mnt+0x41f/0x4b0
[   71.571390][ T5849]  task_work_run+0x24f/0x310
[   71.571419][ T5849]  do_exit+0xa2a/0x28e0
[   71.571447][ T5849]  do_group_exit+0x207/0x2c0
[   71.571474][ T5849]  __x64_sys_exit_group+0x3f/0x40
[   71.571500][ T5849]  x64_sys_call+0x26a8/0x26b0
[   71.571526][ T5849]  do_syscall_64+0xf3/0x230
[   71.571551][ T5849]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   71.571580][ T5849] 
[   71.571594][ T5849] The buggy address belongs to the object at ffff888034a2e000
[   71.571594][ T5849]  which belongs to the cache kmalloc-512 of size 512
[   71.571617][ T5849] The buggy address is located 8 bytes inside of
[   71.571617][ T5849]  freed 512-byte region [ffff888034a2e000, ffff888034a2e200)
[   71.571643][ T5849] 
[   71.571657][ T5849] The buggy address belongs to the physical page:
[   71.571674][ T5849] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x34a2c
[   71.571712][ T5849] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   71.571735][ T5849] flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
[   71.571764][ T5849] page_type: f5(slab)
[   71.571788][ T5849] raw: 00fff00000000040 ffff88801ac41c80 dead000000000100 dead000000000122
[   71.571809][ T5849] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[   71.571833][ T5849] head: 00fff00000000040 ffff88801ac41c80 dead000000000100 dead000000000122
[   71.571856][ T5849] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[   71.571877][ T5849] head: 00fff00000000002 ffffea0000d28b01 ffffffffffffffff 0000000000000000
[   71.571896][ T5849] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[   71.571911][ T5849] page dumped because: kasan: bad access detected
[   71.571932][ T5849] page_owner tracks the page as allocated
[   71.571948][ T5849] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5225, tgid 5225 (udevadm), ts 22219930174, free_ts 22213437021
[   71.571989][ T5849]  post_alloc_hook+0x1f4/0x240
[   71.572016][ T5849]  get_page_from_freelist+0x365c/0x37a0
[   71.572043][ T5849]  __alloc_frozen_pages_noprof+0x292/0x710
[   71.572069][ T5849]  alloc_pages_mpol+0x311/0x660
[   71.572099][ T5849]  allocate_slab+0x8f/0x3a0
[   71.572124][ T5849]  ___slab_alloc+0xc27/0x14a0
[   71.572157][ T5849]  __slab_alloc+0x58/0xa0
[   71.572180][ T5849]  __kmalloc_cache_noprof+0x27b/0x390
[   71.572203][ T5849]  kernfs_fop_open+0x3e0/0xd10
[   71.572228][ T5849]  do_dentry_open+0xdec/0x1960
[   71.572250][ T5849]  vfs_open+0x3b/0x370
[   71.572271][ T5849]  path_openat+0x2c74/0x3580
[   71.572298][ T5849]  do_filp_open+0x27f/0x4e0
[   71.572323][ T5849]  do_sys_openat2+0x13e/0x1d0
[   71.572345][ T5849]  __x64_sys_openat+0x247/0x2a0
[   71.572367][ T5849]  do_syscall_64+0xf3/0x230
[   71.572392][ T5849] page last free pid 5225 tgid 5225 stack trace:
[   71.572411][ T5849]  free_frozen_pages+0xe0d/0x10e0
[   71.572436][ T5849]  __put_partials+0x160/0x1c0
[   71.572461][ T5849]  put_cpu_partial+0x17c/0x250
[   71.572488][ T5849]  __slab_free+0x290/0x380
[   71.572515][ T5849]  qlist_free_all+0x9a/0x140
[   71.572541][ T5849]  kasan_quarantine_reduce+0x14f/0x170
[   71.572567][ T5849]  __kasan_slab_alloc+0x23/0x80
[   71.572594][ T5849]  kmem_cache_alloc_noprof+0x1d9/0x380
[   71.572617][ T5849]  seq_open+0x5f/0x140
[   71.572642][ T5849]  kernfs_fop_open+0x635/0xd10
[   71.572666][ T5849]  do_dentry_open+0xdec/0x1960
[   71.572689][ T5849]  vfs_open+0x3b/0x370
[   71.572711][ T5849]  path_openat+0x2c74/0x3580
[   71.572737][ T5849]  do_filp_open+0x27f/0x4e0
[   71.572762][ T5849]  do_sys_openat2+0x13e/0x1d0
[   71.572786][ T5849]  __x64_sys_openat+0x247/0x2a0
[   71.572810][ T5849] 
[   71.572824][ T5849] Memory state around the buggy address:
[   71.572843][ T5849]  ffff888034a2df00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   71.572864][ T5849]  ffff888034a2df80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   71.572884][ T5849] >ffff888034a2e000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   71.572902][ T5849]                       ^
[   71.572920][ T5849]  ffff888034a2e080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   71.572940][ T5849]  ffff888034a2e100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   71.572957][ T5849] ==================================================================
[   71.580367][ T5852] ieee80211 phy3: Selected rate control algorithm 'minstrel_ht'
[   71.602387][ T5849] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[   72.441331][ T5849] CPU: 0 UID: 0 PID: 5849 Comm: syz-executor Not tainted 6.13.0-rc7-next-20250117-syzkaller-g0907e7fb3575 #0
[   72.453056][ T5849] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[   72.463224][ T5849] Call Trace:
[   72.466531][ T5849]  <TASK>
[   72.469475][ T5849]  dump_stack_lvl+0x241/0x360
[   72.474182][ T5849]  ? __pfx_dump_stack_lvl+0x10/0x10
[   72.479412][ T5849]  ? __pfx__printk+0x10/0x10
[   72.484116][ T5849]  ? preempt_schedule+0xe1/0xf0
[   72.488989][ T5849]  ? vscnprintf+0x5d/0x90
[   72.493514][ T5849]  panic+0x349/0x880
[   72.497429][ T5849]  ? check_panic_on_warn+0x21/0xb0
[   72.502560][ T5849]  ? __pfx_panic+0x10/0x10
[   72.506992][ T5849]  ? _raw_spin_unlock_irqrestore+0x130/0x140
[   72.513426][ T5849]  ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[   72.519776][ T5849]  ? print_report+0x502/0x550
[   72.524459][ T5849]  check_panic_on_warn+0x86/0xb0
[   72.529483][ T5849]  ? binder_add_device+0x5f/0xa0
[   72.534407][ T5849]  end_report+0x77/0x160
[   72.538641][ T5849]  kasan_report+0x154/0x180
[   72.543130][ T5849]  ? binder_add_device+0x5f/0xa0
[   72.548084][ T5849]  binder_add_device+0x5f/0xa0
[   72.552923][ T5849]  binderfs_binder_device_create+0x7bf/0x9c0
[   72.558886][ T5849]  binderfs_fill_super+0x944/0xd90
[   72.563981][ T5849]  ? __pfx_binderfs_fill_super+0x10/0x10
[   72.569606][ T5849]  ? shrinker_register+0x160/0x230
[   72.574704][ T5849]  ? sget_fc+0x909/0x9c0
[   72.578930][ T5849]  ? __pfx_set_anon_super_fc+0x10/0x10
[   72.584370][ T5849]  ? __pfx_binderfs_fill_super+0x10/0x10
[   72.590082][ T5849]  get_tree_nodev+0xb7/0x140
[   72.594686][ T5849]  vfs_get_tree+0x90/0x2b0
[   72.599098][ T5849]  do_new_mount+0x2be/0xb40
[   72.603591][ T5849]  ? __pfx_do_new_mount+0x10/0x10
[   72.608603][ T5849]  __se_sys_mount+0x2d6/0x3c0
[   72.613262][ T5849]  ? lockdep_hardirqs_on_prepare+0x43d/0x780
[   72.619252][ T5849]  ? __pfx___se_sys_mount+0x10/0x10
[   72.624437][ T5849]  ? do_syscall_64+0x100/0x230
[   72.629279][ T5849]  ? __x64_sys_mount+0x20/0xc0
[   72.634027][ T5849]  do_syscall_64+0xf3/0x230
[   72.638517][ T5849]  ? clear_bhb_loop+0x35/0x90
[   72.643199][ T5849]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   72.649259][ T5849] RIP: 0033:0x7f4ea2d874ca
[   72.653670][ T5849] 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
[   72.673276][ T5849] RSP: 002b:00007ffd7f09b4f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[   72.681680][ T5849] RAX: ffffffffffffffda RBX: 00007f4ea2e01ecb RCX: 00007f4ea2d874ca
[   72.689635][ T5849] RDX: 00007f4ea2e0ec27 RSI: 00007f4ea2e01ecb RDI: 00007f4ea2e0ec27
[   72.697687][ T5849] RBP: 00007f4ea2e020c3 R08: 0000000000000000 R09: 00000000000001ff
[   72.705641][ T5849] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4ea2de41c8
[   72.713591][ T5849] R13: 00007f4ea2de41a8 R14: 0000000000000009 R15: 0000000000000000
[   72.721550][ T5849]  </TASK>
[   72.725004][ T5849] Kernel Offset: disabled
[   72.729319][ T5849] 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-build2779469346=/tmp/go-build -gno-record-gcc-switches'

git status (err=<nil>)
HEAD detached at d3ccff6372
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=d3ccff6372e07c6aabd02b5da419aa6492b5f0ad -X 'github.com/google/syzkaller/prog.gitRevisionDate=20241226-091248'" "-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=\"d3ccff6372e07c6aabd02b5da419aa6492b5f0ad\"
/usr/bin/ld: /tmp/ccAR0159.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