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 ffff88807e3ae008 by task syz-executor/5859
CPU: 1 UID: 0 PID: 5859 Comm: syz-executor Not tainted 6.13.0-next-20250131-syzkaller-10663-gdf4b2bbff898-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
__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: 0033:0x7ff2ff5874ca
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:00007ffe78c87538 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ff2ff601ecb RCX: 00007ff2ff5874ca
RDX: 00007ff2ff60ec27 RSI: 00007ff2ff601ecb RDI: 00007ff2ff60ec27
RBP: 00007ff2ff6020c3 R08: 0000000000000000 R09: 00000000000001ff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff2ff5e41c8
R13: 00007ff2ff5e41a8 R14: 0000000000000009 R15: 0000000000000000
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 ffff88807e3ae000
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
freed 512-byte region [ffff88807e3ae000, ffff88807e3ae200)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7e3ac
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 ffffea0001f8eb01 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 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5844, tgid 5844 (syz-executor), ts 96431371296, free_ts 96419561915
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]
__do_kmalloc_node mm/slub.c:4293 [inline]
__kmalloc_noprof+0x2e6/0x4c0 mm/slub.c:4306
kmalloc_noprof include/linux/slab.h:905 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
tomoyo_init_log+0x1b3d/0x2050 security/tomoyo/audit.c:275
tomoyo_supervisor+0x399/0x1a10 security/tomoyo/common.c:2198
tomoyo_audit_path_log security/tomoyo/file.c:168 [inline]
tomoyo_path_permission+0x243/0x360 security/tomoyo/file.c:587
tomoyo_path_perm+0x490/0x740 security/tomoyo/file.c:838
tomoyo_sb_umount+0xd0/0x110 security/tomoyo/tomoyo.c:430
security_sb_umount+0xb9/0x280 security/security.c:1584
do_umount fs/namespace.c:1882 [inline]
path_umount+0x394/0xf80 fs/namespace.c:2051
ksys_umount fs/namespace.c:2074 [inline]
__do_sys_umount fs/namespace.c:2079 [inline]
__se_sys_umount fs/namespace.c:2077 [inline]
__x64_sys_umount+0x123/0x170 fs/namespace.c:2077
page last free pid 5844 tgid 5844 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]
__kmalloc_cache_noprof+0x243/0x390 mm/slub.c:4325
kmalloc_noprof include/linux/slab.h:901 [inline]
tomoyo_print_header security/tomoyo/audit.c:156 [inline]
tomoyo_init_log+0x1ca/0x2050 security/tomoyo/audit.c:255
tomoyo_supervisor+0x399/0x1a10 security/tomoyo/common.c:2198
tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline]
tomoyo_path_number_perm+0x5d3/0x860 security/tomoyo/file.c:734
tomoyo_path_mkdir+0xe7/0x130 security/tomoyo/tomoyo.c:179
security_path_mkdir+0x171/0x370 security/security.c:1932
do_mkdirat+0x1c4/0x3a0 fs/namei.c:4333
__do_sys_mkdirat fs/namei.c:4351 [inline]
__se_sys_mkdirat fs/namei.c:4349 [inline]
__x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4349
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Memory state around the buggy address:
ffff88807e3adf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88807e3adf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88807e3ae000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88807e3ae080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88807e3ae100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Warning: Permanently added '10.128.10.56' (ED25519) to the list of known hosts.
2025/01/31 09:11:32 ignoring optional flag "sandboxArg"="0"
2025/01/31 09:11:32 parsed 1 programs
[ 90.321606][ T5833] cgroup: Unknown subsys name 'net'
[ 90.471806][ T5833] cgroup: Unknown subsys name 'cpuset'
[ 90.481546][ T5833] cgroup: Unknown subsys name 'rlimit'
[ 92.111547][ T5833] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 92.349957][ T1596] cfg80211: failed to load regulatory.db
[ 95.152038][ T5844] chnl_net:caif_netlink_parms(): no params data found
[ 95.243000][ T5844] bridge0: port 1(bridge_slave_0) entered blocking state
[ 95.251066][ T5844] bridge0: port 1(bridge_slave_0) entered disabled state
[ 95.258738][ T5844] bridge_slave_0: entered allmulticast mode
[ 95.265804][ T5844] bridge_slave_0: entered promiscuous mode
[ 95.275651][ T5844] bridge0: port 2(bridge_slave_1) entered blocking state
[ 95.283094][ T5844] bridge0: port 2(bridge_slave_1) entered disabled state
[ 95.291120][ T5844] bridge_slave_1: entered allmulticast mode
[ 95.298361][ T5844] bridge_slave_1: entered promiscuous mode
[ 95.332801][ T5844] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 95.344606][ T5844] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 95.380861][ T5844] team0: Port device team_slave_0 added
[ 95.390183][ T5844] team0: Port device team_slave_1 added
[ 95.422012][ T5844] batman_adv: batadv0: Adding interface: batadv_slave_0
[ 95.429070][ T5844] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem.
[ 95.455108][ T5844] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[ 95.468332][ T5844] batman_adv: batadv0: Adding interface: batadv_slave_1
[ 95.475292][ T5844] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem.
[ 95.501232][ T5844] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[ 95.550397][ T5844] hsr_slave_0: entered promiscuous mode
[ 95.557955][ T5844] hsr_slave_1: entered promiscuous mode
[ 95.721223][ T5844] netdevsim netdevsim0 netdevsim0: renamed from eth0
[ 95.732933][ T5844] netdevsim netdevsim0 netdevsim1: renamed from eth1
[ 95.744556][ T5844] netdevsim netdevsim0 netdevsim2: renamed from eth2
[ 95.755819][ T5844] netdevsim netdevsim0 netdevsim3: renamed from eth3
[ 95.791355][ T5844] bridge0: port 2(bridge_slave_1) entered blocking state
[ 95.798711][ T5844] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 95.806587][ T5844] bridge0: port 1(bridge_slave_0) entered blocking state
[ 95.813839][ T5844] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 95.888222][ T5844] 8021q: adding VLAN 0 to HW filter on device bond0
[ 95.913934][ T50] bridge0: port 1(bridge_slave_0) entered disabled state
[ 95.923453][ T50] bridge0: port 2(bridge_slave_1) entered disabled state
[ 95.942257][ T5844] 8021q: adding VLAN 0 to HW filter on device team0
[ 95.958296][ T2959] bridge0: port 1(bridge_slave_0) entered blocking state
[ 95.965605][ T2959] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 95.981209][ T50] bridge0: port 2(bridge_slave_1) entered blocking state
[ 95.988500][ T50] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 96.174823][ T5844] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 96.226638][ T5844] veth0_vlan: entered promiscuous mode
[ 96.242551][ T5844] veth1_vlan: entered promiscuous mode
[ 96.276682][ T5844] veth0_macvtap: entered promiscuous mode
[ 96.289184][ T5844] veth1_macvtap: entered promiscuous mode
[ 96.311441][ T5844] batman_adv: batadv0: Interface activated: batadv_slave_0
[ 96.329876][ T5844] batman_adv: batadv0: Interface activated: batadv_slave_1
[ 96.344453][ T5844] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[ 96.353968][ T5844] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[ 96.363453][ T5844] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[ 96.372543][ T5844] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[ 96.455531][ T5844] 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.
[ 96.633813][ T50] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[ 96.696467][ T50] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[ 96.736267][ T5859] ==================================================================
[ 96.744363][ T5859] BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0
[ 96.752090][ T5859] Write of size 8 at addr ffff88807e3ae008 by task syz-executor/5859
[ 96.760134][ T5859]
[ 96.762454][ T5859] CPU: 1 UID: 0 PID: 5859 Comm: syz-executor Not tainted 6.13.0-next-20250131-syzkaller-10663-gdf4b2bbff898-dirty #0
[ 96.762466][ T5859] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 96.762477][ T5859] Call Trace:
[ 96.762483][ T5859]
[ 96.762488][ T5859] dump_stack_lvl+0x241/0x360
[ 96.762503][ T5859] ? __pfx_dump_stack_lvl+0x10/0x10
[ 96.762512][ T5859] ? __pfx__printk+0x10/0x10
[ 96.762522][ T5859] ? _printk+0xd5/0x120
[ 96.762530][ T5859] ? __virt_addr_valid+0x183/0x530
[ 96.762543][ T5859] ? __virt_addr_valid+0x183/0x530
[ 96.762556][ T5859] print_report+0x169/0x550
[ 96.762570][ T5859] ? __virt_addr_valid+0x183/0x530
[ 96.762582][ T5859] ? __virt_addr_valid+0x183/0x530
[ 96.762594][ T5859] ? __virt_addr_valid+0x45f/0x530
[ 96.762606][ T5859] ? __phys_addr+0xba/0x170
[ 96.762618][ T5859] ? binder_add_device+0x5f/0xa0
[ 96.762627][ T5859] kasan_report+0x143/0x180
[ 96.762636][ T5859] ? binder_add_device+0x5f/0xa0
[ 96.762646][ T5859] binder_add_device+0x5f/0xa0
[ 96.762656][ T5859] binderfs_binder_device_create+0x7bf/0x9c0
[ 96.762673][ T5859] binderfs_fill_super+0x944/0xd90
[ 96.762687][ T5859] ? __pfx_binderfs_fill_super+0x10/0x10
[ 96.762706][ T5859] ? shrinker_register+0x160/0x230
[ 96.762719][ T5859] ? sget_fc+0x909/0x9c0
[ 96.762731][ T5859] ? __pfx_set_anon_super_fc+0x10/0x10
[ 96.762742][ T5859] ? __pfx_binderfs_fill_super+0x10/0x10
[ 96.762755][ T5859] get_tree_nodev+0xb7/0x140
[ 96.762767][ T5859] vfs_get_tree+0x90/0x2b0
[ 96.762780][ T5859] do_new_mount+0x2be/0xb40
[ 96.762791][ T5859] ? __pfx_do_new_mount+0x10/0x10
[ 96.762802][ T5859] __se_sys_mount+0x2d6/0x3c0
[ 96.762812][ T5859] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 96.762826][ T5859] ? __pfx___se_sys_mount+0x10/0x10
[ 96.762835][ T5859] ? do_syscall_64+0x100/0x230
[ 96.762848][ T5859] ? __x64_sys_mount+0x20/0xc0
[ 96.762858][ T5859] do_syscall_64+0xf3/0x230
[ 96.762868][ T5859] ? clear_bhb_loop+0x35/0x90
[ 96.762882][ T5859] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 96.762894][ T5859] RIP: 0033:0x7ff2ff5874ca
[ 96.762907][ T5859] 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
[ 96.762915][ T5859] RSP: 002b:00007ffe78c87538 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 96.762925][ T5859] RAX: ffffffffffffffda RBX: 00007ff2ff601ecb RCX: 00007ff2ff5874ca
[ 96.762932][ T5859] RDX: 00007ff2ff60ec27 RSI: 00007ff2ff601ecb RDI: 00007ff2ff60ec27
[ 96.762938][ T5859] RBP: 00007ff2ff6020c3 R08: 0000000000000000 R09: 00000000000001ff
[ 96.762944][ T5859] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff2ff5e41c8
[ 96.762950][ T5859] R13: 00007ff2ff5e41a8 R14: 0000000000000009 R15: 0000000000000000
[ 96.762959][ T5859]
[ 96.762963][ T5859]
[ 97.036704][ T5859] Allocated by task 5844:
[ 97.041019][ T5859] kasan_save_track+0x3f/0x80
[ 97.045693][ T5859] __kasan_kmalloc+0x98/0xb0
[ 97.050455][ T5859] __kmalloc_cache_noprof+0x243/0x390
[ 97.056073][ T5859] binderfs_binder_device_create+0x16c/0x9c0
[ 97.062062][ T5859] binderfs_fill_super+0x944/0xd90
[ 97.067188][ T5859] get_tree_nodev+0xb7/0x140
[ 97.071778][ T5859] vfs_get_tree+0x90/0x2b0
[ 97.076185][ T5859] do_new_mount+0x2be/0xb40
[ 97.080704][ T5859] __se_sys_mount+0x2d6/0x3c0
[ 97.085389][ T5859] do_syscall_64+0xf3/0x230
[ 97.089896][ T5859] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 97.095795][ T5859]
[ 97.098113][ T5859] Freed by task 5844:
[ 97.102086][ T5859] kasan_save_track+0x3f/0x80
[ 97.106753][ T5859] kasan_save_free_info+0x40/0x50
[ 97.111828][ T5859] __kasan_slab_free+0x59/0x70
[ 97.116589][ T5859] kfree+0x196/0x430
[ 97.120479][ T5859] evict+0x4e8/0x9a0
[ 97.124374][ T5859] __dentry_kill+0x20d/0x630
[ 97.128956][ T5859] shrink_kill+0xa9/0x2c0
[ 97.133279][ T5859] shrink_dentry_list+0x2c0/0x5b0
[ 97.138292][ T5859] shrink_dcache_parent+0xcb/0x3b0
[ 97.143389][ T5859] do_one_tree+0x23/0xe0
[ 97.147620][ T5859] shrink_dcache_for_umount+0xb4/0x180
[ 97.153072][ T5859] generic_shutdown_super+0x6a/0x2d0
[ 97.158350][ T5859] kill_litter_super+0x76/0xb0
[ 97.163103][ T5859] binderfs_kill_super+0x44/0x90
[ 97.168030][ T5859] deactivate_locked_super+0xc4/0x130
[ 97.173390][ T5859] cleanup_mnt+0x41f/0x4b0
[ 97.177794][ T5859] task_work_run+0x24f/0x310
[ 97.182377][ T5859] do_exit+0xa2a/0x28e0
[ 97.186520][ T5859] do_group_exit+0x207/0x2c0
[ 97.191101][ T5859] get_signal+0x16b2/0x1750
[ 97.195599][ T5859] arch_do_signal_or_restart+0x96/0x860
[ 97.201134][ T5859] syscall_exit_to_user_mode+0xce/0x340
[ 97.206668][ T5859] do_syscall_64+0x100/0x230
[ 97.211244][ T5859] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 97.217132][ T5859]
[ 97.219442][ T5859] The buggy address belongs to the object at ffff88807e3ae000
[ 97.219442][ T5859] which belongs to the cache kmalloc-512 of size 512
[ 97.233478][ T5859] The buggy address is located 8 bytes inside of
[ 97.233478][ T5859] freed 512-byte region [ffff88807e3ae000, ffff88807e3ae200)
[ 97.247091][ T5859]
[ 97.249418][ T5859] The buggy address belongs to the physical page:
[ 97.255840][ T5859] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7e3ac
[ 97.264618][ T5859] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 97.273285][ T5859] flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
[ 97.280854][ T5859] page_type: f5(slab)
[ 97.284840][ T5859] raw: 00fff00000000040 ffff88801ac41c80 dead000000000122 0000000000000000
[ 97.293412][ T5859] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 97.302073][ T5859] head: 00fff00000000040 ffff88801ac41c80 dead000000000122 0000000000000000
[ 97.311100][ T5859] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 97.319780][ T5859] head: 00fff00000000002 ffffea0001f8eb01 ffffffffffffffff 0000000000000000
[ 97.328460][ T5859] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[ 97.337157][ T5859] page dumped because: kasan: bad access detected
[ 97.343568][ T5859] page_owner tracks the page as allocated
[ 97.349364][ T5859] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5844, tgid 5844 (syz-executor), ts 96431371296, free_ts 96419561915
[ 97.370025][ T5859] post_alloc_hook+0x1f4/0x240
[ 97.374787][ T5859] get_page_from_freelist+0x365c/0x37a0
[ 97.380337][ T5859] __alloc_frozen_pages_noprof+0x292/0x710
[ 97.386161][ T5859] alloc_pages_mpol+0x311/0x660
[ 97.391043][ T5859] allocate_slab+0x8f/0x3a0
[ 97.395553][ T5859] ___slab_alloc+0xc27/0x14a0
[ 97.400223][ T5859] __slab_alloc+0x58/0xa0
[ 97.404545][ T5859] __kmalloc_noprof+0x2e6/0x4c0
[ 97.409397][ T5859] tomoyo_init_log+0x1b3d/0x2050
[ 97.414328][ T5859] tomoyo_supervisor+0x399/0x1a10
[ 97.419340][ T5859] tomoyo_path_permission+0x243/0x360
[ 97.424711][ T5859] tomoyo_path_perm+0x490/0x740
[ 97.429638][ T5859] tomoyo_sb_umount+0xd0/0x110
[ 97.434432][ T5859] security_sb_umount+0xb9/0x280
[ 97.439357][ T5859] path_umount+0x394/0xf80
[ 97.443774][ T5859] __x64_sys_umount+0x123/0x170
[ 97.448618][ T5859] page last free pid 5844 tgid 5844 stack trace:
[ 97.454936][ T5859] free_frozen_pages+0xe0d/0x10e0
[ 97.459953][ T5859] stack_depot_save_flags+0x7c6/0x940
[ 97.465317][ T5859] kasan_save_track+0x51/0x80
[ 97.470020][ T5859] __kasan_kmalloc+0x98/0xb0
[ 97.474602][ T5859] __kmalloc_cache_noprof+0x243/0x390
[ 97.479963][ T5859] tomoyo_init_log+0x1ca/0x2050
[ 97.484800][ T5859] tomoyo_supervisor+0x399/0x1a10
[ 97.489809][ T5859] tomoyo_path_number_perm+0x5d3/0x860
[ 97.495259][ T5859] tomoyo_path_mkdir+0xe7/0x130
[ 97.500196][ T5859] security_path_mkdir+0x171/0x370
[ 97.505300][ T5859] do_mkdirat+0x1c4/0x3a0
[ 97.509655][ T5859] __x64_sys_mkdirat+0x87/0xa0
[ 97.514484][ T5859] do_syscall_64+0xf3/0x230
[ 97.518977][ T5859] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 97.524866][ T5859]
[ 97.527188][ T5859] Memory state around the buggy address:
[ 97.532813][ T5859] ffff88807e3adf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 97.540863][ T5859] ffff88807e3adf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 97.548918][ T5859] >ffff88807e3ae000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 97.556967][ T5859] ^
[ 97.561279][ T5859] ffff88807e3ae080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 97.569326][ T5859] ffff88807e3ae100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 97.577372][ T5859] ==================================================================
[ 97.604233][ T5859] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 97.611482][ T5859] CPU: 1 UID: 0 PID: 5859 Comm: syz-executor Not tainted 6.13.0-next-20250131-syzkaller-10663-gdf4b2bbff898-dirty #0
[ 97.623740][ T5859] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 97.633819][ T5859] Call Trace:
[ 97.637114][ T5859]
[ 97.640056][ T5859] dump_stack_lvl+0x241/0x360
[ 97.644751][ T5859] ? __pfx_dump_stack_lvl+0x10/0x10
[ 97.649971][ T5859] ? __pfx__printk+0x10/0x10
[ 97.654577][ T5859] ? preempt_schedule+0xe1/0xf0
[ 97.659444][ T5859] ? vscnprintf+0x5d/0x90
[ 97.663793][ T5859] panic+0x349/0x880
[ 97.667679][ T5859] ? check_panic_on_warn+0x21/0xb0
[ 97.672875][ T5859] ? __pfx_panic+0x10/0x10
[ 97.677279][ T5859] ? _raw_spin_unlock_irqrestore+0x130/0x140
[ 97.683249][ T5859] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[ 97.689563][ T5859] ? print_report+0x502/0x550
[ 97.694239][ T5859] check_panic_on_warn+0x86/0xb0
[ 97.699170][ T5859] ? binder_add_device+0x5f/0xa0
[ 97.704138][ T5859] end_report+0x77/0x160
[ 97.708372][ T5859] kasan_report+0x154/0x180
[ 97.712868][ T5859] ? binder_add_device+0x5f/0xa0
[ 97.717970][ T5859] binder_add_device+0x5f/0xa0
[ 97.722719][ T5859] binderfs_binder_device_create+0x7bf/0x9c0
[ 97.728699][ T5859] binderfs_fill_super+0x944/0xd90
[ 97.733809][ T5859] ? __pfx_binderfs_fill_super+0x10/0x10
[ 97.739454][ T5859] ? shrinker_register+0x160/0x230
[ 97.744566][ T5859] ? sget_fc+0x909/0x9c0
[ 97.748808][ T5859] ? __pfx_set_anon_super_fc+0x10/0x10
[ 97.754286][ T5859] ? __pfx_binderfs_fill_super+0x10/0x10
[ 97.759945][ T5859] get_tree_nodev+0xb7/0x140
[ 97.764548][ T5859] vfs_get_tree+0x90/0x2b0
[ 97.769074][ T5859] do_new_mount+0x2be/0xb40
[ 97.774018][ T5859] ? __pfx_do_new_mount+0x10/0x10
[ 97.779102][ T5859] __se_sys_mount+0x2d6/0x3c0
[ 97.783778][ T5859] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 97.789762][ T5859] ? __pfx___se_sys_mount+0x10/0x10
[ 97.794956][ T5859] ? do_syscall_64+0x100/0x230
[ 97.799722][ T5859] ? __x64_sys_mount+0x20/0xc0
[ 97.804486][ T5859] do_syscall_64+0xf3/0x230
[ 97.808993][ T5859] ? clear_bhb_loop+0x35/0x90
[ 97.813672][ T5859] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 97.819662][ T5859] RIP: 0033:0x7ff2ff5874ca
[ 97.824077][ T5859] 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
[ 97.843761][ T5859] RSP: 002b:00007ffe78c87538 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 97.852169][ T5859] RAX: ffffffffffffffda RBX: 00007ff2ff601ecb RCX: 00007ff2ff5874ca
[ 97.860136][ T5859] RDX: 00007ff2ff60ec27 RSI: 00007ff2ff601ecb RDI: 00007ff2ff60ec27
[ 97.868100][ T5859] RBP: 00007ff2ff6020c3 R08: 0000000000000000 R09: 00000000000001ff
[ 97.876060][ T5859] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff2ff5e41c8
[ 97.884065][ T5859] R13: 00007ff2ff5e41a8 R14: 0000000000000009 R15: 0000000000000000
[ 97.892054][ T5859]
[ 97.896365][ T5859] Kernel Offset: disabled
[ 97.900702][ T5859] Rebooting in 86400 seconds..
syzkaller build log:
go env (err=)
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-build3285125944=/tmp/go-build -gno-record-gcc-switches'
git status (err=)
HEAD detached at 6dbc6a9bc7
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=6dbc6a9bc76e06852841ed5c5bdbb78409b17f53 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20250110-142744'" "-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=\"6dbc6a9bc76e06852841ed5c5bdbb78409b17f53\"
/usr/bin/ld: /tmp/ccfK8qiK.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