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 ffff88807ed59008 by task syz-executor/5861
CPU: 0 UID: 0 PID: 5861 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:
__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: 0033:0x7f63be77f79a
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:00007ffeb4ae6628 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f63be7f0659 RCX: 00007f63be77f79a
RDX: 00007f63be7fba5f RSI: 00007f63be7f0659 RDI: 00007f63be7fba5f
RBP: 00007f63be7f0868 R08: 0000000000000000 R09: 00000000000001ff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f63be7db040
R13: 00007f63be7db020 R14: 0000000000000009 R15: 0000000000000000
Allocated by task 5842:
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 5842:
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 ffff88807ed59000
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
freed 512-byte region [ffff88807ed59000, ffff88807ed59200)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7ed58
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 ffffea0001fb5601 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 5842, tgid 5842 (syz-executor), ts 70342129737, free_ts 70334929140
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+0x3a4/0x1770 security/tomoyo/common.c:2119
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:4331
__do_sys_mkdirat fs/namei.c:4349 [inline]
__se_sys_mkdirat fs/namei.c:4347 [inline]
__x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4347
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 5842 tgid 5842 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
__slab_free+0x2c2/0x380 mm/slub.c:4520
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_add_entry security/tomoyo/common.c:2023 [inline]
tomoyo_supervisor+0xe6c/0x1770 security/tomoyo/common.c:2125
tomoyo_audit_mount_log security/tomoyo/mount.c:32 [inline]
tomoyo_mount_acl security/tomoyo/mount.c:166 [inline]
tomoyo_mount_permission+0x795/0xb80 security/tomoyo/mount.c:237
security_sb_mount+0xe0/0x2f0 security/security.c:1570
path_mount+0xb9/0xfa0 fs/namespace.c:3829
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
Memory state around the buggy address:
ffff88807ed58f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88807ed58f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88807ed59000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88807ed59080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88807ed59100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Warning: Permanently added '10.128.10.44' (ED25519) to the list of known hosts.
2025/01/20 07:08:30 ignoring optional flag "sandboxArg"="0"
2025/01/20 07:08:31 parsed 1 programs
[ 65.646601][ T5834] cgroup: Unknown subsys name 'net'
[ 65.751682][ T5834] cgroup: Unknown subsys name 'cpuset'
[ 65.759767][ T5834] cgroup: Unknown subsys name 'rlimit'
[ 67.037854][ T5834] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 69.573026][ T5842] chnl_net:caif_netlink_parms(): no params data found
[ 69.619194][ T5842] bridge0: port 1(bridge_slave_0) entered blocking state
[ 69.619754][ T5842] bridge0: port 1(bridge_slave_0) entered disabled state
[ 69.620295][ T5842] bridge_slave_0: entered allmulticast mode
[ 69.621461][ T5842] bridge_slave_0: entered promiscuous mode
[ 69.624786][ T5842] bridge0: port 2(bridge_slave_1) entered blocking state
[ 69.624925][ T5842] bridge0: port 2(bridge_slave_1) entered disabled state
[ 69.625050][ T5842] bridge_slave_1: entered allmulticast mode
[ 69.626139][ T5842] bridge_slave_1: entered promiscuous mode
[ 69.670835][ T5842] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 69.673297][ T5842] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 69.702548][ T5842] team0: Port device team_slave_0 added
[ 69.706001][ T5842] team0: Port device team_slave_1 added
[ 69.721929][ T5842] batman_adv: batadv0: Adding interface: batadv_slave_0
[ 69.721979][ T5842] 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.
[ 69.722014][ T5842] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[ 69.724397][ T5842] batman_adv: batadv0: Adding interface: batadv_slave_1
[ 69.724435][ T5842] 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.
[ 69.724471][ T5842] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[ 69.814748][ T5842] hsr_slave_0: entered promiscuous mode
[ 69.815566][ T5842] hsr_slave_1: entered promiscuous mode
[ 69.906889][ T5842] netdevsim netdevsim0 netdevsim0: renamed from eth0
[ 69.916652][ T5842] netdevsim netdevsim0 netdevsim1: renamed from eth1
[ 69.925754][ T5842] netdevsim netdevsim0 netdevsim2: renamed from eth2
[ 69.934909][ T5842] netdevsim netdevsim0 netdevsim3: renamed from eth3
[ 69.958829][ T5842] bridge0: port 2(bridge_slave_1) entered blocking state
[ 69.958985][ T5842] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 69.959670][ T5842] bridge0: port 1(bridge_slave_0) entered blocking state
[ 69.959766][ T5842] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 70.010945][ T5842] 8021q: adding VLAN 0 to HW filter on device bond0
[ 70.023606][ T82] bridge0: port 1(bridge_slave_0) entered disabled state
[ 70.031630][ T82] bridge0: port 2(bridge_slave_1) entered disabled state
[ 70.047425][ T5842] 8021q: adding VLAN 0 to HW filter on device team0
[ 70.056614][ T1905] bridge0: port 1(bridge_slave_0) entered blocking state
[ 70.056728][ T1905] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 70.062515][ T1905] bridge0: port 2(bridge_slave_1) entered blocking state
[ 70.062598][ T1905] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 70.184005][ T5842] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 70.224202][ T5842] veth0_vlan: entered promiscuous mode
[ 70.230371][ T5842] veth1_vlan: entered promiscuous mode
[ 70.247896][ T5842] veth0_macvtap: entered promiscuous mode
[ 70.252761][ T5842] veth1_macvtap: entered promiscuous mode
[ 70.264568][ T5842] batman_adv: batadv0: Interface activated: batadv_slave_0
[ 70.277017][ T5842] batman_adv: batadv0: Interface activated: batadv_slave_1
[ 70.281608][ T5842] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[ 70.281708][ T5842] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[ 70.281747][ T5842] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[ 70.281784][ T5842] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[ 70.355124][ 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.
[ 70.467235][ T1905] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[ 70.571180][ T1905] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[ 70.600263][ T5861] ==================================================================
[ 70.600289][ T5861] BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0
[ 70.600325][ T5861] Write of size 8 at addr ffff88807ed59008 by task syz-executor/5861
[ 70.600338][ T5861]
[ 70.600362][ T5861] CPU: 0 UID: 0 PID: 5861 Comm: syz-executor Not tainted 6.13.0-rc7-next-20250117-syzkaller-g0907e7fb3575 #0
[ 70.600373][ T5861] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 70.600382][ T5861] Call Trace:
[ 70.600386][ T5861]
[ 70.600390][ T5861] dump_stack_lvl+0x241/0x360
[ 70.600402][ T5861] ? __pfx_dump_stack_lvl+0x10/0x10
[ 70.600411][ T5861] ? __pfx__printk+0x10/0x10
[ 70.600426][ T5861] ? _printk+0xd5/0x120
[ 70.600439][ T5861] ? __virt_addr_valid+0x183/0x530
[ 70.600453][ T5861] ? __virt_addr_valid+0x183/0x530
[ 70.600466][ T5861] print_report+0x169/0x550
[ 70.600480][ T5861] ? __virt_addr_valid+0x183/0x530
[ 70.600493][ T5861] ? __virt_addr_valid+0x183/0x530
[ 70.600505][ T5861] ? __virt_addr_valid+0x45f/0x530
[ 70.600517][ T5861] ? __phys_addr+0xba/0x170
[ 70.600530][ T5861] ? binder_add_device+0x5f/0xa0
[ 70.600539][ T5861] kasan_report+0x143/0x180
[ 70.600552][ T5861] ? binder_add_device+0x5f/0xa0
[ 70.600562][ T5861] binder_add_device+0x5f/0xa0
[ 70.600572][ T5861] binderfs_binder_device_create+0x7bf/0x9c0
[ 70.600583][ T5861] binderfs_fill_super+0x944/0xd90
[ 70.600593][ T5861] ? __pfx_binderfs_fill_super+0x10/0x10
[ 70.600606][ T5861] ? shrinker_register+0x160/0x230
[ 70.600617][ T5861] ? sget_fc+0x909/0x9c0
[ 70.600629][ T5861] ? __pfx_set_anon_super_fc+0x10/0x10
[ 70.600640][ T5861] ? __pfx_binderfs_fill_super+0x10/0x10
[ 70.600649][ T5861] get_tree_nodev+0xb7/0x140
[ 70.600660][ T5861] vfs_get_tree+0x90/0x2b0
[ 70.600672][ T5861] do_new_mount+0x2be/0xb40
[ 70.600687][ T5861] ? __pfx_do_new_mount+0x10/0x10
[ 70.600701][ T5861] __se_sys_mount+0x2d6/0x3c0
[ 70.600710][ T5861] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 70.600722][ T5861] ? __pfx___se_sys_mount+0x10/0x10
[ 70.600731][ T5861] ? do_syscall_64+0x100/0x230
[ 70.600743][ T5861] ? __x64_sys_mount+0x20/0xc0
[ 70.600751][ T5861] do_syscall_64+0xf3/0x230
[ 70.600761][ T5861] ? clear_bhb_loop+0x35/0x90
[ 70.600774][ T5861] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 70.600789][ T5861] RIP: 0033:0x7f63be77f79a
[ 70.600800][ T5861] 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
[ 70.600808][ T5861] RSP: 002b:00007ffeb4ae6628 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 70.600818][ T5861] RAX: ffffffffffffffda RBX: 00007f63be7f0659 RCX: 00007f63be77f79a
[ 70.600825][ T5861] RDX: 00007f63be7fba5f RSI: 00007f63be7f0659 RDI: 00007f63be7fba5f
[ 70.600831][ T5861] RBP: 00007f63be7f0868 R08: 0000000000000000 R09: 00000000000001ff
[ 70.600838][ T5861] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f63be7db040
[ 70.600843][ T5861] R13: 00007f63be7db020 R14: 0000000000000009 R15: 0000000000000000
[ 70.600852][ T5861]
[ 70.600856][ T5861]
[ 70.601031][ T5861] Allocated by task 5842:
[ 70.601041][ T5861] kasan_save_track+0x3f/0x80
[ 70.601058][ T5861] __kasan_kmalloc+0x98/0xb0
[ 70.601075][ T5861] __kmalloc_cache_noprof+0x243/0x390
[ 70.601089][ T5861] binderfs_binder_device_create+0x16c/0x9c0
[ 70.601103][ T5861] binderfs_fill_super+0x944/0xd90
[ 70.601117][ T5861] get_tree_nodev+0xb7/0x140
[ 70.601132][ T5861] vfs_get_tree+0x90/0x2b0
[ 70.601148][ T5861] do_new_mount+0x2be/0xb40
[ 70.601174][ T5861] __se_sys_mount+0x2d6/0x3c0
[ 70.601187][ T5861] do_syscall_64+0xf3/0x230
[ 70.601201][ T5861] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 70.601218][ T5861]
[ 70.601225][ T5861] Freed by task 5842:
[ 70.601235][ T5861] kasan_save_track+0x3f/0x80
[ 70.601251][ T5861] kasan_save_free_info+0x40/0x50
[ 70.601266][ T5861] __kasan_slab_free+0x59/0x70
[ 70.601282][ T5861] kfree+0x196/0x430
[ 70.601294][ T5861] evict+0x4e8/0x9a0
[ 70.601310][ T5861] __dentry_kill+0x20d/0x630
[ 70.601324][ T5861] shrink_kill+0xa9/0x2c0
[ 70.601337][ T5861] shrink_dentry_list+0x2c0/0x5b0
[ 70.601351][ T5861] shrink_dcache_parent+0xcb/0x3b0
[ 70.601365][ T5861] do_one_tree+0x23/0xe0
[ 70.601379][ T5861] shrink_dcache_for_umount+0xb4/0x180
[ 70.601394][ T5861] generic_shutdown_super+0x6a/0x2d0
[ 70.601409][ T5861] kill_litter_super+0x76/0xb0
[ 70.601424][ T5861] binderfs_kill_super+0x44/0x90
[ 70.601437][ T5861] deactivate_locked_super+0xc4/0x130
[ 70.601451][ T5861] cleanup_mnt+0x41f/0x4b0
[ 70.601466][ T5861] task_work_run+0x24f/0x310
[ 70.601484][ T5861] do_exit+0xa2a/0x28e0
[ 70.601500][ T5861] do_group_exit+0x207/0x2c0
[ 70.601518][ T5861] get_signal+0x16b2/0x1750
[ 70.601532][ T5861] arch_do_signal_or_restart+0x96/0x860
[ 70.601547][ T5861] syscall_exit_to_user_mode+0xce/0x340
[ 70.601562][ T5861] do_syscall_64+0x100/0x230
[ 70.601577][ T5861] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 70.601593][ T5861]
[ 70.601600][ T5861] The buggy address belongs to the object at ffff88807ed59000
[ 70.601600][ T5861] which belongs to the cache kmalloc-512 of size 512
[ 70.601613][ T5861] The buggy address is located 8 bytes inside of
[ 70.601613][ T5861] freed 512-byte region [ffff88807ed59000, ffff88807ed59200)
[ 70.601628][ T5861]
[ 70.601636][ T5861] The buggy address belongs to the physical page:
[ 70.601646][ T5861] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7ed58
[ 70.601665][ T5861] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 70.601678][ T5861] flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
[ 70.601695][ T5861] page_type: f5(slab)
[ 70.601709][ T5861] raw: 00fff00000000040 ffff88801ac41c80 dead000000000122 0000000000000000
[ 70.601722][ T5861] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 70.601737][ T5861] head: 00fff00000000040 ffff88801ac41c80 dead000000000122 0000000000000000
[ 70.601751][ T5861] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 70.601764][ T5861] head: 00fff00000000002 ffffea0001fb5601 ffffffffffffffff 0000000000000000
[ 70.601776][ T5861] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[ 70.601786][ T5861] page dumped because: kasan: bad access detected
[ 70.601799][ T5861] page_owner tracks the page as allocated
[ 70.601809][ T5861] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5842, tgid 5842 (syz-executor), ts 70342129737, free_ts 70334929140
[ 70.601834][ T5861] post_alloc_hook+0x1f4/0x240
[ 70.601849][ T5861] get_page_from_freelist+0x365c/0x37a0
[ 70.601866][ T5861] __alloc_frozen_pages_noprof+0x292/0x710
[ 70.601882][ T5861] alloc_pages_mpol+0x311/0x660
[ 70.601901][ T5861] allocate_slab+0x8f/0x3a0
[ 70.601916][ T5861] ___slab_alloc+0xc27/0x14a0
[ 70.601931][ T5861] __slab_alloc+0x58/0xa0
[ 70.601945][ T5861] __kmalloc_noprof+0x2e6/0x4c0
[ 70.601958][ T5861] tomoyo_init_log+0x1b3d/0x2050
[ 70.601975][ T5861] tomoyo_supervisor+0x3a4/0x1770
[ 70.601991][ T5861] tomoyo_path_number_perm+0x5d3/0x860
[ 70.602006][ T5861] tomoyo_path_mkdir+0xe7/0x130
[ 70.602023][ T5861] security_path_mkdir+0x171/0x370
[ 70.602040][ T5861] do_mkdirat+0x1c4/0x3a0
[ 70.602056][ T5861] __x64_sys_mkdirat+0x87/0xa0
[ 70.602071][ T5861] do_syscall_64+0xf3/0x230
[ 70.602086][ T5861] page last free pid 5842 tgid 5842 stack trace:
[ 70.602096][ T5861] free_frozen_pages+0xe0d/0x10e0
[ 70.602111][ T5861] __slab_free+0x2c2/0x380
[ 70.602126][ T5861] qlist_free_all+0x9a/0x140
[ 70.602141][ T5861] kasan_quarantine_reduce+0x14f/0x170
[ 70.602157][ T5861] __kasan_slab_alloc+0x23/0x80
[ 70.602180][ T5861] __kmalloc_noprof+0x236/0x4c0
[ 70.602196][ T5861] tomoyo_supervisor+0xe6c/0x1770
[ 70.602212][ T5861] tomoyo_mount_permission+0x795/0xb80
[ 70.602228][ T5861] security_sb_mount+0xe0/0x2f0
[ 70.602244][ T5861] path_mount+0xb9/0xfa0
[ 70.602261][ T5861] __se_sys_mount+0x2d6/0x3c0
[ 70.602273][ T5861] do_syscall_64+0xf3/0x230
[ 70.602287][ T5861] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 70.602304][ T5861]
[ 70.602311][ T5861] Memory state around the buggy address:
[ 70.602323][ T5861] ffff88807ed58f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 70.602335][ T5861] ffff88807ed58f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 70.602346][ T5861] >ffff88807ed59000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 70.602356][ T5861] ^
[ 70.602366][ T5861] ffff88807ed59080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 70.602377][ T5861] ffff88807ed59100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 70.602387][ T5861] ==================================================================
[ 70.602423][ T5861] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 71.451887][ T5861] CPU: 0 UID: 0 PID: 5861 Comm: syz-executor Not tainted 6.13.0-rc7-next-20250117-syzkaller-g0907e7fb3575 #0
[ 71.463435][ T5861] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 71.473558][ T5861] Call Trace:
[ 71.476830][ T5861]
[ 71.479754][ T5861] dump_stack_lvl+0x241/0x360
[ 71.484416][ T5861] ? __pfx_dump_stack_lvl+0x10/0x10
[ 71.489595][ T5861] ? __pfx__printk+0x10/0x10
[ 71.494165][ T5861] ? lock_release+0xbf/0xa30
[ 71.498737][ T5861] ? vscnprintf+0x5d/0x90
[ 71.503149][ T5861] panic+0x349/0x880
[ 71.507145][ T5861] ? check_panic_on_warn+0x21/0xb0
[ 71.512292][ T5861] ? __pfx_panic+0x10/0x10
[ 71.516726][ T5861] ? mark_lock+0x9a/0x360
[ 71.521341][ T5861] ? _raw_spin_unlock_irqrestore+0xd8/0x140
[ 71.527258][ T5861] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 71.533163][ T5861] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[ 71.539513][ T5861] ? print_report+0x502/0x550
[ 71.544264][ T5861] check_panic_on_warn+0x86/0xb0
[ 71.549260][ T5861] ? binder_add_device+0x5f/0xa0
[ 71.554206][ T5861] end_report+0x77/0x160
[ 71.558444][ T5861] kasan_report+0x154/0x180
[ 71.563066][ T5861] ? binder_add_device+0x5f/0xa0
[ 71.568074][ T5861] binder_add_device+0x5f/0xa0
[ 71.572900][ T5861] binderfs_binder_device_create+0x7bf/0x9c0
[ 71.578883][ T5861] binderfs_fill_super+0x944/0xd90
[ 71.583992][ T5861] ? __pfx_binderfs_fill_super+0x10/0x10
[ 71.589723][ T5861] ? shrinker_register+0x160/0x230
[ 71.594865][ T5861] ? sget_fc+0x909/0x9c0
[ 71.599104][ T5861] ? __pfx_set_anon_super_fc+0x10/0x10
[ 71.604573][ T5861] ? __pfx_binderfs_fill_super+0x10/0x10
[ 71.610283][ T5861] get_tree_nodev+0xb7/0x140
[ 71.614869][ T5861] vfs_get_tree+0x90/0x2b0
[ 71.619359][ T5861] do_new_mount+0x2be/0xb40
[ 71.623874][ T5861] ? __pfx_do_new_mount+0x10/0x10
[ 71.628888][ T5861] __se_sys_mount+0x2d6/0x3c0
[ 71.633645][ T5861] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 71.639625][ T5861] ? __pfx___se_sys_mount+0x10/0x10
[ 71.644903][ T5861] ? do_syscall_64+0x100/0x230
[ 71.649648][ T5861] ? __x64_sys_mount+0x20/0xc0
[ 71.654405][ T5861] do_syscall_64+0xf3/0x230
[ 71.658992][ T5861] ? clear_bhb_loop+0x35/0x90
[ 71.663679][ T5861] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 71.669585][ T5861] RIP: 0033:0x7f63be77f79a
[ 71.674068][ T5861] 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
[ 71.693847][ T5861] RSP: 002b:00007ffeb4ae6628 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 71.702260][ T5861] RAX: ffffffffffffffda RBX: 00007f63be7f0659 RCX: 00007f63be77f79a
[ 71.710238][ T5861] RDX: 00007f63be7fba5f RSI: 00007f63be7f0659 RDI: 00007f63be7fba5f
[ 71.718271][ T5861] RBP: 00007f63be7f0868 R08: 0000000000000000 R09: 00000000000001ff
[ 71.726312][ T5861] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f63be7db040
[ 71.734261][ T5861] R13: 00007f63be7db020 R14: 0000000000000009 R15: 0000000000000000
[ 71.742328][ T5861]
[ 71.745787][ T5861] Kernel Offset: disabled
[ 71.750209][ T5861] 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-build1792374614=/tmp/go-build -gno-record-gcc-switches'
git status (err=)
HEAD detached at cd6fc0a301
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=cd6fc0a3018e5d793bdcca6530622493f5e88307 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20241018-123137'" "-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=\"cd6fc0a3018e5d793bdcca6530622493f5e88307\"
/usr/bin/ld: /tmp/ccsXJpnq.o: in function `test_cover_filter()':
executor.cc:(.text+0x1424b): warning: the use of `tempnam' is dangerous, better use `mkstemp'
/usr/bin/ld: /tmp/ccsXJpnq.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