KASAN: slab-use-after-free Write in binder_add_device
veth0_vlan: entered promiscuous mode
veth1_macvtap: entered promiscuous mode
==================================================================
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 ffff888105714e08 by task syz-executor/326
CPU: 0 UID: 0 PID: 326 Comm: syz-executor Not tainted 6.14.0-rc2-syzkaller #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+0x184/0x200 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:378 [inline]
print_report+0x163/0x550 mm/kasan/report.c:489
kasan_report+0x15f/0x190 mm/kasan/report.c:602
__asan_report_store8_noabort+0x17/0x20 mm/kasan/report_generic.c:386
hlist_add_head include/linux/list.h:1026 [inline]
binder_add_device+0x5f/0xa0 drivers/android/binder.c:6932
binderfs_binder_device_create+0x841/0xaa0 drivers/android/binderfs.c:210
binderfs_fill_super+0x8fb/0xdd0 drivers/android/binderfs.c:729
vfs_get_super fs/super.c:1280 [inline]
get_tree_nodev+0xb9/0x160 fs/super.c:1299
binderfs_fs_context_get_tree+0x1c/0x30 drivers/android/binderfs.c:749
vfs_get_tree+0x8c/0x2c0 fs/super.c:1814
do_new_mount+0x2ba/0xb40 fs/namespace.c:3560
path_mount+0x67c/0x1000 fs/namespace.c:3887
do_mount fs/namespace.c:3900 [inline]
__do_sys_mount fs/namespace.c:4111 [inline]
__se_sys_mount+0x2c1/0x3b0 fs/namespace.c:4088
__x64_sys_mount+0xbf/0xe0 fs/namespace.c:4088
x64_sys_call+0x2c9e/0x2df0 arch/x86/include/generated/asm/syscalls_64.h:166
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x50/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fb9f678e58a
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:00007fffba3099e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fb9f680e663 RCX: 00007fb9f678e58a
RDX: 00007fb9f681dda7 RSI: 00007fb9f680e663 RDI: 00007fb9f681dda7
RBP: 00007fb9f680e8ac R08: 0000000000000000 R09: 00007fffba309a90
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb9f67eb1a8
R13: 00007fb9f67eb180 R14: 0000000000000009 R15: 0000000000000000
Allocated by task 319:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3b/0x70 mm/kasan/common.c:68
kasan_save_alloc_info+0x38/0x50 mm/kasan/generic.c:562
poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
__kasan_kmalloc+0x99/0xb0 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__kmalloc_cache_noprof+0x15f/0x2d0 mm/slub.c:4325
kmalloc_noprof include/linux/slab.h:901 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
binderfs_binder_device_create+0x159/0xaa0 drivers/android/binderfs.c:147
binderfs_fill_super+0x8fb/0xdd0 drivers/android/binderfs.c:729
vfs_get_super fs/super.c:1280 [inline]
get_tree_nodev+0xb9/0x160 fs/super.c:1299
binderfs_fs_context_get_tree+0x1c/0x30 drivers/android/binderfs.c:749
vfs_get_tree+0x8c/0x2c0 fs/super.c:1814
do_new_mount+0x2ba/0xb40 fs/namespace.c:3560
path_mount+0x67c/0x1000 fs/namespace.c:3887
do_mount fs/namespace.c:3900 [inline]
__do_sys_mount fs/namespace.c:4111 [inline]
__se_sys_mount+0x2c1/0x3b0 fs/namespace.c:4088
__x64_sys_mount+0xbf/0xe0 fs/namespace.c:4088
x64_sys_call+0x2c9e/0x2df0 arch/x86/include/generated/asm/syscalls_64.h:166
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x50/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Freed by task 319:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3b/0x70 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+0x53/0x70 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+0x13b/0x350 mm/slub.c:4757
binderfs_evict_inode+0x187/0x220 drivers/android/binderfs.c:278
evict+0x4a7/0x930 fs/inode.c:796
iput_final fs/inode.c:1946 [inline]
iput+0x5ff/0x920 fs/inode.c:1972
dentry_unlink_inode+0x389/0x460 fs/dcache.c:440
__dentry_kill+0x207/0x640 fs/dcache.c:643
shrink_kill fs/dcache.c:1088 [inline]
shrink_dentry_list+0x315/0x510 fs/dcache.c:1115
shrink_dcache_parent+0xce/0x340
do_one_tree+0x27/0xf0 fs/dcache.c:1578
shrink_dcache_for_umount+0xa3/0x140 fs/dcache.c:1595
generic_shutdown_super+0x69/0x300 fs/super.c:620
kill_anon_super+0x46/0x1e0 fs/super.c:1237
kill_litter_super+0x56/0x60 fs/super.c:1247
binderfs_kill_super+0x41/0x60 drivers/android/binderfs.c:791
deactivate_locked_super+0xd8/0x290 fs/super.c:473
deactivate_super+0xc6/0xf0 fs/super.c:506
cleanup_mnt+0x42d/0x4d0 fs/namespace.c:1413
__cleanup_mnt+0x19/0x20 fs/namespace.c:1420
task_work_run+0x252/0x2e0 kernel/task_work.c:227
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0xb39/0x2ab0 kernel/exit.c:938
do_group_exit+0x21b/0x2d0 kernel/exit.c:1087
get_signal+0x1553/0x1690 kernel/signal.c:3036
arch_do_signal_or_restart+0x92/0x7d0 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+0x5f/0x110 kernel/entry/common.c:218
do_syscall_64+0x5c/0x110 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x76/0x7e
The buggy address belongs to the object at ffff888105714e00
which belongs to the cache kmalloc-192 of size 192
The buggy address is located 8 bytes inside of
freed 192-byte region [ffff888105714e00, ffff888105714ec0)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105714
flags: 0x4000000000000000(zone=1)
page_type: f5(slab)
raw: 4000000000000000 ffff8881000413c0 ffffea00040ad280 0000000000000002
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 1, tgid 1 (swapper/0), ts 3605953348, free_ts 0
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1db/0x200 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x47ee/0x4880 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x3c3/0x7d0 mm/page_alloc.c:4739
allocate_slab+0x76/0x420 mm/slub.c:2587
new_slab mm/slub.c:2640 [inline]
___slab_alloc+0x767/0xc00 mm/slub.c:3826
__slab_alloc+0x5d/0xb0 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_node_track_caller_noprof+0x210/0x3f0 mm/slub.c:4313
__do_krealloc mm/slub.c:4820 [inline]
krealloc_noprof+0x104/0x2d0 mm/slub.c:4873
add_sysfs_param+0xcd/0x7e0 kernel/params.c:654
kernel_add_sysfs_param+0xb2/0x140 kernel/params.c:817
param_sysfs_builtin+0x1d3/0x290 kernel/params.c:856
param_sysfs_builtin_init+0x32/0x40 kernel/params.c:990
do_one_initcall+0x18a/0x730 init/main.c:1257
do_initcall_level+0x186/0x310 init/main.c:1319
do_initcalls+0x76/0xe0 init/main.c:1335
do_basic_setup+0x87/0xa0 init/main.c:1354
page_owner free stack trace missing
Memory state around the buggy address:
ffff888105714d00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888105714d80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff888105714e00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888105714e80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
ffff888105714f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
syz-executor (326) used greatest stack depth: 20856 bytes left
Warning: Permanently added '10.128.0.92' (ED25519) to the list of known hosts.
2025/02/10 10:34:44 ignoring optional flag "sandboxArg"="0"
2025/02/10 10:34:45 parsed 1 programs
[ 34.823361][ T30] audit: type=1400 audit(1739183685.672:66): avc: denied { node_bind } for pid=302 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1
[ 36.016409][ T30] audit: type=1400 audit(1739183686.862:67): avc: denied { mounton } for pid=311 comm="syz-executor" path="/syzcgroup/unified" dev="sda1" ino=1926 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:root_t tclass=dir permissive=1
[ 36.017713][ T311] cgroup: Unknown subsys name 'net'
[ 36.038904][ T30] audit: type=1400 audit(1739183686.862:68): avc: denied { mount } for pid=311 comm="syz-executor" name="/" dev="cgroup2" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1
[ 36.066532][ T30] audit: type=1400 audit(1739183686.912:69): avc: denied { unmount } for pid=311 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1
[ 36.066684][ T311] cgroup: Unknown subsys name 'devices'
[ 36.204300][ T311] cgroup: Unknown subsys name 'cpuset'
[ 36.210253][ T311] cgroup: Unknown subsys name 'hugetlb'
[ 36.215844][ T311] cgroup: Unknown subsys name 'rlimit'
[ 36.221255][ T311] cgroup: Unknown subsys name 'memory'
[ 36.316286][ T30] audit: type=1400 audit(1739183687.162:70): avc: denied { setattr } for pid=311 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=254 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1
[ 36.339259][ T30] audit: type=1400 audit(1739183687.162:71): avc: denied { create } for pid=311 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
[ 36.350528][ T315] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped).
[ 36.359616][ T30] audit: type=1400 audit(1739183687.162:72): avc: denied { write } for pid=311 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
[ 36.387892][ T30] audit: type=1400 audit(1739183687.162:73): avc: denied { read } for pid=311 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
[ 36.407949][ T30] audit: type=1400 audit(1739183687.162:74): avc: denied { module_request } for pid=311 comm="syz-executor" kmod="netdev-wpan0" scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:kernel_t tclass=system permissive=1
[ 36.429474][ T30] audit: type=1400 audit(1739183687.162:75): avc: denied { mounton } for pid=311 comm="syz-executor" path="/proc/sys/fs/binfmt_misc" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=dir permissive=1
[ 36.433255][ T311] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 37.214960][ T319] request_module fs-gadgetfs succeeded, but still no fs?
[ 37.358543][ T326] bridge0: port 1(bridge_slave_0) entered blocking state
[ 37.365528][ T326] bridge0: port 1(bridge_slave_0) entered disabled state
[ 37.372392][ T326] bridge_slave_0: entered allmulticast mode
[ 37.378743][ T326] bridge_slave_0: entered promiscuous mode
[ 37.385005][ T326] bridge0: port 2(bridge_slave_1) entered blocking state
[ 37.391838][ T326] bridge0: port 2(bridge_slave_1) entered disabled state
[ 37.399497][ T326] bridge_slave_1: entered allmulticast mode
[ 37.405831][ T326] bridge_slave_1: entered promiscuous mode
[ 37.464104][ T326] bridge0: port 2(bridge_slave_1) entered blocking state
[ 37.471044][ T326] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 37.478198][ T326] bridge0: port 1(bridge_slave_0) entered blocking state
[ 37.485235][ T326] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 37.509117][ T44] bridge0: port 1(bridge_slave_0) entered disabled state
[ 37.516325][ T44] bridge0: port 2(bridge_slave_1) entered disabled state
[ 37.526336][ T11] bridge0: port 1(bridge_slave_0) entered blocking state
[ 37.533216][ T11] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 37.542109][ T11] bridge0: port 2(bridge_slave_1) entered blocking state
[ 37.549063][ T11] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 37.574873][ T326] veth0_vlan: entered promiscuous mode
[ 37.586230][ T326] veth1_macvtap: entered promiscuous mode
[ 37.607288][ T326] ==================================================================
[ 37.615181][ T326] BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0
[ 37.622721][ T326] Write of size 8 at addr ffff888105714e08 by task syz-executor/326
[ 37.630633][ T326]
[ 37.632813][ T326] CPU: 0 UID: 0 PID: 326 Comm: syz-executor Not tainted 6.14.0-rc2-syzkaller #0
[ 37.632829][ T326] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 37.632842][ T326] Call Trace:
[ 37.632851][ T326]
[ 37.632857][ T326] dump_stack_lvl+0x184/0x200
[ 37.632874][ T326] ? __pfx_dump_stack_lvl+0x10/0x10
[ 37.632887][ T326] ? vprintk+0x1d/0x30
[ 37.632903][ T326] ? _printk+0xd1/0x120
[ 37.632920][ T326] print_report+0x163/0x550
[ 37.632940][ T326] ? __virt_addr_valid+0x2a4/0x380
[ 37.632968][ T326] ? kasan_complete_mode_report_info+0x71/0x210
[ 37.632993][ T326] kasan_report+0x15f/0x190
[ 37.633006][ T326] ? binder_add_device+0x5f/0xa0
[ 37.633025][ T326] ? binder_add_device+0x5f/0xa0
[ 37.633043][ T326] __asan_report_store8_noabort+0x17/0x20
[ 37.633063][ T326] binder_add_device+0x5f/0xa0
[ 37.633081][ T326] binderfs_binder_device_create+0x841/0xaa0
[ 37.633102][ T326] binderfs_fill_super+0x8fb/0xdd0
[ 37.633127][ T326] ? __pfx_binderfs_fill_super+0x10/0x10
[ 37.633149][ T326] ? shrinker_register+0x166/0x220
[ 37.633164][ T326] ? sget_fc+0x95b/0xa50
[ 37.633183][ T326] ? __pfx_set_anon_super_fc+0x10/0x10
[ 37.633207][ T326] get_tree_nodev+0xb9/0x160
[ 37.633227][ T326] ? __pfx_binderfs_fill_super+0x10/0x10
[ 37.633245][ T326] binderfs_fs_context_get_tree+0x1c/0x30
[ 37.633263][ T326] vfs_get_tree+0x8c/0x2c0
[ 37.633276][ T326] do_new_mount+0x2ba/0xb40
[ 37.633291][ T326] ? __pfx_do_new_mount+0x10/0x10
[ 37.633305][ T326] ? security_capable+0x7c/0x90
[ 37.633320][ T326] ? ns_capable+0x8a/0xf0
[ 37.633341][ T326] path_mount+0x67c/0x1000
[ 37.633356][ T326] __se_sys_mount+0x2c1/0x3b0
[ 37.633372][ T326] ? __pfx___se_sys_mount+0x10/0x10
[ 37.633389][ T326] __x64_sys_mount+0xbf/0xe0
[ 37.633404][ T326] x64_sys_call+0x2c9e/0x2df0
[ 37.633420][ T326] do_syscall_64+0x50/0x110
[ 37.633433][ T326] ? clear_bhb_loop+0x35/0x90
[ 37.633452][ T326] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 37.633469][ T326] RIP: 0033:0x7fb9f678e58a
[ 37.633485][ T326] 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
[ 37.633497][ T326] RSP: 002b:00007fffba3099e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 37.633518][ T326] RAX: ffffffffffffffda RBX: 00007fb9f680e663 RCX: 00007fb9f678e58a
[ 37.633529][ T326] RDX: 00007fb9f681dda7 RSI: 00007fb9f680e663 RDI: 00007fb9f681dda7
[ 37.633539][ T326] RBP: 00007fb9f680e8ac R08: 0000000000000000 R09: 00007fffba309a90
[ 37.633549][ T326] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb9f67eb1a8
[ 37.633558][ T326] R13: 00007fb9f67eb180 R14: 0000000000000009 R15: 0000000000000000
[ 37.633570][ T326]
[ 37.633578][ T326]
[ 37.898280][ T326] Allocated by task 319:
[ 37.902357][ T326] kasan_save_track+0x3b/0x70
[ 37.906886][ T326] kasan_save_alloc_info+0x38/0x50
[ 37.911817][ T326] __kasan_kmalloc+0x99/0xb0
[ 37.916246][ T326] __kmalloc_cache_noprof+0x15f/0x2d0
[ 37.921541][ T326] binderfs_binder_device_create+0x159/0xaa0
[ 37.927351][ T326] binderfs_fill_super+0x8fb/0xdd0
[ 37.932297][ T326] get_tree_nodev+0xb9/0x160
[ 37.936750][ T326] binderfs_fs_context_get_tree+0x1c/0x30
[ 37.942279][ T326] vfs_get_tree+0x8c/0x2c0
[ 37.946541][ T326] do_new_mount+0x2ba/0xb40
[ 37.950969][ T326] path_mount+0x67c/0x1000
[ 37.955212][ T326] __se_sys_mount+0x2c1/0x3b0
[ 37.959723][ T326] __x64_sys_mount+0xbf/0xe0
[ 37.964154][ T326] x64_sys_call+0x2c9e/0x2df0
[ 37.968726][ T326] do_syscall_64+0x50/0x110
[ 37.973011][ T326] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 37.978822][ T326]
[ 37.980990][ T326] Freed by task 319:
[ 37.984723][ T326] kasan_save_track+0x3b/0x70
[ 37.989233][ T326] kasan_save_free_info+0x40/0x50
[ 37.994100][ T326] __kasan_slab_free+0x53/0x70
[ 37.998711][ T326] kfree+0x13b/0x350
[ 38.002427][ T326] binderfs_evict_inode+0x187/0x220
[ 38.007461][ T326] evict+0x4a7/0x930
[ 38.011206][ T326] iput+0x5ff/0x920
[ 38.014843][ T326] dentry_unlink_inode+0x389/0x460
[ 38.019788][ T326] __dentry_kill+0x207/0x640
[ 38.024213][ T326] shrink_dentry_list+0x315/0x510
[ 38.029084][ T326] shrink_dcache_parent+0xce/0x340
[ 38.034018][ T326] do_one_tree+0x27/0xf0
[ 38.038099][ T326] shrink_dcache_for_umount+0xa3/0x140
[ 38.043393][ T326] generic_shutdown_super+0x69/0x300
[ 38.048513][ T326] kill_anon_super+0x46/0x1e0
[ 38.053025][ T326] kill_litter_super+0x56/0x60
[ 38.057627][ T326] binderfs_kill_super+0x41/0x60
[ 38.062425][ T326] deactivate_locked_super+0xd8/0x290
[ 38.067618][ T326] deactivate_super+0xc6/0xf0
[ 38.072123][ T326] cleanup_mnt+0x42d/0x4d0
[ 38.076375][ T326] __cleanup_mnt+0x19/0x20
[ 38.080713][ T326] task_work_run+0x252/0x2e0
[ 38.085139][ T326] do_exit+0xb39/0x2ab0
[ 38.089140][ T326] do_group_exit+0x21b/0x2d0
[ 38.093558][ T326] get_signal+0x1553/0x1690
[ 38.097899][ T326] arch_do_signal_or_restart+0x92/0x7d0
[ 38.103366][ T326] syscall_exit_to_user_mode+0x5f/0x110
[ 38.108748][ T326] do_syscall_64+0x5c/0x110
[ 38.113100][ T326] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 38.118817][ T326]
[ 38.120985][ T326] The buggy address belongs to the object at ffff888105714e00
[ 38.120985][ T326] which belongs to the cache kmalloc-192 of size 192
[ 38.135091][ T326] The buggy address is located 8 bytes inside of
[ 38.135091][ T326] freed 192-byte region [ffff888105714e00, ffff888105714ec0)
[ 38.148579][ T326]
[ 38.150713][ T326] The buggy address belongs to the physical page:
[ 38.156958][ T326] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105714
[ 38.165640][ T326] flags: 0x4000000000000000(zone=1)
[ 38.170670][ T326] page_type: f5(slab)
[ 38.174506][ T326] raw: 4000000000000000 ffff8881000413c0 ffffea00040ad280 0000000000000002
[ 38.182920][ T326] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 38.191327][ T326] page dumped because: kasan: bad access detected
[ 38.197603][ T326] page_owner tracks the page as allocated
[ 38.203136][ T326] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 1, tgid 1 (swapper/0), ts 3605953348, free_ts 0
[ 38.220501][ T326] post_alloc_hook+0x1db/0x200
[ 38.225176][ T326] get_page_from_freelist+0x47ee/0x4880
[ 38.230565][ T326] __alloc_frozen_pages_noprof+0x3c3/0x7d0
[ 38.236200][ T326] allocate_slab+0x76/0x420
[ 38.240537][ T326] ___slab_alloc+0x767/0xc00
[ 38.245052][ T326] __slab_alloc+0x5d/0xb0
[ 38.249221][ T326] __kmalloc_node_track_caller_noprof+0x210/0x3f0
[ 38.255560][ T326] krealloc_noprof+0x104/0x2d0
[ 38.260258][ T326] add_sysfs_param+0xcd/0x7e0
[ 38.264774][ T326] kernel_add_sysfs_param+0xb2/0x140
[ 38.269900][ T326] param_sysfs_builtin+0x1d3/0x290
[ 38.274853][ T326] param_sysfs_builtin_init+0x32/0x40
[ 38.280049][ T326] do_one_initcall+0x18a/0x730
[ 38.284661][ T326] do_initcall_level+0x186/0x310
[ 38.289422][ T326] do_initcalls+0x76/0xe0
[ 38.293589][ T326] do_basic_setup+0x87/0xa0
[ 38.297962][ T326] page_owner free stack trace missing
[ 38.303137][ T326]
[ 38.305305][ T326] Memory state around the buggy address:
[ 38.310789][ T326] ffff888105714d00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 38.318674][ T326] ffff888105714d80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[ 38.326582][ T326] >ffff888105714e00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 38.334466][ T326] ^
[ 38.338634][ T326] ffff888105714e80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[ 38.346537][ T326] ffff888105714f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 38.354435][ T326] ==================================================================
[ 38.365144][ T326] Disabling lock debugging due to kernel taint
[ 38.391204][ T44] bridge_slave_1: left allmulticast mode
[ 38.391465][ T326] syz-executor (326) used greatest stack depth: 20856 bytes left
[ 38.403015][ T44] bridge_slave_1: left promiscuous mode
[ 38.409749][ T44] bridge0: port 2(bridge_slave_1) entered disabled state
[ 38.417721][ T44] bridge_slave_0: left allmulticast mode
[ 38.424661][ T44] bridge_slave_0: left promiscuous mode
[ 38.430109][ T44] bridge0: port 1(bridge_slave_0) entered disabled state
[ 38.576775][ T44] veth1_macvtap: left promiscuous mode
[ 38.582411][ T44] veth0_vlan: left promiscuous mode
2025/02/10 10:34:50 executed programs: 0
[ 39.531361][ T376] bridge0: port 1(bridge_slave_0) entered blocking state
[ 39.538422][ T376] bridge0: port 1(bridge_slave_0) entered disabled state
[ 39.545380][ T376] bridge_slave_0: entered allmulticast mode
[ 39.551513][ T376] bridge_slave_0: entered promiscuous mode
[ 39.558520][ T376] bridge0: port 2(bridge_slave_1) entered blocking state
[ 39.565598][ T376] bridge0: port 2(bridge_slave_1) entered disabled state
[ 39.572341][ T376] bridge_slave_1: entered allmulticast mode
[ 39.578537][ T376] bridge_slave_1: entered promiscuous mode
[ 39.628865][ T376] bridge0: port 2(bridge_slave_1) entered blocking state
[ 39.635737][ T376] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 39.642828][ T376] bridge0: port 1(bridge_slave_0) entered blocking state
[ 39.649634][ T376] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 39.671646][ T11] bridge0: port 1(bridge_slave_0) entered disabled state
[ 39.679703][ T11] bridge0: port 2(bridge_slave_1) entered disabled state
[ 39.688909][ T40] bridge0: port 1(bridge_slave_0) entered blocking state
[ 39.695877][ T40] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 39.704680][ T11] bridge0: port 2(bridge_slave_1) entered blocking state
[ 39.711542][ T11] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 39.737450][ T376] veth0_vlan: entered promiscuous mode
[ 39.749179][ T376] veth1_macvtap: entered promiscuous mode
[ 39.806963][ T11] bridge_slave_1: left allmulticast mode
[ 39.812448][ T11] bridge_slave_1: left promiscuous mode
[ 39.813077][ T376] syz-executor (376) used greatest stack depth: 20784 bytes left
[ 39.818160][ T11] bridge0: port 2(bridge_slave_1) entered disabled state
[ 39.833240][ T11] bridge_slave_0: left allmulticast mode
[ 39.838709][ T11] bridge_slave_0: left promiscuous mode
[ 39.844477][ T11] bridge0: port 1(bridge_slave_0) entered disabled state
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='/syzkaller/jobs-2/linux/gopath/pkg/mod/golang.org/toolchain@v0.0.1-go1.23.6.linux-amd64'
GOSUMDB='sum.golang.org'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/syzkaller/jobs-2/linux/gopath/pkg/mod/golang.org/toolchain@v0.0.1-go1.23.6.linux-amd64/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.23.6'
GODEBUG=''
GOTELEMETRY='local'
GOTELEMETRYDIR='/syzkaller/.config/go/telemetry'
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-build660489947=/tmp/go-build -gno-record-gcc-switches'
git status (err=)
HEAD detached at ef44b750e8
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=ef44b750e8fab8d6d5cb84920680581b13e0d470 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20250207-152458'" -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 -DGOOS_linux=1 -DGOARCH_amd64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"ef44b750e8fab8d6d5cb84920680581b13e0d470\"
/usr/bin/ld: /tmp/cciEk8fi.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