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+0x63/0xa0 drivers/android/binder.c:6932
Write of size 8 at addr ffff888103e4a108 by task syz-executor/316
CPU: 0 UID: 0 PID: 316 Comm: syz-executor Not tainted 6.13.0-syzkaller-09760-g69e858e0b8b2 #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+0x188/0x200 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+0x14f/0x190 mm/kasan/report.c:602
__asan_report_store8_noabort+0x1b/0x30 mm/kasan/report_generic.c:386
hlist_add_head include/linux/list.h:1026 [inline]
binder_add_device+0x63/0xa0 drivers/android/binder.c:6932
binderfs_binder_device_create+0x7e7/0x9e0 drivers/android/binderfs.c:210
binderfs_fill_super+0x897/0xcb0 drivers/android/binderfs.c:729
vfs_get_super fs/super.c:1280 [inline]
get_tree_nodev+0xbd/0x160 fs/super.c:1299
binderfs_fs_context_get_tree+0x20/0x30 drivers/android/binderfs.c:749
vfs_get_tree+0x90/0x2c0 fs/super.c:1814
do_new_mount+0x2be/0xb40 fs/namespace.c:3560
path_mount+0x680/0x1000 fs/namespace.c:3887
do_mount fs/namespace.c:3900 [inline]
__do_sys_mount fs/namespace.c:4111 [inline]
__se_sys_mount+0x2c5/0x3b0 fs/namespace.c:4088
__x64_sys_mount+0xc3/0xe0 fs/namespace.c:4088
x64_sys_call+0x2ca2/0x2e00 arch/x86/include/generated/asm/syscalls_64.h:166
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x54/0xf0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fd9a658e54a
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:00007ffd9a6e6b18 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fd9a660e663 RCX: 00007fd9a658e54a
RDX: 00007fd9a661dda7 RSI: 00007fd9a660e663 RDI: 00007fd9a661dda7
RBP: 00007fd9a660e8ac R08: 0000000000000000 R09: 00000000000001ff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd9a65eb1a8
R13: 00007fd9a65eb180 R14: 0000000000000009 R15: 0000000000000000
Allocated by task 310:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_alloc_info+0x3c/0x50 mm/kasan/generic.c:562
poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
__kasan_kmalloc+0x9d/0xb0 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__kmalloc_cache_noprof+0x17c/0x300 mm/slub.c:4325
kmalloc_noprof include/linux/slab.h:901 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
binderfs_binder_device_create+0x15b/0x9e0 drivers/android/binderfs.c:147
binderfs_fill_super+0x897/0xcb0 drivers/android/binderfs.c:729
vfs_get_super fs/super.c:1280 [inline]
get_tree_nodev+0xbd/0x160 fs/super.c:1299
binderfs_fs_context_get_tree+0x20/0x30 drivers/android/binderfs.c:749
vfs_get_tree+0x90/0x2c0 fs/super.c:1814
do_new_mount+0x2be/0xb40 fs/namespace.c:3560
path_mount+0x680/0x1000 fs/namespace.c:3887
do_mount fs/namespace.c:3900 [inline]
__do_sys_mount fs/namespace.c:4111 [inline]
__se_sys_mount+0x2c5/0x3b0 fs/namespace.c:4088
__x64_sys_mount+0xc3/0xe0 fs/namespace.c:4088
x64_sys_call+0x2ca2/0x2e00 arch/x86/include/generated/asm/syscalls_64.h:166
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x54/0xf0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Freed by task 310:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x44/0x50 mm/kasan/generic.c:576
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x57/0x70 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+0x143/0x370 mm/slub.c:4757
binderfs_evict_inode+0x18b/0x230 drivers/android/binderfs.c:278
evict+0x4ab/0x940 fs/inode.c:796
iput_final fs/inode.c:1946 [inline]
iput+0x607/0x920 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+0x319/0x510 fs/dcache.c:1115
shrink_dcache_parent+0xd2/0x360
do_one_tree+0x27/0xf0 fs/dcache.c:1578
shrink_dcache_for_umount+0xa7/0x150 fs/dcache.c:1595
generic_shutdown_super+0x6d/0x300 fs/super.c:620
kill_anon_super+0x4a/0x1e0 fs/super.c:1237
kill_litter_super+0x5a/0x70 fs/super.c:1247
binderfs_kill_super+0x45/0x60 drivers/android/binderfs.c:791
deactivate_locked_super+0xdc/0x290 fs/super.c:473
deactivate_super+0xca/0x100 fs/super.c:506
cleanup_mnt+0x42d/0x4d0 fs/namespace.c:1413
__cleanup_mnt+0x1d/0x30 fs/namespace.c:1420
task_work_run+0x24f/0x300 kernel/task_work.c:227
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0xb3d/0x2ad0 kernel/exit.c:938
do_group_exit+0x21f/0x2e0 kernel/exit.c:1087
get_signal+0x1560/0x16b0 kernel/signal.c:3036
arch_do_signal_or_restart+0x96/0x790 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+0x63/0x110 kernel/entry/common.c:218
do_syscall_64+0x60/0xf0 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x76/0x7e
The buggy address belongs to the object at ffff888103e4a100
which belongs to the cache kmalloc-192 of size 192
The buggy address is located 8 bytes inside of
freed 192-byte region [ffff888103e4a100, ffff888103e4a1c0)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103e4a
flags: 0x4000000000000000(zone=1)
page_type: f5(slab)
raw: 4000000000000000 ffff8881000413c0 ffffea00042d98c0 dead000000000002
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 28, tgid 28 (kdevtmpfs), ts 1456480730, free_ts 0
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1eb/0x210 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x482b/0x48c0 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x3e8/0x890 mm/page_alloc.c:4739
allocate_slab+0x76/0x430 mm/slub.c:2587
new_slab mm/slub.c:2640 [inline]
___slab_alloc+0x7e0/0xcf0 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]
__kmalloc_cache_noprof+0x1b9/0x300 mm/slub.c:4320
kmalloc_noprof include/linux/slab.h:901 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
alloc_fs_context+0x65/0x840 fs/fs_context.c:285
fs_context_for_mount+0x28/0x40 fs/fs_context.c:332
do_new_mount+0x160/0xb40 fs/namespace.c:3539
path_mount+0x680/0x1000 fs/namespace.c:3887
init_mount+0xd4/0x130 fs/init.c:25
devtmpfs_setup+0x7b/0xe0 drivers/base/devtmpfs.c:419
devtmpfsd+0x19/0x60 drivers/base/devtmpfs.c:436
kthread+0x765/0x8d0 kernel/kthread.c:464
ret_from_fork+0x55/0x90 arch/x86/kernel/process.c:148
page_owner free stack trace missing
Memory state around the buggy address:
ffff888103e4a000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888103e4a080: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff888103e4a100: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888103e4a180: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
ffff888103e4a200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
Warning: Permanently added '10.128.1.61' (ED25519) to the list of known hosts.
2025/01/31 03:34:03 ignoring optional flag "sandboxArg"="0"
2025/01/31 03:34:03 parsed 1 programs
[ 31.270423][ T30] audit: type=1400 audit(1738294443.982:66): avc: denied { node_bind } for pid=295 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1
[ 32.477847][ T30] audit: type=1400 audit(1738294445.192:67): avc: denied { mounton } for pid=303 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
[ 32.479128][ T303] cgroup: Unknown subsys name 'net'
[ 32.500964][ T30] audit: type=1400 audit(1738294445.192:68): avc: denied { mount } for pid=303 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
[ 32.528017][ T30] audit: type=1400 audit(1738294445.222:69): avc: denied { unmount } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1
[ 32.528215][ T303] cgroup: Unknown subsys name 'devices'
[ 32.671902][ T303] cgroup: Unknown subsys name 'cpuset'
[ 32.677925][ T303] cgroup: Unknown subsys name 'hugetlb'
[ 32.683490][ T303] cgroup: Unknown subsys name 'rlimit'
[ 32.688900][ T303] cgroup: Unknown subsys name 'memory'
[ 32.784377][ T30] audit: type=1400 audit(1738294445.502:70): avc: denied { setattr } for pid=303 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=251 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1
[ 32.807616][ T30] audit: type=1400 audit(1738294445.502:71): avc: denied { create } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
[ 32.827773][ T30] audit: type=1400 audit(1738294445.502:72): avc: denied { write } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
[ 32.847896][ T30] audit: type=1400 audit(1738294445.502:73): avc: denied { read } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
[ 32.858125][ T308] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped).
[ 32.868025][ T30] audit: type=1400 audit(1738294445.502:74): avc: denied { module_request } for pid=303 comm="syz-executor" kmod="netdev-wpan0" scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:kernel_t tclass=system permissive=1
[ 32.898082][ T30] audit: type=1400 audit(1738294445.502:75): avc: denied { mounton } for pid=303 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
[ 32.927562][ T303] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 33.718415][ T310] request_module fs-gadgetfs succeeded, but still no fs?
[ 33.815082][ T316] ==================================================================
[ 33.822995][ T316] BUG: KASAN: slab-use-after-free in binder_add_device+0x63/0xa0
[ 33.830817][ T316] Write of size 8 at addr ffff888103e4a108 by task syz-executor/316
[ 33.838722][ T316]
[ 33.840889][ T316] CPU: 0 UID: 0 PID: 316 Comm: syz-executor Not tainted 6.13.0-syzkaller-09760-g69e858e0b8b2 #0
[ 33.840911][ T316] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 33.840924][ T316] Call Trace:
[ 33.840934][ T316]
[ 33.840942][ T316] dump_stack_lvl+0x188/0x200
[ 33.840966][ T316] ? __pfx_dump_stack_lvl+0x10/0x10
[ 33.840986][ T316] ? vprintk+0x21/0x30
[ 33.841002][ T316] ? _printk+0xd5/0x120
[ 33.841024][ T316] ? binder_add_device+0x63/0xa0
[ 33.841039][ T316] print_report+0x163/0x550
[ 33.841064][ T316] ? __virt_addr_valid+0x2a8/0x380
[ 33.841088][ T316] ? binder_add_device+0x63/0xa0
[ 33.841102][ T316] ? kasan_complete_mode_report_info+0x75/0x210
[ 33.841127][ T316] ? binder_add_device+0x63/0xa0
[ 33.841140][ T316] kasan_report+0x14f/0x190
[ 33.841158][ T316] ? binder_add_device+0x63/0xa0
[ 33.841174][ T316] __asan_report_store8_noabort+0x1b/0x30
[ 33.841189][ T316] binder_add_device+0x63/0xa0
[ 33.841202][ T316] binderfs_binder_device_create+0x7e7/0x9e0
[ 33.841228][ T316] binderfs_fill_super+0x897/0xcb0
[ 33.841253][ T316] ? __pfx_binderfs_fill_super+0x10/0x10
[ 33.841281][ T316] ? shrinker_register+0x16a/0x230
[ 33.841302][ T316] ? sget_fc+0x908/0x9c0
[ 33.841316][ T316] ? __pfx_set_anon_super_fc+0x10/0x10
[ 33.841334][ T316] get_tree_nodev+0xbd/0x160
[ 33.841350][ T316] ? __pfx_binderfs_fill_super+0x10/0x10
[ 33.841374][ T316] binderfs_fs_context_get_tree+0x20/0x30
[ 33.841397][ T316] vfs_get_tree+0x90/0x2c0
[ 33.841416][ T316] do_new_mount+0x2be/0xb40
[ 33.841434][ T316] ? __pfx_do_new_mount+0x10/0x10
[ 33.841451][ T316] ? security_capable+0x88/0xa0
[ 33.841473][ T316] ? ns_capable+0x8e/0xf0
[ 33.841487][ T316] path_mount+0x680/0x1000
[ 33.841505][ T316] __se_sys_mount+0x2c5/0x3b0
[ 33.841524][ T316] ? __pfx___se_sys_mount+0x10/0x10
[ 33.841544][ T316] __x64_sys_mount+0xc3/0xe0
[ 33.841563][ T316] x64_sys_call+0x2ca2/0x2e00
[ 33.841585][ T316] do_syscall_64+0x54/0xf0
[ 33.841605][ T316] ? clear_bhb_loop+0x35/0x90
[ 33.841624][ T316] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 33.841641][ T316] RIP: 0033:0x7fd9a658e54a
[ 33.841660][ T316] 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
[ 33.841673][ T316] RSP: 002b:00007ffd9a6e6b18 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 33.841692][ T316] RAX: ffffffffffffffda RBX: 00007fd9a660e663 RCX: 00007fd9a658e54a
[ 33.841704][ T316] RDX: 00007fd9a661dda7 RSI: 00007fd9a660e663 RDI: 00007fd9a661dda7
[ 33.841715][ T316] RBP: 00007fd9a660e8ac R08: 0000000000000000 R09: 00000000000001ff
[ 33.841725][ T316] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd9a65eb1a8
[ 33.841735][ T316] R13: 00007fd9a65eb180 R14: 0000000000000009 R15: 0000000000000000
[ 33.841747][ T316]
[ 33.841753][ T316]
[ 34.118168][ T316] Allocated by task 310:
[ 34.122239][ T316] kasan_save_track+0x3f/0x80
[ 34.126751][ T316] kasan_save_alloc_info+0x3c/0x50
[ 34.131704][ T316] __kasan_kmalloc+0x9d/0xb0
[ 34.136130][ T316] __kmalloc_cache_noprof+0x17c/0x300
[ 34.141340][ T316] binderfs_binder_device_create+0x15b/0x9e0
[ 34.147157][ T316] binderfs_fill_super+0x897/0xcb0
[ 34.152093][ T316] get_tree_nodev+0xbd/0x160
[ 34.156520][ T316] binderfs_fs_context_get_tree+0x20/0x30
[ 34.162196][ T316] vfs_get_tree+0x90/0x2c0
[ 34.166515][ T316] do_new_mount+0x2be/0xb40
[ 34.170870][ T316] path_mount+0x680/0x1000
[ 34.175121][ T316] __se_sys_mount+0x2c5/0x3b0
[ 34.179623][ T316] __x64_sys_mount+0xc3/0xe0
[ 34.184131][ T316] x64_sys_call+0x2ca2/0x2e00
[ 34.188654][ T316] do_syscall_64+0x54/0xf0
[ 34.192914][ T316] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 34.198711][ T316]
[ 34.200883][ T316] Freed by task 310:
[ 34.204616][ T316] kasan_save_track+0x3f/0x80
[ 34.209133][ T316] kasan_save_free_info+0x44/0x50
[ 34.213987][ T316] __kasan_slab_free+0x57/0x70
[ 34.218586][ T316] kfree+0x143/0x370
[ 34.222327][ T316] binderfs_evict_inode+0x18b/0x230
[ 34.227379][ T316] evict+0x4ab/0x940
[ 34.231086][ T316] iput+0x607/0x920
[ 34.234732][ T316] dentry_unlink_inode+0x389/0x460
[ 34.239677][ T316] __dentry_kill+0x207/0x640
[ 34.244105][ T316] shrink_dentry_list+0x319/0x510
[ 34.248962][ T316] shrink_dcache_parent+0xd2/0x360
[ 34.254007][ T316] do_one_tree+0x27/0xf0
[ 34.258098][ T316] shrink_dcache_for_umount+0xa7/0x150
[ 34.263370][ T316] generic_shutdown_super+0x6d/0x300
[ 34.268492][ T316] kill_anon_super+0x4a/0x1e0
[ 34.273008][ T316] kill_litter_super+0x5a/0x70
[ 34.277693][ T316] binderfs_kill_super+0x45/0x60
[ 34.282465][ T316] deactivate_locked_super+0xdc/0x290
[ 34.287674][ T316] deactivate_super+0xca/0x100
[ 34.292275][ T316] cleanup_mnt+0x42d/0x4d0
[ 34.296525][ T316] __cleanup_mnt+0x1d/0x30
[ 34.300964][ T316] task_work_run+0x24f/0x300
[ 34.305386][ T316] do_exit+0xb3d/0x2ad0
[ 34.309459][ T316] do_group_exit+0x21f/0x2e0
[ 34.313968][ T316] get_signal+0x1560/0x16b0
[ 34.318312][ T316] arch_do_signal_or_restart+0x96/0x790
[ 34.323687][ T316] syscall_exit_to_user_mode+0x63/0x110
[ 34.329183][ T316] do_syscall_64+0x60/0xf0
[ 34.333437][ T316] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 34.339353][ T316]
[ 34.341487][ T316] The buggy address belongs to the object at ffff888103e4a100
[ 34.341487][ T316] which belongs to the cache kmalloc-192 of size 192
[ 34.355465][ T316] The buggy address is located 8 bytes inside of
[ 34.355465][ T316] freed 192-byte region [ffff888103e4a100, ffff888103e4a1c0)
[ 34.369012][ T316]
[ 34.371179][ T316] The buggy address belongs to the physical page:
[ 34.377424][ T316] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103e4a
[ 34.386105][ T316] flags: 0x4000000000000000(zone=1)
[ 34.391139][ T316] page_type: f5(slab)
[ 34.394969][ T316] raw: 4000000000000000 ffff8881000413c0 ffffea00042d98c0 dead000000000002
[ 34.403493][ T316] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 34.411983][ T316] page dumped because: kasan: bad access detected
[ 34.418248][ T316] page_owner tracks the page as allocated
[ 34.423812][ T316] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 28, tgid 28 (kdevtmpfs), ts 1456480730, free_ts 0
[ 34.441435][ T316] post_alloc_hook+0x1eb/0x210
[ 34.446003][ T316] get_page_from_freelist+0x482b/0x48c0
[ 34.451391][ T316] __alloc_frozen_pages_noprof+0x3e8/0x890
[ 34.457025][ T316] allocate_slab+0x76/0x430
[ 34.461479][ T316] ___slab_alloc+0x7e0/0xcf0
[ 34.465885][ T316] __slab_alloc+0x5d/0xb0
[ 34.470052][ T316] __kmalloc_cache_noprof+0x1b9/0x300
[ 34.475250][ T316] alloc_fs_context+0x65/0x840
[ 34.479848][ T316] fs_context_for_mount+0x28/0x40
[ 34.484710][ T316] do_new_mount+0x160/0xb40
[ 34.489058][ T316] path_mount+0x680/0x1000
[ 34.493418][ T316] init_mount+0xd4/0x130
[ 34.497485][ T316] devtmpfs_setup+0x7b/0xe0
[ 34.501831][ T316] devtmpfsd+0x19/0x60
[ 34.505732][ T316] kthread+0x765/0x8d0
[ 34.509730][ T316] ret_from_fork+0x55/0x90
[ 34.514183][ T316] page_owner free stack trace missing
[ 34.519380][ T316]
[ 34.521528][ T316] Memory state around the buggy address:
[ 34.527000][ T316] ffff888103e4a000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.534988][ T316] ffff888103e4a080: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[ 34.542987][ T316] >ffff888103e4a100: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.550888][ T316] ^
[ 34.555051][ T316] ffff888103e4a180: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[ 34.562939][ T316] ffff888103e4a200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 34.570842][ T316] ==================================================================
[ 34.582189][ T316] Disabling lock debugging due to kernel taint
[ 34.981837][ T339] bridge0: port 1(bridge_slave_0) entered blocking state
[ 34.988796][ T339] bridge0: port 1(bridge_slave_0) entered disabled state
[ 34.995755][ T339] bridge_slave_0: entered allmulticast mode
[ 35.001865][ T339] bridge_slave_0: entered promiscuous mode
[ 35.008270][ T339] bridge0: port 2(bridge_slave_1) entered blocking state
[ 35.015441][ T339] bridge0: port 2(bridge_slave_1) entered disabled state
[ 35.022404][ T339] bridge_slave_1: entered allmulticast mode
[ 35.028454][ T339] bridge_slave_1: entered promiscuous mode
[ 35.105307][ T339] bridge0: port 2(bridge_slave_1) entered blocking state
[ 35.112184][ T339] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 35.119258][ T339] bridge0: port 1(bridge_slave_0) entered blocking state
[ 35.126101][ T339] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 35.145936][ T340] bridge0: port 1(bridge_slave_0) entered disabled state
[ 35.153313][ T340] bridge0: port 2(bridge_slave_1) entered disabled state
[ 35.162946][ T40] bridge0: port 1(bridge_slave_0) entered blocking state
[ 35.169885][ T40] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 35.180071][ T340] bridge0: port 2(bridge_slave_1) entered blocking state
[ 35.186954][ T340] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 35.213601][ T339] veth0_vlan: entered promiscuous mode
[ 35.224527][ T339] veth1_macvtap: entered promiscuous mode
[ 35.263604][ T339] syz-executor (339) used greatest stack depth: 20880 bytes left
[ 35.275286][ T340] bridge_slave_1: left allmulticast mode
[ 35.288850][ T340] bridge_slave_1: left promiscuous mode
[ 35.296192][ T340] bridge0: port 2(bridge_slave_1) entered disabled state
[ 35.303821][ T340] bridge_slave_0: left allmulticast mode
[ 35.309295][ T340] bridge_slave_0: left promiscuous mode
[ 35.314969][ T340] bridge0: port 1(bridge_slave_0) entered disabled state
[ 35.463604][ T340] veth1_macvtap: left promiscuous mode
[ 35.469039][ T340] veth0_vlan: left promiscuous mode
2025/01/31 03:34:08 executed programs: 0
[ 35.908867][ T371] bridge0: port 1(bridge_slave_0) entered blocking state
[ 35.915970][ T371] bridge0: port 1(bridge_slave_0) entered disabled state
[ 35.922880][ T371] bridge_slave_0: entered allmulticast mode
[ 35.928856][ T371] bridge_slave_0: entered promiscuous mode
[ 35.935601][ T371] bridge0: port 2(bridge_slave_1) entered blocking state
[ 35.943774][ T371] bridge0: port 2(bridge_slave_1) entered disabled state
[ 35.950664][ T371] bridge_slave_1: entered allmulticast mode
[ 35.957636][ T371] bridge_slave_1: entered promiscuous mode
[ 36.015044][ T371] bridge0: port 2(bridge_slave_1) entered blocking state
[ 36.021930][ T371] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 36.029005][ T371] bridge0: port 1(bridge_slave_0) entered blocking state
[ 36.035936][ T371] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 36.044872][ T12] bridge0: port 1(bridge_slave_0) entered disabled state
[ 36.052948][ T12] bridge0: port 2(bridge_slave_1) entered disabled state
[ 36.077311][ T12] bridge0: port 1(bridge_slave_0) entered blocking state
[ 36.084201][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 36.092886][ T40] bridge0: port 2(bridge_slave_1) entered blocking state
[ 36.099749][ T40] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 36.123854][ T371] veth0_vlan: entered promiscuous mode
[ 36.134957][ T371] veth1_macvtap: entered promiscuous mode
[ 36.192831][ T40] bridge_slave_1: left allmulticast mode
[ 36.198411][ T40] bridge_slave_1: left promiscuous mode
[ 36.204092][ T40] bridge0: port 2(bridge_slave_1) entered disabled state
[ 36.211854][ T40] bridge_slave_0: left allmulticast mode
[ 36.217324][ T40] bridge_slave_0: left promiscuous mode
[ 36.223403][ T40] 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='/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-build2408098701=/tmp/go-build -gno-record-gcc-switches'
git status (err=)
HEAD detached at 4c6ac32f33
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=4c6ac32f33aa00c680c8f4656d1fbf2887f390f1 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20250130-130318'" -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=\"4c6ac32f33aa00c680c8f4656d1fbf2887f390f1\"
/usr/bin/ld: /tmp/ccfXiKWy.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