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 ffff888032b91008 by task syz-executor/5850
CPU: 0 UID: 0 PID: 5850 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: 0033:0x7f824e5874ca
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:00007ffde9046428 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f824e601ecb RCX: 00007f824e5874ca
RDX: 00007f824e60ec27 RSI: 00007f824e601ecb RDI: 00007f824e60ec27
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f824e6180e0
R13: 00007ffde90464a8 R14: 0000000000000009 R15: 0000000000000000
Allocated by task 5846:
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 5846:
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 ffff888032b91000
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
freed 512-byte region [ffff888032b91000, ffff888032b91200)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x32b90
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801ac41c80 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801ac41c80 dead000000000100 dead000000000122
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000002 ffffea0000cae401 ffffffffffffffff 0000000000000000
head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5210, tgid 5210 (udevadm), ts 33831575333, free_ts 33800659999
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x365c/0x37a0 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4739
alloc_pages_mpol+0x311/0x660 mm/mempolicy.c:2270
alloc_slab_page mm/slub.c:2423 [inline]
allocate_slab+0x8f/0x3a0 mm/slub.c:2587
new_slab mm/slub.c:2640 [inline]
___slab_alloc+0xc27/0x14a0 mm/slub.c:3826
__slab_alloc+0x58/0xa0 mm/slub.c:3916
__slab_alloc_node mm/slub.c:3991 [inline]
slab_alloc_node mm/slub.c:4152 [inline]
__kmalloc_cache_noprof+0x27b/0x390 mm/slub.c:4320
kmalloc_noprof include/linux/slab.h:901 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
kernfs_fop_open+0x3e0/0xd10 fs/kernfs/file.c:623
do_dentry_open+0xdec/0x1960 fs/open.c:955
vfs_open+0x3b/0x370 fs/open.c:1085
do_open fs/namei.c:3830 [inline]
path_openat+0x2c81/0x3590 fs/namei.c:3989
do_filp_open+0x27f/0x4e0 fs/namei.c:4016
do_sys_openat2+0x13e/0x1d0 fs/open.c:1427
do_sys_open fs/open.c:1442 [inline]
__do_sys_openat fs/open.c:1458 [inline]
__se_sys_openat fs/open.c:1453 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1453
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
page last free pid 5213 tgid 5213 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_frozen_pages+0xe0d/0x10e0 mm/page_alloc.c:2660
discard_slab mm/slub.c:2684 [inline]
__put_partials+0x160/0x1c0 mm/slub.c:3153
put_cpu_partial+0x17c/0x250 mm/slub.c:3228
__slab_free+0x290/0x380 mm/slub.c:4479
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4115 [inline]
slab_alloc_node mm/slub.c:4164 [inline]
kmem_cache_alloc_noprof+0x1d9/0x380 mm/slub.c:4171
getname_flags+0xb7/0x540 fs/namei.c:139
do_sys_openat2+0xd2/0x1d0 fs/open.c:1421
do_sys_open fs/open.c:1442 [inline]
__do_sys_openat fs/open.c:1458 [inline]
__se_sys_openat fs/open.c:1453 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1453
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Memory state around the buggy address:
ffff888032b90f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff888032b90f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888032b91000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888032b91080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888032b91100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Warning: Permanently added '10.128.1.139' (ED25519) to the list of known hosts.
2025/01/31 10:23:39 ignoring optional flag "sandboxArg"="0"
2025/01/31 10:23:40 parsed 1 programs
[ 91.155632][ T5836] cgroup: Unknown subsys name 'net'
[ 91.264318][ T5836] cgroup: Unknown subsys name 'cpuset'
[ 91.273758][ T5836] cgroup: Unknown subsys name 'rlimit'
[ 92.377365][ T978] cfg80211: failed to load regulatory.db
[ 92.955748][ T5836] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 95.939203][ T5846] 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.
[ 96.165505][ T5850] ==================================================================
[ 96.173654][ T5850] BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0
[ 96.181497][ T5850] Write of size 8 at addr ffff888032b91008 by task syz-executor/5850
[ 96.189567][ T5850]
[ 96.191903][ T5850] CPU: 0 UID: 0 PID: 5850 Comm: syz-executor Not tainted 6.13.0-next-20250131-syzkaller-10663-gdf4b2bbff898-dirty #0
[ 96.191916][ T5850] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 96.191928][ T5850] Call Trace:
[ 96.191935][ T5850]
[ 96.191940][ T5850] dump_stack_lvl+0x241/0x360
[ 96.191960][ T5850] ? __pfx_dump_stack_lvl+0x10/0x10
[ 96.191970][ T5850] ? __pfx__printk+0x10/0x10
[ 96.191979][ T5850] ? _printk+0xd5/0x120
[ 96.191987][ T5850] ? __virt_addr_valid+0x183/0x530
[ 96.192001][ T5850] ? __virt_addr_valid+0x183/0x530
[ 96.192014][ T5850] print_report+0x169/0x550
[ 96.192027][ T5850] ? __virt_addr_valid+0x183/0x530
[ 96.192039][ T5850] ? __virt_addr_valid+0x183/0x530
[ 96.192051][ T5850] ? __virt_addr_valid+0x45f/0x530
[ 96.192063][ T5850] ? __phys_addr+0xba/0x170
[ 96.192075][ T5850] ? binder_add_device+0x5f/0xa0
[ 96.192084][ T5850] kasan_report+0x143/0x180
[ 96.192093][ T5850] ? binder_add_device+0x5f/0xa0
[ 96.192103][ T5850] binder_add_device+0x5f/0xa0
[ 96.192113][ T5850] binderfs_binder_device_create+0x7bf/0x9c0
[ 96.192129][ T5850] binderfs_fill_super+0x944/0xd90
[ 96.192144][ T5850] ? __pfx_binderfs_fill_super+0x10/0x10
[ 96.192162][ T5850] ? shrinker_register+0x160/0x230
[ 96.192175][ T5850] ? sget_fc+0x909/0x9c0
[ 96.192187][ T5850] ? __pfx_set_anon_super_fc+0x10/0x10
[ 96.192198][ T5850] ? __pfx_binderfs_fill_super+0x10/0x10
[ 96.192211][ T5850] get_tree_nodev+0xb7/0x140
[ 96.192223][ T5850] vfs_get_tree+0x90/0x2b0
[ 96.192236][ T5850] do_new_mount+0x2be/0xb40
[ 96.192248][ T5850] ? __pfx_do_new_mount+0x10/0x10
[ 96.192259][ T5850] __se_sys_mount+0x2d6/0x3c0
[ 96.192269][ T5850] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 96.192282][ T5850] ? __pfx___se_sys_mount+0x10/0x10
[ 96.192292][ T5850] ? do_syscall_64+0x100/0x230
[ 96.192303][ T5850] ? __x64_sys_mount+0x20/0xc0
[ 96.192313][ T5850] do_syscall_64+0xf3/0x230
[ 96.192324][ T5850] ? clear_bhb_loop+0x35/0x90
[ 96.192337][ T5850] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 96.192349][ T5850] RIP: 0033:0x7f824e5874ca
[ 96.192362][ T5850] 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
[ 96.192369][ T5850] RSP: 002b:00007ffde9046428 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 96.192380][ T5850] RAX: ffffffffffffffda RBX: 00007f824e601ecb RCX: 00007f824e5874ca
[ 96.192387][ T5850] RDX: 00007f824e60ec27 RSI: 00007f824e601ecb RDI: 00007f824e60ec27
[ 96.192393][ T5850] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 96.192398][ T5850] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f824e6180e0
[ 96.192404][ T5850] R13: 00007ffde90464a8 R14: 0000000000000009 R15: 0000000000000000
[ 96.192414][ T5850]
[ 96.192417][ T5850]
[ 96.466811][ T5850] Allocated by task 5846:
[ 96.471159][ T5850] kasan_save_track+0x3f/0x80
[ 96.475832][ T5850] __kasan_kmalloc+0x98/0xb0
[ 96.480417][ T5850] __kmalloc_cache_noprof+0x243/0x390
[ 96.485778][ T5850] binderfs_binder_device_create+0x16c/0x9c0
[ 96.491745][ T5850] binderfs_fill_super+0x944/0xd90
[ 96.496871][ T5850] get_tree_nodev+0xb7/0x140
[ 96.501448][ T5850] vfs_get_tree+0x90/0x2b0
[ 96.505849][ T5850] do_new_mount+0x2be/0xb40
[ 96.510358][ T5850] __se_sys_mount+0x2d6/0x3c0
[ 96.515023][ T5850] do_syscall_64+0xf3/0x230
[ 96.519510][ T5850] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 96.525397][ T5850]
[ 96.527709][ T5850] Freed by task 5846:
[ 96.531677][ T5850] kasan_save_track+0x3f/0x80
[ 96.536351][ T5850] kasan_save_free_info+0x40/0x50
[ 96.541363][ T5850] __kasan_slab_free+0x59/0x70
[ 96.546146][ T5850] kfree+0x196/0x430
[ 96.550026][ T5850] evict+0x4e8/0x9a0
[ 96.553905][ T5850] __dentry_kill+0x20d/0x630
[ 96.558479][ T5850] shrink_kill+0xa9/0x2c0
[ 96.562793][ T5850] shrink_dentry_list+0x2c0/0x5b0
[ 96.567799][ T5850] shrink_dcache_parent+0xcb/0x3b0
[ 96.572896][ T5850] do_one_tree+0x23/0xe0
[ 96.577144][ T5850] shrink_dcache_for_umount+0xb4/0x180
[ 96.582784][ T5850] generic_shutdown_super+0x6a/0x2d0
[ 96.588101][ T5850] kill_litter_super+0x76/0xb0
[ 96.592862][ T5850] binderfs_kill_super+0x44/0x90
[ 96.597820][ T5850] deactivate_locked_super+0xc4/0x130
[ 96.603269][ T5850] cleanup_mnt+0x41f/0x4b0
[ 96.607794][ T5850] task_work_run+0x24f/0x310
[ 96.612504][ T5850] do_exit+0xa2a/0x28e0
[ 96.616652][ T5850] do_group_exit+0x207/0x2c0
[ 96.621229][ T5850] get_signal+0x16b2/0x1750
[ 96.625725][ T5850] arch_do_signal_or_restart+0x96/0x860
[ 96.631280][ T5850] syscall_exit_to_user_mode+0xce/0x340
[ 96.636832][ T5850] do_syscall_64+0x100/0x230
[ 96.641427][ T5850] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 96.647313][ T5850]
[ 96.649626][ T5850] The buggy address belongs to the object at ffff888032b91000
[ 96.649626][ T5850] which belongs to the cache kmalloc-512 of size 512
[ 96.663680][ T5850] The buggy address is located 8 bytes inside of
[ 96.663680][ T5850] freed 512-byte region [ffff888032b91000, ffff888032b91200)
[ 96.677299][ T5850]
[ 96.679610][ T5850] The buggy address belongs to the physical page:
[ 96.686057][ T5850] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x32b90
[ 96.694815][ T5850] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 96.703569][ T5850] flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
[ 96.711139][ T5850] page_type: f5(slab)
[ 96.715191][ T5850] raw: 00fff00000000040 ffff88801ac41c80 dead000000000100 dead000000000122
[ 96.723776][ T5850] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 96.732443][ T5850] head: 00fff00000000040 ffff88801ac41c80 dead000000000100 dead000000000122
[ 96.741134][ T5850] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 96.749812][ T5850] head: 00fff00000000002 ffffea0000cae401 ffffffffffffffff 0000000000000000
[ 96.758562][ T5850] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[ 96.767364][ T5850] page dumped because: kasan: bad access detected
[ 96.773937][ T5850] page_owner tracks the page as allocated
[ 96.779738][ T5850] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5210, tgid 5210 (udevadm), ts 33831575333, free_ts 33800659999
[ 96.800824][ T5850] post_alloc_hook+0x1f4/0x240
[ 96.805617][ T5850] get_page_from_freelist+0x365c/0x37a0
[ 96.811174][ T5850] __alloc_frozen_pages_noprof+0x292/0x710
[ 96.817233][ T5850] alloc_pages_mpol+0x311/0x660
[ 96.822094][ T5850] allocate_slab+0x8f/0x3a0
[ 96.826675][ T5850] ___slab_alloc+0xc27/0x14a0
[ 96.831339][ T5850] __slab_alloc+0x58/0xa0
[ 96.835648][ T5850] __kmalloc_cache_noprof+0x27b/0x390
[ 96.841088][ T5850] kernfs_fop_open+0x3e0/0xd10
[ 96.845834][ T5850] do_dentry_open+0xdec/0x1960
[ 96.850577][ T5850] vfs_open+0x3b/0x370
[ 96.854728][ T5850] path_openat+0x2c81/0x3590
[ 96.859303][ T5850] do_filp_open+0x27f/0x4e0
[ 96.863938][ T5850] do_sys_openat2+0x13e/0x1d0
[ 96.868678][ T5850] __x64_sys_openat+0x247/0x2a0
[ 96.873604][ T5850] do_syscall_64+0xf3/0x230
[ 96.878100][ T5850] page last free pid 5213 tgid 5213 stack trace:
[ 96.884430][ T5850] free_frozen_pages+0xe0d/0x10e0
[ 96.889459][ T5850] __put_partials+0x160/0x1c0
[ 96.894125][ T5850] put_cpu_partial+0x17c/0x250
[ 96.898947][ T5850] __slab_free+0x290/0x380
[ 96.903369][ T5850] qlist_free_all+0x9a/0x140
[ 96.907969][ T5850] kasan_quarantine_reduce+0x14f/0x170
[ 96.913659][ T5850] __kasan_slab_alloc+0x23/0x80
[ 96.918500][ T5850] kmem_cache_alloc_noprof+0x1d9/0x380
[ 96.923960][ T5850] getname_flags+0xb7/0x540
[ 96.928448][ T5850] do_sys_openat2+0xd2/0x1d0
[ 96.933125][ T5850] __x64_sys_openat+0x247/0x2a0
[ 96.937956][ T5850] do_syscall_64+0xf3/0x230
[ 96.942450][ T5850] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 96.948519][ T5850]
[ 96.950849][ T5850] Memory state around the buggy address:
[ 96.956471][ T5850] ffff888032b90f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 96.964547][ T5850] ffff888032b90f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 96.972619][ T5850] >ffff888032b91000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 96.980700][ T5850] ^
[ 96.985055][ T5850] ffff888032b91080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 96.993129][ T5850] ffff888032b91100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 97.001198][ T5850] ==================================================================
[ 97.017314][ T5850] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 97.024555][ T5850] CPU: 0 UID: 0 PID: 5850 Comm: syz-executor Not tainted 6.13.0-next-20250131-syzkaller-10663-gdf4b2bbff898-dirty #0
[ 97.036787][ T5850] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 97.047011][ T5850] Call Trace:
[ 97.050285][ T5850]
[ 97.053220][ T5850] dump_stack_lvl+0x241/0x360
[ 97.057980][ T5850] ? __pfx_dump_stack_lvl+0x10/0x10
[ 97.063256][ T5850] ? __pfx__printk+0x10/0x10
[ 97.067838][ T5850] ? preempt_schedule+0xe1/0xf0
[ 97.072854][ T5850] ? vscnprintf+0x5d/0x90
[ 97.077184][ T5850] panic+0x349/0x880
[ 97.081077][ T5850] ? check_panic_on_warn+0x21/0xb0
[ 97.086187][ T5850] ? __pfx_panic+0x10/0x10
[ 97.090704][ T5850] ? _raw_spin_unlock_irqrestore+0x130/0x140
[ 97.096673][ T5850] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[ 97.103006][ T5850] ? print_report+0x502/0x550
[ 97.107800][ T5850] check_panic_on_warn+0x86/0xb0
[ 97.112757][ T5850] ? binder_add_device+0x5f/0xa0
[ 97.117693][ T5850] end_report+0x77/0x160
[ 97.121932][ T5850] kasan_report+0x154/0x180
[ 97.126428][ T5850] ? binder_add_device+0x5f/0xa0
[ 97.131529][ T5850] binder_add_device+0x5f/0xa0
[ 97.136279][ T5850] binderfs_binder_device_create+0x7bf/0x9c0
[ 97.142256][ T5850] binderfs_fill_super+0x944/0xd90
[ 97.147366][ T5850] ? __pfx_binderfs_fill_super+0x10/0x10
[ 97.153144][ T5850] ? shrinker_register+0x160/0x230
[ 97.158291][ T5850] ? sget_fc+0x909/0x9c0
[ 97.162541][ T5850] ? __pfx_set_anon_super_fc+0x10/0x10
[ 97.168033][ T5850] ? __pfx_binderfs_fill_super+0x10/0x10
[ 97.173679][ T5850] get_tree_nodev+0xb7/0x140
[ 97.178274][ T5850] vfs_get_tree+0x90/0x2b0
[ 97.182692][ T5850] do_new_mount+0x2be/0xb40
[ 97.187188][ T5850] ? __pfx_do_new_mount+0x10/0x10
[ 97.192307][ T5850] __se_sys_mount+0x2d6/0x3c0
[ 97.196976][ T5850] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 97.202950][ T5850] ? __pfx___se_sys_mount+0x10/0x10
[ 97.208316][ T5850] ? do_syscall_64+0x100/0x230
[ 97.213081][ T5850] ? __x64_sys_mount+0x20/0xc0
[ 97.217843][ T5850] do_syscall_64+0xf3/0x230
[ 97.222348][ T5850] ? clear_bhb_loop+0x35/0x90
[ 97.227031][ T5850] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 97.232965][ T5850] RIP: 0033:0x7f824e5874ca
[ 97.237383][ T5850] 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
[ 97.256996][ T5850] RSP: 002b:00007ffde9046428 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 97.265422][ T5850] RAX: ffffffffffffffda RBX: 00007f824e601ecb RCX: 00007f824e5874ca
[ 97.273384][ T5850] RDX: 00007f824e60ec27 RSI: 00007f824e601ecb RDI: 00007f824e60ec27
[ 97.281374][ T5850] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 97.289342][ T5850] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f824e6180e0
[ 97.297391][ T5850] R13: 00007ffde90464a8 R14: 0000000000000009 R15: 0000000000000000
[ 97.305455][ T5850]
[ 97.308794][ T5850] Kernel Offset: disabled
[ 97.313124][ T5850] 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-build2984726701=/tmp/go-build -gno-record-gcc-switches'
git status (err=)
HEAD detached at f3558dbf03
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=f3558dbf032eab2b77c1cb11b9ce2baffe7838d3 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20250103-110009'" "-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=\"f3558dbf032eab2b77c1cb11b9ce2baffe7838d3\"
/usr/bin/ld: /tmp/ccRHhjio.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