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 ffff888034740008 by task syz-executor/5854
CPU: 1 UID: 0 PID: 5854 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: 0033:0x7ff9379874ca
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:00007ffd891f3258 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ff937a01ecb RCX: 00007ff9379874ca
RDX: 00007ff937a0ec27 RSI: 00007ff937a01ecb RDI: 00007ff937a0ec27
RBP: 00007ff937a020c3 R08: 0000000000000000 R09: 00007ffd891f3300
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff9379e41c8
R13: 00007ff9379e41a8 R14: 0000000000000009 R15: 0000000000000000
Allocated by task 5849:
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 5849:
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 ffff888034740000
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
freed 512-byte region [ffff888034740000, ffff888034740200)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x34740
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 ffffea0000d1d001 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 5207, tgid 5207 (udevd), ts 30859692042, free_ts 23941608573
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x365c/0x37a0 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4739
alloc_pages_mpol+0x311/0x660 mm/mempolicy.c:2270
alloc_slab_page mm/slub.c:2423 [inline]
allocate_slab+0x8f/0x3a0 mm/slub.c:2587
new_slab mm/slub.c:2640 [inline]
___slab_alloc+0xc27/0x14a0 mm/slub.c:3826
__slab_alloc+0x58/0xa0 mm/slub.c:3916
__slab_alloc_node mm/slub.c:3991 [inline]
slab_alloc_node mm/slub.c:4152 [inline]
__do_kmalloc_node mm/slub.c:4293 [inline]
__kmalloc_noprof+0x2e6/0x4c0 mm/slub.c:4306
kmalloc_noprof include/linux/slab.h:905 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
tomoyo_init_log+0x1b3d/0x2050 security/tomoyo/audit.c:275
tomoyo_supervisor+0x399/0x1a10 security/tomoyo/common.c:2198
tomoyo_audit_path_log security/tomoyo/file.c:168 [inline]
tomoyo_path_permission+0x243/0x360 security/tomoyo/file.c:587
tomoyo_check_open_permission+0x307/0x4f0 security/tomoyo/file.c:777
security_file_open+0xac/0x250 security/security.c:3114
do_dentry_open+0x320/0x1960 fs/open.c:932
vfs_open+0x3b/0x370 fs/open.c:1085
do_open fs/namei.c:3830 [inline]
path_openat+0x2c81/0x3590 fs/namei.c:3989
page last free pid 977 tgid 977 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
vfree+0x1c3/0x360 mm/vmalloc.c:3383
delayed_vfree_work+0x56/0x80 mm/vmalloc.c:3303
process_one_work kernel/workqueue.c:3236 [inline]
process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317
worker_thread+0x870/0xd30 kernel/workqueue.c:3398
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Memory state around the buggy address:
ffff88803473ff00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
ffff88803473ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888034740000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888034740080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888034740100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Warning: Permanently added '10.128.1.108' (ED25519) to the list of known hosts.
2025/02/01 06:22:00 ignoring optional flag "sandboxArg"="0"
2025/02/01 06:22:00 parsed 1 programs
[ 88.203983][ T5838] cgroup: Unknown subsys name 'net'
[ 88.345256][ T5838] cgroup: Unknown subsys name 'cpuset'
[ 88.354172][ T5838] cgroup: Unknown subsys name 'rlimit'
[ 89.917218][ T5838] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 92.323115][ T974] cfg80211: failed to load regulatory.db
[ 92.877660][ T5849] 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.
[ 93.136256][ T35] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 93.144768][ T35] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[ 93.185135][ T1319] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 93.195522][ T1319] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
[ 93.224752][ T5854] ==================================================================
[ 93.232872][ T5854] BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0
[ 93.240632][ T5854] Write of size 8 at addr ffff888034740008 by task syz-executor/5854
[ 93.248735][ T5854]
[ 93.251063][ T5854] CPU: 1 UID: 0 PID: 5854 Comm: syz-executor Not tainted 6.13.0-next-20250131-syzkaller-10663-gdf4b2bbff898-dirty #0
[ 93.251075][ T5854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 93.251087][ T5854] Call Trace:
[ 93.251092][ T5854]
[ 93.251097][ T5854] dump_stack_lvl+0x241/0x360
[ 93.251112][ T5854] ? __pfx_dump_stack_lvl+0x10/0x10
[ 93.251122][ T5854] ? __pfx__printk+0x10/0x10
[ 93.251131][ T5854] ? _printk+0xd5/0x120
[ 93.251139][ T5854] ? __virt_addr_valid+0x183/0x530
[ 93.251153][ T5854] ? __virt_addr_valid+0x183/0x530
[ 93.251166][ T5854] print_report+0x169/0x550
[ 93.251180][ T5854] ? __virt_addr_valid+0x183/0x530
[ 93.251192][ T5854] ? __virt_addr_valid+0x183/0x530
[ 93.251204][ T5854] ? __virt_addr_valid+0x45f/0x530
[ 93.251216][ T5854] ? __phys_addr+0xba/0x170
[ 93.251228][ T5854] ? binder_add_device+0x5f/0xa0
[ 93.251238][ T5854] kasan_report+0x143/0x180
[ 93.251247][ T5854] ? binder_add_device+0x5f/0xa0
[ 93.251258][ T5854] binder_add_device+0x5f/0xa0
[ 93.251267][ T5854] binderfs_binder_device_create+0x7bf/0x9c0
[ 93.251288][ T5854] binderfs_fill_super+0x944/0xd90
[ 93.251303][ T5854] ? __pfx_binderfs_fill_super+0x10/0x10
[ 93.251322][ T5854] ? shrinker_register+0x160/0x230
[ 93.251334][ T5854] ? sget_fc+0x909/0x9c0
[ 93.251347][ T5854] ? __pfx_set_anon_super_fc+0x10/0x10
[ 93.251358][ T5854] ? __pfx_binderfs_fill_super+0x10/0x10
[ 93.251371][ T5854] get_tree_nodev+0xb7/0x140
[ 93.251383][ T5854] vfs_get_tree+0x90/0x2b0
[ 93.251396][ T5854] do_new_mount+0x2be/0xb40
[ 93.251407][ T5854] ? __pfx_do_new_mount+0x10/0x10
[ 93.251418][ T5854] __se_sys_mount+0x2d6/0x3c0
[ 93.251427][ T5854] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 93.251441][ T5854] ? __pfx___se_sys_mount+0x10/0x10
[ 93.251450][ T5854] ? do_syscall_64+0x100/0x230
[ 93.251462][ T5854] ? __x64_sys_mount+0x20/0xc0
[ 93.251472][ T5854] do_syscall_64+0xf3/0x230
[ 93.251482][ T5854] ? clear_bhb_loop+0x35/0x90
[ 93.251495][ T5854] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 93.251507][ T5854] RIP: 0033:0x7ff9379874ca
[ 93.251524][ T5854] 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
[ 93.251532][ T5854] RSP: 002b:00007ffd891f3258 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 93.251542][ T5854] RAX: ffffffffffffffda RBX: 00007ff937a01ecb RCX: 00007ff9379874ca
[ 93.251549][ T5854] RDX: 00007ff937a0ec27 RSI: 00007ff937a01ecb RDI: 00007ff937a0ec27
[ 93.251555][ T5854] RBP: 00007ff937a020c3 R08: 0000000000000000 R09: 00007ffd891f3300
[ 93.251561][ T5854] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff9379e41c8
[ 93.251567][ T5854] R13: 00007ff9379e41a8 R14: 0000000000000009 R15: 0000000000000000
[ 93.251577][ T5854]
[ 93.251580][ T5854]
[ 93.526499][ T5854] Allocated by task 5849:
[ 93.530827][ T5854] kasan_save_track+0x3f/0x80
[ 93.535498][ T5854] __kasan_kmalloc+0x98/0xb0
[ 93.540078][ T5854] __kmalloc_cache_noprof+0x243/0x390
[ 93.545438][ T5854] binderfs_binder_device_create+0x16c/0x9c0
[ 93.551408][ T5854] binderfs_fill_super+0x944/0xd90
[ 93.556525][ T5854] get_tree_nodev+0xb7/0x140
[ 93.561107][ T5854] vfs_get_tree+0x90/0x2b0
[ 93.565544][ T5854] do_new_mount+0x2be/0xb40
[ 93.570055][ T5854] __se_sys_mount+0x2d6/0x3c0
[ 93.574720][ T5854] do_syscall_64+0xf3/0x230
[ 93.579236][ T5854] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 93.585166][ T5854]
[ 93.587480][ T5854] Freed by task 5849:
[ 93.591457][ T5854] kasan_save_track+0x3f/0x80
[ 93.596157][ T5854] kasan_save_free_info+0x40/0x50
[ 93.601194][ T5854] __kasan_slab_free+0x59/0x70
[ 93.606125][ T5854] kfree+0x196/0x430
[ 93.610025][ T5854] evict+0x4e8/0x9a0
[ 93.613916][ T5854] __dentry_kill+0x20d/0x630
[ 93.618590][ T5854] shrink_kill+0xa9/0x2c0
[ 93.622913][ T5854] shrink_dentry_list+0x2c0/0x5b0
[ 93.627949][ T5854] shrink_dcache_parent+0xcb/0x3b0
[ 93.633157][ T5854] do_one_tree+0x23/0xe0
[ 93.637411][ T5854] shrink_dcache_for_umount+0xb4/0x180
[ 93.642879][ T5854] generic_shutdown_super+0x6a/0x2d0
[ 93.648173][ T5854] kill_litter_super+0x76/0xb0
[ 93.652937][ T5854] binderfs_kill_super+0x44/0x90
[ 93.657883][ T5854] deactivate_locked_super+0xc4/0x130
[ 93.663274][ T5854] cleanup_mnt+0x41f/0x4b0
[ 93.667739][ T5854] task_work_run+0x24f/0x310
[ 93.672327][ T5854] do_exit+0xa2a/0x28e0
[ 93.676587][ T5854] do_group_exit+0x207/0x2c0
[ 93.681183][ T5854] get_signal+0x16b2/0x1750
[ 93.685677][ T5854] arch_do_signal_or_restart+0x96/0x860
[ 93.691214][ T5854] syscall_exit_to_user_mode+0xce/0x340
[ 93.696747][ T5854] do_syscall_64+0x100/0x230
[ 93.701329][ T5854] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 93.707213][ T5854]
[ 93.709524][ T5854] The buggy address belongs to the object at ffff888034740000
[ 93.709524][ T5854] which belongs to the cache kmalloc-512 of size 512
[ 93.723661][ T5854] The buggy address is located 8 bytes inside of
[ 93.723661][ T5854] freed 512-byte region [ffff888034740000, ffff888034740200)
[ 93.737360][ T5854]
[ 93.739673][ T5854] The buggy address belongs to the physical page:
[ 93.746074][ T5854] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x34740
[ 93.754861][ T5854] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 93.763349][ T5854] flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
[ 93.770887][ T5854] page_type: f5(slab)
[ 93.774862][ T5854] raw: 00fff00000000040 ffff88801ac41c80 dead000000000100 dead000000000122
[ 93.783436][ T5854] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 93.792092][ T5854] head: 00fff00000000040 ffff88801ac41c80 dead000000000100 dead000000000122
[ 93.800747][ T5854] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 93.809516][ T5854] head: 00fff00000000002 ffffea0000d1d001 ffffffffffffffff 0000000000000000
[ 93.818189][ T5854] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[ 93.826949][ T5854] page dumped because: kasan: bad access detected
[ 93.833636][ T5854] page_owner tracks the page as allocated
[ 93.839337][ T5854] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5207, tgid 5207 (udevd), ts 30859692042, free_ts 23941608573
[ 93.859655][ T5854] post_alloc_hook+0x1f4/0x240
[ 93.864414][ T5854] get_page_from_freelist+0x365c/0x37a0
[ 93.869978][ T5854] __alloc_frozen_pages_noprof+0x292/0x710
[ 93.875866][ T5854] alloc_pages_mpol+0x311/0x660
[ 93.880703][ T5854] allocate_slab+0x8f/0x3a0
[ 93.885283][ T5854] ___slab_alloc+0xc27/0x14a0
[ 93.889947][ T5854] __slab_alloc+0x58/0xa0
[ 93.894272][ T5854] __kmalloc_noprof+0x2e6/0x4c0
[ 93.899110][ T5854] tomoyo_init_log+0x1b3d/0x2050
[ 93.904034][ T5854] tomoyo_supervisor+0x399/0x1a10
[ 93.909162][ T5854] tomoyo_path_permission+0x243/0x360
[ 93.914545][ T5854] tomoyo_check_open_permission+0x307/0x4f0
[ 93.920443][ T5854] security_file_open+0xac/0x250
[ 93.925387][ T5854] do_dentry_open+0x320/0x1960
[ 93.930141][ T5854] vfs_open+0x3b/0x370
[ 93.934205][ T5854] path_openat+0x2c81/0x3590
[ 93.938787][ T5854] page last free pid 977 tgid 977 stack trace:
[ 93.944935][ T5854] free_frozen_pages+0xe0d/0x10e0
[ 93.949959][ T5854] vfree+0x1c3/0x360
[ 93.953842][ T5854] delayed_vfree_work+0x56/0x80
[ 93.958682][ T5854] process_scheduled_works+0xa66/0x1840
[ 93.964303][ T5854] worker_thread+0x870/0xd30
[ 93.968972][ T5854] kthread+0x7a9/0x920
[ 93.973064][ T5854] ret_from_fork+0x4b/0x80
[ 93.977561][ T5854] ret_from_fork_asm+0x1a/0x30
[ 93.982315][ T5854]
[ 93.984655][ T5854] Memory state around the buggy address:
[ 93.990269][ T5854] ffff88803473ff00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[ 93.998333][ T5854] ffff88803473ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 94.006402][ T5854] >ffff888034740000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 94.014454][ T5854] ^
[ 94.018790][ T5854] ffff888034740080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 94.026946][ T5854] ffff888034740100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 94.035017][ T5854] ==================================================================
[ 94.060600][ T5854] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 94.067835][ T5854] CPU: 0 UID: 0 PID: 5854 Comm: syz-executor Not tainted 6.13.0-next-20250131-syzkaller-10663-gdf4b2bbff898-dirty #0
[ 94.080064][ T5854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 94.090111][ T5854] Call Trace:
[ 94.093380][ T5854]
[ 94.096361][ T5854] dump_stack_lvl+0x241/0x360
[ 94.101041][ T5854] ? __pfx_dump_stack_lvl+0x10/0x10
[ 94.106229][ T5854] ? __pfx__printk+0x10/0x10
[ 94.110812][ T5854] ? preempt_schedule+0xe1/0xf0
[ 94.115671][ T5854] ? vscnprintf+0x5d/0x90
[ 94.120173][ T5854] panic+0x349/0x880
[ 94.124159][ T5854] ? check_panic_on_warn+0x21/0xb0
[ 94.129293][ T5854] ? __pfx_panic+0x10/0x10
[ 94.133729][ T5854] ? _raw_spin_unlock_irqrestore+0x130/0x140
[ 94.139787][ T5854] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[ 94.146104][ T5854] ? print_report+0x502/0x550
[ 94.150776][ T5854] check_panic_on_warn+0x86/0xb0
[ 94.155729][ T5854] ? binder_add_device+0x5f/0xa0
[ 94.160924][ T5854] end_report+0x77/0x160
[ 94.165192][ T5854] kasan_report+0x154/0x180
[ 94.169684][ T5854] ? binder_add_device+0x5f/0xa0
[ 94.174881][ T5854] binder_add_device+0x5f/0xa0
[ 94.179632][ T5854] binderfs_binder_device_create+0x7bf/0x9c0
[ 94.185602][ T5854] binderfs_fill_super+0x944/0xd90
[ 94.190707][ T5854] ? __pfx_binderfs_fill_super+0x10/0x10
[ 94.196350][ T5854] ? shrinker_register+0x160/0x230
[ 94.201461][ T5854] ? sget_fc+0x909/0x9c0
[ 94.205692][ T5854] ? __pfx_set_anon_super_fc+0x10/0x10
[ 94.211150][ T5854] ? __pfx_binderfs_fill_super+0x10/0x10
[ 94.216781][ T5854] get_tree_nodev+0xb7/0x140
[ 94.221367][ T5854] vfs_get_tree+0x90/0x2b0
[ 94.225773][ T5854] do_new_mount+0x2be/0xb40
[ 94.230263][ T5854] ? __pfx_do_new_mount+0x10/0x10
[ 94.235462][ T5854] __se_sys_mount+0x2d6/0x3c0
[ 94.240153][ T5854] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 94.246141][ T5854] ? __pfx___se_sys_mount+0x10/0x10
[ 94.251436][ T5854] ? do_syscall_64+0x100/0x230
[ 94.256184][ T5854] ? __x64_sys_mount+0x20/0xc0
[ 94.260966][ T5854] do_syscall_64+0xf3/0x230
[ 94.265719][ T5854] ? clear_bhb_loop+0x35/0x90
[ 94.270392][ T5854] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 94.276448][ T5854] RIP: 0033:0x7ff9379874ca
[ 94.280936][ T5854] 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
[ 94.300543][ T5854] RSP: 002b:00007ffd891f3258 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 94.308965][ T5854] RAX: ffffffffffffffda RBX: 00007ff937a01ecb RCX: 00007ff9379874ca
[ 94.316935][ T5854] RDX: 00007ff937a0ec27 RSI: 00007ff937a01ecb RDI: 00007ff937a0ec27
[ 94.324992][ T5854] RBP: 00007ff937a020c3 R08: 0000000000000000 R09: 00007ffd891f3300
[ 94.332968][ T5854] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff9379e41c8
[ 94.341038][ T5854] R13: 00007ff9379e41a8 R14: 0000000000000009 R15: 0000000000000000
[ 94.349095][ T5854]
[ 94.352403][ T5854] Kernel Offset: disabled
[ 94.356736][ T5854] 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-build3059737875=/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/ccCwtpAa.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