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 ffff88803239f808 by task syz-executor/5724
CPU: 1 UID: 0 PID: 5724 Comm: syz-executor Not tainted 6.14.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
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:408 [inline]
print_report+0x16e/0x5b0 mm/kasan/report.c:521
kasan_report+0x143/0x180 mm/kasan/report.c:634
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+0x90/0x290 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+0x82/0x160 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f293498e90a
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:00007f2934ccff68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f2934a0e663 RCX: 00007f293498e90a
RDX: 00007f2934a1dda7 RSI: 00007f2934a0e663 RDI: 00007f2934a1dda7
RBP: 00007f2934a0e8ac R08: 0000000000000000 R09: 0000000000000100
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f29349eb1a8
R13: 00007f29349eb180 R14: 0000000000000009 R15: 0000000000000000
Allocated by task 5718:
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+0x7d/0x90 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__kmalloc_cache_noprof+0x23e/0x360 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+0x90/0x290 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+0x82/0x160 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Freed by task 5718:
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+0x36/0x50 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+0x181/0x430 mm/slub.c:4757
evict+0x4e8/0x9a0 fs/inode.c:796
__dentry_kill+0x200/0x610 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+0xc4/0x120 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/0x28d0 kernel/exit.c:938
do_group_exit+0x207/0x2c0 kernel/exit.c:1087
get_signal+0x16a6/0x1740 kernel/signal.c:3036
arch_do_signal_or_restart+0x96/0x830 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+0xcd/0x330 kernel/entry/common.c:218
do_syscall_64+0x8e/0x160 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x76/0x7e
The buggy address belongs to the object at ffff88803239f800
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
freed 512-byte region [ffff88803239f800, ffff88803239fa00)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88803239dc00 pfn:0x3239c
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000240 ffff88801a041c80 ffffea0000bfcb10 ffffea00009a4f10
raw: ffff88803239dc00 000000000010000f 00000000f5000000 0000000000000000
head: 00fff00000000240 ffff88801a041c80 ffffea0000bfcb10 ffffea00009a4f10
head: ffff88803239dc00 000000000010000f 00000000f5000000 0000000000000000
head: 00fff00000000002 ffffea0000c8e701 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 5093, tgid 5093 (udevadm), ts 34957158117, free_ts 34954255317
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1ec/0x220 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x3607/0x3750 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x256/0x690 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+0xc35/0x14a0 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+0x276/0x360 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+0xdea/0x1960 fs/open.c:956
vfs_open+0x3b/0x370 fs/open.c:1086
do_open fs/namei.c:3830 [inline]
path_openat+0x2c7d/0x3590 fs/namei.c:3989
do_filp_open+0x27f/0x4e0 fs/namei.c:4016
do_sys_openat2+0x13e/0x1d0 fs/open.c:1428
do_sys_open fs/open.c:1443 [inline]
__do_sys_openat fs/open.c:1459 [inline]
__se_sys_openat fs/open.c:1454 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1454
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x82/0x160 arch/x86/entry/common.c:83
page last free pid 5082 tgid 5082 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_frozen_pages+0xdf5/0x10b0 mm/page_alloc.c:2660
discard_slab mm/slub.c:2684 [inline]
__put_partials+0x15e/0x1b0 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+0x23/0x60 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4115 [inline]
slab_alloc_node mm/slub.c:4164 [inline]
__do_kmalloc_node mm/slub.c:4293 [inline]
__kmalloc_noprof+0x231/0x490 mm/slub.c:4306
kmalloc_noprof include/linux/slab.h:905 [inline]
tomoyo_realpath_from_path+0xcf/0x5e0 security/tomoyo/realpath.c:251
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_perm+0x2b7/0x740 security/tomoyo/file.c:822
security_inode_getattr+0x130/0x330 security/security.c:2377
vfs_getattr+0x2a/0x3a0 fs/stat.c:243
vfs_statx_path fs/stat.c:283 [inline]
vfs_statx+0x1ae/0x4f0 fs/stat.c:349
vfs_fstatat+0xe5/0x130 fs/stat.c:368
__do_sys_newfstatat fs/stat.c:532 [inline]
__se_sys_newfstatat fs/stat.c:526 [inline]
__x64_sys_newfstatat+0x11d/0x1a0 fs/stat.c:526
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x82/0x160 arch/x86/entry/common.c:83
Memory state around the buggy address:
ffff88803239f700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88803239f780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88803239f800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88803239f880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88803239f900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Warning: Permanently added '10.128.0.147' (ED25519) to the list of known hosts.
2025/03/06 16:32:06 ignoring optional flag "sandboxArg"="0"
2025/03/06 16:32:07 parsed 1 programs
[ 81.471773][ T5712] cgroup: Unknown subsys name 'net'
[ 81.583703][ T5712] cgroup: Unknown subsys name 'cpuset'
[ 81.592993][ T5712] cgroup: Unknown subsys name 'rlimit'
[ 81.598659][ T5712] cgroup: Unknown subsys name 'memory'
[ 83.032017][ T5712] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 85.877913][ T5724] ==================================================================
[ 85.886048][ T5724] BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0
[ 85.893817][ T5724] Write of size 8 at addr ffff88803239f808 by task syz-executor/5724
[ 85.901882][ T5724]
[ 85.904217][ T5724] CPU: 1 UID: 0 PID: 5724 Comm: syz-executor Not tainted 6.14.0-rc5-syzkaller #0
[ 85.904234][ T5724] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[ 85.904248][ T5724] Call Trace:
[ 85.904257][ T5724]
[ 85.904265][ T5724] dump_stack_lvl+0x241/0x360
[ 85.904289][ T5724] ? __pfx_dump_stack_lvl+0x10/0x10
[ 85.904305][ T5724] ? __pfx__printk+0x10/0x10
[ 85.904322][ T5724] ? _printk+0xd5/0x120
[ 85.904336][ T5724] ? __virt_addr_valid+0x183/0x530
[ 85.904355][ T5724] ? __virt_addr_valid+0x183/0x530
[ 85.904374][ T5724] print_report+0x16e/0x5b0
[ 85.904396][ T5724] ? __virt_addr_valid+0x183/0x530
[ 85.904414][ T5724] ? __virt_addr_valid+0x183/0x530
[ 85.904431][ T5724] ? __virt_addr_valid+0x45f/0x530
[ 85.904448][ T5724] ? __phys_addr+0xba/0x170
[ 85.904466][ T5724] ? binder_add_device+0x5f/0xa0
[ 85.904484][ T5724] kasan_report+0x143/0x180
[ 85.904506][ T5724] ? binder_add_device+0x5f/0xa0
[ 85.904525][ T5724] binder_add_device+0x5f/0xa0
[ 85.904542][ T5724] binderfs_binder_device_create+0x7bf/0x9c0
[ 85.904563][ T5724] binderfs_fill_super+0x944/0xd90
[ 85.904581][ T5724] ? __pfx_binderfs_fill_super+0x10/0x10
[ 85.904606][ T5724] ? shrinker_register+0x160/0x230
[ 85.904626][ T5724] ? sget_fc+0x909/0x9c0
[ 85.904649][ T5724] ? __pfx_set_anon_super_fc+0x10/0x10
[ 85.904664][ T5724] ? __pfx_binderfs_fill_super+0x10/0x10
[ 85.904681][ T5724] get_tree_nodev+0xb7/0x140
[ 85.904697][ T5724] vfs_get_tree+0x90/0x290
[ 85.904714][ T5724] do_new_mount+0x2be/0xb40
[ 85.904735][ T5724] ? __pfx_do_new_mount+0x10/0x10
[ 85.904756][ T5724] __se_sys_mount+0x2d6/0x3c0
[ 85.904775][ T5724] ? lockdep_hardirqs_on_prepare+0x43d/0x7a0
[ 85.904796][ T5724] ? __pfx___se_sys_mount+0x10/0x10
[ 85.904816][ T5724] ? __x64_sys_mount+0x20/0xc0
[ 85.904835][ T5724] do_syscall_64+0x82/0x160
[ 85.904854][ T5724] ? clear_bhb_loop+0x25/0x80
[ 85.904877][ T5724] ? clear_bhb_loop+0x25/0x80
[ 85.904898][ T5724] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 85.904920][ T5724] RIP: 0033:0x7f293498e90a
[ 85.904939][ T5724] 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
[ 85.904951][ T5724] RSP: 002b:00007f2934ccff68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 85.904969][ T5724] RAX: ffffffffffffffda RBX: 00007f2934a0e663 RCX: 00007f293498e90a
[ 85.904980][ T5724] RDX: 00007f2934a1dda7 RSI: 00007f2934a0e663 RDI: 00007f2934a1dda7
[ 85.904990][ T5724] RBP: 00007f2934a0e8ac R08: 0000000000000000 R09: 0000000000000100
[ 85.905000][ T5724] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f29349eb1a8
[ 85.905010][ T5724] R13: 00007f29349eb180 R14: 0000000000000009 R15: 0000000000000000
[ 85.905030][ T5724]
[ 85.905035][ T5724]
[ 86.176180][ T5724] Allocated by task 5718:
[ 86.180520][ T5724] kasan_save_track+0x3f/0x80
[ 86.185215][ T5724] __kasan_kmalloc+0x7d/0x90
[ 86.189827][ T5724] __kmalloc_cache_noprof+0x23e/0x360
[ 86.195466][ T5724] binderfs_binder_device_create+0x16c/0x9c0
[ 86.201443][ T5724] binderfs_fill_super+0x944/0xd90
[ 86.206634][ T5724] get_tree_nodev+0xb7/0x140
[ 86.211219][ T5724] vfs_get_tree+0x90/0x290
[ 86.215661][ T5724] do_new_mount+0x2be/0xb40
[ 86.220164][ T5724] __se_sys_mount+0x2d6/0x3c0
[ 86.224859][ T5724] do_syscall_64+0x82/0x160
[ 86.229380][ T5724] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 86.235275][ T5724]
[ 86.237591][ T5724] Freed by task 5718:
[ 86.241559][ T5724] kasan_save_track+0x3f/0x80
[ 86.246232][ T5724] kasan_save_free_info+0x40/0x50
[ 86.251247][ T5724] __kasan_slab_free+0x36/0x50
[ 86.256022][ T5724] kfree+0x181/0x430
[ 86.259910][ T5724] evict+0x4e8/0x9a0
[ 86.263795][ T5724] __dentry_kill+0x200/0x610
[ 86.268381][ T5724] shrink_kill+0xa9/0x2c0
[ 86.272898][ T5724] shrink_dentry_list+0x2c0/0x5b0
[ 86.277962][ T5724] shrink_dcache_parent+0xcb/0x3b0
[ 86.283113][ T5724] do_one_tree+0x23/0xe0
[ 86.287372][ T5724] shrink_dcache_for_umount+0xb4/0x180
[ 86.292843][ T5724] generic_shutdown_super+0x6a/0x2d0
[ 86.298137][ T5724] kill_litter_super+0x76/0xb0
[ 86.302894][ T5724] binderfs_kill_super+0x44/0x90
[ 86.307825][ T5724] deactivate_locked_super+0xc4/0x120
[ 86.313236][ T5724] cleanup_mnt+0x41f/0x4b0
[ 86.317738][ T5724] task_work_run+0x24f/0x310
[ 86.322364][ T5724] do_exit+0xa2a/0x28d0
[ 86.326521][ T5724] do_group_exit+0x207/0x2c0
[ 86.331113][ T5724] get_signal+0x16a6/0x1740
[ 86.335626][ T5724] arch_do_signal_or_restart+0x96/0x830
[ 86.341198][ T5724] syscall_exit_to_user_mode+0xcd/0x330
[ 86.346768][ T5724] do_syscall_64+0x8e/0x160
[ 86.351282][ T5724] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 86.357189][ T5724]
[ 86.359510][ T5724] The buggy address belongs to the object at ffff88803239f800
[ 86.359510][ T5724] which belongs to the cache kmalloc-512 of size 512
[ 86.373659][ T5724] The buggy address is located 8 bytes inside of
[ 86.373659][ T5724] freed 512-byte region [ffff88803239f800, ffff88803239fa00)
[ 86.387302][ T5724]
[ 86.389618][ T5724] The buggy address belongs to the physical page:
[ 86.396032][ T5724] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88803239dc00 pfn:0x3239c
[ 86.406125][ T5724] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 86.414634][ T5724] flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff)
[ 86.423129][ T5724] page_type: f5(slab)
[ 86.427297][ T5724] raw: 00fff00000000240 ffff88801a041c80 ffffea0000bfcb10 ffffea00009a4f10
[ 86.435925][ T5724] raw: ffff88803239dc00 000000000010000f 00000000f5000000 0000000000000000
[ 86.444604][ T5724] head: 00fff00000000240 ffff88801a041c80 ffffea0000bfcb10 ffffea00009a4f10
[ 86.453358][ T5724] head: ffff88803239dc00 000000000010000f 00000000f5000000 0000000000000000
[ 86.462110][ T5724] head: 00fff00000000002 ffffea0000c8e701 ffffffffffffffff 0000000000000000
[ 86.470813][ T5724] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[ 86.479497][ T5724] page dumped because: kasan: bad access detected
[ 86.485917][ T5724] page_owner tracks the page as allocated
[ 86.491633][ T5724] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5093, tgid 5093 (udevadm), ts 34957158117, free_ts 34954255317
[ 86.512647][ T5724] post_alloc_hook+0x1ec/0x220
[ 86.517416][ T5724] get_page_from_freelist+0x3607/0x3750
[ 86.522960][ T5724] __alloc_frozen_pages_noprof+0x256/0x690
[ 86.528769][ T5724] alloc_pages_mpol+0x311/0x660
[ 86.533711][ T5724] allocate_slab+0x8f/0x3a0
[ 86.538215][ T5724] ___slab_alloc+0xc35/0x14a0
[ 86.542910][ T5724] __slab_alloc+0x58/0xa0
[ 86.547260][ T5724] __kmalloc_cache_noprof+0x276/0x360
[ 86.552623][ T5724] kernfs_fop_open+0x3e0/0xd10
[ 86.557381][ T5724] do_dentry_open+0xdea/0x1960
[ 86.562152][ T5724] vfs_open+0x3b/0x370
[ 86.566254][ T5724] path_openat+0x2c7d/0x3590
[ 86.570883][ T5724] do_filp_open+0x27f/0x4e0
[ 86.575392][ T5724] do_sys_openat2+0x13e/0x1d0
[ 86.580080][ T5724] __x64_sys_openat+0x247/0x2a0
[ 86.584931][ T5724] do_syscall_64+0x82/0x160
[ 86.589446][ T5724] page last free pid 5082 tgid 5082 stack trace:
[ 86.595763][ T5724] free_frozen_pages+0xdf5/0x10b0
[ 86.600784][ T5724] __put_partials+0x15e/0x1b0
[ 86.605457][ T5724] put_cpu_partial+0x17c/0x250
[ 86.610303][ T5724] __slab_free+0x290/0x380
[ 86.614808][ T5724] qlist_free_all+0x9a/0x140
[ 86.619395][ T5724] kasan_quarantine_reduce+0x14f/0x170
[ 86.624857][ T5724] __kasan_slab_alloc+0x23/0x60
[ 86.629806][ T5724] __kmalloc_noprof+0x231/0x490
[ 86.634665][ T5724] tomoyo_realpath_from_path+0xcf/0x5e0
[ 86.640222][ T5724] tomoyo_path_perm+0x2b7/0x740
[ 86.645078][ T5724] security_inode_getattr+0x130/0x330
[ 86.650448][ T5724] vfs_getattr+0x2a/0x3a0
[ 86.654784][ T5724] vfs_statx+0x1ae/0x4f0
[ 86.659037][ T5724] vfs_fstatat+0xe5/0x130
[ 86.663361][ T5724] __x64_sys_newfstatat+0x11d/0x1a0
[ 86.668556][ T5724] do_syscall_64+0x82/0x160
[ 86.673058][ T5724]
[ 86.675373][ T5724] Memory state around the buggy address:
[ 86.680993][ T5724] ffff88803239f700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 86.689061][ T5724] ffff88803239f780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 86.697114][ T5724] >ffff88803239f800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 86.705171][ T5724] ^
[ 86.709507][ T5724] ffff88803239f880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 86.717560][ T5724] ffff88803239f900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 86.725696][ T5724] ==================================================================
[ 86.737930][ T5724] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 86.745201][ T5724] CPU: 1 UID: 0 PID: 5724 Comm: syz-executor Not tainted 6.14.0-rc5-syzkaller #0
[ 86.754377][ T5724] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[ 86.764468][ T5724] Call Trace:
[ 86.767900][ T5724]
[ 86.770829][ T5724] dump_stack_lvl+0x241/0x360
[ 86.775512][ T5724] ? __pfx_dump_stack_lvl+0x10/0x10
[ 86.780725][ T5724] ? __pfx__printk+0x10/0x10
[ 86.785318][ T5724] ? preempt_schedule+0xe1/0xf0
[ 86.790181][ T5724] ? vscnprintf+0x5d/0x90
[ 86.794532][ T5724] panic+0x349/0x880
[ 86.798424][ T5724] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 86.804584][ T5724] ? check_panic_on_warn+0x21/0xb0
[ 86.809706][ T5724] ? __pfx_panic+0x10/0x10
[ 86.814149][ T5724] ? _raw_spin_unlock_irqrestore+0x130/0x140
[ 86.820160][ T5724] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[ 86.826491][ T5724] ? print_report+0x519/0x5b0
[ 86.831193][ T5724] check_panic_on_warn+0x86/0xb0
[ 86.836138][ T5724] ? binder_add_device+0x5f/0xa0
[ 86.841077][ T5724] end_report+0x77/0x150
[ 86.845325][ T5724] kasan_report+0x154/0x180
[ 86.849848][ T5724] ? binder_add_device+0x5f/0xa0
[ 86.854814][ T5724] binder_add_device+0x5f/0xa0
[ 86.859688][ T5724] binderfs_binder_device_create+0x7bf/0x9c0
[ 86.865759][ T5724] binderfs_fill_super+0x944/0xd90
[ 86.870916][ T5724] ? __pfx_binderfs_fill_super+0x10/0x10
[ 86.876580][ T5724] ? shrinker_register+0x160/0x230
[ 86.881701][ T5724] ? sget_fc+0x909/0x9c0
[ 86.885953][ T5724] ? __pfx_set_anon_super_fc+0x10/0x10
[ 86.891432][ T5724] ? __pfx_binderfs_fill_super+0x10/0x10
[ 86.897097][ T5724] get_tree_nodev+0xb7/0x140
[ 86.901689][ T5724] vfs_get_tree+0x90/0x290
[ 86.906105][ T5724] do_new_mount+0x2be/0xb40
[ 86.910611][ T5724] ? __pfx_do_new_mount+0x10/0x10
[ 86.915640][ T5724] __se_sys_mount+0x2d6/0x3c0
[ 86.920318][ T5724] ? lockdep_hardirqs_on_prepare+0x43d/0x7a0
[ 86.926394][ T5724] ? __pfx___se_sys_mount+0x10/0x10
[ 86.931681][ T5724] ? __x64_sys_mount+0x20/0xc0
[ 86.936467][ T5724] do_syscall_64+0x82/0x160
[ 86.940977][ T5724] ? clear_bhb_loop+0x25/0x80
[ 86.945684][ T5724] ? clear_bhb_loop+0x25/0x80
[ 86.950366][ T5724] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 86.956262][ T5724] RIP: 0033:0x7f293498e90a
[ 86.960679][ T5724] 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
[ 86.980283][ T5724] RSP: 002b:00007f2934ccff68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 86.988785][ T5724] RAX: ffffffffffffffda RBX: 00007f2934a0e663 RCX: 00007f293498e90a
[ 86.996780][ T5724] RDX: 00007f2934a1dda7 RSI: 00007f2934a0e663 RDI: 00007f2934a1dda7
[ 87.004760][ T5724] RBP: 00007f2934a0e8ac R08: 0000000000000000 R09: 0000000000000100
[ 87.012727][ T5724] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f29349eb1a8
[ 87.020693][ T5724] R13: 00007f29349eb180 R14: 0000000000000009 R15: 0000000000000000
[ 87.028690][ T5724]
[ 87.032072][ T5724] Kernel Offset: disabled
[ 87.036401][ T5724] 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='/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-build2644054130=/tmp/go-build -gno-record-gcc-switches'
git status (err=)
HEAD detached at 831e3629115
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=831e3629115be4f5e68e6e0df3a5b07eed26daa4 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20250305-205027'" -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=\"831e3629115be4f5e68e6e0df3a5b07eed26daa4\"
go: downloading google.golang.org/genproto/googleapis/api v0.0.0-20250207221924-e9438ea467c6
/usr/bin/ld: /tmp/cc6BmrdI.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