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 ffff888030126408 by task syz-executor/5853
CPU: 1 UID: 0 PID: 5853 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: 0033:0x7f16b75874ca
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:00007ffc399c89c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f16b7601ecb RCX: 00007f16b75874ca
RDX: 00007f16b760ec27 RSI: 00007f16b7601ecb RDI: 00007f16b760ec27
RBP: 00007f16b76020c3 R08: 0000000000000000 R09: 00000000000001ff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f16b75e41c8
R13: 00007f16b75e41a8 R14: 0000000000000009 R15: 0000000000000000
Allocated by task 5847:
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 5847:
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 ffff888030126400
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
freed 512-byte region [ffff888030126400, ffff888030126600)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x30124
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 ffffea0000c04901 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 1, tgid 1 (swapper/0), ts 27989455129, free_ts 27735557363
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+0x45e/0x4f0 security/tomoyo/file.c:780
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 1 tgid 1 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
stack_depot_save_flags+0x7c6/0x940 lib/stackdepot.c:674
kasan_save_stack mm/kasan/common.c:48 [inline]
kasan_save_track+0x51/0x80 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]
kmem_cache_free+0x195/0x410 mm/slub.c:4711
__merge_or_add_vmap_area mm/vmalloc.c:1401 [inline]
merge_or_add_vmap_area mm/vmalloc.c:1451 [inline]
decay_va_pool_node+0x849/0xfc0 mm/vmalloc.c:2159
__purge_vmap_area_lazy+0x15d/0xae0 mm/vmalloc.c:2263
_vm_unmap_aliases+0x79d/0x840 mm/vmalloc.c:2899
change_page_attr_set_clr+0x2fe/0xdb0 arch/x86/mm/pat/set_memory.c:1879
change_page_attr_set arch/x86/mm/pat/set_memory.c:1920 [inline]
set_memory_nx+0xf2/0x130 arch/x86/mm/pat/set_memory.c:2108
mark_rodata_ro+0xac/0xf0 arch/x86/mm/init_64.c:1407
mark_readonly init/main.c:1431 [inline]
kernel_init+0x5d/0x2b0 init/main.c:1467
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:
ffff888030126300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff888030126380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888030126400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888030126480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888030126500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Warning: Permanently added '10.128.0.130' (ED25519) to the list of known hosts.
2025/02/01 06:03:48 ignoring optional flag "sandboxArg"="0"
2025/02/01 06:03:49 parsed 1 programs
[ 85.744314][ T5838] cgroup: Unknown subsys name 'net'
[ 85.854339][ T5838] cgroup: Unknown subsys name 'cpuset'
[ 85.864789][ T5838] cgroup: Unknown subsys name 'rlimit'
[ 87.479491][ T5838] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 90.456930][ T5847] 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.
[ 90.700252][ T5853] ==================================================================
[ 90.708435][ T5853] BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0
[ 90.716198][ T5853] Write of size 8 at addr ffff888030126408 by task syz-executor/5853
[ 90.724362][ T5853]
[ 90.726715][ T5853] CPU: 1 UID: 0 PID: 5853 Comm: syz-executor Not tainted 6.13.0-next-20250131-syzkaller-10663-gdf4b2bbff898-dirty #0
[ 90.726728][ T5853] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 90.726740][ T5853] Call Trace:
[ 90.726747][ T5853]
[ 90.726752][ T5853] dump_stack_lvl+0x241/0x360
[ 90.726768][ T5853] ? __pfx_dump_stack_lvl+0x10/0x10
[ 90.726777][ T5853] ? __pfx__printk+0x10/0x10
[ 90.726787][ T5853] ? _printk+0xd5/0x120
[ 90.726795][ T5853] ? __virt_addr_valid+0x183/0x530
[ 90.726809][ T5853] ? __virt_addr_valid+0x183/0x530
[ 90.726822][ T5853] print_report+0x169/0x550
[ 90.726836][ T5853] ? __virt_addr_valid+0x183/0x530
[ 90.726848][ T5853] ? __virt_addr_valid+0x183/0x530
[ 90.726859][ T5853] ? __virt_addr_valid+0x45f/0x530
[ 90.726871][ T5853] ? __phys_addr+0xba/0x170
[ 90.726883][ T5853] ? binder_add_device+0x5f/0xa0
[ 90.726893][ T5853] kasan_report+0x143/0x180
[ 90.726902][ T5853] ? binder_add_device+0x5f/0xa0
[ 90.726912][ T5853] binder_add_device+0x5f/0xa0
[ 90.726922][ T5853] binderfs_binder_device_create+0x7bf/0x9c0
[ 90.726938][ T5853] binderfs_fill_super+0x944/0xd90
[ 90.726953][ T5853] ? __pfx_binderfs_fill_super+0x10/0x10
[ 90.726973][ T5853] ? shrinker_register+0x160/0x230
[ 90.726985][ T5853] ? sget_fc+0x909/0x9c0
[ 90.726998][ T5853] ? __pfx_set_anon_super_fc+0x10/0x10
[ 90.727009][ T5853] ? __pfx_binderfs_fill_super+0x10/0x10
[ 90.727028][ T5853] get_tree_nodev+0xb7/0x140
[ 90.727040][ T5853] vfs_get_tree+0x90/0x2b0
[ 90.727053][ T5853] do_new_mount+0x2be/0xb40
[ 90.727064][ T5853] ? __pfx_do_new_mount+0x10/0x10
[ 90.727076][ T5853] __se_sys_mount+0x2d6/0x3c0
[ 90.727085][ T5853] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 90.727099][ T5853] ? __pfx___se_sys_mount+0x10/0x10
[ 90.727109][ T5853] ? do_syscall_64+0x100/0x230
[ 90.727120][ T5853] ? __x64_sys_mount+0x20/0xc0
[ 90.727130][ T5853] do_syscall_64+0xf3/0x230
[ 90.727140][ T5853] ? clear_bhb_loop+0x35/0x90
[ 90.727154][ T5853] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 90.727166][ T5853] RIP: 0033:0x7f16b75874ca
[ 90.727180][ T5853] 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
[ 90.727187][ T5853] RSP: 002b:00007ffc399c89c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 90.727198][ T5853] RAX: ffffffffffffffda RBX: 00007f16b7601ecb RCX: 00007f16b75874ca
[ 90.727205][ T5853] RDX: 00007f16b760ec27 RSI: 00007f16b7601ecb RDI: 00007f16b760ec27
[ 90.727212][ T5853] RBP: 00007f16b76020c3 R08: 0000000000000000 R09: 00000000000001ff
[ 90.727218][ T5853] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f16b75e41c8
[ 90.727223][ T5853] R13: 00007f16b75e41a8 R14: 0000000000000009 R15: 0000000000000000
[ 90.727233][ T5853]
[ 90.727236][ T5853]
[ 91.001952][ T5853] Allocated by task 5847:
[ 91.006280][ T5853] kasan_save_track+0x3f/0x80
[ 91.010946][ T5853] __kasan_kmalloc+0x98/0xb0
[ 91.015516][ T5853] __kmalloc_cache_noprof+0x243/0x390
[ 91.020870][ T5853] binderfs_binder_device_create+0x16c/0x9c0
[ 91.026832][ T5853] binderfs_fill_super+0x944/0xd90
[ 91.031929][ T5853] get_tree_nodev+0xb7/0x140
[ 91.036498][ T5853] vfs_get_tree+0x90/0x2b0
[ 91.040923][ T5853] do_new_mount+0x2be/0xb40
[ 91.045403][ T5853] __se_sys_mount+0x2d6/0x3c0
[ 91.050058][ T5853] do_syscall_64+0xf3/0x230
[ 91.054541][ T5853] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 91.060415][ T5853]
[ 91.062719][ T5853] Freed by task 5847:
[ 91.066675][ T5853] kasan_save_track+0x3f/0x80
[ 91.071351][ T5853] kasan_save_free_info+0x40/0x50
[ 91.076356][ T5853] __kasan_slab_free+0x59/0x70
[ 91.081122][ T5853] kfree+0x196/0x430
[ 91.085257][ T5853] evict+0x4e8/0x9a0
[ 91.089147][ T5853] __dentry_kill+0x20d/0x630
[ 91.093720][ T5853] shrink_kill+0xa9/0x2c0
[ 91.098042][ T5853] shrink_dentry_list+0x2c0/0x5b0
[ 91.103050][ T5853] shrink_dcache_parent+0xcb/0x3b0
[ 91.108162][ T5853] do_one_tree+0x23/0xe0
[ 91.112388][ T5853] shrink_dcache_for_umount+0xb4/0x180
[ 91.117842][ T5853] generic_shutdown_super+0x6a/0x2d0
[ 91.123107][ T5853] kill_litter_super+0x76/0xb0
[ 91.127867][ T5853] binderfs_kill_super+0x44/0x90
[ 91.132906][ T5853] deactivate_locked_super+0xc4/0x130
[ 91.138267][ T5853] cleanup_mnt+0x41f/0x4b0
[ 91.142664][ T5853] task_work_run+0x24f/0x310
[ 91.147234][ T5853] do_exit+0xa2a/0x28e0
[ 91.151372][ T5853] do_group_exit+0x207/0x2c0
[ 91.155943][ T5853] get_signal+0x16b2/0x1750
[ 91.160423][ T5853] arch_do_signal_or_restart+0x96/0x860
[ 91.165948][ T5853] syscall_exit_to_user_mode+0xce/0x340
[ 91.171470][ T5853] do_syscall_64+0x100/0x230
[ 91.176049][ T5853] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 91.181922][ T5853]
[ 91.184238][ T5853] The buggy address belongs to the object at ffff888030126400
[ 91.184238][ T5853] which belongs to the cache kmalloc-512 of size 512
[ 91.198271][ T5853] The buggy address is located 8 bytes inside of
[ 91.198271][ T5853] freed 512-byte region [ffff888030126400, ffff888030126600)
[ 91.212064][ T5853]
[ 91.214375][ T5853] The buggy address belongs to the physical page:
[ 91.221031][ T5853] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x30124
[ 91.229783][ T5853] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 91.238365][ T5853] flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
[ 91.245896][ T5853] page_type: f5(slab)
[ 91.249877][ T5853] raw: 00fff00000000040 ffff88801ac41c80 dead000000000100 dead000000000122
[ 91.258463][ T5853] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 91.267031][ T5853] head: 00fff00000000040 ffff88801ac41c80 dead000000000100 dead000000000122
[ 91.275680][ T5853] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 91.284337][ T5853] head: 00fff00000000002 ffffea0000c04901 ffffffffffffffff 0000000000000000
[ 91.293008][ T5853] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[ 91.301661][ T5853] page dumped because: kasan: bad access detected
[ 91.308062][ T5853] page_owner tracks the page as allocated
[ 91.313753][ T5853] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 27989455129, free_ts 27735557363
[ 91.333523][ T5853] post_alloc_hook+0x1f4/0x240
[ 91.338276][ T5853] get_page_from_freelist+0x365c/0x37a0
[ 91.343800][ T5853] __alloc_frozen_pages_noprof+0x292/0x710
[ 91.349601][ T5853] alloc_pages_mpol+0x311/0x660
[ 91.354430][ T5853] allocate_slab+0x8f/0x3a0
[ 91.358918][ T5853] ___slab_alloc+0xc27/0x14a0
[ 91.363594][ T5853] __slab_alloc+0x58/0xa0
[ 91.367900][ T5853] __kmalloc_noprof+0x2e6/0x4c0
[ 91.372748][ T5853] tomoyo_init_log+0x1b3d/0x2050
[ 91.377678][ T5853] tomoyo_supervisor+0x399/0x1a10
[ 91.382683][ T5853] tomoyo_path_permission+0x243/0x360
[ 91.388039][ T5853] tomoyo_check_open_permission+0x45e/0x4f0
[ 91.393915][ T5853] security_file_open+0xac/0x250
[ 91.398844][ T5853] do_dentry_open+0x320/0x1960
[ 91.403593][ T5853] vfs_open+0x3b/0x370
[ 91.407644][ T5853] path_openat+0x2c81/0x3590
[ 91.412213][ T5853] page last free pid 1 tgid 1 stack trace:
[ 91.417989][ T5853] free_frozen_pages+0xe0d/0x10e0
[ 91.423014][ T5853] stack_depot_save_flags+0x7c6/0x940
[ 91.428368][ T5853] kasan_save_track+0x51/0x80
[ 91.433025][ T5853] kasan_save_free_info+0x40/0x50
[ 91.438043][ T5853] __kasan_slab_free+0x59/0x70
[ 91.442792][ T5853] kmem_cache_free+0x195/0x410
[ 91.447634][ T5853] decay_va_pool_node+0x849/0xfc0
[ 91.452816][ T5853] __purge_vmap_area_lazy+0x15d/0xae0
[ 91.458188][ T5853] _vm_unmap_aliases+0x79d/0x840
[ 91.463363][ T5853] change_page_attr_set_clr+0x2fe/0xdb0
[ 91.468972][ T5853] set_memory_nx+0xf2/0x130
[ 91.473483][ T5853] mark_rodata_ro+0xac/0xf0
[ 91.477985][ T5853] kernel_init+0x5d/0x2b0
[ 91.482308][ T5853] ret_from_fork+0x4b/0x80
[ 91.486736][ T5853] ret_from_fork_asm+0x1a/0x30
[ 91.491501][ T5853]
[ 91.493804][ T5853] Memory state around the buggy address:
[ 91.499431][ T5853] ffff888030126300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 91.507478][ T5853] ffff888030126380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 91.515556][ T5853] >ffff888030126400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 91.523604][ T5853] ^
[ 91.527905][ T5853] ffff888030126480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 91.536113][ T5853] ffff888030126500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 91.544165][ T5853] ==================================================================
[ 91.553329][ T5853] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 91.560542][ T5853] CPU: 1 UID: 0 PID: 5853 Comm: syz-executor Not tainted 6.13.0-next-20250131-syzkaller-10663-gdf4b2bbff898-dirty #0
[ 91.572773][ T5853] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 91.582908][ T5853] Call Trace:
[ 91.586235][ T5853]
[ 91.589155][ T5853] dump_stack_lvl+0x241/0x360
[ 91.593825][ T5853] ? __pfx_dump_stack_lvl+0x10/0x10
[ 91.599013][ T5853] ? __pfx__printk+0x10/0x10
[ 91.603778][ T5853] ? preempt_schedule+0xe1/0xf0
[ 91.608618][ T5853] ? vscnprintf+0x5d/0x90
[ 91.612941][ T5853] panic+0x349/0x880
[ 91.616825][ T5853] ? check_panic_on_warn+0x21/0xb0
[ 91.621940][ T5853] ? __pfx_panic+0x10/0x10
[ 91.626344][ T5853] ? _raw_spin_unlock_irqrestore+0x130/0x140
[ 91.632339][ T5853] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[ 91.638679][ T5853] ? print_report+0x502/0x550
[ 91.643454][ T5853] check_panic_on_warn+0x86/0xb0
[ 91.648392][ T5853] ? binder_add_device+0x5f/0xa0
[ 91.653320][ T5853] end_report+0x77/0x160
[ 91.657557][ T5853] kasan_report+0x154/0x180
[ 91.662046][ T5853] ? binder_add_device+0x5f/0xa0
[ 91.666979][ T5853] binder_add_device+0x5f/0xa0
[ 91.671734][ T5853] binderfs_binder_device_create+0x7bf/0x9c0
[ 91.677714][ T5853] binderfs_fill_super+0x944/0xd90
[ 91.682828][ T5853] ? __pfx_binderfs_fill_super+0x10/0x10
[ 91.688461][ T5853] ? shrinker_register+0x160/0x230
[ 91.693567][ T5853] ? sget_fc+0x909/0x9c0
[ 91.697802][ T5853] ? __pfx_set_anon_super_fc+0x10/0x10
[ 91.703263][ T5853] ? __pfx_binderfs_fill_super+0x10/0x10
[ 91.708987][ T5853] get_tree_nodev+0xb7/0x140
[ 91.713658][ T5853] vfs_get_tree+0x90/0x2b0
[ 91.718071][ T5853] do_new_mount+0x2be/0xb40
[ 91.722749][ T5853] ? __pfx_do_new_mount+0x10/0x10
[ 91.727773][ T5853] __se_sys_mount+0x2d6/0x3c0
[ 91.732440][ T5853] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 91.738440][ T5853] ? __pfx___se_sys_mount+0x10/0x10
[ 91.743671][ T5853] ? do_syscall_64+0x100/0x230
[ 91.748539][ T5853] ? __x64_sys_mount+0x20/0xc0
[ 91.753302][ T5853] do_syscall_64+0xf3/0x230
[ 91.757910][ T5853] ? clear_bhb_loop+0x35/0x90
[ 91.762609][ T5853] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 91.768507][ T5853] RIP: 0033:0x7f16b75874ca
[ 91.772928][ T5853] 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
[ 91.792612][ T5853] RSP: 002b:00007ffc399c89c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 91.801205][ T5853] RAX: ffffffffffffffda RBX: 00007f16b7601ecb RCX: 00007f16b75874ca
[ 91.809164][ T5853] RDX: 00007f16b760ec27 RSI: 00007f16b7601ecb RDI: 00007f16b760ec27
[ 91.817119][ T5853] RBP: 00007f16b76020c3 R08: 0000000000000000 R09: 00000000000001ff
[ 91.825104][ T5853] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f16b75e41c8
[ 91.833082][ T5853] R13: 00007f16b75e41a8 R14: 0000000000000009 R15: 0000000000000000
[ 91.841133][ T5853]
[ 91.844443][ T5853] Kernel Offset: disabled
[ 91.848858][ T5853] 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-build2279019179=/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/ccXosM0c.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