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 ffff888034d66008 by task syz-executor/5857
CPU: 0 UID: 0 PID: 5857 Comm: syz-executor Not tainted 6.13.0-next-20250121-syzkaller-gf066b5a6c7a0-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: 0033:0x7faeb9f81fea
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:00007ffe70a3a428 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007faeb9ff3d49 RCX: 00007faeb9f81fea
RDX: 00007faeb9fff310 RSI: 00007faeb9ff3d49 RDI: 00007faeb9fff310
RBP: 00007faeb9ff3f58 R08: 0000000000000000 R09: 00000000000001ff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007faeb9fde068
R13: 00007faeb9fde048 R14: 0000000000000009 R15: 0000000000000000
Allocated by task 5851:
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 5851:
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:637
shrink_kill+0xa9/0x2c0 fs/dcache.c:1082
shrink_dentry_list+0x2c0/0x5b0 fs/dcache.c:1109
shrink_dcache_parent+0xcb/0x3b0
do_one_tree+0x23/0xe0 fs/dcache.c:1572
shrink_dcache_for_umount+0xb4/0x180 fs/dcache.c:1589
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 ffff888034d66000
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
freed 512-byte region [ffff888034d66000, ffff888034d66200)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x34d64
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 ffffea0000d0de00 0000000000000002
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801ac41c80 ffffea0000d0de00 0000000000000002
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000002 ffffea0000d35901 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 5219, tgid 5219 (udevd), ts 33292796869, free_ts 33231385614
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 5226 tgid 5226 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
__slab_free+0x2c2/0x380 mm/slub.c:4520
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
getname_maybe_null include/linux/fs.h:2848 [inline]
vfs_fstatat+0x3f/0x130 fs/stat.c:361
__do_sys_newfstatat fs/stat.c:530 [inline]
__se_sys_newfstatat fs/stat.c:524 [inline]
__x64_sys_newfstatat+0x117/0x190 fs/stat.c:524
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:
ffff888034d65f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff888034d65f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888034d66000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888034d66080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888034d66100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Warning: Permanently added '10.128.1.49' (ED25519) to the list of known hosts.
2025/01/21 10:34:19 ignoring optional flag "sandboxArg"="0"
2025/01/21 10:34:19 parsed 1 programs
[ 64.130006][ T5842] cgroup: Unknown subsys name 'net'
[ 64.276899][ T5842] cgroup: Unknown subsys name 'cpuset'
[ 64.284410][ T5842] cgroup: Unknown subsys name 'rlimit'
[ 65.599715][ T5842] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 68.146998][ T5851] 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.
[ 68.298591][
** replaying previous printk message **
[ 68.298591][ T5857] ==================================================================
[ 68.298621][ T5857] BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0
[ 68.298669][ T5857] Write of size 8 at addr ffff888034d66008 by task syz-executor/5857
[ 68.298683][ T5857]
[ 68.298704][ T5857] CPU: 0 UID: 0 PID: 5857 Comm: syz-executor Not tainted 6.13.0-next-20250121-syzkaller-gf066b5a6c7a0-dirty #0
[ 68.298716][ T5857] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 68.298726][ T5857] Call Trace:
[ 68.298730][ T5857]
[ 68.298735][ T5857] dump_stack_lvl+0x241/0x360
[ 68.298748][ T5857] ? __pfx_dump_stack_lvl+0x10/0x10
[ 68.298758][ T5857] ? __pfx__printk+0x10/0x10
[ 68.298768][ T5857] ? _printk+0xd5/0x120
[ 68.298776][ T5857] ? __virt_addr_valid+0x183/0x530
[ 68.298791][ T5857] ? __virt_addr_valid+0x183/0x530
[ 68.298804][ T5857] print_report+0x169/0x550
[ 68.298819][ T5857] ? __virt_addr_valid+0x183/0x530
[ 68.298832][ T5857] ? __virt_addr_valid+0x183/0x530
[ 68.298844][ T5857] ? __virt_addr_valid+0x45f/0x530
[ 68.298857][ T5857] ? __phys_addr+0xba/0x170
[ 68.298869][ T5857] ? binder_add_device+0x5f/0xa0
[ 68.298882][ T5857] kasan_report+0x143/0x180
[ 68.298895][ T5857] ? binder_add_device+0x5f/0xa0
[ 68.298909][ T5857] binder_add_device+0x5f/0xa0
[ 68.298922][ T5857] binderfs_binder_device_create+0x7bf/0x9c0
[ 68.298936][ T5857] binderfs_fill_super+0x944/0xd90
[ 68.298950][ T5857] ? __pfx_binderfs_fill_super+0x10/0x10
[ 68.298967][ T5857] ? shrinker_register+0x160/0x230
[ 68.298980][ T5857] ? sget_fc+0x909/0x9c0
[ 68.298992][ T5857] ? __pfx_set_anon_super_fc+0x10/0x10
[ 68.299004][ T5857] ? __pfx_binderfs_fill_super+0x10/0x10
[ 68.299016][ T5857] get_tree_nodev+0xb7/0x140
[ 68.299028][ T5857] vfs_get_tree+0x90/0x2b0
[ 68.299040][ T5857] do_new_mount+0x2be/0xb40
[ 68.299051][ T5857] ? __pfx_do_new_mount+0x10/0x10
[ 68.299061][ T5857] __se_sys_mount+0x2d6/0x3c0
[ 68.299070][ T5857] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 68.299084][ T5857] ? __pfx___se_sys_mount+0x10/0x10
[ 68.299094][ T5857] ? do_syscall_64+0x100/0x230
[ 68.299112][ T5857] ? __x64_sys_mount+0x20/0xc0
[ 68.299122][ T5857] do_syscall_64+0xf3/0x230
[ 68.299131][ T5857] ? clear_bhb_loop+0x35/0x90
[ 68.299146][ T5857] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 68.299161][ T5857] RIP: 0033:0x7faeb9f81fea
[ 68.299173][ T5857] 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
[ 68.299180][ T5857] RSP: 002b:00007ffe70a3a428 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 68.299192][ T5857] RAX: ffffffffffffffda RBX: 00007faeb9ff3d49 RCX: 00007faeb9f81fea
[ 68.299199][ T5857] RDX: 00007faeb9fff310 RSI: 00007faeb9ff3d49 RDI: 00007faeb9fff310
[ 68.299205][ T5857] RBP: 00007faeb9ff3f58 R08: 0000000000000000 R09: 00000000000001ff
[ 68.299211][ T5857] R10: 0000000000000000 R11: 0000000000000246 R12: 00007faeb9fde068
[ 68.299217][ T5857] R13: 00007faeb9fde048 R14: 0000000000000009 R15: 0000000000000000
[ 68.299226][ T5857]
[ 68.299230][ T5857]
[ 68.299406][ T5857] Allocated by task 5851:
[ 68.299417][ T5857] kasan_save_track+0x3f/0x80
[ 68.299435][ T5857] __kasan_kmalloc+0x98/0xb0
[ 68.299451][ T5857] __kmalloc_cache_noprof+0x243/0x390
[ 68.299467][ T5857] binderfs_binder_device_create+0x16c/0x9c0
[ 68.299484][ T5857] binderfs_fill_super+0x944/0xd90
[ 68.299501][ T5857] get_tree_nodev+0xb7/0x140
[ 68.299517][ T5857] vfs_get_tree+0x90/0x2b0
[ 68.299533][ T5857] do_new_mount+0x2be/0xb40
[ 68.299546][ T5857] __se_sys_mount+0x2d6/0x3c0
[ 68.299560][ T5857] do_syscall_64+0xf3/0x230
[ 68.299573][ T5857] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 68.299590][ T5857]
[ 68.299597][ T5857] Freed by task 5851:
[ 68.299607][ T5857] kasan_save_track+0x3f/0x80
[ 68.299624][ T5857] kasan_save_free_info+0x40/0x50
[ 68.299640][ T5857] __kasan_slab_free+0x59/0x70
[ 68.299656][ T5857] kfree+0x196/0x430
[ 68.299669][ T5857] evict+0x4e8/0x9a0
[ 68.299686][ T5857] __dentry_kill+0x20d/0x630
[ 68.299700][ T5857] shrink_kill+0xa9/0x2c0
[ 68.299715][ T5857] shrink_dentry_list+0x2c0/0x5b0
[ 68.299729][ T5857] shrink_dcache_parent+0xcb/0x3b0
[ 68.299744][ T5857] do_one_tree+0x23/0xe0
[ 68.299759][ T5857] shrink_dcache_for_umount+0xb4/0x180
[ 68.299775][ T5857] generic_shutdown_super+0x6a/0x2d0
[ 68.299790][ T5857] kill_litter_super+0x76/0xb0
[ 68.299806][ T5857] binderfs_kill_super+0x44/0x90
[ 68.299823][ T5857] deactivate_locked_super+0xc4/0x130
[ 68.299838][ T5857] cleanup_mnt+0x41f/0x4b0
[ 68.299852][ T5857] task_work_run+0x24f/0x310
[ 68.299873][ T5857] do_exit+0xa2a/0x28e0
[ 68.299890][ T5857] do_group_exit+0x207/0x2c0
[ 68.299906][ T5857] get_signal+0x16b2/0x1750
[ 68.299920][ T5857] arch_do_signal_or_restart+0x96/0x860
[ 68.299937][ T5857] syscall_exit_to_user_mode+0xce/0x340
[ 68.299951][ T5857] do_syscall_64+0x100/0x230
[ 68.299965][ T5857] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 68.299982][ T5857]
[ 68.299989][ T5857] The buggy address belongs to the object at ffff888034d66000
[ 68.299989][ T5857] which belongs to the cache kmalloc-512 of size 512
[ 68.300003][ T5857] The buggy address is located 8 bytes inside of
[ 68.300003][ T5857] freed 512-byte region [ffff888034d66000, ffff888034d66200)
[ 68.300018][ T5857]
[ 68.300026][ T5857] The buggy address belongs to the physical page:
[ 68.300036][ T5857] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x34d64
[ 68.300058][ T5857] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 68.300072][ T5857] flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
[ 68.300089][ T5857] page_type: f5(slab)
[ 68.300104][ T5857] raw: 00fff00000000040 ffff88801ac41c80 ffffea0000d0de00 0000000000000002
[ 68.300123][ T5857] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 68.300137][ T5857] head: 00fff00000000040 ffff88801ac41c80 ffffea0000d0de00 0000000000000002
[ 68.300150][ T5857] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 68.300163][ T5857] head: 00fff00000000002 ffffea0000d35901 ffffffffffffffff 0000000000000000
[ 68.300176][ T5857] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[ 68.300186][ T5857] page dumped because: kasan: bad access detected
[ 68.300201][ T5857] page_owner tracks the page as allocated
[ 68.300210][ T5857] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5219, tgid 5219 (udevd), ts 33292796869, free_ts 33231385614
[ 68.300232][ T5857] post_alloc_hook+0x1f4/0x240
[ 68.300250][ T5857] get_page_from_freelist+0x365c/0x37a0
[ 68.300267][ T5857] __alloc_frozen_pages_noprof+0x292/0x710
[ 68.300284][ T5857] alloc_pages_mpol+0x311/0x660
[ 68.300298][ T5857] allocate_slab+0x8f/0x3a0
[ 68.300315][ T5857] ___slab_alloc+0xc27/0x14a0
[ 68.300330][ T5857] __slab_alloc+0x58/0xa0
[ 68.300345][ T5857] __kmalloc_cache_noprof+0x27b/0x390
[ 68.300359][ T5857] kernfs_fop_open+0x3e0/0xd10
[ 68.300376][ T5857] do_dentry_open+0xdec/0x1960
[ 68.300390][ T5857] vfs_open+0x3b/0x370
[ 68.300402][ T5857] path_openat+0x2c81/0x3590
[ 68.300419][ T5857] do_filp_open+0x27f/0x4e0
[ 68.300434][ T5857] do_sys_openat2+0x13e/0x1d0
[ 68.300448][ T5857] __x64_sys_openat+0x247/0x2a0
[ 68.300462][ T5857] do_syscall_64+0xf3/0x230
[ 68.300476][ T5857] page last free pid 5226 tgid 5226 stack trace:
[ 68.300487][ T5857] free_frozen_pages+0xe0d/0x10e0
[ 68.300502][ T5857] __slab_free+0x2c2/0x380
[ 68.300518][ T5857] qlist_free_all+0x9a/0x140
[ 68.300534][ T5857] kasan_quarantine_reduce+0x14f/0x170
[ 68.300551][ T5857] __kasan_slab_alloc+0x23/0x80
[ 68.300568][ T5857] kmem_cache_alloc_noprof+0x1d9/0x380
[ 68.300582][ T5857] getname_flags+0xb7/0x540
[ 68.300596][ T5857] vfs_fstatat+0x3f/0x130
[ 68.300610][ T5857] __x64_sys_newfstatat+0x117/0x190
[ 68.300625][ T5857] do_syscall_64+0xf3/0x230
[ 68.300638][ T5857] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 68.300655][ T5857]
[ 68.300663][ T5857] Memory state around the buggy address:
[ 68.300673][ T5857] ffff888034d65f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 68.300686][ T5857] ffff888034d65f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 68.300697][ T5857] >ffff888034d66000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 68.300707][ T5857] ^
[ 68.300717][ T5857] ffff888034d66080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 68.300728][ T5857] ffff888034d66100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 68.300738][ T5857] ==================================================================
[ 68.301205][ T5857] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 69.142055][ T5857] CPU: 0 UID: 0 PID: 5857 Comm: syz-executor Not tainted 6.13.0-next-20250121-syzkaller-gf066b5a6c7a0-dirty #0
[ 69.154114][ T5857] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 69.164162][ T5857] Call Trace:
[ 69.167524][ T5857]
[ 69.170450][ T5857] dump_stack_lvl+0x241/0x360
[ 69.175125][ T5857] ? __pfx_dump_stack_lvl+0x10/0x10
[ 69.180327][ T5857] ? __pfx__printk+0x10/0x10
[ 69.184908][ T5857] ? preempt_schedule+0xe1/0xf0
[ 69.189757][ T5857] ? vscnprintf+0x5d/0x90
[ 69.194169][ T5857] panic+0x349/0x880
[ 69.198142][ T5857] ? check_panic_on_warn+0x21/0xb0
[ 69.203251][ T5857] ? __pfx_panic+0x10/0x10
[ 69.207668][ T5857] ? _raw_spin_unlock_irqrestore+0x130/0x140
[ 69.213734][ T5857] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[ 69.220084][ T5857] ? print_report+0x502/0x550
[ 69.224766][ T5857] check_panic_on_warn+0x86/0xb0
[ 69.229704][ T5857] ? binder_add_device+0x5f/0xa0
[ 69.234644][ T5857] end_report+0x77/0x160
[ 69.238883][ T5857] kasan_report+0x154/0x180
[ 69.243414][ T5857] ? binder_add_device+0x5f/0xa0
[ 69.248382][ T5857] binder_add_device+0x5f/0xa0
[ 69.253376][ T5857] binderfs_binder_device_create+0x7bf/0x9c0
[ 69.259479][ T5857] binderfs_fill_super+0x944/0xd90
[ 69.264657][ T5857] ? __pfx_binderfs_fill_super+0x10/0x10
[ 69.270302][ T5857] ? shrinker_register+0x160/0x230
[ 69.275420][ T5857] ? sget_fc+0x909/0x9c0
[ 69.279659][ T5857] ? __pfx_set_anon_super_fc+0x10/0x10
[ 69.285122][ T5857] ? __pfx_binderfs_fill_super+0x10/0x10
[ 69.290839][ T5857] get_tree_nodev+0xb7/0x140
[ 69.295430][ T5857] vfs_get_tree+0x90/0x2b0
[ 69.299846][ T5857] do_new_mount+0x2be/0xb40
[ 69.304345][ T5857] ? __pfx_do_new_mount+0x10/0x10
[ 69.309362][ T5857] __se_sys_mount+0x2d6/0x3c0
[ 69.314032][ T5857] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 69.320186][ T5857] ? __pfx___se_sys_mount+0x10/0x10
[ 69.325380][ T5857] ? do_syscall_64+0x100/0x230
[ 69.330136][ T5857] ? __x64_sys_mount+0x20/0xc0
[ 69.334888][ T5857] do_syscall_64+0xf3/0x230
[ 69.339407][ T5857] ? clear_bhb_loop+0x35/0x90
[ 69.344085][ T5857] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 69.349980][ T5857] RIP: 0033:0x7faeb9f81fea
[ 69.354493][ T5857] 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
[ 69.374544][ T5857] RSP: 002b:00007ffe70a3a428 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 69.382981][ T5857] RAX: ffffffffffffffda RBX: 00007faeb9ff3d49 RCX: 00007faeb9f81fea
[ 69.390951][ T5857] RDX: 00007faeb9fff310 RSI: 00007faeb9ff3d49 RDI: 00007faeb9fff310
[ 69.398930][ T5857] RBP: 00007faeb9ff3f58 R08: 0000000000000000 R09: 00000000000001ff
[ 69.406896][ T5857] R10: 0000000000000000 R11: 0000000000000246 R12: 00007faeb9fde068
[ 69.414854][ T5857] R13: 00007faeb9fde048 R14: 0000000000000009 R15: 0000000000000000
[ 69.422922][ T5857]
[ 70.555473][ T5857] Shutting down cpus with NMI
[ 70.560672][ T5857] Kernel Offset: disabled
[ 70.565043][ T5857] 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-build762829333=/tmp/go-build -gno-record-gcc-switches'
git status (err=)
HEAD detached at 689146651c
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=689146651cb695ec7836080377ad32933a0b9bce -X 'github.com/google/syzkaller/prog.gitRevisionDate=20241129-143606'" "-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=\"689146651cb695ec7836080377ad32933a0b9bce\"
/usr/bin/ld: /tmp/cceY33tf.o: in function `test_cover_filter()':
executor.cc:(.text+0x14f8b): warning: the use of `tempnam' is dangerous, better use `mkstemp'
/usr/bin/ld: /tmp/cceY33tf.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