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 ffff88802859c808 by task syz-executor/5833
CPU: 1 UID: 0 PID: 5833 Comm: syz-executor Not tainted 6.13.0-syzkaller-09030-g6d61a53dd6f5 #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: 0033:0x7fad12d874ca
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:00007ffebb95b458 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fad12e01ecb RCX: 00007fad12d874ca
RDX: 00007fad12e0ec27 RSI: 00007fad12e01ecb RDI: 00007fad12e0ec27
RBP: 00007fad12e020c3 R08: 0000000000000000 R09: 00000000000001ff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fad12de41c8
R13: 00007fad12de41a8 R14: 0000000000000009 R15: 0000000000000000
Allocated by task 5827:
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 5827:
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:625
shrink_kill+0xa9/0x2c0 fs/dcache.c:1070
shrink_dentry_list+0x2c0/0x5b0 fs/dcache.c:1097
shrink_dcache_parent+0xcb/0x3b0
do_one_tree+0x23/0xe0 fs/dcache.c:1560
shrink_dcache_for_umount+0xb4/0x180 fs/dcache.c:1577
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 ffff88802859c800
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
freed 512-byte region [ffff88802859c800, ffff88802859ca00)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2859c
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
anon flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801ac41c80 0000000000000000 dead000000000001
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801ac41c80 0000000000000000 dead000000000001
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000002 ffffea0000a16701 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 5209, tgid 5209 (udevadm), ts 24699096378, free_ts 24683413555
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+0x3651/0x37a0 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:3828 [inline]
path_openat+0x2c74/0x3580 fs/namei.c:3987
do_filp_open+0x27f/0x4e0 fs/namei.c:4014
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 5208 tgid 5208 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_frozen_pages+0xe04/0x10e0 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
do_sys_openat2+0xd2/0x1d0 fs/open.c:1421
do_sys_open fs/open.c:1442 [inline]
__do_sys_openat fs/open.c:1458 [inline]
__se_sys_openat fs/open.c:1453 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1453
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Memory state around the buggy address:
ffff88802859c700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88802859c780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88802859c800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88802859c880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88802859c900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Warning: Permanently added '10.128.10.27' (ED25519) to the list of known hosts.
2025/01/28 07:30:15 ignoring optional flag "sandboxArg"="0"
2025/01/28 07:30:15 parsed 1 programs
[ 65.403237][ T5819] cgroup: Unknown subsys name 'net'
[ 65.533700][ T5819] cgroup: Unknown subsys name 'cpuset'
[ 65.541866][ T5819] cgroup: Unknown subsys name 'rlimit'
[ 66.915851][ T5819] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 69.383064][ T5827] 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.
[ 69.657698][ T5833] ==================================================================
[ 69.665955][ T5833] BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0
[ 69.673688][ T5833] Write of size 8 at addr ffff88802859c808 by task syz-executor/5833
[ 69.681733][ T5833]
[ 69.684149][ T5833] CPU: 1 UID: 0 PID: 5833 Comm: syz-executor Not tainted 6.13.0-syzkaller-09030-g6d61a53dd6f5 #0
[ 69.684161][ T5833] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 69.684170][ T5833] Call Trace:
[ 69.684174][ T5833]
[ 69.684179][ T5833] dump_stack_lvl+0x241/0x360
[ 69.684192][ T5833] ? __pfx_dump_stack_lvl+0x10/0x10
[ 69.684201][ T5833] ? __pfx__printk+0x10/0x10
[ 69.684215][ T5833] ? _printk+0xd5/0x120
[ 69.684227][ T5833] ? __virt_addr_valid+0x183/0x530
[ 69.684241][ T5833] ? __virt_addr_valid+0x183/0x530
[ 69.684253][ T5833] print_report+0x169/0x550
[ 69.684264][ T5833] ? __virt_addr_valid+0x183/0x530
[ 69.684276][ T5833] ? __virt_addr_valid+0x183/0x530
[ 69.684288][ T5833] ? __virt_addr_valid+0x45f/0x530
[ 69.684300][ T5833] ? __phys_addr+0xba/0x170
[ 69.684312][ T5833] ? binder_add_device+0x5f/0xa0
[ 69.684324][ T5833] kasan_report+0x143/0x180
[ 69.684334][ T5833] ? binder_add_device+0x5f/0xa0
[ 69.684347][ T5833] binder_add_device+0x5f/0xa0
[ 69.684358][ T5833] binderfs_binder_device_create+0x7bf/0x9c0
[ 69.684371][ T5833] binderfs_fill_super+0x944/0xd90
[ 69.684383][ T5833] ? __pfx_binderfs_fill_super+0x10/0x10
[ 69.684398][ T5833] ? shrinker_register+0x160/0x230
[ 69.684413][ T5833] ? sget_fc+0x909/0x9c0
[ 69.684427][ T5833] ? __pfx_set_anon_super_fc+0x10/0x10
[ 69.684435][ T5833] ? __pfx_binderfs_fill_super+0x10/0x10
[ 69.684446][ T5833] get_tree_nodev+0xb7/0x140
[ 69.684455][ T5833] vfs_get_tree+0x90/0x2b0
[ 69.684465][ T5833] do_new_mount+0x2be/0xb40
[ 69.684477][ T5833] ? __pfx_do_new_mount+0x10/0x10
[ 69.684489][ T5833] __se_sys_mount+0x2d6/0x3c0
[ 69.684501][ T5833] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 69.684514][ T5833] ? __pfx___se_sys_mount+0x10/0x10
[ 69.684525][ T5833] ? do_syscall_64+0x100/0x230
[ 69.684540][ T5833] ? __x64_sys_mount+0x20/0xc0
[ 69.684551][ T5833] do_syscall_64+0xf3/0x230
[ 69.684564][ T5833] ? clear_bhb_loop+0x35/0x90
[ 69.684578][ T5833] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 69.684592][ T5833] RIP: 0033:0x7fad12d874ca
[ 69.684606][ T5833] 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
[ 69.684614][ T5833] RSP: 002b:00007ffebb95b458 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 69.684625][ T5833] RAX: ffffffffffffffda RBX: 00007fad12e01ecb RCX: 00007fad12d874ca
[ 69.684632][ T5833] RDX: 00007fad12e0ec27 RSI: 00007fad12e01ecb RDI: 00007fad12e0ec27
[ 69.684638][ T5833] RBP: 00007fad12e020c3 R08: 0000000000000000 R09: 00000000000001ff
[ 69.684644][ T5833] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fad12de41c8
[ 69.684650][ T5833] R13: 00007fad12de41a8 R14: 0000000000000009 R15: 0000000000000000
[ 69.684658][ T5833]
[ 69.684661][ T5833]
[ 69.957258][ T5833] Allocated by task 5827:
[ 69.962181][ T5833] kasan_save_track+0x3f/0x80
[ 69.966859][ T5833] __kasan_kmalloc+0x98/0xb0
[ 69.971443][ T5833] __kmalloc_cache_noprof+0x243/0x390
[ 69.976817][ T5833] binderfs_binder_device_create+0x16c/0x9c0
[ 69.982787][ T5833] binderfs_fill_super+0x944/0xd90
[ 69.987903][ T5833] get_tree_nodev+0xb7/0x140
[ 69.992731][ T5833] vfs_get_tree+0x90/0x2b0
[ 69.997154][ T5833] do_new_mount+0x2be/0xb40
[ 70.001659][ T5833] __se_sys_mount+0x2d6/0x3c0
[ 70.006327][ T5833] do_syscall_64+0xf3/0x230
[ 70.010823][ T5833] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 70.016719][ T5833]
[ 70.019030][ T5833] Freed by task 5827:
[ 70.022993][ T5833] kasan_save_track+0x3f/0x80
[ 70.027680][ T5833] kasan_save_free_info+0x40/0x50
[ 70.032722][ T5833] __kasan_slab_free+0x59/0x70
[ 70.037488][ T5833] kfree+0x196/0x430
[ 70.041378][ T5833] evict+0x4e8/0x9a0
[ 70.045262][ T5833] __dentry_kill+0x20d/0x630
[ 70.049849][ T5833] shrink_kill+0xa9/0x2c0
[ 70.054170][ T5833] shrink_dentry_list+0x2c0/0x5b0
[ 70.061447][ T5833] shrink_dcache_parent+0xcb/0x3b0
[ 70.066582][ T5833] do_one_tree+0x23/0xe0
[ 70.070900][ T5833] shrink_dcache_for_umount+0xb4/0x180
[ 70.076608][ T5833] generic_shutdown_super+0x6a/0x2d0
[ 70.081884][ T5833] kill_litter_super+0x76/0xb0
[ 70.086637][ T5833] binderfs_kill_super+0x44/0x90
[ 70.091599][ T5833] deactivate_locked_super+0xc4/0x130
[ 70.096962][ T5833] cleanup_mnt+0x41f/0x4b0
[ 70.101491][ T5833] task_work_run+0x24f/0x310
[ 70.106160][ T5833] do_exit+0xa2a/0x28e0
[ 70.110647][ T5833] do_group_exit+0x207/0x2c0
[ 70.115234][ T5833] get_signal+0x16b2/0x1750
[ 70.119747][ T5833] arch_do_signal_or_restart+0x96/0x860
[ 70.125449][ T5833] syscall_exit_to_user_mode+0xce/0x340
[ 70.131014][ T5833] do_syscall_64+0x100/0x230
[ 70.135685][ T5833] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 70.142001][ T5833]
[ 70.144317][ T5833] The buggy address belongs to the object at ffff88802859c800
[ 70.144317][ T5833] which belongs to the cache kmalloc-512 of size 512
[ 70.158451][ T5833] The buggy address is located 8 bytes inside of
[ 70.158451][ T5833] freed 512-byte region [ffff88802859c800, ffff88802859ca00)
[ 70.172062][ T5833]
[ 70.174387][ T5833] The buggy address belongs to the physical page:
[ 70.180881][ T5833] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2859c
[ 70.189633][ T5833] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 70.198119][ T5833] anon flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
[ 70.206084][ T5833] page_type: f5(slab)
[ 70.210054][ T5833] raw: 00fff00000000040 ffff88801ac41c80 0000000000000000 dead000000000001
[ 70.218652][ T5833] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 70.227252][ T5833] head: 00fff00000000040 ffff88801ac41c80 0000000000000000 dead000000000001
[ 70.235916][ T5833] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 70.244630][ T5833] head: 00fff00000000002 ffffea0000a16701 ffffffffffffffff 0000000000000000
[ 70.253308][ T5833] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[ 70.262056][ T5833] page dumped because: kasan: bad access detected
[ 70.268462][ T5833] page_owner tracks the page as allocated
[ 70.274170][ T5833] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5209, tgid 5209 (udevadm), ts 24699096378, free_ts 24683413555
[ 70.295183][ T5833] post_alloc_hook+0x1f4/0x240
[ 70.299979][ T5833] get_page_from_freelist+0x3651/0x37a0
[ 70.305542][ T5833] __alloc_frozen_pages_noprof+0x292/0x710
[ 70.311336][ T5833] alloc_pages_mpol+0x311/0x660
[ 70.316352][ T5833] allocate_slab+0x8f/0x3a0
[ 70.320842][ T5833] ___slab_alloc+0xc27/0x14a0
[ 70.325507][ T5833] __slab_alloc+0x58/0xa0
[ 70.329864][ T5833] __kmalloc_cache_noprof+0x27b/0x390
[ 70.335222][ T5833] kernfs_fop_open+0x3e0/0xd10
[ 70.339988][ T5833] do_dentry_open+0xdec/0x1960
[ 70.344745][ T5833] vfs_open+0x3b/0x370
[ 70.348805][ T5833] path_openat+0x2c74/0x3580
[ 70.353489][ T5833] do_filp_open+0x27f/0x4e0
[ 70.358071][ T5833] do_sys_openat2+0x13e/0x1d0
[ 70.362828][ T5833] __x64_sys_openat+0x247/0x2a0
[ 70.367672][ T5833] do_syscall_64+0xf3/0x230
[ 70.372175][ T5833] page last free pid 5208 tgid 5208 stack trace:
[ 70.379015][ T5833] free_frozen_pages+0xe04/0x10e0
[ 70.384119][ T5833] __slab_free+0x2c2/0x380
[ 70.388697][ T5833] qlist_free_all+0x9a/0x140
[ 70.393382][ T5833] kasan_quarantine_reduce+0x14f/0x170
[ 70.398832][ T5833] __kasan_slab_alloc+0x23/0x80
[ 70.403673][ T5833] kmem_cache_alloc_noprof+0x1d9/0x380
[ 70.409123][ T5833] getname_flags+0xb7/0x540
[ 70.414050][ T5833] do_sys_openat2+0xd2/0x1d0
[ 70.418652][ T5833] __x64_sys_openat+0x247/0x2a0
[ 70.423536][ T5833] do_syscall_64+0xf3/0x230
[ 70.428118][ T5833] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 70.434003][ T5833]
[ 70.436315][ T5833] Memory state around the buggy address:
[ 70.441942][ T5833] ffff88802859c700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 70.450080][ T5833] ffff88802859c780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 70.458125][ T5833] >ffff88802859c800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 70.466256][ T5833] ^
[ 70.470568][ T5833] ffff88802859c880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 70.478618][ T5833] ffff88802859c900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 70.486751][ T5833] ==================================================================
[ 70.509482][ T5833] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 70.516789][ T5833] CPU: 1 UID: 0 PID: 5833 Comm: syz-executor Not tainted 6.13.0-syzkaller-09030-g6d61a53dd6f5 #0
[ 70.527364][ T5833] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 70.537421][ T5833] Call Trace:
[ 70.540698][ T5833]
[ 70.543627][ T5833] dump_stack_lvl+0x241/0x360
[ 70.548299][ T5833] ? __pfx_dump_stack_lvl+0x10/0x10
[ 70.553551][ T5833] ? __pfx__printk+0x10/0x10
[ 70.558224][ T5833] ? preempt_schedule+0xe1/0xf0
[ 70.563169][ T5833] ? vscnprintf+0x5d/0x90
[ 70.567499][ T5833] panic+0x349/0x880
[ 70.571395][ T5833] ? check_panic_on_warn+0x21/0xb0
[ 70.576514][ T5833] ? __pfx_panic+0x10/0x10
[ 70.580927][ T5833] ? _raw_spin_unlock_irqrestore+0x130/0x140
[ 70.586899][ T5833] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[ 70.593216][ T5833] ? print_report+0x502/0x550
[ 70.597885][ T5833] check_panic_on_warn+0x86/0xb0
[ 70.602818][ T5833] ? binder_add_device+0x5f/0xa0
[ 70.607756][ T5833] end_report+0x77/0x160
[ 70.611991][ T5833] kasan_report+0x154/0x180
[ 70.616521][ T5833] ? binder_add_device+0x5f/0xa0
[ 70.621452][ T5833] binder_add_device+0x5f/0xa0
[ 70.626205][ T5833] binderfs_binder_device_create+0x7bf/0x9c0
[ 70.632188][ T5833] binderfs_fill_super+0x944/0xd90
[ 70.637291][ T5833] ? __pfx_binderfs_fill_super+0x10/0x10
[ 70.642928][ T5833] ? shrinker_register+0x160/0x230
[ 70.648123][ T5833] ? sget_fc+0x909/0x9c0
[ 70.652362][ T5833] ? __pfx_set_anon_super_fc+0x10/0x10
[ 70.657907][ T5833] ? __pfx_binderfs_fill_super+0x10/0x10
[ 70.663571][ T5833] get_tree_nodev+0xb7/0x140
[ 70.668352][ T5833] vfs_get_tree+0x90/0x2b0
[ 70.672766][ T5833] do_new_mount+0x2be/0xb40
[ 70.677292][ T5833] ? __pfx_do_new_mount+0x10/0x10
[ 70.682332][ T5833] __se_sys_mount+0x2d6/0x3c0
[ 70.687017][ T5833] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 70.693094][ T5833] ? __pfx___se_sys_mount+0x10/0x10
[ 70.698380][ T5833] ? do_syscall_64+0x100/0x230
[ 70.703143][ T5833] ? __x64_sys_mount+0x20/0xc0
[ 70.707991][ T5833] do_syscall_64+0xf3/0x230
[ 70.712514][ T5833] ? clear_bhb_loop+0x35/0x90
[ 70.717191][ T5833] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 70.723077][ T5833] RIP: 0033:0x7fad12d874ca
[ 70.727509][ T5833] 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
[ 70.747196][ T5833] RSP: 002b:00007ffebb95b458 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 70.755605][ T5833] RAX: ffffffffffffffda RBX: 00007fad12e01ecb RCX: 00007fad12d874ca
[ 70.763674][ T5833] RDX: 00007fad12e0ec27 RSI: 00007fad12e01ecb RDI: 00007fad12e0ec27
[ 70.771652][ T5833] RBP: 00007fad12e020c3 R08: 0000000000000000 R09: 00000000000001ff
[ 70.779615][ T5833] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fad12de41c8
[ 70.787604][ T5833] R13: 00007fad12de41a8 R14: 0000000000000009 R15: 0000000000000000
[ 70.795677][ T5833]
[ 70.799056][ T5833] Kernel Offset: disabled
[ 70.803426][ T5833] 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-build3928163042=/tmp/go-build -gno-record-gcc-switches'
git status (err=)
HEAD detached at 249ceea9b7
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=249ceea9b77a9eda26fb696c50b673d6f295d7f4 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20250113-084457'" "-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=\"249ceea9b77a9eda26fb696c50b673d6f295d7f4\"
/usr/bin/ld: /tmp/ccuYKxDV.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