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 ffff88803fe91c08 by task syz-executor/5322
CPU: 0 UID: 0 PID: 5322 Comm: syz-executor Not tainted 6.14.0-rc1-syzkaller-g2014c95afece-dirty #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
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: 0033:0x7fe2efb874ca
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:00007fff67b22688 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe2efc01ecb RCX: 00007fe2efb874ca
RDX: 00007fe2efc0ec27 RSI: 00007fe2efc01ecb RDI: 00007fe2efc0ec27
RBP: 00007fe2efc020c3 R08: 0000000000000000 R09: 00000000000001ff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe2efbe41c8
R13: 00007fe2efbe41a8 R14: 0000000000000009 R15: 0000000000000000
Allocated by task 5316:
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 5316:
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 ffff88803fe91c00
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
freed 512-byte region [ffff88803fe91c00, ffff88803fe91e00)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x3fe90
head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x4fff00000000040(head|node=1|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 04fff00000000040 ffff88801ac41c80 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
head: 04fff00000000040 ffff88801ac41c80 dead000000000100 dead000000000122
head: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
head: 04fff00000000001 ffffea0000ffa401 ffffffffffffffff 0000000000000000
head: ffff888000000002 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5020, tgid 5020 (dhcpcd), ts 45819556612, free_ts 45438545185
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]
device_private_init drivers/base/core.c:3510 [inline]
device_add+0xc1/0xbf0 drivers/base/core.c:3561
netdev_register_kobject+0x157/0x2e0 net/core/net-sysfs.c:2170
register_netdevice+0x12c3/0x1b10 net/core/dev.c:10861
lapbeth_new_device drivers/net/wan/lapbether.c:418 [inline]
lapbeth_device_event+0x78d/0xa20 drivers/net/wan/lapbether.c:460
notifier_call_chain+0x1a5/0x3f0 kernel/notifier.c:85
__dev_notify_flags+0x207/0x400
dev_change_flags+0xf0/0x1a0 net/core/dev.c:9249
devinet_ioctl+0xcce/0x1ac0 net/ipv4/devinet.c:1208
page last free pid 5020 tgid 5020 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
mm_free_pgd kernel/fork.c:815 [inline]
__mmdrop+0xb9/0x3d0 kernel/fork.c:931
mmdrop include/linux/sched/mm.h:55 [inline]
mmdrop_sched include/linux/sched/mm.h:83 [inline]
mmdrop_lazy_tlb_sched include/linux/sched/mm.h:110 [inline]
finish_task_switch+0x304/0x870 kernel/sched/core.c:5276
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0x1916/0x4c90 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6856
do_wait+0x2a5/0x550 kernel/exit.c:1696
kernel_wait4+0x2a7/0x3e0 kernel/exit.c:1850
__do_sys_wait4 kernel/exit.c:1878 [inline]
__se_sys_wait4 kernel/exit.c:1874 [inline]
__x64_sys_wait4+0x134/0x1e0 kernel/exit.c:1874
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:
ffff88803fe91b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88803fe91b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88803fe91c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88803fe91c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88803fe91d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Warning: Permanently added '[localhost]:48690' (ED25519) to the list of known hosts.
2025/02/03 16:45:38 ignoring optional flag "sandboxArg"="0"
2025/02/03 16:45:39 parsed 1 programs
[ 72.237966][ T5306] cgroup: Unknown subsys name 'net'
[ 72.304524][ T5306] cgroup: Unknown subsys name 'cpuset'
[ 72.309661][ T5306] cgroup: Unknown subsys name 'rlimit'
[ 73.906040][ T5306] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 76.354457][ T1312] ieee802154 phy0 wpan0: encryption failed: -22
[ 76.357029][ T1312] ieee802154 phy1 wpan1: encryption failed: -22
[ 78.520679][ T5316] 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.
[ 79.094251][ T5322] ==================================================================
[ 79.097238][ T5322] BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0
[ 79.100192][ T5322] Write of size 8 at addr ffff88803fe91c08 by task syz-executor/5322
[ 79.103981][ T5322]
[ 79.104883][ T5322] CPU: 0 UID: 0 PID: 5322 Comm: syz-executor Not tainted 6.14.0-rc1-syzkaller-g2014c95afece-dirty #0
[ 79.104896][ T5322] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
[ 79.104903][ T5322] Call Trace:
[ 79.104909][ T5322]
[ 79.104915][ T5322] dump_stack_lvl+0x241/0x360
[ 79.104932][ T5322] ? __pfx_dump_stack_lvl+0x10/0x10
[ 79.104941][ T5322] ? __pfx__printk+0x10/0x10
[ 79.104950][ T5322] ? _printk+0xd5/0x120
[ 79.104957][ T5322] ? __virt_addr_valid+0x183/0x530
[ 79.104971][ T5322] ? __virt_addr_valid+0x183/0x530
[ 79.104984][ T5322] print_report+0x169/0x550
[ 79.104995][ T5322] ? __virt_addr_valid+0x183/0x530
[ 79.105008][ T5322] ? __virt_addr_valid+0x183/0x530
[ 79.105021][ T5322] ? __virt_addr_valid+0x45f/0x530
[ 79.105034][ T5322] ? __phys_addr+0xba/0x170
[ 79.105047][ T5322] ? binder_add_device+0x5f/0xa0
[ 79.105063][ T5322] kasan_report+0x143/0x180
[ 79.105072][ T5322] ? binder_add_device+0x5f/0xa0
[ 79.105086][ T5322] binder_add_device+0x5f/0xa0
[ 79.105104][ T5322] binderfs_binder_device_create+0x7bf/0x9c0
[ 79.105118][ T5322] binderfs_fill_super+0x944/0xd90
[ 79.105130][ T5322] ? __pfx_binderfs_fill_super+0x10/0x10
[ 79.105145][ T5322] ? shrinker_register+0x160/0x230
[ 79.105157][ T5322] ? sget_fc+0x909/0x9c0
[ 79.105169][ T5322] ? __pfx_set_anon_super_fc+0x10/0x10
[ 79.105182][ T5322] ? __pfx_binderfs_fill_super+0x10/0x10
[ 79.105195][ T5322] get_tree_nodev+0xb7/0x140
[ 79.105208][ T5322] vfs_get_tree+0x90/0x2b0
[ 79.105220][ T5322] do_new_mount+0x2be/0xb40
[ 79.105232][ T5322] ? __pfx_do_new_mount+0x10/0x10
[ 79.105244][ T5322] __se_sys_mount+0x2d6/0x3c0
[ 79.105254][ T5322] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 79.105269][ T5322] ? __pfx___se_sys_mount+0x10/0x10
[ 79.105285][ T5322] ? do_syscall_64+0x100/0x230
[ 79.105297][ T5322] ? __x64_sys_mount+0x20/0xc0
[ 79.105308][ T5322] do_syscall_64+0xf3/0x230
[ 79.105318][ T5322] ? clear_bhb_loop+0x35/0x90
[ 79.105335][ T5322] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 79.105358][ T5322] RIP: 0033:0x7fe2efb874ca
[ 79.105368][ T5322] 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
[ 79.105378][ T5322] RSP: 002b:00007fff67b22688 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 79.105392][ T5322] RAX: ffffffffffffffda RBX: 00007fe2efc01ecb RCX: 00007fe2efb874ca
[ 79.105399][ T5322] RDX: 00007fe2efc0ec27 RSI: 00007fe2efc01ecb RDI: 00007fe2efc0ec27
[ 79.105406][ T5322] RBP: 00007fe2efc020c3 R08: 0000000000000000 R09: 00000000000001ff
[ 79.105413][ T5322] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe2efbe41c8
[ 79.105420][ T5322] R13: 00007fe2efbe41a8 R14: 0000000000000009 R15: 0000000000000000
[ 79.105430][ T5322]
[ 79.105434][ T5322]
[ 79.208540][ T5322] Allocated by task 5316:
[ 79.210152][ T5322] kasan_save_track+0x3f/0x80
[ 79.211973][ T5322] __kasan_kmalloc+0x98/0xb0
[ 79.213710][ T5322] __kmalloc_cache_noprof+0x243/0x390
[ 79.215743][ T5322] binderfs_binder_device_create+0x16c/0x9c0
[ 79.217949][ T5322] binderfs_fill_super+0x944/0xd90
[ 79.219814][ T5322] get_tree_nodev+0xb7/0x140
[ 79.221865][ T5322] vfs_get_tree+0x90/0x2b0
[ 79.223563][ T5322] do_new_mount+0x2be/0xb40
[ 79.225260][ T5322] __se_sys_mount+0x2d6/0x3c0
[ 79.227031][ T5322] do_syscall_64+0xf3/0x230
[ 79.228631][ T5322] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 79.230793][ T5322]
[ 79.231702][ T5322] Freed by task 5316:
[ 79.233204][ T5322] kasan_save_track+0x3f/0x80
[ 79.234969][ T5322] kasan_save_free_info+0x40/0x50
[ 79.236713][ T5322] __kasan_slab_free+0x59/0x70
[ 79.238497][ T5322] kfree+0x196/0x430
[ 79.239961][ T5322] evict+0x4e8/0x9a0
[ 79.241492][ T5322] __dentry_kill+0x20d/0x630
[ 79.243263][ T5322] shrink_kill+0xa9/0x2c0
[ 79.244928][ T5322] shrink_dentry_list+0x2c0/0x5b0
[ 79.246856][ T5322] shrink_dcache_parent+0xcb/0x3b0
[ 79.248892][ T5322] do_one_tree+0x23/0xe0
[ 79.250534][ T5322] shrink_dcache_for_umount+0xb4/0x180
[ 79.252565][ T5322] generic_shutdown_super+0x6a/0x2d0
[ 79.254576][ T5322] kill_litter_super+0x76/0xb0
[ 79.256354][ T5322] binderfs_kill_super+0x44/0x90
[ 79.258296][ T5322] deactivate_locked_super+0xc4/0x130
[ 79.260256][ T5322] cleanup_mnt+0x41f/0x4b0
[ 79.261915][ T5322] task_work_run+0x24f/0x310
[ 79.263659][ T5322] do_exit+0xa2a/0x28e0
[ 79.265207][ T5322] do_group_exit+0x207/0x2c0
[ 79.266867][ T5322] get_signal+0x16b2/0x1750
[ 79.268474][ T5322] arch_do_signal_or_restart+0x96/0x860
[ 79.270499][ T5322] syscall_exit_to_user_mode+0xce/0x340
[ 79.272626][ T5322] do_syscall_64+0x100/0x230
[ 79.274383][ T5322] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 79.276624][ T5322]
[ 79.277580][ T5322] The buggy address belongs to the object at ffff88803fe91c00
[ 79.277580][ T5322] which belongs to the cache kmalloc-512 of size 512
[ 79.282592][ T5322] The buggy address is located 8 bytes inside of
[ 79.282592][ T5322] freed 512-byte region [ffff88803fe91c00, ffff88803fe91e00)
[ 79.287277][ T5322]
[ 79.288225][ T5322] The buggy address belongs to the physical page:
[ 79.290662][ T5322] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x3fe90
[ 79.293972][ T5322] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 79.297062][ T5322] flags: 0x4fff00000000040(head|node=1|zone=1|lastcpupid=0x7ff)
[ 79.299860][ T5322] page_type: f5(slab)
[ 79.301289][ T5322] raw: 04fff00000000040 ffff88801ac41c80 dead000000000100 dead000000000122
[ 79.304474][ T5322] raw: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
[ 79.307569][ T5322] head: 04fff00000000040 ffff88801ac41c80 dead000000000100 dead000000000122
[ 79.310750][ T5322] head: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
[ 79.313952][ T5322] head: 04fff00000000001 ffffea0000ffa401 ffffffffffffffff 0000000000000000
[ 79.317100][ T5322] head: ffff888000000002 0000000000000000 00000000ffffffff 0000000000000000
[ 79.320330][ T5322] page dumped because: kasan: bad access detected
[ 79.322788][ T5322] page_owner tracks the page as allocated
[ 79.324892][ T5322] page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5020, tgid 5020 (dhcpcd), ts 45819556612, free_ts 45438545185
[ 79.332277][ T5322] post_alloc_hook+0x1f4/0x240
[ 79.334062][ T5322] get_page_from_freelist+0x365c/0x37a0
[ 79.336059][ T5322] __alloc_frozen_pages_noprof+0x292/0x710
[ 79.338253][ T5322] alloc_pages_mpol+0x311/0x660
[ 79.340052][ T5322] allocate_slab+0x8f/0x3a0
[ 79.341744][ T5322] ___slab_alloc+0xc27/0x14a0
[ 79.343496][ T5322] __slab_alloc+0x58/0xa0
[ 79.345188][ T5322] __kmalloc_cache_noprof+0x27b/0x390
[ 79.347206][ T5322] device_add+0xc1/0xbf0
[ 79.348782][ T5322] netdev_register_kobject+0x157/0x2e0
[ 79.350786][ T5322] register_netdevice+0x12c3/0x1b10
[ 79.352706][ T5322] lapbeth_device_event+0x78d/0xa20
[ 79.354607][ T5322] notifier_call_chain+0x1a5/0x3f0
[ 79.356454][ T5322] __dev_notify_flags+0x207/0x400
[ 79.358266][ T5322] dev_change_flags+0xf0/0x1a0
[ 79.360029][ T5322] devinet_ioctl+0xcce/0x1ac0
[ 79.361818][ T5322] page last free pid 5020 tgid 5020 stack trace:
[ 79.364126][ T5322] free_frozen_pages+0xe0d/0x10e0
[ 79.365988][ T5322] __mmdrop+0xb9/0x3d0
[ 79.367768][ T5322] finish_task_switch+0x304/0x870
[ 79.369982][ T5322] __schedule+0x1916/0x4c90
[ 79.371820][ T5322] schedule+0x14b/0x320
[ 79.373383][ T5322] do_wait+0x2a5/0x550
[ 79.374969][ T5322] kernel_wait4+0x2a7/0x3e0
[ 79.376668][ T5322] __x64_sys_wait4+0x134/0x1e0
[ 79.378435][ T5322] do_syscall_64+0xf3/0x230
[ 79.380120][ T5322] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 79.382324][ T5322]
[ 79.383230][ T5322] Memory state around the buggy address:
[ 79.385232][ T5322] ffff88803fe91b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 79.388161][ T5322] ffff88803fe91b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 79.391092][ T5322] >ffff88803fe91c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 79.394029][ T5322] ^
[ 79.395604][ T5322] ffff88803fe91c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 79.398594][ T5322] ffff88803fe91d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 79.401622][ T5322] ==================================================================
[ 79.656850][ T5322] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 79.659721][ T5322] CPU: 0 UID: 0 PID: 5322 Comm: syz-executor Not tainted 6.14.0-rc1-syzkaller-g2014c95afece-dirty #0
[ 79.663845][ T5322] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
[ 79.667894][ T5322] Call Trace:
[ 79.669210][ T5322]
[ 79.670343][ T5322] dump_stack_lvl+0x241/0x360
[ 79.672207][ T5322] ? __pfx_dump_stack_lvl+0x10/0x10
[ 79.674236][ T5322] ? __pfx__printk+0x10/0x10
[ 79.676011][ T5322] ? preempt_schedule+0xe1/0xf0
[ 79.677945][ T5322] ? vscnprintf+0x5d/0x90
[ 79.679673][ T5322] panic+0x349/0x880
[ 79.681184][ T5322] ? check_panic_on_warn+0x21/0xb0
[ 79.683208][ T5322] ? __pfx_panic+0x10/0x10
[ 79.684947][ T5322] ? _raw_spin_unlock_irqrestore+0x130/0x140
[ 79.687284][ T5322] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[ 79.689718][ T5322] ? print_report+0x502/0x550
[ 79.691599][ T5322] check_panic_on_warn+0x86/0xb0
[ 79.693429][ T5322] ? binder_add_device+0x5f/0xa0
[ 79.695323][ T5322] end_report+0x77/0x160
[ 79.696965][ T5322] kasan_report+0x154/0x180
[ 79.698513][ T5322] ? binder_add_device+0x5f/0xa0
[ 79.700162][ T5322] binder_add_device+0x5f/0xa0
[ 79.701981][ T5322] binderfs_binder_device_create+0x7bf/0x9c0
[ 79.704226][ T5322] binderfs_fill_super+0x944/0xd90
[ 79.706130][ T5322] ? __pfx_binderfs_fill_super+0x10/0x10
[ 79.708233][ T5322] ? shrinker_register+0x160/0x230
[ 79.710197][ T5322] ? sget_fc+0x909/0x9c0
[ 79.711928][ T5322] ? __pfx_set_anon_super_fc+0x10/0x10
[ 79.714075][ T5322] ? __pfx_binderfs_fill_super+0x10/0x10
[ 79.716173][ T5322] get_tree_nodev+0xb7/0x140
[ 79.718060][ T5322] vfs_get_tree+0x90/0x2b0
[ 79.719829][ T5322] do_new_mount+0x2be/0xb40
[ 79.721631][ T5322] ? __pfx_do_new_mount+0x10/0x10
[ 79.723655][ T5322] __se_sys_mount+0x2d6/0x3c0
[ 79.725438][ T5322] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 79.727709][ T5322] ? __pfx___se_sys_mount+0x10/0x10
[ 79.729664][ T5322] ? do_syscall_64+0x100/0x230
[ 79.731643][ T5322] ? __x64_sys_mount+0x20/0xc0
[ 79.733537][ T5322] do_syscall_64+0xf3/0x230
[ 79.735339][ T5322] ? clear_bhb_loop+0x35/0x90
[ 79.737441][ T5322] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 79.739870][ T5322] RIP: 0033:0x7fe2efb874ca
[ 79.741672][ T5322] 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
[ 79.748964][ T5322] RSP: 002b:00007fff67b22688 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 79.752173][ T5322] RAX: ffffffffffffffda RBX: 00007fe2efc01ecb RCX: 00007fe2efb874ca
[ 79.755027][ T5322] RDX: 00007fe2efc0ec27 RSI: 00007fe2efc01ecb RDI: 00007fe2efc0ec27
[ 79.757812][ T5322] RBP: 00007fe2efc020c3 R08: 0000000000000000 R09: 00000000000001ff
[ 79.760703][ T5322] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe2efbe41c8
[ 79.763725][ T5322] R13: 00007fe2efbe41a8 R14: 0000000000000009 R15: 0000000000000000
[ 79.766469][ T5322]
[ 79.767902][ T5322] Kernel Offset: disabled
[ 79.769411][ T5322] Rebooting in 86400 seconds..
VM DIAGNOSIS:
16:45:48 Registers:
info registers vcpu 0
CPU#0
RAX=0000000000000073 RBX=ffffffff9a74c140 RCX=0000000000000000 RDX=00000000000003f8
RSI=0000000000000000 RDI=0000000000000020 RBP=0000000000000000 RSP=ffffc9000db271d0
R8 =ffffffff8577772b R9 =1ffff11003e05046 R10=dffffc0000000000 R11=ffffffff857776e0
R12=dffffc0000000000 R13=0000000000000073 R14=0000000000000073 R15=00000000000003f8
RIP=ffffffff8577775e RFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0000 0000000000000000 ffffffff 00c00000
CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA]
SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA]
DS =0000 0000000000000000 ffffffff 00c00000
FS =0000 000055555d844500 ffffffff 00c00000
GS =0000 ffff88801fc00000 ffffffff 00c00000
LDT=0000 0000000000000000 ffffffff 00c00000
TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy
GDT= fffffe0000001000 0000007f
IDT= fffffe0000000000 00000fff
CR0=80050033 CR2=00007fe2efb0f700 CR3=0000000042cba000 CR4=00352ef0
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000
DR6=00000000fffe0ff0 DR7=0000000000000400
EFER=0000000000000d01
FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80
FPR0=0000000000000000 0000 FPR1=0000000000000000 0000
FPR2=0000000000000000 0000 FPR3=0000000000000000 0000
FPR4=0000000000000000 0000 FPR5=0000000000000000 0000
FPR6=0000000000000000 0000 FPR7=0000000000000000 0000
Opmask00=00000000eee0c0c0 Opmask01=000000000000000f Opmask02=00000000ffffffef Opmask03=0000000000000000
Opmask04=0000000000000000 Opmask05=0000000000000000 Opmask06=0000000000000000 Opmask07=0000000000000000
ZMM00=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM01=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007fff67b226a0 0000003000000010
ZMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM03=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM04=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM05=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM06=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM08=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM09=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM10=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM13=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM14=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM15=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM16=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM17=0000000000000000 0000000000000000 0000000000000000 0000000000000000 2525252525252525 2525252525252525 2525252525252525 2525252525252525
ZMM18=0000000000000000 0000000000000000 0000000000000000 0000000000000000 2029706d742d7a79 73287269646b6d00 706d742d7a79732f 2e00303030303031
ZMM19=0000000000000000 0000000000000000 0000000000000000 0000000000000000 050c554851085f5c 560d574c414e4800 554851085f5c560a 0b00151515151514
ZMM20=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM21=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM22=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM23=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM24=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM25=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM26=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM27=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM28=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM29=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM30=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM31=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
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/linux/gopath/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/syzkaller/jobs/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/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-build3679453093=/tmp/go-build -gno-record-gcc-switches'
git status (err=)
HEAD detached at da72ac06e38
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=da72ac06e38cf1dd2ecbddd5502225ff7589542d -X 'github.com/google/syzkaller/prog.gitRevisionDate=20250121-154645'" "-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 -DGOOS_linux=1 -DGOARCH_amd64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"da72ac06e38cf1dd2ecbddd5502225ff7589542d\"
/usr/bin/ld: /tmp/ccQvOCbf.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