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+0x5b/0xa0 drivers/android/binder.c:6932
Write of size 8 at addr ffff8880330e2008 by task syz-executor/5783
CPU: 0 UID: 0 PID: 5783 Comm: syz-executor Not tainted 6.14.0-rc1-syzkaller-g2014c95afece #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+0x23d/0x360 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:378 [inline]
print_report+0x165/0x540 mm/kasan/report.c:489
kasan_report+0x13f/0x180 mm/kasan/report.c:602
hlist_add_head include/linux/list.h:1026 [inline]
binder_add_device+0x5b/0xa0 drivers/android/binder.c:6932
binderfs_binder_device_create+0x7bf/0x9c0 drivers/android/binderfs.c:210
binderfs_fill_super+0x940/0xd90 drivers/android/binderfs.c:729
vfs_get_super fs/super.c:1280 [inline]
get_tree_nodev+0xb3/0x140 fs/super.c:1299
vfs_get_tree+0x8c/0x280 fs/super.c:1814
do_new_mount+0x2ba/0xb40 fs/namespace.c:3560
do_mount fs/namespace.c:3900 [inline]
__do_sys_mount fs/namespace.c:4111 [inline]
__se_sys_mount+0x2d2/0x3c0 fs/namespace.c:4088
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x7e/0x180 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fb0e1b8e54a
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:00007fff23ec6428 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fb0e1c0e663 RCX: 00007fb0e1b8e54a
RDX: 00007fb0e1c1dda7 RSI: 00007fb0e1c0e663 RDI: 00007fb0e1c1dda7
RBP: 00007fb0e1c0e8ac R08: 0000000000000000 R09: 00000000000001ff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb0e1beb1a8
R13: 00007fb0e1beb180 R14: 0000000000000009 R15: 0000000000000000
Allocated by task 5777:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3b/0x70 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
__kasan_kmalloc+0x94/0xb0 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__kmalloc_cache_noprof+0x237/0x370 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+0x940/0xd90 drivers/android/binderfs.c:729
vfs_get_super fs/super.c:1280 [inline]
get_tree_nodev+0xb3/0x140 fs/super.c:1299
vfs_get_tree+0x8c/0x280 fs/super.c:1814
do_new_mount+0x2ba/0xb40 fs/namespace.c:3560
do_mount fs/namespace.c:3900 [inline]
__do_sys_mount fs/namespace.c:4111 [inline]
__se_sys_mount+0x2d2/0x3c0 fs/namespace.c:4088
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x7e/0x180 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Freed by task 5777:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3b/0x70 mm/kasan/common.c:68
kasan_save_free_info+0x3c/0x50 mm/kasan/generic.c:576
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x55/0x70 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+0x18e/0x410 mm/slub.c:4757
evict+0x4e4/0x990 fs/inode.c:796
__dentry_kill+0x200/0x610 fs/dcache.c:643
shrink_kill+0xa9/0x2c0 fs/dcache.c:1088
shrink_dentry_list+0x2bc/0x5b0 fs/dcache.c:1115
shrink_dcache_parent+0xc7/0x3b0
do_one_tree+0x23/0xe0 fs/dcache.c:1578
shrink_dcache_for_umount+0xb0/0x170 fs/dcache.c:1595
generic_shutdown_super+0x66/0x2d0 fs/super.c:620
kill_anon_super fs/super.c:1237 [inline]
kill_litter_super+0x72/0xa0 fs/super.c:1247
binderfs_kill_super+0x40/0x90 drivers/android/binderfs.c:791
deactivate_locked_super+0xc0/0x120 fs/super.c:473
cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1413
task_work_run+0x24b/0x310 kernel/task_work.c:227
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0xa26/0x28d0 kernel/exit.c:938
do_group_exit+0x203/0x2b0 kernel/exit.c:1087
get_signal+0x16ae/0x1740 kernel/signal.c:3036
arch_do_signal_or_restart+0x92/0x860 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+0xc9/0x320 kernel/entry/common.c:218
do_syscall_64+0x8a/0x180 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x76/0x7e
The buggy address belongs to the object at ffff8880330e2000
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
freed 512-byte region [ffff8880330e2000, ffff8880330e2200)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x330e0
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
ksm flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801a441c80 ffffea00009fa300 dead000000000003
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801a441c80 ffffea00009fa300 dead000000000003
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000002 ffffea0000cc3801 ffffffffffffffff 0000000000000000
head: ffff888000000004 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 5149, tgid 5149 (udevd), ts 44435465394, free_ts 42130467410
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1e0/0x220 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x35e2/0x3720 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x252/0x680 mm/page_alloc.c:4739
alloc_pages_mpol+0x30d/0x660 mm/mempolicy.c:2270
alloc_slab_page mm/slub.c:2423 [inline]
allocate_slab+0x8f/0x390 mm/slub.c:2587
new_slab mm/slub.c:2640 [inline]
___slab_alloc+0xc35/0x1490 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+0x26f/0x370 mm/slub.c:4320
kmalloc_noprof include/linux/slab.h:901 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
kernfs_fop_open+0x3dc/0xd00 fs/kernfs/file.c:623
do_dentry_open+0xdea/0x1960 fs/open.c:955
vfs_open+0x37/0x360 fs/open.c:1085
do_open fs/namei.c:3830 [inline]
path_openat+0x2c79/0x3580 fs/namei.c:3989
do_filp_open+0x27b/0x4d0 fs/namei.c:4016
do_sys_openat2+0x13a/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+0x243/0x290 fs/open.c:1453
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x7e/0x180 arch/x86/entry/common.c:83
page last free pid 24 tgid 24 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_frozen_pages+0xddf/0x10a0 mm/page_alloc.c:2660
pagetable_free include/linux/mm.h:2917 [inline]
pagetable_dtor_free include/linux/mm.h:3015 [inline]
__tlb_remove_table+0x338/0x420 include/asm-generic/tlb.h:216
__tlb_remove_table_free mm/mmu_gather.c:227 [inline]
tlb_remove_table_rcu+0x72/0xe0 mm/mmu_gather.c:282
rcu_do_batch kernel/rcu/tree.c:2546 [inline]
rcu_core+0xaa6/0x1790 kernel/rcu/tree.c:2802
handle_softirqs+0x2d0/0x990 kernel/softirq.c:561
run_ksoftirqd+0xc6/0x130 kernel/softirq.c:950
smpboot_thread_fn+0x540/0xa20 kernel/smpboot.c:164
kthread+0x7a5/0x910 kernel/kthread.c:464
ret_from_fork+0x47/0x80 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:
ffff8880330e1f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8880330e1f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8880330e2000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880330e2080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880330e2100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Warning: Permanently added '10.128.0.173' (ED25519) to the list of known hosts.
2025/02/03 08:14:08 ignoring optional flag "sandboxArg"="0"
2025/02/03 08:14:09 parsed 1 programs
[ 80.771926][ T5770] cgroup: Unknown subsys name 'net'
[ 80.943530][ T5770] cgroup: Unknown subsys name 'cpuset'
[ 80.952702][ T5770] cgroup: Unknown subsys name 'rlimit'
[ 80.958439][ T5770] cgroup: Unknown subsys name 'memory'
[ 82.452786][ T5770] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 85.481609][ T5785] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[ 85.490336][ T5785] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[ 85.498336][ T5785] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[ 85.507920][ T5785] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[ 85.517036][ T5785] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3
[ 85.526009][ T5785] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[ 85.608514][ T5783] ==================================================================
[ 85.616618][ T5783] BUG: KASAN: slab-use-after-free in binder_add_device+0x5b/0xa0
[ 85.624354][ T5783] Write of size 8 at addr ffff8880330e2008 by task syz-executor/5783
[ 85.632418][ T5783]
[ 85.634759][ T5783] CPU: 0 UID: 0 PID: 5783 Comm: syz-executor Not tainted 6.14.0-rc1-syzkaller-g2014c95afece #0
[ 85.634778][ T5783] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 85.634794][ T5783] Call Trace:
[ 85.634801][ T5783]
[ 85.634808][ T5783] dump_stack_lvl+0x23d/0x360
[ 85.634833][ T5783] ? __pfx_dump_stack_lvl+0x10/0x10
[ 85.634854][ T5783] ? __pfx__printk+0x10/0x10
[ 85.634874][ T5783] ? _printk+0xd1/0x120
[ 85.634892][ T5783] ? __virt_addr_valid+0x17f/0x530
[ 85.634908][ T5783] ? __virt_addr_valid+0x17f/0x530
[ 85.634923][ T5783] print_report+0x165/0x540
[ 85.634945][ T5783] ? __virt_addr_valid+0x17f/0x530
[ 85.634959][ T5783] ? __virt_addr_valid+0x17f/0x530
[ 85.634973][ T5783] ? __virt_addr_valid+0x45b/0x530
[ 85.634987][ T5783] ? __phys_addr+0xb6/0x170
[ 85.635001][ T5783] ? binder_add_device+0x5b/0xa0
[ 85.635015][ T5783] kasan_report+0x13f/0x180
[ 85.635038][ T5783] ? binder_add_device+0x5b/0xa0
[ 85.635054][ T5783] binder_add_device+0x5b/0xa0
[ 85.635067][ T5783] binderfs_binder_device_create+0x7bf/0x9c0
[ 85.635094][ T5783] binderfs_fill_super+0x940/0xd90
[ 85.635119][ T5783] ? __pfx_binderfs_fill_super+0x10/0x10
[ 85.635149][ T5783] ? shrinker_register+0x15c/0x220
[ 85.635169][ T5783] ? sget_fc+0x905/0x9c0
[ 85.635191][ T5783] ? __pfx_set_anon_super_fc+0x10/0x10
[ 85.635204][ T5783] ? __pfx_binderfs_fill_super+0x10/0x10
[ 85.635227][ T5783] get_tree_nodev+0xb3/0x140
[ 85.635241][ T5783] vfs_get_tree+0x8c/0x280
[ 85.635256][ T5783] do_new_mount+0x2ba/0xb40
[ 85.635276][ T5783] ? __pfx_do_new_mount+0x10/0x10
[ 85.635296][ T5783] __se_sys_mount+0x2d2/0x3c0
[ 85.635314][ T5783] ? lockdep_hardirqs_on_prepare+0x439/0x7a0
[ 85.635338][ T5783] ? __pfx___se_sys_mount+0x10/0x10
[ 85.635357][ T5783] ? __x64_sys_mount+0x1c/0xc0
[ 85.635380][ T5783] do_syscall_64+0x7e/0x180
[ 85.635401][ T5783] ? clear_bhb_loop+0x45/0xa0
[ 85.635422][ T5783] ? clear_bhb_loop+0x45/0xa0
[ 85.635444][ T5783] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 85.635477][ T5783] RIP: 0033:0x7fb0e1b8e54a
[ 85.635493][ T5783] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
[ 85.635505][ T5783] RSP: 002b:00007fff23ec6428 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 85.635522][ T5783] RAX: ffffffffffffffda RBX: 00007fb0e1c0e663 RCX: 00007fb0e1b8e54a
[ 85.635533][ T5783] RDX: 00007fb0e1c1dda7 RSI: 00007fb0e1c0e663 RDI: 00007fb0e1c1dda7
[ 85.635543][ T5783] RBP: 00007fb0e1c0e8ac R08: 0000000000000000 R09: 00000000000001ff
[ 85.635553][ T5783] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb0e1beb1a8
[ 85.635562][ T5783] R13: 00007fb0e1beb180 R14: 0000000000000009 R15: 0000000000000000
[ 85.635576][ T5783]
[ 85.635581][ T5783]
[ 85.908214][ T5783] Allocated by task 5777:
[ 85.912539][ T5783] kasan_save_track+0x3b/0x70
[ 85.917245][ T5783] __kasan_kmalloc+0x94/0xb0
[ 85.921838][ T5783] __kmalloc_cache_noprof+0x237/0x370
[ 85.927291][ T5783] binderfs_binder_device_create+0x16c/0x9c0
[ 85.933366][ T5783] binderfs_fill_super+0x940/0xd90
[ 85.938504][ T5783] get_tree_nodev+0xb3/0x140
[ 85.943281][ T5783] vfs_get_tree+0x8c/0x280
[ 85.947701][ T5783] do_new_mount+0x2ba/0xb40
[ 85.952556][ T5783] __se_sys_mount+0x2d2/0x3c0
[ 85.957235][ T5783] do_syscall_64+0x7e/0x180
[ 85.961825][ T5783] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 85.967721][ T5783]
[ 85.970050][ T5783] Freed by task 5777:
[ 85.974023][ T5783] kasan_save_track+0x3b/0x70
[ 85.978699][ T5783] kasan_save_free_info+0x3c/0x50
[ 85.983738][ T5783] __kasan_slab_free+0x55/0x70
[ 85.988513][ T5783] kfree+0x18e/0x410
[ 85.992427][ T5783] evict+0x4e4/0x990
[ 85.996344][ T5783] __dentry_kill+0x200/0x610
[ 86.000936][ T5783] shrink_kill+0xa9/0x2c0
[ 86.005267][ T5783] shrink_dentry_list+0x2bc/0x5b0
[ 86.010292][ T5783] shrink_dcache_parent+0xc7/0x3b0
[ 86.015417][ T5783] do_one_tree+0x23/0xe0
[ 86.019658][ T5783] shrink_dcache_for_umount+0xb0/0x170
[ 86.025118][ T5783] generic_shutdown_super+0x66/0x2d0
[ 86.030410][ T5783] kill_litter_super+0x72/0xa0
[ 86.035171][ T5783] binderfs_kill_super+0x40/0x90
[ 86.040118][ T5783] deactivate_locked_super+0xc0/0x120
[ 86.045491][ T5783] cleanup_mnt+0x41f/0x4b0
[ 86.049919][ T5783] task_work_run+0x24b/0x310
[ 86.054611][ T5783] do_exit+0xa26/0x28d0
[ 86.058773][ T5783] do_group_exit+0x203/0x2b0
[ 86.063399][ T5783] get_signal+0x16ae/0x1740
[ 86.068008][ T5783] arch_do_signal_or_restart+0x92/0x860
[ 86.073561][ T5783] syscall_exit_to_user_mode+0xc9/0x320
[ 86.079108][ T5783] do_syscall_64+0x8a/0x180
[ 86.083612][ T5783] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 86.089508][ T5783]
[ 86.091850][ T5783] The buggy address belongs to the object at ffff8880330e2000
[ 86.091850][ T5783] which belongs to the cache kmalloc-512 of size 512
[ 86.105920][ T5783] The buggy address is located 8 bytes inside of
[ 86.105920][ T5783] freed 512-byte region [ffff8880330e2000, ffff8880330e2200)
[ 86.119555][ T5783]
[ 86.121980][ T5783] The buggy address belongs to the physical page:
[ 86.128432][ T5783] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x330e0
[ 86.137203][ T5783] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 86.145723][ T5783] ksm flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
[ 86.153754][ T5783] page_type: f5(slab)
[ 86.157827][ T5783] raw: 00fff00000000040 ffff88801a441c80 ffffea00009fa300 dead000000000003
[ 86.166422][ T5783] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 86.175018][ T5783] head: 00fff00000000040 ffff88801a441c80 ffffea00009fa300 dead000000000003
[ 86.183685][ T5783] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 86.192394][ T5783] head: 00fff00000000002 ffffea0000cc3801 ffffffffffffffff 0000000000000000
[ 86.201154][ T5783] head: ffff888000000004 0000000000000000 00000000ffffffff 0000000000000000
[ 86.209917][ T5783] page dumped because: kasan: bad access detected
[ 86.216346][ T5783] page_owner tracks the page as allocated
[ 86.222053][ T5783] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5149, tgid 5149 (udevd), ts 44435465394, free_ts 42130467410
[ 86.242893][ T5783] post_alloc_hook+0x1e0/0x220
[ 86.247664][ T5783] get_page_from_freelist+0x35e2/0x3720
[ 86.253226][ T5783] __alloc_frozen_pages_noprof+0x252/0x680
[ 86.259058][ T5783] alloc_pages_mpol+0x30d/0x660
[ 86.263912][ T5783] allocate_slab+0x8f/0x390
[ 86.268431][ T5783] ___slab_alloc+0xc35/0x1490
[ 86.273108][ T5783] __slab_alloc+0x58/0xa0
[ 86.277463][ T5783] __kmalloc_cache_noprof+0x26f/0x370
[ 86.282833][ T5783] kernfs_fop_open+0x3dc/0xd00
[ 86.287599][ T5783] do_dentry_open+0xdea/0x1960
[ 86.292385][ T5783] vfs_open+0x37/0x360
[ 86.296480][ T5783] path_openat+0x2c79/0x3580
[ 86.301076][ T5783] do_filp_open+0x27b/0x4d0
[ 86.305665][ T5783] do_sys_openat2+0x13a/0x1d0
[ 86.310381][ T5783] __x64_sys_openat+0x243/0x290
[ 86.315245][ T5783] do_syscall_64+0x7e/0x180
[ 86.319751][ T5783] page last free pid 24 tgid 24 stack trace:
[ 86.325733][ T5783] free_frozen_pages+0xddf/0x10a0
[ 86.330779][ T5783] __tlb_remove_table+0x338/0x420
[ 86.335820][ T5783] tlb_remove_table_rcu+0x72/0xe0
[ 86.340859][ T5783] rcu_core+0xaa6/0x1790
[ 86.345195][ T5783] handle_softirqs+0x2d0/0x990
[ 86.349972][ T5783] run_ksoftirqd+0xc6/0x130
[ 86.354503][ T5783] smpboot_thread_fn+0x540/0xa20
[ 86.359543][ T5783] kthread+0x7a5/0x910
[ 86.363695][ T5783] ret_from_fork+0x47/0x80
[ 86.368205][ T5783] ret_from_fork_asm+0x1a/0x30
[ 86.373009][ T5783]
[ 86.375338][ T5783] Memory state around the buggy address:
[ 86.380962][ T5783] ffff8880330e1f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 86.389019][ T5783] ffff8880330e1f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 86.397274][ T5783] >ffff8880330e2000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 86.405331][ T5783] ^
[ 86.409664][ T5783] ffff8880330e2080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 86.417722][ T5783] ffff8880330e2100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 86.425778][ T5783] ==================================================================
[ 86.434488][ T5783] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 86.441742][ T5783] CPU: 0 UID: 0 PID: 5783 Comm: syz-executor Not tainted 6.14.0-rc1-syzkaller-g2014c95afece #0
[ 86.452166][ T5783] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 86.462239][ T5783] Call Trace:
[ 86.465535][ T5783]
[ 86.468568][ T5783] dump_stack_lvl+0x23d/0x360
[ 86.473273][ T5783] ? __pfx_dump_stack_lvl+0x10/0x10
[ 86.478507][ T5783] ? __pfx__printk+0x10/0x10
[ 86.483113][ T5783] ? preempt_schedule+0xdd/0xf0
[ 86.487970][ T5783] ? vscnprintf+0x59/0x80
[ 86.492308][ T5783] panic+0x345/0x880
[ 86.496214][ T5783] ? asm_sysvec_apic_timer_interrupt+0x16/0x20
[ 86.502406][ T5783] ? check_panic_on_warn+0x1d/0xa0
[ 86.507615][ T5783] ? __pfx_panic+0x10/0x10
[ 86.512044][ T5783] ? _raw_spin_unlock_irqrestore+0x12c/0x140
[ 86.518032][ T5783] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[ 86.524362][ T5783] ? print_report+0x4fe/0x540
[ 86.529065][ T5783] check_panic_on_warn+0x82/0xa0
[ 86.534018][ T5783] ? binder_add_device+0x5b/0xa0
[ 86.539042][ T5783] end_report+0x77/0x150
[ 86.543301][ T5783] kasan_report+0x150/0x180
[ 86.547831][ T5783] ? binder_add_device+0x5b/0xa0
[ 86.552857][ T5783] binder_add_device+0x5b/0xa0
[ 86.557882][ T5783] binderfs_binder_device_create+0x7bf/0x9c0
[ 86.563888][ T5783] binderfs_fill_super+0x940/0xd90
[ 86.569014][ T5783] ? __pfx_binderfs_fill_super+0x10/0x10
[ 86.574775][ T5783] ? shrinker_register+0x15c/0x220
[ 86.579937][ T5783] ? sget_fc+0x905/0x9c0
[ 86.584219][ T5783] ? __pfx_set_anon_super_fc+0x10/0x10
[ 86.589813][ T5783] ? __pfx_binderfs_fill_super+0x10/0x10
[ 86.595465][ T5783] get_tree_nodev+0xb3/0x140
[ 86.600063][ T5783] vfs_get_tree+0x8c/0x280
[ 86.604486][ T5783] do_new_mount+0x2ba/0xb40
[ 86.608998][ T5783] ? __pfx_do_new_mount+0x10/0x10
[ 86.614042][ T5783] __se_sys_mount+0x2d2/0x3c0
[ 86.618731][ T5783] ? lockdep_hardirqs_on_prepare+0x439/0x7a0
[ 86.624727][ T5783] ? __pfx___se_sys_mount+0x10/0x10
[ 86.630036][ T5783] ? __x64_sys_mount+0x1c/0xc0
[ 86.634866][ T5783] do_syscall_64+0x7e/0x180
[ 86.639403][ T5783] ? clear_bhb_loop+0x45/0xa0
[ 86.644112][ T5783] ? clear_bhb_loop+0x45/0xa0
[ 86.648801][ T5783] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 86.654704][ T5783] RIP: 0033:0x7fb0e1b8e54a
[ 86.659123][ T5783] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
[ 86.678735][ T5783] RSP: 002b:00007fff23ec6428 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 86.687243][ T5783] RAX: ffffffffffffffda RBX: 00007fb0e1c0e663 RCX: 00007fb0e1b8e54a
[ 86.695306][ T5783] RDX: 00007fb0e1c1dda7 RSI: 00007fb0e1c0e663 RDI: 00007fb0e1c1dda7
[ 86.703281][ T5783] RBP: 00007fb0e1c0e8ac R08: 0000000000000000 R09: 00000000000001ff
[ 86.711255][ T5783] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb0e1beb1a8
[ 86.719399][ T5783] R13: 00007fb0e1beb180 R14: 0000000000000009 R15: 0000000000000000
[ 86.727382][ T5783]
[ 86.730719][ T5783] Kernel Offset: disabled
[ 86.735047][ T5783] 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-build1338351046=/tmp/go-build -gno-record-gcc-switches'
git status (err=)
HEAD detached at 568559e4e6
nothing to commit, working tree clean
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sys/syz-sysgen
make .descriptions
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
bin/syz-sysgen
touch .descriptions
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=568559e4e604140cecd9fc4835eaa0298a1cadcc -X 'github.com/google/syzkaller/prog.gitRevisionDate=20250201-125757'" -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=\"568559e4e604140cecd9fc4835eaa0298a1cadcc\"
/usr/bin/ld: /tmp/ccwoHtIi.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