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 ffff88802d12d808 by task syz-executor/5778
CPU: 0 UID: 0 PID: 5778 Comm: syz-executor Not tainted 6.14.0-rc2-syzkaller-00346-gba643b6d8440 #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: 0033:0x7f4778d7feba
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:00007ffee669d978 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f4778df16f1 RCX: 00007f4778d7feba
RDX: 00007f4778dfcaf7 RSI: 00007f4778df16f1 RDI: 00007f4778dfcaf7
RBP: 00007f4778df1900 R08: 0000000000000000 R09: 00000000000001ff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4778ddc068
R13: 00007f4778ddc048 R14: 0000000000000009 R15: 0000000000000000
Allocated by task 5772:
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 5772:
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 ffff88802d12d800
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
freed 512-byte region [ffff88802d12d800, ffff88802d12da00)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2d12c
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 ffff88801a041c80 0000000000000000 dead000000000001
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801a041c80 0000000000000000 dead000000000001
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000002 ffffea0000b44b01 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 5152, tgid 5152 (udevd), ts 32708466473, free_ts 32703712913
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:956
vfs_open+0x37/0x360 fs/open.c:1086
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:1428
do_sys_open fs/open.c:1443 [inline]
__do_sys_openat fs/open.c:1459 [inline]
__se_sys_openat fs/open.c:1454 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1454
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 5153 tgid 5153 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
discard_slab mm/slub.c:2684 [inline]
__put_partials+0x15e/0x1b0 mm/slub.c:3153
put_cpu_partial+0x17c/0x250 mm/slub.c:3228
__slab_free+0x28c/0x370 mm/slub.c:4479
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9a/0x130 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x1f/0x70 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]
__kmalloc_cache_noprof+0x1d1/0x370 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:956
vfs_open+0x37/0x360 fs/open.c:1086
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:1428
do_sys_open fs/open.c:1443 [inline]
__do_sys_openat fs/open.c:1459 [inline]
__se_sys_openat fs/open.c:1454 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1454
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x7e/0x180 arch/x86/entry/common.c:83
Memory state around the buggy address:
ffff88802d12d700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88802d12d780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88802d12d800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88802d12d880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88802d12d900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Warning: Permanently added '10.128.1.12' (ED25519) to the list of known hosts.
2025/02/16 19:11:52 ignoring optional flag "sandboxArg"="0"
2025/02/16 19:11:53 parsed 1 programs
[ 80.900124][ T5762] cgroup: Unknown subsys name 'net'
[ 81.029826][ T5762] cgroup: Unknown subsys name 'cpuset'
[ 81.038582][ T5762] cgroup: Unknown subsys name 'rlimit'
[ 81.044275][ T5762] cgroup: Unknown subsys name 'memory'
[ 82.555380][ T5762] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 85.535978][ T5778] ==================================================================
[ 85.544080][ T5778] BUG: KASAN: slab-use-after-free in binder_add_device+0x5b/0xa0
[ 85.551844][ T5778] Write of size 8 at addr ffff88802d12d808 by task syz-executor/5778
[ 85.559926][ T5778]
[ 85.562275][ T5778] CPU: 0 UID: 0 PID: 5778 Comm: syz-executor Not tainted 6.14.0-rc2-syzkaller-00346-gba643b6d8440 #0
[ 85.562293][ T5778] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 85.562306][ T5778] Call Trace:
[ 85.562314][ T5778]
[ 85.562321][ T5778] dump_stack_lvl+0x23d/0x360
[ 85.562346][ T5778] ? __pfx_dump_stack_lvl+0x10/0x10
[ 85.562365][ T5778] ? __pfx__printk+0x10/0x10
[ 85.562384][ T5778] ? _printk+0xd1/0x120
[ 85.562401][ T5778] ? __virt_addr_valid+0x17f/0x530
[ 85.562431][ T5778] ? __virt_addr_valid+0x17f/0x530
[ 85.562455][ T5778] print_report+0x165/0x540
[ 85.562476][ T5778] ? __virt_addr_valid+0x17f/0x530
[ 85.562499][ T5778] ? __virt_addr_valid+0x17f/0x530
[ 85.562521][ T5778] ? __virt_addr_valid+0x45b/0x530
[ 85.562544][ T5778] ? __phys_addr+0xb6/0x170
[ 85.562567][ T5778] ? binder_add_device+0x5b/0xa0
[ 85.562585][ T5778] kasan_report+0x13f/0x180
[ 85.562607][ T5778] ? binder_add_device+0x5b/0xa0
[ 85.562628][ T5778] binder_add_device+0x5b/0xa0
[ 85.562646][ T5778] binderfs_binder_device_create+0x7bf/0x9c0
[ 85.562667][ T5778] binderfs_fill_super+0x940/0xd90
[ 85.562687][ T5778] ? __pfx_binderfs_fill_super+0x10/0x10
[ 85.562713][ T5778] ? shrinker_register+0x15c/0x220
[ 85.562731][ T5778] ? sget_fc+0x905/0x9c0
[ 85.562752][ T5778] ? __pfx_set_anon_super_fc+0x10/0x10
[ 85.562775][ T5778] ? __pfx_binderfs_fill_super+0x10/0x10
[ 85.562792][ T5778] get_tree_nodev+0xb3/0x140
[ 85.562815][ T5778] vfs_get_tree+0x8c/0x280
[ 85.562829][ T5778] do_new_mount+0x2ba/0xb40
[ 85.562848][ T5778] ? __pfx_do_new_mount+0x10/0x10
[ 85.562867][ T5778] __se_sys_mount+0x2d2/0x3c0
[ 85.562884][ T5778] ? lockdep_hardirqs_on_prepare+0x439/0x7a0
[ 85.562906][ T5778] ? __pfx___se_sys_mount+0x10/0x10
[ 85.562925][ T5778] ? __x64_sys_mount+0x1c/0xc0
[ 85.562943][ T5778] do_syscall_64+0x7e/0x180
[ 85.562958][ T5778] ? clear_bhb_loop+0x45/0xa0
[ 85.562980][ T5778] ? clear_bhb_loop+0x45/0xa0
[ 85.563002][ T5778] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 85.563027][ T5778] RIP: 0033:0x7f4778d7feba
[ 85.563043][ T5778] 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
[ 85.563056][ T5778] RSP: 002b:00007ffee669d978 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 85.563071][ T5778] RAX: ffffffffffffffda RBX: 00007f4778df16f1 RCX: 00007f4778d7feba
[ 85.563083][ T5778] RDX: 00007f4778dfcaf7 RSI: 00007f4778df16f1 RDI: 00007f4778dfcaf7
[ 85.563093][ T5778] RBP: 00007f4778df1900 R08: 0000000000000000 R09: 00000000000001ff
[ 85.563102][ T5778] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4778ddc068
[ 85.563112][ T5778] R13: 00007f4778ddc048 R14: 0000000000000009 R15: 0000000000000000
[ 85.563126][ T5778]
[ 85.563131][ T5778]
[ 85.836947][ T5778] Allocated by task 5772:
[ 85.841277][ T5778] kasan_save_track+0x3b/0x70
[ 85.846052][ T5778] __kasan_kmalloc+0x94/0xb0
[ 85.850741][ T5778] __kmalloc_cache_noprof+0x237/0x370
[ 85.856121][ T5778] binderfs_binder_device_create+0x16c/0x9c0
[ 85.862112][ T5778] binderfs_fill_super+0x940/0xd90
[ 85.867228][ T5778] get_tree_nodev+0xb3/0x140
[ 85.871832][ T5778] vfs_get_tree+0x8c/0x280
[ 85.876248][ T5778] do_new_mount+0x2ba/0xb40
[ 85.880754][ T5778] __se_sys_mount+0x2d2/0x3c0
[ 85.885437][ T5778] do_syscall_64+0x7e/0x180
[ 85.889945][ T5778] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 85.895855][ T5778]
[ 85.898177][ T5778] Freed by task 5772:
[ 85.902162][ T5778] kasan_save_track+0x3b/0x70
[ 85.906849][ T5778] kasan_save_free_info+0x3c/0x50
[ 85.911877][ T5778] __kasan_slab_free+0x55/0x70
[ 85.916655][ T5778] kfree+0x18e/0x410
[ 85.920571][ T5778] evict+0x4e4/0x990
[ 85.924475][ T5778] __dentry_kill+0x200/0x610
[ 85.929069][ T5778] shrink_kill+0xa9/0x2c0
[ 85.933412][ T5778] shrink_dentry_list+0x2bc/0x5b0
[ 85.938447][ T5778] shrink_dcache_parent+0xc7/0x3b0
[ 85.943564][ T5778] do_one_tree+0x23/0xe0
[ 85.947816][ T5778] shrink_dcache_for_umount+0xb0/0x170
[ 85.953297][ T5778] generic_shutdown_super+0x66/0x2d0
[ 85.958601][ T5778] kill_litter_super+0x72/0xa0
[ 85.963466][ T5778] binderfs_kill_super+0x40/0x90
[ 85.968411][ T5778] deactivate_locked_super+0xc0/0x120
[ 85.973791][ T5778] cleanup_mnt+0x41f/0x4b0
[ 85.978224][ T5778] task_work_run+0x24b/0x310
[ 85.982926][ T5778] do_exit+0xa26/0x28d0
[ 85.987107][ T5778] do_group_exit+0x203/0x2b0
[ 85.991742][ T5778] get_signal+0x16ae/0x1740
[ 85.996276][ T5778] arch_do_signal_or_restart+0x92/0x860
[ 86.001853][ T5778] syscall_exit_to_user_mode+0xc9/0x320
[ 86.007451][ T5778] do_syscall_64+0x8a/0x180
[ 86.011969][ T5778] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 86.017985][ T5778]
[ 86.020312][ T5778] The buggy address belongs to the object at ffff88802d12d800
[ 86.020312][ T5778] which belongs to the cache kmalloc-512 of size 512
[ 86.034544][ T5778] The buggy address is located 8 bytes inside of
[ 86.034544][ T5778] freed 512-byte region [ffff88802d12d800, ffff88802d12da00)
[ 86.048168][ T5778]
[ 86.050491][ T5778] The buggy address belongs to the physical page:
[ 86.056931][ T5778] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2d12c
[ 86.065706][ T5778] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 86.074210][ T5778] anon flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
[ 86.082198][ T5778] page_type: f5(slab)
[ 86.086180][ T5778] raw: 00fff00000000040 ffff88801a041c80 0000000000000000 dead000000000001
[ 86.094768][ T5778] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 86.103355][ T5778] head: 00fff00000000040 ffff88801a041c80 0000000000000000 dead000000000001
[ 86.112027][ T5778] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 86.120701][ T5778] head: 00fff00000000002 ffffea0000b44b01 ffffffffffffffff 0000000000000000
[ 86.129373][ T5778] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[ 86.138036][ T5778] page dumped because: kasan: bad access detected
[ 86.144458][ T5778] page_owner tracks the page as allocated
[ 86.150166][ T5778] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5152, tgid 5152 (udevd), ts 32708466473, free_ts 32703712913
[ 86.171031][ T5778] post_alloc_hook+0x1e0/0x220
[ 86.175803][ T5778] get_page_from_freelist+0x35e2/0x3720
[ 86.181356][ T5778] __alloc_frozen_pages_noprof+0x252/0x680
[ 86.187175][ T5778] alloc_pages_mpol+0x30d/0x660
[ 86.192037][ T5778] allocate_slab+0x8f/0x390
[ 86.196577][ T5778] ___slab_alloc+0xc35/0x1490
[ 86.201261][ T5778] __slab_alloc+0x58/0xa0
[ 86.205600][ T5778] __kmalloc_cache_noprof+0x26f/0x370
[ 86.210983][ T5778] kernfs_fop_open+0x3dc/0xd00
[ 86.215864][ T5778] do_dentry_open+0xdea/0x1960
[ 86.220636][ T5778] vfs_open+0x37/0x360
[ 86.224797][ T5778] path_openat+0x2c79/0x3580
[ 86.229493][ T5778] do_filp_open+0x27b/0x4d0
[ 86.234005][ T5778] do_sys_openat2+0x13a/0x1d0
[ 86.238685][ T5778] __x64_sys_openat+0x243/0x290
[ 86.243539][ T5778] do_syscall_64+0x7e/0x180
[ 86.248042][ T5778] page last free pid 5153 tgid 5153 stack trace:
[ 86.254374][ T5778] free_frozen_pages+0xddf/0x10a0
[ 86.259408][ T5778] __put_partials+0x15e/0x1b0
[ 86.264092][ T5778] put_cpu_partial+0x17c/0x250
[ 86.268858][ T5778] __slab_free+0x28c/0x370
[ 86.273279][ T5778] qlist_free_all+0x9a/0x130
[ 86.277874][ T5778] kasan_quarantine_reduce+0x14b/0x160
[ 86.283352][ T5778] __kasan_slab_alloc+0x1f/0x70
[ 86.288398][ T5778] __kmalloc_cache_noprof+0x1d1/0x370
[ 86.293777][ T5778] kernfs_fop_open+0x3dc/0xd00
[ 86.298552][ T5778] do_dentry_open+0xdea/0x1960
[ 86.303315][ T5778] vfs_open+0x37/0x360
[ 86.307387][ T5778] path_openat+0x2c79/0x3580
[ 86.312001][ T5778] do_filp_open+0x27b/0x4d0
[ 86.316519][ T5778] do_sys_openat2+0x13a/0x1d0
[ 86.321207][ T5778] __x64_sys_openat+0x243/0x290
[ 86.326062][ T5778] do_syscall_64+0x7e/0x180
[ 86.330571][ T5778]
[ 86.332896][ T5778] Memory state around the buggy address:
[ 86.338536][ T5778] ffff88802d12d700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 86.346598][ T5778] ffff88802d12d780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 86.354771][ T5778] >ffff88802d12d800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 86.362917][ T5778] ^
[ 86.367242][ T5778] ffff88802d12d880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 86.375477][ T5778] ffff88802d12d900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 86.383565][ T5778] ==================================================================
[ 86.393431][ T5778] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 86.400665][ T5778] CPU: 1 UID: 0 PID: 5778 Comm: syz-executor Not tainted 6.14.0-rc2-syzkaller-00346-gba643b6d8440 #0
[ 86.411520][ T5778] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 86.421580][ T5778] Call Trace:
[ 86.424863][ T5778]
[ 86.427804][ T5778] dump_stack_lvl+0x23d/0x360
[ 86.432493][ T5778] ? __pfx_dump_stack_lvl+0x10/0x10
[ 86.437706][ T5778] ? __pfx__printk+0x10/0x10
[ 86.442329][ T5778] ? vscnprintf+0x59/0x80
[ 86.446687][ T5778] panic+0x345/0x880
[ 86.450609][ T5778] ? check_panic_on_warn+0x1d/0xa0
[ 86.455766][ T5778] ? __pfx_panic+0x10/0x10
[ 86.460201][ T5778] ? lockdep_hardirqs_on+0x95/0x140
[ 86.465432][ T5778] ? check_panic_on_warn+0x1d/0xa0
[ 86.470555][ T5778] ? check_panic_on_warn+0x6e/0xa0
[ 86.475778][ T5778] check_panic_on_warn+0x82/0xa0
[ 86.480728][ T5778] ? binder_add_device+0x5b/0xa0
[ 86.485678][ T5778] end_report+0x77/0x150
[ 86.490027][ T5778] kasan_report+0x150/0x180
[ 86.494562][ T5778] ? binder_add_device+0x5b/0xa0
[ 86.499521][ T5778] binder_add_device+0x5b/0xa0
[ 86.504311][ T5778] binderfs_binder_device_create+0x7bf/0x9c0
[ 86.510314][ T5778] binderfs_fill_super+0x940/0xd90
[ 86.515436][ T5778] ? __pfx_binderfs_fill_super+0x10/0x10
[ 86.521086][ T5778] ? shrinker_register+0x15c/0x220
[ 86.526222][ T5778] ? sget_fc+0x905/0x9c0
[ 86.530527][ T5778] ? __pfx_set_anon_super_fc+0x10/0x10
[ 86.535999][ T5778] ? __pfx_binderfs_fill_super+0x10/0x10
[ 86.541647][ T5778] get_tree_nodev+0xb3/0x140
[ 86.546249][ T5778] vfs_get_tree+0x8c/0x280
[ 86.550668][ T5778] do_new_mount+0x2ba/0xb40
[ 86.555177][ T5778] ? __pfx_do_new_mount+0x10/0x10
[ 86.560209][ T5778] __se_sys_mount+0x2d2/0x3c0
[ 86.564900][ T5778] ? lockdep_hardirqs_on_prepare+0x439/0x7a0
[ 86.570915][ T5778] ? __pfx___se_sys_mount+0x10/0x10
[ 86.576138][ T5778] ? __x64_sys_mount+0x1c/0xc0
[ 86.580919][ T5778] do_syscall_64+0x7e/0x180
[ 86.585442][ T5778] ? clear_bhb_loop+0x45/0xa0
[ 86.590133][ T5778] ? clear_bhb_loop+0x45/0xa0
[ 86.594830][ T5778] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 86.600737][ T5778] RIP: 0033:0x7f4778d7feba
[ 86.605165][ T5778] 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
[ 86.624775][ T5778] RSP: 002b:00007ffee669d978 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 86.633213][ T5778] RAX: ffffffffffffffda RBX: 00007f4778df16f1 RCX: 00007f4778d7feba
[ 86.641208][ T5778] RDX: 00007f4778dfcaf7 RSI: 00007f4778df16f1 RDI: 00007f4778dfcaf7
[ 86.649194][ T5778] RBP: 00007f4778df1900 R08: 0000000000000000 R09: 00000000000001ff
[ 86.657256][ T5778] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4778ddc068
[ 86.665241][ T5778] R13: 00007f4778ddc048 R14: 0000000000000009 R15: 0000000000000000
[ 86.673308][ T5778]
[ 86.677095][ T5778] Kernel Offset: disabled
[ 86.681443][ T5778] 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-build1690366235=/tmp/go-build -gno-record-gcc-switches'
git status (err=)
HEAD detached at 65e8686b0e
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=65e8686b0e9e909b6ea5629f95a9b14e81927872 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20241025-124232'" "-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=\"65e8686b0e9e909b6ea5629f95a9b14e81927872\"
/usr/bin/ld: /tmp/ccrUrDqw.o: in function `test_cover_filter()':
executor.cc:(.text+0x1426b): warning: the use of `tempnam' is dangerous, better use `mkstemp'
/usr/bin/ld: /tmp/ccrUrDqw.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