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 ffff88802f5a7008 by task syz-executor/5850
CPU: 1 UID: 0 PID: 5850 Comm: syz-executor Not tainted 6.13.0-next-20250131-syzkaller-10663-gdf4b2bbff898-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:378 [inline]
print_report+0x169/0x550 mm/kasan/report.c:489
kasan_report+0x143/0x180 mm/kasan/report.c:602
hlist_add_head include/linux/list.h:1026 [inline]
binder_add_device+0x5f/0xa0 drivers/android/binder.c:6932
binderfs_binder_device_create+0x7bf/0x9c0 drivers/android/binderfs.c:210
binderfs_fill_super+0x944/0xd90 drivers/android/binderfs.c:729
vfs_get_super fs/super.c:1280 [inline]
get_tree_nodev+0xb7/0x140 fs/super.c:1299
vfs_get_tree+0x90/0x2b0 fs/super.c:1814
do_new_mount+0x2be/0xb40 fs/namespace.c:3560
do_mount fs/namespace.c:3900 [inline]
__do_sys_mount fs/namespace.c:4111 [inline]
__se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4088
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f11fd3874ca
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:00007ffc2dfd0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f11fd401ecb RCX: 00007f11fd3874ca
RDX: 00007f11fd40ec27 RSI: 00007f11fd401ecb RDI: 00007f11fd40ec27
RBP: 00007f11fd4020c3 R08: 0000000000000000 R09: 00000000000001ff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f11fd3e41c8
R13: 00007f11fd3e41a8 R14: 0000000000000009 R15: 0000000000000000
Allocated by task 5845:
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 5845:
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 ffff88802f5a7000
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
freed 512-byte region [ffff88802f5a7000, ffff88802f5a7200)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2f5a4
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801ac41c80 ffffea0000c51400 dead000000000002
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801ac41c80 ffffea0000c51400 dead000000000002
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000002 ffffea0000bd6901 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 5208, tgid 5208 (udevd), ts 36812669787, free_ts 33453675943
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x365c/0x37a0 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4739
alloc_pages_mpol+0x311/0x660 mm/mempolicy.c:2270
alloc_slab_page mm/slub.c:2423 [inline]
allocate_slab+0x8f/0x3a0 mm/slub.c:2587
new_slab mm/slub.c:2640 [inline]
___slab_alloc+0xc27/0x14a0 mm/slub.c:3826
__slab_alloc+0x58/0xa0 mm/slub.c:3916
__slab_alloc_node mm/slub.c:3991 [inline]
slab_alloc_node mm/slub.c:4152 [inline]
__kmalloc_cache_noprof+0x27b/0x390 mm/slub.c:4320
kmalloc_noprof include/linux/slab.h:901 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
kernfs_fop_open+0x3e0/0xd10 fs/kernfs/file.c:623
do_dentry_open+0xdec/0x1960 fs/open.c:955
vfs_open+0x3b/0x370 fs/open.c:1085
do_open fs/namei.c:3830 [inline]
path_openat+0x2c81/0x3590 fs/namei.c:3989
do_filp_open+0x27f/0x4e0 fs/namei.c:4016
do_sys_openat2+0x13e/0x1d0 fs/open.c:1427
do_sys_open fs/open.c:1442 [inline]
__do_sys_openat fs/open.c:1458 [inline]
__se_sys_openat fs/open.c:1453 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1453
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
page last free pid 5222 tgid 5222 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
discard_slab mm/slub.c:2684 [inline]
__put_partials+0x160/0x1c0 mm/slub.c:3153
put_cpu_partial+0x17c/0x250 mm/slub.c:3228
__slab_free+0x290/0x380 mm/slub.c:4479
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_lru_noprof+0x1dd/0x390 mm/slub.c:4183
alloc_inode+0x87/0x1a0 fs/inode.c:338
iget_locked+0xf1/0x5a0 fs/inode.c:1487
kernfs_get_inode+0x51/0x760 fs/kernfs/inode.c:251
kernfs_iop_lookup+0x266/0x390 fs/kernfs/dir.c:1215
__lookup_slow+0x296/0x400 fs/namei.c:1793
lookup_slow+0x53/0x70 fs/namei.c:1810
walk_component+0x2e1/0x410 fs/namei.c:2114
lookup_last fs/namei.c:2612 [inline]
path_lookupat+0x16f/0x450 fs/namei.c:2636
Memory state around the buggy address:
ffff88802f5a6f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88802f5a6f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88802f5a7000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88802f5a7080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88802f5a7100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Warning: Permanently added '10.128.10.42' (ED25519) to the list of known hosts.
2025/01/31 10:47:30 ignoring optional flag "sandboxArg"="0"
2025/01/31 10:47:30 parsed 1 programs
[ 88.726376][ T5835] cgroup: Unknown subsys name 'net'
[ 88.901155][ T5835] cgroup: Unknown subsys name 'cpuset'
[ 88.910605][ T5835] cgroup: Unknown subsys name 'rlimit'
[ 90.528886][ T5835] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 92.308264][ T908] cfg80211: failed to load regulatory.db
[ 93.454212][ T5845] 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.
[ 93.842453][ T5850] ==================================================================
[ 93.850542][ T5850] BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0
[ 93.858366][ T5850] Write of size 8 at addr ffff88802f5a7008 by task syz-executor/5850
[ 93.866421][ T5850]
[ 93.868760][ T5850] CPU: 1 UID: 0 PID: 5850 Comm: syz-executor Not tainted 6.13.0-next-20250131-syzkaller-10663-gdf4b2bbff898-dirty #0
[ 93.868771][ T5850] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 93.868783][ T5850] Call Trace:
[ 93.868789][ T5850]
[ 93.868793][ T5850] dump_stack_lvl+0x241/0x360
[ 93.868807][ T5850] ? __pfx_dump_stack_lvl+0x10/0x10
[ 93.868817][ T5850] ? __pfx__printk+0x10/0x10
[ 93.868827][ T5850] ? _printk+0xd5/0x120
[ 93.868835][ T5850] ? __virt_addr_valid+0x183/0x530
[ 93.868848][ T5850] ? __virt_addr_valid+0x183/0x530
[ 93.868861][ T5850] print_report+0x169/0x550
[ 93.868875][ T5850] ? __virt_addr_valid+0x183/0x530
[ 93.868888][ T5850] ? __virt_addr_valid+0x183/0x530
[ 93.868899][ T5850] ? __virt_addr_valid+0x45f/0x530
[ 93.868911][ T5850] ? __phys_addr+0xba/0x170
[ 93.868923][ T5850] ? binder_add_device+0x5f/0xa0
[ 93.868938][ T5850] kasan_report+0x143/0x180
[ 93.868947][ T5850] ? binder_add_device+0x5f/0xa0
[ 93.868958][ T5850] binder_add_device+0x5f/0xa0
[ 93.868967][ T5850] binderfs_binder_device_create+0x7bf/0x9c0
[ 93.868983][ T5850] binderfs_fill_super+0x944/0xd90
[ 93.868998][ T5850] ? __pfx_binderfs_fill_super+0x10/0x10
[ 93.869017][ T5850] ? shrinker_register+0x160/0x230
[ 93.869030][ T5850] ? sget_fc+0x909/0x9c0
[ 93.869042][ T5850] ? __pfx_set_anon_super_fc+0x10/0x10
[ 93.869053][ T5850] ? __pfx_binderfs_fill_super+0x10/0x10
[ 93.869066][ T5850] get_tree_nodev+0xb7/0x140
[ 93.869078][ T5850] vfs_get_tree+0x90/0x2b0
[ 93.869091][ T5850] do_new_mount+0x2be/0xb40
[ 93.869102][ T5850] ? __pfx_do_new_mount+0x10/0x10
[ 93.869113][ T5850] __se_sys_mount+0x2d6/0x3c0
[ 93.869122][ T5850] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 93.869137][ T5850] ? __pfx___se_sys_mount+0x10/0x10
[ 93.869146][ T5850] ? do_syscall_64+0x100/0x230
[ 93.869158][ T5850] ? __x64_sys_mount+0x20/0xc0
[ 93.869167][ T5850] do_syscall_64+0xf3/0x230
[ 93.869178][ T5850] ? clear_bhb_loop+0x35/0x90
[ 93.869191][ T5850] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 93.869203][ T5850] RIP: 0033:0x7f11fd3874ca
[ 93.869216][ T5850] 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
[ 93.869223][ T5850] RSP: 002b:00007ffc2dfd0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 93.869237][ T5850] RAX: ffffffffffffffda RBX: 00007f11fd401ecb RCX: 00007f11fd3874ca
[ 93.869244][ T5850] RDX: 00007f11fd40ec27 RSI: 00007f11fd401ecb RDI: 00007f11fd40ec27
[ 93.869250][ T5850] RBP: 00007f11fd4020c3 R08: 0000000000000000 R09: 00000000000001ff
[ 93.869256][ T5850] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f11fd3e41c8
[ 93.869262][ T5850] R13: 00007f11fd3e41a8 R14: 0000000000000009 R15: 0000000000000000
[ 93.869271][ T5850]
[ 93.869275][ T5850]
[ 94.143431][ T5850] Allocated by task 5845:
[ 94.147747][ T5850] kasan_save_track+0x3f/0x80
[ 94.152428][ T5850] __kasan_kmalloc+0x98/0xb0
[ 94.157016][ T5850] __kmalloc_cache_noprof+0x243/0x390
[ 94.162461][ T5850] binderfs_binder_device_create+0x16c/0x9c0
[ 94.168431][ T5850] binderfs_fill_super+0x944/0xd90
[ 94.173528][ T5850] get_tree_nodev+0xb7/0x140
[ 94.178110][ T5850] vfs_get_tree+0x90/0x2b0
[ 94.182514][ T5850] do_new_mount+0x2be/0xb40
[ 94.187003][ T5850] __se_sys_mount+0x2d6/0x3c0
[ 94.191703][ T5850] do_syscall_64+0xf3/0x230
[ 94.196213][ T5850] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 94.202118][ T5850]
[ 94.204432][ T5850] Freed by task 5845:
[ 94.208397][ T5850] kasan_save_track+0x3f/0x80
[ 94.213175][ T5850] kasan_save_free_info+0x40/0x50
[ 94.218290][ T5850] __kasan_slab_free+0x59/0x70
[ 94.223052][ T5850] kfree+0x196/0x430
[ 94.226933][ T5850] evict+0x4e8/0x9a0
[ 94.230823][ T5850] __dentry_kill+0x20d/0x630
[ 94.235397][ T5850] shrink_kill+0xa9/0x2c0
[ 94.239711][ T5850] shrink_dentry_list+0x2c0/0x5b0
[ 94.244818][ T5850] shrink_dcache_parent+0xcb/0x3b0
[ 94.249919][ T5850] do_one_tree+0x23/0xe0
[ 94.254155][ T5850] shrink_dcache_for_umount+0xb4/0x180
[ 94.259601][ T5850] generic_shutdown_super+0x6a/0x2d0
[ 94.264898][ T5850] kill_litter_super+0x76/0xb0
[ 94.269669][ T5850] binderfs_kill_super+0x44/0x90
[ 94.274600][ T5850] deactivate_locked_super+0xc4/0x130
[ 94.279959][ T5850] cleanup_mnt+0x41f/0x4b0
[ 94.284362][ T5850] task_work_run+0x24f/0x310
[ 94.288947][ T5850] do_exit+0xa2a/0x28e0
[ 94.293093][ T5850] do_group_exit+0x207/0x2c0
[ 94.297678][ T5850] get_signal+0x16b2/0x1750
[ 94.302167][ T5850] arch_do_signal_or_restart+0x96/0x860
[ 94.307703][ T5850] syscall_exit_to_user_mode+0xce/0x340
[ 94.313248][ T5850] do_syscall_64+0x100/0x230
[ 94.318024][ T5850] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 94.323908][ T5850]
[ 94.326224][ T5850] The buggy address belongs to the object at ffff88802f5a7000
[ 94.326224][ T5850] which belongs to the cache kmalloc-512 of size 512
[ 94.340271][ T5850] The buggy address is located 8 bytes inside of
[ 94.340271][ T5850] freed 512-byte region [ffff88802f5a7000, ffff88802f5a7200)
[ 94.353877][ T5850]
[ 94.356187][ T5850] The buggy address belongs to the physical page:
[ 94.362598][ T5850] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2f5a4
[ 94.371350][ T5850] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 94.379835][ T5850] flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
[ 94.387480][ T5850] page_type: f5(slab)
[ 94.391497][ T5850] raw: 00fff00000000040 ffff88801ac41c80 ffffea0000c51400 dead000000000002
[ 94.400072][ T5850] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 94.408671][ T5850] head: 00fff00000000040 ffff88801ac41c80 ffffea0000c51400 dead000000000002
[ 94.417423][ T5850] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 94.426082][ T5850] head: 00fff00000000002 ffffea0000bd6901 ffffffffffffffff 0000000000000000
[ 94.434909][ T5850] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[ 94.443565][ T5850] page dumped because: kasan: bad access detected
[ 94.450186][ T5850] page_owner tracks the page as allocated
[ 94.455894][ T5850] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5208, tgid 5208 (udevd), ts 36812669787, free_ts 33453675943
[ 94.476671][ T5850] post_alloc_hook+0x1f4/0x240
[ 94.481429][ T5850] get_page_from_freelist+0x365c/0x37a0
[ 94.487055][ T5850] __alloc_frozen_pages_noprof+0x292/0x710
[ 94.492850][ T5850] alloc_pages_mpol+0x311/0x660
[ 94.497684][ T5850] allocate_slab+0x8f/0x3a0
[ 94.502184][ T5850] ___slab_alloc+0xc27/0x14a0
[ 94.506863][ T5850] __slab_alloc+0x58/0xa0
[ 94.511180][ T5850] __kmalloc_cache_noprof+0x27b/0x390
[ 94.516542][ T5850] kernfs_fop_open+0x3e0/0xd10
[ 94.521293][ T5850] do_dentry_open+0xdec/0x1960
[ 94.526041][ T5850] vfs_open+0x3b/0x370
[ 94.530136][ T5850] path_openat+0x2c81/0x3590
[ 94.534717][ T5850] do_filp_open+0x27f/0x4e0
[ 94.539209][ T5850] do_sys_openat2+0x13e/0x1d0
[ 94.543873][ T5850] __x64_sys_openat+0x247/0x2a0
[ 94.548716][ T5850] do_syscall_64+0xf3/0x230
[ 94.553204][ T5850] page last free pid 5222 tgid 5222 stack trace:
[ 94.559511][ T5850] free_frozen_pages+0xe0d/0x10e0
[ 94.564536][ T5850] __put_partials+0x160/0x1c0
[ 94.569202][ T5850] put_cpu_partial+0x17c/0x250
[ 94.573977][ T5850] __slab_free+0x290/0x380
[ 94.578413][ T5850] qlist_free_all+0x9a/0x140
[ 94.583008][ T5850] kasan_quarantine_reduce+0x14f/0x170
[ 94.588463][ T5850] __kasan_slab_alloc+0x23/0x80
[ 94.593307][ T5850] kmem_cache_alloc_lru_noprof+0x1dd/0x390
[ 94.599402][ T5850] alloc_inode+0x87/0x1a0
[ 94.603742][ T5850] iget_locked+0xf1/0x5a0
[ 94.608067][ T5850] kernfs_get_inode+0x51/0x760
[ 94.612823][ T5850] kernfs_iop_lookup+0x266/0x390
[ 94.617753][ T5850] __lookup_slow+0x296/0x400
[ 94.622329][ T5850] lookup_slow+0x53/0x70
[ 94.626564][ T5850] walk_component+0x2e1/0x410
[ 94.631243][ T5850] path_lookupat+0x16f/0x450
[ 94.635842][ T5850]
[ 94.638188][ T5850] Memory state around the buggy address:
[ 94.643915][ T5850] ffff88802f5a6f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 94.651969][ T5850] ffff88802f5a6f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 94.660018][ T5850] >ffff88802f5a7000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 94.668065][ T5850] ^
[ 94.672378][ T5850] ffff88802f5a7080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 94.680422][ T5850] ffff88802f5a7100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 94.688464][ T5850] ==================================================================
[ 94.696970][ T5850] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 94.704180][ T5850] CPU: 0 UID: 0 PID: 5850 Comm: syz-executor Not tainted 6.13.0-next-20250131-syzkaller-10663-gdf4b2bbff898-dirty #0
[ 94.716425][ T5850] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 94.726494][ T5850] Call Trace:
[ 94.729771][ T5850]
[ 94.732708][ T5850] dump_stack_lvl+0x241/0x360
[ 94.737384][ T5850] ? __pfx_dump_stack_lvl+0x10/0x10
[ 94.742570][ T5850] ? __pfx__printk+0x10/0x10
[ 94.747149][ T5850] ? preempt_schedule+0xe1/0xf0
[ 94.751989][ T5850] ? vscnprintf+0x5d/0x90
[ 94.756312][ T5850] panic+0x349/0x880
[ 94.760280][ T5850] ? check_panic_on_warn+0x21/0xb0
[ 94.765380][ T5850] ? __pfx_panic+0x10/0x10
[ 94.769896][ T5850] ? _raw_spin_unlock_irqrestore+0x130/0x140
[ 94.776009][ T5850] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[ 94.782324][ T5850] ? print_report+0x502/0x550
[ 94.787097][ T5850] check_panic_on_warn+0x86/0xb0
[ 94.792031][ T5850] ? binder_add_device+0x5f/0xa0
[ 94.796961][ T5850] end_report+0x77/0x160
[ 94.801562][ T5850] kasan_report+0x154/0x180
[ 94.806053][ T5850] ? binder_add_device+0x5f/0xa0
[ 94.810979][ T5850] binder_add_device+0x5f/0xa0
[ 94.815992][ T5850] binderfs_binder_device_create+0x7bf/0x9c0
[ 94.821976][ T5850] binderfs_fill_super+0x944/0xd90
[ 94.827083][ T5850] ? __pfx_binderfs_fill_super+0x10/0x10
[ 94.832718][ T5850] ? shrinker_register+0x160/0x230
[ 94.837835][ T5850] ? sget_fc+0x909/0x9c0
[ 94.842176][ T5850] ? __pfx_set_anon_super_fc+0x10/0x10
[ 94.847636][ T5850] ? __pfx_binderfs_fill_super+0x10/0x10
[ 94.853262][ T5850] get_tree_nodev+0xb7/0x140
[ 94.857867][ T5850] vfs_get_tree+0x90/0x2b0
[ 94.862291][ T5850] do_new_mount+0x2be/0xb40
[ 94.866797][ T5850] ? __pfx_do_new_mount+0x10/0x10
[ 94.871911][ T5850] __se_sys_mount+0x2d6/0x3c0
[ 94.876590][ T5850] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 94.882564][ T5850] ? __pfx___se_sys_mount+0x10/0x10
[ 94.887759][ T5850] ? do_syscall_64+0x100/0x230
[ 94.892519][ T5850] ? __x64_sys_mount+0x20/0xc0
[ 94.897271][ T5850] do_syscall_64+0xf3/0x230
[ 94.901764][ T5850] ? clear_bhb_loop+0x35/0x90
[ 94.906440][ T5850] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 94.912325][ T5850] RIP: 0033:0x7f11fd3874ca
[ 94.916732][ T5850] 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
[ 94.936324][ T5850] RSP: 002b:00007ffc2dfd0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 94.944742][ T5850] RAX: ffffffffffffffda RBX: 00007f11fd401ecb RCX: 00007f11fd3874ca
[ 94.952800][ T5850] RDX: 00007f11fd40ec27 RSI: 00007f11fd401ecb RDI: 00007f11fd40ec27
[ 94.960764][ T5850] RBP: 00007f11fd4020c3 R08: 0000000000000000 R09: 00000000000001ff
[ 94.968738][ T5850] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f11fd3e41c8
[ 94.976698][ T5850] R13: 00007f11fd3e41a8 R14: 0000000000000009 R15: 0000000000000000
[ 94.984691][ T5850]
[ 94.988011][ T5850] Kernel Offset: disabled
[ 94.992423][ T5850] 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-build4162096263=/tmp/go-build -gno-record-gcc-switches'
git status (err=)
HEAD detached at f3558dbf03
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=f3558dbf032eab2b77c1cb11b9ce2baffe7838d3 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20250103-110009'" "-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=\"f3558dbf032eab2b77c1cb11b9ce2baffe7838d3\"
/usr/bin/ld: /tmp/ccO8Sibg.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