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 ffff888027dfa408 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: 0033:0x7fee7d3874ca
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:00007fee7d69ff68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fee7d401ecb RCX: 00007fee7d3874ca
RDX: 00007fee7d40ec27 RSI: 00007fee7d401ecb RDI: 00007fee7d40ec27
RBP: 00007fee7d4020c3 R08: 0000000000000000 R09: 0000000000000100
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fee7d3e41c8
R13: 00007fee7d3e41a8 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 ffff888027dfa400
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
freed 512-byte region [ffff888027dfa400, ffff888027dfa600)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x27df8
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
anon flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801ac41c80 0000000000000000 dead000000000001
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801ac41c80 0000000000000000 dead000000000001
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000002 ffffea00009f7e01 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 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5220, tgid 5220 (scsi_id), ts 37322870120, free_ts 37068217160
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]
__do_kmalloc_node mm/slub.c:4293 [inline]
__kmalloc_noprof+0x2e6/0x4c0 mm/slub.c:4306
kmalloc_noprof include/linux/slab.h:905 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
tomoyo_init_log+0x1b3d/0x2050 security/tomoyo/audit.c:275
tomoyo_supervisor+0x399/0x1a10 security/tomoyo/common.c:2198
tomoyo_audit_path_log security/tomoyo/file.c:168 [inline]
tomoyo_path_permission+0x243/0x360 security/tomoyo/file.c:587
tomoyo_path_perm+0x490/0x740 security/tomoyo/file.c:838
security_inode_getattr+0x130/0x330 security/security.c:2377
vfs_getattr+0x2a/0x3a0 fs/stat.c:243
vfs_fstat fs/stat.c:265 [inline]
vfs_fstatat+0xa8/0x130 fs/stat.c:364
__do_sys_newfstatat fs/stat.c:530 [inline]
__se_sys_newfstatat fs/stat.c:524 [inline]
__x64_sys_newfstatat+0x11d/0x1a0 fs/stat.c:524
page last free pid 5214 tgid 5214 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
rcu_do_batch kernel/rcu/tree.c:2546 [inline]
rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2802
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
__do_softirq kernel/softirq.c:595 [inline]
invoke_softirq kernel/softirq.c:435 [inline]
__irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
Memory state around the buggy address:
ffff888027dfa300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff888027dfa380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888027dfa400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888027dfa480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888027dfa500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Warning: Permanently added '10.128.1.91' (ED25519) to the list of known hosts.
2025/01/31 09:39:58 ignoring optional flag "sandboxArg"="0"
2025/01/31 09:39:59 parsed 1 programs
[ 89.772703][ T5835] cgroup: Unknown subsys name 'net'
[ 89.911636][ T5835] cgroup: Unknown subsys name 'cpuset'
[ 89.920770][ T5835] cgroup: Unknown subsys name 'rlimit'
[ 91.564850][ T5835] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 92.800053][ T25] cfg80211: failed to load regulatory.db
[ 94.591145][ 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.
[ 94.850577][ T5850] ==================================================================
[ 94.858673][ T5850] BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0
[ 94.866664][ T5850] Write of size 8 at addr ffff888027dfa408 by task syz-executor/5850
[ 94.874719][ T5850]
[ 94.877051][ T5850] CPU: 1 UID: 0 PID: 5850 Comm: syz-executor Not tainted 6.13.0-next-20250131-syzkaller-10663-gdf4b2bbff898-dirty #0
[ 94.877064][ T5850] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 94.877076][ T5850] Call Trace:
[ 94.877083][ T5850]
[ 94.877088][ T5850] dump_stack_lvl+0x241/0x360
[ 94.877105][ T5850] ? __pfx_dump_stack_lvl+0x10/0x10
[ 94.877114][ T5850] ? __pfx__printk+0x10/0x10
[ 94.877125][ T5850] ? _printk+0xd5/0x120
[ 94.877138][ T5850] ? __virt_addr_valid+0x183/0x530
[ 94.877153][ T5850] ? __virt_addr_valid+0x183/0x530
[ 94.877166][ T5850] print_report+0x169/0x550
[ 94.877183][ T5850] ? __virt_addr_valid+0x183/0x530
[ 94.877195][ T5850] ? __virt_addr_valid+0x183/0x530
[ 94.877206][ T5850] ? __virt_addr_valid+0x45f/0x530
[ 94.877218][ T5850] ? __phys_addr+0xba/0x170
[ 94.877231][ T5850] ? binder_add_device+0x5f/0xa0
[ 94.877241][ T5850] kasan_report+0x143/0x180
[ 94.877251][ T5850] ? binder_add_device+0x5f/0xa0
[ 94.877261][ T5850] binder_add_device+0x5f/0xa0
[ 94.877270][ T5850] binderfs_binder_device_create+0x7bf/0x9c0
[ 94.877288][ T5850] binderfs_fill_super+0x944/0xd90
[ 94.877303][ T5850] ? __pfx_binderfs_fill_super+0x10/0x10
[ 94.877322][ T5850] ? shrinker_register+0x160/0x230
[ 94.877336][ T5850] ? sget_fc+0x909/0x9c0
[ 94.877350][ T5850] ? __pfx_set_anon_super_fc+0x10/0x10
[ 94.877362][ T5850] ? __pfx_binderfs_fill_super+0x10/0x10
[ 94.877374][ T5850] get_tree_nodev+0xb7/0x140
[ 94.877387][ T5850] vfs_get_tree+0x90/0x2b0
[ 94.877400][ T5850] do_new_mount+0x2be/0xb40
[ 94.877412][ T5850] ? __pfx_do_new_mount+0x10/0x10
[ 94.877423][ T5850] __se_sys_mount+0x2d6/0x3c0
[ 94.877434][ T5850] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 94.877449][ T5850] ? __pfx___se_sys_mount+0x10/0x10
[ 94.877458][ T5850] ? do_syscall_64+0x100/0x230
[ 94.877471][ T5850] ? __x64_sys_mount+0x20/0xc0
[ 94.877481][ T5850] do_syscall_64+0xf3/0x230
[ 94.877491][ T5850] ? clear_bhb_loop+0x35/0x90
[ 94.877506][ T5850] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 94.877519][ T5850] RIP: 0033:0x7fee7d3874ca
[ 94.877534][ 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
[ 94.877542][ T5850] RSP: 002b:00007fee7d69ff68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 94.877556][ T5850] RAX: ffffffffffffffda RBX: 00007fee7d401ecb RCX: 00007fee7d3874ca
[ 94.877563][ T5850] RDX: 00007fee7d40ec27 RSI: 00007fee7d401ecb RDI: 00007fee7d40ec27
[ 94.877569][ T5850] RBP: 00007fee7d4020c3 R08: 0000000000000000 R09: 0000000000000100
[ 94.877576][ T5850] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fee7d3e41c8
[ 94.877582][ T5850] R13: 00007fee7d3e41a8 R14: 0000000000000009 R15: 0000000000000000
[ 94.877592][ T5850]
[ 94.877595][ T5850]
[ 95.151744][ T5850] Allocated by task 5845:
[ 95.156074][ T5850] kasan_save_track+0x3f/0x80
[ 95.160760][ T5850] __kasan_kmalloc+0x98/0xb0
[ 95.165342][ T5850] __kmalloc_cache_noprof+0x243/0x390
[ 95.170877][ T5850] binderfs_binder_device_create+0x16c/0x9c0
[ 95.176847][ T5850] binderfs_fill_super+0x944/0xd90
[ 95.181947][ T5850] get_tree_nodev+0xb7/0x140
[ 95.186521][ T5850] vfs_get_tree+0x90/0x2b0
[ 95.190930][ T5850] do_new_mount+0x2be/0xb40
[ 95.195413][ T5850] __se_sys_mount+0x2d6/0x3c0
[ 95.200071][ T5850] do_syscall_64+0xf3/0x230
[ 95.204658][ T5850] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 95.210568][ T5850]
[ 95.212889][ T5850] Freed by task 5845:
[ 95.216898][ T5850] kasan_save_track+0x3f/0x80
[ 95.221651][ T5850] kasan_save_free_info+0x40/0x50
[ 95.226757][ T5850] __kasan_slab_free+0x59/0x70
[ 95.231502][ T5850] kfree+0x196/0x430
[ 95.235377][ T5850] evict+0x4e8/0x9a0
[ 95.239284][ T5850] __dentry_kill+0x20d/0x630
[ 95.243868][ T5850] shrink_kill+0xa9/0x2c0
[ 95.248179][ T5850] shrink_dentry_list+0x2c0/0x5b0
[ 95.253181][ T5850] shrink_dcache_parent+0xcb/0x3b0
[ 95.258289][ T5850] do_one_tree+0x23/0xe0
[ 95.262520][ T5850] shrink_dcache_for_umount+0xb4/0x180
[ 95.267961][ T5850] generic_shutdown_super+0x6a/0x2d0
[ 95.273226][ T5850] kill_litter_super+0x76/0xb0
[ 95.277969][ T5850] binderfs_kill_super+0x44/0x90
[ 95.282895][ T5850] deactivate_locked_super+0xc4/0x130
[ 95.288262][ T5850] cleanup_mnt+0x41f/0x4b0
[ 95.292675][ T5850] task_work_run+0x24f/0x310
[ 95.297275][ T5850] do_exit+0xa2a/0x28e0
[ 95.301413][ T5850] do_group_exit+0x207/0x2c0
[ 95.305985][ T5850] get_signal+0x16b2/0x1750
[ 95.310579][ T5850] arch_do_signal_or_restart+0x96/0x860
[ 95.316195][ T5850] syscall_exit_to_user_mode+0xce/0x340
[ 95.321750][ T5850] do_syscall_64+0x100/0x230
[ 95.326330][ T5850] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 95.332218][ T5850]
[ 95.334525][ T5850] The buggy address belongs to the object at ffff888027dfa400
[ 95.334525][ T5850] which belongs to the cache kmalloc-512 of size 512
[ 95.348561][ T5850] The buggy address is located 8 bytes inside of
[ 95.348561][ T5850] freed 512-byte region [ffff888027dfa400, ffff888027dfa600)
[ 95.362209][ T5850]
[ 95.364521][ T5850] The buggy address belongs to the physical page:
[ 95.370919][ T5850] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x27df8
[ 95.379752][ T5850] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 95.388234][ T5850] anon flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
[ 95.396204][ T5850] page_type: f5(slab)
[ 95.400174][ T5850] raw: 00fff00000000040 ffff88801ac41c80 0000000000000000 dead000000000001
[ 95.408751][ T5850] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 95.417332][ T5850] head: 00fff00000000040 ffff88801ac41c80 0000000000000000 dead000000000001
[ 95.426081][ T5850] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 95.434732][ T5850] head: 00fff00000000002 ffffea00009f7e01 ffffffffffffffff 0000000000000000
[ 95.443451][ T5850] head: ffff888000000004 0000000000000000 00000000ffffffff 0000000000000000
[ 95.452139][ T5850] page dumped because: kasan: bad access detected
[ 95.458561][ T5850] page_owner tracks the page as allocated
[ 95.464262][ T5850] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5220, tgid 5220 (scsi_id), ts 37322870120, free_ts 37068217160
[ 95.484506][ T5850] post_alloc_hook+0x1f4/0x240
[ 95.489275][ T5850] get_page_from_freelist+0x365c/0x37a0
[ 95.494842][ T5850] __alloc_frozen_pages_noprof+0x292/0x710
[ 95.500651][ T5850] alloc_pages_mpol+0x311/0x660
[ 95.505502][ T5850] allocate_slab+0x8f/0x3a0
[ 95.510006][ T5850] ___slab_alloc+0xc27/0x14a0
[ 95.514677][ T5850] __slab_alloc+0x58/0xa0
[ 95.519005][ T5850] __kmalloc_noprof+0x2e6/0x4c0
[ 95.523856][ T5850] tomoyo_init_log+0x1b3d/0x2050
[ 95.528806][ T5850] tomoyo_supervisor+0x399/0x1a10
[ 95.533854][ T5850] tomoyo_path_permission+0x243/0x360
[ 95.539256][ T5850] tomoyo_path_perm+0x490/0x740
[ 95.544194][ T5850] security_inode_getattr+0x130/0x330
[ 95.549556][ T5850] vfs_getattr+0x2a/0x3a0
[ 95.553869][ T5850] vfs_fstatat+0xa8/0x130
[ 95.558184][ T5850] __x64_sys_newfstatat+0x11d/0x1a0
[ 95.563367][ T5850] page last free pid 5214 tgid 5214 stack trace:
[ 95.569686][ T5850] free_frozen_pages+0xe0d/0x10e0
[ 95.574709][ T5850] rcu_core+0xaaa/0x17a0
[ 95.578934][ T5850] handle_softirqs+0x2d4/0x9b0
[ 95.583690][ T5850] __irq_exit_rcu+0xf7/0x220
[ 95.588268][ T5850] irq_exit_rcu+0x9/0x30
[ 95.592490][ T5850] sysvec_apic_timer_interrupt+0xa6/0xc0
[ 95.598100][ T5850] asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 95.604065][ T5850]
[ 95.606407][ T5850] Memory state around the buggy address:
[ 95.612022][ T5850] ffff888027dfa300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 95.620087][ T5850] ffff888027dfa380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 95.628217][ T5850] >ffff888027dfa400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 95.636252][ T5850] ^
[ 95.640563][ T5850] ffff888027dfa480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 95.648605][ T5850] ffff888027dfa500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 95.656642][ T5850] ==================================================================
[ 95.665328][ T5850] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 95.672892][ T5850] CPU: 1 UID: 0 PID: 5850 Comm: syz-executor Not tainted 6.13.0-next-20250131-syzkaller-10663-gdf4b2bbff898-dirty #0
[ 95.685334][ T5850] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 95.695383][ T5850] Call Trace:
[ 95.698699][ T5850]
[ 95.701681][ T5850] dump_stack_lvl+0x241/0x360
[ 95.706346][ T5850] ? __pfx_dump_stack_lvl+0x10/0x10
[ 95.711550][ T5850] ? __pfx__printk+0x10/0x10
[ 95.716137][ T5850] ? preempt_schedule+0xe1/0xf0
[ 95.720984][ T5850] ? vscnprintf+0x5d/0x90
[ 95.725301][ T5850] panic+0x349/0x880
[ 95.729278][ T5850] ? check_panic_on_warn+0x21/0xb0
[ 95.734395][ T5850] ? __pfx_panic+0x10/0x10
[ 95.738852][ T5850] ? _raw_spin_unlock_irqrestore+0x130/0x140
[ 95.744923][ T5850] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[ 95.751330][ T5850] ? print_report+0x502/0x550
[ 95.756092][ T5850] check_panic_on_warn+0x86/0xb0
[ 95.761031][ T5850] ? binder_add_device+0x5f/0xa0
[ 95.765959][ T5850] end_report+0x77/0x160
[ 95.770209][ T5850] kasan_report+0x154/0x180
[ 95.774716][ T5850] ? binder_add_device+0x5f/0xa0
[ 95.779659][ T5850] binder_add_device+0x5f/0xa0
[ 95.784416][ T5850] binderfs_binder_device_create+0x7bf/0x9c0
[ 95.790405][ T5850] binderfs_fill_super+0x944/0xd90
[ 95.795591][ T5850] ? __pfx_binderfs_fill_super+0x10/0x10
[ 95.801229][ T5850] ? shrinker_register+0x160/0x230
[ 95.806419][ T5850] ? sget_fc+0x909/0x9c0
[ 95.810659][ T5850] ? __pfx_set_anon_super_fc+0x10/0x10
[ 95.816127][ T5850] ? __pfx_binderfs_fill_super+0x10/0x10
[ 95.821757][ T5850] get_tree_nodev+0xb7/0x140
[ 95.826434][ T5850] vfs_get_tree+0x90/0x2b0
[ 95.830853][ T5850] do_new_mount+0x2be/0xb40
[ 95.835357][ T5850] ? __pfx_do_new_mount+0x10/0x10
[ 95.840376][ T5850] __se_sys_mount+0x2d6/0x3c0
[ 95.845045][ T5850] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 95.851019][ T5850] ? __pfx___se_sys_mount+0x10/0x10
[ 95.856208][ T5850] ? do_syscall_64+0x100/0x230
[ 95.860968][ T5850] ? __x64_sys_mount+0x20/0xc0
[ 95.865721][ T5850] do_syscall_64+0xf3/0x230
[ 95.870217][ T5850] ? clear_bhb_loop+0x35/0x90
[ 95.874890][ T5850] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 95.880788][ T5850] RIP: 0033:0x7fee7d3874ca
[ 95.885194][ 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
[ 95.905065][ T5850] RSP: 002b:00007fee7d69ff68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 95.913473][ T5850] RAX: ffffffffffffffda RBX: 00007fee7d401ecb RCX: 00007fee7d3874ca
[ 95.921520][ T5850] RDX: 00007fee7d40ec27 RSI: 00007fee7d401ecb RDI: 00007fee7d40ec27
[ 95.929573][ T5850] RBP: 00007fee7d4020c3 R08: 0000000000000000 R09: 0000000000000100
[ 95.937641][ T5850] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fee7d3e41c8
[ 95.945713][ T5850] R13: 00007fee7d3e41a8 R14: 0000000000000009 R15: 0000000000000000
[ 95.953953][ T5850]
[ 95.957269][ T5850] Kernel Offset: disabled
[ 95.961589][ 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-build4237604181=/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/cc2LbsSU.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