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 ffff888142b69008 by task syz-executor/5854
CPU: 0 UID: 0 PID: 5854 Comm: syz-executor Not tainted 6.13.0-next-20250124-syzkaller-10205-g5ffa57f6eece #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: 0033:0x7fd7c5b7feba
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:00007ffc573ce378 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fd7c5bf16f1 RCX: 00007fd7c5b7feba
RDX: 00007fd7c5bfcaf7 RSI: 00007fd7c5bf16f1 RDI: 00007fd7c5bfcaf7
RBP: 00007fd7c5bf1900 R08: 0000000000000000 R09: 00000000000001ff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd7c5bdc068
R13: 00007fd7c5bdc048 R14: 0000000000000009 R15: 0000000000000000
Allocated by task 5846:
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 5846:
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:637
shrink_kill+0xa9/0x2c0 fs/dcache.c:1082
shrink_dentry_list+0x2c0/0x5b0 fs/dcache.c:1109
shrink_dcache_parent+0xcb/0x3b0
do_one_tree+0x23/0xe0 fs/dcache.c:1572
shrink_dcache_for_umount+0xb4/0x180 fs/dcache.c:1589
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 ffff888142b69000
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
freed 512-byte region [ffff888142b69000, ffff888142b69200)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x142b68
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x57ff00000000040(head|node=1|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 057ff00000000040 ffff88801ac41c80 ffffea0005367e00 dead000000000002
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 057ff00000000040 ffff88801ac41c80 ffffea0005367e00 dead000000000002
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 057ff00000000002 ffffea00050ada01 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 1, tgid 1 (swapper/0), ts 7101922972, free_ts 0
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_node_noprof+0x294/0x3a0 mm/slub.c:4333
kmalloc_node_noprof include/linux/slab.h:924 [inline]
blkg_alloc+0xd6/0x810 block/blk-cgroup.c:311
blkcg_init_disk+0x55/0x120 block/blk-cgroup.c:1467
__alloc_disk_node+0x2d2/0x580 block/genhd.c:1408
__blk_mq_alloc_disk+0x218/0x370 block/blk-mq.c:4394
loop_add+0x441/0xaf0 drivers/block/loop.c:2050
loop_init+0x168/0x220 drivers/block/loop.c:2285
do_one_initcall+0x248/0x870 init/main.c:1257
do_initcall_level+0x157/0x210 init/main.c:1319
page_owner free stack trace missing
Memory state around the buggy address:
ffff888142b68f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff888142b68f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888142b69000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888142b69080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888142b69100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Warning: Permanently added '10.128.1.147' (ED25519) to the list of known hosts.
2025/01/26 04:24:29 ignoring optional flag "sandboxArg"="0"
2025/01/26 04:24:30 parsed 1 programs
[ 64.871274][ T5830] cgroup: Unknown subsys name 'net'
[ 64.982178][ T5830] cgroup: Unknown subsys name 'cpuset'
[ 64.989964][ T5830] cgroup: Unknown subsys name 'rlimit'
[ 66.294809][ T5830] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 68.850814][ T5850] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[ 68.860084][ T5850] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[ 68.880074][ T5850] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[ 68.892634][ T5850] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[ 68.901301][ T5850] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3
[ 68.908795][ T5850] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[ 69.038398][ 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.
[ 69.281056][ T5843] chnl_net:caif_netlink_parms(): no params data found
[ 69.500579][ T5854] ==================================================================
[ 69.508919][ T5854] BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0
[ 69.516856][ T5854] Write of size 8 at addr ffff888142b69008 by task syz-executor/5854
[ 69.525036][ T5854]
[ 69.527561][ T5854] CPU: 0 UID: 0 PID: 5854 Comm: syz-executor Not tainted 6.13.0-next-20250124-syzkaller-10205-g5ffa57f6eece #0
[ 69.527584][ T5854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 69.527599][ T5854] Call Trace:
[ 69.527606][ T5854]
[ 69.527613][ T5854] dump_stack_lvl+0x241/0x360
[ 69.527643][ T5854] ? __pfx_dump_stack_lvl+0x10/0x10
[ 69.527660][ T5854] ? __pfx__printk+0x10/0x10
[ 69.527681][ T5854] ? _printk+0xd5/0x120
[ 69.527695][ T5854] ? __virt_addr_valid+0x183/0x530
[ 69.527729][ T5854] ? __virt_addr_valid+0x183/0x530
[ 69.527757][ T5854] print_report+0x169/0x550
[ 69.527783][ T5854] ? __virt_addr_valid+0x183/0x530
[ 69.527813][ T5854] ? __virt_addr_valid+0x183/0x530
[ 69.527837][ T5854] ? __virt_addr_valid+0x45f/0x530
[ 69.527857][ T5854] ? __phys_addr+0xba/0x170
[ 69.527878][ T5854] ? binder_add_device+0x5f/0xa0
[ 69.527905][ T5854] kasan_report+0x143/0x180
[ 69.527937][ T5854] ? binder_add_device+0x5f/0xa0
[ 69.527965][ T5854] binder_add_device+0x5f/0xa0
[ 69.527991][ T5854] binderfs_binder_device_create+0x7bf/0x9c0
[ 69.528027][ T5854] binderfs_fill_super+0x944/0xd90
[ 69.528052][ T5854] ? __pfx_binderfs_fill_super+0x10/0x10
[ 69.528079][ T5854] ? shrinker_register+0x160/0x230
[ 69.528104][ T5854] ? sget_fc+0x909/0x9c0
[ 69.528122][ T5854] ? __pfx_set_anon_super_fc+0x10/0x10
[ 69.528143][ T5854] ? __pfx_binderfs_fill_super+0x10/0x10
[ 69.528161][ T5854] get_tree_nodev+0xb7/0x140
[ 69.528192][ T5854] vfs_get_tree+0x90/0x2b0
[ 69.528218][ T5854] do_new_mount+0x2be/0xb40
[ 69.528246][ T5854] ? __pfx_do_new_mount+0x10/0x10
[ 69.528269][ T5854] __se_sys_mount+0x2d6/0x3c0
[ 69.528292][ T5854] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 69.528314][ T5854] ? __pfx___se_sys_mount+0x10/0x10
[ 69.528331][ T5854] ? do_syscall_64+0x100/0x230
[ 69.528355][ T5854] ? __x64_sys_mount+0x20/0xc0
[ 69.528371][ T5854] do_syscall_64+0xf3/0x230
[ 69.528392][ T5854] ? clear_bhb_loop+0x35/0x90
[ 69.528431][ T5854] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 69.528462][ T5854] RIP: 0033:0x7fd7c5b7feba
[ 69.528484][ T5854] 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
[ 69.528502][ T5854] RSP: 002b:00007ffc573ce378 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 69.528537][ T5854] RAX: ffffffffffffffda RBX: 00007fd7c5bf16f1 RCX: 00007fd7c5b7feba
[ 69.528554][ T5854] RDX: 00007fd7c5bfcaf7 RSI: 00007fd7c5bf16f1 RDI: 00007fd7c5bfcaf7
[ 69.528564][ T5854] RBP: 00007fd7c5bf1900 R08: 0000000000000000 R09: 00000000000001ff
[ 69.528581][ T5854] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd7c5bdc068
[ 69.528595][ T5854] R13: 00007fd7c5bdc048 R14: 0000000000000009 R15: 0000000000000000
[ 69.528609][ T5854]
[ 69.528614][ T5854]
[ 69.804204][ T5854] Allocated by task 5846:
[ 69.808520][ T5854] kasan_save_track+0x3f/0x80
[ 69.813289][ T5854] __kasan_kmalloc+0x98/0xb0
[ 69.817867][ T5854] __kmalloc_cache_noprof+0x243/0x390
[ 69.823240][ T5854] binderfs_binder_device_create+0x16c/0x9c0
[ 69.829211][ T5854] binderfs_fill_super+0x944/0xd90
[ 69.834402][ T5854] get_tree_nodev+0xb7/0x140
[ 69.838982][ T5854] vfs_get_tree+0x90/0x2b0
[ 69.843403][ T5854] do_new_mount+0x2be/0xb40
[ 69.848434][ T5854] __se_sys_mount+0x2d6/0x3c0
[ 69.853116][ T5854] do_syscall_64+0xf3/0x230
[ 69.857618][ T5854] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 69.863505][ T5854]
[ 69.865816][ T5854] Freed by task 5846:
[ 69.869779][ T5854] kasan_save_track+0x3f/0x80
[ 69.874680][ T5854] kasan_save_free_info+0x40/0x50
[ 69.879697][ T5854] __kasan_slab_free+0x59/0x70
[ 69.884456][ T5854] kfree+0x196/0x430
[ 69.888422][ T5854] evict+0x4e8/0x9a0
[ 69.892309][ T5854] __dentry_kill+0x20d/0x630
[ 69.896885][ T5854] shrink_kill+0xa9/0x2c0
[ 69.901224][ T5854] shrink_dentry_list+0x2c0/0x5b0
[ 69.906249][ T5854] shrink_dcache_parent+0xcb/0x3b0
[ 69.911351][ T5854] do_one_tree+0x23/0xe0
[ 69.915596][ T5854] shrink_dcache_for_umount+0xb4/0x180
[ 69.921049][ T5854] generic_shutdown_super+0x6a/0x2d0
[ 69.926351][ T5854] kill_litter_super+0x76/0xb0
[ 69.931205][ T5854] binderfs_kill_super+0x44/0x90
[ 69.936235][ T5854] deactivate_locked_super+0xc4/0x130
[ 69.941684][ T5854] cleanup_mnt+0x41f/0x4b0
[ 69.946093][ T5854] task_work_run+0x24f/0x310
[ 69.950695][ T5854] do_exit+0xa2a/0x28e0
[ 69.954954][ T5854] do_group_exit+0x207/0x2c0
[ 69.959566][ T5854] get_signal+0x16b2/0x1750
[ 69.964239][ T5854] arch_do_signal_or_restart+0x96/0x860
[ 69.969872][ T5854] syscall_exit_to_user_mode+0xce/0x340
[ 69.975413][ T5854] do_syscall_64+0x100/0x230
[ 69.980079][ T5854] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 69.986581][ T5854]
[ 69.988893][ T5854] The buggy address belongs to the object at ffff888142b69000
[ 69.988893][ T5854] which belongs to the cache kmalloc-512 of size 512
[ 70.003031][ T5854] The buggy address is located 8 bytes inside of
[ 70.003031][ T5854] freed 512-byte region [ffff888142b69000, ffff888142b69200)
[ 70.016811][ T5854]
[ 70.019125][ T5854] The buggy address belongs to the physical page:
[ 70.025519][ T5854] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x142b68
[ 70.034362][ T5854] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 70.042848][ T5854] flags: 0x57ff00000000040(head|node=1|zone=2|lastcpupid=0x7ff)
[ 70.050560][ T5854] page_type: f5(slab)
[ 70.054527][ T5854] raw: 057ff00000000040 ffff88801ac41c80 ffffea0005367e00 dead000000000002
[ 70.063095][ T5854] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 70.071749][ T5854] head: 057ff00000000040 ffff88801ac41c80 ffffea0005367e00 dead000000000002
[ 70.080588][ T5854] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 70.089351][ T5854] head: 057ff00000000002 ffffea00050ada01 ffffffffffffffff 0000000000000000
[ 70.098214][ T5854] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[ 70.107051][ T5854] page dumped because: kasan: bad access detected
[ 70.113546][ T5854] page_owner tracks the page as allocated
[ 70.119245][ T5854] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 7101922972, free_ts 0
[ 70.138858][ T5854] post_alloc_hook+0x1f4/0x240
[ 70.143725][ T5854] get_page_from_freelist+0x365c/0x37a0
[ 70.149266][ T5854] __alloc_frozen_pages_noprof+0x292/0x710
[ 70.155244][ T5854] alloc_pages_mpol+0x311/0x660
[ 70.160100][ T5854] allocate_slab+0x8f/0x3a0
[ 70.164683][ T5854] ___slab_alloc+0xc27/0x14a0
[ 70.169352][ T5854] __slab_alloc+0x58/0xa0
[ 70.173669][ T5854] __kmalloc_cache_node_noprof+0x294/0x3a0
[ 70.179565][ T5854] blkg_alloc+0xd6/0x810
[ 70.183822][ T5854] blkcg_init_disk+0x55/0x120
[ 70.188518][ T5854] __alloc_disk_node+0x2d2/0x580
[ 70.193626][ T5854] __blk_mq_alloc_disk+0x218/0x370
[ 70.198738][ T5854] loop_add+0x441/0xaf0
[ 70.203168][ T5854] loop_init+0x168/0x220
[ 70.207423][ T5854] do_one_initcall+0x248/0x870
[ 70.212304][ T5854] do_initcall_level+0x157/0x210
[ 70.217244][ T5854] page_owner free stack trace missing
[ 70.222616][ T5854]
[ 70.225019][ T5854] Memory state around the buggy address:
[ 70.230639][ T5854] ffff888142b68f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 70.238714][ T5854] ffff888142b68f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 70.246877][ T5854] >ffff888142b69000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 70.254990][ T5854] ^
[ 70.259415][ T5854] ffff888142b69080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 70.267550][ T5854] ffff888142b69100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 70.275598][ T5854] ==================================================================
[ 70.293523][ T5854] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 70.300842][ T5854] CPU: 0 UID: 0 PID: 5854 Comm: syz-executor Not tainted 6.13.0-next-20250124-syzkaller-10205-g5ffa57f6eece #0
[ 70.312743][ T5854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 70.322904][ T5854] Call Trace:
[ 70.326251][ T5854]
[ 70.329208][ T5854] dump_stack_lvl+0x241/0x360
[ 70.333915][ T5854] ? __pfx_dump_stack_lvl+0x10/0x10
[ 70.339147][ T5854] ? __pfx__printk+0x10/0x10
[ 70.343767][ T5854] ? preempt_schedule+0xe1/0xf0
[ 70.348651][ T5854] ? vscnprintf+0x5d/0x90
[ 70.353008][ T5854] panic+0x349/0x880
[ 70.356925][ T5854] ? check_panic_on_warn+0x21/0xb0
[ 70.362075][ T5854] ? __pfx_panic+0x10/0x10
[ 70.366533][ T5854] ? _raw_spin_unlock_irqrestore+0x130/0x140
[ 70.372656][ T5854] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[ 70.379007][ T5854] ? print_report+0x502/0x550
[ 70.383719][ T5854] check_panic_on_warn+0x86/0xb0
[ 70.388781][ T5854] ? binder_add_device+0x5f/0xa0
[ 70.393763][ T5854] end_report+0x77/0x160
[ 70.398004][ T5854] kasan_report+0x154/0x180
[ 70.402514][ T5854] ? binder_add_device+0x5f/0xa0
[ 70.407533][ T5854] binder_add_device+0x5f/0xa0
[ 70.412324][ T5854] binderfs_binder_device_create+0x7bf/0x9c0
[ 70.418330][ T5854] binderfs_fill_super+0x944/0xd90
[ 70.423472][ T5854] ? __pfx_binderfs_fill_super+0x10/0x10
[ 70.429147][ T5854] ? shrinker_register+0x160/0x230
[ 70.434285][ T5854] ? sget_fc+0x909/0x9c0
[ 70.439075][ T5854] ? __pfx_set_anon_super_fc+0x10/0x10
[ 70.445016][ T5854] ? __pfx_binderfs_fill_super+0x10/0x10
[ 70.450678][ T5854] get_tree_nodev+0xb7/0x140
[ 70.455358][ T5854] vfs_get_tree+0x90/0x2b0
[ 70.459811][ T5854] do_new_mount+0x2be/0xb40
[ 70.464320][ T5854] ? __pfx_do_new_mount+0x10/0x10
[ 70.469427][ T5854] __se_sys_mount+0x2d6/0x3c0
[ 70.474097][ T5854] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 70.480065][ T5854] ? __pfx___se_sys_mount+0x10/0x10
[ 70.485262][ T5854] ? do_syscall_64+0x100/0x230
[ 70.490115][ T5854] ? __x64_sys_mount+0x20/0xc0
[ 70.494872][ T5854] do_syscall_64+0xf3/0x230
[ 70.499388][ T5854] ? clear_bhb_loop+0x35/0x90
[ 70.504180][ T5854] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 70.510079][ T5854] RIP: 0033:0x7fd7c5b7feba
[ 70.514485][ T5854] 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
[ 70.534177][ T5854] RSP: 002b:00007ffc573ce378 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 70.542652][ T5854] RAX: ffffffffffffffda RBX: 00007fd7c5bf16f1 RCX: 00007fd7c5b7feba
[ 70.550623][ T5854] RDX: 00007fd7c5bfcaf7 RSI: 00007fd7c5bf16f1 RDI: 00007fd7c5bfcaf7
[ 70.558605][ T5854] RBP: 00007fd7c5bf1900 R08: 0000000000000000 R09: 00000000000001ff
[ 70.566677][ T5854] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd7c5bdc068
[ 70.574649][ T5854] R13: 00007fd7c5bdc048 R14: 0000000000000009 R15: 0000000000000000
[ 70.582714][ T5854]
[ 70.586026][ T5854] Kernel Offset: disabled
[ 70.590346][ T5854] 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-build602775788=/tmp/go-build -gno-record-gcc-switches'
git status (err=)
HEAD detached at f00eed24f2
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=f00eed24f2a1332b07fef1a353a439133978d97b -X 'github.com/google/syzkaller/prog.gitRevisionDate=20241101-132521'" "-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=\"f00eed24f2a1332b07fef1a353a439133978d97b\"
/usr/bin/ld: /tmp/ccuKmUJw.o: in function `test_cover_filter()':
executor.cc:(.text+0x1426b): warning: the use of `tempnam' is dangerous, better use `mkstemp'
/usr/bin/ld: /tmp/ccuKmUJw.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