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 ffff888030786c08 by task syz-executor/5880
CPU: 0 UID: 0 PID: 5880 Comm: syz-executor Not tainted 6.13.0-rc7-next-20250117-syzkaller-g0907e7fb3575 #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: 0033:0x7ff0aa3874ca
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:00007fff641177c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ff0aa401ecb RCX: 00007ff0aa3874ca
RDX: 00007ff0aa40ec27 RSI: 00007ff0aa401ecb RDI: 00007ff0aa40ec27
RBP: 00007ff0aa4020c3 R08: 0000000000000000 R09: 00000000000001ff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff0aa3e41c8
R13: 00007ff0aa3e41a8 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:625
shrink_kill+0xa9/0x2c0 fs/dcache.c:1070
shrink_dentry_list+0x2c0/0x5b0 fs/dcache.c:1097
shrink_dcache_parent+0xcb/0x3b0
do_one_tree+0x23/0xe0 fs/dcache.c:1560
shrink_dcache_for_umount+0xb4/0x180 fs/dcache.c:1577
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 ffff888030786c00
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
freed 512-byte region [ffff888030786c00, ffff888030786e00)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x30784
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 0000000000000001
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801ac41c80 0000000000000000 0000000000000001
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000002 ffffea0000c1e101 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 5209, tgid 5209 (udevd), ts 31423503444, free_ts 31275647370
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:3828 [inline]
path_openat+0x2c74/0x3580 fs/namei.c:3987
do_filp_open+0x27f/0x4e0 fs/namei.c:4014
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 25 tgid 25 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
run_ksoftirqd+0xca/0x130 kernel/softirq.c:950
smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Memory state around the buggy address:
ffff888030786b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff888030786b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888030786c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888030786c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888030786d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Warning: Permanently added '10.128.1.109' (ED25519) to the list of known hosts.
2025/01/17 22:00:43 ignoring optional flag "sandboxArg"="0"
2025/01/17 22:00:43 parsed 1 programs
[ 64.958592][ T5833] cgroup: Unknown subsys name 'net'
[ 65.107107][ T5833] cgroup: Unknown subsys name 'cpuset'
[ 65.114833][ T5833] cgroup: Unknown subsys name 'rlimit'
[ 66.453431][ T5833] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 68.840418][ T5852] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[ 68.849617][ T5852] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[ 68.858576][ T5852] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[ 68.867366][ T5852] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[ 68.885108][ T5852] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3
[ 68.892512][ T5852] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[ 69.138075][ T5847] 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.
[ 69.268563][ T11] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 69.268697][ T11] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[ 69.518229][ T1425] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 69.518293][ T1425] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
[ 70.146541][ T5880] ==================================================================
[ 70.146578][ T5880] BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0
[ 70.146626][ T5880] Write of size 8 at addr ffff888030786c08 by task syz-executor/5880
[ 70.146650][ T5880]
[ 70.146682][ T5880] CPU: 0 UID: 0 PID: 5880 Comm: syz-executor Not tainted 6.13.0-rc7-next-20250117-syzkaller-g0907e7fb3575 #0
[ 70.146701][ T5880] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 70.146715][ T5880] Call Trace:
[ 70.146722][ T5880]
[ 70.146729][ T5880] dump_stack_lvl+0x241/0x360
[ 70.146747][ T5880] ? __pfx_dump_stack_lvl+0x10/0x10
[ 70.146761][ T5880] ? __pfx__printk+0x10/0x10
[ 70.146779][ T5880] ? _printk+0xd5/0x120
[ 70.146795][ T5880] ? __virt_addr_valid+0x18
** replaying previous printk message **
[ 70.146795][ T5880] ? __virt_addr_valid+0x183/0x530
[ 70.146813][ T5880] ? __virt_addr_valid+0x183/0x530
[ 70.146829][ T5880] print_report+0x169/0x550
[ 70.146847][ T5880] ? __virt_addr_valid+0x183/0x530
[ 70.146863][ T5880] ? __virt_addr_valid+0x183/0x530
[ 70.146878][ T5880] ? __virt_addr_valid+0x45f/0x530
[ 70.146894][ T5880] ? __phys_addr+0xba/0x170
[ 70.146910][ T5880] ? binder_add_device+0x5f/0xa0
[ 70.146922][ T5880] kasan_report+0x143/0x180
[ 70.146940][ T5880] ? binder_add_device+0x5f/0xa0
[ 70.146954][ T5880] binder_add_device+0x5f/0xa0
[ 70.146967][ T5880] binderfs_binder_device_create+0x7bf/0x9c0
[ 70.146982][ T5880] binderfs_fill_super+0x944/0xd90
[ 70.146996][ T5880] ? __pfx_binderfs_fill_super+0x10/0x10
[ 70.147015][ T5880] ? shrinker_register+0x160/0x230
[ 70.147030][ T5880] ? sget_fc+0x909/0x9c0
[ 70.147045][ T5880] ? __pfx_set_anon_super_fc+0x10/0x10
[ 70.147059][ T5880] ? __pfx_binderfs_fill_super+0x10/0x10
[ 70.147072][ T5880] get_tree_nodev+0xb7/0x140
[ 70.147086][ T5880] vfs_get_tree+0x90/0x2b0
[ 70.147102][ T5880] do_new_mount+0x2be/0xb40
[ 70.147122][ T5880] ? __pfx_do_new_mount+0x10/0x10
[ 70.147141][ T5880] __se_sys_mount+0x2d6/0x3c0
[ 70.147153][ T5880] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 70.147170][ T5880] ? __pfx___se_sys_mount+0x10/0x10
[ 70.147182][ T5880] ? do_syscall_64+0x100/0x230
[ 70.147198][ T5880] ? __x64_sys_mount+0x20/0xc0
[ 70.147210][ T5880] do_syscall_64+0xf3/0x230
[ 70.147223][ T5880] ? clear_bhb_loop+0x35/0x90
[ 70.147241][ T5880] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 70.147260][ T5880] RIP: 0033:0x7ff0aa3874ca
[ 70.147275][ T5880] 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
[ 70.147286][ T5880] RSP: 002b:00007fff641177c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 70.147301][ T5880] RAX: ffffffffffffffda RBX: 00007ff0aa401ecb RCX: 00007ff0aa3874ca
[ 70.147310][ T5880] RDX: 00007ff0aa40ec27 RSI: 00007ff0aa401ecb RDI: 00007ff0aa40ec27
[ 70.147319][ T5880] RBP: 00007ff0aa4020c3 R08: 0000000000000000 R09: 00000000000001ff
[ 70.147328][ T5880] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff0aa3e41c8
[ 70.147336][ T5880] R13: 00007ff0aa3e41a8 R14: 0000000000000009 R15: 0000000000000000
[ 70.147348][ T5880]
[ 70.147353][ T5880]
[ 70.147602][ T5880] Allocated by task 5846:
[ 70.147615][ T5880] kasan_save_track+0x3f/0x80
[ 70.147637][ T5880] __kasan_kmalloc+0x98/0xb0
[ 70.147658][ T5880] __kmalloc_cache_noprof+0x243/0x390
[ 70.147678][ T5880] binderfs_binder_device_create+0x16c/0x9c0
[ 70.147696][ T5880] binderfs_fill_super+0x944/0xd90
[ 70.147714][ T5880] get_tree_nodev+0xb7/0x140
[ 70.147734][ T5880] vfs_get_tree+0x90/0x2b0
[ 70.147755][ T5880] do_new_mount+0x2be/0xb40
[ 70.147778][ T5880] __se_sys_mount+0x2d6/0x3c0
[ 70.147795][ T5880] do_syscall_64+0xf3/0x230
[ 70.147814][ T5880] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 70.147835][ T5880]
[ 70.147846][ T5880] Freed by task 5846:
[ 70.147858][ T5880] kasan_save_track+0x3f/0x80
[ 70.147879][ T5880] kasan_save_free_info+0x40/0x50
[ 70.147899][ T5880] __kasan_slab_free+0x59/0x70
[ 70.147920][ T5880] kfree+0x196/0x430
[ 70.147936][ T5880] evict+0x4e8/0x9a0
[ 70.147956][ T5880] __dentry_kill+0x20d/0x630
[ 70.147975][ T5880] shrink_kill+0xa9/0x2c0
[ 70.147993][ T5880] shrink_dentry_list+0x2c0/0x5b0
[ 70.148011][ T5880] shrink_dcache_parent+0xcb/0x3b0
[ 70.148030][ T5880] do_one_tree+0x23/0xe0
[ 70.148049][ T5880] shrink_dcache_for_umount+0xb4/0x180
[ 70.148068][ T5880] generic_shutdown_super+0x6a/0x2d0
[ 70.148088][ T5880] kill_litter_super+0x76/0xb0
[ 70.148108][ T5880] binderfs_kill_super+0x44/0x90
[ 70.148125][ T5880] deactivate_locked_super+0xc4/0x130
[ 70.148145][ T5880] cleanup_mnt+0x41f/0x4b0
[ 70.148164][ T5880] task_work_run+0x24f/0x310
[ 70.148187][ T5880] do_exit+0xa2a/0x28e0
[ 70.148208][ T5880] do_group_exit+0x207/0x2c0
[ 70.148229][ T5880] get_signal+0x16b2/0x1750
[ 70.148247][ T5880] arch_do_signal_or_restart+0x96/0x860
[ 70.148267][ T5880] syscall_exit_to_user_mode+0xce/0x340
[ 70.148288][ T5880] do_syscall_64+0x100/0x230
[ 70.148308][ T5880] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 70.148329][ T5880]
[ 70.148339][ T5880] The buggy address belongs to the object at ffff888030786c00
[ 70.148339][ T5880] which belongs to the cache kmalloc-512 of size 512
[ 70.148357][ T5880] The buggy address is located 8 bytes inside of
[ 70.148357][ T5880] freed 512-byte region [ffff888030786c00, ffff888030786e00)
[ 70.148377][ T5880]
[ 70.148388][ T5880] The buggy address belongs to the physical page:
[ 70.148400][ T5880] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x30784
[ 70.148428][ T5880] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 70.148446][ T5880] anon flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
[ 70.148468][ T5880] page_type: f5(slab)
[ 70.148486][ T5880] raw: 00fff00000000040 ffff88801ac41c80 0000000000000000 0000000000000001
[ 70.148504][ T5880] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 70.148526][ T5880] head: 00fff00000000040 ffff88801ac41c80 0000000000000000 0000000000000001
[ 70.148543][ T5880] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 70.148561][ T5880] head: 00fff00000000002 ffffea0000c1e101 ffffffffffffffff 0000000000000000
[ 70.148578][ T5880] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[ 70.148592][ T5880] page dumped because: kasan: bad access detected
[ 70.148609][ T5880] page_owner tracks the page as allocated
[ 70.148621][ T5880] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5209, tgid 5209 (udevd), ts 31423503444, free_ts 31275647370
[ 70.148653][ T5880] post_alloc_hook+0x1f4/0x240
[ 70.148673][ T5880] get_page_from_freelist+0x365c/0x37a0
[ 70.148696][ T5880] __alloc_frozen_pages_noprof+0x292/0x710
[ 70.148717][ T5880] alloc_pages_mpol+0x311/0x660
[ 70.148742][ T5880] allocate_slab+0x8f/0x3a0
[ 70.148762][ T5880] ___slab_alloc+0xc27/0x14a0
[ 70.148782][ T5880] __slab_alloc+0x58/0xa0
[ 70.148801][ T5880] __kmalloc_cache_noprof+0x27b/0x390
[ 70.148819][ T5880] kernfs_fop_open+0x3e0/0xd10
[ 70.148838][ T5880] do_dentry_open+0xdec/0x1960
[ 70.148856][ T5880] vfs_open+0x3b/0x370
[ 70.148872][ T5880] path_openat+0x2c74/0x3580
[ 70.148893][ T5880] do_filp_open+0x27f/0x4e0
[ 70.148912][ T5880] do_sys_openat2+0x13e/0x1d0
[ 70.148930][ T5880] __x64_sys_openat+0x247/0x2a0
[ 70.148948][ T5880] do_syscall_64+0xf3/0x230
[ 70.148967][ T5880] page last free pid 25 tgid 25 stack trace:
[ 70.148981][ T5880] free_frozen_pages+0xe0d/0x10e0
[ 70.149001][ T5880] rcu_core+0xaaa/0x17a0
[ 70.149023][ T5880] handle_softirqs+0x2d4/0x9b0
[ 70.149041][ T5880] run_ksoftirqd+0xca/0x130
[ 70.149060][ T5880] smpboot_thread_fn+0x544/0xa30
[ 70.149080][ T5880] kthread+0x7a9/0x920
[ 70.149101][ T5880] ret_from_fork+0x4b/0x80
[ 70.149121][ T5880] ret_from_fork_asm+0x1a/0x30
[ 70.149141][ T5880]
[ 70.149151][ T5880] Memory state around the buggy address:
[ 70.149165][ T5880] ffff888030786b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 70.149181][ T5880] ffff888030786b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 70.149196][ T5880] >ffff888030786c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 70.149209][ T5880] ^
[ 70.149239][ T5880] ffff888030786c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 70.149255][ T5880] ffff888030786d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 70.149269][ T5880] ==================================================================
[ 70.227889][ T5880] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 70.977323][ T5880] CPU: 1 UID: 0 PID: 5880 Comm: syz-executor Not tainted 6.13.0-rc7-next-20250117-syzkaller-g0907e7fb3575 #0
[ 70.988868][ T5880] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 70.998912][ T5880] Call Trace:
[ 71.002188][ T5880]
[ 71.005119][ T5880] dump_stack_lvl+0x241/0x360
[ 71.009824][ T5880] ? __pfx_dump_stack_lvl+0x10/0x10
[ 71.015044][ T5880] ? __pfx__printk+0x10/0x10
[ 71.019664][ T5880] ? preempt_schedule+0xe1/0xf0
[ 71.024542][ T5880] ? vscnprintf+0x5d/0x90
[ 71.028902][ T5880] panic+0x349/0x880
[ 71.032811][ T5880] ? check_panic_on_warn+0x21/0xb0
[ 71.037924][ T5880] ? __pfx_panic+0x10/0x10
[ 71.042340][ T5880] ? _raw_spin_unlock_irqrestore+0x130/0x140
[ 71.048330][ T5880] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[ 71.054657][ T5880] ? print_report+0x502/0x550
[ 71.059336][ T5880] check_panic_on_warn+0x86/0xb0
[ 71.064272][ T5880] ? binder_add_device+0x5f/0xa0
[ 71.069204][ T5880] end_report+0x77/0x160
[ 71.073446][ T5880] kasan_report+0x154/0x180
[ 71.078034][ T5880] ? binder_add_device+0x5f/0xa0
[ 71.082970][ T5880] binder_add_device+0x5f/0xa0
[ 71.087729][ T5880] binderfs_binder_device_create+0x7bf/0x9c0
[ 71.093732][ T5880] binderfs_fill_super+0x944/0xd90
[ 71.098898][ T5880] ? __pfx_binderfs_fill_super+0x10/0x10
[ 71.104567][ T5880] ? shrinker_register+0x160/0x230
[ 71.109683][ T5880] ? sget_fc+0x909/0x9c0
[ 71.113924][ T5880] ? __pfx_set_anon_super_fc+0x10/0x10
[ 71.119376][ T5880] ? __pfx_binderfs_fill_super+0x10/0x10
[ 71.125015][ T5880] get_tree_nodev+0xb7/0x140
[ 71.129634][ T5880] vfs_get_tree+0x90/0x2b0
[ 71.134062][ T5880] do_new_mount+0x2be/0xb40
[ 71.138577][ T5880] ? __pfx_do_new_mount+0x10/0x10
[ 71.143607][ T5880] __se_sys_mount+0x2d6/0x3c0
[ 71.148283][ T5880] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 71.154352][ T5880] ? __pfx___se_sys_mount+0x10/0x10
[ 71.159631][ T5880] ? do_syscall_64+0x100/0x230
[ 71.164396][ T5880] ? __x64_sys_mount+0x20/0xc0
[ 71.169165][ T5880] do_syscall_64+0xf3/0x230
[ 71.173661][ T5880] ? clear_bhb_loop+0x35/0x90
[ 71.178361][ T5880] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 71.184294][ T5880] RIP: 0033:0x7ff0aa3874ca
[ 71.188734][ T5880] 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
[ 71.208364][ T5880] RSP: 002b:00007fff641177c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 71.216813][ T5880] RAX: ffffffffffffffda RBX: 00007ff0aa401ecb RCX: 00007ff0aa3874ca
[ 71.224819][ T5880] RDX: 00007ff0aa40ec27 RSI: 00007ff0aa401ecb RDI: 00007ff0aa40ec27
[ 71.232810][ T5880] RBP: 00007ff0aa4020c3 R08: 0000000000000000 R09: 00000000000001ff
[ 71.240777][ T5880] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff0aa3e41c8
[ 71.248739][ T5880] R13: 00007ff0aa3e41a8 R14: 0000000000000009 R15: 0000000000000000
[ 71.256710][ T5880]
[ 72.379009][ T5880] Shutting down cpus with NMI
[ 72.384161][ T5880] Kernel Offset: disabled
[ 72.388492][ T5880] 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-build248051753=/tmp/go-build -gno-record-gcc-switches'
git status (err=)
HEAD detached at d3ccff637
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=d3ccff6372e07c6aabd02b5da419aa6492b5f0ad -X 'github.com/google/syzkaller/prog.gitRevisionDate=20241226-091248'" "-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=\"d3ccff6372e07c6aabd02b5da419aa6492b5f0ad\"
/usr/bin/ld: /tmp/cckJUw43.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