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 ffff888027b19008 by task syz-executor/5727
CPU: 0 UID: 0 PID: 5727 Comm: syz-executor Not tainted 6.14.0-rc2-syzkaller #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+0x90/0x290 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+0x82/0x160 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f8fda1874ca
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:00007ffd66a11a28 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f8fda201ecb RCX: 00007f8fda1874ca
RDX: 00007f8fda20ec27 RSI: 00007f8fda201ecb RDI: 00007f8fda20ec27
RBP: 00007f8fda2020c3 R08: 0000000000000000 R09: 00000000000001ff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8fda1e41c8
R13: 00007f8fda1e41a8 R14: 0000000000000009 R15: 0000000000000000
Allocated by task 5718:
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+0x7d/0x90 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__kmalloc_cache_noprof+0x23e/0x360 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+0x90/0x290 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+0x82/0x160 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Freed by task 5718:
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+0x36/0x50 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+0x181/0x430 mm/slub.c:4757
evict+0x4e8/0x9a0 fs/inode.c:796
__dentry_kill+0x200/0x610 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+0xc4/0x120 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/0x28d0 kernel/exit.c:938
do_group_exit+0x207/0x2c0 kernel/exit.c:1087
get_signal+0x16a6/0x1740 kernel/signal.c:3036
arch_do_signal_or_restart+0x96/0x830 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+0xcd/0x330 kernel/entry/common.c:218
do_syscall_64+0x8e/0x160 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x76/0x7e
The buggy address belongs to the object at ffff888027b19000
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
freed 512-byte region [ffff888027b19000, ffff888027b19200)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x27b18
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 ffff88801a041c80 ffffea0000cbf000 dead000000000002
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801a041c80 ffffea0000cbf000 dead000000000002
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000002 ffffea00009ec601 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 5091, tgid 5091 (udevadm), ts 35958933758, free_ts 35521400249
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1ec/0x220 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x3607/0x3750 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x256/0x690 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+0xc35/0x14a0 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+0x276/0x360 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+0xdea/0x1960 fs/open.c:956
vfs_open+0x3b/0x370 fs/open.c:1086
do_open fs/namei.c:3830 [inline]
path_openat+0x2c7d/0x3590 fs/namei.c:3989
do_filp_open+0x27f/0x4e0 fs/namei.c:4016
do_sys_openat2+0x13e/0x1d0 fs/open.c:1428
do_sys_open fs/open.c:1443 [inline]
__do_sys_openat fs/open.c:1459 [inline]
__se_sys_openat fs/open.c:1454 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1454
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x82/0x160 arch/x86/entry/common.c:83
page last free pid 5091 tgid 5091 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_frozen_pages+0xdf5/0x10b0 mm/page_alloc.c:2660
rcu_do_batch kernel/rcu/tree.c:2546 [inline]
rcu_core+0xaaa/0x1790 kernel/rcu/tree.c:2802
handle_softirqs+0x2d4/0x9a0 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+0xa4/0xc0 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:
ffff888027b18f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff888027b18f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888027b19000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888027b19080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888027b19100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Warning: Permanently added '10.128.0.154' (ED25519) to the list of known hosts.
2025/02/14 17:57:12 ignoring optional flag "sandboxArg"="0"
2025/02/14 17:57:12 parsed 1 programs
[ 79.910019][ T5700] cgroup: Unknown subsys name 'net'
[ 80.048770][ T5700] cgroup: Unknown subsys name 'cpuset'
[ 80.059050][ T5700] cgroup: Unknown subsys name 'rlimit'
[ 80.065572][ T5700] cgroup: Unknown subsys name 'memory'
[ 81.615633][ T5700] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 84.877800][ T5730] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[ 84.895524][ T5730] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[ 84.904047][ T5730] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[ 84.919862][ T5730] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[ 84.929957][ T5730] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3
[ 84.937925][ T5730] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[ 85.138317][ T5713] chnl_net:caif_netlink_parms(): no params data found
[ 85.418217][ T2871] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 85.461440][ T2871] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[ 85.470639][ T5727] ==================================================================
[ 85.478938][ T5727] BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0
[ 85.486805][ T5727] Write of size 8 at addr ffff888027b19008 by task syz-executor/5727
[ 85.495177][ T5727]
[ 85.497544][ T5727] CPU: 0 UID: 0 PID: 5727 Comm: syz-executor Not tainted 6.14.0-rc2-syzkaller #0
[ 85.497568][ T5727] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 85.497586][ T5727] Call Trace:
[ 85.497594][ T5727]
[ 85.497603][ T5727] dump_stack_lvl+0x241/0x360
[ 85.497632][ T5727] ? __pfx_dump_stack_lvl+0x10/0x10
[ 85.497655][ T5727] ? __pfx__printk+0x10/0x10
[ 85.497677][ T5727] ? _printk+0xd5/0x120
[ 85.497697][ T5727] ? __virt_addr_valid+0x183/0x530
[ 85.497723][ T5727] ? __virt_addr_valid+0x183/0x530
[ 85.497748][ T5727] print_report+0x169/0x550
[ 85.497777][ T5727] ? __virt_addr_valid+0x183/0x530
[ 85.497801][ T5727] ? __virt_addr_valid+0x183/0x530
[ 85.497824][ T5727] ? __virt_addr_valid+0x45f/0x530
[ 85.497848][ T5727] ? __phys_addr+0xba/0x170
[ 85.497872][ T5727] ? binder_add_device+0x5f/0xa0
[ 85.497893][ T5727] kasan_report+0x143/0x180
[ 85.497922][ T5727] ? binder_add_device+0x5f/0xa0
[ 85.497946][ T5727] binder_add_device+0x5f/0xa0
[ 85.497966][ T5727] binderfs_binder_device_create+0x7bf/0x9c0
[ 85.498005][ T5727] binderfs_fill_super+0x944/0xd90
[ 85.498041][ T5727] ? __pfx_binderfs_fill_super+0x10/0x10
[ 85.498085][ T5727] ? shrinker_register+0x160/0x230
[ 85.498111][ T5727] ? sget_fc+0x909/0x9c0
[ 85.498142][ T5727] ? __pfx_set_anon_super_fc+0x10/0x10
[ 85.498236][ T5727] ? __pfx_binderfs_fill_super+0x10/0x10
[ 85.498283][ T5727] get_tree_nodev+0xb7/0x140
[ 85.498306][ T5727] vfs_get_tree+0x90/0x290
[ 85.498330][ T5727] do_new_mount+0x2be/0xb40
[ 85.498357][ T5727] ? __pfx_do_new_mount+0x10/0x10
[ 85.498386][ T5727] __se_sys_mount+0x2d6/0x3c0
[ 85.498415][ T5727] ? lockdep_hardirqs_on_prepare+0x43d/0x7a0
[ 85.498445][ T5727] ? __pfx___se_sys_mount+0x10/0x10
[ 85.498473][ T5727] ? __x64_sys_mount+0x20/0xc0
[ 85.498500][ T5727] do_syscall_64+0x82/0x160
[ 85.498523][ T5727] ? clear_bhb_loop+0x25/0x80
[ 85.498554][ T5727] ? clear_bhb_loop+0x25/0x80
[ 85.498585][ T5727] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 85.498624][ T5727] RIP: 0033:0x7f8fda1874ca
[ 85.498650][ T5727] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
[ 85.498668][ T5727] RSP: 002b:00007ffd66a11a28 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 85.498692][ T5727] RAX: ffffffffffffffda RBX: 00007f8fda201ecb RCX: 00007f8fda1874ca
[ 85.498708][ T5727] RDX: 00007f8fda20ec27 RSI: 00007f8fda201ecb RDI: 00007f8fda20ec27
[ 85.498723][ T5727] RBP: 00007f8fda2020c3 R08: 0000000000000000 R09: 00000000000001ff
[ 85.498737][ T5727] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8fda1e41c8
[ 85.498751][ T5727] R13: 00007f8fda1e41a8 R14: 0000000000000009 R15: 0000000000000000
[ 85.498773][ T5727]
[ 85.498781][ T5727]
[ 85.777792][ T5727] Allocated by task 5718:
[ 85.782127][ T5727] kasan_save_track+0x3f/0x80
[ 85.786856][ T5727] __kasan_kmalloc+0x7d/0x90
[ 85.791483][ T5727] __kmalloc_cache_noprof+0x23e/0x360
[ 85.796904][ T5727] binderfs_binder_device_create+0x16c/0x9c0
[ 85.803011][ T5727] binderfs_fill_super+0x944/0xd90
[ 85.808321][ T5727] get_tree_nodev+0xb7/0x140
[ 85.812946][ T5727] vfs_get_tree+0x90/0x290
[ 85.817577][ T5727] do_new_mount+0x2be/0xb40
[ 85.822103][ T5727] __se_sys_mount+0x2d6/0x3c0
[ 85.826891][ T5727] do_syscall_64+0x82/0x160
[ 85.831587][ T5727] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 85.838132][ T5727]
[ 85.840655][ T5727] Freed by task 5718:
[ 85.844657][ T5727] kasan_save_track+0x3f/0x80
[ 85.849376][ T5727] kasan_save_free_info+0x40/0x50
[ 85.854465][ T5727] __kasan_slab_free+0x36/0x50
[ 85.859362][ T5727] kfree+0x181/0x430
[ 85.863364][ T5727] evict+0x4e8/0x9a0
[ 85.867316][ T5727] __dentry_kill+0x200/0x610
[ 85.871937][ T5727] shrink_kill+0xa9/0x2c0
[ 85.876431][ T5727] shrink_dentry_list+0x2c0/0x5b0
[ 85.881476][ T5727] shrink_dcache_parent+0xcb/0x3b0
[ 85.886619][ T5727] do_one_tree+0x23/0xe0
[ 85.891062][ T5727] shrink_dcache_for_umount+0xb4/0x180
[ 85.896654][ T5727] generic_shutdown_super+0x6a/0x2d0
[ 85.901993][ T5727] kill_litter_super+0x76/0xb0
[ 85.907155][ T5727] binderfs_kill_super+0x44/0x90
[ 85.912217][ T5727] deactivate_locked_super+0xc4/0x120
[ 85.917708][ T5727] cleanup_mnt+0x41f/0x4b0
[ 85.922143][ T5727] task_work_run+0x24f/0x310
[ 85.926760][ T5727] do_exit+0xa2a/0x28d0
[ 85.931033][ T5727] do_group_exit+0x207/0x2c0
[ 85.935642][ T5727] get_signal+0x16a6/0x1740
[ 85.940170][ T5727] arch_do_signal_or_restart+0x96/0x830
[ 85.945813][ T5727] syscall_exit_to_user_mode+0xcd/0x330
[ 85.951397][ T5727] do_syscall_64+0x8e/0x160
[ 85.955951][ T5727] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 85.962562][ T5727]
[ 85.964898][ T5727] The buggy address belongs to the object at ffff888027b19000
[ 85.964898][ T5727] which belongs to the cache kmalloc-512 of size 512
[ 85.979067][ T5727] The buggy address is located 8 bytes inside of
[ 85.979067][ T5727] freed 512-byte region [ffff888027b19000, ffff888027b19200)
[ 85.993407][ T5727]
[ 85.995757][ T5727] The buggy address belongs to the physical page:
[ 86.002170][ T5727] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x27b18
[ 86.011071][ T5727] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 86.019612][ T5727] flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
[ 86.027291][ T5727] page_type: f5(slab)
[ 86.031502][ T5727] raw: 00fff00000000040 ffff88801a041c80 ffffea0000cbf000 dead000000000002
[ 86.040478][ T5727] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 86.049186][ T5727] head: 00fff00000000040 ffff88801a041c80 ffffea0000cbf000 dead000000000002
[ 86.058580][ T5727] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 86.067541][ T5727] head: 00fff00000000002 ffffea00009ec601 ffffffffffffffff 0000000000000000
[ 86.076598][ T5727] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[ 86.085416][ T5727] page dumped because: kasan: bad access detected
[ 86.092125][ T5727] page_owner tracks the page as allocated
[ 86.097871][ T5727] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5091, tgid 5091 (udevadm), ts 35958933758, free_ts 35521400249
[ 86.119034][ T5727] post_alloc_hook+0x1ec/0x220
[ 86.124004][ T5727] get_page_from_freelist+0x3607/0x3750
[ 86.129747][ T5727] __alloc_frozen_pages_noprof+0x256/0x690
[ 86.135792][ T5727] alloc_pages_mpol+0x311/0x660
[ 86.140860][ T5727] allocate_slab+0x8f/0x3a0
[ 86.145646][ T5727] ___slab_alloc+0xc35/0x14a0
[ 86.150350][ T5727] __slab_alloc+0x58/0xa0
[ 86.154811][ T5727] __kmalloc_cache_noprof+0x276/0x360
[ 86.160300][ T5727] kernfs_fop_open+0x3e0/0xd10
[ 86.165110][ T5727] do_dentry_open+0xdea/0x1960
[ 86.169911][ T5727] vfs_open+0x3b/0x370
[ 86.174121][ T5727] path_openat+0x2c7d/0x3590
[ 86.178809][ T5727] do_filp_open+0x27f/0x4e0
[ 86.183504][ T5727] do_sys_openat2+0x13e/0x1d0
[ 86.188281][ T5727] __x64_sys_openat+0x247/0x2a0
[ 86.193143][ T5727] do_syscall_64+0x82/0x160
[ 86.197807][ T5727] page last free pid 5091 tgid 5091 stack trace:
[ 86.204243][ T5727] free_frozen_pages+0xdf5/0x10b0
[ 86.209298][ T5727] rcu_core+0xaaa/0x1790
[ 86.213564][ T5727] handle_softirqs+0x2d4/0x9a0
[ 86.218516][ T5727] __irq_exit_rcu+0xf7/0x220
[ 86.223127][ T5727] irq_exit_rcu+0x9/0x30
[ 86.227396][ T5727] sysvec_apic_timer_interrupt+0xa4/0xc0
[ 86.233129][ T5727] asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 86.239244][ T5727]
[ 86.241573][ T5727] Memory state around the buggy address:
[ 86.247216][ T5727] ffff888027b18f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 86.255384][ T5727] ffff888027b18f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 86.263758][ T5727] >ffff888027b19000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 86.272011][ T5727] ^
[ 86.276479][ T5727] ffff888027b19080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 86.284834][ T5727] ffff888027b19100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 86.293052][ T5727] ==================================================================
[ 86.304673][ T5727] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 86.312122][ T5727] CPU: 0 UID: 0 PID: 5727 Comm: syz-executor Not tainted 6.14.0-rc2-syzkaller #0
[ 86.321530][ T5727] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 86.331799][ T5727] Call Trace:
[ 86.335112][ T5727]
[ 86.338088][ T5727] dump_stack_lvl+0x241/0x360
[ 86.342789][ T5727] ? __pfx_dump_stack_lvl+0x10/0x10
[ 86.348094][ T5727] ? __pfx__printk+0x10/0x10
[ 86.352816][ T5727] ? preempt_schedule+0xe1/0xf0
[ 86.357810][ T5727] ? vscnprintf+0x5d/0x90
[ 86.362431][ T5727] panic+0x349/0x880
[ 86.366399][ T5727] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 86.372623][ T5727] ? check_panic_on_warn+0x21/0xb0
[ 86.377811][ T5727] ? __pfx_panic+0x10/0x10
[ 86.382300][ T5727] ? _raw_spin_unlock_irqrestore+0x130/0x140
[ 86.388412][ T5727] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[ 86.394969][ T5727] ? print_report+0x502/0x550
[ 86.399808][ T5727] check_panic_on_warn+0x86/0xb0
[ 86.404863][ T5727] ? binder_add_device+0x5f/0xa0
[ 86.409860][ T5727] end_report+0x77/0x150
[ 86.414165][ T5727] kasan_report+0x154/0x180
[ 86.419081][ T5727] ? binder_add_device+0x5f/0xa0
[ 86.424064][ T5727] binder_add_device+0x5f/0xa0
[ 86.428862][ T5727] binderfs_binder_device_create+0x7bf/0x9c0
[ 86.434989][ T5727] binderfs_fill_super+0x944/0xd90
[ 86.440134][ T5727] ? __pfx_binderfs_fill_super+0x10/0x10
[ 86.445867][ T5727] ? shrinker_register+0x160/0x230
[ 86.451015][ T5727] ? sget_fc+0x909/0x9c0
[ 86.455310][ T5727] ? __pfx_set_anon_super_fc+0x10/0x10
[ 86.460897][ T5727] ? __pfx_binderfs_fill_super+0x10/0x10
[ 86.466604][ T5727] get_tree_nodev+0xb7/0x140
[ 86.471223][ T5727] vfs_get_tree+0x90/0x290
[ 86.475684][ T5727] do_new_mount+0x2be/0xb40
[ 86.480432][ T5727] ? __pfx_do_new_mount+0x10/0x10
[ 86.485799][ T5727] __se_sys_mount+0x2d6/0x3c0
[ 86.490573][ T5727] ? lockdep_hardirqs_on_prepare+0x43d/0x7a0
[ 86.496585][ T5727] ? __pfx___se_sys_mount+0x10/0x10
[ 86.501907][ T5727] ? __x64_sys_mount+0x20/0xc0
[ 86.506893][ T5727] do_syscall_64+0x82/0x160
[ 86.511879][ T5727] ? clear_bhb_loop+0x25/0x80
[ 86.516852][ T5727] ? clear_bhb_loop+0x25/0x80
[ 86.521818][ T5727] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 86.527986][ T5727] RIP: 0033:0x7f8fda1874ca
[ 86.532796][ T5727] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
[ 86.552813][ T5727] RSP: 002b:00007ffd66a11a28 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 86.561605][ T5727] RAX: ffffffffffffffda RBX: 00007f8fda201ecb RCX: 00007f8fda1874ca
[ 86.570985][ T5727] RDX: 00007f8fda20ec27 RSI: 00007f8fda201ecb RDI: 00007f8fda20ec27
[ 86.579071][ T5727] RBP: 00007f8fda2020c3 R08: 0000000000000000 R09: 00000000000001ff
[ 86.587525][ T5727] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8fda1e41c8
[ 86.595700][ T5727] R13: 00007f8fda1e41a8 R14: 0000000000000009 R15: 0000000000000000
[ 86.604066][ T5727]
[ 86.607826][ T5727] Kernel Offset: disabled
[ 86.612220][ T5727] 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-build3183288273=/tmp/go-build -gno-record-gcc-switches'
git status (err=)
HEAD detached at d3ccff6372
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/ccZ6AdM4.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