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 ffff88807ba50808 by task syz-executor.0/5065
CPU: 1 UID: 0 PID: 5065 Comm: syz-executor.0 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: 0033:0x7f338de7e5aa
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffef60c4458 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f338ded97bb RCX: 00007f338de7e5aa
RDX: 00007f338dee40a2 RSI: 00007f338ded97bb RDI: 00007f338dee40a2
RBP: 00007ffef60c4550 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00007f338dfb3f40 R14: 0000000000000006 R15: 0000000000000006
Allocated by task 5060:
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 5060:
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 ffff88807ba50800
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
freed 512-byte region [ffff88807ba50800, ffff88807ba50a00)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7ba50
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 ffff888014c41c80 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff888014c41c80 dead000000000100 dead000000000122
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000002 ffffea0001ee9401 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 4482, tgid 4482 (udevadm), ts 26026603352, free_ts 22839197498
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 1 tgid 1 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
free_contig_range+0x14c/0x420 mm/page_alloc.c:6678
destroy_args+0x94/0x4b0 mm/debug_vm_pgtable.c:1017
debug_vm_pgtable+0x4be/0x550 mm/debug_vm_pgtable.c:1397
do_one_initcall+0x248/0x850 init/main.c:1257
do_initcall_level+0x157/0x210 init/main.c:1319
do_initcalls+0x3f/0x80 init/main.c:1335
kernel_init_freeable+0x435/0x5d0 init/main.c:1568
kernel_init+0x1d/0x2b0 init/main.c:1457
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:
ffff88807ba50700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88807ba50780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88807ba50800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88807ba50880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88807ba50900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Warning: Permanently added '10.128.1.164' (ED25519) to the list of known hosts.
2025/02/16 01:14:43 ignoring optional flag "sandboxArg"="0"
2025/02/16 01:14:43 ignoring optional flag "type"="gce"
2025/02/16 01:14:43 parsed 1 programs
[ 62.052143][ T5025] cgroup: Unknown subsys name 'net'
[ 62.355865][ T5025] cgroup: Unknown subsys name 'cpuset'
[ 62.365574][ T5025] cgroup: Unknown subsys name 'rlimit'
[ 62.373804][ T5025] cgroup: Unknown subsys name 'memory'
[ 63.589644][ T5047] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 63.891108][ T5065] ==================================================================
[ 63.899408][ T5065] BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0
[ 63.907282][ T5065] Write of size 8 at addr ffff88807ba50808 by task syz-executor.0/5065
[ 63.915556][ T5065]
[ 63.917935][ T5065] CPU: 1 UID: 0 PID: 5065 Comm: syz-executor.0 Not tainted 6.14.0-rc2-syzkaller #0
[ 63.917954][ T5065] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 63.917967][ T5065] Call Trace:
[ 63.917975][ T5065]
[ 63.917982][ T5065] dump_stack_lvl+0x241/0x360
[ 63.918005][ T5065] ? __pfx_dump_stack_lvl+0x10/0x10
[ 63.918022][ T5065] ? __pfx__printk+0x10/0x10
[ 63.918039][ T5065] ? _printk+0xd5/0x120
[ 63.918054][ T5065] ? __virt_addr_valid+0x183/0x530
[ 63.918073][ T5065] ? __virt_addr_valid+0x183/0x530
[ 63.918092][ T5065] print_report+0x169/0x550
[ 63.918113][ T5065] ? __virt_addr_valid+0x183/0x530
[ 63.918131][ T5065] ? __virt_addr_valid+0x183/0x530
[ 63.918149][ T5065] ? __virt_addr_valid+0x45f/0x530
[ 63.918166][ T5065] ? __phys_addr+0xba/0x170
[ 63.918184][ T5065] ? binder_add_device+0x5f/0xa0
[ 63.918201][ T5065] kasan_report+0x143/0x180
[ 63.918223][ T5065] ? binder_add_device+0x5f/0xa0
[ 63.918242][ T5065] binder_add_device+0x5f/0xa0
[ 63.918259][ T5065] binderfs_binder_device_create+0x7bf/0x9c0
[ 63.918279][ T5065] binderfs_fill_super+0x944/0xd90
[ 63.918298][ T5065] ? __pfx_binderfs_fill_super+0x10/0x10
[ 63.918322][ T5065] ? shrinker_register+0x160/0x230
[ 63.918341][ T5065] ? sget_fc+0x909/0x9c0
[ 63.918365][ T5065] ? __pfx_set_anon_super_fc+0x10/0x10
[ 63.918384][ T5065] ? __pfx_binderfs_fill_super+0x10/0x10
[ 63.918400][ T5065] get_tree_nodev+0xb7/0x140
[ 63.918416][ T5065] vfs_get_tree+0x90/0x290
[ 63.918433][ T5065] do_new_mount+0x2be/0xb40
[ 63.918453][ T5065] ? __pfx_do_new_mount+0x10/0x10
[ 63.918473][ T5065] __se_sys_mount+0x2d6/0x3c0
[ 63.918491][ T5065] ? lockdep_hardirqs_on_prepare+0x43d/0x7a0
[ 63.918512][ T5065] ? __pfx___se_sys_mount+0x10/0x10
[ 63.918531][ T5065] ? __x64_sys_mount+0x20/0xc0
[ 63.918550][ T5065] do_syscall_64+0x82/0x160
[ 63.918569][ T5065] ? clear_bhb_loop+0x25/0x80
[ 63.918590][ T5065] ? clear_bhb_loop+0x25/0x80
[ 63.918611][ T5065] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 63.918634][ T5065] RIP: 0033:0x7f338de7e5aa
[ 63.918650][ T5065] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 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 b0 ff ff ff f7 d8 64 89 01 48
[ 63.918662][ T5065] RSP: 002b:00007ffef60c4458 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 63.918678][ T5065] RAX: ffffffffffffffda RBX: 00007f338ded97bb RCX: 00007f338de7e5aa
[ 63.918689][ T5065] RDX: 00007f338dee40a2 RSI: 00007f338ded97bb RDI: 00007f338dee40a2
[ 63.918700][ T5065] RBP: 00007ffef60c4550 R08: 0000000000000000 R09: 0000000000000000
[ 63.918709][ T5065] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
[ 63.918718][ T5065] R13: 00007f338dfb3f40 R14: 0000000000000006 R15: 0000000000000006
[ 63.918732][ T5065]
[ 63.918737][ T5065]
[ 64.191633][ T5065] Allocated by task 5060:
[ 64.195957][ T5065] kasan_save_track+0x3f/0x80
[ 64.200637][ T5065] __kasan_kmalloc+0x7d/0x90
[ 64.205571][ T5065] __kmalloc_cache_noprof+0x23e/0x360
[ 64.210950][ T5065] binderfs_binder_device_create+0x16c/0x9c0
[ 64.216924][ T5065] binderfs_fill_super+0x944/0xd90
[ 64.222028][ T5065] get_tree_nodev+0xb7/0x140
[ 64.226626][ T5065] vfs_get_tree+0x90/0x290
[ 64.231132][ T5065] do_new_mount+0x2be/0xb40
[ 64.235685][ T5065] __se_sys_mount+0x2d6/0x3c0
[ 64.240380][ T5065] do_syscall_64+0x82/0x160
[ 64.244899][ T5065] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 64.250937][ T5065]
[ 64.253289][ T5065] Freed by task 5060:
[ 64.257268][ T5065] kasan_save_track+0x3f/0x80
[ 64.261953][ T5065] kasan_save_free_info+0x40/0x50
[ 64.266978][ T5065] __kasan_slab_free+0x36/0x50
[ 64.271849][ T5065] kfree+0x181/0x430
[ 64.275878][ T5065] evict+0x4e8/0x9a0
[ 64.279814][ T5065] __dentry_kill+0x200/0x610
[ 64.284426][ T5065] shrink_kill+0xa9/0x2c0
[ 64.288788][ T5065] shrink_dentry_list+0x2c0/0x5b0
[ 64.293828][ T5065] shrink_dcache_parent+0xcb/0x3b0
[ 64.298964][ T5065] do_one_tree+0x23/0xe0
[ 64.303238][ T5065] shrink_dcache_for_umount+0xb4/0x180
[ 64.308795][ T5065] generic_shutdown_super+0x6a/0x2d0
[ 64.314205][ T5065] kill_litter_super+0x76/0xb0
[ 64.318980][ T5065] binderfs_kill_super+0x44/0x90
[ 64.323935][ T5065] deactivate_locked_super+0xc4/0x120
[ 64.329363][ T5065] cleanup_mnt+0x41f/0x4b0
[ 64.333807][ T5065] task_work_run+0x24f/0x310
[ 64.338428][ T5065] do_exit+0xa2a/0x28d0
[ 64.342640][ T5065] do_group_exit+0x207/0x2c0
[ 64.347263][ T5065] get_signal+0x16a6/0x1740
[ 64.351832][ T5065] arch_do_signal_or_restart+0x96/0x830
[ 64.357378][ T5065] syscall_exit_to_user_mode+0xcd/0x330
[ 64.363037][ T5065] do_syscall_64+0x8e/0x160
[ 64.367544][ T5065] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 64.373554][ T5065]
[ 64.375897][ T5065] The buggy address belongs to the object at ffff88807ba50800
[ 64.375897][ T5065] which belongs to the cache kmalloc-512 of size 512
[ 64.389982][ T5065] The buggy address is located 8 bytes inside of
[ 64.389982][ T5065] freed 512-byte region [ffff88807ba50800, ffff88807ba50a00)
[ 64.403609][ T5065]
[ 64.405963][ T5065] The buggy address belongs to the physical page:
[ 64.412402][ T5065] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7ba50
[ 64.421617][ T5065] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 64.430320][ T5065] flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
[ 64.438424][ T5065] page_type: f5(slab)
[ 64.442517][ T5065] raw: 00fff00000000040 ffff888014c41c80 dead000000000100 dead000000000122
[ 64.451374][ T5065] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 64.459974][ T5065] head: 00fff00000000040 ffff888014c41c80 dead000000000100 dead000000000122
[ 64.468666][ T5065] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 64.477354][ T5065] head: 00fff00000000002 ffffea0001ee9401 ffffffffffffffff 0000000000000000
[ 64.486142][ T5065] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[ 64.495178][ T5065] page dumped because: kasan: bad access detected
[ 64.501663][ T5065] page_owner tracks the page as allocated
[ 64.507487][ T5065] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4482, tgid 4482 (udevadm), ts 26026603352, free_ts 22839197498
[ 64.529413][ T5065] post_alloc_hook+0x1ec/0x220
[ 64.534208][ T5065] get_page_from_freelist+0x3607/0x3750
[ 64.539802][ T5065] __alloc_frozen_pages_noprof+0x256/0x690
[ 64.545631][ T5065] alloc_pages_mpol+0x311/0x660
[ 64.550517][ T5065] allocate_slab+0x8f/0x3a0
[ 64.555035][ T5065] ___slab_alloc+0xc35/0x14a0
[ 64.559721][ T5065] __slab_alloc+0x58/0xa0
[ 64.564055][ T5065] __kmalloc_cache_noprof+0x276/0x360
[ 64.569420][ T5065] kernfs_fop_open+0x3e0/0xd10
[ 64.574305][ T5065] do_dentry_open+0xdea/0x1960
[ 64.579185][ T5065] vfs_open+0x3b/0x370
[ 64.583297][ T5065] path_openat+0x2c7d/0x3590
[ 64.587916][ T5065] do_filp_open+0x27f/0x4e0
[ 64.592521][ T5065] do_sys_openat2+0x13e/0x1d0
[ 64.597304][ T5065] __x64_sys_openat+0x247/0x2a0
[ 64.602277][ T5065] do_syscall_64+0x82/0x160
[ 64.606808][ T5065] page last free pid 1 tgid 1 stack trace:
[ 64.612615][ T5065] free_frozen_pages+0xdf5/0x10b0
[ 64.617680][ T5065] free_contig_range+0x14c/0x420
[ 64.622646][ T5065] destroy_args+0x94/0x4b0
[ 64.627326][ T5065] debug_vm_pgtable+0x4be/0x550
[ 64.632340][ T5065] do_one_initcall+0x248/0x850
[ 64.637136][ T5065] do_initcall_level+0x157/0x210
[ 64.642088][ T5065] do_initcalls+0x3f/0x80
[ 64.646533][ T5065] kernel_init_freeable+0x435/0x5d0
[ 64.651763][ T5065] kernel_init+0x1d/0x2b0
[ 64.656099][ T5065] ret_from_fork+0x4b/0x80
[ 64.660522][ T5065] ret_from_fork_asm+0x1a/0x30
[ 64.665374][ T5065]
[ 64.667693][ T5065] Memory state around the buggy address:
[ 64.673418][ T5065] ffff88807ba50700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 64.681483][ T5065] ffff88807ba50780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 64.689567][ T5065] >ffff88807ba50800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 64.697727][ T5065] ^
[ 64.702073][ T5065] ffff88807ba50880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 64.710149][ T5065] ffff88807ba50900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 64.718266][ T5065] ==================================================================
[ 64.732944][ T5065] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 64.740299][ T5065] CPU: 1 UID: 0 PID: 5065 Comm: syz-executor.0 Not tainted 6.14.0-rc2-syzkaller #0
[ 64.749639][ T5065] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 64.759741][ T5065] Call Trace:
[ 64.763064][ T5065]
[ 64.766026][ T5065] dump_stack_lvl+0x241/0x360
[ 64.770854][ T5065] ? __pfx_dump_stack_lvl+0x10/0x10
[ 64.776107][ T5065] ? __pfx__printk+0x10/0x10
[ 64.780820][ T5065] ? preempt_schedule+0xe1/0xf0
[ 64.785706][ T5065] ? vscnprintf+0x5d/0x90
[ 64.790079][ T5065] panic+0x349/0x880
[ 64.794022][ T5065] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 64.800266][ T5065] ? check_panic_on_warn+0x21/0xb0
[ 64.805393][ T5065] ? __pfx_panic+0x10/0x10
[ 64.809958][ T5065] ? _raw_spin_unlock_irqrestore+0x130/0x140
[ 64.815981][ T5065] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[ 64.822346][ T5065] ? print_report+0x502/0x550
[ 64.827390][ T5065] check_panic_on_warn+0x86/0xb0
[ 64.832444][ T5065] ? binder_add_device+0x5f/0xa0
[ 64.837385][ T5065] end_report+0x77/0x150
[ 64.841662][ T5065] kasan_report+0x154/0x180
[ 64.846269][ T5065] ? binder_add_device+0x5f/0xa0
[ 64.851241][ T5065] binder_add_device+0x5f/0xa0
[ 64.856022][ T5065] binderfs_binder_device_create+0x7bf/0x9c0
[ 64.862287][ T5065] binderfs_fill_super+0x944/0xd90
[ 64.867409][ T5065] ? __pfx_binderfs_fill_super+0x10/0x10
[ 64.873225][ T5065] ? shrinker_register+0x160/0x230
[ 64.878444][ T5065] ? sget_fc+0x909/0x9c0
[ 64.882710][ T5065] ? __pfx_set_anon_super_fc+0x10/0x10
[ 64.888173][ T5065] ? __pfx_binderfs_fill_super+0x10/0x10
[ 64.893808][ T5065] get_tree_nodev+0xb7/0x140
[ 64.898401][ T5065] vfs_get_tree+0x90/0x290
[ 64.902834][ T5065] do_new_mount+0x2be/0xb40
[ 64.907366][ T5065] ? __pfx_do_new_mount+0x10/0x10
[ 64.912422][ T5065] __se_sys_mount+0x2d6/0x3c0
[ 64.917195][ T5065] ? lockdep_hardirqs_on_prepare+0x43d/0x7a0
[ 64.923217][ T5065] ? __pfx___se_sys_mount+0x10/0x10
[ 64.928442][ T5065] ? __x64_sys_mount+0x20/0xc0
[ 64.933252][ T5065] do_syscall_64+0x82/0x160
[ 64.937847][ T5065] ? clear_bhb_loop+0x25/0x80
[ 64.942555][ T5065] ? clear_bhb_loop+0x25/0x80
[ 64.947292][ T5065] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 64.953195][ T5065] RIP: 0033:0x7f338de7e5aa
[ 64.957613][ T5065] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 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 b0 ff ff ff f7 d8 64 89 01 48
[ 64.977231][ T5065] RSP: 002b:00007ffef60c4458 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 64.985670][ T5065] RAX: ffffffffffffffda RBX: 00007f338ded97bb RCX: 00007f338de7e5aa
[ 64.993741][ T5065] RDX: 00007f338dee40a2 RSI: 00007f338ded97bb RDI: 00007f338dee40a2
[ 65.001723][ T5065] RBP: 00007ffef60c4550 R08: 0000000000000000 R09: 0000000000000000
[ 65.009717][ T5065] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
[ 65.017773][ T5065] R13: 00007f338dfb3f40 R14: 0000000000000006 R15: 0000000000000006
[ 65.026095][ T5065]
[ 65.029461][ T5065] Kernel Offset: disabled
[ 65.033799][ T5065] 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-build4042878716=/tmp/go-build -gno-record-gcc-switches'
git status (err=)
HEAD detached at 2aa5052fed
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=2aa5052fed5f8993afacfce02174322df0f03ec4 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240612-135002'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-fuzzer github.com/google/syzkaller/syz-fuzzer
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=2aa5052fed5f8993afacfce02174322df0f03ec4 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240612-135002'" "-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=\"2aa5052fed5f8993afacfce02174322df0f03ec4\"