==================================================================
BUG: KASAN: slab-use-after-free in __list_del_entry_valid_or_report+0x14c/0x1c0 lib/list_debug.c:49
Read of size 8 at addr ffff88801e3b9c08 by task kworker/1:2/963
CPU: 1 UID: 0 PID: 963 Comm: kworker/1:2 Not tainted 6.12.0-rc5-syzkaller-00308-g3e5e6c9900c3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events binder_deferred_func
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
__list_del_entry_valid_or_report+0x14c/0x1c0 lib/list_debug.c:49
__list_del_entry_valid include/linux/list.h:124 [inline]
__list_del_entry include/linux/list.h:215 [inline]
list_del_init include/linux/list.h:287 [inline]
binder_dequeue_work_head_ilocked drivers/android/binder.c:540 [inline]
binder_release_work+0x9b/0x490 drivers/android/binder.c:5110
binder_deferred_release drivers/android/binder.c:6261 [inline]
binder_deferred_func+0xe6e/0x12e0 drivers/android/binder.c:6296
process_one_work+0x9c8/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Allocated by task 5897:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394
kmalloc_noprof include/linux/slab.h:878 [inline]
kzalloc_noprof include/linux/slab.h:1014 [inline]
binder_request_freeze_notification drivers/android/binder.c:3855 [inline]
binder_thread_write+0xe19/0x4c60 drivers/android/binder.c:4485
binder_ioctl_write_read drivers/android/binder.c:5387 [inline]
binder_ioctl+0x265b/0x6fa0 drivers/android/binder.c:5718
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl fs/ioctl.c:893 [inline]
__x64_sys_ioctl+0x192/0x220 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task 963:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:2342 [inline]
slab_free mm/slub.c:4579 [inline]
kfree+0x14f/0x4b0 mm/slub.c:4727
binder_free_ref drivers/android/binder.c:1355 [inline]
binder_deferred_release drivers/android/binder.c:6256 [inline]
binder_deferred_func+0xdd7/0x12e0 drivers/android/binder.c:6296
process_one_work+0x9c8/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
The buggy address belongs to the object at ffff88801e3b9c00
which belongs to the cache kmalloc-64 of size 64
The buggy address is located 8 bytes inside of
freed 64-byte region [ffff88801e3b9c00, ffff88801e3b9c40)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1e3b9
anon flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000000 ffff88801b0418c0 ffffea0000bd2b80 dead000000000005
raw: 0000000000000000 0000000080200020 00000001f5000000 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 2, tgid 2 (kthreadd), ts 12429811391, free_ts 0
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1537
prep_new_page mm/page_alloc.c:1545 [inline]
get_page_from_freelist+0x101e/0x3070 mm/page_alloc.c:3457
__alloc_pages_noprof+0x223/0x25a0 mm/page_alloc.c:4733
alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2265
alloc_slab_page mm/slub.c:2412 [inline]
allocate_slab mm/slub.c:2578 [inline]
new_slab+0x2ba/0x3f0 mm/slub.c:2631
___slab_alloc+0xdac/0x1880 mm/slub.c:3818
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3908
__slab_alloc_node mm/slub.c:3961 [inline]
slab_alloc_node mm/slub.c:4122 [inline]
__do_kmalloc_node mm/slub.c:4263 [inline]
__kmalloc_noprof+0x367/0x400 mm/slub.c:4276
kmalloc_noprof include/linux/slab.h:882 [inline]
kzalloc_noprof include/linux/slab.h:1014 [inline]
lsm_blob_alloc+0x68/0x90 security/security.c:685
lsm_task_alloc security/security.c:772 [inline]
security_task_alloc+0x2d/0x260 security/security.c:3159
copy_process+0x24d1/0x8cb0 kernel/fork.c:2354
kernel_clone+0xfd/0x960 kernel/fork.c:2784
kernel_thread+0xc0/0x100 kernel/fork.c:2846
create_kthread kernel/kthread.c:412 [inline]
kthreadd+0x4ef/0x7d0 kernel/kthread.c:767
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
page_owner free stack trace missing
Memory state around the buggy address:
ffff88801e3b9b00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
ffff88801e3b9b80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff88801e3b9c00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
^
ffff88801e3b9c80: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc
ffff88801e3b9d00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in __list_del_entry_valid_or_report+0x166/0x1c0 lib/list_debug.c:50
Read of size 8 at addr ffff88801e3b9c00 by task kworker/1:2/963
CPU: 1 UID: 0 PID: 963 Comm: kworker/1:2 Tainted: G B 6.12.0-rc5-syzkaller-00308-g3e5e6c9900c3 #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events binder_deferred_func
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
__list_del_entry_valid_or_report+0x166/0x1c0 lib/list_debug.c:50
__list_del_entry_valid include/linux/list.h:124 [inline]
__list_del_entry include/linux/list.h:215 [inline]
list_del_init include/linux/list.h:287 [inline]
binder_dequeue_work_head_ilocked drivers/android/binder.c:540 [inline]
binder_release_work+0x9b/0x490 drivers/android/binder.c:5110
binder_deferred_release drivers/android/binder.c:6261 [inline]
binder_deferred_func+0xe6e/0x12e0 drivers/android/binder.c:6296
process_one_work+0x9c8/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Allocated by task 5897:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394
kmalloc_noprof include/linux/slab.h:878 [inline]
kzalloc_noprof include/linux/slab.h:1014 [inline]
binder_request_freeze_notification drivers/android/binder.c:3855 [inline]
binder_thread_write+0xe19/0x4c60 drivers/android/binder.c:4485
binder_ioctl_write_read drivers/android/binder.c:5387 [inline]
binder_ioctl+0x265b/0x6fa0 drivers/android/binder.c:5718
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl fs/ioctl.c:893 [inline]
__x64_sys_ioctl+0x192/0x220 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task 963:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:2342 [inline]
slab_free mm/slub.c:4579 [inline]
kfree+0x14f/0x4b0 mm/slub.c:4727
binder_free_ref drivers/android/binder.c:1355 [inline]
binder_deferred_release drivers/android/binder.c:6256 [inline]
binder_deferred_func+0xdd7/0x12e0 drivers/android/binder.c:6296
process_one_work+0x9c8/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
The buggy address belongs to the object at ffff88801e3b9c00
which belongs to the cache kmalloc-64 of size 64
The buggy address is located 0 bytes inside of
freed 64-byte region [ffff88801e3b9c00, ffff88801e3b9c40)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1e3b9
anon flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000000 ffff88801b0418c0 ffffea0000bd2b80 dead000000000005
raw: 0000000000000000 0000000080200020 00000001f5000000 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 2, tgid 2 (kthreadd), ts 12429811391, free_ts 0
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1537
prep_new_page mm/page_alloc.c:1545 [inline]
get_page_from_freelist+0x101e/0x3070 mm/page_alloc.c:3457
__alloc_pages_noprof+0x223/0x25a0 mm/page_alloc.c:4733
alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2265
alloc_slab_page mm/slub.c:2412 [inline]
allocate_slab mm/slub.c:2578 [inline]
new_slab+0x2ba/0x3f0 mm/slub.c:2631
___slab_alloc+0xdac/0x1880 mm/slub.c:3818
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3908
__slab_alloc_node mm/slub.c:3961 [inline]
slab_alloc_node mm/slub.c:4122 [inline]
__do_kmalloc_node mm/slub.c:4263 [inline]
__kmalloc_noprof+0x367/0x400 mm/slub.c:4276
kmalloc_noprof include/linux/slab.h:882 [inline]
kzalloc_noprof include/linux/slab.h:1014 [inline]
lsm_blob_alloc+0x68/0x90 security/security.c:685
lsm_task_alloc security/security.c:772 [inline]
security_task_alloc+0x2d/0x260 security/security.c:3159
copy_process+0x24d1/0x8cb0 kernel/fork.c:2354
kernel_clone+0xfd/0x960 kernel/fork.c:2784
kernel_thread+0xc0/0x100 kernel/fork.c:2846
create_kthread kernel/kthread.c:412 [inline]
kthreadd+0x4ef/0x7d0 kernel/kthread.c:767
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
page_owner free stack trace missing
Memory state around the buggy address:
ffff88801e3b9b00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
ffff88801e3b9b80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff88801e3b9c00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
^
ffff88801e3b9c80: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc
ffff88801e3b9d00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
==================================================================
Oops: general protection fault, probably for non-canonical address 0xe0907c3da0000078: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: maybe wild-memory-access in range [0x048401ed000003c0-0x048401ed000003c7]
CPU: 1 UID: 0 PID: 963 Comm: kworker/1:2 Tainted: G B 6.12.0-rc5-syzkaller-00308-g3e5e6c9900c3 #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events binder_deferred_func
RIP: 0010:__list_del_entry_valid_or_report+0x95/0x1c0 lib/list_debug.c:62
Code: 0f 84 8a 00 00 00 48 b8 22 01 00 00 00 00 ad de 48 39 c1 0f 84 86 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 cf 48 c1 ef 03 <80> 3c 07 00 0f 85 f1 00 00 00 48 8b 01 48 39 f0 75 75 48 8d 7a 08
RSP: 0018:ffffc900037ffbd8 EFLAGS: 00010216
RAX: dffffc0000000000 RBX: ffff88801e3b9c00 RCX: 048401ed000003c3
RDX: ffff888029a9f700 RSI: ffff88801e3b9c00 RDI: 0090803da0000078
RBP: 0000000000000001 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 3d3d3d3d3d3d3d3d R12: dffffc0000000000
R13: ffff88807cbac2d0 R14: ffff88807cbac0d8 R15: ffff88801e3b9c08
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc4e2f720d0 CR3: 000000000df7c000 CR4: 0000000000350ef0
Call Trace:
__list_del_entry_valid include/linux/list.h:124 [inline]
__list_del_entry include/linux/list.h:215 [inline]
list_del_init include/linux/list.h:287 [inline]
binder_dequeue_work_head_ilocked drivers/android/binder.c:540 [inline]
binder_release_work+0x9b/0x490 drivers/android/binder.c:5110
binder_deferred_release drivers/android/binder.c:6261 [inline]
binder_deferred_func+0xe6e/0x12e0 drivers/android/binder.c:6296
process_one_work+0x9c8/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0x95/0x1c0 lib/list_debug.c:62
Code: 0f 84 8a 00 00 00 48 b8 22 01 00 00 00 00 ad de 48 39 c1 0f 84 86 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 cf 48 c1 ef 03 <80> 3c 07 00 0f 85 f1 00 00 00 48 8b 01 48 39 f0 75 75 48 8d 7a 08
RSP: 0018:ffffc900037ffbd8 EFLAGS: 00010216
RAX: dffffc0000000000 RBX: ffff88801e3b9c00 RCX: 048401ed000003c3
RDX: ffff888029a9f700 RSI: ffff88801e3b9c00 RDI: 0090803da0000078
RBP: 0000000000000001 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 3d3d3d3d3d3d3d3d R12: dffffc0000000000
R13: ffff88807cbac2d0 R14: ffff88807cbac0d8 R15: ffff88801e3b9c08
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc4e2f720d0 CR3: 000000000df7c000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
0: 0f 84 8a 00 00 00 je 0x90
6: 48 b8 22 01 00 00 00 movabs $0xdead000000000122,%rax
d: 00 ad de
10: 48 39 c1 cmp %rax,%rcx
13: 0f 84 86 00 00 00 je 0x9f
19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
20: fc ff df
23: 48 89 cf mov %rcx,%rdi
26: 48 c1 ef 03 shr $0x3,%rdi
* 2a: 80 3c 07 00 cmpb $0x0,(%rdi,%rax,1) <-- trapping instruction
2e: 0f 85 f1 00 00 00 jne 0x125
34: 48 8b 01 mov (%rcx),%rax
37: 48 39 f0 cmp %rsi,%rax
3a: 75 75 jne 0xb1
3c: 48 8d 7a 08 lea 0x8(%rdx),%rdi