==================================================================
BUG: KASAN: use-after-free in __list_del_entry_valid+0x2f/0x120 lib/list_debug.c:46
Read of size 8 at addr ffff88811ebaa308 by task kworker/1:1/39
CPU: 1 PID: 39 Comm: kworker/1:1 Not tainted 5.15.161-syzkaller-00463-g8e36931104ac #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: events binder_deferred_func
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x151/0x1c0 lib/dump_stack.c:106
print_address_description+0x87/0x3b0 mm/kasan/report.c:248
__kasan_report mm/kasan/report.c:427 [inline]
kasan_report+0x179/0x1c0 mm/kasan/report.c:444
__asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309
__list_del_entry_valid+0x2f/0x120 lib/list_debug.c:46
__list_del_entry include/linux/list.h:132 [inline]
list_del_init include/linux/list.h:204 [inline]
binder_dequeue_work_head_ilocked drivers/android/binder.c:515 [inline]
binder_release_work+0xcd/0x680 drivers/android/binder.c:5185
binder_deferred_release drivers/android/binder.c:6341 [inline]
binder_deferred_func+0x1847/0x1bc0 drivers/android/binder.c:6376
process_one_work+0x6bb/0xc10 kernel/workqueue.c:2325
worker_thread+0xad5/0x12a0 kernel/workqueue.c:2472
kthread+0x421/0x510 kernel/kthread.c:337
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
</TASK>
Allocated by task 335:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:45 [inline]
set_alloc_info mm/kasan/common.c:433 [inline]
____kasan_kmalloc+0xdb/0x110 mm/kasan/common.c:512
__kasan_kmalloc+0x9/0x10 mm/kasan/common.c:521
kasan_kmalloc include/linux/kasan.h:227 [inline]
kmem_cache_alloc_trace+0x115/0x210 mm/slub.c:3267
kmalloc include/linux/slab.h:603 [inline]
kzalloc include/linux/slab.h:733 [inline]
binder_request_freeze_notification drivers/android/binder.c:3897 [inline]
binder_thread_write+0x9f5/0x6ec0 drivers/android/binder.c:4537
binder_ioctl_write_read+0x1ba/0xd00 drivers/android/binder.c:5472
binder_ioctl+0x371/0x2640 drivers/android/binder.c:5789
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl+0x114/0x190 fs/ioctl.c:860
__x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:860
x64_sys_call+0x98/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
Freed by task 39:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:45
kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
____kasan_slab_free+0x126/0x160 mm/kasan/common.c:365
__kasan_slab_free+0x11/0x20 mm/kasan/common.c:373
kasan_slab_free include/linux/kasan.h:193 [inline]
slab_free_hook mm/slub.c:1723 [inline]
slab_free_freelist_hook+0xbd/0x190 mm/slub.c:1749
slab_free mm/slub.c:3519 [inline]
kfree+0xc8/0x220 mm/slub.c:4579
binder_free_ref+0x128/0x260 drivers/android/binder.c:1467
binder_deferred_release drivers/android/binder.c:6336 [inline]
binder_deferred_func+0x171c/0x1bc0 drivers/android/binder.c:6376
process_one_work+0x6bb/0xc10 kernel/workqueue.c:2325
worker_thread+0xad5/0x12a0 kernel/workqueue.c:2472
kthread+0x421/0x510 kernel/kthread.c:337
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
The buggy address belongs to the object at ffff88811ebaa300
which belongs to the cache kmalloc-64 of size 64
The buggy address is located 8 bytes inside of
64-byte region [ffff88811ebaa300, ffff88811ebaa340)
The buggy address belongs to the page:
page:ffffea00047aea80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11ebaa
flags: 0x4000000000000200(slab|zone=1)
raw: 4000000000000200 0000000000000000 dead000000000122 ffff888100042780
raw: 0000000000000000 0000000080200020 00000001ffffffff 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 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 334, ts 64755460672, free_ts 64755056436
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1a3/0x1b0 mm/page_alloc.c:2605
prep_new_page+0x1b/0x110 mm/page_alloc.c:2611
get_page_from_freelist+0x3550/0x35d0 mm/page_alloc.c:4485
__alloc_pages+0x27e/0x8f0 mm/page_alloc.c:5779
allocate_slab mm/slub.c:1932 [inline]
new_slab+0x9a/0x4e0 mm/slub.c:1995
___slab_alloc+0x39e/0x830 mm/slub.c:3028
__slab_alloc+0x4a/0x90 mm/slub.c:3115
slab_alloc_node mm/slub.c:3206 [inline]
slab_alloc mm/slub.c:3248 [inline]
kmem_cache_alloc_trace+0x142/0x210 mm/slub.c:3265
kmalloc include/linux/slab.h:603 [inline]
get_mountpoint+0x212/0x450 fs/namespace.c:751
attach_recursive_mnt+0x16d/0x1560 fs/namespace.c:2170
graft_tree fs/namespace.c:2293 [inline]
do_add_mount fs/namespace.c:2908 [inline]
do_new_mount_fc fs/namespace.c:2947 [inline]
do_new_mount+0x7f2/0xb30 fs/namespace.c:3007
path_mount+0x671/0x1070 fs/namespace.c:3335
do_mount fs/namespace.c:3348 [inline]
__do_sys_mount fs/namespace.c:3556 [inline]
__se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3533
__x64_sys_mount+0xbf/0xd0 fs/namespace.c:3533
x64_sys_call+0x49d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
page last free stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
free_pages_prepare mm/page_alloc.c:1472 [inline]
free_pcp_prepare mm/page_alloc.c:1544 [inline]
free_unref_page_prepare+0x7c8/0x7d0 mm/page_alloc.c:3534
free_unref_page+0xe8/0x750 mm/page_alloc.c:3616
free_the_page mm/page_alloc.c:805 [inline]
__free_pages+0x61/0xf0 mm/page_alloc.c:5855
free_pages+0x7c/0x90 mm/page_alloc.c:5866
selinux_genfs_get_sid+0x24d/0x2a0 security/selinux/hooks.c:1375
inode_doinit_with_dentry+0x8d2/0x1070 security/selinux/hooks.c:1570
sb_finish_set_opts+0x8b8/0xa90 security/selinux/hooks.c:589
selinux_set_mnt_opts+0x1622/0x20d0 security/selinux/hooks.c:862
security_sb_set_mnt_opts+0x74/0xe0 security/security.c:996
vfs_get_tree+0x156/0x290 fs/super.c:1542
do_new_mount+0x2ba/0xb30 fs/namespace.c:3005
path_mount+0x671/0x1070 fs/namespace.c:3335
do_mount fs/namespace.c:3348 [inline]
__do_sys_mount fs/namespace.c:3556 [inline]
__se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3533
__x64_sys_mount+0xbf/0xd0 fs/namespace.c:3533
x64_sys_call+0x49d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
Memory state around the buggy address:
ffff88811ebaa200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88811ebaa280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88811ebaa300: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
^
ffff88811ebaa380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88811ebaa400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
general protection fault, probably for non-canonical address 0xfa33fc2160000004: 0000 [#1] PREEMPT SMP KASAN
KASAN: maybe wild-memory-access in range [0xd1a0010b00000020-0xd1a0010b00000027]
CPU: 1 PID: 39 Comm: kworker/1:1 Tainted: G B 5.15.161-syzkaller-00463-g8e36931104ac #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: events binder_deferred_func
RIP: 0010:__list_del_entry_valid+0x75/0x120 lib/list_debug.c:59
Code: 1e 48 85 db 74 68 4d 85 ff 74 74 48 ba 00 01 00 00 00 00 ad de 48 39 d3 74 76 48 83 c2 22 49 39 d7 74 7e 4c 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ff e8 3c b4 48 ff 49 8b 17 4c 39 f2 75
RSP: 0018:ffffc9000028fc00 EFLAGS: 00010a03
RAX: 1a34002160000004 RBX: ffff8881073dde00 RCX: ffffffff8269fff9
RDX: dead000000000122 RSI: 0000000000000282 RDI: ffff88811ebaa300
RBP: ffffc9000028fc20 R08: ffffffff814194db R09: 0000000000000003
R10: fffffbfff0e99e4c R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88811ebaa300 R14: ffff88811ebaa300 R15: d1a0010b00000027
FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f23265d00e0 CR3: 000000011ebba000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
__list_del_entry include/linux/list.h:132 [inline]
list_del_init include/linux/list.h:204 [inline]
binder_dequeue_work_head_ilocked drivers/android/binder.c:515 [inline]
binder_release_work+0xcd/0x680 drivers/android/binder.c:5185
binder_deferred_release drivers/android/binder.c:6341 [inline]
binder_deferred_func+0x1847/0x1bc0 drivers/android/binder.c:6376
process_one_work+0x6bb/0xc10 kernel/workqueue.c:2325
worker_thread+0xad5/0x12a0 kernel/workqueue.c:2472
kthread+0x421/0x510 kernel/kthread.c:337
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
</TASK>
Modules linked in:
---[ end trace 0e057a23bce586ed ]---
RIP: 0010:__list_del_entry_valid+0x75/0x120 lib/list_debug.c:59
Code: 1e 48 85 db 74 68 4d 85 ff 74 74 48 ba 00 01 00 00 00 00 ad de 48 39 d3 74 76 48 83 c2 22 49 39 d7 74 7e 4c 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ff e8 3c b4 48 ff 49 8b 17 4c 39 f2 75
RSP: 0018:ffffc9000028fc00 EFLAGS: 00010a03
RAX: 1a34002160000004 RBX: ffff8881073dde00 RCX: ffffffff8269fff9
RDX: dead000000000122 RSI: 0000000000000282 RDI: ffff88811ebaa300
RBP: ffffc9000028fc20 R08: ffffffff814194db R09: 0000000000000003
R10: fffffbfff0e99e4c R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88811ebaa300 R14: ffff88811ebaa300 R15: d1a0010b00000027
FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f23265d00e0 CR3: 0000000006a0f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 48 85 db test %rbx,%rbx
3: 74 68 je 0x6d
5: 4d 85 ff test %r15,%r15
8: 74 74 je 0x7e
a: 48 ba 00 01 00 00 00 movabs $0xdead000000000100,%rdx
11: 00 ad de
14: 48 39 d3 cmp %rdx,%rbx
17: 74 76 je 0x8f
19: 48 83 c2 22 add $0x22,%rdx
1d: 49 39 d7 cmp %rdx,%r15
20: 74 7e je 0xa0
22: 4c 89 f8 mov %r15,%rax
25: 48 c1 e8 03 shr $0x3,%rax
* 29: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction
2e: 74 08 je 0x38
30: 4c 89 ff mov %r15,%rdi
33: e8 3c b4 48 ff call 0xff48b474
38: 49 8b 17 mov (%r15),%rdx
3b: 4c 39 f2 cmp %r14,%rdx
3e: 75 .byte 0x75