R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd55a6101f R14: 00007f1513da4300 R15: 0000000000022000
==================================================================
BUG: KASAN: slab-use-after-free in __lock_acquire+0x334f/0x4360
Read of size 8 at addr ffff88800ee10980 by task syz-executor.7/10136
CPU: 0 UID: 0 PID: 10136 Comm: syz-executor.7 Not tainted 6.13.0-rc3-next-20241220 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
dump_stack_lvl+0xca/0x120
print_report+0xcb/0x620
kasan_report+0xbd/0xf0
__lock_acquire+0x334f/0x4360
lock_acquire.part.0+0xeb/0x320
_raw_spin_lock_irqsave+0x3a/0x60
try_to_wake_up+0x9f/0x1880
io_sq_thread_park+0xac/0xe0
io_sq_thread_finish+0x64/0x290
io_sq_offload_create+0x162/0x1110
io_uring_setup+0x17da/0x32f0
__x64_sys_io_uring_setup+0x99/0x160
do_syscall_64+0xbf/0x1d0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8d61265b19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8d5e7db108 EFLAGS: 00000202 ORIG_RAX: 00000000000001a9
RAX: ffffffffffffffda RBX: 00007f8d61378f60 RCX: 00007f8d61265b19
RDX: 0000000020ffe000 RSI: 00000000200004c0 RDI: 00000000000041cd
RBP: 00000000200004c0 R08: 0000000020000580 R09: 0000000020000580
R10: 0000000020000540 R11: 0000000000000202 R12: 0000000020000580
R13: 0000000020ffe000 R14: 0000000020000540 R15: 0000000020ffe000
Allocated by task 10136:
kasan_save_stack+0x24/0x50
kasan_save_track+0x14/0x30
__kasan_slab_alloc+0x59/0x70
kmem_cache_alloc_node_noprof+0x14c/0x3e0
copy_process+0x440/0x70e0
create_io_thread+0xac/0xf0
io_sq_offload_create+0xaf7/0x1110
io_uring_setup+0x17da/0x32f0
__x64_sys_io_uring_setup+0x99/0x160
do_syscall_64+0xbf/0x1d0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task 23:
kasan_save_stack+0x24/0x50
kasan_save_track+0x14/0x30
kasan_save_free_info+0x3a/0x60
__kasan_slab_free+0x38/0x50
kmem_cache_free+0x138/0x470
delayed_put_task_struct+0x108/0x2b0
rcu_core+0x7c9/0x17a0
handle_softirqs+0x1b1/0x770
run_ksoftirqd+0x2e/0x60
smpboot_thread_fn+0x3eb/0x930
kthread+0x3ab/0x720
ret_from_fork+0x48/0x80
ret_from_fork_asm+0x1a/0x30
Last potentially related work creation:
kasan_save_stack+0x24/0x50
kasan_record_aux_stack+0x89/0xa0
__call_rcu_common.constprop.0+0x6a/0xb70
put_task_struct_rcu_user+0x75/0xc0
__schedule+0xc53/0x3030
schedule+0xdb/0x340
do_nanosleep+0x155/0x500
hrtimer_nanosleep+0x13d/0x340
common_nsleep+0xaa/0xd0
__x64_sys_clock_nanosleep+0x332/0x480
do_syscall_64+0xbf/0x1d0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
The buggy address belongs to the object at ffff88800ee10000
which belongs to the cache task_struct of size 6848
The buggy address is located 2432 bytes inside of
freed 6848-byte region [ffff88800ee10000, ffff88800ee11ac0)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xee10
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff88800e41d281
anon flags: 0x100000000000040(head|node=0|zone=1)
page_type: f5(slab)
raw: 0100000000000040 ffff888008fee640 0000000000000000 dead000000000001
raw: 0000000000000000 0000000080040004 00000000f5000000 ffff88800e41d281
head: 0100000000000040 ffff888008fee640 0000000000000000 dead000000000001
head: 0000000000000000 0000000080040004 00000000f5000000 ffff88800e41d281
head: 0100000000000003 ffffea00003b8401 ffffffffffffffff 0000000000000000
head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff88800ee10880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88800ee10900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88800ee10980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88800ee10a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88800ee10a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 UID: 0 PID: 10142 Comm: syz-executor.5 Tainted: G B 6.13.0-rc3-next-20241220 #1
Tainted: [B]=BAD_PAGE
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
dump_stack_lvl+0xfa/0x120
should_fail_ex+0x4d7/0x5e0
should_failslab+0xc2/0x120
kmem_cache_alloc_node_noprof+0x72/0x3e0
copy_process+0x440/0x70e0
create_io_thread+0xac/0xf0
io_sq_offload_create+0xaf7/0x1110
io_uring_setup+0x17da/0x32f0
__x64_sys_io_uring_setup+0x99/0x160
do_syscall_64+0xbf/0x1d0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f56c31c7b19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f56c071c108 EFLAGS: 00000202 ORIG_RAX: 00000000000001a9
RAX: ffffffffffffffda RBX: 00007f56c32db020 RCX: 00007f56c31c7b19
RDX: 0000000020ffe000 RSI: 00000000200004c0 RDI: 00000000000041cd
RBP: 00000000200004c0 R08: 0000000020000580 R09: 0000000020000580
R10: 0000000020000540 R11: 0000000000000202 R12: 0000000020000580
R13: 0000000020ffe000 R14: 0000000020000540 R15: 0000000020ffe000