==================================================================
BUG: KASAN: use-after-free in __lock_acquire.constprop.0+0xabd/0xb30 kernel/locking/lockdep.c:4886
Read of size 8 at addr ffff888118c1a600 by task swapper/1/0
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.15.160-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x8e/0xdd lib/dump_stack.c:106
print_address_description.constprop.0.cold+0x6c/0x309 mm/kasan/report.c:248
__kasan_report mm/kasan/report.c:434 [inline]
kasan_report.cold+0x83/0xdf mm/kasan/report.c:451
__lock_acquire.constprop.0+0xabd/0xb30 kernel/locking/lockdep.c:4886
lock_acquire kernel/locking/lockdep.c:5623 [inline]
lock_acquire+0x11a/0x230 kernel/locking/lockdep.c:5588
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x26/0x40 kernel/locking/spinlock.c:162
try_to_wake_up+0x8c/0xfd0 kernel/sched/core.c:4030
call_timer_fn+0x184/0x400 kernel/time/timer.c:1451
expire_timers kernel/time/timer.c:1496 [inline]
__run_timers.part.0+0x549/0x870 kernel/time/timer.c:1767
__run_timers kernel/time/timer.c:1745 [inline]
run_timer_softirq+0x80/0x120 kernel/time/timer.c:1780
__do_softirq+0x14a/0x59a kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu kernel/softirq.c:637 [inline]
irq_exit_rcu+0xce/0x110 kernel/softirq.c:649
sysvec_apic_timer_interrupt+0x6f/0x90 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:40 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:75 [inline]
RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:110 [inline]
RIP: 0010:acpi_idle_do_entry+0x1f4/0x270 drivers/acpi/processor_idle.c:570
Code: eb 03 83 e3 01 89 de e8 7a c7 c7 fc 84 db 75 b0 e8 b1 ce c7 fc 66 90 e8 aa ce c7 fc 0f 00 2d e3 27 78 00 e8 9e ce c7 fc fb f4 eb 93 e8 94 ce c7 fc 48 89 ef e8 ac f4 ff ff 5b 5d e9 85 ce c7
RSP: 0018:ffffc900000efd18 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff84958766
RDX: ffff8881002d9c40 RSI: ffffffff84958782 RDI: 0000000000000001
RBP: ffff8881069f4864 R08: 0000000000000000 R09: ffff8881002d9c47
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
R13: ffff8881069f4800 R14: ffff8881069f4864 R15: ffff8881047f7804
acpi_idle_enter+0x33f/0x4a0 drivers/acpi/processor_idle.c:705
cpuidle_enter_state+0x1b4/0xcd0 drivers/cpuidle/cpuidle.c:237
cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:351
call_cpuidle kernel/sched/idle.c:158 [inline]
cpuidle_idle_call kernel/sched/idle.c:239 [inline]
do_idle+0x381/0x500 kernel/sched/idle.c:306
cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:403
start_secondary+0x20d/0x2b0 arch/x86/kernel/smpboot.c:281
secondary_startup_64_no_verify+0xb0/0xbb
Allocated by task 2:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
__kasan_slab_alloc+0x61/0x80 mm/kasan/common.c:467
kasan_slab_alloc include/linux/kasan.h:254 [inline]
slab_post_alloc_hook mm/slab.h:519 [inline]
slab_alloc_node mm/slub.c:3220 [inline]
kmem_cache_alloc_node+0x22b/0x340 mm/slub.c:3256
alloc_task_struct_node kernel/fork.c:171 [inline]
dup_task_struct kernel/fork.c:894 [inline]
copy_process+0x5d2/0x7d20 kernel/fork.c:2038
kernel_clone+0xe7/0xbd0 kernel/fork.c:2604
kernel_thread+0xb5/0xf0 kernel/fork.c:2656
create_kthread kernel/kthread.c:357 [inline]
kthreadd+0x469/0x680 kernel/kthread.c:701
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
Freed by task 0:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
kasan_set_track+0x1c/0x30 mm/kasan/common.c:46
kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:360
____kasan_slab_free mm/kasan/common.c:366 [inline]
____kasan_slab_free mm/kasan/common.c:328 [inline]
__kasan_slab_free+0xe0/0x110 mm/kasan/common.c:374
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:1705 [inline]
slab_free_freelist_hook mm/slub.c:1731 [inline]
slab_free mm/slub.c:3499 [inline]
kmem_cache_free+0x7e/0x450 mm/slub.c:3515
__put_task_struct+0x1e0/0x340 kernel/fork.c:763
put_task_struct include/linux/sched/task.h:141 [inline]
delayed_put_task_struct+0x192/0x1f0 kernel/exit.c:220
rcu_do_batch kernel/rcu/tree.c:2523 [inline]
rcu_core+0x58c/0x1190 kernel/rcu/tree.c:2763
__do_softirq+0x14a/0x59a kernel/softirq.c:558
Last potentially related work creation:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
kasan_record_aux_stack+0xc5/0xf0 mm/kasan/generic.c:348
__call_rcu kernel/rcu/tree.c:3007 [inline]
call_rcu+0x98/0x6d0 kernel/rcu/tree.c:3087
put_task_struct_rcu_user+0x7f/0xb0 kernel/exit.c:226
context_switch kernel/sched/core.c:5033 [inline]
__schedule+0x895/0x1d80 kernel/sched/core.c:6376
preempt_schedule_common kernel/sched/core.c:6552 [inline]
__cond_resched+0x3e/0x70 kernel/sched/core.c:8252
_cond_resched include/linux/sched.h:2036 [inline]
gc_worker+0xa28/0x1470 net/netfilter/nf_conntrack_core.c:1544
process_one_work+0x8d5/0x1260 kernel/workqueue.c:2310
worker_thread+0x552/0xf40 kernel/workqueue.c:2457
kthread+0x327/0x3e0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
Second to last potentially related work creation:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
kasan_record_aux_stack+0xc5/0xf0 mm/kasan/generic.c:348
__call_rcu kernel/rcu/tree.c:3007 [inline]
call_rcu+0x98/0x6d0 kernel/rcu/tree.c:3087
put_task_struct_rcu_user+0x7f/0xb0 kernel/exit.c:226
release_task+0xc10/0x14a0 kernel/exit.c:272
wait_task_zombie kernel/exit.c:1179 [inline]
wait_consider_task+0x2ae5/0x33c0 kernel/exit.c:1406
do_wait_pid kernel/exit.c:1537 [inline]
do_wait+0x5b8/0xb00 kernel/exit.c:1579
kernel_wait+0x9c/0x150 kernel/exit.c:1766
call_usermodehelper_exec_sync kernel/umh.c:139 [inline]
call_usermodehelper_exec_work+0xf5/0x180 kernel/umh.c:166
process_one_work+0x8d5/0x1260 kernel/workqueue.c:2310
worker_thread+0x552/0xf40 kernel/workqueue.c:2457
kthread+0x327/0x3e0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
The buggy address belongs to the object at ffff888118c19c40
which belongs to the cache task_struct of size 6976
The buggy address is located 2496 bytes inside of
6976-byte region [ffff888118c19c40, ffff888118c1b780)
The buggy address belongs to the page:
page:ffffea0004630600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x118c18
head:ffffea0004630600 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x200000000010200(slab|head|node=0|zone=2)
raw: 0200000000010200 0000000000000000 0000000100000001 ffff8881001903c0
raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 9, ts 44953836694, free_ts 44936699509
prep_new_page mm/page_alloc.c:2426 [inline]
get_page_from_freelist+0x165a/0x2900 mm/page_alloc.c:4159
__alloc_pages+0x2b3/0x590 mm/page_alloc.c:5423
alloc_pages+0x16f/0x3d0 mm/mempolicy.c:2185
alloc_slab_page mm/slub.c:1775 [inline]
allocate_slab+0x2eb/0x430 mm/slub.c:1912
new_slab mm/slub.c:1975 [inline]
___slab_alloc+0xb1c/0xf80 mm/slub.c:3008
__slab_alloc mm/slub.c:3095 [inline]
slab_alloc_node mm/slub.c:3186 [inline]
kmem_cache_alloc_node+0x2e3/0x340 mm/slub.c:3256
alloc_task_struct_node kernel/fork.c:171 [inline]
dup_task_struct kernel/fork.c:894 [inline]
copy_process+0x5d2/0x7d20 kernel/fork.c:2038
kernel_clone+0xe7/0xbd0 kernel/fork.c:2604
kernel_thread+0xb5/0xf0 kernel/fork.c:2656
call_usermodehelper_exec_sync kernel/umh.c:135 [inline]
call_usermodehelper_exec_work+0x69/0x180 kernel/umh.c:166
process_one_work+0x8d5/0x1260 kernel/workqueue.c:2310
worker_thread+0x552/0xf40 kernel/workqueue.c:2457
kthread+0x327/0x3e0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1340 [inline]
free_pcp_prepare+0x34e/0x730 mm/page_alloc.c:1391
free_unref_page_prepare mm/page_alloc.c:3317 [inline]
free_unref_page+0x19/0x4b0 mm/page_alloc.c:3396
__unfreeze_partials+0x27d/0x2a0 mm/slub.c:2507
qlink_free mm/kasan/quarantine.c:157 [inline]
qlist_free_all+0x68/0x110 mm/kasan/quarantine.c:176
kasan_quarantine_reduce+0x180/0x1f0 mm/kasan/quarantine.c:283
__kasan_slab_alloc+0x73/0x80 mm/kasan/common.c:444
kasan_slab_alloc include/linux/kasan.h:254 [inline]
slab_post_alloc_hook mm/slab.h:519 [inline]
slab_alloc_node mm/slub.c:3220 [inline]
slab_alloc mm/slub.c:3228 [inline]
kmem_cache_alloc+0x211/0x310 mm/slub.c:3233
vm_area_alloc+0x1c/0x110 kernel/fork.c:349
mmap_region+0x81a/0x1350 mm/mmap.c:1771
do_mmap+0x869/0xfc0 mm/mmap.c:1575
vm_mmap_pgoff+0x1b7/0x280 mm/util.c:551
ksys_mmap_pgoff+0x417/0x560 mm/mmap.c:1624
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x33/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
Memory state around the buggy address:
ffff888118c1a500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888118c1a580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888118c1a600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888118c1a680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888118c1a700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
0: eb 03 jmp 0x5
2: 83 e3 01 and $0x1,%ebx
5: 89 de mov %ebx,%esi
7: e8 7a c7 c7 fc call 0xfcc7c786
c: 84 db test %bl,%bl
e: 75 b0 jne 0xffffffc0
10: e8 b1 ce c7 fc call 0xfcc7cec6
15: 66 90 xchg %ax,%ax
17: e8 aa ce c7 fc call 0xfcc7cec6
1c: 0f 00 2d e3 27 78 00 verw 0x7827e3(%rip) # 0x782806
23: e8 9e ce c7 fc call 0xfcc7cec6
28: fb sti
29: f4 hlt
* 2a: fa cli <-- trapping instruction
2b: eb 93 jmp 0xffffffc0
2d: e8 94 ce c7 fc call 0xfcc7cec6
32: 48 89 ef mov %rbp,%rdi
35: e8 ac f4 ff ff call 0xfffff4e6
3a: 5b pop %rbx
3b: 5d pop %rbp
3c: e9 .byte 0xe9
3d: 85 ce test %ecx,%esi
3f: c7 .byte 0xc7