==================================================================
BUG: KASAN: slab-use-after-free in __lock_acquire+0x3ffd/0x5df0 kernel/locking/lockdep.c:4942
Read of size 8 at addr ffff88801578e340 by task swapper/1/0
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.4.0-rc1-syzkaller-00071-g105131df9c3b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
print_address_description.constprop.0+0x2c/0x3c0 mm/kasan/report.c:351
print_report mm/kasan/report.c:462 [inline]
kasan_report+0x11c/0x130 mm/kasan/report.c:572
__lock_acquire+0x3ffd/0x5df0 kernel/locking/lockdep.c:4942
lock_acquire kernel/locking/lockdep.c:5691 [inline]
lock_acquire+0x1b1/0x520 kernel/locking/lockdep.c:5656
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3d/0x60 kernel/locking/spinlock.c:162
try_to_wake_up+0xab/0x1c40 kernel/sched/core.c:4191
call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
expire_timers+0x29b/0x4b0 kernel/time/timer.c:1751
__run_timers kernel/time/timer.c:2022 [inline]
__run_timers kernel/time/timer.c:1995 [inline]
run_timer_softirq+0x326/0x910 kernel/time/timer.c:2035
__do_softirq+0x1d4/0x905 kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x114/0x190 kernel/softirq.c:650
irq_exit_rcu+0x9/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:72 [inline]
RIP: 0010:acpi_safe_halt+0x40/0x50 drivers/acpi/processor_idle.c:113
Code: eb 03 83 e3 01 89 de 0f 1f 44 00 00 84 db 75 1b 0f 1f 44 00 00 eb 0c 0f 1f 44 00 00 0f 00 2d 37 ad a2 00 0f 1f 44 00 00 fb f4 5b c3 cc 0f 1f 00 66 0f 1f 84 00 00 00 00 00 55 48 89 fd 53 0f
RSP: 0018:ffffc90000177d18 EFLAGS: 00000246
RAX: ffff888016279dc0 RBX: 0000000000000000 RCX: ffffffff8a0f5735
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8880142cd064 R08: 0000000000000001 R09: ffff8880b9936ceb
R10: ffffed1017326d9d R11: 0000000000000000 R12: 0000000000000001
R13: ffff8880142cd000 R14: ffff8880142cd064 R15: 0000000000000000
acpi_idle_do_entry+0x53/0x70 drivers/acpi/processor_idle.c:573
acpi_idle_enter+0x173/0x290 drivers/acpi/processor_idle.c:711
cpuidle_enter_state+0xd3/0x6f0 drivers/cpuidle/cpuidle.c:267
cpuidle_enter+0x4e/0xa0 drivers/cpuidle/cpuidle.c:388
cpuidle_idle_call kernel/sched/idle.c:215 [inline]
do_idle+0x2fe/0x3c0 kernel/sched/idle.c:282
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:379
start_secondary+0x221/0x2b0 arch/x86/kernel/smpboot.c:269
secondary_startup_64_no_verify+0xf4/0xfb
Allocated by task 2:
kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
__kasan_slab_alloc+0x7f/0x90 mm/kasan/common.c:328
kasan_slab_alloc include/linux/kasan.h:186 [inline]
slab_post_alloc_hook mm/slab.h:711 [inline]
slab_alloc_node mm/slub.c:3451 [inline]
kmem_cache_alloc_node+0x185/0x3e0 mm/slub.c:3496
alloc_task_struct_node kernel/fork.c:173 [inline]
dup_task_struct kernel/fork.c:1108 [inline]
copy_process+0x3c0/0x7600 kernel/fork.c:2333
kernel_clone+0xeb/0x890 kernel/fork.c:2918
kernel_thread+0xc0/0x100 kernel/fork.c:2980
create_kthread kernel/kthread.c:402 [inline]
kthreadd+0x50c/0x790 kernel/kthread.c:737
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Freed by task 0:
kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
kasan_save_free_info+0x2e/0x40 mm/kasan/generic.c:521
____kasan_slab_free mm/kasan/common.c:236 [inline]
____kasan_slab_free+0x160/0x1c0 mm/kasan/common.c:200
kasan_slab_free include/linux/kasan.h:162 [inline]
slab_free_hook mm/slub.c:1781 [inline]
slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1807
slab_free mm/slub.c:3786 [inline]
kmem_cache_free+0xe9/0x480 mm/slub.c:3808
put_task_struct include/linux/sched/task.h:126 [inline]
delayed_put_task_struct+0x1f5/0x280 kernel/exit.c:226
rcu_do_batch kernel/rcu/tree.c:2115 [inline]
rcu_core+0x806/0x1ad0 kernel/rcu/tree.c:2377
__do_softirq+0x1d4/0x905 kernel/softirq.c:571
Last potentially related work creation:
kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
__kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:491
__call_rcu_common.constprop.0+0x99/0x7e0 kernel/rcu/tree.c:2627
put_task_struct_rcu_user+0x87/0xc0 kernel/exit.c:232
context_switch kernel/sched/core.c:5346 [inline]
__schedule+0xca2/0x5880 kernel/sched/core.c:6669
schedule_idle+0x5b/0x80 kernel/sched/core.c:6773
do_idle+0x273/0x3c0 kernel/sched/idle.c:310
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:379
rest_init+0x16f/0x2b0 init/main.c:735
arch_call_rest_init+0x13/0x30 init/main.c:834
start_kernel+0x3b6/0x490 init/main.c:1088
x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:556
x86_64_start_kernel+0xb3/0xc0 arch/x86/kernel/head64.c:537
secondary_startup_64_no_verify+0xf4/0xfb
Second to last potentially related work creation:
kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
__kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:491
__call_rcu_common.constprop.0+0x99/0x7e0 kernel/rcu/tree.c:2627
put_task_struct_rcu_user+0x87/0xc0 kernel/exit.c:232
release_task+0xcc8/0x1870 kernel/exit.c:282
wait_task_zombie kernel/exit.c:1207 [inline]
wait_consider_task+0x306d/0x3ce0 kernel/exit.c:1434
do_wait_thread kernel/exit.c:1497 [inline]
do_wait+0x799/0xc30 kernel/exit.c:1614
kernel_wait4+0x150/0x260 kernel/exit.c:1777
__do_sys_wait4+0x13f/0x150 kernel/exit.c:1805
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
The buggy address belongs to the object at ffff88801578d940
which belongs to the cache task_struct of size 7360
The buggy address is located 2560 bytes inside of
freed 7360-byte region [ffff88801578d940, ffff88801578f600)
The buggy address belongs to the physical page:
page:ffffea000055e200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x15788
head:ffffea000055e200 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
ksm flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000010200 ffff888140006500 ffffea0000904a00 dead000000000003
raw: 0000000000000000 0000000080040004 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 2, tgid 2 (kthreadd), ts 4845789470, free_ts 0
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x2db/0x350 mm/page_alloc.c:1731
prep_new_page mm/page_alloc.c:1738 [inline]
get_page_from_freelist+0xf41/0x2c00 mm/page_alloc.c:3502
__alloc_pages+0x1cb/0x4a0 mm/page_alloc.c:4768
alloc_pages+0x1aa/0x270 mm/mempolicy.c:2279
alloc_slab_page mm/slub.c:1851 [inline]
allocate_slab+0x25f/0x390 mm/slub.c:1998
new_slab mm/slub.c:2051 [inline]
___slab_alloc+0xa91/0x1400 mm/slub.c:3192
__slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3291
__slab_alloc_node mm/slub.c:3344 [inline]
slab_alloc_node mm/slub.c:3441 [inline]
kmem_cache_alloc_node+0x138/0x3e0 mm/slub.c:3496
alloc_task_struct_node kernel/fork.c:173 [inline]
dup_task_struct kernel/fork.c:1108 [inline]
copy_process+0x3c0/0x7600 kernel/fork.c:2333
kernel_clone+0xeb/0x890 kernel/fork.c:2918
kernel_thread+0xc0/0x100 kernel/fork.c:2980
create_kthread kernel/kthread.c:402 [inline]
kthreadd+0x50c/0x790 kernel/kthread.c:737
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
page_owner free stack trace missing
Memory state around the buggy address:
ffff88801578e200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88801578e280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88801578e300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88801578e380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88801578e400: 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: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
c: 84 db test %bl,%bl
e: 75 1b jne 0x2b
10: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
15: eb 0c jmp 0x23
17: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
1c: 0f 00 2d 37 ad a2 00 verw 0xa2ad37(%rip) # 0xa2ad5a
23: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
28: fb sti
29: f4 hlt
* 2a: fa cli <-- trapping instruction
2b: 5b pop %rbx
2c: c3 retq
2d: cc int3
2e: 0f 1f 00 nopl (%rax)
31: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1)
38: 00 00
3a: 55 push %rbp
3b: 48 89 fd mov %rdi,%rbp
3e: 53 push %rbx
3f: 0f .byte 0xf