==================================================================
BUG: KASAN: slab-use-after-free in __lock_acquire+0x77/0x1fd0 kernel/locking/lockdep.c:5005
Read of size 8 at addr ffff888016bae338 by task swapper/1/0
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.7.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:364 [inline]
print_report+0x163/0x540 mm/kasan/report.c:475
kasan_report+0x142/0x170 mm/kasan/report.c:588
__lock_acquire+0x77/0x1fd0 kernel/locking/lockdep.c:5005
lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:518 [inline]
try_to_wake_up+0xb5/0x1440 kernel/sched/core.c:4226
call_timer_fn+0x17a/0x5f0 kernel/time/timer.c:1700
expire_timers kernel/time/timer.c:1751 [inline]
__run_timers+0x64f/0x860 kernel/time/timer.c:2022
run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2035
__do_softirq+0x2b8/0x939 kernel/softirq.c:553
invoke_softirq kernel/softirq.c:427 [inline]
__irq_exit_rcu+0xf1/0x1b0 kernel/softirq.c:632
irq_exit_rcu+0x9/0x20 kernel/softirq.c:644
sysvec_apic_timer_interrupt+0x97/0xb0 arch/x86/kernel/apic/apic.c:1076
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
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+0x20/0x30 drivers/acpi/processor_idle.c:113
Code: 7f 04 eb 36 66 0f 1f 44 00 00 65 48 8b 05 68 18 ec 74 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d f6 ba af 00 f3 0f 1e fa fb f4 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 89 fa ec 48 8b 05
RSP: 0018:ffffc90000187d08 EFLAGS: 00000246
RAX: ffff888017a5bb80 RBX: ffff888148258864 RCX: 0000000000095481
RDX: 0000000000000001 RSI: ffff888148258800 RDI: ffff888148258864
RBP: 0000000000038e38 R08: ffff8880b9936c0b R09: 1ffff11017326d81
R10: dffffc0000000000 R11: ffffed1017326d82 R12: ffff888140a9e000
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8e07e0e0
acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:707
cpuidle_enter_state+0x114/0x480 drivers/cpuidle/cpuidle.c:267
cpuidle_enter+0x5d/0x90 drivers/cpuidle/cpuidle.c:388
call_cpuidle kernel/sched/idle.c:134 [inline]
cpuidle_idle_call kernel/sched/idle.c:215 [inline]
do_idle+0x374/0x5d0 kernel/sched/idle.c:282
cpu_startup_entry+0x41/0x60 kernel/sched/idle.c:380
start_secondary+0xee/0xf0 arch/x86/kernel/smpboot.c:336
secondary_startup_64_no_verify+0x167/0x16b
Allocated by task 2:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
__kasan_slab_alloc+0x66/0x70 mm/kasan/common.c:328
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook+0x6c/0x3c0 mm/slab.h:763
slab_alloc_node mm/slub.c:3478 [inline]
kmem_cache_alloc_node+0x1dd/0x310 mm/slub.c:3523
alloc_task_struct_node kernel/fork.c:173 [inline]
dup_task_struct+0x57/0x7d0 kernel/fork.c:1110
copy_process+0x5d1/0x3fb0 kernel/fork.c:2332
kernel_clone+0x222/0x840 kernel/fork.c:2907
kernel_thread+0x1bc/0x230 kernel/fork.c:2969
create_kthread kernel/kthread.c:411 [inline]
kthreadd+0x60c/0x810 kernel/kthread.c:764
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Freed by task 21171:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
kasan_save_free_info+0x28/0x40 mm/kasan/generic.c:522
____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
kasan_slab_free include/linux/kasan.h:164 [inline]
slab_free_hook mm/slub.c:1800 [inline]
slab_free_freelist_hook mm/slub.c:1826 [inline]
slab_free mm/slub.c:3809 [inline]
kmem_cache_free+0x299/0x470 mm/slub.c:3831
put_task_struct include/linux/sched/task.h:136 [inline]
delayed_put_task_struct+0x115/0x2c0 kernel/exit.c:227
rcu_do_batch kernel/rcu/tree.c:2158 [inline]
rcu_core+0xad8/0x17c0 kernel/rcu/tree.c:2431
__do_softirq+0x2b8/0x939 kernel/softirq.c:553
Last potentially related work creation:
kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xad/0xc0 mm/kasan/generic.c:492
__call_rcu_common kernel/rcu/tree.c:2681 [inline]
call_rcu+0x167/0xa80 kernel/rcu/tree.c:2795
context_switch kernel/sched/core.c:5379 [inline]
__schedule+0x1969/0x4ab0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
worker_thread+0xc26/0x1000 kernel/workqueue.c:2796
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Second to last potentially related work creation:
kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xad/0xc0 mm/kasan/generic.c:492
__call_rcu_common kernel/rcu/tree.c:2681 [inline]
call_rcu+0x167/0xa80 kernel/rcu/tree.c:2795
release_task+0x16d2/0x1810
wait_task_zombie kernel/exit.c:1184 [inline]
wait_consider_task+0x1a94/0x2ef0 kernel/exit.c:1411
do_wait_thread kernel/exit.c:1474 [inline]
__do_wait+0x1af/0x840 kernel/exit.c:1592
do_wait+0x1d8/0x540 kernel/exit.c:1626
kernel_wait4+0x2a2/0x3e0 kernel/exit.c:1785
__do_sys_wait4 kernel/exit.c:1813 [inline]
__se_sys_wait4 kernel/exit.c:1809 [inline]
__x64_sys_wait4+0x134/0x1e0 kernel/exit.c:1809
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
The buggy address belongs to the object at ffff888016bad940
which belongs to the cache task_struct of size 7360
The buggy address is located 2552 bytes inside of
freed 7360-byte region [ffff888016bad940, ffff888016baf600)
The buggy address belongs to the physical page:
page:ffffea00005aea00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x16ba8
head:ffffea00005aea00 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff8880223bf901
flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000840 ffff888014e51500 ffffea0001c98000 dead000000000002
raw: 0000000000000000 0000000000040004 00000001ffffffff ffff8880223bf901
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 5578052409, free_ts 0
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1537
prep_new_page mm/page_alloc.c:1544 [inline]
get_page_from_freelist+0x33ea/0x3570 mm/page_alloc.c:3312
__alloc_pages+0x255/0x680 mm/page_alloc.c:4568
alloc_pages_mpol+0x3de/0x640 mm/mempolicy.c:2133
alloc_slab_page+0x6a/0x170 mm/slub.c:1870
allocate_slab mm/slub.c:2017 [inline]
new_slab+0x84/0x2f0 mm/slub.c:2070
___slab_alloc+0xc8a/0x1330 mm/slub.c:3223
__slab_alloc mm/slub.c:3322 [inline]
__slab_alloc_node mm/slub.c:3375 [inline]
slab_alloc_node mm/slub.c:3468 [inline]
kmem_cache_alloc_node+0x22b/0x310 mm/slub.c:3523
alloc_task_struct_node kernel/fork.c:173 [inline]
dup_task_struct+0x57/0x7d0 kernel/fork.c:1110
copy_process+0x5d1/0x3fb0 kernel/fork.c:2332
kernel_clone+0x222/0x840 kernel/fork.c:2907
kernel_thread+0x1bc/0x230 kernel/fork.c:2969
create_kthread kernel/kthread.c:411 [inline]
kthreadd+0x60c/0x810 kernel/kthread.c:764
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
page_owner free stack trace missing
Memory state around the buggy address:
ffff888016bae200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888016bae280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888016bae300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888016bae380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888016bae400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
0: 7f 04 jg 0x6
2: eb 36 jmp 0x3a
4: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
a: 65 48 8b 05 68 18 ec mov %gs:0x74ec1868(%rip),%rax # 0x74ec187a
11: 74
12: 48 f7 00 08 00 00 00 testq $0x8,(%rax)
19: 75 10 jne 0x2b
1b: 66 90 xchg %ax,%ax
1d: 0f 00 2d f6 ba af 00 verw 0xafbaf6(%rip) # 0xafbb1a
24: f3 0f 1e fa endbr64
28: fb sti
29: f4 hlt
* 2a: fa cli <-- trapping instruction
2b: c3 ret
2c: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
33: 00 00 00
36: 0f 1f 40 00 nopl 0x0(%rax)
3a: 89 fa mov %edi,%edx
3c: ec in (%dx),%al
3d: 48 rex.W
3e: 8b .byte 0x8b
3f: 05 .byte 0x5