==================================================================
BUG: KASAN: slab-use-after-free in __lock_acquire+0x4208/0x5de0 kernel/locking/lockdep.c:5004
Read of size 8 at addr ffff88802b180b88 by task syz-executor115/6007
CPU: 1 PID: 6007 Comm: syz-executor115 Not tainted 6.6.0-syzkaller-10265-gbabe393974de #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:364 [inline]
print_report+0xc4/0x620 mm/kasan/report.c:475
kasan_report+0xda/0x110 mm/kasan/report.c:588
__lock_acquire+0x4208/0x5de0 kernel/locking/lockdep.c:5004
lock_acquire kernel/locking/lockdep.c:5753 [inline]
lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5718
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x50 kernel/locking/spinlock.c:162
class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:518 [inline]
try_to_wake_up+0xb0/0x15d0 kernel/sched/core.c:4226
call_timer_fn+0x193/0x580 kernel/time/timer.c:1700
expire_timers kernel/time/timer.c:1751 [inline]
__run_timers+0x764/0xb10 kernel/time/timer.c:2022
run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035
__do_softirq+0x21a/0x968 kernel/softirq.c:553
invoke_softirq kernel/softirq.c:427 [inline]
__irq_exit_rcu kernel/softirq.c:632 [inline]
irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1076
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:220 [inline]
RIP: 0010:unwind_next_frame+0x2d4/0x2390 arch/x86/kernel/unwind_orc.c:494
Code: 03 38 d0 7c 09 84 d2 74 05 e8 18 b5 a2 00 44 8b 74 24 28 42 8b 04 ad 54 d9 50 90 4b 8d 14 76 4c 8d ac 12 64 1e 9c 8f 83 c0 01 <49> 81 fd 54 d9 50 90 89 44 24 34 0f 83 0a 0a 00 00 e8 46 f3 4c 00
RSP: 0018:ffffc900052b7210 EFLAGS: 00000202
RAX: 000000000002ad94 RBX: ffffc900052b7290 RCX: ffffffff813a8861
RDX: 000000000008088f RSI: ffffffff813a886f RDI: ffffffff9053d638
RBP: 0000000000000001 R08: 0000000000000004 R09: 000000000000bf38
R10: 000000000009c000 R11: dffffc0000000000 R12: ffffffff81bf387f
R13: ffffffff8fac2f82 R14: 000000000002ad85 R15: ffffc900052b72c5
arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122
save_stack+0x160/0x1f0 mm/page_owner.c:128
__set_page_owner+0x1f/0x60 mm/page_owner.c:192
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x2cf/0x340 mm/page_alloc.c:1536
prep_new_page mm/page_alloc.c:1543 [inline]
get_page_from_freelist+0xee0/0x2f20 mm/page_alloc.c:3170
__alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4426
__folio_alloc+0x16/0x40 mm/page_alloc.c:4458
vma_alloc_folio+0x156/0x890 mm/mempolicy.c:2264
shmem_alloc_folio+0xb5/0x170 mm/shmem.c:1658
shmem_alloc_and_acct_folio+0xcb/0x140 mm/shmem.c:1683
shmem_get_folio_gfp+0xbe9/0x1890 mm/shmem.c:2020
shmem_get_folio mm/shmem.c:2143 [inline]
shmem_write_begin+0x15c/0x460 mm/shmem.c:2688
generic_perform_write+0x278/0x600 mm/filemap.c:3969
shmem_file_write_iter+0x110/0x140 mm/shmem.c:2865
call_write_iter include/linux/fs.h:2020 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x64f/0xdf0 fs/read_write.c:584
ksys_write+0x12f/0x250 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f59a9f3e360
Code: 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 80 3d 41 ad 07 00 00 74 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 48 89
RSP: 002b:00007ffd4d32be28 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f59a9f3e360
RDX: 0000000000200000 RSI: 00007f59a1b00000 RDI: 0000000000000003
RBP: 00007f59a1b00000 R08: 0000000000000eaf R09: 0000000000000eab
R10: 0000000020000f82 R11: 0000000000000202 R12: 00007ffd4d32be70
R13: 00007ffd4d32beb0 R14: 0000000000200000 R15: 0000000000000003
Allocated by task 2:
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
__kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:328
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook mm/slab.h:762 [inline]
slab_alloc_node mm/slab.c:3237 [inline]
kmem_cache_alloc_node+0x173/0x540 mm/slab.c:3509
alloc_task_struct_node kernel/fork.c:173 [inline]
dup_task_struct kernel/fork.c:1110 [inline]
copy_process+0x41c/0x73f0 kernel/fork.c:2332
kernel_clone+0xfd/0x920 kernel/fork.c:2914
kernel_thread+0xc0/0x100 kernel/fork.c:2976
create_kthread kernel/kthread.c:411 [inline]
kthreadd+0x4fb/0x7d0 kernel/kthread.c:746
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Freed by task 5068:
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
kasan_save_free_info+0x28/0x40 mm/kasan/generic.c:522
____kasan_slab_free mm/kasan/common.c:236 [inline]
____kasan_slab_free+0x138/0x190 mm/kasan/common.c:200
kasan_slab_free include/linux/kasan.h:164 [inline]
__cache_free mm/slab.c:3370 [inline]
__do_kmem_cache_free mm/slab.c:3557 [inline]
kmem_cache_free+0x104/0x380 mm/slab.c:3582
put_task_struct include/linux/sched/task.h:136 [inline]
put_task_struct include/linux/sched/task.h:123 [inline]
delayed_put_task_struct+0x21b/0x2b0 kernel/exit.c:228
rcu_do_batch kernel/rcu/tree.c:2153 [inline]
rcu_core+0x830/0x1c50 kernel/rcu/tree.c:2417
__do_softirq+0x21a/0x968 kernel/softirq.c:553
Last potentially related work creation:
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
__kasan_record_aux_stack+0x78/0x80 mm/kasan/generic.c:492
__call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2667
put_task_struct_rcu_user kernel/exit.c:234 [inline]
put_task_struct_rcu_user+0x87/0xc0 kernel/exit.c:231
context_switch kernel/sched/core.c:5379 [inline]
__schedule+0xeea/0x59a0 kernel/sched/core.c:6688
preempt_schedule_irq+0x52/0x90 kernel/sched/core.c:7008
irqentry_exit+0x35/0x80 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
Second to last potentially related work creation:
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
__kasan_record_aux_stack+0x78/0x80 mm/kasan/generic.c:492
__call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2667
put_task_struct_rcu_user kernel/exit.c:234 [inline]
put_task_struct_rcu_user+0x87/0xc0 kernel/exit.c:231
context_switch kernel/sched/core.c:5379 [inline]
__schedule+0xeea/0x59a0 kernel/sched/core.c:6688
preempt_schedule_irq+0x52/0x90 kernel/sched/core.c:7008
irqentry_exit+0x35/0x80 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
The buggy address belongs to the object at ffff88802b180180
which belongs to the cache task_struct of size 7360
The buggy address is located 2568 bytes inside of
freed 7360-byte region [ffff88802b180180, ffff88802b181e40)
The buggy address belongs to the physical page:
page:ffffea0000ac6000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2b180
head:ffffea0000ac6000 order:1 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0x1()
raw: 00fff00000000840 ffff888140051500 ffffea0000807810 ffffea000080e190
raw: 0000000000000000 ffff88802b180180 0000000100000001 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 1, migratetype Unmovable, gfp_mask 0x2420c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_COMP|__GFP_THISNODE), pid 4805, tgid 4805 (dhcpcd-run-hook), ts 72579064960, free_ts 72353568211
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x2cf/0x340 mm/page_alloc.c:1536
prep_new_page mm/page_alloc.c:1543 [inline]
get_page_from_freelist+0xee0/0x2f20 mm/page_alloc.c:3170
__alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4426
__alloc_pages_node include/linux/gfp.h:237 [inline]
kmem_getpages mm/slab.c:1356 [inline]
cache_grow_begin+0x99/0x3a0 mm/slab.c:2550
cache_alloc_refill+0x294/0x3a0 mm/slab.c:2923
____cache_alloc mm/slab.c:2999 [inline]
____cache_alloc mm/slab.c:2982 [inline]
__do_cache_alloc mm/slab.c:3182 [inline]
slab_alloc_node mm/slab.c:3230 [inline]
kmem_cache_alloc_node+0x481/0x540 mm/slab.c:3509
alloc_task_struct_node kernel/fork.c:173 [inline]
dup_task_struct kernel/fork.c:1110 [inline]
copy_process+0x41c/0x73f0 kernel/fork.c:2332
kernel_clone+0xfd/0x920 kernel/fork.c:2914
__do_sys_clone+0xba/0x100 kernel/fork.c:3057
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1136 [inline]
free_unref_page_prepare+0x476/0xa40 mm/page_alloc.c:2312
free_unref_page+0x33/0x3b0 mm/page_alloc.c:2405
slab_destroy mm/slab.c:1608 [inline]
slabs_destroy+0x85/0xc0 mm/slab.c:1628
cache_flusharray mm/slab.c:3341 [inline]
___cache_free+0x2b7/0x420 mm/slab.c:3404
qlink_free mm/kasan/quarantine.c:166 [inline]
qlist_free_all+0x4c/0x1b0 mm/kasan/quarantine.c:185
kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:292
__kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:305
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook mm/slab.h:762 [inline]
slab_alloc_node mm/slab.c:3237 [inline]
__kmem_cache_alloc_node+0x163/0x470 mm/slab.c:3521
kmalloc_trace+0x25/0xe0 mm/slab_common.c:1098
kmalloc include/linux/slab.h:600 [inline]
tomoyo_print_header security/tomoyo/audit.c:156 [inline]
tomoyo_init_log+0x1a0/0x2110 security/tomoyo/audit.c:255
tomoyo_supervisor+0x30c/0xea0 security/tomoyo/common.c:2089
tomoyo_audit_path_log security/tomoyo/file.c:168 [inline]
tomoyo_path_permission security/tomoyo/file.c:587 [inline]
tomoyo_path_permission+0x270/0x3b0 security/tomoyo/file.c:573
tomoyo_check_open_permission+0x371/0x3b0 security/tomoyo/file.c:777
tomoyo_file_open security/tomoyo/tomoyo.c:332 [inline]
tomoyo_file_open+0xa8/0xd0 security/tomoyo/tomoyo.c:327
security_file_open+0x6a/0xe0 security/security.c:2836
do_dentry_open+0x583/0x18d0 fs/open.c:935
Memory state around the buggy address:
ffff88802b180a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88802b180b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88802b180b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88802b180c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88802b180c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
0: 03 38 add (%rax),%edi
2: d0 7c 09 84 sarb -0x7c(%rcx,%rcx,1)
6: d2 74 05 e8 shlb %cl,-0x18(%rbp,%rax,1)
a: 18 b5 a2 00 44 8b sbb %dh,-0x74bbff5e(%rbp)
10: 74 24 je 0x36
12: 28 42 8b sub %al,-0x75(%rdx)
15: 04 ad add $0xad,%al
17: 54 push %rsp
18: d9 50 90 fsts -0x70(%rax)
1b: 4b 8d 14 76 lea (%r14,%r14,2),%rdx
1f: 4c 8d ac 12 64 1e 9c lea -0x7063e19c(%rdx,%rdx,1),%r13
26: 8f
27: 83 c0 01 add $0x1,%eax
* 2a: 49 81 fd 54 d9 50 90 cmp $0xffffffff9050d954,%r13 <-- trapping instruction
31: 89 44 24 34 mov %eax,0x34(%rsp)
35: 0f 83 0a 0a 00 00 jae 0xa45
3b: e8 46 f3 4c 00 call 0x4cf386