==================================================================
BUG: KASAN: slab-use-after-free in __lock_acquire+0x2d85/0x3b20 kernel/locking/lockdep.c:5005
Read of size 8 at addr ffff888060923818 by task swapper/3/0
CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.7.0-rc3-syzkaller-00284-g815fb87b7530 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
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+0x2d85/0x3b20 kernel/locking/lockdep.c:5005
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x50 kernel/locking/spinlock.c:162
p9_tag_remove net/9p/client.c:394 [inline]
p9_req_put net/9p/client.c:402 [inline]
p9_req_put+0xc6/0x250 net/9p/client.c:399
req_done+0x1e7/0x2e0 net/9p/trans_virtio.c:147
vring_interrupt drivers/virtio/virtio_ring.c:2595 [inline]
vring_interrupt+0x317/0x3f0 drivers/virtio/virtio_ring.c:2570
__handle_irq_event_percpu+0x22a/0x750 kernel/irq/handle.c:158
handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:210
handle_edge_irq+0x261/0xcf0 kernel/irq/chip.c:831
generic_handle_irq_desc include/linux/irqdesc.h:161 [inline]
handle_irq arch/x86/kernel/irq.c:238 [inline]
__common_interrupt+0xdb/0x240 arch/x86/kernel/irq.c:257
common_interrupt+0xab/0xd0 arch/x86/kernel/irq.c:247
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:636
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:default_idle+0xf/0x20 arch/x86/kernel/process.c:743
Code: 89 07 49 c7 c0 08 00 00 00 4d 29 c8 4c 01 c7 4c 29 c2 e9 76 ff ff ff cc cc cc cc f3 0f 1e fa 66 90 0f 00 2d e3 7a 47 00 fb f4 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 f3 0f 1e fa 65
RSP: 0018:ffffc90000397e08 EFLAGS: 00000246
RAX: 00000000004c5edd RBX: 0000000000000003 RCX: ffffffff8a7f19c7
RDX: 0000000000000000 RSI: ffffffff8acca860 RDI: ffffffff8b2ee460
RBP: ffffed1002ad9898 R08: 0000000000000001 R09: ffffed100d726dbd
R10: ffff88806b936deb R11: 0000000000000000 R12: 0000000000000003
R13: ffff8880156cc4c0 R14: ffffffff8f187050 R15: 0000000000000000
default_idle_call+0x69/0xa0 kernel/sched/idle.c:97
cpuidle_idle_call kernel/sched/idle.c:170 [inline]
do_idle+0x332/0x400 kernel/sched/idle.c:282
cpu_startup_entry+0x50/0x60 kernel/sched/idle.c:380
start_secondary+0x20e/0x2a0 arch/x86/kernel/smpboot.c:336
secondary_startup_64_no_verify+0x166/0x16b
Allocated by task 28697:
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
____kasan_kmalloc mm/kasan/common.c:374 [inline]
__kasan_kmalloc+0xa3/0xb0 mm/kasan/common.c:383
kmalloc include/linux/slab.h:600 [inline]
p9_client_create+0xcf/0x1210 net/9p/client.c:980
v9fs_session_init+0x1f8/0x1a80 fs/9p/v9fs.c:410
v9fs_mount+0xc6/0xcd0 fs/9p/vfs_super.c:123
legacy_get_tree+0x109/0x220 fs/fs_context.c:662
vfs_get_tree+0x8c/0x370 fs/super.c:1771
do_new_mount fs/namespace.c:3337 [inline]
path_mount+0x1492/0x1ed0 fs/namespace.c:3664
do_mount fs/namespace.c:3677 [inline]
__do_sys_mount fs/namespace.c:3886 [inline]
__se_sys_mount fs/namespace.c:3863 [inline]
__x64_sys_mount+0x293/0x310 fs/namespace.c:3863
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
Freed by task 28697:
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+0xcc/0x3d0 mm/slab.c:3564
p9_client_create+0xa14/0x1210 net/9p/client.c:1051
v9fs_session_init+0x1f8/0x1a80 fs/9p/v9fs.c:410
v9fs_mount+0xc6/0xcd0 fs/9p/vfs_super.c:123
legacy_get_tree+0x109/0x220 fs/fs_context.c:662
vfs_get_tree+0x8c/0x370 fs/super.c:1771
do_new_mount fs/namespace.c:3337 [inline]
path_mount+0x1492/0x1ed0 fs/namespace.c:3664
do_mount fs/namespace.c:3677 [inline]
__do_sys_mount fs/namespace.c:3886 [inline]
__se_sys_mount fs/namespace.c:3863 [inline]
__x64_sys_mount+0x293/0x310 fs/namespace.c:3863
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
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
insert_work+0x38/0x230 kernel/workqueue.c:1647
__queue_work+0x62e/0x11f0 kernel/workqueue.c:1799
queue_work_on+0xed/0x110 kernel/workqueue.c:1834
queue_work include/linux/workqueue.h:562 [inline]
xlog_cil_push_now.isra.0+0x1a0/0x200 fs/xfs/xfs_log_cil.c:1490
xlog_cil_force_seq+0x1e3/0x940 fs/xfs/xfs_log_cil.c:1668
xfs_log_force_seq+0x1fe/0x620 fs/xfs/xfs_log.c:3372
xfs_log_force_inode+0x127/0x160 fs/xfs/xfs_inode.c:3480
xfs_file_remap_range+0x849/0xcf0 fs/xfs/xfs_file.c:1218
do_clone_file_range+0x2b3/0x860 fs/remap_range.c:396
vfs_clone_file_range+0xbe/0x5b0 fs/remap_range.c:414
ioctl_file_clone fs/ioctl.c:240 [inline]
ioctl_file_clone_range fs/ioctl.c:259 [inline]
do_vfs_ioctl+0x93d/0x1920 fs/ioctl.c:824
__do_sys_ioctl fs/ioctl.c:869 [inline]
__se_sys_ioctl fs/ioctl.c:857 [inline]
__x64_sys_ioctl+0x112/0x210 fs/ioctl.c:857
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
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/0x7a0 kernel/rcu/tree.c:2681
pwq_release_workfn+0x244/0x380 kernel/workqueue.c:4138
kthread_worker_fn+0x301/0xad0 kernel/kthread.c:841
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
The buggy address belongs to the object at ffff888060923800
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 24 bytes inside of
freed 512-byte region [ffff888060923800, ffff888060923a00)
The buggy address belongs to the physical page:
page:ffffea00018248c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x60923
flags: 0xfff00000000800(slab|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0x4()
raw: 00fff00000000800 ffff888013040600 ffffea0000b1dd10 ffffea00008383d0
raw: 0000000000000000 ffff888060923000 0000000100000004 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2420c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_COMP|__GFP_THISNODE), pid 25732, tgid 25728 (syz-executor.0), ts 589702866750, free_ts 589369230570
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x2d0/0x350 mm/page_alloc.c:1537
prep_new_page mm/page_alloc.c:1544 [inline]
get_page_from_freelist+0xa25/0x36d0 mm/page_alloc.c:3312
__alloc_pages_slowpath mm/page_alloc.c:4102 [inline]
__alloc_pages+0x686/0x2420 mm/page_alloc.c:4581
__alloc_pages_node include/linux/gfp.h:238 [inline]
kmem_getpages mm/slab.c:1356 [inline]
cache_grow_begin+0x99/0x3a0 mm/slab.c:2550
cache_alloc_refill+0x295/0x3b0 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+0x3ba/0x460 mm/slab.c:3521
__do_kmalloc_node mm/slab_common.c:1006 [inline]
__kmalloc+0x49/0x90 mm/slab_common.c:1020
kmalloc include/linux/slab.h:604 [inline]
kzalloc include/linux/slab.h:721 [inline]
copy_splice_read+0x1ac/0x8f0 fs/splice.c:338
vfs_splice_read fs/splice.c:992 [inline]
vfs_splice_read+0x2ea/0x3b0 fs/splice.c:962
splice_direct_to_actor+0x2a5/0xa30 fs/splice.c:1069
do_splice_direct+0x1af/0x280 fs/splice.c:1194
do_sendfile+0xb3e/0x1310 fs/read_write.c:1254
__do_sys_sendfile64 fs/read_write.c:1322 [inline]
__se_sys_sendfile64 fs/read_write.c:1308 [inline]
__x64_sys_sendfile64+0x1d6/0x220 fs/read_write.c:1308
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x40/0x110 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:1137 [inline]
free_unref_page_prepare+0x4fa/0xaa0 mm/page_alloc.c:2347
free_unref_page+0x33/0x3b0 mm/page_alloc.c:2487
__folio_put_small mm/swap.c:106 [inline]
__folio_put+0xc3/0x110 mm/swap.c:129
folio_put include/linux/mm.h:1483 [inline]
put_page include/linux/mm.h:1552 [inline]
free_page_and_swap_cache+0x25a/0x2d0 mm/swap_state.c:304
__tlb_remove_table arch/x86/include/asm/tlb.h:34 [inline]
__tlb_remove_table_free mm/mmu_gather.c:154 [inline]
tlb_remove_table_rcu+0x89/0xe0 mm/mmu_gather.c:209
rcu_do_batch kernel/rcu/tree.c:2158 [inline]
rcu_core+0x819/0x1680 kernel/rcu/tree.c:2431
__do_softirq+0x21a/0x8de kernel/softirq.c:553
Memory state around the buggy address:
ffff888060923700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff888060923780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888060923800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888060923880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888060923900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
0: 89 07 mov %eax,(%rdi)
2: 49 c7 c0 08 00 00 00 mov $0x8,%r8
9: 4d 29 c8 sub %r9,%r8
c: 4c 01 c7 add %r8,%rdi
f: 4c 29 c2 sub %r8,%rdx
12: e9 76 ff ff ff jmp 0xffffff8d
17: cc int3
18: cc int3
19: cc int3
1a: cc int3
1b: f3 0f 1e fa endbr64
1f: 66 90 xchg %ax,%ax
21: 0f 00 2d e3 7a 47 00 verw 0x477ae3(%rip) # 0x477b0b
28: fb sti
29: f4 hlt
* 2a: fa cli <-- trapping instruction
2b: c3 ret
2c: 66 66 2e 0f 1f 84 00 data16 cs nopw 0x0(%rax,%rax,1)
33: 00 00 00 00
37: 0f 1f 40 00 nopl 0x0(%rax)
3b: f3 0f 1e fa endbr64
3f: 65 gs