==================================================================
BUG: KASAN: slab-use-after-free in list_empty include/linux/list.h:373 [inline]
BUG: KASAN: slab-use-after-free in waitqueue_active include/linux/wait.h:129 [inline]
BUG: KASAN: slab-use-after-free in sock_def_write_space_wfree net/core/sock.c:3380 [inline]
BUG: KASAN: slab-use-after-free in sock_wfree+0x99f/0x9c0 net/core/sock.c:2465
Read of size 8 at addr ffff888032d4c280 by task kworker/u4:17/28163
CPU: 1 PID: 28163 Comm: kworker/u4:17 Not tainted 6.6.0-syzkaller-10135-g016b9332a334 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Workqueue: bat_events batadv_nc_worker
Call Trace:
<IRQ>
__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
list_empty include/linux/list.h:373 [inline]
waitqueue_active include/linux/wait.h:129 [inline]
sock_def_write_space_wfree net/core/sock.c:3380 [inline]
sock_wfree+0x99f/0x9c0 net/core/sock.c:2465
skb_release_head_state+0xa3/0x2b0 net/core/skbuff.c:1044
skb_release_all net/core/skbuff.c:1056 [inline]
napi_consume_skb net/core/skbuff.c:1366 [inline]
napi_consume_skb+0x119/0x2b0 net/core/skbuff.c:1344
free_old_xmit_skbs+0xf0/0x370 drivers/net/virtio_net.c:761
virtnet_poll_tx+0x268/0x630 drivers/net/virtio_net.c:2252
__napi_poll.constprop.0+0xb4/0x540 net/core/dev.c:6531
napi_poll net/core/dev.c:6600 [inline]
net_rx_action+0x956/0xe90 net/core/dev.c:6733
__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
common_interrupt+0xae/0xd0 arch/x86/kernel/irq.c:247
</IRQ>
<TASK>
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:636
RIP: 0010:lock_acquire+0x1ef/0x510 kernel/locking/lockdep.c:5721
Code: c1 05 8d 7f 99 7e 83 f8 01 0f 85 b0 02 00 00 9c 58 f6 c4 02 0f 85 9b 02 00 00 48 85 ed 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc9000346fa58 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff9200068df4d RCX: 0000000000000001
RDX: 1ffff11005fb6159 RSI: ffffffff8accbfe0 RDI: ffffffff8b2e7060
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff23dedd8
R10: ffffffff91ef6ec7 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8cfad3a0 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
rcu_read_lock include/linux/rcupdate.h:747 [inline]
batadv_nc_process_nc_paths.part.0+0xe4/0x3e0 net/batman-adv/network-coding.c:687
batadv_nc_process_nc_paths net/batman-adv/network-coding.c:679 [inline]
batadv_nc_worker+0xd4f/0x10e0 net/batman-adv/network-coding.c:728
process_one_work+0x884/0x15c0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
kthread+0x33c/0x440 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
</TASK>
Allocated by task 5490:
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/slub.c:3478 [inline]
slab_alloc mm/slub.c:3486 [inline]
__kmem_cache_alloc_lru mm/slub.c:3493 [inline]
kmem_cache_alloc_lru+0x212/0x670 mm/slub.c:3509
alloc_inode_sb include/linux/fs.h:2937 [inline]
sock_alloc_inode+0x25/0x1c0 net/socket.c:308
alloc_inode+0x5d/0x220 fs/inode.c:259
new_inode_pseudo+0x16/0x80 fs/inode.c:1004
sock_alloc+0x40/0x270 net/socket.c:634
__sock_create+0xbc/0x800 net/socket.c:1533
sock_create net/socket.c:1620 [inline]
__sys_socket_create net/socket.c:1657 [inline]
__sys_socket+0x14c/0x260 net/socket.c:1708
__do_sys_socket net/socket.c:1722 [inline]
__se_sys_socket net/socket.c:1720 [inline]
__x64_sys_socket+0x72/0xb0 net/socket.c:1720
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
Freed by task 5103:
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522
____kasan_slab_free mm/kasan/common.c:236 [inline]
____kasan_slab_free+0x15b/0x1b0 mm/kasan/common.c:200
kasan_slab_free include/linux/kasan.h:164 [inline]
slab_free_hook mm/slub.c:1800 [inline]
slab_free_freelist_hook+0x114/0x1e0 mm/slub.c:1826
slab_free mm/slub.c:3809 [inline]
kmem_cache_free+0xf0/0x470 mm/slub.c:3831
i_callback+0x43/0x70 fs/inode.c:248
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+0xbc/0xd0 mm/kasan/generic.c:492
__call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2667
destroy_inode+0x129/0x1b0 fs/inode.c:314
iput_final fs/inode.c:1775 [inline]
iput.part.0+0x55e/0x7a0 fs/inode.c:1801
iput+0x5c/0x80 fs/inode.c:1791
dentry_unlink_inode+0x292/0x430 fs/dcache.c:401
__dentry_kill+0x3b8/0x640 fs/dcache.c:607
dentry_kill fs/dcache.c:733 [inline]
dput+0x8b7/0xf80 fs/dcache.c:913
__fput+0x3b9/0xbb0 fs/file_table.c:402
__fput_sync+0x47/0x50 fs/file_table.c:475
__do_sys_close fs/open.c:1590 [inline]
__se_sys_close fs/open.c:1575 [inline]
__x64_sys_close+0x87/0xf0 fs/open.c:1575
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
Second to last potentially related work creation:
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
__kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492
__call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2667
destroy_inode+0x129/0x1b0 fs/inode.c:314
iput_final fs/inode.c:1775 [inline]
iput.part.0+0x55e/0x7a0 fs/inode.c:1801
iput+0x5c/0x80 fs/inode.c:1791
dentry_unlink_inode+0x292/0x430 fs/dcache.c:401
__dentry_kill+0x3b8/0x640 fs/dcache.c:607
dentry_kill fs/dcache.c:733 [inline]
dput+0x8b7/0xf80 fs/dcache.c:913
__fput+0x3b9/0xbb0 fs/file_table.c:402
__fput_sync+0x47/0x50 fs/file_table.c:475
__do_sys_close fs/open.c:1590 [inline]
__se_sys_close fs/open.c:1575 [inline]
__x64_sys_close+0x87/0xf0 fs/open.c:1575
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
The buggy address belongs to the object at ffff888032d4c200
which belongs to the cache sock_inode_cache of size 1408
The buggy address is located 128 bytes inside of
freed 1408-byte region [ffff888032d4c200, ffff888032d4c780)
The buggy address belongs to the physical page:
page:ffffea0000cb5200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x32d48
head:ffffea0000cb5200 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff88802767c101
anon flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000840 ffff888018a6bb40 0000000000000000 dead000000000001
raw: 0000000000000000 0000000000150015 00000001ffffffff ffff88802767c101
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Reclaimable, gfp_mask 0x1d20d0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 23133, tgid 23131 (syz-executor.1), ts 885698082276, free_ts 868568007232
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+0x1a9/0x270 mm/mempolicy.c:2303
alloc_slab_page mm/slub.c:1870 [inline]
allocate_slab+0x251/0x380 mm/slub.c:2017
new_slab mm/slub.c:2070 [inline]
___slab_alloc+0x8c7/0x1580 mm/slub.c:3223
__slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3322
__slab_alloc_node mm/slub.c:3375 [inline]
slab_alloc_node mm/slub.c:3468 [inline]
slab_alloc mm/slub.c:3486 [inline]
__kmem_cache_alloc_lru mm/slub.c:3493 [inline]
kmem_cache_alloc_lru+0x4de/0x670 mm/slub.c:3509
alloc_inode_sb include/linux/fs.h:2937 [inline]
sock_alloc_inode+0x25/0x1c0 net/socket.c:308
alloc_inode+0x5d/0x220 fs/inode.c:259
new_inode_pseudo+0x16/0x80 fs/inode.c:1004
sock_alloc+0x40/0x270 net/socket.c:634
__sock_create+0xbc/0x800 net/socket.c:1533
afs_open_socket+0xe4/0x370 fs/afs/rxrpc.c:46
afs_net_init+0x98a/0xc80 fs/afs/main.c:124
ops_init+0xb9/0x650 net/core/net_namespace.c:136
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
qlink_free mm/kasan/quarantine.c:166 [inline]
qlist_free_all+0x6a/0x170 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/slub.c:3478 [inline]
slab_alloc mm/slub.c:3486 [inline]
__kmem_cache_alloc_lru mm/slub.c:3493 [inline]
kmem_cache_alloc+0x15d/0x3a0 mm/slub.c:3502
kmem_cache_zalloc include/linux/slab.h:711 [inline]
jbd2_alloc_handle include/linux/jbd2.h:1592 [inline]
new_handle fs/jbd2/transaction.c:476 [inline]
jbd2__journal_start+0x190/0x690 fs/jbd2/transaction.c:503
__ext4_journal_start_sb+0x40f/0x5c0 fs/ext4/ext4_jbd2.c:112
__ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline]
ext4_evict_inode+0x5c8/0x1a30 fs/ext4/inode.c:223
evict+0x2ed/0x6b0 fs/inode.c:664
iput_final fs/inode.c:1775 [inline]
iput.part.0+0x55e/0x7a0 fs/inode.c:1801
iput+0x5c/0x80 fs/inode.c:1791
d_delete_notify include/linux/fsnotify.h:262 [inline]
vfs_rmdir fs/namei.c:4202 [inline]
vfs_rmdir+0x454/0x650 fs/namei.c:4166
do_rmdir+0x39e/0x410 fs/namei.c:4248
__do_sys_unlinkat fs/namei.c:4424 [inline]
__se_sys_unlinkat fs/namei.c:4418 [inline]
__x64_sys_unlinkat+0xef/0x130 fs/namei.c:4418
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82
Memory state around the buggy address:
ffff888032d4c180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff888032d4c200: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888032d4c280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888032d4c300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888032d4c380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
0: c1 05 8d 7f 99 7e 83 roll $0x83,0x7e997f8d(%rip) # 0x7e997f94
7: f8 clc
8: 01 0f add %ecx,(%rdi)
a: 85 b0 02 00 00 9c test %esi,-0x63fffffe(%rax)
10: 58 pop %rax
11: f6 c4 02 test $0x2,%ah
14: 0f 85 9b 02 00 00 jne 0x2b5
1a: 48 85 ed test %rbp,%rbp
1d: 74 01 je 0x20
1f: fb sti
20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
27: fc ff df
* 2a: 48 01 c3 add %rax,%rbx <-- trapping instruction
2d: 48 c7 03 00 00 00 00 movq $0x0,(%rbx)
34: 48 c7 43 08 00 00 00 movq $0x0,0x8(%rbx)
3b: 00
3c: 48 rex.W
3d: 8b .byte 0x8b
3e: 84 .byte 0x84
3f: 24 .byte 0x24