==================================================================
BUG: KASAN: use-after-free in list_empty include/linux/list.h:282 [inline]
BUG: KASAN: use-after-free in waitqueue_active include/linux/wait.h:128 [inline]
BUG: KASAN: use-after-free in wq_has_sleeper include/linux/wait.h:162 [inline]
BUG: KASAN: use-after-free in skwq_has_sleeper include/net/sock.h:2159 [inline]
BUG: KASAN: use-after-free in sock_def_write_space+0x6b2/0x6e0 net/core/sock.c:2919
Read of size 8 at addr ffff888067e16a80 by task systemd-udevd/4889
CPU: 1 PID: 4889 Comm: systemd-udevd Not tainted 5.10.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:79 [inline]
dump_stack+0x107/0x163 lib/dump_stack.c:120
print_address_description.constprop.0.cold+0xae/0x4c8 mm/kasan/report.c:385
__kasan_report mm/kasan/report.c:545 [inline]
kasan_report.cold+0x1f/0x37 mm/kasan/report.c:562
list_empty include/linux/list.h:282 [inline]
waitqueue_active include/linux/wait.h:128 [inline]
wq_has_sleeper include/linux/wait.h:162 [inline]
skwq_has_sleeper include/net/sock.h:2159 [inline]
sock_def_write_space+0x6b2/0x6e0 net/core/sock.c:2919
sock_wfree+0x1cc/0x240 net/core/sock.c:2052
skb_release_head_state+0x9f/0x250 net/core/skbuff.c:656
skb_release_all net/core/skbuff.c:667 [inline]
_kfree_skb_defer net/core/skbuff.c:875 [inline]
napi_consume_skb+0x222/0x4c0 net/core/skbuff.c:919
free_old_xmit_skbs+0xe4/0x270 drivers/net/virtio_net.c:1394
virtnet_poll_tx+0x1e9/0x370 drivers/net/virtio_net.c:1521
napi_poll net/core/dev.c:6787 [inline]
net_rx_action+0x483/0xf30 net/core/dev.c:6870
__do_softirq+0x2cb/0xad5 kernel/softirq.c:298
asm_call_irq_on_stack+0xf/0x20
__run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
do_softirq_own_stack+0xaa/0xd0 arch/x86/kernel/irq_64.c:77
invoke_softirq kernel/softirq.c:393 [inline]
__irq_exit_rcu kernel/softirq.c:423 [inline]
irq_exit_rcu+0x18a/0x1b0 kernel/softirq.c:435
common_interrupt+0xb2/0x220 arch/x86/kernel/irq.c:239
asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:619
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:85 [inline]
RIP: 0010:lock_acquire kernel/locking/lockdep.c:5440 [inline]
RIP: 0010:lock_acquire+0x2c7/0x780 kernel/locking/lockdep.c:5402
Code: 48 c7 c7 a0 c4 8b 89 48 83 c4 20 e8 03 07 ca 07 b8 ff ff ff ff 65 0f c1 05 f6 da a6 7e 83 f8 01 0f 85 5f 03 00 00 ff 34 24 9d 3a fe ff ff 65 ff 05 5d c9 a6 7e 48 8b 05 f6 70 a0 0c e8 41 fa
RSP: 0018:ffffc9000164fa70 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 1ffff920002c9f50 RCX: 0000000000000001
RDX: 1ffff110025654a8 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8fe6e7af
R10: fffffbfff1fcdcf5 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff8bd0a2e8 R14: 0000000000000000 R15: 0000000000000000
__mutex_lock_common kernel/locking/mutex.c:956 [inline]
__mutex_lock+0x134/0x1240 kernel/locking/mutex.c:1103
kernfs_iop_getattr+0x85/0xd0 fs/kernfs/inode.c:192
vfs_getattr_nosec+0x246/0x2e0 fs/stat.c:87
vfs_getattr fs/stat.c:124 [inline]
vfs_statx+0x18d/0x390 fs/stat.c:189
vfs_fstatat fs/stat.c:207 [inline]
vfs_lstat include/linux/fs.h:3125 [inline]
__do_sys_newlstat+0x91/0x110 fs/stat.c:362
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fbe7f747335
Code: 69 db 2b 00 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 83 ff 01 48 89 f0 77 30 48 89 c7 48 89 d6 b8 06 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 03 f3 c3 90 48 8b 15 31 db 2b 00 f7 d8 64 89
RSP: 002b:00007ffcbb188878 EFLAGS: 00000246 ORIG_RAX: 0000000000000006
RAX: ffffffffffffffda RBX: 0000557710877f10 RCX: 00007fbe7f747335
RDX: 00007ffcbb1888b0 RSI: 00007ffcbb1888b0 RDI: 0000557710876f10
RBP: 00007ffcbb188970 R08: 00007fbe7fa06258 R09: 0000000000001010
R10: 00007fbe7fa05b58 R11: 0000000000000246 R12: 0000557710876f10
R13: 0000557710876f3a R14: 0000557710865dd6 R15: 0000557710865dda
Allocated by task 29059:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
kasan_set_track mm/kasan/common.c:56 [inline]
__kasan_kmalloc.constprop.0+0xc2/0xd0 mm/kasan/common.c:461
slab_post_alloc_hook mm/slab.h:512 [inline]
slab_alloc_node mm/slub.c:2889 [inline]
slab_alloc mm/slub.c:2897 [inline]
kmem_cache_alloc+0x145/0x350 mm/slub.c:2902
sock_alloc_inode+0x18/0x1c0 net/socket.c:253
alloc_inode+0x61/0x230 fs/inode.c:234
new_inode_pseudo+0x14/0xe0 fs/inode.c:930
sock_alloc+0x3c/0x300 net/socket.c:574
__sock_create+0xbc/0x880 net/socket.c:1370
sock_create net/socket.c:1457 [inline]
__sys_socket+0xef/0x200 net/socket.c:1499
__do_sys_socket net/socket.c:1508 [inline]
__se_sys_socket net/socket.c:1506 [inline]
__x64_sys_socket+0x6f/0xb0 net/socket.c:1506
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Freed by task 4889:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
kasan_set_track+0x1c/0x30 mm/kasan/common.c:56
kasan_set_free_info+0x1b/0x30 mm/kasan/generic.c:352
__kasan_slab_free+0x102/0x140 mm/kasan/common.c:422
slab_free_hook mm/slub.c:1544 [inline]
slab_free_freelist_hook+0x5d/0x150 mm/slub.c:1577
slab_free mm/slub.c:3140 [inline]
kmem_cache_free+0x82/0x380 mm/slub.c:3156
i_callback+0x3f/0x70 fs/inode.c:223
rcu_do_batch kernel/rcu/tree.c:2489 [inline]
rcu_core+0x75d/0xf80 kernel/rcu/tree.c:2723
__do_softirq+0x2cb/0xad5 kernel/softirq.c:298
Last potentially related work creation:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
kasan_record_aux_stack+0xc0/0xf0 mm/kasan/generic.c:343
__call_rcu kernel/rcu/tree.c:2965 [inline]
call_rcu+0xbb/0x730 kernel/rcu/tree.c:3038
destroy_inode+0x12d/0x1c0 fs/inode.c:289
iput_final fs/inode.c:1654 [inline]
iput+0x537/0x8a0 fs/inode.c:1680
dentry_unlink_inode+0x2b1/0x3d0 fs/dcache.c:374
__dentry_kill+0x3c0/0x640 fs/dcache.c:579
dentry_kill fs/dcache.c:705 [inline]
dput+0x786/0xc10 fs/dcache.c:878
__fput+0x3ab/0x930 fs/file_table.c:294
task_work_run+0xdd/0x190 kernel/task_work.c:168
get_signal+0xdaf/0x2180 kernel/signal.c:2596
arch_do_signal_or_restart+0x2a8/0x1e60 arch/x86/kernel/signal.c:811
handle_signal_work kernel/entry/common.c:147 [inline]
exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
exit_to_user_mode_prepare+0x148/0x250 kernel/entry/common.c:201
__syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:302
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Second to last potentially related work creation:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
kasan_record_aux_stack+0xc0/0xf0 mm/kasan/generic.c:343
__call_rcu kernel/rcu/tree.c:2965 [inline]
call_rcu+0xbb/0x730 kernel/rcu/tree.c:3038
destroy_inode+0x12d/0x1c0 fs/inode.c:289
iput_final fs/inode.c:1654 [inline]
iput+0x537/0x8a0 fs/inode.c:1680
__sock_release net/socket.c:609 [inline]
sock_release+0x15a/0x1b0 net/socket.c:625
netlink_kernel_release+0x4b/0x60 net/netlink/af_netlink.c:2107
crypto_netlink_exit+0x34/0x70 crypto/crypto_user_base.c:492
ops_exit_list+0xb0/0x160 net/core/net_namespace.c:187
cleanup_net+0x4ea/0xb10 net/core/net_namespace.c:604
process_one_work+0x868/0x15c0 kernel/workqueue.c:2275
worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
kthread+0x3b1/0x4a0 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
The buggy address belongs to the object at ffff888067e16a00
which belongs to the cache sock_inode_cache of size 1216
The buggy address is located 128 bytes inside of
1216-byte region [ffff888067e16a00, ffff888067e16ec0)
The buggy address belongs to the page:
page:00000000068a035a refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x67e14
head:00000000068a035a order:2 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head)
raw: 00fff00000010200 0000000000000000 0000000400000001 ffff888140c47140
raw: 0000000000000000 00000000000c000c 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff888067e16980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff888067e16a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888067e16a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888067e16b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888067e16b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================