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BUG: KASAN: slab-out-of-bounds in selinux_sock security/selinux/include/objsec.h:207 [inline]
BUG: KASAN: slab-out-of-bounds in selinux_ip_output+0x1e0/0x1f0 security/selinux/hooks.c:5761
Read of size 8 at addr ffff88803544a498 by task kworker/u32:0/11
CPU: 2 UID: 0 PID: 11 Comm: kworker/u32:0 Not tainted 6.12.0-syzkaller-09073-g9f16d5e6f220 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: krdsd rds_tcp_accept_worker
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:378 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:489
kasan_report+0xd9/0x110 mm/kasan/report.c:602
selinux_sock security/selinux/include/objsec.h:207 [inline]
selinux_ip_output+0x1e0/0x1f0 security/selinux/hooks.c:5761
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_slow+0xbb/0x200 net/netfilter/core.c:626
nf_hook+0x474/0x7d0 include/linux/netfilter.h:269
NF_HOOK include/linux/netfilter.h:312 [inline]
ip6_xmit+0xd44/0x2130 net/ipv6/ip6_output.c:366
tcp_v6_send_response+0x11d9/0x25e0 net/ipv6/tcp_ipv6.c:999
tcp_v6_send_ack net/ipv6/tcp_ipv6.c:1152 [inline]
tcp_v6_timewait_ack net/ipv6/tcp_ipv6.c:1199 [inline]
tcp_v6_rcv+0x2c9c/0x3fd0 net/ipv6/tcp_ipv6.c:1993
ip6_protocol_deliver_rcu+0x180/0x1510 net/ipv6/ip6_input.c:436
ip6_input_finish+0x14f/0x2f0 net/ipv6/ip6_input.c:481
NF_HOOK include/linux/netfilter.h:314 [inline]
NF_HOOK include/linux/netfilter.h:308 [inline]
ip6_input+0xa1/0xd0 net/ipv6/ip6_input.c:490
dst_input include/net/dst.h:460 [inline]
ip6_rcv_finish net/ipv6/ip6_input.c:79 [inline]
NF_HOOK include/linux/netfilter.h:314 [inline]
NF_HOOK include/linux/netfilter.h:308 [inline]
ipv6_rcv+0x265/0x680 net/ipv6/ip6_input.c:309
__netif_receive_skb_one_core+0x12e/0x1e0 net/core/dev.c:5672
__netif_receive_skb+0x1d/0x160 net/core/dev.c:5785
process_backlog+0x443/0x15f0 net/core/dev.c:6117
__napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:6877
napi_poll net/core/dev.c:6946 [inline]
net_rx_action+0xa94/0x1010 net/core/dev.c:7068
handle_softirqs+0x213/0x8f0 kernel/softirq.c:554
do_softirq kernel/softirq.c:455 [inline]
do_softirq+0xb2/0xf0 kernel/softirq.c:442
__local_bh_enable_ip+0x100/0x120 kernel/softirq.c:382
local_bh_enable include/linux/bottom_half.h:33 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:919 [inline]
__dev_queue_xmit+0x8b0/0x43e0 net/core/dev.c:4461
dev_queue_xmit include/linux/netdevice.h:3168 [inline]
neigh_hh_output include/net/neighbour.h:523 [inline]
neigh_output include/net/neighbour.h:537 [inline]
ip6_finish_output2+0x1801/0x2070 net/ipv6/ip6_output.c:141
__ip6_finish_output net/ipv6/ip6_output.c:215 [inline]
ip6_finish_output+0x3f9/0x1360 net/ipv6/ip6_output.c:226
NF_HOOK_COND include/linux/netfilter.h:303 [inline]
ip6_output+0x1f8/0x540 net/ipv6/ip6_output.c:247
dst_output include/net/dst.h:450 [inline]
NF_HOOK include/linux/netfilter.h:314 [inline]
NF_HOOK include/linux/netfilter.h:308 [inline]
ip6_xmit+0x1234/0x2130 net/ipv6/ip6_output.c:366
inet6_csk_xmit+0x3ce/0x740 net/ipv6/inet6_connection_sock.c:135
__tcp_transmit_skb+0x1b02/0x3df0 net/ipv4/tcp_output.c:1466
tcp_transmit_skb net/ipv4/tcp_output.c:1484 [inline]
tcp_write_xmit+0x12b1/0x8560 net/ipv4/tcp_output.c:2827
__tcp_push_pending_frames+0xaf/0x390 net/ipv4/tcp_output.c:3010
tcp_send_fin+0x154/0xc70 net/ipv4/tcp_output.c:3616
__tcp_close+0x96b/0xff0 net/ipv4/tcp.c:3130
tcp_close+0x28/0x120 net/ipv4/tcp.c:3221
inet_release+0x13c/0x280 net/ipv4/af_inet.c:435
inet6_release+0x4f/0x70 net/ipv6/af_inet6.c:487
__sock_release net/socket.c:640 [inline]
sock_release+0x8e/0x1d0 net/socket.c:668
rds_tcp_accept_one+0x357/0xd00 net/rds/tcp_listen.c:234
rds_tcp_accept_worker+0x59/0x80 net/rds/tcp.c:531
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
The buggy address belongs to the object at ffff88803544a420
which belongs to the cache tw_sock_TCPv6 of size 288
The buggy address is located 120 bytes inside of
allocated 288-byte region [ffff88803544a420, ffff88803544a540)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x3544a
head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff888051ff2901
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff888100adb7c0 dead000000000122 0000000000000000
raw: 0000000000000000 0000000080170017 00000001f5000000 ffff888051ff2901
head: 00fff00000000040 ffff888100adb7c0 dead000000000122 0000000000000000
head: 0000000000000000 0000000080170017 00000001f5000000 ffff888051ff2901
head: 00fff00000000001 ffffea0000d51281 ffffffffffffffff 0000000000000000
head: 0000000000000002 0000000000000000 00000000ffffffff 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 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 29, tgid 29 (ksoftirqd/1), ts 69727782600, free_ts 69618380688
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1556
prep_new_page mm/page_alloc.c:1564 [inline]
get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3474
__alloc_pages_noprof+0x223/0x25a0 mm/page_alloc.c:4751
alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2265
alloc_slab_page mm/slub.c:2412 [inline]
allocate_slab mm/slub.c:2578 [inline]
new_slab+0x2c9/0x410 mm/slub.c:2631
___slab_alloc+0xdac/0x1880 mm/slub.c:3818
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3908
__slab_alloc_node mm/slub.c:3961 [inline]
slab_alloc_node mm/slub.c:4122 [inline]
kmem_cache_alloc_noprof+0x2a7/0x2f0 mm/slub.c:4141
inet_twsk_alloc+0x120/0x970 net/ipv4/inet_timewait_sock.c:188
tcp_time_wait+0x5f/0xe10 net/ipv4/tcp_minisocks.c:309
tcp_rcv_state_process+0x4935/0x4c40 net/ipv4/tcp_input.c:6917
tcp_v6_do_rcv+0x492/0x1730 net/ipv6/tcp_ipv6.c:1667
tcp_v6_rcv+0x30b3/0x3fd0 net/ipv6/tcp_ipv6.c:1914
ip6_protocol_deliver_rcu+0x180/0x1510 net/ipv6/ip6_input.c:436
ip6_input_finish+0x14f/0x2f0 net/ipv6/ip6_input.c:481
NF_HOOK include/linux/netfilter.h:314 [inline]
NF_HOOK include/linux/netfilter.h:308 [inline]
ip6_input+0xa1/0xd0 net/ipv6/ip6_input.c:490
page last free pid 5960 tgid 5960 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_unref_page+0x661/0x1080 mm/page_alloc.c:2657
__put_partials+0x14c/0x170 mm/slub.c:3145
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x4e/0x120 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4085 [inline]
slab_alloc_node mm/slub.c:4134 [inline]
kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4141
getname_flags.part.0+0x4c/0x550 fs/namei.c:139
getname_flags include/linux/audit.h:322 [inline]
getname fs/namei.c:223 [inline]
__do_sys_unlink fs/namei.c:4635 [inline]
__se_sys_unlink fs/namei.c:4633 [inline]
__x64_sys_unlink+0xb0/0x110 fs/namei.c:4633
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Memory state around the buggy address:
ffff88803544a380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88803544a400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88803544a480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
^
ffff88803544a500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88803544a580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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