==================================================================
BUG: KASAN: use-after-free in tcp_retransmit_timer+0x6ee/0x2890 net/ipv4/tcp_timer.c:515
Read of size 8 at addr ffff88807acf1c98 by task kworker/0:11/3700
CPU: 0 PID: 3700 Comm: kworker/0:11 Not tainted 5.15.118-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Workqueue: wg-kex-wg1 wg_packet_handshake_receive_worker
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
print_address_description+0x63/0x3b0 mm/kasan/report.c:248
__kasan_report mm/kasan/report.c:434 [inline]
kasan_report+0x16b/0x1c0 mm/kasan/report.c:451
tcp_retransmit_timer+0x6ee/0x2890 net/ipv4/tcp_timer.c:515
tcp_write_timer_handler+0x1f7/0x9c0 net/ipv4/tcp_timer.c:626
tcp_write_timer+0x12e/0x280 net/ipv4/tcp_timer.c:646
call_timer_fn+0x16d/0x560 kernel/time/timer.c:1421
expire_timers kernel/time/timer.c:1466 [inline]
__run_timers+0x67c/0x890 kernel/time/timer.c:1737
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1750
__do_softirq+0x3b3/0x93a kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x155/0x240 kernel/softirq.c:636
irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:_compound_head include/linux/page-flags.h:198 [inline]
RIP: 0010:virt_to_head_page include/linux/mm.h:902 [inline]
RIP: 0010:qlink_to_cache mm/kasan/quarantine.c:120 [inline]
RIP: 0010:qlist_free_all+0x5b/0x90 mm/kasan/quarantine.c:173
Code: e8 3a 04 00 00 49 89 dd 48 85 db 74 2a 4c 89 fe 4d 85 ff 75 e4 4c 89 ef e8 d2 f8 6f ff 48 c1 e8 0c 48 c1 e0 06 49 8b 4c 04 08 c1 01 75 c3 4c 01 e0 48 89 c1 eb be 49 c7 46 08 00 00 00 00 49
RSP: 0018:ffffc9000406f560 EFLAGS: 00000202
RAX: 000000000062f440 RBX: ffff888018bd1800 RCX: ffffea000062f401
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88803488f000 R08: ffffffff81395b08 R09: 00000000800c0007
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffea0000000000
R13: ffff888018bd1800 R14: ffffc9000406f590 R15: 0000000000000000
kasan_quarantine_reduce+0x162/0x180 mm/kasan/quarantine.c:283
____kasan_kmalloc+0x2f/0xf0 mm/kasan/common.c:479
kasan_kmalloc include/linux/kasan.h:264 [inline]
kmem_cache_alloc_trace+0x143/0x290 mm/slub.c:3247
kmalloc include/linux/slab.h:591 [inline]
kzalloc include/linux/slab.h:721 [inline]
keypair_create drivers/net/wireguard/noise.c:100 [inline]
wg_noise_handshake_begin_session+0xc0/0xb50 drivers/net/wireguard/noise.c:827
wg_packet_send_handshake_response+0x11c/0x2d0 drivers/net/wireguard/send.c:96
wg_receive_handshake_packet drivers/net/wireguard/receive.c:161 [inline]
wg_packet_handshake_receive_worker+0x619/0xe00 drivers/net/wireguard/receive.c:220
process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2307
worker_thread+0xaca/0x1280 kernel/workqueue.c:2454
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Allocated by task 3530:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
__kasan_slab_alloc+0x8e/0xc0 mm/kasan/common.c:467
kasan_slab_alloc include/linux/kasan.h:254 [inline]
slab_post_alloc_hook+0x53/0x380 mm/slab.h:519
slab_alloc_node mm/slub.c:3220 [inline]
slab_alloc mm/slub.c:3228 [inline]
kmem_cache_alloc+0xf3/0x280 mm/slub.c:3233
kmem_cache_zalloc include/linux/slab.h:711 [inline]
net_alloc net/core/net_namespace.c:405 [inline]
copy_net_ns+0x143/0x5d0 net/core/net_namespace.c:460
create_new_namespaces+0x425/0x7a0 kernel/nsproxy.c:110
unshare_nsproxy_namespaces+0x11e/0x170 kernel/nsproxy.c:226
ksys_unshare+0x580/0xb20 kernel/fork.c:3094
__do_sys_unshare kernel/fork.c:3168 [inline]
__se_sys_unshare kernel/fork.c:3166 [inline]
__x64_sys_unshare+0x34/0x40 kernel/fork.c:3166
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
The buggy address belongs to the object at ffff88807acf1a40
which belongs to the cache net_namespace of size 6464
The buggy address is located 600 bytes inside of
6464-byte region [ffff88807acf1a40, ffff88807acf3380)
The buggy address belongs to the page:
page:ffffea0001eb3c00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88807acf1a40 pfn:0x7acf0
head:ffffea0001eb3c00 order:3 compound_mapcount:0 compound_pincount:0
memcg:ffff88801ce6d241
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffffea0001994608 ffff888011dc7288 ffff888011dc63c0
raw: ffff88807acf1a40 0000000000040002 00000001ffffffff ffff88801ce6d241
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 3529, ts 83059049847, free_ts 83057498620
prep_new_page mm/page_alloc.c:2426 [inline]
get_page_from_freelist+0x322a/0x33c0 mm/page_alloc.c:4159
__alloc_pages+0x272/0x700 mm/page_alloc.c:5421
alloc_slab_page mm/slub.c:1775 [inline]
allocate_slab mm/slub.c:1912 [inline]
new_slab+0xbb/0x4b0 mm/slub.c:1975
___slab_alloc+0x6f6/0xe10 mm/slub.c:3008
__slab_alloc mm/slub.c:3095 [inline]
slab_alloc_node mm/slub.c:3186 [inline]
slab_alloc mm/slub.c:3228 [inline]
kmem_cache_alloc+0x18e/0x280 mm/slub.c:3233
kmem_cache_zalloc include/linux/slab.h:711 [inline]
net_alloc net/core/net_namespace.c:405 [inline]
copy_net_ns+0x143/0x5d0 net/core/net_namespace.c:460
create_new_namespaces+0x425/0x7a0 kernel/nsproxy.c:110
unshare_nsproxy_namespaces+0x11e/0x170 kernel/nsproxy.c:226
ksys_unshare+0x580/0xb20 kernel/fork.c:3094
__do_sys_unshare kernel/fork.c:3168 [inline]
__se_sys_unshare kernel/fork.c:3166 [inline]
__x64_sys_unshare+0x34/0x40 kernel/fork.c:3166
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1340 [inline]
free_pcp_prepare mm/page_alloc.c:1391 [inline]
free_unref_page_prepare+0xc34/0xcf0 mm/page_alloc.c:3317
free_unref_page+0x95/0x2d0 mm/page_alloc.c:3396
free_slab mm/slub.c:2015 [inline]
discard_slab mm/slub.c:2021 [inline]
__unfreeze_partials+0x1b7/0x210 mm/slub.c:2507
put_cpu_partial+0x132/0x1a0 mm/slub.c:2587
do_slab_free mm/slub.c:3487 [inline]
___cache_free+0xe3/0x100 mm/slub.c:3506
qlist_free_all+0x36/0x90 mm/kasan/quarantine.c:176
kasan_quarantine_reduce+0x162/0x180 mm/kasan/quarantine.c:283
__kasan_slab_alloc+0x2f/0xc0 mm/kasan/common.c:444
kasan_slab_alloc include/linux/kasan.h:254 [inline]
slab_post_alloc_hook+0x53/0x380 mm/slab.h:519
slab_alloc_node mm/slub.c:3220 [inline]
slab_alloc mm/slub.c:3228 [inline]
kmem_cache_alloc_trace+0xfb/0x290 mm/slub.c:3245
kmalloc include/linux/slab.h:591 [inline]
tomoyo_print_header security/tomoyo/audit.c:156 [inline]
tomoyo_init_log+0x1bf/0x1fe0 security/tomoyo/audit.c:255
tomoyo_supervisor+0x3b8/0x12c0 security/tomoyo/common.c:2097
tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline]
tomoyo_path_number_perm+0x5ba/0x810 security/tomoyo/file.c:734
security_file_ioctl+0x6d/0xa0 security/security.c:1555
__do_sys_ioctl fs/ioctl.c:868 [inline]
__se_sys_ioctl+0x47/0x160 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
Memory state around the buggy address:
ffff88807acf1b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88807acf1c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88807acf1c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88807acf1d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88807acf1d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
0: e8 3a 04 00 00 callq 0x43f
5: 49 89 dd mov %rbx,%r13
8: 48 85 db test %rbx,%rbx
b: 74 2a je 0x37
d: 4c 89 fe mov %r15,%rsi
10: 4d 85 ff test %r15,%r15
13: 75 e4 jne 0xfffffff9
15: 4c 89 ef mov %r13,%rdi
18: e8 d2 f8 6f ff callq 0xff6ff8ef
1d: 48 c1 e8 0c shr $0xc,%rax
21: 48 c1 e0 06 shl $0x6,%rax
25: 49 8b 4c 04 08 mov 0x8(%r12,%rax,1),%rcx
* 2a: f6 c1 01 test $0x1,%cl <-- trapping instruction
2d: 75 c3 jne 0xfffffff2
2f: 4c 01 e0 add %r12,%rax
32: 48 89 c1 mov %rax,%rcx
35: eb be jmp 0xfffffff5
37: 49 c7 46 08 00 00 00 movq $0x0,0x8(%r14)
3e: 00
3f: 49 rex.WB